JP6687422B2 - Distributed system - Google Patents

Description

  The present invention is provided with a centrifugal suction pump mechanism part, and a mixed fluid of a dispersoid and a liquid phase dispersion medium is passed through the suction pump mechanism part to generate a sol in which the dispersoid is dispersed in the liquid phase dispersion medium. Regarding the system.

A slurry (an example of a sol) in which a solid phase dispersoid (an example of a dispersoid) is dispersed in a liquid phase dispersion medium is an electrode or separator for a lithium ion secondary battery or an electric double layer capacitor, a paint, a toner, or a polishing material. It is often used for applications such as agents. On the other hand, an emulsion (an example of a sol) obtained by dispersing a liquid-phase dispersoid (an example of a dispersoid) in a liquid-phase dispersion medium is used for foods, sheet materials, emulsion fuels, and the like.
In such a sol, insufficient dispersion of the dispersoid in the liquid dispersion medium may lead to a decrease in performance thereof, and particularly when used as a secondary battery electrode, a decrease in cycle characteristics. Leads to.
Incidentally, examples of the liquid phase dispersion medium include a solvent such as water, and examples of the dispersoid include a solid phase dispersoid such as powder and a liquid phase dispersoid such as oil.
Note that the powder is not particularly excluded as long as it is a powder, for example, chemical raw materials such as battery electrode material, food raw materials such as skim milk powder and wheat flour, pharmaceutical raw materials, etc., granules, powder Examples thereof include powders such as bodies and fine particles (including a mixture of these powders). The powder includes a granular material.

  Conventionally, as a dispersion system for generating a sol (dispersion liquid) in which a dispersoid is dispersed in a liquid phase dispersion medium, an introduction chamber to which a fluid is supplied and a plurality of throttle through holes arranged on the outer peripheral side of the introduction chamber are provided. Cylindrical stators arranged side by side in the direction, an annular blade chamber communicating with the discharge portion formed on the outer peripheral side of the stator, and a rotating blade that can be rotationally driven in the blade chamber are arranged in the main body casing, and the rotating blade is arranged. It is known that a centrifugal suction pump mechanism that sucks fluid from the introduction chamber to the blade chamber through the throttle through hole and discharges the fluid from the blade chamber to the discharge portion by rotational driving of References 1 to 4).

In this type of dispersion system, the mixed fluid of the liquid phase dispersion medium and the dispersoid is supplied to the introduction chamber to drive the rotating blades to rotate, and the mixed fluid is passed through the suction pump mechanism to form a mixed fluid. On the other hand, shearing force and impact force are applied by the rotor blades, and the agglomerates (so-called lumps) of dispersoids contained in the mixed fluid are appropriately crushed. Therefore, disperse the dispersoids appropriately in the liquid phase dispersion medium. Is said to be possible.
In addition, in this type of dispersion system, a sudden pressure drop occurs at the back surface of the rotary blade that is rotationally driven at high speed in the blade chamber, so the mixed fluid existing near the back surface of the rotary blade passes through the throttle through hole. The local boiling (cavitation) is caused, and the impact caused by the disappearance of the bubbles contained in this mixed fluid satisfactorily disintegrates the dispersoid agglomerates (damage) and disperses the dispersoid in the liquid dispersion medium. It is said that it can be promoted.

  Particularly, in the dispersion system of Patent Document 4, a throttle portion is provided at the inlet of the introduction chamber, and a throttle through hole of the stator is provided on the downstream side (outer peripheral side) of the introduction chamber to appropriately set the rotational speed of the rotary blade. Thereby, fine bubbles are generated by vaporization of the liquid dispersion medium over the entire circumference of the blade chamber. This is said to further promote dispersion of the dispersoid.

JP, 2007-216172, A JP, 2006-281017, A International Publication No. 2010/140516 JP2012-250145A

  However, since the dispersion system in which the dispersoid is dispersed in the liquid phase dispersion medium to generate the sol is used in many applications as described above, it is necessary to further improve the quality of the sol to be generated, and the sol in the dispersion system. There is an ongoing need to further increase the production efficiency of.

  The present invention has been made in view of the above circumstances, and an object thereof is to provide a dispersion system capable of producing a high-quality sol with high efficiency.

A distributed system according to the present invention for achieving the above object,
A dispersion system comprising a suction pump mechanism section, which allows a mixed fluid of a dispersoid and a liquid phase dispersion medium to pass through the suction pump mechanism section,
The suction pump mechanism section,
The wing chamber,
A discharge port formed on the outer wall portion of the blade chamber, the discharge port including an opening connected to a discharge flow path through which the mixed fluid is discharged,
It has a plurality of rotary blades that are driven to rotate about a predetermined rotation axis and move inside the blade chamber,
The movement in the interior of the wing chambers of said plurality of rotating blades, the fluid space when the plurality of the plurality of fluid space defined by the rotating blades and the outer wall portion is rotated and moved, in communication with the discharge port To discharge the mixed fluid from the discharge port,
In the view of the direction in which the predetermined rotation axis extends, the opening of the outer wall portion of the blade chamber that is the discharge port that connects the blade chamber and the discharge flow path is at least downstream with respect to the rotation direction of the plurality of rotary blades. The point is that the part is chamfered .

If the portion of the outer wall of the blade chamber on the downstream side of the opening is not chamfered and is sharp, a sharp portion exists in the region from the fluid space to the discharge flow path. Then, the streamline of the mixed fluid from the fluid space to the discharge channel is disturbed, and the flow velocity is reduced. According to the above characteristic configuration, the chamfering is applied to the downstream side portion of the opening of the outer wall portion of the blade chamber, so that the disturbance of the streamline of the mixed fluid is suppressed, and the flow of the mixed fluid from the fluid space to the discharge channel is suppressed. The inflow becomes smoother. This increases the flow velocity of the mixed fluid, so that fine bubbles can be generated more efficiently, and the quality of the generated sol can be further improved.

