JP6977532B2 - Mixer - Google Patents

Description

The present invention relates to a mixing device for mixing a fluid with a liquid.

In recent years, in fields such as the chemical industry and the biological industry, there are cases where bubbles having a diameter of 100 μm or less, called fine bubbles, are generated in a liquid. The finely divided bubbles do not float on the surface of the water and burst, but remain in the water for a long period of time. Then, various functions can be added to the liquid by efficiently mixing, diffusing, and dissolving the bubbles in the liquid.
Conventionally, for example, in sewage treatment, when biological treatment is performed with activated sludge, oxygen is mixed with treated water (sewage) in an aeration tank in order to supply oxygen to activated sludge (microorganisms) that decompose organic substances. ing.

In various water treatments, there is a tank provided with a mixing device for mixing a gas with the water to be treated. As such a mixing device, there is one in which an injection path is opened on the inner surface of the storage chamber and a discharge path is opened on another inner surface facing the inner surface (see, for example, Patent Document 1).

In such a mixing device, the water to be treated and the gas are injected into the storage chamber from the injection passage, the water to be treated and the gas are mixed in the storage chamber, and then the treated water (mixture) in the storage chamber is discharged from the discharge passage, for example. It is discharged into the aeration tank.
When the water to be treated and the gas are injected into the storage chamber from the injection channel, the gas becomes fine bubbles due to the cavitation effect. By making the gas in the water to be treated into fine bubbles in this way, the amount of gas that disperses from the water to be treated into the atmosphere can be reduced.

Japanese Unexamined Patent Publication No. 2000-000563

In the conventional mixing device described above, when the water to be treated and the gas are injected into the storage chamber from the injection path, the water and the gas to be treated are swirled in the storage chamber. At this time, it is preferable to sufficiently vortex the water to be treated and the gas in the storage chamber to bring the water to be treated and the gas into contact with each other to increase the oxygen concentration of the treated water.

In order to mix a fluid such as oxygen well with a liquid such as water to be treated, it is preferable to make the liquid and the fluid vortex greatly in the storage chamber to greatly disturb the behavior of the liquid and the fluid.
However, when the injection path and the discharge path are open on two opposite surfaces in the storage chamber as in the conventional mixing device, the liquid and the fluid are easily discharged from the discharge path without being caught in the vortex flow. There's a problem. Further, in the conventional mixing device, there is a problem that the installation space becomes large because the injection and discharge pipes project to both sides of the device.

An object of the present invention is to solve the above-mentioned problems and to provide a mixing device capable of efficiently mixing a liquid and a fluid in a space-saving manner.

In order to solve the above problems, the present invention is a mixing device for mixing a fluid with a liquid, and includes a processing tank having a storage chamber which is a rectangular parallelepiped space in which the liquid and the mixture of the fluids are stored. ing. On the inner surface of the storage chamber, an injection port for injecting the liquid and the fluid into the storage chamber is opened, and a discharge port for discharging the mixture from the storage chamber is provided. It is open. The inlet is located above the outlet. The inlet and outlet are located in the lower half region of the first inner surface of the side of the reservoir. Then, in a state where the mixture is stored up to the upper part of the storage chamber, the liquid and the fluid are injected into the storage chamber from the injection port, and the mixture is discharged from the discharge port. Two upper and lower vortices are generated in the mixture in the storage chamber.

In the mixing device of the present invention, the liquid and the fluid (gas or liquid) injected into the storage chamber from the injection port on the first inner surface come into contact with the second inner surface and the flow changes significantly. Then, the liquid and the fluid are largely swirled in the storage chamber and then discharged from the discharge port arranged on a surface other than the second inner surface.

As described above, in the mixing device of the present invention, the inlet and the outlet are open on two sides that do not face each other. In other words, since the discharge port is open on the inner surface other than the second inner surface facing the first inner surface where the injection port is opened, the liquid and fluid injected into the storage chamber are not caught in the vortex flow and are not caught in the vortex flow. The problem of being easily discharged can be reduced. As a result, the liquid and the fluid flow in the storage chamber while being caught in the vortex, and the behavior of the liquid and the fluid can be greatly disturbed, so that the liquid and the fluid can be mixed well.

Further, in the mixing device of the present invention, since the pipes of the injection path and the pipes of the discharge path do not protrude on both sides of the treatment tank, the installation space can be reduced and the degree of freedom in layout can be increased.

In the mixing device mentioned above, by arranging the inlet and the outlet to the first inner surface, since the two vortex is formed in the storage chamber, can be mixed well and the liquid and the fluid.

As a reference example of the present invention, in the above-mentioned mixing device, when the first inner surface is the inner surface of the side portion of the storage chamber, the injection port is arranged above the first inner surface and the discharge port is the first inner surface. It may be placed at the bottom.

In the above-described mixing device, the first inner surface Ri inner surface der side of the storage chamber, the inlet and outlet are arranged in the lower portion of the first inner surface.
In this configuration, the liquid and fluid injected into the reservoir through the inlet will form an upper vortex and a lower vortex. At this time, the buoyancy of the fluid increases the force of the upper vortex flow, so that the liquid and the fluid can be mixed well.

