JP4154467B2 - Liquid container and method of using the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a vessel for liquid, such as ladle, which is highly safe in handling in the case of discharging molten metal in the vessel to the outer part, without deteriorating the characteristic of the molten metal. <P>SOLUTION: The ladle for transporting the molten metal is provided with a ladle body part 10 for storing the molten metal and a siphon part body 30 for discharging the molten metal from the ladle body part. The siphon part body 30 is provided with an intermediate vessel positioned at the intermediate part, an inlet tube 32 and an outlet tube 33. For the inlet tube 32, the opening hole part 46 at the one end part is lower than the intermediate vessel and positioned at a storage part 11 inside the ladle body part 10 and the other end part is connected to the intermediate vessel. For the outlet tube 33 , the opening hole part 45 at the one end part is lower than the intermediate vessel and positioned at the outer side of the ladle body part 10 and the other end part is connected to the intermediate vessel 31. Furthermore, in the intermediate vessel, a vacuum pump for sucking gas in the inner part thereof, is provided. <P>COPYRIGHT: (C)2005,JPO&amp;NCIPI

Description

  The present invention relates to a liquid container for transporting a liquid such as a molten metal such as aluminum or a chemical solution and a method for using the same.

  Conventionally, molten metal such as aluminum is taken out of a furnace in an aluminum smelting factory, placed in a molten metal ladle, and transported in the factory by a forklift or the like. The transported molten metal such as aluminum is molded so as to have a predetermined shape. From the molten metal ladle, the molten metal is directly transferred to a mold or once to a small holding furnace.

  When discharging the molten metal from the molten metal ladle to another container or the like, a method of rotating the fork portion of the forklift and tilting the ladle itself is generally used.

  However, in this way, when the ladle itself is tilted greatly, the molten metal may spill out of the predetermined container. In particular, molten metal is hot and very dangerous.

  For this reason, for example, Patent Documents 1 and 2 disclose a differential pressure type molten metal discharge system (hereinafter referred to as a pressurization method) that discharges molten metal to a holding furnace by applying pressure in the container.

  FIG. 12 is a cross-sectional view showing a configuration of a shaped molten metal ladle 80. The ladle 80 has a storage part 84 for storing molten metal, a discharge pipe 81 for discharging the molten metal, and a pipe 83 for feeding a gas having a pressure higher than atmospheric pressure into the storage part 84. In addition, an opening 82 for discharging molten metal is formed at the tip of the discharge pipe 81. Molten metal is stored in the storage portion 84, and the liquid level 85 of the molten metal is located in the discharge pipe 81.

As shown in FIG. 12, when high-pressure gas is sent from the pipe 83 to the storage portion 84, the molten metal liquid level 85 in the discharge pipe 81 rises and eventually reaches the opening 82. Thereby, the molten metal is discharged from the opening 82.
JP 2002-316258 A (released on October 29, 2002) JP 2002-316256 A (released October 29, 2002)

  However, the ladle 80 as shown in FIG. 12 has the following problems.

  In order to discharge the molten metal from the opening 82, it is necessary to continue sending high-pressure gas to the storage unit 84. For this reason, the high-pressure gas and the molten metal continue to coexist in the storage unit 84, and bubbles are easily mixed in the molten metal. Thereby, the density of a molten metal falls and there exists a problem which worsens the characteristic of a molten metal. If mold molding is performed while bubbles are mixed in the molten metal, molding is performed with the bubbles taken in, the density of the molded body is low, and the strength is weakened.

  Furthermore, if the high pressure gas continues to be fed into the storage portion 84 even when the amount of molten metal remaining in the ladle is small, the high pressure gas may be injected from the open port 82 together with the high temperature molten metal, which is a safety aspect. Therefore, it was necessary to take measures to prevent the injection. For example, before the injection occurs, the discharge of the molten metal is stopped in a state where a considerable amount of the molten metal is left, or a plate for preventing scattering of the injected molten metal is installed.

  Further, not only in a molten metal ladle, even in the case of a liquid container such as a medicine, when the liquid in the container is discharged to the outside by pressurization, the liquid by mixing bubbles into the liquid is the same as above. There was a problem of deterioration of characteristics and jetting of liquid.

  The present invention has been made in view of the above-described problems, and its object is to provide a liquid container that does not deteriorate liquid characteristics and does not eject liquid when the liquid in the container is discharged to the outside. It is to provide a method of using the same.

  In order to solve the above problems, a liquid container according to the present invention is a liquid container for transporting a liquid, and a container main body for storing the liquid, and discharging the liquid from the container main body. And a siphon part, the siphon part comprising a first tube, a second tube, and a small container, the first opening of the first tube and the second tube The first opening of the first tube is connected to the small container so as to communicate with the inside of the small container, and the second opening of the first tube is the inside of the container main body, and from the small container The second opening of the second tube is outside the container main body and at a position lower than the second opening of the first tube, and It is characterized by having suction means for sucking the internal gas.

  Here, the siphon is a curved pipe that is used to raise a liquid to a high place and move it to a low place by using atmospheric pressure. The small container included in the siphon part is a reservoir part that can temporarily store the discharged liquid and also store gas in a part of the bent pipe when the liquid is discharged. is there.

  According to the above configuration, since the liquid container has the siphon part, the liquid stored in the container main body part is made to function as the siphon by using the siphon part and the atmospheric pressure is used. It can be discharged to the outside. In this way, a state in which the liquid stored in the container main body portion is discharged to the outside of the liquid container using the atmospheric pressure is called a siphon state.

  Here, the siphon unit has a small container and first and second tubes. And each 1st opening part of the 1st, 2nd pipe | tube is connected with the small container so that the inside of a small container may be connected. Therefore, the first tube, the small container, and the second tube are continuous in this order, and can flow a liquid.

  Moreover, the 2nd opening part of the 1st pipe | tube by the side which is not connected with a small container is located in a low place rather than a small container, and is located in the inside of a container main-body part. The second opening of the second tube on the side not connected to the small container is located outside the container main body and is lower than the second opening of the first tube. . Therefore, the siphon unit uses the atmospheric pressure to raise the liquid stored in the container main body unit from the second opening of the first tube to a small container positioned higher than the opening. Can be discharged from the second opening of the tube.

  In this way, since the liquid stored in the container body is naturally discharged from the container body using the atmospheric pressure, it is different from the conventional method in which the molten metal is sent out under pressure. Air bubbles are not mixed.

  Furthermore, since the small container is positioned higher than one end of the first and second pipes on the side not connected to the small container, a gas such as air is discharged when the liquid is discharged from the container main body. (Gas layer) accumulates. Since the gas layer is set to a pressure lower than the atmospheric pressure by the suction means, the bubbles (gas) contained in the liquid passing through the small container are removed from the liquid by being expanded and absorbed by the gas layer. . That is, the inside of the small container has a liquid degassing action.

  Further, when the liquid is discharged, the first tube and the second tube are filled with the liquid, so that the entry of air from the opening of the second tube is suppressed. As a result, bubbles can be prevented from being mixed into the liquid inside the second tube.

  In addition, as described above, in the present invention, since the liquid is discharged using a siphon using atmospheric pressure, the pressurized gas and the liquid are not ejected unlike the conventional pressurization method. , No air bubbles get mixed in.

  As a result, when the liquid in the liquid container is discharged to the outside, it is possible to provide a liquid container that does not inject liquid without deteriorating the characteristics of the liquid.

  Furthermore, the liquid container of the present invention is characterized in that in addition to the above-described configuration, a suction pressure variable means for changing the suction pressure of the suction means is further provided.

  According to the above configuration, when the liquid is discharged from the container main body, the amount of the gas layer in the small container can be changed by changing the suction pressure. The height can be easily controlled. Thereby, the flow of a liquid can be made mild and mixing of a bubble can be suppressed much more easily.

  For example, if the liquid level in the small container is too low, the liquid flowing into the small container from the first tube may become like a fountain and air bubbles may be mixed in. However, the liquid level is increased by the suction pressure varying means. By doing so, this fear can be easily avoided. Further, when the liquid level of the small container is too high, the liquid may be sucked into the suction means, but this possibility can be easily avoided by lowering the liquid level with the suction pressure variable means.

  The liquid level in the small container varies depending on the viscosity of the liquid, the friction coefficient between the liquid and the first and second pipes, etc., but the height of the liquid level is controlled by the suction pressure varying means. And can flexibly cope with the above characteristics of various liquids.

  Further, in the liquid container according to the present invention, in addition to the above-described configuration, the rectifier that suppresses the vortex or turbulence generated from the momentum of the liquid flowing into the small container from the first tube It is characterized by being fixed to a small container.

  According to said structure, when discharging | emitting a liquid from a container main-body part outside, the momentum of the flow of the liquid which flows in into a small container from a 1st pipe | tube is suppressed, and generation | occurrence | production of the ripple of the liquid in a small container, etc. As a result, mixing of bubbles into the liquid can be further suppressed.

  Furthermore, in the liquid container of the present invention, in addition to the above configuration, the small container is box-shaped, and the first opening of the first tube is connected to the bottom surface of the small container, The rectifier is characterized in that it is located above the connection with the first pipe on the bottom surface.

  According to said structure, when discharging | emitting a liquid from a container main-body part outside, the momentum of the flow of the upward flow of the liquid which flows in into a small container from a 1st pipe | tube is suppressed, and it is small from a 1st pipe | tube. The liquid flowing into the container is not spouted, and the occurrence of liquid undulation in the small container can be prevented. Thereby, mixing of the bubble to a liquid can be suppressed further.

  In particular, when the liquid level in the small container is positioned above the rectified product, the liquid flowing into the small container from the first pipe hits the rectified product before reaching the liquid level, so that The liquid level does not wave.

  Further, the liquid container of the present invention is characterized in that, in addition to the above-described configuration, an atmospheric pressure detecting means for detecting an atmospheric pressure inside the small container is provided.

