JP3086658B2 - Mixing device for two or more fluids - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for mixing two or more fluids, and more particularly to an apparatus for dynamically mixing at least two kinds of liquids, or liquids and gases, or powders. Is applied to, for example, a bath, a pool, a washing machine, etc. for 24 hours, and can purify the liquid by decomposing and separating organic substances present in the liquid by the action of ozone or air mixed as fine bubbles in the liquid. Related to the device.

[0002]

2. Description of the Related Art Conventionally, in the pulp and paper industry, for example, a so-called slurry in which pulp is dissolved in water is conveyed through a pipe, into which an oxidizing bleaching fluid or a dilution water for concentration adjustment is injected and mixed. There is a type of mixing in a fluid mixing device to obtain a uniform mixed fluid for a subsequent process, which is disclosed in, for example, Japanese Utility Model Publication No. Hei 2-2416 or Japanese Patent Publication No. Hei 3-91, and its schematic configuration Is shown in FIG.

[0003] In FIG. 6, a fluid mixing device 1 generally includes a collision body 3 composed of a bottomed cylindrical collision plate 4 in a large diameter cylindrical portion 2a of a main pipe 2 in a plurality of radial directions. It is stored and fixed via the rib 5 .
Then, when the slurry mixed with the oxidized bleaching fluid or the dilution water flows from the left upstream side in the figure as shown by the arrow A,
The slurry collides with the colliding body 3 and flows backward to form a vortex as indicated by a symbol B, and is further impinged and stirred with the slurry which flows in next. And reaches the downstream side as shown by arrows C and D.

[0004]

However, in the above-mentioned prior art, since the bottomed cylindrical impactor 3 is static, that is, merely stationary, the stirring efficiency of the slurry itself is still insufficient and the slurry concentration is uniform. Therefore, there was a problem that the measurement of the slurry concentration was inaccurate in the subsequent process, and high-quality paper could not be produced.

In FIG. 6, a water stream mixed with ozone gas or air may be used instead of the slurry for pulp. According to this, the water stream mixed with ozone gas or air is introduced into the fluid mixing device 1. Then, the gas bubbles are subdivided by the vortex to decompose and sterilize the organic matter in the water stream and to improve the floating and separating ability of the organic matter in the subsequent process.

However, also in this case, similarly, the stirring efficiency is insufficient, so that the diameter of the foam is reduced to only about 100 μm, and as a result, the ability to decompose, sterilize, and separate organic substances is insufficient. There was a problem.

[0007]

SUMMARY OF THE INVENTION An apparatus for mixing two or more fluids according to the present invention solves the above-mentioned problem, and has at least one kind of fluid which is conveyed to a predetermined position. A main pipe (12) having a cylindrical portion (12a);
A fluid introduction mechanism (13, 32) provided at least on the upstream side of the large-diameter cylindrical portion for introducing at least one other fluid into the main pipe; A fluid agitator (14) coaxially and rotatably housed in a cylindrical portion; and a drive mechanism (21, 22) for rotating and driving the fluid agitator. One fluid from the inlet and the fluid introduction mechanism (1)
The mixed fluid with the other fluid introduced from 3) is stirred by the blade (17) of the rotating fluid stirring body (14), and the fluid stirring body (14) is a bottomed cylindrical portion (16).
And the blade (17) provided on the outer periphery of the bottomed cylindrical portion
And at least a bottom plate portion (16) of the bottomed cylindrical portion.
a) with the large-diameter cylindrical portion (12a) arranged downstream
It is characterized by being arranged in.

[0008] Another two or more fluid mixing device according to the present invention conveys at least one kind of one fluid and places it at a predetermined position.
A main pipe (12) having a cylindrical portion (12a);
At least one kind provided at least on the upstream side of the cylindrical portion
Fluid introduction mechanism (1) for introducing another fluid into the main pipe.
3, 32) and a blade (17) provided on the outer periphery.
The flow accommodated coaxially and rotatably in the large-diameter cylindrical part
A body agitator (14) and a drive for rotating the fluid agitator
Moving mechanism (21, 22), and the main pipe (12)
From the fluid introduction mechanism (13) and one fluid from the inlet
The mixed fluid with the other fluid introduced is the rotating fluid
Stirred by the blade (17) of the stirrer (14)
The fluid introduction mechanism (13, 32) is provided above the large-diameter cylindrical portion.
It is characterized by being provided on each of the upstream side and the downstream side .

