JP5676865B2 - Mixing equipment - Google Patents

Description

  The present invention relates to a mixing device. Specifically, for example, the present invention relates to a mixing device that mixes fuel (oil) and water.

The mixing operation is mainly to mix two or more kinds of powders or liquids to obtain a homogeneous mixture. The mixing device performs these operations to produce food, medicine, cosmetics, paper, rubber, glass, ceramics, metal, plastic products, and the like.
As a mixing operation, for example, a method is known in which a liquid is forcibly stirred by a mixer or the like to form an emulsion of two liquids, and the reaction proceeds by increasing the interface ratio and decreasing the diffusion distance. For example, there is a batch type process in which a raw material is charged into a container and mixed with a stirring blade for a predetermined time.

  However, in the batch type process, for example, when producing a mixed fuel of oil and water, the component ratio and the like are uneven, it is not possible to perform sufficient stirring and mixing, and it is difficult to set the temperature condition. Decreases.

Therefore, a continuous processing apparatus has been proposed in which a stirrer is rotated in a relatively small container through which a fluid is continuously circulated.
For example, Patent Document 1 describes a stirring device as shown in FIG. That is, in the stirring apparatus described in Patent Document 1, the stirring tank 104 is assembled with an upper part 104A having two liquid injection ports (101, 102) and a lower part 104B having one liquid discharge port 103. . A stirring bar 110 is rotatably provided in the stirring tank 104. The stirrer 110 is composed of a large number of blades provided radially between upper and lower disks. Further, outside the stirring tank 104, a rotatable permanent magnet 113 connected to the shaft 105 of the stirring motor is disposed opposite to the upper disk of the stirring bar 110. Further, the liquid A and the liquid B injected from the liquid injection ports (101, 102) are mixed and stirred, and the liquid mixture is discharged to the outside from the liquid discharge port 103.

  Patent Document 2 describes a mixer as shown in FIG. That is, in the mixer described in Patent Document 2, a rotor 202 made of a rod-shaped permanent magnet is placed in a cylindrical mixer chamber 201 having a mobile phase liquid inlet 212 on the lower side and an outlet 213 on the upper side. In addition, there is a donut-shaped coil chamber 203 fixed on the outer periphery of the mixer chamber 201, and the coil chamber 203 has a plurality of pairs of magnetic poles 204 facing each other with the mixer chamber 201 interposed therebetween. A coil 206 for exciting is wound.

JP-A-1-262936 JP 2001-9254 A

However, in the stirring apparatus of Patent Document 1, the stirrer is disk-like as a whole, the action of dynamically convection of the fluid is small, and the mixing effect is insufficient.
Moreover, in the mixer of Patent Document 2, a constant convection mixing effect is obtained by the rod-shaped rotor, but a short circuit flow occurs from the inlet to the outlet, which may reduce the mixing effect.

  The present invention has been made in view of the above points, and an object of the present invention is to provide a mixing apparatus capable of performing efficient and sufficient stirring and mixing.

  In order to achieve the above object, the mixing device of the present invention is provided with a fluid discharge port for discharging a fluid and a fluid introduction port for introducing a fluid, and a predetermined sealed space is formed therein. An outer wall member, and a mixer provided with a first fluid supply port which is disposed in a predetermined sealed space of the outer wall member and communicates with the fluid discharge port by a conduit configured to be able to maintain a sealed state. The mixer includes a container having a substantially cylindrical hollow portion, and a discharge port provided on a swirling shaft of a vortex generated in the container, wherein the container includes the first The first chamber is provided with a fluid supply port and the second chamber is provided with the discharge port. The first chamber and the second chamber are connected by a communication hole, and the second chamber of the container A fluid is supplied to the swirl axis of the vortex near the discharge port Has a fluid supply port, said first fluid supply port in a direction to generate a vortex inside the container, the fluid discharged from the fluid outlet is configured as supplying a device.