A further characteristic configuration of the dispersion system according to the present invention is that the control unit that controls the operation of the suction pump mechanism unit determines the pressure of the mixed fluid in the discharge channel when the fluid space communicates with the discharge channel. The number of rotations of the plurality of rotor blades is set so as to be equal to or lower than the saturated vapor pressure of the liquid phase dispersion medium .

The inventors changed their viewpoint from the prior art and focused on a discharge flow channel that was treated only as a mere outlet for the generated sol. Then, the present invention has been found by finding that the pressure of the mixed fluid is increased in the rotating fluid space, the flow velocity of the mixed fluid is increased when the fluid space communicates with the discharge port, and the pressure of the mixed fluid is rapidly decreased. Completed
That is, according to the above-mentioned characteristic configuration, the fluid space is rotationally moved to suck the mixed fluid, and the suction force and the centrifugal force increase the pressure inside the fluid space. Then, since the mixed fluid is discharged when the circulation space communicates with the discharge port, the mixed fluid flows into the discharge port at a high flow rate all at once, and the pressure of the mixed fluid decreases. Here, the control unit sets the rotation speed of the rotating blade so that the pressure of the mixed fluid at that time becomes equal to or lower than the saturated vapor pressure of the liquid phase dispersion medium, and rotates the rotating blade at the rotation speed. At least the region immediately after passing through the discharge port is formed as a fine bubble region in which a large number of fine bubbles of the liquid phase dispersion medium are generated. As a result, in the discharge flow channel, the liquid phase dispersion medium that has penetrated into the dispersoid agglomerates is foamed to promote the disintegration of the agglomerates, and the dispersion of the dispersion medium in the liquid phase dispersion medium is good and high. A quality sol (dispersion) can be produced.

  This point will be described with reference to FIGS. 11 and 12. These figures show a state in which the main body casing is made of transparent resin, water as a fluid is passed through the suction pump mechanism portion, and the discharge passage (12a) and the discharge port (12b) are observed. The number of rotations of the rotary blade was gradually increased, and the state of bubbles generated by reduced pressure boiling in the discharge flow channel was confirmed. At lower rotation speeds than in the state of FIG. 11, no bubbles were observed, but at the rotation speed of FIG. 11, fine bubbles were generated in the area immediately after passing through the discharge port and looked like white mist. ing. In the state of FIG. 12 in which the number of rotations is further increased, the white mist is thick and wide, more bubbles are generated, and the fine bubble region is enlarged. This is because the pressure of the mixed fluid when the fluid space (S) communicates with the discharge flow path (12a) decreases as the number of rotations of the rotor blades increases, and the saturated vapor pressure of water (at 25 ° C. 3.169 kPa), indicating that reduced pressure boiling has occurred. In this way, the inventors focused on the mixing in the discharge flow channel, which has not been considered in the past, and set the rotation speed of the rotor so that the pressure of the mixed fluid was equal to or lower than the saturated vapor pressure of the liquid phase dispersion medium. By rotating the rotary blades at that speed, it is found that the region immediately after passing at least the discharge port in the discharge channel is formed as a fine bubble region in which a large number of fine bubbles of the liquid phase dispersion medium are generated, The present invention has been completed.

A further characteristic configuration of the dispersion system according to the present invention is that the chamfer provided on the opening of the outer wall portion is an R chamfer having a radius of 2 mm or more.

  According to the above characteristic configuration, the chamfering with a radius of 2 mm or more further facilitates smooth inflow of the mixed fluid from the fluid space into the discharge flow path, thereby enabling more efficient generation of fine bubbles. It is possible to further improve the quality of the generated sol.

A further characteristic configuration of the dispersion system according to the present invention is that each of the plurality of rotor blades has a plurality of rotor blades as it extends toward an outer wall portion of the blade chamber in a direction view in which the predetermined rotation axis extends. Is provided so as to incline from the downstream side to the upstream side with respect to the rotation direction, and a chamfer is provided on the upstream side with respect to the rotation direction among the end portions on the outer wall portion side of the plurality of rotor blades. It is on the point.
If chamfering is not performed on the upstream side of the end portion of the rotary blade on the outer wall side with respect to the rotation direction and the point is sharp, a sharp portion exists in the region from the fluid space to the discharge flow path. Then, the streamline of the mixed fluid from the fluid space to the discharge channel is disturbed, and the flow velocity is reduced. According to the above-mentioned characteristic configuration, the chamfering is performed on the upstream side with respect to the rotation direction of the end portion on the outer wall side of the rotary blade, so that the disturbance of the streamlines of the mixed fluid is suppressed and the fluid is discharged from the fluid space. The flow of the mixed fluid into the flow path becomes smoother. This increases the flow velocity of the mixed fluid, so that fine bubbles can be generated more efficiently, and the quality of the generated sol can be further improved.

A distributed system according to the present invention for achieving the above object,
A dispersion system comprising a suction pump mechanism section, which allows a mixed fluid of a dispersoid and a liquid phase dispersion medium to pass through the suction pump mechanism section,
The suction pump mechanism section,
The wing chamber,
A discharge port formed on the outer wall portion of the blade chamber, the discharge port including an opening connected to a discharge flow path through which the mixed fluid is discharged,
It has a plurality of rotary blades that are driven to rotate about a predetermined rotation axis and move inside the blade chamber,
The movement in the interior of the wing chambers of said plurality of rotating blades, the fluid space when the plurality of the plurality of fluid space defined by the rotating blades and the outer wall portion is rotated and moved, in communication with the discharge port To discharge the mixed fluid from the discharge port,
Each of the plurality of rotor blades extends from the downstream side to the upstream side with respect to the rotation direction of the plurality of rotor blades as it extends toward the outer wall portion of the blade chamber when viewed in the direction in which the predetermined rotation axis extends. It is provided so as to be inclined and the chamfer is provided on the upstream side in the rotation direction among the end portions on the outer wall side of the plurality of rotor blades .