In the above-mentioned mixing device, when the injection port is arranged above the discharge port, the liquid and the fluid flow from the upper vortex flow to the lower vortex flow and are discharged from the discharge port. Can be mixed well.

As a reference example of the present invention, in the above-mentioned mixing device, when the first inner surface is the inner surface of the side portion of the storage chamber, the injection port is arranged at the lower part of the first inner surface, and the discharge port is provided. May be placed on the inner surface of the top of the reservoir.
In this configuration, the liquid and the fluid vortex greatly in the storage chamber, and the buoyancy of the fluid increases the force of the vortex, so that the liquid and the fluid can be mixed well.

As a reference example of the present invention, in the above-mentioned mixing device, when the first inner surface is the inner surface of the top of the storage chamber, the discharge port is arranged below the inner surface of the side portion of the storage chamber. Is preferable.
In this configuration, the liquid and fluid vortex significantly in the reservoir, allowing the liquid and fluid to mix well.

In the mixing apparatus described above, the the inner surface of the storage chamber, said first inner surface and a second inner surface facing the back and forth and the third inner surface and a fourth inner surface facing the right and left, but are arranged in rectangular tube If so, it is preferable that the distance between the first inner surface and the second inner surface is longer than the distance between the third inner surface and the fourth inner surface.
The distance between the first inner surface and the second inner surface is preferably between 2 and 4 times the distance between the third inner surface and the fourth inner surface, preferably 2.5 times. It is more preferably between 3 and 3.5 times.

In this configuration, the storage chamber becomes a flat space. Then, when the storage chamber is formed in a flat space, the direction vector of the eddy current becomes two-dimensional. As a result, the vortex flow formed in the storage chamber can be stabilized, so that the liquid and the fluid can be mixed well.
The degree of flatness of the storage chamber can be adjusted by stacking the adjusting plate on the inner surface of the storage chamber.

In the mixing device of the present invention, the liquid and the fluid can be mixed well, and the installation space can be reduced, so that the liquid and the fluid can be efficiently mixed in a small space.

It is a perspective view which showed the mixing apparatus which concerns on 1st Embodiment of this invention. It is sectional drawing which showed the mixing apparatus which concerns on 1st Embodiment of this invention. It is sectional drawing which showed the mixing apparatus which concerns on the 1st reference example of this invention. It is a perspective view which showed the mixing apparatus which concerns on the 2nd reference example of this invention. It is sectional drawing which showed the mixing apparatus which concerns on the 3rd reference example of this invention. It is sectional drawing which showed the mixing apparatus which concerns on the 4th reference example of this invention. It is a perspective view which showed the mixing apparatus which concerns on 2nd Embodiment of this invention.

Embodiments of the present invention will be described in detail with reference to the drawings as appropriate. The description of the constituent elements described below is based on typical embodiments and specific examples, but the present invention is not limited to such embodiments.
In this typical embodiment, a mixing device used for sewage treatment for purifying treated water (sewage) such as domestic wastewater will be described.
In the biological treatment with activated sludge, the mixing device of the present embodiment provides oxygen (patent claim) to the water to be treated (“liquid” in the claims) in order to supply oxygen to the activated sludge (microorganism) that decomposes organic substances. It mixes "fluids") in the range of.
In the description of each embodiment, the same components are designated by the same reference numerals, and duplicate description will be omitted.

[First Embodiment]
As shown in FIG. 1, the mixing device 1A of the first embodiment includes a treatment tank 2A having a storage chamber 10 and an injection passage 15 and a discharge passage 16 provided in the treatment tank 2A.
In the mixing device 1A, the water to be treated and oxygen are injected into the storage chamber 10 from the injection passage 15, oxygen is mixed with the water to be treated in the storage chamber 10, and then the treated water and oxygen are mixed (patent claim). The “mixture”) in the above range is discharged from the storage chamber 10 through the discharge passage 16 to an outer tank (not shown) such as an aeration tank or a regulating tank (drainage tank).

The treatment tank 2A is a hollow rectangular parallelepiped, and a storage chamber 10 is formed inside the treatment tank 2A. The treatment tank 2A includes a pair of upper and lower top plates 20 and a bottom plate 30, a pair of left and right left wall 40 and right wall 50, and a pair of front and rear front walls 60 and rear wall 70.

The top plate 20 and the bottom plate 30 are rectangular flat plates arranged horizontally. The top plate 20 is arranged directly above the bottom plate 30. The top plate 20 and the bottom plate 30 have the same shape, and are formed longer in the left-right direction than in the front-back direction.
The top plate 20 constitutes the top of the storage chamber 10, and the bottom plate 30 constitutes the bottom of the storage chamber 10. That is, the inner surface 21 of the top plate 20 is the inner surface of the top of the storage chamber 10, and the inner surface 31 of the bottom plate 30 is the inner surface of the bottom of the storage chamber 10. The inner surface 21 of the top plate 20 and the inner surface 31 of the bottom plate 30 face each other in the vertical direction.