  According to said structure, since the atmospheric | air pressure in a small container can be known instantly, it can be judged whether the suction means which suck | inhales the gas in a small container is operating normally.

Also, air pressure P ₁ of the small container is related to the amount of the liquid which is stored in the container body. Specifically, the following equation is satisfied.
P ₁ = P ₀ −ρg [H− (1 + A ₀ ² / A ₁ ² ) h] Formula (1)
Here, P ₀ is atmospheric pressure, ρ is liquid density, and g is standard gravity acceleration. H is the height difference between the position of the second opening of the second tube and the liquid level in the small container, and h is the position of the second opening of the second tube and the liquid level in the container main body. A ₀ represents the cross-sectional area of the second pipe. Furthermore, A ₁ is the cross-sectional area of the liquid flowing small vessel, the cross area of the liquid flow direction (i.e., a connection between the connecting part and the second tube of the first tube in the small container It is the area of the cross section perpendicular to the connecting straight line direction).

As described above, if provided with the suction pressure varying means, it is possible to keep the A ₁ and H constant. At this time, in relational expression (1), the variables are P ₁ and h. h is proportional to the amount of liquid in the container body. Therefore, by knowing the pressure P ₁ of the small container, it is possible to estimate the remaining amount of liquid container body easily.

  Furthermore, the liquid container according to the present invention, in addition to the above-described configuration, is configured so that the small container has a communication port with the outside for returning the pressure inside thereof to atmospheric pressure, and an opening / closing means for opening and closing the communication port. It is characterized by having.

  According to said structure, when the liquid is discharged | emitted from the container main-body part outside, the inside of a small container can be returned to atmospheric pressure. Thereby, the siphon unit does not maintain the siphon state, and the discharge of the liquid can be stopped. Therefore, the discharge of the liquid can be stopped at a desired time.

  Further, when the pressure difference between the inside of the small container and the atmosphere is large, the liquid may flow backward from the second tube into the small container. At this time, if the atmospheric pressure detection means is provided, the inside of the small container can be easily returned to the atmospheric pressure according to the value obtained by the atmospheric pressure detection means, so that the backflow can be prevented.

  Further, the liquid container according to the present invention includes a determination unit that determines whether or not the detected atmospheric pressure detected by the atmospheric pressure detection unit is smaller than a predetermined value, in addition to the above configuration, and the detected atmospheric pressure is a predetermined value. And a control means for opening the contact port when the determination means determines that it is smaller than the threshold.

  According to the above configuration, by setting the predetermined value to a value larger than the atmospheric pressure in the small container when the liquid flows backward from the second tube into the small container, the control means can adjust the atmospheric pressure in the small container. However, the inside of the small container is brought to atmospheric pressure before the pressure is lowered to the pressure when the liquid flows backward from the second pipe into the small container. Thereby, the backflow of the liquid from a 2nd pipe | tube into a small container can be prevented automatically.

  Furthermore, in addition to the above configuration, the liquid container of the present invention is characterized in that the inner diameter of the second tube is smaller than the inner diameter of the first tube.

  According to the above configuration, in the second tube having a small inner diameter, the liquid is less likely to flow than in the first tube. Therefore, since the liquid is easily filled in the second tube and the liquid is easily accumulated in the small container, it is possible to further reduce the time required to make the siphon part into the siphon state.

  Furthermore, the liquid container of the present invention is characterized in that, in addition to the above configuration, the second pipe is connected to the small container so as to have an angle of approximately 45 ° with respect to a horizontal plane. Yes.

  According to said structure, it can prevent further that gas mixes in the liquid which flows through a 2nd pipe | tube.

  Furthermore, the liquid container according to the present invention further includes detection means for detecting the amount of liquid in the small container in addition to the above configuration, and the suction pressure varying means is based on the amount of liquid detected by the detection means. The suction pressure is changed.

  According to the above configuration, since the suction pressure is changed according to the amount of liquid in the small container, for example, when the amount of liquid in the small container has decreased, the amount of gas sucked in the small container is increased. On the contrary, when the amount of liquid in the small container has increased, it is possible to automatically reduce the amount of suction of the gas in the small container.

  As a result, the amount of liquid in the small container can be kept within a certain range, the liquid in the small container can be prevented from being sucked by the suction means, and a stable liquid flow can be maintained. .

  Further, the method for using the liquid container according to the present invention is the above-described method for using the liquid container, wherein the second opening of the second tube is immersed in the liquid stored in the discharge container of the discharge destination. In addition, after the first step of sealing the container main body, and after the first step, the gas in the small container is sucked by the suction means and stored in the liquid in the container main body and the discharge container. A second step of pulling the liquid into the small container; and after the second step, when a predetermined amount of liquid has entered the small container, the container main body is opened to the atmosphere, And a third step of discharging the liquid.

  According to said structure, since a liquid and high pressure gas are not mixed like the conventional pressurization system, it can prevent that gas mixes in a liquid.

  Further, in the first step, since the container main body is in a sealed state, when the liquid is pulled up to the small container, the gas volume in the container main body increases, so that the atmospheric pressure in the container main body becomes lower than the atmospheric pressure. For this reason, the force for raising the liquid stored in the discharge container is larger than the force for raising the liquid from the container body to the small container. As a result, even if the amount of liquid in the discharge container is small and the liquid level is lower than the liquid level in the container main body, the liquid from the container main body and the liquid from the discharge container are transferred to the small container. The time to reach can be approximately the same and no gas remains in the first and second tubes.

  Furthermore, since the atmospheric pressure in the container main body is lower than the atmospheric pressure, it has a degassing action on the liquid, and the liquid is not discharged from the container main body even if the liquid is present in the siphon part. Therefore, the discharge can be started by performing the third step after setting the liquid level in the small container to a desired height.

  In the first step, the second opening of the second tube is immersed in the liquid stored in the discharge container of the discharge destination. Therefore, even in the discharge container of the discharge destination, the discharged liquid does not directly collide with the wall of the discharge container and the gas can be prevented from being mixed into the liquid.

  Furthermore, in addition to the above-described configuration, the method for using the liquid container according to the present invention includes a liquid amount in the small container in order to keep the liquid amount in the small container within a certain range after the third step. And a fourth step of changing the suction pressure of the suction means with respect to the small container.

  Therefore, the liquid in the small container can be prevented from being sucked by the suction means, and a stable liquid flow can be maintained.

  As described above, the liquid container of the present invention is a liquid container for transporting a liquid, and a container main body for storing liquid and a siphon for discharging the liquid from the container main body. The siphon part includes a first tube, a second tube, and a small container, and the first opening of the first tube and the first opening of the second tube The portion is connected to the small container so as to communicate with the inside of the small container, and the second opening of the first tube is inside the container main body and at a position lower than the small container. And the second opening of the second tube is outside the container body and at a position lower than the second opening of the first tube, and the gas inside the small container A suction means for sucking is provided.

  Therefore, when the liquid in the liquid container is discharged to the outside, it is possible to provide a liquid container that does not inject liquid without deteriorating the characteristics of the liquid.

  The liquid container of the present invention includes a ladle for storing and transporting a molten metal such as aluminum, magnesium, copper, a container for a chemical solution such as an organic substance, etc. In the following embodiments, for a molten metal I will explain the ladle. In addition, even if it is a chemical | medical solution container, what is necessary is just to form with the material which is the same structure as the following ladle, and is not eroded by the liquid to store and convey.

Embodiment 1
A ladle for molten metal such as aluminum, magnesium, and copper (hereinafter simply referred to as a ladle), which is an embodiment of the liquid container according to the present invention, will be described below with reference to FIGS. It is as follows.

  FIG. 4 shows a top view of the ladle of the present embodiment, and FIG. 1 shows a cross-sectional view taken along line AA in FIG. The ladle can be separated into a ladle body part (container body part) 10 and a ladle upper part 20, and FIG. 1 shows a combination of the ladle body part 10 and the ladle upper part 20 in a normal state. It shows the state when FIG. 2 is a sectional view showing a schematic configuration of only the ladle main body 10 in the ladle, and FIG. 3 is a sectional view showing a schematic configuration of only the ladle upper portion 20 in the ladle.

  As shown in FIG. 2, the ladle body 10 is formed in, for example, a substantially cylindrical shape having an outer diameter of about 1200 mm and a height of about 850 mm, and its bottom surface is closed by a bottom wall. A space surrounded by the inner side surface and the inner bottom surface is a liquid storage unit 11. Moreover, the thickness of the side wall and bottom wall of the ladle main-body part 10 is about 150 mm, for example. A part of the side wall is provided with a hole 14 extending substantially in the vertical direction into which an inlet pipe (first pipe) 32 of a siphon body part (siphon part) 30 described later can be inserted. Is connected to the bottom of the storage unit 11 through the connection port 15.

  Moreover, the upper part of the outer wall of the ladle main-body part 10 is equipped with the flange part 17 for connecting with the ladle upper part 20. As shown in FIG. A part of the flange portion 17 is provided with a hole 12 through which an outlet pipe 33 of a siphon main body portion 30 described later can pass. When the ladle upper part 20 is attached to the ladle body part 10, a sealing material (not shown) is applied to the upper surface of the flange part 17 so that no gas leaks between the storage part 11 and the outside. .

  Further, a fork insertion member 16 into which a fork of a forklift is inserted is provided on the lower surface of the ladle body 10. Thereby, a ladle can be conveyed with a forklift. Moreover, a ladle can be moved up and down by a forklift.

  FIG. 3 is a cross-sectional view showing a schematic configuration of the ladle upper portion 20. The ladle main body 10 has a function of closing the upper surface opening. The ladle upper part 20 is comprised from the flange part 21, the upper cover 22, and the siphon part main body (siphon part) 30 formed integrally with the flange part 21. As shown in FIG. 1 and 3, for simplification, the siphon unit body 30 shows only its basic configuration.