If chamfering is not performed on the upstream side of the end portion of the rotary blade on the outer wall side with respect to the rotation direction and the point is sharp, a sharp portion exists in the region from the fluid space to the discharge flow path. Then, the streamline of the mixed fluid from the fluid space to the discharge channel is disturbed, and the flow velocity is reduced. According to the above-mentioned characteristic configuration, the chamfering is performed on the upstream side with respect to the rotation direction of the end portion on the outer wall side of the rotary blade, so that the disturbance of the streamlines of the mixed fluid is suppressed and the fluid is discharged from the fluid space. The flow of the mixed fluid into the flow path becomes smoother. This increases the flow velocity of the mixed fluid, so that fine bubbles can be generated more efficiently, and the quality of the generated sol can be further improved.

A further characteristic configuration of the dispersion system according to the present invention is that the control unit that controls the operation of the suction pump mechanism unit determines the pressure of the mixed fluid in the discharge channel when the fluid space communicates with the discharge channel. The number of rotations of the plurality of rotor blades is set so as to be equal to or lower than the saturated vapor pressure of the liquid phase dispersion medium .

  According to the above-mentioned characteristic configuration, the fluid space is rotationally moved to suck the mixed fluid, and the suction force and the centrifugal force increase the pressure inside the fluid space. Then, since the mixed fluid is discharged when the circulation space communicates with the discharge port, the mixed fluid flows into the discharge port at a high flow rate all at once, and the pressure of the mixed fluid decreases. Here, the control unit sets the rotation speed of the rotating blade so that the pressure of the mixed fluid at that time becomes equal to or lower than the saturated vapor pressure of the liquid phase dispersion medium, and rotates the rotating blade at the rotation speed. At least the region immediately after passing through the discharge port is formed as a fine bubble region in which a large number of fine bubbles of the liquid phase dispersion medium are generated. As a result, in the discharge flow channel, the liquid phase dispersion medium that has penetrated into the dispersoid agglomerates is foamed to promote the disintegration of the agglomerates, and the dispersion of the dispersion medium in the liquid phase dispersion medium is good and high. A quality sol (dispersion) can be produced.

A further characteristic configuration of the dispersion system according to the present invention is that the chamfers applied to the plurality of rotor blades are R chamfers having a radius of 2 mm or more.

  According to the above characteristic configuration, the chamfering with a radius of 2 mm or more further facilitates smooth inflow of the mixed fluid from the fluid space into the discharge flow path, thereby enabling more efficient generation of fine bubbles. It is possible to further improve the quality of the generated sol.

  A further characteristic configuration of the dispersion system according to the present invention is that the discharge flow path extends along a tangential direction of the outer wall portion having a cylindrical shape.

  According to the above characteristic configuration, the discharge flow passage extends along the tangential direction of the outer wall portion, which is the moving direction of the fluid space, so that the flow of the mixed fluid from the fluid space into the discharge flow passage becomes smoother. This increases the flow velocity of the mixed fluid, so that fine bubbles can be generated more efficiently, and the quality of the generated sol can be further improved.

A further characteristic configuration of the dispersion system according to the present invention is that each of the plurality of rotor blades has a plurality of rotor blades as it extends toward an outer wall portion of the blade chamber in a direction view in which the predetermined rotation axis extends. It provided so as to be inclined toward the upstream side from the downstream side in the rotation direction of the inclination angle and the plurality of rotor blades of the plurality of rotor blades is inclined him to toward the outer wall of the blade chamber angle between the moving direction of lies in at 10 ° or more than 80 °.
According to the above characteristic configuration, the rotary blade is provided to be inclined with respect to the rotation direction, and the angle formed between the inclination angle of the rotary blade and the moving direction of the rotary blade is inclined toward the outer wall portion of the blade chamber. Since the angle is 10 ° or more and 80 ° or less, the mixed fluid can be smoothly discharged from the fluid space to the discharge passage while securing the suction force of the mixed fluid to the fluid space. Therefore, fine bubbles can be generated more efficiently, and the quality of the generated sol can be further improved.

A further characteristic configuration of the dispersion system according to the present invention is that each of the plurality of rotor blades has a plurality of rotor blades as it extends toward an outer wall portion of the blade chamber in a direction view in which the predetermined rotation axis extends. Is provided so as to incline from the downstream side to the upstream side with respect to the rotation direction of the rotary blades , and the rotary blades are inclined toward the outer wall portions of the plurality of blade chambers, and the plurality of rotary blades. angle between the moving direction lies in at most 31 ° greater than 0 ° to.
The inventors conducted an experiment to find out the optimum value of the angle of the rotor blade, and found that the angle formed by the inclination angle of the rotor blade toward the outer wall of the blade chamber and the moving direction of the rotor blade was larger than 0 °. It has been found that the case of 31 ° or less is suitable. Within this angle range, the pressure of the mixed fluid in the space from the introduction chamber to the fluid space is lowered to facilitate depressurized boiling, and at the same time, it is possible to suppress a decrease in the suction / discharge capability of the suction pump mechanism section. It is possible and preferable.

A further characteristic configuration of the distributed system according to the present invention is
A front wall portion fixed to the suction pump mechanism portion and a rotor rotatably driven about the predetermined rotation axis by a motor are provided in order along the extending direction of the predetermined rotation axis. The introduction chamber to which the mixed fluid is supplied is formed between the front wall portion and the rotor,
Wherein the plurality of rotor blades is arranged on the outer periphery of the rotor,
The front wall portion has a first facing surface that is a smooth flat surface that is orthogonal to the predetermined rotation axis of the rotor and faces the rotor,
The rotor, perpendicular to the predetermined axis of rotation of the rotor, and have a second opposing face is a smooth plane opposing the first opposing face,
Space between the first opposing face and the second opposing face is that that form part of the inlet chamber.

  According to the above characteristic configuration, the introduction chamber is formed between the front wall portion and the rotor and is sandwiched between the first facing surface and the second facing surface, which are smooth flat surfaces. The flow of the mixed fluid in the chamber becomes smoother. This increases the flow velocity of the mixed fluid, so that fine bubbles can be generated more efficiently, and the quality of the generated sol can be further improved.

