JP2002355539A - Agitating method and agitator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the agitation performance of an agitator of such a type that a turbine is rotated in a stator. SOLUTION: Blades 2c and a turbine 2 having a turbine side porous plate 6 welded to the turbine 2 are fixed to the lower end of a rotary shaft 4, a stator 3 having a turbine chamber 3c and a stator side porous plate 7 are fixed in superimposed state to the lower end of a fixing rod 5 so that a slight gap 8 is formed between the porous plates 6 and 7. When the turbine 2 is rotated at a high speed, a liquid L to be treated is energized by the turbine 2, flows in the direction of an arrow A and blows out in the direction of an arrow B. At this time, a high degree of agitation is attained in a short time because the liquid L to be treated is first agitated by the turbine 2, then split by the porous plate 6, exposed to shear action with a high speed generated by relative rotation of the porous plates 6 and 7 in the gap 8, thereby, violently agitated, split by the porous plate 7, and mixed with the liquid to be treated in the tank, and because the agitation action is carried out circularly and agitation action caused by flowage in the tank is also generated.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a means for stirring, mixing, subdividing, emulsifying, micro-encapsulating, etc. substances which are used as materials for cosmetics, medicines, foods, chemicals and the like.

[0002]

2. Description of the Related Art As means for performing the above processing,
A device shown in FIG. 12 is known (for example, Japanese Patent No. 302846).
No. 4). In the figure, a is stirring, b is a main body, c
Denotes a stirring unit, the stirring unit c includes a stator c1 and a turbine c2, the stator c1 includes an outflow groove on an outer periphery, and is fixed to the main body unit b via a support rod d.
It is fixed to a rotating shaft g driven by a motor m and has several inclined blades. The main body part b also has a support base f,
A stirring tank 1 containing the processing liquid g is bound. Turbine c2
When the is rotated, the processing liquid g is urged by the inclined blades in the stator c1 and jets out of the outflow grooves, and is agitated by the mixing action based on the rotation of the inclined blades and the mixing action by jetting out of the outflow grooves.

In the above-mentioned stirrer, the portions acting on the processing liquid are the portion of the outflow groove of the stator c1 having a complicated structure and the outer surface of the inclined blade of the turbine c2. As shown, the stirring performance is higher than that of a stirrer having a simple flow path without an outflow groove in the stator, but the stirring performance is further increased in order to further divide the components of the processing liquid and to improve the efficiency. A high stirring means is expected.

[0004]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a stirring means for rotating a turbine in a stator, wherein the stirring means is capable of efficiently dividing the components of the processing liquid.

[0005]

Means for solving the above-mentioned problems are as follows.
As described in each claim, in the stirring method according to claim 1, the treatment liquid is urged by rotation of a turbine to sequentially pass through a plurality of ejection holes provided in a plurality of perforated plates that rotate relatively at high speed. When passing between the perforated plates, the processing liquid is at least sheared by the perforated plates to be subdivided.

According to this means, the treatment liquid is subjected to the stirring action by the turbine and the stirring action accompanying the flow in the tank as in the case of the conventional stirring method, but additionally, it passes through the first perforated plate. Upon passing through the orifices, the divided processing solution is sheared between the first and second perforated plates due to the relative motion of the two perforated plates. As a result, the liquid is again subjected to the dividing action when passing through the next perforated plate, so that the treatment liquid components are remarkably promoted.

According to a second aspect of the present invention, there is provided a stirrer in which a turbine having a plurality of blades is fixed to a rotating shaft and a stator having a turbine chamber surrounding the turbine is fixed to a stationary member. A turbine-side perforated plate penetrating through a number of ejection holes is provided integrally, and a stator-side perforated plate that has penetrated through a large number of ejection holes is fixed to a stator downstream of the turbine-side perforated plate with a small gap. It is characterized by being installed.

According to this means, the processing liquid urged by the turbine is subjected to the stirring action of the turbine and the stirring action caused by the flow in the tank. In addition to this, the processing liquid is ejected when passing through the perforated plate on the turbine side. After passing through the ejection holes, the divided processing liquid is subjected to a shearing action with the stator-side perforated plate after passing through the ejection holes, and is again divided when passing through the stator-side perforated plate. Therefore, the subdivision of the treatment liquid component is remarkably promoted.