Here, the closed space is provided by the mixer provided with the first fluid supply port which is disposed in the predetermined sealed space of the outer wall member and communicates with the fluid discharge port by a conduit configured to be able to maintain a sealed state. The fluid flowing in the fluid is discharged from the fluid discharge port, passes through a conduit configured to be able to maintain a sealed state, and is supplied to the first fluid supply port of the mixer so as to be mixed in a closed circuit (closed circuit). Since it is processed, the number of passes can be mixed with a small amount of liquid.
In addition, since the fluid is mixed in a closed circuit (closed circuit) in a sealed space or a sealed conduit, there is no risk of impurities being mixed, and there is no risk of gas diffusion.

  Further, in the mixing apparatus of the present invention, the outer wall member is configured to adjust the temperature of the sealed space, and the outer wall member has a cooling water passage formed inside and through which the cooling water passes. The temperature rise due to heat generated by mixing can be suppressed, and an appropriate temperature can be maintained.

  Furthermore, in the mixing device of the present invention, the outer wall member is configured to adjust the temperature of the sealed space, and when the outer wall member is a heating member, the viscosity of the fluid is lowered by heat to improve the fluid flow. Can do.

  In the mixing device of the present invention, the outer wall member is provided with a fluid outlet from which the fluid in the sealed space is taken out, and the mixing device has a flow rate of the fluid taken out when the fluid is taken out from the fluid outlet. And a solenoid valve configured to introduce a fluid having substantially the same flow rate into the fluid introduction port.

  In the mixing device of the present invention, when the outer wall member is spherical, the fluid flow is better than when the outer wall member is angular.

  The mixing apparatus according to the present invention is efficient and can perform sufficient stirring and mixing.

It is the schematic which shows one structural example of the mixing apparatus of this invention. It is a schematic sectional drawing of an example of the mixer used for the mixing apparatus of this invention. It is the schematic which shows the state of the fluid in the mixer of FIG. It is a schematic sectional drawing of the conventional stirring apparatus. It is a schematic sectional drawing of the conventional mixer.

Hereinafter, embodiments of the present invention will be described with reference to the drawings to facilitate understanding of the present invention. In addition, although fuel and water are described as an example of the liquid to be mixed, the liquid to be mixed using the mixing apparatus of the present invention is not limited to these, for example, a plurality of types of liquid fertilizers Of course, a plurality of types of cosmetic liquids, a plurality of types of food liquids, and a plurality of types of chemical liquids can be mixed.
FIG. 1 is a schematic view showing one configuration example of the mixing apparatus of the present invention. The mixing apparatus 1 of the present invention includes an outer wall member 2 having a predetermined sealed space 2C formed therein, and a mixer 3 disposed in the sealed space 2C.
The outer wall member 2 is provided with a fluid discharge port 2A through which fluid is discharged and a fluid introduction port 2B through which fluid is introduced. Moreover, the outer wall member 2 is spherical.
Further, the outer wall member 2 is provided with a fluid outlet 2E from which the fluid in the sealed space 2C is taken out.
The outer wall member 2 is configured to adjust the temperature of the sealed space. Specifically, the outer wall member 2 includes a cooling water passage 2D formed inside and configured to pass cooling water (well water or tap water). . Further, for example, a heating lamp may be attached to the outer wall member 2 so that the outer wall member 2 acts as a heating member.
The cooling water passage 2D and the cooling water supply source 15 communicate with each other through a conduit 4E.

In addition, a first fluid supply pipe 16 is attached to the mixer 3. One end of the first fluid supply pipe 16 communicates with a first fluid supply port (not shown) provided in the mixer 3, and the other end of the first fluid supply pipe 16 is It is located outside the outer wall member 2 and communicates with the conduit 4A.
Further, the other end of the first fluid supply pipe 16 and the fluid discharge port 2A of the outer wall member 2 communicate with each other through a conduit 4A. A mixing pump 8 is attached to the conduit 4A, and a motor 9 that is a power source of the mixing pump is further attached to the mixing pump 8.
A second fluid supply pipe 17 is attached to the mixer 3. One end of the second fluid supply pipe 17 is located in the mixer 3 and functions as a second fluid supply port (not shown). The other end of the second fluid supply pipe 17 is the outer wall. It is located outside the member 2 and communicates with the conduit 4D.
Further, the other end of the second fluid supply pipe 17 and the water tank 14 in which water is stored communicate with each other through a conduit 4D. A water introduction electromagnetic valve 7 is electrically connected to the conduit 4D, and controls the water introduction valve 7A attached to the conduit 4D.