[0009]

According to the present invention, the mixed fluid of one fluid from the main pipe 12 and the other fluid from the fluid introduction mechanism 13 is dynamically changed by the rotational energy of the blade 17 of the fluid agitator 14 driven to rotate. Since the stirring is performed, the stirring is performed with higher efficiency than when the stirring body is simply stationary. In this case, the fluid agitator 14 has a bottomed cylindrical shape.
As a result, the mixed fluid collides with the bottom plate of the bottomed cylindrical part and flows backward
Vortices cause gas bubbles to be further miniaturized.
You.

That is, when ozone gas or air is introduced into a water stream from a fluid introduction mechanism 13 provided, for example, on the upstream side of the main pipe 12, the mixed fluid is formed by the blade of a rotating fluid agitator 14. 17, the gas is finely stirred, and the fine gas bubbles efficiently adhere to the organic matter in the water stream.

When an additional fluid introduction mechanism 32 is provided on the downstream side of the main pipe 12 to introduce additional ozone gas or air, the bubble of the additional gas wraps the micronized bubbles and forms organic matter. It improves decomposition / sterilization and increases the floating speed in the gas-liquid separation layer in the subsequent process.

Although the blade 17 has some compressor effect even when it is straight, the blade 17 has a large compressor effect particularly when the blade 17 is inclined or twisted, and compresses the stirred mixed fluid to further increase gas bubbles. Can be miniaturized.

The blade 17 is not a simple plate but a comb-like plate, a mesh plate or a needle.
The gas bubbles can be further miniaturized, and the processing efficiency of the liquid can be improved by making the material of the blade 17 a so-called activated material.

[0014]

In addition, at least two types of fluids (for example, a slurry and an oxidizing bleach) are supplied to the main pipe 12 in advance without providing a fluid introduction mechanism around the large-diameter cylindrical portion 12a of the main pipe 12. Even when a mixed fluid mixture is introduced, the fluid mixture is dynamically agitated by the fluid agitator 14 to be more uniformly agitated.

In this case, a fluid introduction mechanism 32 is provided only on the downstream side of the large-diameter cylindrical portion 12a to introduce ozone gas or air so that the gas bubbles adhere to the organic matter in the mixed fluid. You can also.

[0017]

BEST MODE FOR CARRYING OUT THE INVENTION A case in which an apparatus for mixing two or more fluids according to the present invention is applied to, for example, an apparatus for mixing and stirring ozone gas in a water stream will be described with reference to the drawings.

In FIG. 1, reference numeral 11 denotes a fluid mixing device, which is generally housed in a main pipe 12 having a large-diameter cylindrical portion 12a, an ejector portion 13 on the upstream side thereof, and the large-diameter cylindrical portion 12a. And a rotatable stirring rotor 14. An ozone introduction pipe 15 for introducing ozone gas is connected to the ejector section 13, and another downstream main pipe 12 b is appropriately connected to the downstream side of the main pipe 12 by a flange connection or the like.

The stirring rotor 14 is made of, for example, stainless steel.
A rotor shaft 18 integrally formed with the rotor 7 and coaxially fixed to the downstream side of the rotor section 16 is connected to a reduction gear 21 and a drive motor 22 via a seal 19 and a bearing 20. The blade 17 of the rotor 14 may be a straight blade along the fluid flow as shown in FIG.
Alternatively, as shown in FIG. 3, an inclined blade 17a inclined with respect to the fluid flow may be used, or a so-called twist blade (not shown) may be used. The inclined or twist blade has higher stirring efficiency and greater compressor effect.

Next, the operation will be described.