According to a third aspect of the present invention, in the agitator, a perforated cylindrical rotor provided through a plurality of ejection holes in a cylindrical body is fixed to a rotating shaft via a radial arm, and the plurality of ejection holes penetrate another cylinder. And a perforated cylindrical stator surrounding the perimeter of the perforated cylindrical rotor through a small gap is fixedly mounted on a stationary member. According to this means, the processing liquid urged by the radial arm is subjected to a dividing action which is divided into the number of ejection holes when passing through the perforated cylindrical rotor, and a large rotational energy due to the rotation of the perforated cylindrical rotor 4 and centrifugation. Under the force, a vigorous stirring action with a shearing action occurs between the porous cylindrical rotor and the porous cylindrical stator, and further undergoes a splitting action when passing through the ejection hole of the porous cylindrical stator, so that the processing liquid component is subdivided. Is extremely large.

According to a fourth aspect of the present invention, there is provided a stirrer which fixes a turbine having a large number of inclined blades to a rotating shaft, fixes a turbine-side perforated plate downstream of the turbine in the axial direction, and fixes the turbine to a stationary member. It is characterized by providing a cylindrical portion having a large number of ejection holes and an end face portion having a large number of ejection holes adjacent to the turbine-side perforated plate. According to this means, the processing liquid urged by the turbine is subjected to a dividing action that is divided into the number of ejection holes when passing through the turbine-side perforated plate, and after passing through the ejection holes, the divided processing liquid is divided. Is subjected to a shearing action with the end face part, and is again subjected to the splitting action when passing through the end face part, so that the treatment liquid component is finely divided. Further, a part of the processing liquid urged by the turbine is spouted from a spouting hole provided in the cylindrical portion of the stator, which promotes stirring of the whole.

[0011] The stirrer according to the fifth aspect is the second aspect of the present invention.
, A large number of vertical concave grooves for promoting cavitation are arranged in the inner surface of the stator. According to this means, the processing liquid is swirled across the groove and cavitation occurs when passing through the groove,
The stirring action is increased.

[0012] The stirrer according to the sixth aspect is the second aspect, the third aspect or the fourth aspect.
, Wherein the ejection hole is a round hole having a small diameter or a long groove having a small width. In this means,
If the treatment liquid has a low viscosity, one having a round hole is used,
If the viscosity is high, a material having a long groove is used.

[0013]

Embodiments of the present invention will be described below with reference to the drawings. In FIG. 1, reference numeral 1 denotes an example of the stirrer of the present invention, reference numeral 2 denotes a turbine, reference numeral 3 denotes a stator, and turbine 2 is fixed to a rotating shaft 4 extending from a motor of the apparatus main body. Is fixed with a nut 5a to a stator fixing rod 5 extending from the stationary member.

FIG. 2 is a longitudinal sectional view and a bottom view of the turbine 2, in which six blades 2c are inserted and welded into six cutting grooves provided in a disk portion 2b integral with the boss 2a. The blade 2c has a receding angle of 25 °. A ring-shaped turbine-side perforated plate 6 is welded to the upper end of the blade 2c, that is, on the downstream side. The turbine-side perforated plate 6 is provided with a large number of small-diameter ejection holes 6a, and the disk portion 2b
It is located in the flow path outside.

FIG. 3 is a longitudinal sectional view and a plan view of the stator 3. The stator 3 includes a guide portion 3a and a disk portion 3b. A turbine chamber 3c is provided downstream of the guide portion 3a. A hole 3d is made,
The stator-side porous plate 7 is stacked on the upper end of b. The stator-side perforated plate 7 has an opening 7b at the center, and a perforated portion 7a1 having a large number of ejection holes 7a formed on the opening 7b side.
A non-porous portion 7c is formed on the outer peripheral side.

The perforated portion 7a1 has a perforated plate 6 on the turbine side.
And a mounting hole 7d corresponding to the mounting hole 3d is formed in the non-porous portion 7c. Then, as shown in FIG. 1, the stator-side perforated plate 7 is placed on the flange portion 3b of the stator 3, and the mounting holes 7d and 3d are fitted to the stator fixing rod 5 and fixed with the nut 5a. It is positioned so as to overlap with the perforated plate 6 with a slight gap 8 interposed therebetween.