Schematic configuration diagram of a dispersion system including a centrifugal suction pump mechanism Longitudinal sectional view showing the main part of the constant quantity supply device Sectional drawing in the III-III direction view of FIG. Vertical side view of centrifugal suction pump mechanism Sectional view in the VV direction of FIG. Exploded perspective view showing the assembly structure of the front wall portion of the main body casing, the stator, the partition plate and the rotor Schematic diagram of partition plate Photograph of the inside of the blade chamber where the rotor blades rotate, observed from the front side of the main body casing Photograph of the inside of the blade chamber where the rotor blades rotate, observed from the front side of the main body casing Sectional drawing of the suction pump mechanism part concerning 2nd Embodiment from the same viewpoint as FIG. Photograph of the inside of the blade chamber where the rotor blades rotate, observed from the front side of the main body casing Photograph of the inside of the blade chamber where the rotor blades rotate, observed from the front side of the main body casing Simulation result of mixed fluid flow velocity Simulation result of mixed fluid flow velocity Vertical side view of centrifugal suction pump mechanism Simulation results of mixed fluid pressure

<First Embodiment>
Hereinafter, the distributed system according to the first embodiment will be described with reference to the drawings.
FIG. 1 shows a dispersion system 100 including a centrifugal suction pump mechanism unit Y according to the present invention. This dispersion system 100 uses powder P as a dispersoid and solvent R as a liquid phase dispersion medium to dissolve powder P in solvent R to generate slurry F as a sol.
In the present embodiment, for example, CMC (carboxyl methyl cellulose) was used as the powder P (solid phase dispersoid), and water was used as the solvent R (liquid phase dispersion medium).

  As shown in FIG. 1, the dispersion system 100 includes a quantitative supply device X for quantitatively supplying the powder P, a solvent supply unit 50 for quantitatively supplying the solvent R, and a powder P quantitatively supplied from the quantitative supply device X. A suction pump mechanism unit Y that sucks and mixes a solvent R that is quantitatively supplied from the solvent supply unit 50 by negative pressure, and a powder P that is not completely dissolved from a slurry F discharged from the suction pump mechanism unit Y. The solvent R (hereinafter, undissolved slurry Fr) containing is circulatingly supplied to the suction pump mechanism unit Y, and the like, and the like.

[Quantitative supply device]
As shown in FIG. 1, the quantitative supply device X includes a hopper 31 for discharging the powder P received from the upper opening 31a through the lower opening 31b, and a stirring mechanism 32 for stirring the powder P in the hopper 31. With the upper opening 31a of the hopper 31 open to the atmosphere, a negative pressure suction force acting on the lower opening 31b by suction of the suction pump mechanism Y connected to the downstream side of the lower opening 31b causes the lower opening to open. The volumetric fixed amount supply part 40 which supplies a fixed amount of the powder P discharged from 31b to the suction pump mechanism part Y is comprised.

  The hopper 31 is formed in an inverted conical shape whose diameter decreases from the upper part toward the lower part, and the hopper 31 is arranged such that its central axis A1 is along the vertical direction. Each of the upper opening portion 31a and the lower opening portion 31b of the hopper 31 has a circular cross-sectional shape centered on the central axis A1 in the vertical direction of FIG. The inclination angle of the wall surface is about 60 degrees with respect to the horizontal plane.

  The stirring mechanism 32 is provided in the hopper 31, and a stirring blade 32A that stirs the powder P in the hopper 31, and a blade driving motor M1 that rotates the stirring blade 32A about the central axis A1 of the hopper 31. The blade drive motor M1 is provided with a mounting member 32B that is located above and supports the upper opening 31a of the hopper 31, and a transmission member 32C that transmits the rotational drive force of the blade drive motor M1 to the stirring blade 32A. .

  The stirring blade 32A is configured by bending a rod-shaped member into a substantially V shape, one side of which is along the inner wall surface of the hopper 31, and the other side of which is the central axis A1 of the hopper 31. It is coaxially and rotatably supported. Further, the stirring blade 32A has a triangular cross-sectional shape, and is arranged such that the surface forming one side of the triangle is substantially parallel to the inner wall surface of the hopper 31. Thus, the stirring blade 32A is arranged rotatably around the central axis A1 along the inner wall surface of the hopper 31.

As shown in FIGS. 1 to 3, the positive-displacement fixed-quantity supply unit 40 supplies a predetermined amount of the powder P supplied from the lower opening 31b of the hopper 31 to the downstream suction pump mechanism Y by a predetermined amount. Is.
Specifically, the introduction part 41 connected to the lower opening 31b of the hopper 31, a casing 43 having a supply port 43a and a discharge port 43b, and a weighing rotating body 44 rotatably arranged in the casing 43. And a measuring rotary body drive motor M2 that rotationally drives the measuring rotary body 44.

  The introduction part 41 is formed in a cylindrical shape that communicates the lower opening 31b of the hopper 31 and a supply port 43a formed in the upper part of the casing 43, and has a slit having the same shape as the supply port 43a of the casing 43 at the lowermost end. -Shaped openings are formed. The introduction portion 41 is formed in a tapered shape that becomes thinner toward the supply port 43a side of the casing 43. The shape of the slit-shaped opening can be appropriately set according to the size of the hopper 31, the supply amount of the powder P, the characteristics of the powder P, and the like. The dimension is set to about 20 to 100 mm, and the dimension in the width direction is set to about 1 to 5 mm.