  As shown in FIG. 3, the basic configuration of the siphon unit body 30 is an intermediate container (small container) 31 that is in the middle of the siphon unit body 30 and located at the highest position of the siphon unit body 30, and the intermediate container 31. It consists of two pipes (an inlet pipe (first pipe) 32 and an outlet pipe (second pipe) 33) connected to the bottom surface. In other words, one first opening of each of the two pipes is connected to the intermediate container 31 so as to communicate with the inside of the intermediate container 31.

  The intermediate container 31 is located in the middle of the siphon unit main body 30. At this position, the thickness of the tube is larger than other positions, the discharged molten metal can once remain, and the gas can be stored. It can also be said that it is a reservoir. A configuration provided in the siphon unit body 30 and a detailed description thereof will be described later.

  The intermediate container 31 is formed at the same height as the flange portion 21. That is, when the container upper part 20 is attached to the container main body part 10, the intermediate container 31 is at a position higher than the storage part 11. In the present embodiment, the intermediate container 31 has a substantially rectangular parallelepiped box shape. Further, an opening 31 a for connecting to the inlet pipe 32 and an opening 31 b for connecting to the outlet pipe 33 are provided on the bottom surface of the intermediate container 31.

  Further, an observation window 35 is formed on the upper surface of the intermediate container 31. The inside of the intermediate container 31 can be observed from the observation window 35. The intermediate container 31 is a small container that is closed except for the openings 31a and 31b.

  As shown in FIG. 3, the inlet pipe 32 is adapted to be fitted into the hole 14 provided in the ladle body portion 10 when the ladle upper portion 20 is attached to the ladle body portion 10. Thereby, the opening part 46 in the lower end part of the inlet pipe 32 is connected via the communication port 15 of the ladle body part 10 and the hole 14, and is located inside the ladle body part 10. .

  The opening 45 at the lower end of the outlet pipe 33 is located outside the ladle body 20 and is set at a position lower than the opening 46 at the lower end of the inlet pipe 32. Thereby, the opening part 45 exists in the position lower than the liquid level of the molten metal stored in the storage part 11. The inner diameter of the outlet pipe 33 is set smaller than the inner diameter of the inlet pipe 32.

  From the above, when molten metal is present in the storage unit 11, the inlet pipe 32, the intermediate container 31, and the outlet pipe 33, the siphon unit body 30 including the inlet pipe 32, the intermediate container 31, and the outlet pipe 33 functions as a siphon. . That is, the siphon unit body 30 uses the atmospheric pressure to temporarily raise the molten metal stored in the storage unit 11 to the intermediate container 31 that is a high place and from the opening 45 positioned at a lower position than the storage unit 11. A siphon state can be formed in which the molten metal is discharged. Thereby, since the molten metal is naturally discharged from the storage unit 11 to the outside using the atmospheric pressure, unlike the conventional method in which the molten metal is sent out by pressurization, bubbles are not mixed in the molten metal. . For this reason, a molten metal can be discharged | emitted from a ladle outside without reducing the density of a molten metal.

  In addition, the exit pipe | tube 33 is separable into the exit pipe upper part 33a and the exit pipe lower part 33b in the connection part 34, as FIG. 3 shows. The outlet pipe upper part 33a is formed in a direction substantially perpendicular to the floor surface, and the outlet pipe lower part 33b is inclined at a predetermined angle with respect to the floor surface vertical direction. That is, the outlet pipe 33 is obliquely downward from the intermediate container 31. When attaching the ladle upper part 20 to the ladle main body part 10, first, the outlet pipe 33 is separated by the connecting part 34, and the outlet pipe upper part 33a is provided on the flange part 17 of the ladle main body part 10 shown in FIG. Through the perforated hole 12. Thereafter, the outlet pipe lower part 33 b is connected by the connecting part 34. Further, the outlet pipe lower portion 33b can be rotated with respect to the outlet pipe upper portion 33a at the connecting portion 34.

  Further, the outlet pipe 33 preferably has an angle of approximately 45 ° with respect to the horizontal plane. Thereby, when flowing through the outlet pipe 33, the molten metal can flow stably without being mixed with air.

  As shown in FIG. 4, the outlet pipe lower portion 33b can be arbitrarily rotated in the twisting direction with respect to the outlet pipe upper portion 33a as in the position P1 and the position P2. Thereby, when conveying the ladle, the outlet pipe lower part 33b is connected to the connecting part 34 at the position P2, and when discharging the molten metal from the ladle, the outlet pipe lower part 33b is connected to the connecting part 34 at the position P1. can do. As a result, the outlet pipe lower portion 33b does not get in the way during the conveyance. Moreover, when discharging molten metal, it is not necessary to bring the ladle main body 10 closer to the discharge destination than necessary.

  As shown in FIG. 1, the flange portion 21 is connected so as to be in close contact with the flange portion 17 of the ladle body portion 10 when the ladle upper portion 20 is attached to the ladle body portion 10. An upper opening 21 a is formed in the flange portion 21. The upper opening 21 a is used to put a flame from a preheating device for preheating the ladle into the storage unit 11 before pouring the molten metal into the storage unit 11, or injecting molten metal into the storage unit 11. Is for. The height of the flange portion 21 excluding the siphon portion main body 30 is about 300 mm, for example, and the inner diameter of the upper opening portion 21a is about 600 mm, for example.

  As shown in FIG. 3, the flange portion 21 includes a thermocouple 24 and a pipe 23a. The thermocouple 24 includes a measurement end for measuring the temperature and a display unit for displaying the measured temperature. The thermocouple 24 has a flange so that when the ladle upper part 20 is attached to the ladle body part 10, the measurement point is located near the bottom of the storage part 11 and the display part is located above the flange part 21. It is attached to the part 21.

  The pipe 23 a is attached to the flange portion 21 so as to penetrate the flange portion 21. One end of the pipe 23 a is located inside the storage unit 11 when the ladle upper part 20 is attached to the ladle body 10.

  Further, the other end of the pipe 23 a, that is, the other end located outside the storage unit 11 is connected to the three-way valve 23. The three-way valve 23 is connected to a pipe 23b connected to a pressure pump (not shown) for feeding pressurized gas. The remaining one side of the three-way valve 23 is opened to the atmosphere. As a result, the injection of pressurized gas into the storage unit 11 and the opening of the storage unit 11 to the atmosphere can be switched by the three-way valve 23.

  When the three-way valve 23 is set so as to connect the pipe 23a and the pipe 23b, pressurized gas is injected from the pressure pump into the storage unit 11 through the pipe 23b, the three-way valve 23, and the pipe 23a. . When pressurized gas is sent into the storage unit 11, the atmospheric pressure in the storage unit 11 rises, the molten metal flows into the siphon unit body 30, and the siphon unit body 30 can function as a siphon as described above. When the siphon unit body 30 functions as a siphon, the injection of pressurized gas is stopped, and the inside of the storage unit 11 is returned to atmospheric pressure by the three-way valve 23. That is, the pressurizing pump can be said to be a drive source for causing the siphon unit body 30 to function as a siphon. In addition, not only a pressure pump but the gas compression cylinder may be connected to the piping 23b. Further, the type of pressurized gas is preferably nitrogen gas or argon gas. Thereby, oxidation of molten metal can be prevented.

  The upper lid 22 is for opening and closing an upper opening 21 a provided in the flange portion 21, and is attached to the flange portion 21 so as to be freely opened and closed. In the case of preheating the storage unit 11 or injecting molten metal into the storage unit 11, the upper lid 22 opens the upper opening 21 a.

  Moreover, when discharging | emitting to another container from conveyance and the storage part 11, the upper cover 22 closes the upper opening part 21a. A sealing material is provided on the lower surface of the upper lid 22 where the upper lid 22 and the flange portion 21 are in contact with each other so that no gap is generated between the upper lid 22 and the flange portion 21 when the upper lid 22 closes the upper opening 21a. Is given.

  Further, in the present embodiment, since the upper lid 22 is heavy, a handle (not shown) is provided on the upper surface of the upper lid 22 for opening and closing the rail, and a rail member that supports the upper lid 22 so as to be movable is a flange portion. 21 is provided on the upper surface.

  Next, the details of the configuration and functions provided in the siphon unit body 30 will be described with reference to FIGS.

  FIG. 5 shows a cross section of the siphon unit body 30 and members provided in the siphon unit body 30. FIG. 6 is a simplified cross-sectional view of the ladle according to the present embodiment. When the siphon unit body 30 functions as a siphon and the molten metal stored in the storage unit 11 is discharged. Shows the state.

  The liquid level of the molten metal in the storage unit 11 is the liquid level 51, and the liquid level of the molten metal in the intermediate container 31 is the liquid level 53. As described above, in the state where the siphon unit main body 30 functions as a siphon, the inside of the storage unit 11 is at atmospheric pressure by the three-way valve 23.

  As shown in FIG. 5, a pipe 47 provided with a pressure gauge (atmospheric pressure detection means) 38, an electric valve (opening / closing means) 37, a pipe 48 connected to the vacuum pump 43, and an upper portion of the intermediate container 31. Is connected. The pressure gauge 38, the pipe 47, and the pipe 48 penetrate the upper surface of the intermediate container 31 and reach the inside of the intermediate container 31. A rectifying member (rectified material) 36 is fixed inside the intermediate container 31.

  The pipe 48 is for sending the gas in the intermediate container 31 to the vacuum pump 43. Thereby, the vacuum pump 43 can suck the gas in the intermediate container 31. The vacuum pump 43 is for sucking the gas in the intermediate container 31 and is, for example, an oil rotary pump.