A left side wall 40 and a right side wall 50 are erected on the left and right edges of the bottom plate 30, respectively. The left side wall 40 and the right side wall 50 extend vertically upward with respect to the bottom plate 30. The left side wall 40 and the right wall 50 have the same shape, and are formed longer in the vertical direction than in the front-rear direction.

A front wall 60 and a rear wall 70 are erected on the front and rear edges of the bottom plate 30, respectively. The front wall 60 and the rear wall 70 extend vertically upward with respect to the bottom plate 30. The front wall 60 and the rear wall 70 have the same shape, and are formed longer in the vertical direction than in the horizontal direction.

The left side wall 40, the right side wall 50, the front wall 60, and the rear wall 70 form a square tubular body portion 80. The lower surface of the body 80 is closed by the bottom plate 30, and the upper surface of the body 80 is closed by the top plate 20.

The storage chamber 10 is a rectangular parallelepiped space whose outer periphery is surrounded by a body portion 80 and whose upper and lower surfaces are closed by a top plate 20 and a bottom plate 30.
On the inner surface of the storage chamber 10, a pair of upper and lower inner surfaces 21 and 31, a pair of left and right inner surfaces 41 and 51, and a pair of front and rear inner surfaces 61 and 71 are formed.

The inner surface 41 of the left side wall 40 (“first inner surface” in the claims) and the inner surface 51 of the right wall 50 (“second inner surface” in the claims) are the inner surfaces of the sides of the storage chamber 10. Yes, it is set up with respect to the inner surface 31 of the bottom plate 30. The inner surface 41 of the left side wall 40 and the inner surface 51 of the right side wall 50 face each other in the left-right direction.
The inner surface 61 of the front wall 60 (“third inner surface” in the claims) and the inner surface 71 of the rear wall 70 (“fourth inner surface” in the claims) are the inner surfaces of the sides of the storage chamber 10. , It is raised with respect to the inner surface 31 of the bottom plate 30. The inner surface 61 of the front wall 60 and the inner surface 71 of the rear wall 70 face each other in the front-rear direction.

The pair of inner surfaces 41, 51 facing the left and right and the pair of inner surfaces 61, 71 facing the front and back are arranged in a square cylinder shape.
In the mixing device 1A of the first embodiment, the distance between the inner surface 41 of the left side wall 40 and the inner surface 51 of the right side wall 50 is larger than the distance between the inner surface 61 of the front wall 60 and the inner surface 71 of the rear wall 70. It is formed long.
As described above, in the storage chamber 10 of the first embodiment, the width in the left-right direction is formed larger than the width (depth) in the front-rear direction. As a result, the space inside the storage chamber 10 is formed into a flat rectangular parallelepiped that is wide in the left-right direction and narrow in the front-rear direction.

As shown in FIG. 2, the treatment tank 2A of the first embodiment has an injection path 15 for injecting water to be treated and oxygen into the storage chamber 10, and a treatment tank 2A for discharging the treated water from the storage chamber 10. A discharge channel 16 is provided.

The injection path 15 is composed of an injection port 15a opened on the inner surface 41 of the left side wall 40, an injection hole 15b communicating with the injection port 15a, and an injection tube 15c provided on the outer surface of the left side wall 40.

The inlet 15a is open to the inner surface 41 of the left wall 40. The inlet 15a is a circular opening (see FIG. 1). The inlet 15a is arranged below the inner surface 41 of the left wall 40. Further, the injection port 15a is arranged at the center of the inner surface 41 of the left side wall 40 in the front-rear direction (see FIG. 1).
The injection hole 15b is a circular hole that communicates with the injection port 15a and penetrates the left side wall 40 in the left-right direction.

The tip of the injection tube 15c is attached to the outer surface of the left side wall 40, and the injection tube 15c communicates with the injection hole 15b. The base end portion of the injection pipe 15c is connected to a supply device (not shown), and the water to be treated and high-concentration oxygen are supplied together from the supply device to the injection pipe 15c. Then, the water to be treated and oxygen are injected from the injection pipe 15c through the injection hole 15b and from the injection port 15a into the storage chamber 10.

The discharge passage 16 is composed of a discharge port 16a opened on the inner surface 41 of the left side wall 40, a discharge hole 16b communicating with the discharge port 16a, and a discharge pipe 16c provided on the outer surface of the left side wall 40.

The discharge port 16a is open to the inner surface 41 of the left side wall 40. The discharge port 16a is a circular opening (see FIG. 1). The discharge port 16a is arranged below the inner surface 41 of the left side wall 40. Further, the discharge port 16a is arranged at the center of the inner surface 41 of the left side wall 40 in the front-rear direction (see FIG. 1).
The discharge hole 16b is a circular hole that communicates with the discharge port 16a and penetrates the left side wall 40 in the left-right direction.