The dimensions of the main parts of the above-described apparatus are as follows, for example, when the outer diameter of the turbine 2 is 100 mm and the thickness of the perforated plates 6 and 7 is 2 mm.
３3 mm, the inner diameters of the ejection holes 6 a and 7 a are 3 mm, and the gap 8 is 0.1 to 0.5 mm.
The outer diameter of the turbine 2 is set to 40 to 300 mm, and the dimensions of other parts can be appropriately changed accordingly.

The stirring tank 9 containing the processing liquid L and the stirrer 1 are combined, and the rotating shaft 4 is rotated to rotate the turbine 2 at a peripheral speed of 30 to
When the processing liquid L is rotated at a high speed of 50 m / s, the processing liquid L is sucked by the suction force of the turbine 2 as shown by an arrow A, and its flow causes a rough stirring action. When it reaches the turbine 2, it is stirred while being rotated by the high-speed rotating blades 2c,
The pressure rises due to the centrifugal force caused by the rotation, and is divided at the ejection holes 6a of the turbine-side perforated plate 6 and ejected into the gap 8, and the ejected processing liquid is separated from the rotating turbine-side perforated plate 6 and the non-rotating stator-side perforated plate. Due to the relative rotation with 7, it is subjected to shearing force and is finely divided. Furthermore, the pressure of the processing liquid filling the gap 8 causes the processing liquid L to be spouted at a high speed from the jet holes 7a of the stator-side porous plate 7 as shown by the arrow B, and also mixed with the processing liquid flowing at a low speed. A stirring action occurs.

FIG. 4 shows a stirrer 11 according to another embodiment. In this stirrer 11, a turbine 12 is provided with a cut groove in a flat disk portion 12a and a turbine blade 12 is provided.
b, and is formed by welding. A turbine-side perforated plate 13 is welded to the upper end of the blade 12b, and a bolt 14
To the rotating shaft 4.

The stator 15 has a turbine chamber 15
a, a mounting hole 15b is provided on the outer peripheral side, and the turbine chamber 15
On the inner surface of a, a large number of concave grooves 15c for promoting cavitation, which are useful for subdividing the processing liquid, are provided. Prior to the fixing of the turbine 12, a convex submerged sleeve 16 fitted to the stator side porous plate 17 is fitted to the rotating shaft 4,
The stator-side porous plate 17 and the stator 15 are fixed to the stator fixing rod 5 by nuts 15d together. The submerged sleeve 16 is for preventing a run-out of the core of the rotating shaft 4 and for maintaining a gap between the porous portions of the stator-side porous plate 17 and the turbine-side porous plate 13.

In this stirrer 11, the processing liquid is as shown in FIG.
Flows upward as in the case of the device, and is inhaled in the direction of arrow A,
It is discharged in the B direction, but cavitation is likely to occur when crossing the concave groove 15c, and this cavitation causes a stirring action, and then when passing through both perforated plates 13 and 17, the same as in the apparatus of FIG. Subject to vigorous stirring.

The concave grooves for generating cavitation are:
In other embodiments, it can be provided for each stator member.

The stirrer 20 shown in FIG.
And a stator shaft 21, which is substantially equivalent to the one in which the stator 15 and the stator 15 are installed upside down.
Is inserted into the submerged sleeve 22 pressed into the rotating shaft 4,
The center of the rotating shaft 4 is prevented from running.

FIG. 6 shows a turbine 25 different from the above-mentioned turbines 2 and 12. This turbine 25 has six trapezoidal blades 27 welded to the outer peripheral side of a flat disk 26 and a jet hole. Porous part 26a1 with many 6a opened
The center side is a non-porous portion 26b, and the center is welded to the boss 28 fitted to the rotating shaft. Since the disk and the perforated plate are one member, there is an advantage that the number of parts is small.

The stirrer 30 shown in FIGS. 7 and 8 uses a perforated cylinder instead of the perforated plate, and includes a perforated cylindrical rotor 31 connected to the rotating shaft 4 and a fixed rod 5 having a larger diameter than this. And a perforated cylindrical stator 32 fixed thereto. The perforated cylindrical rotor 31 includes the turbine 2 and the perforated plate 6 on the turbine side.
A large number of ejection holes 34 are formed in the cylindrical portion 33. The cylindrical portion 33 has a radial arm 35 and a boss 36 integrally, and the boss 36 Fixed.