  In FIG. 6, when the atmospheric pressure in the intermediate container 31 is atmospheric pressure, the pressure received by the liquid surface 53 in the intermediate container 31 from the gas, the pressure received by the liquid level 51 in the storage unit 11 from the gas, and the outlet pipe 33. Since all the pressure received by the liquid from the gas at the opening 45 is the same atmospheric pressure, the molten metal in the storage unit 11 cannot rise to the intermediate container 31 at a high place, and the siphon unit body 30 is in a siphon state. It cannot be maintained. However, when the atmospheric pressure in the intermediate container 31 becomes lower than the atmospheric pressure by the vacuum pump 43, the siphon state can be maintained and the molten metal can be discharged to the outside. Moreover, since the atmospheric pressure in the intermediate container 31 is lowered by the vacuum pump 43, a trace amount of bubbles (gas) and water vapor contained in the molten metal in the intermediate container 31 can be removed.

  Further, as shown in FIG. 5, the pipe 48 is provided with a valve 44 between the intermediate container 31 and the vacuum pump 43. Depending on the degree of opening and closing of the valve 44, the suction pressure of the vacuum pump 43 into the intermediate container 31 can be changed to a desired value. Therefore, the valve 44 is a suction pressure varying means for the inside of the intermediate container 31 of the vacuum pump 43.

  When the suction pressure of the vacuum pump 43 into the intermediate container 31 varies, the amount of molten metal in the intermediate container 31 also varies. That is, the liquid level 53 (see FIG. 6) of the molten metal in the intermediate container 31 can be controlled by the degree of opening and closing of the valve 44, and the liquid level 53 can be maintained at a substantially constant height. Thereby, a liquid flow can be made mild and mixing of a bubble can be suppressed much more easily.

  For example, when the liquid level 53 in the intermediate container 31 is too low, the liquid flowing into the intermediate container 31 from the inlet pipe 32 becomes like a fountain, and there is a possibility that bubbles will be mixed in the intermediate container 31 and bubbles may be mixed. However, the fear can be easily avoided by controlling the liquid level 53 high by the valve 44. In addition, when the liquid level 53 is too high, the flow rate of the molten metal discharged from the outlet pipe 33 is increased, and the flow of the molten metal is not stable in the opening 45, and there is a possibility that bubbles may be mixed. The risk can be easily avoided by controlling the liquid level 53 low by the valve 44.

  The molten metal liquid level 53 in the intermediate container 31 varies depending on the viscosity of the molten metal, the coefficient of friction with the pipe when the molten metal flows through the inlet pipe 32 and the outlet pipe 33, and the like. Moreover, these change with the temperature of a molten metal, a density, etc. Therefore, the provision of the valve 44 that makes the suction pressure of the vacuum pump 43 variable makes it possible to easily keep the liquid level 53 within a predetermined range in accordance with various liquids and liquid characteristics. That is, the valve 44 is a preferable configuration that can flexibly cope with the characteristics of various liquids.

  The rectifying member 36 is a plate-like material that functions to suppress vortex or turbulence generated by the momentum of the molten metal flowing into the intermediate container 31 from the inlet pipe 32, and is fixed to the intermediate container 31. Thus, since the intermediate container 31 and the rectifying member 36 can be integrally formed, the intermediate container 31 and the rectifying member 36 can be easily manufactured.

  The rectifying member 36 is located above the opening 31 a provided to connect the inlet pipe 32. Thereby, the molten metal flowing into the intermediate container 31 from the inlet pipe 32 once collides with the rectifying member 36. Therefore, the upward kinetic energy of the molten metal flowing into the intermediate container 31 from the inlet pipe 32 is reduced by the rectifying member 36. That is, the upward momentum of the molten metal flowing into the intermediate container 31 from the inlet pipe 32 is attenuated. Here, when the height of the liquid level 53 is set higher than that of the rectifying member 36 by the valve 44 described above, the molten metal flowing into the intermediate container 31 from the inlet pipe 32 reaches the liquid level 53 before reaching the liquid level 53. Therefore, the liquid level 53 in the intermediate container 31 does not wave. Therefore, since the liquid level 53 in the intermediate container 31 is kept substantially horizontal and stable, mixing of bubbles due to undulations or the like can be further suppressed in the intermediate container 31.

  In particular, when the molten metal discharge rate is high, that is, when the molten metal inflow rate from the inlet pipe 32 into the intermediate vessel 31 is large and the flow is strong, the intermediate vessel 31 provided with the rectifying member 36 is This is a preferred configuration.

  The pipe 47 is for returning the atmospheric pressure in the intermediate container 31 decompressed by the vacuum pump 43 to the atmospheric pressure, and is connected to an electric valve 37. By opening the motor-operated valve 37, the atmospheric pressure in the intermediate container 31 is returned to the atmospheric pressure. The opening and closing of the electric valve 37 is controlled by a control device 46 described later. When the atmospheric pressure in the intermediate container 31 is returned to the atmospheric pressure, the siphon state cannot be maintained, so that the discharge can be stopped. That is, the electric valve 37 can stop the discharge of the molten metal at a desired time.

  The pressure gauge 38 measures the atmospheric pressure in the intermediate container 31 and displays the measured pressure value. With the pressure gauge 38, it is possible to confirm whether the vacuum pump 43 is operating normally, and to confirm whether there is a clogged pipe in the pipe connecting the vacuum pump 43 and the intermediate container 31.

Further, when the liquid level 53 (see FIG. 6) is at a certain height, the pressure gauge 38 can easily estimate the amount of molten metal remaining in the storage unit 11. This is because the pressure P ₁ in the intermediate container 31 follows the following formula (1).
P ₁ = P ₀ −ρg {H− (1 + A ₀ ² / A ₁ ² ) h} Formula (1)
In Equation (1), P ₀ is atmospheric pressure, ρ is the density of the molten metal, and g is the standard gravitational acceleration. Further, as shown in FIG. 6, H is a height difference between the position of the opening 45 of the outlet pipe 33 and the liquid level 53 in the intermediate container 31, and h is the position of the opening 45 of the outlet pipe 33. A ₀ represents the cross-sectional area of the outlet pipe 33 with respect to the height difference from the liquid level 51 in the storage unit 11. Furthermore, A ₁ is the cross-sectional area of the molten metal flowing through the intermediate container 31, the cross area perpendicular to the flow direction of the molten metal (corresponding to the linear direction connecting the opening 31a and the opening 31b of the intermediate container 31) The cross-sectional area.

From the equation (1), the height difference h between the liquid level 51 in the position and the storage portion 11 of the opening 45 of the outlet tube 33, a difference _{P 0} between the pressure _{P 1} in the atmospheric pressure _{P 0} and the intermediate container 31 relative -P _1, are proportional with the negative slope. P ₀ -P ₁ is the amount of pressure reduction in the intermediate container 31 with respect to the atmospheric pressure. Here, when the difference in height between the liquid level 51 in the initial reservoir 11 before discharge to the position of the opening 45 of the outlet tube 33 and h _0, emissions are proportional to h ₀ -h _1. Normally, the liquid level 51 in the initial storage unit 11 before discharge is substantially constant, so h ₀ is also substantially constant. Therefore, the discharge amount is in a proportional relationship having a positive gradient with respect to the pressure reduction amount in the intermediate container 31 with respect to the atmospheric pressure.

FIG. 13 shows an experimental result of the discharge amount with respect to ΔV when the reduced pressure amount in the intermediate container 31 with respect to the atmospheric pressure P ₀ is converted into a voltage value (ΔV) which is an electric signal in the ladle of the present embodiment. It is a graph. As shown in FIG. 13, it was experimentally confirmed that the discharge amount has a proportional relationship with a positive gradient with respect to the reduced pressure amount in the intermediate container 31. This experiment is a result of using water as a liquid. However, it is theoretically possible for the molten metal that the discharge amount is proportional to the reduced pressure in the intermediate container 31 with a positive gradient. Applies to

  This eliminates the need for troublesome operations such as opening the upper lid in order to check the amount of remaining hot water as in the prior art.

  Moreover, in this Embodiment, it has the preferable structure which converts this remaining hot water amount automatically. That is, as shown in FIG. 5, a pressure value reading unit 39 having a conversion unit 40 is connected to the pressure gauge 38. The pressure value reading unit 39 reads the measurement value of the pressure gauge 38 in a digital format and sends the detected value to the conversion unit 40. The conversion part 40 calculates the amount of remaining hot water according to said Formula (1). The conversion unit 40 is provided with a display unit (not shown), and the conversion result is displayed on the display unit. Thereby, the user of the ladle can know the amount of remaining hot water instantly.

Further, the P ₁ and h order to comply with the above formula (1), the amount of hot water storage unit 11 is To slight, pressure P ₁ in the intermediate container 31 is significantly reduced. At this time, since the difference between the atmospheric pressure in the intermediate vessel 31 and the atmospheric pressure (atmospheric pressure) between the opening 45 of the outlet pipe 33 is large, the molten metal filling the outlet pipe 33 flows back into the intermediate vessel 31. Occurs. When the reverse flow occurs, bubbles may be mixed into the molten metal flowing backward due to the impact, and the molten metal mixed with bubbles may flow out to the outside again.

  Therefore, the present embodiment has a preferable configuration for preventing the back flow when the amount of remaining hot water is small. That is, as shown in FIG. 5, a comparison unit 41 is connected to the pressure value reading unit 39, and a control unit (control means) 42 that controls opening and closing of the electric valve 37 is provided in the comparison unit 41. It has been.