The casing 43 is formed in a substantially rectangular parallelepiped shape, and is connected to the hopper 31 via the introduction portion 41 in a posture inclined by 45 degrees with respect to the horizontal direction (the left-right direction in FIG. 1).
As shown in FIGS. 2 and 3, a slit-shaped supply port 43a corresponding to the slit-shaped opening of the introduction portion 41 is provided on the upper surface of the casing 43, and the powder P from the lower opening 31b of the hopper 31 is provided. Can be supplied into the casing 43. At the lower part of the lower side surface (right side surface in FIG. 2) of the casing 43 arranged in an inclined shape, the powder P, which is quantitatively supplied by the measuring rotary body 44, is passed through the expansion chamber 47 and the suction pump on the downstream side. A discharge port 43b for discharging to the mechanical section Y is provided, and a powder discharge pipe 45 is connected to the discharge port 43b. The expansion chamber 47 is provided at a position inside the casing 43 where the powder P supplied from the supply port 43a to the powder storage chamber 44b of the measuring rotary member 44 is supplied in a fixed amount, and the negative pressure suction acting from the discharge port 43b is provided. The pressure keeps the pressure lower than that of the supply port 43a (for example, about −0, 06 MPa). That is, the discharge port 43b is connected to the primary side of the suction pump mechanism section Y so that the negative pressure suction force acts on the expansion chamber 47 and is maintained at a lower pressure state than the supply port 43b. With the rotation of the metering rotator 44, the state of each powder storage chamber 44b is configured to change to a negative pressure state (for example, about −0, 06 MPa) and a higher pressure state than the negative pressure state. .

  The measuring rotator 44 has a disk member 49 arranged on the drive shaft 48 of the measuring rotator drive motor M2, and has a plurality of (for example, eight) plate-shaped partition walls 44a radially except for the central part of the disk member 49. It is configured to be attached at intervals, and is configured to form a plurality of (for example, eight) powder storage chambers 44b at equal intervals in the circumferential direction. The powder storage chamber 44b is configured to open on the outer peripheral surface and the central portion of the measuring rotary body 44. An opening closing member 42 is eccentrically distributed in the circumferential direction at the center of the measuring rotary member 44 and is fixedly arranged to close or open the central opening of each powder accommodating chamber 44b depending on the rotation phase. It is configured to be possible. The supply amount of the powder P can be adjusted by changing the number of rotations of the measuring rotary body 44 by the measuring rotary body drive motor M2 that rotationally drives the measuring rotary body 44.

  As the metering rotator 44 rotates, each powder storage chamber 44b is opened to the expansion chamber 47, the expansion chamber is open, the expansion chamber 47 and the supply port 43a are not in communication with each other, and the supply port 43a is opened. The state is repeatedly changed in the order of the open supply port state and the second closed state that does not communicate with the supply port 43a and the expansion chamber 47. The casing 43 is formed so that the opening on the outer peripheral surface side of the weighing rotary body 44 is closed in the first sealed state and the second sealed state, and the opening on the center side of the weighing rotary body 44 is sealed first. The opening closing member 42 is fixedly arranged in the casing 43 so as to be closed in the state, the supply port opened state, and the second closed state.

  Therefore, in the constant quantity supply device X, the powder P stored in the hopper 31 is supplied to the constant quantity supply part 40 while being stirred by the stirring blade 32A, and the constant quantity supply part 40 causes the powder P to be discharged from the discharge port 43b. A fixed amount is supplied to the suction pump mechanism section Y through the body discharge pipe 45.

  More specifically, the pressure of the expansion chamber 47 in the casing 43 is in a negative pressure state (for example, due to the negative pressure suction force from the suction pump mechanism unit Y connected to the downstream side of the discharge port 43b of the fixed quantity supply unit 40). It becomes about −0, 06 MPa). On the other hand, since the upper opening 31a of the hopper 31 is open to the atmosphere, the inside of the hopper 31 is in a state of atmospheric pressure. The inside of the introduction part 41 communicating with the expansion chamber 47 and the metering rotary body 44 through the gap and the vicinity of the lower opening 31b are in a pressure state between the negative pressure state and the atmospheric pressure state.

  In this state, the powder P in the vicinity of the inner wall surface of the hopper 31 and the lower opening 31b is stirred by the stirring blade 32A of the stirring mechanism 32, and the powder P in the hopper 31 is sheared by the stirring blade 32A. On the other hand, the metering rotator 44 is rotated by the metering rotator drive motor M2, so that the empty powder storage chambers 44b are in communication with the supply port 43a one after another. Then, the powder P in the hopper 31 is stored in a predetermined amount in the powder storage chamber 44b of the measuring rotary member 44, which flows down the introduction portion 41 from the lower opening 31b and is in communication with the supply port 43a one after another. The powder P stored in the powder storage chamber 44b flows down into the expansion chamber 47 and is discharged from the discharge port 43b. Therefore, the powder P can be continuously supplied to the supply port 11 of the suction pump mechanism section Y by a predetermined amount through the powder discharge pipe 45 by the fixed amount supply device X.

  As shown in FIG. 1, the powder discharge pipe 45 is provided with a shutter valve 46 that can stop the supply of the powder P to the supply port 11 of the suction pump mechanism unit Y.

[Solvent supply section]
As shown in FIG. 1, the solvent supply unit 50 is configured to continuously supply the solvent R from the solvent source 51 to the supply port 11 of the suction pump mechanism unit Y at a set flow rate.
Specifically, the solvent supply unit 50 includes a solvent source 51 for sending out the solvent R, a solvent supply pipe 52 for sending out the solvent R from the solvent source 51, and a solvent for sending out from the solvent source 51 to the solvent supply pipe 52. A flow rate adjusting valve (not shown) that adjusts the flow rate of R to a set flow rate, and the solvent R adjusted to the set flow rate is mixed with the powder P that is quantitatively supplied from the constant volume supply unit 40 and is supplied to the supply port 11. And a mixing mechanism 60.

As shown in FIG. 4, the mixing mechanism 60 is configured to include a mixing member 61 that connects the powder discharge pipe 45 and the solvent supply pipe 52 to the supply port 11.
The mixing member 61 has a diameter smaller than that of the cylindrical supply port 11, and a cylindrical portion 62 is inserted in the supply port 11 so as to form an annular slit 63 with the supply port 11. In addition, an annular flow passage forming portion 65 that forms an annular flow passage 64 in the outer peripheral portion of the supply port 11 in a state of communicating with the annular slit 63 over the entire circumference is configured.
The powder discharge pipe 45 is connected to the mixing member 61 in a state of communicating with the cylindrical portion 62, and the solvent supply pipe 52 is connected to supply the solvent R tangentially to the annular flow path 64. It
The powder discharge pipe 45, the tubular portion 62 of the mixing member 61, and the supply port 11 are inclined such that their axial center A2 is directed downward (the angle with respect to the horizontal plane (the horizontal direction in FIG. 1) is about 45 degrees). It is arranged so as to be inclined.