  Further, one end of a conduit 4B communicates with the fluid inlet 2B of the outer wall member 2, and the other end of the conduit 4B is connected to a fuel tank 13 in which fuel is stored. A fuel introduction valve 12 is attached at a position near the fluid introduction port 2B of the conduit 4B.

In addition, when the fluid (mixed fuel in which fuel and water are mixed) is taken out from the fluid outlet 2E, the mixing device 1 of the present invention supplies a fluid having a flow rate substantially the same as the flow rate of the taken out fluid. A mixed fuel take-off solenoid valve 6 configured to be introduced into 2B is provided.
That is, the mixed fuel take-out solenoid valve 6 is electrically connected to the conduit 4B communicating with the fluid inlet 2B and the conduit 4C communicating with the fluid outlet 2E, and the fuel introduction valve 12 attached to the conduit 4B. When the mixed fuel is taken out from the fluid outlet 2E by controlling the mixed fuel take-off valve 11 attached to the conduit 4C, the fluid inlet port supplies fuel having a flow rate substantially the same as the flow rate of the taken out mixed fuel. Introduce to 2B. A trochoid pump 10 is attached to the conduit 4C, and the mixed fuel is taken out from the fluid outlet 2E by the suction force of the trochoid pump 10.
The conduits 4A to 4E are configured to be able to maintain a sealed state.

Here, the mixing device of the present invention is provided with a fluid discharge port through which fluid is discharged, a fluid introduction port through which fluid is introduced, and an outer wall member in which a predetermined sealed space is formed, and an outer wall member And a mixer provided with a first fluid supply port that communicates with a fluid discharge port by a conduit configured to be able to maintain a sealed state. A container having a cylindrical hollow portion, and a discharge port provided on a swirl axis of a vortex generated inside the container, the container having a first chamber provided with a first fluid supply port; The second chamber is provided with a discharge port, the first chamber and the second chamber are connected by a communication hole, and fluid is placed on the swirl axis of the vortex near the discharge port in the second chamber of the container. It has a second fluid supply port to supply, and the first fluid supply port generates a vortex inside the container The outer wall member does not necessarily have a cooling water passage formed inside and through which cooling water passes. The outer wall member may not be spherical.
However, it is preferable that the outer wall member has a cooling water passage formed inside to allow the cooling water to pass therethrough, because an increase in temperature due to heat generated by stirring and mixing can be suppressed and an appropriate temperature can be maintained.
In addition, it is preferable that the outer wall member has a spherical shape because the fluid flow is improved as compared with the case of an angular shape.

[Operation of the mixing apparatus of the present invention]
Next, operation | movement of the mixing apparatus of this invention is demonstrated.
The fuel introduction valve 12 is opened, and the fuel in the fuel tank 13 is introduced into the fluid introduction port 2B of the outer wall member 2 through the conduit 4B by a pump.
Next, the fuel is sucked by the mixing pump 8, flows in the sealed space 2 </ b> C of the outer wall member 2 along the fluid flow direction 5, and is discharged from the fluid discharge port 2 </ b> A of the outer wall member 2.
Then, the fuel discharged from the fluid discharge port 2A enters the first fluid supply pipe 16 through the conduit 4A and is supplied into the mixer 3. On the other hand, the water introduction valve 7A is opened, and the water in the water tank 14 enters the second fluid supply pipe 17 through the conduit 4D by the pump and is supplied into the mixer 3.
The mixed fuel of the fuel and water discharged from the mixer 3 is sucked by the mixing pump 8, flows in the sealed space 2C of the outer wall member 2 along the fluid flow direction 5, and the fluid discharge port 2A of the outer wall member 2 Discharged from. Then, the mixed fuel discharged from the fluid discharge port 2 </ b> A enters the first fluid supply pipe 16 through the conduit 4 </ b> A and is supplied into the mixer 3. Also, water enters the second fluid supply pipe 17 and is supplied into the mixer 3.
Further, since the temperature in the mixer 3 rises due to the pumping of the liquid by the pump, the cooling water supplied to the cooling water passage 2D from the cooling water supply source 15 through the conduit 4E for temperature adjustment is It is discharged out of the outer wall member 2 through the cooling water passage 2D.