The tip of the discharge pipe 16c is attached to the outer surface of the left side wall 40, and the discharge pipe 16c communicates with the discharge hole 16b. The base end portion of the discharge pipe 16c is connected to a pipe to the next step (for example, an outer tank such as an aeration tank or an adjustment tank). Then, the treated water in the storage chamber 10 is sent from the discharge port 16a to the next step through the discharge hole 16b and the discharge pipe 16c.

The injection port 15a and the discharge port 16a of the present embodiment are arranged below the central portion (boundary line L1) in the vertical direction of the inner surface 41 of the left side wall 40. Further, the injection port 15a and the discharge port 16a are arranged so as to sandwich the central portion (boundary line L2) in the vertical direction of the lower half of the inner surface 41 of the left side wall 40. The injection port 15a is arranged above the discharge port 16a.

Next, a process of mixing the water to be treated and oxygen will be described using the mixing device 1A of the first embodiment.
First, as shown in FIG. 2, water to be treated and high-concentration oxygen are supplied to the injection pipe 15c from a supply device (not shown), and the water to be treated and oxygen are injected into the storage chamber 10 from the injection port 15a. do.

When the water to be treated and oxygen are injected into the storage chamber 10 from the injection port 15a, the water to be treated and oxygen come into contact with the inner surface 51 of the right side wall 50 and the flow changes significantly. Then, the treated water and oxygen are swirled in the storage chamber 10 in the vertical direction, and then the treated water is discharged from the discharge port 16a on the inner surface 41 of the left side wall 40.

At this time, in the storage chamber 10 of the first embodiment, the upper vortex flow S1 and the lower vortex flow S2 are formed by the water to be treated and oxygen.
Then, the water to be treated and oxygen in the storage chamber 10 flow from the upper vortex flow S1 to the lower vortex flow S2, and the treated water is discharged from the discharge port 16a to the discharge hole 16b. Then, the treated water is sent to the next step through the discharge pipe 16c.

In the mixing device 1A of the first embodiment, since the injection port 15a and the discharge port 16a are not formed on the two facing surfaces, the water to be treated and oxygen are not caught in the vortex and are easily discharged from the discharge port 16a. The problem can be reduced. As a result, the water to be treated and oxygen flow in a long path in the storage chamber 10, and the behavior of the water to be treated and oxygen in the storage chamber 10 is greatly disturbed, so that the water to be treated and oxygen are sufficiently separated. Since they come into contact with each other, the water to be treated and oxygen can be mixed well.
Further, since the storage chamber 10 is a flat space, the direction vector of the eddy current becomes two-dimensional. As a result, the eddy current formed in the storage chamber 10 can be stabilized.
Therefore, in the mixing device 1A of the first embodiment, since the oxygen concentration of the treated water is high, the ability to decompose organic substances by activated sludge can be enhanced.

Further, in the mixing device 1A of the first embodiment, the injection pipe 15c connected to the injection port 15a and the discharge pipe 16c connected to the discharge port 16a are not linearly arranged on both sides of the processing tank 2, so that the mixture is mixed. The installation space of the device 1A can be reduced, and the degree of freedom in the layout of the mixing device 1A can be increased.

Next, a comparison between the oxygen dissolution efficiency of the mixing device 1A of the first embodiment shown in FIG. 1 and the oxygen dissolving efficiency of the conventional mixing device will be described.
In the mixing device 1A of the first embodiment, the length of the storage chamber 10 in the left-right direction is 95 mm, and the length of the storage chamber 10 in the front-rear direction is 28 mm. Further, the length of the storage chamber 10 in the vertical direction is 140 mm.
That is, in the storage chamber 10 of the first embodiment, the distance (length in the left-right direction) between the inner surface 41 of the left side wall 40 and the inner surface 51 of the right side wall 50 is the distance between the inner surface 61 of the front wall 60 and the rear wall 70. It is formed to be 3.4 times the distance (length in the front-rear direction) from the inner surface 71.

In the mixing device 1A of the first embodiment, the injection port 15a is arranged at a height of 55 mm from the lower edge portion of the inner surface 41 of the left side wall 40. Further, the inner diameter of the injection port 15a is 9 mm. Further, the inner diameter of the discharge port 16a is 13 mm. In the mixing device 1A of the first embodiment, the oxygen supply rate with respect to the flow rate of the water to be treated is 2.2%.

The storage chamber of the conventional mixing device has the same shape as the storage chamber 10 of the mixing device 1A of the first embodiment. Further, the injection port and the discharge port of the conventional mixing device have the same shape as the injection port 15a and the discharge port 16a of the mixing device 1A of the first embodiment. In the conventional mixing device, the injection port opens to the upper inner surface of the storage chamber, and the discharge port opens to the lower inner surface.
In the conventional mixing device, the water to be treated and oxygen are injected into the storage chamber at the same flow rate and oxygen supply rate as the mixing device 1A of the first embodiment.