  The pressure value reading unit 39 sends the read pressure value to the comparison unit (determination unit) 41. The comparison unit 41 compares the detection value sent from the pressure value reading unit 39 with a predetermined value, and determines the magnitude relationship. Here, the predetermined value is set to a value larger than the pressure value in the intermediate container 31 in which the backflow occurs. When the comparison unit 41 determines that the detection value sent from the pressure value reading unit 39 is equal to or less than a predetermined value, the comparison unit 41 transmits a signal to the control unit 42 that the detection value is equal to or less than the predetermined value. When the control unit 42 receives the signal from the comparison unit, the control unit 42 opens the motor-operated valve 37 to make the inside of the intermediate container 31 atmospheric pressure. Thereby, the pressure difference between the inside of the intermediate container 31 and the opening 45 is eliminated, and the backflow can be prevented. That is, the electric valve 37 has a function of preventing the backflow, and the pressure value reading unit 39, the comparison unit 41, and the control unit 42 have the function of automatically preventing the backflow.

  The pressure value reading unit 39, the comparison unit 41, the conversion unit 40, and the control unit 42 are grouped as a control device 46, and the control device 46 is configured by a microcomputer such as an LSI. The microcomputer may be provided on the upper surface of the intermediate container 31. Further, a display panel constituting the display unit (not shown) may be provided on the upper surface of the intermediate container 31.

  The material of the ladle main body 10 and the ladle upper portion 20 is selected so that it can withstand the temperature of the molten metal. In this Embodiment, as shown in FIG. 1, the ladle main-body part 10 has the outer shell iron skin 10d formed in the outermost part. Further, a heat insulating material 10c, ceramic paper (not shown), and a lining refractory material 10b are formed in this order on the bottom and side walls of the ladle body 10 inside the outer shell 10d. The hole 14 is provided in the lining refractory material 10b.

  On the other hand, in the ladle upper part 20 excluding the siphon part main body 30, a heat insulating material 21c and a lining refractory material 21b are sequentially formed inside the outer shell iron skin 21d in the horizontal layer of the flange part 21. The vertical layer forming the upper opening 21a of the flange 21 is formed of a lining refractory material 21b inside the outer shell iron skin 21d. Furthermore, the siphon part main body 30 is formed with a lining refractory material 30b in order on the inner side of the outer shell 30d.

  The upper lid 22 is formed with a heat insulating material 22c and a lining refractory material 22b in this order inside the outer shell iron skin 22d.

Here, in this embodiment, the material of the lining refractory materials 10b, 21b, 22b, and 30b is composed of powdery bauxite-based low cement castable and particulate bubble alumina. . Therefore, the powdery bauxite-based low cement castable is dense and has high strength because the powdered low cement castable is mixed with hollow particulate bubble alumina. The component contains about 82.0% aluminum oxide (Al ₂ O ₃ ) and other metal oxides. However, in the present invention, the present invention is not necessarily limited thereto. For example, the blending amount of aluminum oxide (Al ₂ O ₃ ) is about 80% to 85%. The powder substance mainly composed of aluminum oxide (Al ₂ O ₃ ) has a particle size of about 3 mm or less.

  A method for forming the lining refractory material will be briefly described in the case of the ladle main body 10. After adding and kneading 104 to 128 ml of water per kg to the above powder substance, and applying a forming mold inside the ladle main body 10, between the ceramic paper (not shown) and this forming mold, The above-mentioned lining refractory material 10b is formed by pouring the kneaded material and solidifying it, and then removing the molding frame.

  Moreover, the observation window 35 formed in the upper part of the intermediate container 31 of the siphon part main body 30 is formed with fireproof glass, and the rectifying member 36 is formed with the same fireproof material as the lining fireproof material 30b.

  Next, the usage method of the ladle of this embodiment is demonstrated.

  First, a method for injecting molten metal into the storage unit 11 is as follows. As shown in FIG. 1, with the ladle upper part 20 attached to the ladle main body 10, the upper lid 22 is opened, and a flame is emitted from the upper opening 21 a using the preheating device, so that the entire liquid container Heat. Thereafter, molten metal to be stored and transported is injected from the upper opening 21a. At the time of injection, bubbles may be mixed in the molten metal. Therefore, after injection, nitrogen gas or argon gas is usually introduced into the storage unit to remove the bubbles. Then, it is transported to a predetermined place.

  Next, the usage method of the said ladle when discharging molten metal from the storage part 11 to an external mold forming machine etc. is demonstrated, referring FIGS. 6 to 11 simply show the cross section of the liquid container according to the present embodiment. Moreover, the liquid level of the molten metal in the storage part 11, the inlet pipe 32, and the intermediate container 31 is the liquid level 51, the liquid level 52, and the liquid level 53, respectively.

  FIG. 7 shows a state before the molten metal is discharged from the ladle to the outside. As shown in FIG. 7, the molten metal is stored in the storage unit 11 up to the liquid level 51, and the liquid level 52 of the molten metal in the inlet pipe 32 is the same height as the liquid level 51.

  Here, the three-way valve 23 is set so that the storage unit 11 and a pressurizing pump (not shown) can communicate with each other. Further, the inside of the intermediate container 31 is communicated with the atmosphere via the outlet pipe 33, and the internal pressure of the intermediate container 31 is the same as the atmospheric pressure. Therefore, the motor operated valve 37 is closed by the control unit 42.

  Next, a pressurization pump is started and pressurized gas is sent into the storage part 11 via piping 23a, 23b. Since the storage part 11 is sealed with the sealing material as described above, the internal atmospheric pressure rises. On the other hand, since the gas inside the inlet pipe 32 is in communication with the atmosphere via the intermediate container 31 and the outlet pipe 33, it has an atmospheric pressure. Therefore, as shown in FIG. 8, the pressurized gas in the storage unit 11 pushes down the liquid level 51 of the molten metal, and at the same time, the liquid level 52 of the inlet pipe 32 rises.

  Moreover, the vacuum pump 43 is started with the start of a pressurizing pump (not shown). However, in the state in FIG. 8, the outlet pipe 33 is not filled with molten metal, so that the atmosphere flows into the intermediate container 31 from the outlet pipe 33. Therefore, the atmospheric pressure in the intermediate container 31 is maintained almost at atmospheric pressure.

  Next, if the pressurized gas is continuously fed to the storage unit 11, as shown in FIG. 9, the liquid level 52 of the inlet pipe 32 reaches the intermediate container 31, and molten metal begins to accumulate in the intermediate container 31. At the same time, the molten metal begins to flow into the outlet pipe 33, and the molten metal is discharged from the opening 45.

  As described above, when the outlet pipe 33 is filled with the molten metal, air does not flow from the outlet pipe 33 into the intermediate container 31. Therefore, the atmospheric pressure in the intermediate container 31 starts to decrease by the vacuum pump 43. That is, the decompressed gas and the molten metal coexist in the intermediate container 31. Thereby, a trace amount of water vapor and bubbles contained in the molten metal passing through the intermediate container 31 are removed by the reduced pressure state in the intermediate container 31. That is, the intermediate container 31 has a degassing effect.

  At the same time, the siphon unit main body 30 having the basic structure of the inlet pipe 32, the intermediate container 31, and the outlet pipe 33 functions as a siphon.

  When the siphon unit body 30 functions as a siphon, the feeding of the pressurized gas to the storage unit 11 is stopped, and the inside of the storage unit 11 is opened to the atmosphere by the three-way valve 23. Thus, the time which pressurizes the inside of the storage part 11 with pressurized gas is very short. That is, the time during which the pressurized gas and the molten metal coexist in the storage unit 11 is short. Therefore, mixing of bubbles into the molten metal can be significantly reduced as compared with the prior art.

  In the present embodiment, as described above, the inner diameter d of the outlet pipe 33 is set smaller than the inner diameter D of the inlet pipe 32. Thereby, compared with the inlet pipe 32, the molten metal does not flow easily in the outlet pipe 33, and the outlet pipe 33 is immediately filled with the molten metal. As a result, the molten metal is more likely to accumulate in the intermediate container 31 in the intermediate container 31, that is, the time required for the siphon unit body 30 to start functioning as a siphon can be further reduced. . Therefore, mixing of bubbles into the molten metal due to the pressurized gas can be further reduced.

  Moreover, even if the atmospheric pressure in the storage unit 11 is returned to atmospheric pressure, the atmospheric pressure in the intermediate container 31 is lower than the atmospheric pressure, and the opening 45 of the outlet pipe 33 is the liquid level stored in the storage unit 11. Since the position is set lower than 53, the siphon unit body 30 continues to function as a siphon. That is, the molten metal in the storage unit 11 is continuously discharged to the outside. Since the siphon is used, the liquid flow is gentler than conventional discharge by pressurization, and mixing of bubbles can be suppressed. Moreover, since the storage part 11 is returned to atmospheric pressure, naturally, compared with the discharge by the conventional pressurization method, mixing of bubbles into the molten metal can be prevented.

  Next, by adjusting the degree of opening and closing of the valve 44, the suction pressure of the vacuum pump 43 with respect to the intermediate container 31 is changed (that is, the exhaust speed is changed), and as shown in FIG. The height is controlled to a height above the rectifying member 36. Thus, even when the flow rate of the molten metal from the inlet pipe 32 is high, the molten metal flowing into the intermediate container 31 from the inlet pipe 32 reaches the rectifying member 36 before reaching the liquid level 53 in the intermediate container 31. Therefore, the bubbles can be further prevented from mixing without causing the liquid level 53 to wave. In the state where the liquid level 53 is maintained at a height above the rectifying member 36 as shown in FIG. 6, most of the molten metal in the storage unit 11 is discharged. The value of the suction pressure is set to an appropriate value depending on the type of molten metal, temperature, and the like.

  If the discharge is continued, the liquid level 51 of the storage unit 11 is lowered as shown in FIG. In this case, as described above, the pressure P1 in the intermediate container 31 decreases. If the discharge is continued in this state, the molten metal filled in the outlet pipe 33 eventually flows back to the intermediate container.

  Then, the ladle of this embodiment has the preferable structure which prevents this backflow, as mentioned above. That is, before the backflow occurs, when the detected atmospheric pressure in the intermediate container 31 reaches a predetermined value set in the comparison unit 41 (see FIG. 5), the comparison unit 41 (see FIG. 5) It is determined that the detected atmospheric pressure in the container 31 is equal to or lower than a predetermined value, and a signal indicating that the detected atmospheric pressure is equal to or lower than the predetermined value is transmitted to the control unit 42 (see FIG. 5).