In FIG. 1, when a water flow conveyed by a pump (not shown) flows into the main pipe 12 as indicated by an arrow A from the left side, it is accelerated by an ejector section 13 as indicated by an arrow A 'to produce a negative pressure. Is generated. As a result, ozone gas is inhaledly introduced through the ozone introduction pipe 15 as shown by the arrow E and mixed into the water stream to form ozone bubbles. Subsequently, as shown by the arrow B, the ozone bubble-mixed water stream collides with the bottom plate portion 16a of the rotor portion 16 of the rotating stirring rotor 14, and generates a backflow as shown by the symbol B. Vortex or turbulence, where the ozone bubbles are fragmented and mixed into the water stream. In addition, many uneven | corrugated parts may be provided in the surface of the bottom plate part 16a, and this can make a water flow more turbulent, and it is preferable.

The ozone-bubbled water stream further traverses a plurality of blades 17 as indicated by arrow C. However, since these blades 17 are rotated at a predetermined rotation speed by the motor 22, the above-mentioned ozone bubble-containing water stream is dynamically and forcibly stirred, and the ozone bubbles are reduced to, for example, a diameter of about 30 microns.

Thereafter, as shown by the arrow D, the water stream containing the fine ozone bubbles flows from the subsequent pipe 12b to the gas-liquid separation layer (not shown).
However, the ozone bubbles are sufficiently miniaturized to a diameter of about 30 μm, and thus effectively adhere to organic substances mixed in water. Therefore, the organic matter is decomposed and sterilized by the ozone, and floats to the upper layer of the stored water in the separation layer due to the buoyancy of the ozone bubbles, so that it is scooped and removed. The water is thus cleaned and, if necessary, recycled.

FIG. 4 shows another embodiment of the present invention, in which the same parts as those in FIG. 1 are denoted by the same reference numerals.
The fluid mixing device 31 of the present embodiment is different from the embodiment of FIG. 1 in that an additional ejector portion 32 is provided on the downstream side of the large-diameter cylindrical portion 12a, and as shown by an arrow F via a pipe 33. ,
Further, ozone gas is introduced by suction. In this case, the ozone gas is subdivided in the ejector section 32 into about 100 microns.

Therefore, when the ozone gas having a diameter of about 30 μm that has passed through the blade portion 17 adheres to the organic matter in the gas-liquid separation layer, the ozone gas further surrounds the organic material around the gas.
Ozone gas of about 0 μm adheres to further decompose and sterilize organic substances, and further increase the floating speed to increase the overall processing speed.

Next, FIG. 5 shows still another embodiment of the present invention, in which the large-diameter cylindrical portion 12a is not merely a water stream, but is, for example, an oxidized bleaching fluid or a further diluted water for a liquid slurry. 1 and FIG. 4 are denoted by the same reference numerals in FIG. Fluid mixing device 41 of the present embodiment
Has an ejector section 32 only on the downstream side of the large-diameter cylindrical section 12a. Therefore, in this case, the mixed liquid flows into the large-diameter cylindrical portion 12a as shown by an arrow A, and a vortex is generated by the bottom plate 16a of the stirring rotor 16 and the blade 17 The mixture is dynamically stirred to become a uniform liquid mixture, and the ejector unit 3 on the further downstream side
The organic matter in the mixed liquid is decomposed, sterilized, and floated in the gas-liquid separation layer in the subsequent step by mixing the ozone gas sucked from the second step.

In each of the above embodiments, air may be used instead of ozone gas. In this case, the decomposition / sterilizing power is weaker than ozone gas, but it is safe. It performs a similar function for abilities.

In each of the above embodiments, the ozone gas may be supplied by using a compressor instead of the ejector. In particular, when the ozone gas or the like is supplied on the upstream side of the large-diameter cylindrical portion 12a. According to the ejector, a negative pressure is generated, so that the solubility of ozone gas in a water stream is increased, which is preferable.

The present invention is not limited to the above-described embodiments, but the point is that the mixed fluid flows from the main pipe 12 into the large-diameter cylindrical portion 12a and the blade 17 of the rotating stirring rotor 14 rotates. It is apparent that the present invention can be applied to any modification as long as the mixture is stirred and uniformly mixed.

For example, in the embodiment of FIG. 5, the ejector portion 32 is removed, and the mixed liquid simply flows into the large-diameter cylindrical portion 12a and is dynamically stirred by the stirring rotor 14 so that the mixed concentration is uniform. It can also be applied to cases where

That is, at least two mixed fluids are used.
A mixed fluid of two types of liquids, a mixed fluid of at least one type of liquid and at least one type of gas, or a mixed fluid of at least two types of powder (such as flour and sugar). Is also good.