Then, in the mixing device 1A of the first embodiment, as shown in FIG. 2, when the water to be treated and oxygen are injected into the storage chamber 10, the oxygen dissolution efficiency indicating the ratio of oxygen dissolved in the water to be treated is determined. I asked. Similarly, in the conventional mixing device, the oxygen dissolution efficiency when the water to be treated and oxygen are injected into the storage chamber was determined. In the first embodiment, the amount of oxygen dissolved in the water to be treated is obtained from the difference in the dissolved oxygen concentration between the water to be treated and the water to be treated, and the amount of oxygen dissolved in the water to be treated is the amount of oxygen supplied to the water to be treated. The value divided by was taken as the oxygen dissolution efficiency, and the oxygen dissolution efficiency of the treated water was measured.

As a result, the oxygen dissolution efficiency of the conventional mixer was 15.0%, and the oxygen dissolution efficiency of the mixer 1A of the first embodiment was 25.5%.
As described above, it was found that in the mixing device 1A of the first embodiment, the water to be treated and oxygen are mixed well as compared with the conventional mixing device.

In the mixing device 1A of the first embodiment as described above, the problem that the water to be treated and oxygen are not caught in the vortex and is easily discharged from the discharge port 16a can be reduced, so that the water to be treated and oxygen can be discharged. It flows in a long path while being caught in a vortex in the storage chamber 10, and the behavior of the water to be treated and oxygen in the storage chamber 10 is greatly disturbed.
In the mixing device 1A of the first embodiment, the water to be treated and oxygen can be mixed well and the installation space can be reduced, so that the water to be treated and oxygen can be efficiently mixed in a space-saving manner. Can be done.

Although the first embodiment of the present invention has been described above, the present invention is not limited to the first embodiment and can be appropriately modified without departing from the spirit of the first embodiment.
In the first embodiment, as shown in FIG. 1, the mixing device 1A used for sewage treatment has been described, but the types of liquids and fluids that can be mixed using the mixing device of the present invention are not limited. For example, another liquid may be mixed with the liquid.

In the mixing device 1A of the first embodiment, the shapes and sizes of the storage chamber 10, the injection port 15a and the discharge port 16a are not limited, and are appropriately set according to the required processing capacity.

In the mixing device 1A of the first embodiment, the injection port 15a and the discharge port 16a are arranged below the inner surface 41 of the left side wall 40, but as a reference example of the present invention, the injection port 15a and the discharge port 16a are on the left side. It may be arranged on the upper part of the inner surface 41 of the wall 40.

In the mixing device 1A of the first embodiment, the injection port 15a and the discharge port 16a are arranged at the center of the inner surface 41 of the left side wall 40 in the front-rear direction, but the injection port 15a and the discharge port 16a are arranged on the inner surface of the left side wall 40. It may be placed at the front or the back of the 41. Further, the injection port 15a and the discharge port 16a may be displaced in the front-rear direction.

In the mixing device 1A of the first embodiment, the injection port 15a and the discharge port 16a are opened on the inner surface 41 of the left side wall 40, but the inner surface 51 of the right side wall 50, the inner surface 61 of the front wall 60, or the inner surface of the rear wall 70. The inlet 15a and the outlet 16a may be opened in 71.

In the mixing device 1A of the first embodiment, the length of the storage chamber 10 in the left-right direction is formed to be 3.4 times the length in the front-rear direction, but when it is between 2 times and 4 times, the length is formed. The vortex flow formed in the storage chamber 10 is likely to be stable. Further, when the length of the storage chamber 10 in the left-right direction is between 2.5 times and 3.5 times the length in the front-rear direction, the vortex flow formed in the storage chamber 10 can be more stabilized. Therefore, the water to be treated and oxygen can be mixed well.

[ First reference example ]
Next, the mixing device 1B of the first reference example will be described.
As shown in FIG. 3, the mixing device 1B of the first reference example has different positions of the injection port 15a and the discharge port 16a from the mixing device 1A (see FIG. 2) of the first embodiment.

In the mixing device 1B of the first reference example , the injection port 15a and the discharge port 16a are opened on the inner surface 21 (“first inner surface” in the claims) of the top plate 20. As described above, in the mixing device 1B of the first reference example , the injection port 15a and the discharge port 16a are opened on the inner surface of the top of the storage chamber 10. The inner surface 21 of the top plate 20 faces the inner surface 31 of the bottom plate 30 (“second inner surface” in the claims).

The treatment tank 2B of the first reference example is the same as the treatment tank 2A of the first embodiment shown in FIG. 2, and the right side wall 50 of the treatment tank 2A of the first embodiment is on the lower side. The way of placing the treatment tank 2A of one embodiment is changed.

As shown in FIG. 3, the injection port 15a and the discharge port 16a of the first reference example are arranged to the left of the central portion (boundary line L3) in the left-right direction of the inner surface 21 of the top plate 20. The inlet 15a is arranged to the right of the outlet 16a. The inlet 15a and the outlet 16a are arranged so as to sandwich the central portion (boundary line L4) in the left-right direction of the left half of the inner surface 21 of the top plate 20.

In the mixing device 1B of the first reference example , when the water to be treated and oxygen are injected into the storage chamber 10 from the injection port 15a, the vortex flow S3 on the left side and the vortex flow S4 on the right side are formed.
In the storage chamber 10, the space to the right of the injection port 15a is larger in the left-right direction than the space to the left of the injection port 15a, so that the vortex flow S4 on the right side is larger than the vortex flow S3 on the left side.