  By receiving the signal, the control unit 42 (see FIG. 5) automatically opens the motor-operated valve 37, and the inside of the intermediate container 31 returns to the atmospheric pressure before the backflow occurs. Thereby, the molten metal remaining in the intermediate container 31, the inlet pipe 32, and the outlet pipe 33 flows out to the storage unit 11 or the outside. Therefore, the molten metal remaining in the outlet pipe 33 does not flow back to the intermediate container 31 and the mixing of bubbles can be prevented.

  Further, the pressurizing pump is only operated for a predetermined time at the start of discharging, and thereafter, the storage unit 11 is returned to the atmospheric pressure. Therefore, unlike the conventional high-pressure discharge method, molten metal is not injected by the pressurized gas at the end of discharge.

  FIG. 11 shows a state after the pressure inside the intermediate container 31 is returned to the atmospheric pressure by the electric valve 37. As shown in FIG. 11, since the molten metal in the intermediate container 31, the inlet pipe 32, and the outlet pipe 33 flows out to the storage unit 11 or the outside, the molten metal does not remain and melts in the storage unit 11. Only a small amount of metal remains.

  As described above, the ladle according to the present embodiment is for transporting molten metal, and is melted from the ladle main body 10 provided with the storage unit 11 for storing the molten metal, and the ladle main body 10. And a siphon unit body 30 for discharging metal. The siphon unit body 30 includes an intermediate container 31, an inlet pipe 32, and an outlet pipe 33. One opening of the inlet pipe 32 and the outlet pipe 33 is connected to the intermediate container 31 so as to communicate with the inside of the intermediate container 31. Further, the other opening (second opening) 46 of the inlet pipe 32 is lower than the intermediate container 31 and is located inside the ladle body 10. Further, the other opening (second opening) 45 of the outlet pipe 33 is lower than the other opening (second opening) 46 of the inlet pipe 32 and is located outside the ladle body 10. . Further, a vacuum pump 43 that sucks the gas inside the intermediate container 31 is provided.

  With the above configuration, the ladle has the siphon unit body 30, so that the siphon unit body 30 functions as a siphon, and the molten metal stored in the ladle body unit 10 is removed using atmospheric pressure. It can be discharged outside the pan. Here, the siphon unit body 30 includes an intermediate container 31, an inlet pipe 32, and an outlet pipe 33, and an opening 46 that is an end of the inlet pipe 32 that is not connected to the intermediate container 31. Is located lower than the intermediate container 31 and is located inside the ladle body 10. Further, in the outlet pipe 33, the opening 45, which is the end not connected to the intermediate container 31, is positioned lower than the opening 46 of the inlet pipe 32, and the ladle body 10 Located outside. Therefore, the siphon unit body 30 uses the atmospheric pressure to transfer the molten metal stored in the ladle body unit 10 from the opening 46 of the inlet pipe 32 to a higher position than the opening 46. And can be discharged from the opening 45 of the outlet pipe 33.

  As described above, since the molten metal is naturally discharged from the ladle main body 10 to the outside using atmospheric pressure, air bubbles are mixed in the molten metal, unlike the conventional method in which the molten metal is sent out by pressurization. There is nothing.

  Furthermore, since the intermediate container 31 is located higher than the openings 45 and 46, when discharging the molten metal from the ladle main body 10, a gas (gas layer) such as air accumulates. Since the gas layer is set to a pressure lower than the atmospheric pressure by the vacuum pump 43, bubbles contained in the molten metal passing through the intermediate container 31 are removed from the molten metal by being expanded and absorbed by the gas layer. It is. That is, the inside of the intermediate container 31 has a degassing action of the molten metal.

  Further, as described above, in the present embodiment, since the molten metal is discharged using the siphon unit main body 30 using atmospheric pressure, the pressurized gas and the molten metal are separated as in the conventional high-pressure method. There is no jetting, and it is not necessary to take measures to prevent jetting while preventing air bubbles from entering.

  As a result, when the molten metal in the ladle is discharged to the outside, the characteristics of the molten metal are not deteriorated.

  In the above embodiment, the motorized valve 37 is automatically opened and closed by the comparison unit 41 and the control unit 42. However, the valve may be manually opened and closed. In this case, the user manually opens and closes the valve while looking at the numerical value of the pressure gauge.

  In the above embodiment, the suction pressure of the vacuum pump 43 is controlled by the valve 44. However, the present invention is not limited to this. That is, a lever that changes the rotational speed of the rotor of the vacuum pump 43 may be provided in the vacuum pump, and the suction pressure of the vacuum pump 43 may be controlled by the lever.

  Moreover, in the said embodiment, although the siphon part main body 30 was set as the structure integrally formed in the flange part 21 of the ladle upper part 20, it is not restricted to this. That is, the siphon part main body 30 may be formed integrally with the ladle main body part 10.

  In the above embodiment, the rectifying member 36 is plate-shaped, but the present invention is not limited to this. The shape of the rectifying member 36 is not limited as long as it has a function of suppressing the momentum of the flow of the molten metal flowing into the intermediate container 31 from the inlet pipe 32.

  Furthermore, in the above embodiment, the intermediate container 31 is substantially a rectangular parallelepiped, but is not limited thereto. For example, it may be spherical. A small container may be used as long as it has an inlet pipe and an outlet pipe that are directed downward from itself and is sealed except for a connection portion between the inlet pipe and the outlet pipe.

  In the above embodiment, the inside of the storage unit 11 is pressurized using a pressurizing pump in order to allow the molten metal to flow into the intermediate container 31 and the outlet pipe 33, but is not limited thereto. For example, gas may be sucked from the opening 45 of the outlet pipe 33. Alternatively, the opening 45 of the outlet pipe 33 may be closed at the start of discharge, the liquid level 52 of the inlet pipe 32 may be raised by the vacuum pump 45, and the molten metal may flow into the intermediate container 31 and the outlet pipe 33.

[Embodiment 2]
It will be as follows if other embodiment regarding the ladle which is a container for liquids of this invention is described based on FIG. For convenience of explanation, members having the same functions as those in the drawings described in the first embodiment are denoted by the same reference numerals and description thereof is omitted.

  The ladle according to the present embodiment includes detection means for detecting the height of the liquid level of the molten metal in the intermediate container 31, and the liquid level in the intermediate container 31 is kept constant based on the detection means. By making it in this range, the liquid flow is stabilized, and further mixing of gas into the molten metal is further suppressed.

  As shown in FIG. 14, the ladle according to the present embodiment has three electrodes (lower electrode (detecting means) 141 a, intermediate electrode) whose lower ends are located in the intermediate container 31 and whose lower ends are different in height. (Detection means) 141b, upper electrode (detection means) 141c), electromagnetic valve (suction pressure variable means) 144 instead of the valve 44 described in the above embodiment, intermediate electrode detection section (detection means) 142, upper part An electrode detection unit (detection unit) 143 and a valve drive unit (suction pressure varying unit) 145 are provided. The pressure gauge 38, the electric valve 37, and the control device 46 that are included in the siphon unit main body 30 described in the above embodiment are not illustrated.

  The lower electrode 141a is an electrode at the lowest position among the three electrodes.

  The intermediate electrode 141b is an electrode having a lower end position at an intermediate height among the three electrodes. The height of the lower end is provided at a position higher than the height of the liquid surface 53 when the liquid flow is stabilized when the molten metal is discharged through the siphon unit body 30, that is, the position of the rectifying member 36. Yes.

  The upper electrode 141 c is an electrode having the lowest position among the three electrodes, and is set at a position lower than the lower end of the pipe connected to the vacuum pump 43.

  The upper electrode detector 143 is for detecting whether the lower electrode 141a and the upper electrode 141c are in an electrically conductive state or in a disconnected state. When the liquid level 53 of the molten metal in the intermediate container 31 reaches the lower end position of the upper electrode 141c, the lower electrode 141a and the upper electrode 141c are electrically connected through the molten metal and become conductive. Thereby, it is determined whether or not the liquid level 53 in the intermediate container 31 is lower than the lower end of the upper electrode 141c.

  When the upper electrode detection unit 143 detects that the lower electrode 141a and the upper electrode 141c are changed from the cut-off state to the conduction state, the upper electrode detection unit 143 outputs an ON signal to the valve drive unit 145.

  The intermediate electrode detection unit 142 is for detecting whether the lower electrode 141a and the intermediate electrode 141b are electrically connected or disconnected. When the liquid level 53 of the molten metal in the intermediate container 31 reaches the lower end position of the intermediate electrode 141b, the lower electrode 141a and the intermediate electrode 141b are connected via the molten metal and become conductive. Thereby, it is determined whether or not the liquid level in the intermediate container 31 is lower than the lower end of the intermediate electrode 141b.

  When the intermediate electrode detection unit 142 detects that the lower electrode 141a and the intermediate electrode 141b have changed from the conductive state to the cutoff state, the intermediate electrode detection unit 142 outputs an OFF signal to the valve drive unit 145.

  The valve drive unit 145 is for driving opening and closing of the electromagnetic valve 144. The valve drive unit 145 closes the electromagnetic valve 144 when receiving an ON signal from the upper electrode detection unit 143, and opens the electromagnetic valve 144 when receiving an OFF signal from the intermediate electrode detection unit 142.

  Since the electromagnetic valve 144 is connected to the vacuum pump 43, the gas in the intermediate container 31 is sucked when the electromagnetic valve 144 is opened. Further, when the electromagnetic valve 144 is closed, the gas in the intermediate container 31 is not sucked.