Such a process is continued until the fuel and water reach a predetermined ratio. Then, the mixed fuel in which the fuel and water are in a predetermined ratio is taken out from the fluid outlet 2E by the suction force of the trochoid pump 10 by opening the mixed fuel take-out valve 11, and is passed through the conduit 4C.
When the mixed fuel is taken out from the fluid outlet 2E, the fuel introduction valve 12 is opened, and the fuel in the fuel tank 13 is introduced into the fluid inlet 2B by the pump. At this time, the flow rate of the extracted mixed fuel and the flow rate of the fuel introduced into the fluid introduction port 2B are adjusted to be substantially the same.

[Mixer configuration]
FIG. 2 is a schematic cross-sectional view of an example of a mixer used in the mixing apparatus of the present invention. As shown in FIG. 2, one end of the first fluid supply pipe 16 communicates with the first fluid supply port 3A provided in the mixer 3, and one end of the second fluid supply pipe 17 is mixed. It is located in the machine 3 and functions as the second fluid supply port 3B.

The mixer 3 includes a container 19 having a substantially cylindrical hollow portion 19 </ b> A, and a discharge port 18 provided on a swirling axis of a vortex generated in the container 19.
The container 19 is provided with a first fluid supply port 3 </ b> A that communicates with one end of the first fluid supply pipe 16.
The first fluid supply port 3 </ b> A is configured to supply the fluid discharged from the fluid discharge port 2 </ b> A in a direction in which a vortex flow is generated inside the container 19.

The container 19 is divided into a first chamber 20 provided with the first fluid supply port 3A and a second chamber 21 provided with the discharge port 18, and the first chamber 20 and the second chamber 21 communicate with each other. The holes 22 are connected.
The container 19 also has a second fluid supply port 3B that supplies fluid (water) on the swirl axis of the vortex near the discharge port 18 in the second chamber 21.
The first chamber 20 includes a hemispherical portion 20A, a cylindrical portion 20B, and a hemispherical portion 20C. The second chamber 21 is composed of an outer surface 22A of the hemispherical portion 20C of the first chamber 20 and a single pipe nipple 23.

The second fluid supply pipe 17 is fixed to the approximate center of the screw cap 27, and an opening 27 </ b> A is provided around the second fluid supply pipe 17. Also, by attaching the screw cap 27 to the end of the single pipe nipple 23, one end of the second fluid supply pipe 17, that is, the second fluid supply port 3B is fixed in the vicinity of the discharge port 18 in the second chamber 21. The One end of the second fluid supply pipe 17, that is, the second fluid supply port 3 </ b> B is arranged in a state of protruding into the second chamber 21.
The opening diameter of the second fluid supply port 3 </ b> B is substantially the same as that of the communication hole 22.

A disc-shaped partition wall 24 is attached between the cylindrical portion 20B and the hemispherical portion 20C. The hemispherical portion 20A is attached with a lid 25 that closes a through hole formed in the hemispherical portion 20A.
Further, the cylindrical portion 20B is provided with a first fluid supply port 3A, and the first fluid supply port 3A and one end of the first fluid supply pipe 16 communicate with each other. The first fluid supply pipe 16 has a direction in which the liquid supplied from the pipe is supplied along the inner wall surface of the cylindrical portion 20B from the first fluid supply port 3A, that is, the cross-sectional circle of the cylindrical portion 20B. Installed tangentially. The first fluid supply port 3 </ b> A is provided on the side closer to the lid 25 than the partition wall 24 and close to the second chamber 21. In the present embodiment, the first fluid supply port 3 </ b> A is provided adjacent to the partition wall 24.