On the other hand, in the porous cylindrical stator 32, a large number of ejection holes 38 are formed in the cylindrical portion 37, and three mounting pieces 39 having a mounting hole 39a are formed on the outer periphery thereof. As shown in FIG. 8, when the mounting piece 39 is fixed to the fixed rod 5 and positioned at the same height and concentric with the perforated cylindrical rotor 31, a narrow gap 30 a is formed between both perforated cylinders.

When the rotating shaft 4 is rotated at a peripheral speed of about 30 m / s by immersing the stirring device 30 in the processing solution in the stirring tank, the processing solution in the porous cylindrical rotor 31 The liquid is sucked from above and below in the direction of arrow A, rotates along with the perforated cylindrical rotor 31, and enters the ejection hole 34 of the perforated cylindrical rotor 31 by centrifugal force. Is received, is divided into gaps 30a, and is jetted. Further, the porous cylindrical rotor 31 and the non-rotating porous cylindrical stator 32 are agitated while being subdivided by shearing force between the rotating porous cylindrical rotor 31 and the non-rotating porous cylindrical stator 32. The liquid is divided at the thirty-two jet holes 38 and jetted into the processing liquid in the stirring tank in the direction of arrow B to be stirred. This stirrer 3
In the case of 0, the rotational force and the centrifugal force acting on the processing liquid are uniform in each part, so that the stirring is also performed in each part.

The stirrer 40 shown in FIG. 9 is obtained by changing a part of the stirrer 30 shown in FIG. 8, and has a plurality of narrow ejection grooves 42 penetrated in place of the ejection holes 38 of the perforated cylindrical stator 32. The multi-groove cylindrical stator 41 is provided. This stirrer 4
In the case of 0, since the total area of the ejection groove 42 is large, it is suitable for a high-viscosity processing liquid.

The ejection holes in the porous cylindrical rotor 31 in FIG. 9 can be formed as long grooves, and the ejection holes shown in FIGS. 1 to 6 can also be formed as long grooves. When the processing liquid has a high viscosity, a long groove is preferable.

The stirrer 50 shown in FIGS. 10 and 11 includes a turbine 51 having a large number of helical blades and a stator 52 having ejection holes on the end face and the outer peripheral face. Is welded with a perforated plate 53 having a large number of ejection holes. The stator 52 includes a cylindrical portion 54 and an end plate portion 55. The cylindrical portion 54 has a large number of small ejection holes 56, and the end plate portion 55 has long ejection holes so that the distribution of the opening area is averaged. Grooves 57 and short ejection grooves 58 are opened alternately.

The processing liquid sucked in the direction of arrow A by the rotation of the turbine 51 is ejected from the ejection grooves 57 and 48 in the direction of arrow B1 and ejected from the ejection hole 56 in the direction of arrow B2. The amount is set to be larger than the ejection amount in the arrow B2 direction. The processing liquid discharged in the direction of the arrow B1 receives the shearing force between the perforated plate 53 and the end plate portion 55 and is fragmented. The processing liquid discharged in the direction of the arrow B2 passes through the small ejection hole 56. It is subdivided and agitator 5
Increases the fluid mixing effect of the processing liquid rising outside zero.

In each of the above embodiments, it is desirable that the peripheral speed of the turbine or the perforated cylindrical rotor is as high as possible.

[0033]

According to the first aspect of the present invention, the processing liquid is successively passed through the ejection holes of the plurality of perforated plates that rotate relative to each other via the turbine, so that the processing liquid is agitated by the flow in the turbine and the tank. In addition, since the processing liquid is subjected to the dividing action by the ejection holes of the perforated plate and the vigorous stirring action involving the shearing action between the plurality of relatively rotating perforated plates, the processing liquid has an effect of being fragmented in a short time.