The blade 17 in each of the above embodiments has a solid single plate shape, but is not limited to this.
A so-called comb shape having a plurality of cuts in a single plate may be used, or the entire single plate may be formed in a mesh shape, or a large number of substantially radial needles are implanted on the outer peripheral surface of the rotor portion 16 instead of the plate shape. The shape may be provided. According to these, the ozone gas or air can be further miniaturized and the mixed fluid can be mixed more uniformly as compared with the single plate blade.

The material of the blade 17 is not limited to stainless steel, but may be a so-called activating material such as a ceramic or a permanent magnet. According to this, a cluster of water constituting a water flow is reduced. As a result, the contact efficiency between the finely mixed gas such as ozone gas or air and the organic matter (dirt) in the water stream can be increased, and the processing capacity can be improved.

As a specific application example of the present invention, for example,
Purification of water recycled in baths, pools or aquariums where live fish are kept for 24 hours, mixing of carbon dioxide CO ₂ into raw beer water, bleaching process of adding bleaching agent in spinning or textile dyeing process, washing machine In the step of mixing air in the washing water to remove dirt in the washing water to make the detergent unnecessary, mixing carbon dioxide CO ₂ into the Ca (OH) ₂ aqueous solution to remove carbon
The present invention can be used in various processes such as a process for obtaining aCO ₃ and an air cleaning process in which air is mixed into a water stream in an air purifier to remove dust, ticks and the like in the air instead of in the water.

[0035]

As described above, the present invention has the following advantages.

Fluid from main pipe 12 and fluid introduction mechanism 1
Since the mixed fluid with the fluid from 3 or the like is dynamically and highly efficiently stirred by the rotational energy of the blade 17 of the fluid stirring body 14 that is rotationally driven, compared to a case where the stirring body is simply stationary, The stirring efficiency of the mixed fluid becomes extremely high. In this case, the fluid agitator 14 has a bottomed cylindrical shape.
This makes the mixing of the mixed fluid more uniform and the gas
The gas bubbles when used can be further subdivided.

Therefore, for example, when ozone gas or air is introduced into the water stream from the fluid introduction mechanism 13 provided on the upstream side of the main pipe 12 to form a gas-liquid mixed fluid, the gas-liquid mixed fluid is Is stirred dynamically, the gas is finely divided, and fine bubbles can efficiently adhere to the organic matter in the water stream, thereby efficiently decomposing and sterilizing the organic matter, and floating the organic matter in the gas-liquid separation layer in the subsequent process. The speed can be increased, extremely clean water can be recycled and obtained, and the processing speed is high.

Further, when an additional fluid introduction mechanism 32 is provided downstream of the main pipe 12 to introduce additional ozone gas or air, since bubbles of the additional gas wrap the fine bubbles, decomposition of organic substances is performed. -The sterilization effect is further improved, and the floating speed in the gas-liquid separation layer can be further increased.

When the blade 17 may have a straight shape but is inclined or twisted to provide an effect as a compressor, the liquid is compressed and the gas bubbles are further miniaturized by that amount to adhere to organic substances. Efficiency is improved.

The blade 17 is made of a comb plate, a mesh plate,
Or, by making the shape of a needle, the gas bubbles can be further miniaturized. In addition, by using a material for the blade 17 as an activation material such as a so-called ceramic or permanent magnet, it is possible to reduce the liquid aggregate and improve the liquid treatment efficiency.

[0041]

[0042] For the large-diameter cylindrical portion 12a of the main pipe 12
When simply introducing a premixed fluid mixture
However, the mixed fluid is dynamically
Into a uniform mixed state.

[0043] When the mixed fluid is a mixed liquid
The fluid introduction mechanism 32 is installed only on the downstream side of the main pipe 12.
Ozone gas or air
The foam wraps the organic matter in the mixed liquid, and
Can be decomposed and sterilized, and the floating speed can be increased.

[Brief description of the drawings]

FIG. 1 is a schematic cross-sectional view showing one embodiment of a mixing device for two or more fluids according to the present invention.