That is, the powder P discharged from the discharge port 43b of the fixed amount supply unit 40 to the powder discharge pipe 45 is introduced into the supply port 11 through the tubular portion 62 of the mixing member 61 along the axis A2. On the other hand, since the solvent R is supplied tangentially to the annular flow path 64, the solvent R is circulated through the annular slit 63 formed on the inner circumferential side of the annular flow path 64 in a continuous hollow cylindrical vortex state. It is supplied to the supply port 11.
Therefore, the powder P and the solvent R are uniformly pre-mixed by the cylindrical supply port 11, and the pre-mixture Fp is sucked and introduced into the supply chamber 13 of the suction pump mechanism unit Y.

[Suction pump mechanism part]
The suction pump mechanism section Y will be described with reference to FIGS. 1 and 4 to 7.
As shown in FIG. 4, the suction pump mechanism unit Y includes a main body casing 1 having a cylindrical outer peripheral wall portion 4 whose both ends are closed by a front wall portion 2 and a rear wall portion 3. 1, a rotor 5 concentrically provided to be rotationally driven, a cylindrical stator 7 concentrically fixed to the front wall 2 inside the main body casing 1, and a rotor 5 being rotationally driven. It is configured to include a pump drive motor M3 and the like.

As shown in FIG. 5, on the outer side in the radial direction of the rotor 5, a plurality of rotor blades 6 project toward the front side (the left side in FIG. 4) which is the front wall portion 2 side and are equally spaced in the circumferential direction. It is provided integrally with the rotor 5 in a state of being lined up with.
The cylindrical stator 7 is provided with a plurality of through holes 7a and 7b arranged side by side in the circumferential direction, and the stator 7 is located on the front side of the rotor 5 (on the left side in FIG. 4) and on the inner side in the radial direction of the rotary blade 6. Is fixed to the front wall portion 2 and is located between the stator 7 and the outer peripheral wall portion 4 of the main body casing 1 to form an annular blade chamber 8 around which the rotary blades 6 orbit.

As shown in FIGS. 4 to 6, the supply port 11 for sucking and introducing the preliminary mixture Fp, in which the powder P and the solvent R are premixed by the mixing mechanism 60, into the main body casing 1 by the rotation of the rotary blades 6. It is provided at a position deviated to the outer peripheral side from the central axis of the front wall portion 2 (the axial center A3 of the main body casing 1).
As shown in FIGS. 4 and 6, an annular groove 10 is formed on the inner surface of the front wall portion 2 of the casing 1, and a supply port 11 is provided so as to communicate with the annular groove 10.
As shown in FIG. 4 and FIG. 5, the cylindrical discharge portion 12 that discharges the slurry F generated by mixing the powder P and the solvent R is the circumference of the cylindrical outer peripheral wall portion 4 of the main body casing 1. It is provided at one location in the direction extending in the tangential direction of the outer peripheral wall portion 4. A discharge flow passage 12a, which is a flow passage for the slurry F inside the discharge portion 12, and the blade chamber 8 communicate with each other at a discharge port 12b. The discharge flow path 12a is provided so as to extend in the tangential direction of the outer peripheral wall portion 4. The discharge port 12b is an elliptical opening provided in the outer peripheral wall portion 4. The circumferential connection part C, which is a part around the discharge port 12b and which connects the discharge flow path 12a and the blade chamber 8, has an upstream part C1 and a downstream part C2. The upstream side portion C1 is a portion of the circumferential connection portion C on the front side with respect to the rotation direction of the rotary blade 6 described later. The downstream side portion C2 is a portion of the circumferential connection portion C on the rear side with respect to the rotation direction of the rotary blade 6 described later. An R chamfer is applied to the downstream portion C2. The radius of the R chamfer is preferably 2 mm or more.

As shown in FIGS. 1 and 4, in this embodiment, the slurry F discharged from the discharge unit 12 is supplied to the recirculation mechanism unit 70 through the discharge passage 18, and is supplied to the separation unit 71 of the recirculation mechanism unit 70. The undissolved slurry Fr from which air bubbles have been separated is circulated to supply the undissolved slurry Fr into the main body casing 1 through the circulation passage 16 at the central portion (concentric with the axis A3) of the front wall portion 2 of the main body casing 1. It is provided.
Further, as shown in FIGS. 4 to 6, the partition plate 15 that partitions the inner peripheral side of the stator 7 into the supply chamber 13 on the front wall portion 2 side and the introduction chamber 14 on the rotor 5 side is a front side of the rotor 5. Is provided so as to rotate integrally with the rotor 5, and a scraping blade 9 is provided on the front wall portion 2 side of the partition plate 15. A plurality of sweeping blades 9 are provided concentrically at equal intervals in the circumferential direction (four in FIG. 6), and the rotor 5 is provided in a state in which each sweeping blade 9 has its tip portion 9T entered into the annular groove 10. It is arranged so as to be able to orbit integrally with.

The supply chamber 13 and the introduction chamber 14 are configured to communicate with the blade chamber 8 through the plurality of through holes 7a and 7b of the stator 7, the supply port 11 communicates with the supply chamber 13, and the introduction port 17 is introduced. It is configured to communicate with the chamber 14.
Specifically, the supply chamber 13 and the blade chamber 8 communicate with each other through a plurality of supply chamber-side through holes 7a that are arranged at equal intervals in the circumferential direction in the portion of the stator 7 that faces the supply chamber 13, and The blade chamber 8 and the blade chamber 8 are communicated with each other through a plurality of inlet chamber-side through holes 7b that are arranged at equal intervals in the circumferential direction in a portion of the stator 7 that faces the inlet chamber 14.