According to the second aspect of the present invention, the processing liquid is caused to pass through the ejection holes of the turbine-side perforated plate and the stator-side perforated plate that rotate relative to each other, so that the processing liquid can be used in addition to the stirring action by the flow in the turbine and the tank. In addition, since the splitting action by the ejection holes of the two perforated plates and the vigorous stirring action accompanied by the shearing action between the two rotatable perforated plates are subjected to the vigorous stirring action, the treatment liquid is subdivided in a short time. Has an effect.

According to the third aspect of the present invention, the perforated cylindrical rotor acts as a turbine and a cylindrical perforated plate, and the processing liquid is subjected to a dividing action by the ejection holes of the two perforated cylinders and a stirring action by the flow in the tank. On the upper side, large rotational energy is given by the arm of the porous cylindrical rotor, the inner and outer peripheral surfaces of the cylindrical portion, and the inside of the ejection hole, and a large centrifugal force is generated. The liquid has an effect of being fragmented in a short time by vigorous stirring.

According to the fourth aspect of the present invention, a part of the processing liquid is ejected from the cylindrical portion while the processing liquid is divided by the relative rotation of the perforated plate at the end face of the stator, so that the whole stirring is promoted. Has an effect.

According to the fifth aspect of the present invention, the processing liquid is swirled across the groove, and when passing through the groove, cavitation occurs and the stirring action is increased.

According to the sixth aspect of the present invention, the small round jet hole is suitable for a low-viscosity processing liquid, and the long groove jet hole having a small outflow resistance is suitable for a high-viscosity processing liquid.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view of a first embodiment of the present invention.

FIG. 2 is a longitudinal sectional view and a bottom view of the turbine of the same embodiment.

FIG. 3 is a vertical sectional view and a plan view of a stator of the same embodiment.

FIG. 4 is a longitudinal sectional view of a second embodiment.

FIG. 5 is a longitudinal sectional view of a third embodiment.

FIG. 6 is a perspective view showing an example of a turbine-side perforated plate.

FIG. 7 is an exploded perspective view of the fourth embodiment.

FIG. 8 is an assembled perspective view of the same embodiment.

FIG. 9 is an assembled perspective view of a fifth embodiment.

FIG. 10 is a longitudinal sectional view of a sixth embodiment.

FIG. 11 is a perspective view of the same embodiment.

FIG. 12 is an explanatory diagram of a conventional technique.

[Explanation of symbols]

1, 11, 20, 30, 40, 50 Stirrer 2
Turbine 3 Stator 4 Rotating shaft 5 Fixed rod 6 Turbine-side perforated plate 7 Stator-side perforated plate
8 gap 9 09 31 perforated cylindrical rotor 32
Perforated cylindrical stator

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 4G035 AB38 AB40 4G078 AA04 AA13 AB09 AB11 BA05 CA07 DA21 DC02

Claims (6)

[Claims] 1. A processing liquid is urged by rotation of a turbine to sequentially pass through a plurality of ejection holes provided in a plurality of perforated plates which rotate relatively at a high speed. A stirring method, wherein at least a shearing action is caused on the fine particles. 2. A stirrer in which a turbine having a plurality of blades is fixed to a rotating shaft, and a stator having a turbine chamber surrounding the turbine is fixed to a stationary member. The turbine-side perforated plate is provided integrally, and a stator-side perforated plate that has penetrated through a large number of ejection holes is fixedly installed on the downstream side of the turbine-side perforated plate through a small gap. Stirrer. 3. A perforated cylindrical rotor provided through a plurality of ejection holes in a cylindrical body, fixed to a rotating shaft via a radial arm, provided with a plurality of ejection holes through another cylinder, and A stirrer characterized in that a perforated cylindrical stator that surrounds the outer periphery of a perforated cylindrical rotor with a small gap fixed to an immovable member. 4. A turbine having a large number of inclined blades fixed to a rotating shaft, a turbine-side perforated plate fixed to an axially downstream side of the turbine, and a plurality of ejection holes surrounding the turbine are fixed to a stator fixed to a stationary member. A stirrer comprising: a cylindrical portion having an opening; and an end portion having a large number of ejection holes proximate to a turbine-side perforated plate. 5. The stirrer according to claim 2, wherein a plurality of longitudinal grooves for promoting cavitation are provided in the inner surface of the stator. 6. The stirrer according to claim 2, wherein the ejection hole is a round hole having a small diameter or a long groove having a small width.