Then, the water to be treated and oxygen in the storage chamber 10 flow from the vortex flow S4 on the right side to the vortex flow S3 on the left side and are discharged from the discharge port 16a.
In the mixing device 1B of the first reference example , since the injection port 15a and the discharge port 16a are not formed on the two facing surfaces, the water to be treated and oxygen are not caught in the vortex and are easily discharged from the discharge port 16a. The problem can be reduced. As a result, the water to be treated and oxygen flow in a long path while being caught in the vortex in the storage chamber 10, and the behavior of the water to be treated and oxygen in the storage chamber 10 is greatly disturbed, so that the water to be treated and oxygen are mixed with the water to be treated. Since the oxygen is sufficiently in contact with the water to be treated, the water to be treated and the oxygen can be mixed well.

The first reference example of the present invention has been described above, but as in the first embodiment, the present invention is not limited to the first reference example and can be appropriately modified without departing from the spirit of the first reference example. be.
In the mixing device 1B of the first reference example , the injection port 15a and the discharge port 16a are arranged in the area on the right side of the inner surface 21 of the top plate 20, but the injection port 15a and the discharge port 16a are located on the left side of the inner surface 21 of the top plate 20. It may be placed in the area.

[ Second reference example ]
Next, the mixing device 1C of the second reference example will be described.
As shown in FIG. 4, the mixing device 1C of the second reference example has different positions of the injection port 15a and the discharge port 16a from the mixing device 1A of the first embodiment (see FIG. 2).

In the mixing device 1C of the second reference example , the injection port 15a and the discharge port 16a are opened on the inner surface 41 (“first inner surface” in the claims) of the left side wall 40. The inner surface 41 of the left side wall 40 faces the inner surface 51 (“second inner surface” in the claims) of the right wall 50.
The left side wall 40 and the right side wall 50 of the second reference example are formed longer in the front-rear direction than in the up-down direction.

The treatment tank 2C of the second reference example is the same as the treatment tank 2A of the first embodiment shown in FIG. 2, and the rear wall 70 of the treatment tank 2A of the first embodiment is on the lower side. The way of placing the treatment tank 2A of one embodiment is changed.

In the second reference example , the injection port 15a and the discharge port 16a are arranged side by side. In the second reference example , the inlet 15a and the outlet 16a are arranged in the front part of the left side wall 40. The injection port 15a is arranged behind the discharge port 16a.

In the mixing device 1C of the second reference example , when the water to be treated and oxygen are injected into the storage chamber 10 from the injection port 15a, a front vortex and a rear vortex swirling in the lateral direction are formed.
Since the space behind the injection port 15a in the storage chamber 10 is larger in the left-right direction than the space in front of the injection port 15a, the posterior vortex flow is larger than the front vortex flow.

Then, the water to be treated and oxygen in the storage chamber 10 flow from the vortex flow on the rear side to the vortex flow on the front side and are discharged from the discharge port 16a.
In the mixing device 1C of the second reference example , since the injection port 15a and the discharge port 16a are not formed on the two facing surfaces, the water to be treated and oxygen are not caught in the vortex and are easily discharged from the discharge port 16a. The problem can be reduced. As a result, the water to be treated and oxygen flow in a long path while being caught in the vortex in the storage chamber 10, and the behavior of the water to be treated and oxygen in the storage chamber 10 is greatly disturbed, so that the water to be treated and oxygen are mixed with the water to be treated. Since the oxygen is sufficiently in contact with the water to be treated, the water to be treated and the oxygen can be mixed well.

The second reference example of the present invention has been described above, but as in the first embodiment, the present invention is not limited to the second reference example and can be appropriately modified without departing from the spirit of the second reference example. be.
In the mixing device 1C of the second reference example , the injection port 15a and the discharge port 16a are arranged in the front part of the inner surface 41 of the left side wall 40, but the injection port 15a and the discharge port 16a are arranged in the rear part of the inner surface 41 of the left side wall 40. May be placed in.
In the mixing device 1C of the second reference example , the injection port 15a and the discharge port 16a are opened in the inner surface 41 of the left side wall 40, but the inner surface 51 of the right side wall 50, the inner surface 61 of the front wall 60, or the inner surface of the rear wall 70. The inlet 15a and the outlet 16a may be opened in 71.

[ Third reference example ]
Next, the mixing device 1D of the third reference example will be described.
As shown in FIG. 5, the mixing device 1D of the third reference example has different positions of the injection port 15a and the discharge port 16a from the mixing device 1A (see FIG. 2) of the first embodiment.

The treatment tank 2D of the third reference example has the same shape as the treatment tank 2A of the first embodiment (see FIG. 2), and has the same placement as the treatment tank 2A of the first embodiment.