Each part of the suction pump mechanism unit Y will be described.
As shown in FIG. 4, the rotor 5 is configured such that its front surface bulges out in a substantially truncated cone shape, and a plurality of rotor blades 6 are arranged at equal intervals on the outer peripheral side thereof so as to project forward. It is provided. In FIG. 5, ten rotary blades 6 are arranged at equal intervals in the circumferential direction. The rotor blade 6 is formed so as to project from the outer peripheral side to the inner peripheral side of the rotor 5 so as to incline rearward in the rotational direction as it goes from the inner peripheral side to the outer peripheral side. The angle between the rotary blades 6 and the moving direction (rotational direction) of the rotary blades 6 is preferably 10 ° or more and 80 ° or less. In this embodiment, the angle is 30 ° (see FIG. 5). The inner diameter of the tip of the rotary blade 6 is formed to be slightly larger than the outer diameter of the stator 7. The end 6b of the rotary blade 6 on the outer peripheral wall 4 side is chamfered. More specifically, the chamfer is applied to a portion of the end portion 6b on the rear side in the rotation direction of the rotary blade 6. The radius of the R chamfer is preferably 2 mm or more.
The rotor 5 is connected to the drive shaft 19 of the pump drive motor M3 inserted through the rear wall portion 3 into the main body casing 1 in a state where the rotor 5 is located concentrically with the main body casing 1 in the main body casing 1. , Is driven to rotate by the pump drive motor M3.
When the rotor 5 is rotationally driven in a direction in which the tip end portion of the rotor blade 6 is on the front side when viewed in the axial direction (viewed in the direction VV in FIG. 4 as shown in FIG. 5), the rotor blade 6 is rotated. A so-called local boiling (cavitation) is generated on a surface (back surface) 6a which is the rear side in the rotation direction.

As shown in FIGS. 4, 6 and 7, the partition plate 15 has a generally funnel shape having an outer diameter slightly smaller than the inner diameter of the stator 7. Specifically, the funnel-shaped partition plate 15 is provided with a funnel-shaped portion 15b, which is opened at a cylindrical sliding contact portion 15a with a top protruding in a cylindrical shape, in the central portion thereof, and the funnel-shaped portion 15b. The outer peripheral portion is configured to include an annular flat plate portion 15c that is in a state of being orthogonal to the axis A3 of the main body casing 1 on both the front surface and the rear surface.
As shown in FIGS. 4 and 5, a plurality of partition plates 15 are arranged at equal intervals in the circumferential direction in a posture in which the top cylindrical sliding contact portion 15 a faces the front wall portion 2 side of the main body casing 1. It is attached to the attachment portion 5a on the front surface of the rotor 5 via the spacing members 20 arranged at the locations (four locations in this embodiment).

  As shown in FIGS. 5 and 7 (c), when the partition plate 15 is attached to the rotor 5 at each of a plurality of locations via the spacing members 20, the stirring blades 21 are attached to the rear wall portion 3 side of the main body casing 1. When the rotor 5 is rotationally driven, the four stirring blades 21 rotate integrally with the rotor 5.

  As shown in FIGS. 4 and 6, in this embodiment, the cylindrical introduction port 17 is concentric with the main body casing 1 and is provided at the center of the front wall portion 2 of the main body casing 1. A narrowed portion 14a having a smaller diameter than the inner diameter of the circulation path 16 and a smaller diameter than the cylindrical sliding contact portion 15a of the partition plate 15 and having a small flow passage area is formed in the introduction port 17. As the rotor blades 6 of the rotor 5 rotate, the slurry F is discharged through the discharge part 12 and the undissolved slurry Fr is introduced through the throttle part 14a of the introduction port 17. Therefore, the suction pump mechanism The inside of the part Y is decompressed.

  As shown in FIGS. 4 to 6, the supply port 11 has a main casing 1 with an opening (inlet) that opens into the main casing 1 including a part of the annular groove 10 in the circumferential direction. It is provided in the front wall portion 2 so as to be located laterally of the opening of the introduction port 17 with respect to the inside. Further, the supply port 11 has a shaft center A2 parallel to the shaft center A3 of the main body casing 1 in a plan view (upward and downward views in FIGS. 1 and 4) and a horizontal direction view orthogonal to the shaft center A3 of the casing 1. 1 and 4, the front wall of the main body casing 1 is in a downward inclined posture in which the axial center A2 approaches the front wall portion 2 of the main body casing 1 as the axial center A2 approaches the front wall portion 2 of the main body casing 1. It is provided in the section 2. Incidentally, the downward inclination angle of the supply port 11 with respect to the horizontal direction (the horizontal direction in FIGS. 1 and 4) is about 45 degrees as described above.

  As shown in FIGS. 4 and 6, the stator 7 is attached to the inner surface (the surface facing the rotor 5) of the front wall portion 2 of the main body casing 1 so that the front wall portion 2 of the main body casing 1 and the stator 7 are separated from each other. It is fixed so that it is integrated. In the stator 7, the plurality of supply-chamber-side through holes 7a arranged in the portion facing the supply chamber 13 are formed in a substantially circular shape, and the plurality of supply-chamber-side through holes 7a that are larger than the flow passage area of the supply chamber 13 are formed. The total flow passage area is set to be small, and the plurality of introduction chamber side through holes 7b arranged in the portion facing the introduction chamber 14 are formed in a substantially elliptical shape, and the flow passage of the introduction chamber 14 is formed. The total flow passage area of the plurality of supply chamber side through holes 7b is set to be smaller than the area. By rotating the rotary blades 6 of the rotor 5, the slurry F is discharged through the discharge part 12, the preliminary mixture Fp is supplied through the supply chamber side through hole 7a of the supply chamber 13, and the introduction port 17 is supplied. Since the undissolved slurry Fr is introduced via this, the pressure inside the suction pump mechanism section Y is reduced.