Further, a hollow inner pipe 26 is provided as a communication pipe having the same diameter as the communication hole 22 and coaxial with the communication hole 22 and penetrating the partition wall 24 and the hemispherical portion 20C. The inner pipe 26 extends from the communication hole 22 toward the lid 25 to a position closer to the lid 25 than the position of the first fluid supply port 3A.
Further, the diameter of the discharge port 18 is larger than the diameter of the communication hole 22.

[Mixer operation]
The operation of the mixer 3 configured as described above will be described with reference to FIG. FIG. 3 is a schematic diagram showing the state of the fluid in the mixer of FIG.

  The liquid 30 </ b> A supplied from the first fluid supply port 3 </ b> A of the mixer 3 is a fuel when the liquid is supplied to the mixing device 1 for the first time, and thereafter is a mixed fuel of fuel and water. The liquid supplied from the second fluid supply port 3 </ b> B is water 32 in the water tank 14.

  As shown in FIG. 3, the liquid 30 </ b> A supplied into the first chamber 20 is supplied along the inner wall surface of the cylindrical portion 20 </ b> B from the first fluid supply port 3 </ b> A, so that the inside of the first chamber 20 is filled. Swirling to generate a vortex 31. At this time, in the discharge port 18, a negative pressure portion of the swivel axis (center axis) is formed by the vortex 31, and a suction force is generated on the swivel axis. Here, from one end of the second fluid supply pipe 17 arranged so as to protrude into the second chamber 21, that is, from the second fluid supply port 3B, water 32 is sucked by the negative pressure of the central axis of the vortex 31, It will be stirred and mixed by the vortex.

  Further, in the second chamber 21, the surrounding liquid 30 </ b> B passes through the opening 27 </ b> A of the screw cap 27 due to the negative pressure of the central axis of the vortex 31, and the force to enter the second chamber 21 from the discharge port 18. Thus, the liquid 30 </ b> A that is about to flow into the second chamber 21 from the communication hole 22 is pressed.

The liquid 30A about to flow into the second chamber 21 from the communication hole 22 flows out from the discharge port 18 and the opening 27 so as to avoid the liquid 30B sucked by this negative pressure.
Further, from one end of the second fluid supply pipe 17 arranged so as to protrude into the second chamber 21, that is, from the second fluid supply port 3 </ b> B, water 32 is sucked by the negative pressure of the central axis of the vortex 31, and the liquid It reaches the boundary between 30A and the liquid 30B. As a result, the water 32 is sheared, mixed with the liquid 30 </ b> A flowing into the second chamber 21 from the communication hole 22, and ejected from the discharge port 18 and the opening 27.

  Further, since the container 19 is divided into the first chamber 20 and the second chamber 21 and connected by the communication hole 22, when the vortex 31 generated in the first chamber 20 enters the second chamber 21, It tries to proceed straight toward the discharge port 18 and the opening 27A. At this time, the liquid 30C in the space outside the boundary surface connecting the discharge port 18 and the communication hole 22 of the second chamber 21 is agitated in the second chamber 21 by the flow of the vortex flow on the boundary surface. Become. Here, the water 32 supplied into the second chamber 21 from one end of the second fluid supply pipe 17, that is, the second fluid supply port 3 </ b> B, is sheared when colliding with the boundary surface, and more than the boundary surface. It enters the liquid 30C in the outer space, and is further stirred and mixed. Further, the water 32 supplied from one end of the second fluid supply pipe 17, that is, the second fluid supply port 3 </ b> B is supplied into the second chamber 21 and is not supplied directly to the first chamber 20. The water 32 is less likely to enter the first chamber 20 and does not easily affect the formation of the vortex 31 in the first chamber 20.

  Further, since the inner pipe 26 extending from the communication hole 22 toward the lid 25 to a position closer to the lid 25 than the position of the first fluid supply port 3A is connected to the communication hole 22, the first As the liquid 30A supplied from the fluid supply port 3A rotates around the inner pipe 26, a turbulent flow 31 with less turbulence is formed. Since the inner pipe 26 has a length up to a position just before the surface that bisects the volume of the first chamber 20, the liquid 30 </ b> A supplied from the first fluid supply port 3 </ b> A is formed in the formed vortex 31. The influence exerted is reduced and the formed vortex 31 flows smoothly into the inner pipe 26.