In the mixing device 1D of the third reference example , the injection port 15a is opened on the inner surface 41 (“first surface” in the claims) of the left side wall 40. The inner surface 41 of the left side wall 40 faces the inner surface 51 (“second inner surface” in the claims) of the right wall 50. The injection port 15a of the third reference example is arranged below the central portion (boundary line L2) in the vertical direction of the lower half of the inner surface 41 of the left side wall 40.

In the mixing device 1D of the third reference example , the discharge port 16a is opened on the inner surface 21 of the top plate 20. As described above, in the mixing device 1D of the third reference example , the discharge port 16a is opened on the inner surface of the top of the storage chamber 10. The discharge port 16a of the third reference example is arranged to the right of the central portion (boundary line L5) in the left-right direction of the inner surface 21 of the top plate 20.

In the mixing device 1D of the third reference example , when the water to be treated and oxygen are injected into the storage chamber 10 from the injection port 15a, one large vortex S5 is formed in the storage chamber 10. Then, the water to be treated and oxygen in the storage chamber 10 pass through the large vortex S5 and are discharged from the discharge port 16a.
In the mixing device 1D of the third reference example , since the injection port 15a and the discharge port 16a are not formed on the facing inner surfaces, the water to be treated and oxygen are not caught in the vortex and are easily discharged from the discharge port 16a. The problem can be reduced. As a result, the water to be treated and oxygen flow in a long path while being caught in the vortex in the storage chamber 10, and the behavior of the water to be treated and oxygen in the storage chamber 10 is greatly disturbed, so that the water to be treated and oxygen are mixed with the water to be treated. Since the oxygen is sufficiently in contact with the water to be treated, the water to be treated and the oxygen can be mixed well.

The third reference example of the present invention has been described above, but as in the first embodiment, the present invention is not limited to the third reference example and can be appropriately modified without departing from the spirit of the third reference example. be.
In the mixing device 1D of the third reference example , the injection port 15a is arranged below the inner surface 41 of the left side wall 40, but the injection port 15a may be arranged above the inner surface 41 of the left side wall 40.
In the mixing device 1D of the third reference example , the discharge port 16a is arranged in the region on the right side of the inner surface 21 of the top plate 20, but the injection port 15a may be arranged in the region on the left side of the inner surface 21 of the top plate 20.
In the mixing device 1D of the third reference example , the injection port 15a is opened on the inner surface 41 of the left side wall 40, but the injection port 15a is opened on the inner surface 51 of the right side wall 50, the inner surface of the front wall, or the inner surface of the rear wall. You may.

[ Fourth reference example ]
Next, the mixing device 1E of the fourth reference example will be described.
As shown in FIG. 6, in the mixing device 1E of the fourth reference example , the positions of the injection port 15a and the discharge port 16a are arranged in the opposite direction to the mixing device 1D (see FIG. 5) of the third reference example.

In the mixing device 1E of the fourth reference example , the injection port 15a opens in the region on the right side of the inner surface 21 (“first surface” in the claims) of the top plate 20, and the discharge port is located below the inner surface 41 of the left side wall 40. 16a is open.

In the mixing device 1E of the fourth reference example , when the water to be treated and oxygen are injected into the storage chamber 10 from the injection port 15a, one large eddy current S6 is formed in the storage chamber 10. Then, the water to be treated and oxygen in the storage chamber 10 pass through the large vortex S6 and are discharged from the discharge port 16a.
In the mixing device 1E of the fourth reference example , since the injection port 15a and the discharge port 16a are not formed on the facing inner surfaces, the water to be treated and oxygen are not caught in the vortex and are easily discharged from the discharge port 16a. The problem can be reduced. As a result, the water to be treated and oxygen flow in a long path while being caught in the vortex in the storage chamber 10, and the behavior of the water to be treated and oxygen in the storage chamber 10 is greatly disturbed, so that the water to be treated and oxygen are mixed with the water to be treated. Since the oxygen is sufficiently in contact with the water to be treated, the water to be treated and the oxygen can be mixed well.

Although the fourth reference example of the present invention has been described above, the present invention is not limited to the fourth reference example and can be appropriately modified without departing from the spirit of the third reference example. be.
In the mixing device 1E of the fourth reference example , the injection port 15a is arranged in the region on the right side of the inner surface 21 of the top plate 20, but the injection port 15a may be arranged in the region on the left side of the inner surface 21 of the top plate 20.
In the mixing device 1E of the fourth reference example , the discharge port 16a is arranged below the inner surface 41 of the left side wall 40, but the discharge port 16a may be arranged above the inner surface 41 of the left side wall 40.
In the mixing device 1E of the fourth reference example , the discharge port 16a is opened on the inner surface 41 of the left side wall 40, but the discharge port 16a is opened on the inner surface 51 of the right side wall 50, the inner surface of the front wall, or the inner surface of the rear wall. You may.

[ Second Embodiment ]
Next, the mixing device 1F of the second embodiment will be described.
As shown in FIG. 7, the mixing device 1F of the second embodiment is different from the mixing device 1A of the first embodiment (see FIG. 2) in that the adjusting plate 90 is arranged in the storage chamber 10. ..