  When the liquid level 53 in the intermediate container 31 rises and reaches the lower end of the upper electrode 141c, the upper electrode detection unit 143 detects that the lower electrode 141a and the upper electrode 141c have changed from the cutoff state to the conductive state, An ON signal is output to the valve drive unit 145. The valve drive unit 145 receives the ON signal and closes the electromagnetic valve 144. In other words, the electromagnetic valve 144 and the valve drive unit 145 are suction pressure variable means for making the suction pressure of the vacuum pump 43 into the intermediate container 31 variable. As a result, the suction force of the vacuum pump 43 does not reach the intermediate container 31, the rise of the liquid level can be suppressed, and the molten metal is not sucked into the vacuum pump 43.

  Even when the liquid surface 53 reaches the lower end of the upper electrode 141c and the electromagnetic valve 144 is closed, the intermediate container 31 is sealed, so that the intermediate container 31 maintains a pressure state lower than the atmospheric pressure. Therefore, a degassing action acts on the molten metal flowing in the intermediate container 31, and the gas removed from the molten metal accumulates in the intermediate container 31, and the liquid level 53 may gradually decrease.

  When the liquid level 53 in the intermediate container 31 descends and reaches a position lower than the lower end of the intermediate electrode 141b, the intermediate electrode detector 142 confirms that the lower electrode 141a and the intermediate electrode 141c have changed from the conductive state to the cut-off state. It detects and outputs an OFF signal to the valve drive unit 145. In response to the OFF signal, the valve drive unit 145 opens the electromagnetic valve 144. Thereby, the suction force of the vacuum pump 43 extends into the intermediate container 31, and the lowering of the liquid level 53 can be suppressed, and a stable liquid flow can be maintained.

  Thus, in the ladle of this embodiment, the liquid level 53 in the intermediate container 31 can be kept within a certain range, the liquid flow is always stabilized, and the molten metal is sucked into the vacuum pump 43. Can be prevented.

In the present embodiment, the height of the liquid level 53 in the intermediate container 31 is detected using the three electrodes, the intermediate electrode detection unit 142, and the upper electrode detection unit 142. I can't. What is necessary is just to detect the height of the liquid level 53. For example, you may use the apparatus etc. which detect the height of a liquid level from the reflection time of the electromagnetic waves irradiated to the liquid level 53.
[Embodiment 3]
It will be as follows if other embodiment regarding the ladle which is a container for liquids of this invention is described based on FIGS. For convenience of explanation, members having the same functions as those in the drawings described in the first and second embodiments are denoted by the same reference numerals and description thereof is omitted.

  In the said embodiment, as shown in FIGS. 6-11, the high pressure gas is inject | poured into the storage part 11, the molten metal stored in the storage part 11 is sent into the siphon part main body 30, and the siphon part main body 30 serves as a siphon. When it began to function, it explained how to use the ladle to stop the high pressure gas injection and return the ladle to atmospheric pressure. As a result, it is not necessary to always mix the high-pressure gas and the molten metal during the discharge of the molten metal as in the prior art, so that mixing of the gas into the molten metal can be suppressed.

  In the ladle of this embodiment, the usage method of the ladle which can prevent mixing of the gas into a molten metal is further demonstrated. This method of use can be used when a predetermined amount of molten metal remains in the discharge destination holding furnace or when there is a molten metal reservoir where molten metal is stored.

  FIG. 15 is a cross-sectional view showing a ladle according to this embodiment. The ladle according to this embodiment includes a valve drive unit 146 in addition to the configuration of the ladle according to the above-described embodiment illustrated in FIG. 14, and further includes an electromagnetic three-way valve 123 instead of the three-way valve 23. . Further, a holding furnace (discharge container) 61 that is a discharge destination of the molten metal is disposed. Reference numeral 62 denotes the liquid level of the holding furnace 61.

  When the intermediate electrode detection unit 142 detects that the lower electrode 141a and the intermediate electrode 141b are changed from the cutoff state to the conduction state, the intermediate electrode detection unit 142 outputs an ON signal to the valve drive unit 146.

  When the valve drive unit 146 receives an ON signal from the intermediate electrode detection unit 142, the valve drive unit 146 drives the electromagnetic three-way valve 123 to open the storage unit 11 to the atmosphere. The valve driving unit 146 can also drive the electromagnetic three-way valve 123 in response to a signal from an operation input unit (not shown).

  During the discharge of the molten metal, the liquid level 53 may rise due to the suction pressure of the vacuum pump 43 with respect to the inside of the intermediate container 31. At such time, the ladle of this embodiment has the following actions.

  When the height of the liquid level 53 in the intermediate container 31 reaches the position of the lower end of the upper electrode 141c, the lower electrode 141a and the upper electrode 141c are electrically connected via the molten metal, and the upper electrode detector 143 is Then, it is detected that the upper electrode 141c and the lower electrode 141a are changed from the cut-off state to the conductive state. The upper electrode detection unit 143 outputs an ON signal to the valve drive unit 145 when detecting a change from the cutoff state to the conduction state.

  The valve drive unit 145 to which the ON signal is input closes the motor operated valve 144. Thereby, since the suction of the gas in the intermediate container 31 is stopped, the rise of the liquid level 53 can be suppressed. Therefore, the molten metal is not sucked by the vacuum pump 43.

  When the motor-operated valve 144 is closed, the atmospheric pressure in the intermediate container 31 is kept constant in a reduced pressure state. However, when the molten metal passes through the intermediate container 31 under reduced pressure, the gas originally contained in the molten metal is released into the intermediate container 31 due to the degassing action. Therefore, the atmospheric pressure in the intermediate container 31 gradually increases, and the liquid level 53 may be lowered.

  When the liquid level 53 in the intermediate container 31 reaches a position lower than the lower end of the intermediate electrode 141b, the intermediate detection unit 142 detects that the intermediate electrode 141b and the lower electrode 141a are changed from the conductive state to the cutoff state. . Then, the intermediate electrode detection unit 142 outputs an OFF signal to the valve drive unit 145.

  The valve drive unit 145 to which the OFF signal is input opens the motor operated valve 144. Thereby, since the suction of the gas in the intermediate container 31 is resumed, the descent of the liquid level 53 can be suppressed. Therefore, the liquid level 53 in the intermediate container 31 does not become lower than the rectifying member 36.

  As described above, the suction pressure with respect to the inside of the intermediate container 31 of the vacuum pump 43 is changed by the opening / closing control of the electromagnetic valve 144 according to the detection by the intermediate electrode detection part 142 and the upper electrode detection part 143, and the liquid in the intermediate container 31 is changed. The surface 53 can be in a range from the lower end of the intermediate electrode 141b to the lower end of the upper electrode 141c. Therefore, the momentum of the molten metal flowing into the intermediate container 31 from the inlet pipe 32 is suppressed by the rectifying member 36, and the liquid flow and the liquid level are always stable. Further, since the liquid level 53 does not reach the upper surface of the intermediate container 31, the molten metal is not sucked into the vacuum pump 43.

Next, the usage method of the ladle in this embodiment is demonstrated, referring FIGS. 16-18. FIG. 18 shows the experimental results when the liquid was discharged using the ladle of this embodiment. In FIG. 18, the horizontal axis indicates the elapsed time, and the vertical axis indicates the voltage value when the reduced pressure amount is converted from the atmospheric pressure P ₀ in the intermediate container 31 to a voltage value that is an electrical signal. Show. That is, the larger the voltage value, the smaller the pressure P1 in the intermediate container 31. FIG. 18 is a graph showing the results when water is used as the liquid. Theoretically, a similar graph is obtained even when the liquid is a molten metal.

  First, the opening 45 of the outlet pipe 33 is immersed in the molten metal in the discharge destination holding furnace 61. In addition, the electromagnetic three-way valve 123 is closed using the operation input unit and the valve drive unit 146 in order to make the storage unit 11 sealed.

  Next, with the electromagnetic valve 144 opened, the vacuum pump 43 is operated to lower the atmospheric pressure in the intermediate container 31 (see “T1: Suction start” in FIG. 18). Due to the difference between the atmospheric pressure in the intermediate container 31 and the atmospheric pressure in the storage unit 11, the molten metal in the storage unit 11 starts to rise up the inlet pipe 32. At the same time, due to the difference between the pressure in the intermediate vessel 31 and the pressure in the holding furnace 61 (the holding furnace 61 is at atmospheric pressure because it is open to the atmosphere), the molten metal remaining in the holding furnace 61 is also discharged from the outlet pipe 33. Begins to rise.

  Then, the inlet pipe 32 and the outlet pipe 33 are filled with the molten metal, and the molten metal accumulates in the intermediate container 31, whereby the siphon unit body 30 functions as a siphon. FIG. 16 is a cross-sectional view of the ladle when the molten metal starts to accumulate in the intermediate container 31.

  Here, when the inside of the storage unit 11 is not sealed, both the inside of the storage unit 11 and the holding furnace 61 are at atmospheric pressure, and the liquid level 51 of the molten metal in the storage unit 11 is usually the liquid level 62 of the holding furnace 61. Because of the higher position, the molten metal in the storage unit 11 rises to the intermediate container 31 before the molten metal in the holding furnace 61 rises to the intermediate container 31. Then, the molten metal raised from the storage unit 11 flows into the outlet pipe 33, and a state in which gas remains in a part of the outlet pipe 33 occurs. Thereby, there exists a possibility that gas may mix in molten metal.

  Moreover, as soon as the molten metal in the storage unit 11 reaches the intermediate container 31 and begins to flow through the outlet pipe 33, the siphon unit body 30 functions as a siphon, and discharge of the molten metal begins. At this time, since the liquid level 53 in the intermediate container 31 is still at a position lower than the rectifying member 36, the liquid flow is not stable in the intermediate container 31, and gas may be mixed in the molten metal. .