As described above, the mixing device of the present invention includes the first fluid supply port that is disposed in the predetermined sealed space of the outer wall member and communicates with the fluid discharge port by the conduit configured to be able to maintain the sealed state. Since the mixer provided is provided, the fluid flowing in the sealed space is discharged from the fluid discharge port and supplied to the first fluid supply port of the mixer through the conduit configured to be able to maintain the sealed state. As described above, since the mixing process is performed in a closed circuit (closed circuit), it is possible to mix a large number of times of passage with a small amount of liquid, and therefore, efficient and sufficient stirring and mixing can be performed.
In addition, since the fluid is mixed in a closed circuit (closed circuit) in a sealed space or a sealed conduit, there is no risk of impurities being mixed, and there is no risk of gas diffusion.

  In addition, the outer wall member has a cooling water passage formed inside and through which cooling water (well water or tap water) passes, so that temperature rise due to heat generated by stirring and mixing can be suppressed, and an appropriate temperature can be maintained, Thereby, alteration of the fluid can also be suppressed.

DESCRIPTION OF SYMBOLS 1 Mixing apparatus 2 Outer wall member 2A Fluid discharge port 2B Fluid introduction port 2C Sealed space 2D Cooling water passage 2E Fluid outlet 3 Mixer 3A First fluid supply port 3B Second fluid supply port 4A Conduit 5 Flow direction of fluid 6 Mixed fuel take-off solenoid valve 7 Water introduction solenoid valve 7A Water introduction valve 8 Mix pump 9 Motor 10 Trochoid pump 11 Mixed fuel take-off valve 12 Fuel introduction valve 13 Fuel tank 14 Water tank 15 Cooling water supply source 16 First fluid supply pipe 17 Second fluid supply pipe 18 Discharge port 19 Container 19A Hollow portion 20 First chamber 20A Hemispherical portion 20B Cylindrical portion 20C Hemispherical portion 21 Second chamber 22 Communication hole 22A Outer surface 23 Single tube nipple 24 Bulkhead 25 Lid 26 inner pipe 27 screw cap 27A opening 30A liquid 31 vortex 32 water 33 mixture

Claims (6)

An outer wall member provided with a fluid discharge port through which fluid is discharged and a fluid introduction port through which fluid is introduced, and in which a predetermined sealed space is formed;
A mixer provided with a first fluid supply port that is disposed in a predetermined sealed space of the outer wall member and communicates with the fluid discharge port by a conduit configured to be able to maintain a sealed state;
The mixer is
A container having a substantially cylindrical hollow portion;
A discharge port provided on the swirl axis of the vortex generated inside the container,
The container includes a first chamber provided with the first fluid supply port and a second chamber provided with the discharge port, and the first chamber and the second chamber are connected by a communication hole. The swirl axis of the eddy current provided near the discharge port in the second chamber of the container, coaxially with the communication hole, and protruding into the second chamber toward the communication hole A second fluid supply port for supplying a fluid thereon;
The diameter of the discharge port is larger than the diameter of the communication hole, and the opening diameter of the second fluid supply port is the same as the diameter of the communication hole,
The mixing device configured to supply the fluid discharged from the fluid discharge port in a direction in which the first fluid supply port generates a vortex in the container. The mixing apparatus according to claim 1, wherein the outer wall member is configured to adjust a temperature of the sealed space. The mixing apparatus according to claim 2, wherein the outer wall member has a cooling water passage formed inside and through which cooling water passes. The mixing apparatus according to claim 2, wherein the outer wall member is a heating member. The outer wall member is provided with a fluid outlet from which the fluid in the sealed space is taken out,
5. An electromagnetic valve configured to introduce a fluid having substantially the same flow rate as the flow rate of the removed fluid into the fluid introduction port when the fluid is taken out from the fluid outlet. The mixing device according to one. The mixing device according to any one of claims 1 to 5, wherein the outer wall member has a spherical shape.

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