In the mixing device 1F of the second embodiment , the adjusting plate 90 is superposed on the inner surface of the front wall 60 and the inner surface of the rear wall 70, respectively. That is, a pair of front and rear adjusting plates 90, 90 are inserted in the storage chamber 10. The adjusting plate 90 is a flat plate having the same shape as the inner surface 61 of the front wall 60 and the inner surface 71 of the rear wall 70.

In this configuration, the degree of flatness of the storage chamber 10 can be adjusted by superimposing the adjusting plate 90 on the inner surface of the storage chamber 10.
When the length of the storage chamber 10 in the left-right direction is between two and four times the length in the front-rear direction, the vortex flow formed in the storage chamber 10 is likely to be stable. Further, when the length of the storage chamber 10 in the left-right direction is between 2.5 times and 3.5 times the length in the front-rear direction, the vortex flow formed in the storage chamber 10 can be more stabilized. Therefore, the water to be treated and oxygen can be mixed well.

Further, by stacking the adjusting plate 90 on the inner surface of the storage chamber 10, the volume in the storage chamber 10 can be adjusted. Then, the volume in the storage chamber 10 is adjusted according to the type of the water to be treated and oxygen and the water to be treated, and the residence time of the water to be treated and oxygen in the storage chamber 10 is adjusted to obtain the water to be treated. Can be effectively mixed with oxygen.

Although the second embodiment of the present invention has been described above, the present invention is not limited to the second embodiment as in the first embodiment, and can be appropriately modified without departing from the spirit of the second embodiment. be.
In the mixing device 1F of the second embodiment , the adjusting plate 90 is overlapped on the inner surface 61 of the front wall 60 and the inner surface 71 of the rear wall 70, but the adjusting plate 90 is adjusted on the inner surfaces of the top plate 20, the bottom plate 30, the left side wall 40 and the right side wall 50. The plates 90 may be stacked. Further, the number of adjusting plates 90 inserted into the storage chamber 10 is not limited, and one adjusting plate 90 or three or more adjusting plates 90 may be inserted into the storage chamber 10.

When the adjustment plate 90 is placed on the inner surface where the injection port 15a or the discharge port 16a is open, a hole or a hole is formed in the adjustment plate 90 so that the adjustment plate 90 does not block the injection port 15a or the discharge port 16a. Form a notch.

According to the mixing device of the present invention, it can be installed in a drainage (irrigation) facility such as a building pit, a manhole or a factory provided in the basement of a building, for example. In the field of utilizing fine bubbles, for example, growth promotion and freshness maintenance of marine products and agricultural and livestock products, modification of food flavor and texture, cleaning and peeling of precision machinery and electronic parts, medical and pharmaceutical products, cosmetics, etc. It can be suitably used in various applications of.

1A mixing device (first embodiment)
1B mixing device ( first reference example )
1C mixing device ( second reference example )
1D mixing device ( third reference example )
1E Mixing device ( 4th reference example )
1F mixing device ( second embodiment )
2A treatment tank (first embodiment)
2B treatment tank ( first reference example )
2C processing tank ( second reference example )
2D processing tank ( third reference example )
2E treatment tank ( 4th reference example )
10 Storage chamber 15 Injection path 15a Injection port 15b Injection hole 15c Injection tube 16 Outlet channel 16a Outlet 16b Outlet hole 16c Outlet pipe 20 Top plate 21 Top plate inner surface 30 Bottom plate 31 Bottom plate inner surface 40 Left side wall 41 Left side wall inner surface 50 Right side wall 51 Inner surface of the right side wall 60 Front wall 61 Inner surface of the front wall 70 Rear wall 71 Inner surface of the rear wall 80 Body 90 Adjustment plate

Claims (3)

A mixing device for mixing a fluid with a liquid.
A treatment tank having a storage chamber, which is a rectangular parallelepiped space in which the liquid and a mixture of the fluids are stored, is provided.
On the inner surface of the storage chamber,
In addition to opening the inlet of the injection path for injecting the liquid and the fluid into the storage chamber,
The discharge port of the discharge path for discharging the mixture from the storage chamber is opened, and the discharge port is opened.
The inlet is located above the outlet and is located above the outlet.
The inlet and outlet are located in the lower half region of the first inner surface of the side of the reservoir .
In a state where the mixture is stored up to the upper part of the storage chamber, the liquid and the fluid are injected into the storage chamber from the injection port, and the mixture is discharged from the discharge port. A mixing device characterized in that two upper and lower vortices are generated in the mixture. The mixing device according to claim 1.
On the inner surface of the storage chamber, the first inner surface and the second inner surface facing each other in the front-rear direction and the third inner surface and the fourth inner surface facing the left and right are arranged in a square tube shape.
A mixing device characterized in that the distance between the first inner surface and the second inner surface is longer than the distance between the third inner surface and the fourth inner surface. The mixing device according to claim 2.
A mixing device characterized in that the distance between the first inner surface and the second inner surface is between 2 and 4 times the distance between the third inner surface and the fourth inner surface.

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