  However, since the inside of the storage unit 11 is sealed, as the molten metal in the storage unit 11 ascends the inlet pipe 32, the gas volume in the storage unit 11 increases, and the atmospheric pressure in the storage unit 11 is higher than the atmospheric pressure. Lower. Therefore, the force to raise the molten metal stored in the holding furnace 61 to the outlet pipe 33 is larger than the force to raise the molten metal in the storage unit 11 to the inlet pipe 32. Thereby, even if the height of the liquid level 62 in the holding furnace 61 is lower than the height of the liquid level 51 in the storage unit 11, the molten metal that rises the inlet pipe 32 and the molten metal that rises the outlet pipe 33. Can reach the intermediate container 31 approximately at the same time, and no gas remains in the outlet pipe 33.

  Moreover, since the atmospheric | air pressure in the storage part 11 is lower than atmospheric pressure, even if the molten metal exists in the siphon part main body 30, discharge | emission of the molten metal from the storage part 11 to the holding furnace 61 is not performed. Therefore, by continuing the suction of the gas in the intermediate container 31 by the vacuum pump 43, the liquid level 53 in the intermediate container 31 can be brought over the rectifying member 36 before the discharge is started.

  When the liquid level 53 in the intermediate container 31 reaches the position of the lower end of the intermediate electrode 141b, the lower electrode 141a and the intermediate electrode 141b are electrically connected via the molten metal, and the intermediate electrode detection unit 142 is It is detected that the electrode 141b and the lower electrode 141a are changed from the cut-off state to the conductive state. When the intermediate electrode detection unit 142 detects a change from the cut-off state to the conduction state, the intermediate electrode detection unit 142 outputs an ON signal to the valve drive unit 146.

  The valve drive unit 146 to which the ON signal is input drives the electromagnetic three-way valve 123 to open the storage unit 11 to the atmosphere (see “T2: storage unit electromagnetic valve open” in FIG. 18). Thereby, the atmospheric pressure in the storage unit 11 becomes atmospheric pressure, and the molten metal in the storage unit 11 pushed by the atmospheric pressure is discharged to the holding furnace 61 through the inlet pipe 32, the intermediate container 31, and the outlet pipe 33. Being started.

  Thereafter, when the pressure in the intermediate container 31 continues to be reduced and the liquid level 53 in the intermediate container 31 reaches the upper electrode 141c, the upper electrode detection unit 143 outputs an ON signal to the valve drive unit 145. Then, the valve drive unit 145 closes the motor-operated valve 144, and the suction of the gas in the intermediate container 31 is stopped (see “T3: high level reaching suction stop” in FIG. 18). Thereby, the raise of the liquid level 53 can be suppressed. Thereafter, it is discharged stably.

  FIG. 17: shows sectional drawing of the ladle which shows the state at the time of discharge | emission. When the molten metal is discharged, the liquid level 53 in the intermediate container 31 is higher than the lower end of the intermediate electrode 141b as shown in FIG. Therefore, the molten metal that has flowed into the intermediate container 31 from the inlet pipe 32 is restrained by the rectifying member 36 and is discharged from the outlet pipe 33 without causing vortex or turbulence. Therefore, mixing of gas into the molten metal can be suppressed from the start of discharging the molten metal.

  In addition, the opening 45 of the outlet pipe 33 is previously immersed in the molten metal stored in the discharge destination holding furnace 61. Therefore, at the time of discharge, the discharged molten metal does not directly collide with the wall of the holding furnace 61 and the like, and gas can be prevented from being mixed into the molten metal.

  Thereafter, as the discharge amount increases (the remaining amount in the storage unit 11 decreases), the pressure in the intermediate container 31 decreases. This indicates that the discharge amount is proportional to the reduced pressure amount in the intermediate container 31 as in FIG. 13 described in the first embodiment. The comparison part 41 which detected that the pressure in the intermediate container 31 fell to the predetermined value transmits that fact to the control part 42 (refer to "T4: Pressure drop in the intermediate container" in FIG. 18). And the control part 42 opens the motor operated valve 37, and makes the inside of the intermediate | middle container 31 atmospheric pressure (refer "T5: air inflow" of FIG. 18). Thereby, the discharge is completed.

  As described above, in the method of using the ladle when discharging the molten metal from the ladle, the high-pressure gas and the molten metal do not coexist, so bubbles do not enter the molten metal.

  The present invention is not limited to the above-described embodiments, and various modifications can be made within the scope shown in the claims, and embodiments obtained by appropriately combining technical means disclosed in different embodiments. Is also included in the technical scope of the present invention.

  If it is the container for liquids of this invention, a liquid can be discharged | emitted, without mixing gas, such as air, in a liquid. Thereby, it can apply also to the containers for conveyance of liquids, such as a molten metal, and chemicals, such as organic substance.

It is sectional drawing which shows the ladle for molten metals which is one structural example of the container for liquids concerning this invention. It is sectional drawing which shows the ladle main-body part of the said ladle for molten metals. It is sectional drawing which shows the ladle upper part of the said ladle for molten metals. It is a top view which shows the said ladle for molten metals. It is sectional drawing which shows the siphon part of the said ladle for molten metals. It is sectional drawing which shows this ladle of the state from which the molten metal is discharged | emitted from the said ladle for molten metals. It is sectional drawing which shows this ladle of the state before molten metal is discharged | emitted from the said ladle for molten metals. It is sectional drawing which shows the ladle of the state immediately after a pressurization pump driving | operation start. It is sectional drawing which shows the ladle of the state in which a siphon part main body functions as a siphon. It is sectional drawing which shows the ladle of the state immediately before completion | finish of discharge | emission. It is sectional drawing which shows the ladle of the state after completion | finish of discharge | emission. It is sectional drawing which shows the structure of the conventional ladle for molten metals. It is a graph which shows the discharge | emission amount with respect to the difference of atmospheric pressure and the pressure in an intermediate container. It is sectional drawing which shows the ladle for molten metals which is another structural example of the container for liquids which concerns on this invention. It is sectional drawing which shows the ladle for molten metals which is another structural example of the container for liquids which concerns on this invention. It is sectional drawing of the said ladle for molten metals before the discharge start of molten metal. It is sectional drawing of the said ladle for molten metals when molten metal is discharged | emitted. It is a graph which shows the time change of the voltage value corresponded to the pressure reduction amount from the atmospheric pressure in an intermediate container.

Explanation of symbols

10 Ladle body (container body)
30 Siphon body (Siphon part)
31 Intermediate container (small container)
32 Inlet pipe (first pipe)
33 Outlet pipe (second pipe)
36 Rectifier (rectifier)
37 Electric valve (open / close means)
38 Pressure gauge (atmospheric pressure detection means)
41 Comparison part (determination means)
42 Control unit (control means)
43 Vacuum pump (suction means)
44 valve (intake pressure variable means)
45 opening (second opening of second tube)
46 opening (second opening of the first tube)
47 Piping (connection port)
61 Holding furnace (discharge vessel)
141a Lower electrode (detection means)
141b Intermediate electrode (detection means)
141c Upper electrode (detection means)
142 Intermediate electrode detector (detector)
143 Upper electrode detection part (detection means)
144 Solenoid valve (intake pressure variable means)
145 Valve drive (suction pressure variable means)

Claims (11)

A liquid container for transporting a liquid,
A container body for storing liquid;
A siphon part for discharging liquid from the container body part,
The siphon unit includes a first tube, a second tube, and a small container,
The first opening of the first tube and the first opening of the second tube are connected to the small container so as to communicate with the inside of the small container;
The second opening of the first tube is inside the container body and at a position lower than the small container;
The second opening of the second tube is outside the container main body and at a position lower than the second opening of the first tube;
Comprising suction means for sucking the gas inside the small container ;
A liquid container, wherein a rectifier that suppresses vortex or turbulence generated by the momentum of the flow of the liquid flowing into the small container from the first pipe is fixed to the small container.   2. The liquid container according to claim 1, further comprising suction pressure variable means for changing the suction pressure of the suction means. The small container is box-shaped,
The first opening of the first tube is connected to the bottom surface of the small container;
2. The liquid container according to claim 1 , wherein the rectifier is located above a connection portion between the bottom surface and the first pipe.   The liquid container according to claim 1, further comprising an atmospheric pressure detection unit configured to detect an atmospheric pressure inside the small container. Said small container, wherein the communication port with the outside for returning the internal pressure itself to atmospheric pressure, to claim 1 or 4, characterized in that it has a closing means for opening and closing the communication port Container for liquid. Determination means for determining whether or not the detected atmospheric pressure detected by the atmospheric pressure detection means is smaller than a predetermined value;
The liquid container according to claim 5 , further comprising a control unit that opens the communication port when the determination unit determines that the detected atmospheric pressure is smaller than a predetermined value.   The liquid container according to claim 1, wherein an inner diameter of the second tube is smaller than an inner diameter of the first tube.   The liquid container according to claim 1, wherein the second pipe is connected to the small container so as to have an angle of approximately 45 ° with respect to a horizontal plane. It has a detection means to detect the amount of liquid in the small container,
The liquid container according to claim 2, wherein the suction pressure varying means changes the suction pressure based on the amount of liquid detected by the detection means. A method for using the liquid container according to any one of claims 1 to 9 ,
A first step of immersing the second opening of the second tube in the liquid stored in the discharge container of the discharge destination, and bringing the container body into a sealed state;
After the first step, the second step of sucking the gas in the small container by the suction means and pulling up the liquid in the container main body and the liquid stored in the discharge container to the small container;
After the second step, when a predetermined amount of liquid enters the small container, the container main body is opened to the atmosphere, and a third step is performed to discharge the liquid from the container main body. How to use the liquid container. It is a usage method of the container for liquids according to claim 10 ,
After the third step, a fourth step of changing the suction pressure of the suction means for the small container according to the liquid amount of the small container in order to keep the liquid amount of the small container within a certain range. A method for using a container for liquid, further comprising:

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