FIG. 2 is a perspective view of the rotor of FIG. 1;

FIG. 3 is a modified example of the rotor of FIG. 1;

FIG. 4 is a schematic sectional view showing another embodiment of the apparatus for mixing two or more fluids according to the present invention.

FIG. 5 is a schematic sectional view showing still another embodiment of the mixing device for two or more fluids according to the present invention.

FIG. 6 is a schematic sectional view of the configuration of a conventional two or more fluid mixing apparatus.

[Explanation of symbols]

1, 11, 31, 41 Fluid mixing device 2, 12 Main pipe 2a, 12a Large-diameter cylindrical part 3 Fixed collision body 4 Collision plate 5 Rib 13, 32 Ejector part 14 Stirring rotor 16 Rotor part 16a Bottom plate part 17, 17a Blade 18 rotor shaft 19 seal 20 bearing 21 reduction gear 22 motor

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. ⁷ , DB name) B01F 5/00-7/32

Claims (10)

(57) [Claims] A main pipe (12) for carrying at least one kind of fluid and having a large-diameter cylindrical portion (12a) at a predetermined position.
A fluid introduction mechanism (13, 32) provided at least upstream of the large-diameter cylindrical portion and introducing at least one other fluid into the main pipe; and a blade (17) provided on an outer periphery; A fluid agitator (1) coaxially and rotatably housed in the large-diameter cylindrical portion.
4) and a drive mechanism (21, 22) for rotationally driving the fluid stirring body.
A mixed fluid of one fluid from the inlet of the main pipe (12) and another fluid introduced from the fluid introduction mechanism (13) is mixed with the blade of the rotating fluid agitator (14). (1
7), the fluid agitator (14) is provided with a bottomed cylindrical portion (16),
The blade (17) provided on the outer periphery of the bottomed cylindrical portion is slightly reduced.
Even without comprising, like the bottom plate of the bottomed cylindrical portion (16a) arranged on the downstream side
A mixing device for two or more fluids, wherein the mixing device is disposed in the large-diameter cylindrical portion (12a) in a state . 2. A method for transporting at least one kind of one fluid.
Main pipe (12) with large-diameter tubular part (12a) in place
And at least an upstream side of the large-diameter cylindrical portion
Fluid introduction machine for introducing one type of another fluid into the main pipe
A structure (13, 32) and a blade (17) provided on the outer periphery, inside the large-diameter cylindrical portion.
Fluid agitator (1) coaxially and rotatably housed in
4) and a drive mechanism (21, 22) for rotationally driving the fluid stirring body.
Comprising the door, said as one of the fluid from the inlet of the main pipe (12) fluid guide
Fluid mixed with another fluid introduced from the inlet mechanism (13)
Is the blade (1) of the rotating fluid stirring body (14).
7) The mixing device for two or more fluids , wherein the fluid introduction mechanisms (13, 32) are provided on the upstream side and the downstream side of the large-diameter cylindrical portion, respectively. 3. The device according to claim 1, wherein the fluid introduction mechanism (13) is provided with the large-diameter cylindrical part (12).
The device described above, which is provided only on the upstream side of (a). 4. A device according to any one of claims 1 to 3, wherein the blade (17) said device characterized in that extending straight along the fluid flow direction. 5. A device according to any one of claims 1 to 3, said device the blade (17a), characterized in that the extending inclined or twisted relative to the fluid flow direction. 6. The device according to claim 4, wherein the blades (17, 17a) are in the form of a comb plate, a mesh plate, or the like.
And any one of a number of needles. 7. The device according to claim 4, wherein the blade (17, 17a) is made of stainless steel or an activated material. 8. A device according to claim 1 or 2, wherein the first fluid is a liquid or powder, and characterized in that said other fluid is either liquid, gas and powder Said device. 9. The apparatus of claim 1, the fluid introduction mechanism downstream, for introducing other fluids into the main pipe of the large-diameter cylindrical-shaped portion of the main pipe (12a) (32) The apparatus according to claim 1, further comprising: 10. The apparatus according to claim 8 , wherein the two kinds of fluids are liquids or powders, and the other fluid is a liquid or a gas.