  As shown in FIGS. 6 and 7, in this embodiment, each of the scraping blades 9 is formed in a rod shape, and the rod-shaped scraping blade 9 is viewed in the radial direction of the rotor 5 (viewed from the front and back sides of the paper surface of FIG. 7B). The tip side of the blade 9 is located closer to the front wall portion 2 and is closer to the tip side of the rod-shaped scraping blade 9 when viewed from the axial direction of the rotor 5 (when viewed from the front and back sides of the paper surface of FIG. 7A). The base end portion 9B of the rod-shaped scraping blade 9 is fixed so as to rotate integrally with the rotor 5 in an inclined posture positioned on the radially inner side of the rotor 5, and the rotor 5 is viewed in the axial direction (see FIG. 7 (a) as viewed from the front and back sides of the paper surface), the tip of the scraping blade 9 is rotationally driven in a direction in which the tip is on the front side (direction indicated by an arrow in FIGS. 4 to 7).

The scraping blade 9 will be described with reference to FIGS. 5 to 7.
The scraping blade 9 includes a base end portion 9B fixed to the partition plate 15, an intermediate portion 9M exposed to the supply chamber 13, and a tip end portion 9T fitted to (that is, enters) the annular groove 10. It is configured in a rod shape that is provided in series from the base end to the tip.

As shown in FIG. 5, FIG. 6, and FIG. 7B, the base end portion 9B of the raking blade 9 is formed in a substantially rectangular plate shape.
As shown in FIG. 5, FIG. 6, FIG. 7 (a) and FIG. 7 (b), the intermediate portion 9 </ b> M of the raking blade 9 is formed in a substantially triangular prism shape having a substantially triangular cross section (particularly, (See FIG. 5). Since the scraping blade 9 is provided in the inclined posture as described above, one side surface of the three side surfaces of the triangular column-shaped intermediate portion 9M that faces the front side in the rotation direction of the rotor 5 (hereinafter referred to as a diffusion surface). Is a front-down shape that inclines toward the front side in the rotational direction of the rotor 5, and is directed radially outward with respect to the radial direction of the rotor 5 (hereinafter sometimes referred to as diagonal outward). ) Is configured (in particular, see FIGS. 6 and 7).

  That is, since the rod-shaped scraping blade 9 is provided in the inclined posture as described above, the intermediate portion 9M of the sweeping blade 9 exposed to the supply chamber 13 is more than the tip portion 9T fitted in the annular groove 10 than the rotor 5T. The radiation surface 9m located radially outward of the intermediate portion 9M and directed to the front side in the rotational direction of the intermediate portion 9M is inclined downward toward the front side in the rotational direction of the rotor 5, and further in the radial direction of the rotor 5. In contrast, it is inclined diagonally outward. As a result, the preliminary mixture Fp scraped out from the annular groove 10 by the tip portion 9T of the sweeping blade 9 is radially outside the rotor 5 in the supply chamber 13 by the diffusion surface 9m of the intermediate portion 9M of the sweeping blade 9. It is guided to flow toward one side.

As shown in FIGS. 6, 7A and 7B, the tip portion 9T of the raking blade 9 is a substantially quadrangular prism having a substantially rectangular cross section, and is viewed in the axial direction of the rotor 5 ( In FIG. 7A, when viewed from the front and back sides of the paper, the outward side surface 9o of the four side surfaces facing the radially outer side of the rotor 5 is the inner side of the inner surface of the annular groove 10 facing the radially inner side. Along the inner side surface of the annular groove 10, the inward facing side surface 9i is formed in an arc shape so as to extend along the radially inner side of the rotor 5 out of the four side surfaces. .
Further, among the four side surfaces of the quadrangular prism-shaped tip portion 9T, the scraping surface 9f facing the front side in the rotation direction of the rotor 5 has a downward slope that is inclined toward the front side in the rotation direction of the rotor 5, and the diameter of the rotor 5 is smaller. It is configured to be directed radially outward with respect to the direction (hereinafter, may be referred to as an oblique outward direction).
As a result, the preliminary mixture Fp scraped out from the annular groove 10 by the tip portion 9T of the sweeping blade 9 is directed outward in the radial direction of the rotor 5 by the scraping surface 9f of the tip portion 9T of the sweeping blade 9. It will be discharged into the supply chamber 13.
Further, the tip surface 9t of the tip portion 9T of the scraping blade 9 is configured to be parallel to the bottom surface of the annular groove 10 in a state where the tip portion 9T is fitted in the annular groove 10.

  Further, when the rotor 5 is rotationally driven in a direction in which the tip of the sweeping blade 9 is on the front side when viewed in the axial direction (viewing from the front and back of the paper surface of FIG. 7A), the base end portion of the sweeping blade 9 is formed. 9B, the intermediate portion 9M, and the tip portion 9T are each provided with a surface (back surface) 9a on the rear side in the rotation direction. On the back surface 9a, so-called local boiling (cavitation) is generated by the rotation of the scraping blade 9.

  The four sweeping blades 9 configured as described above are arranged in the tilted posture as described above in the circumferential direction at intervals of 90 degrees at the central angle, and the base end portions 9B are respectively arranged. It is fixedly provided on the annular flat plate portion 15c of the partition plate 15.

As shown in FIG. 4, the partition plate 15 provided with the scraping blades 9 is attached to the attachment portion 5a on the front surface of the rotor 5 by the spacing member 20 while being spaced from the front surface of the rotor 5. 5 is arranged in the main body casing 1 in a state in which the cylindrical sliding contact portion 15a of the partition plate 15 is slidably fitted in the introduction port 17 so as to be rotatable.
Then, between the bulging front surface of the rotor 5 and the rear surface of the partition plate 15, a tapered introduction chamber 14 having a smaller diameter on the front wall portion 2 side of the main body casing 1 is formed, and the introduction port 17 has the partition plate 15. It is configured so as to communicate with the introduction chamber 14 via the cylindrical sliding contact portion 15 a.
An annular supply chamber 13 communicating with the supply port 11 is formed between the front wall portion 2 of the main body casing 1 and the front surface of the partition plate 15.

  Then, when the rotor 5 is rotationally driven, the partition plate 15 rotates integrally with the rotor 5 in a state where the tubular sliding contact portion 15 a is in sliding contact with the introduction port 17, and thus the rotor 5 and the partition plate 15 are rotated. Even in the rotating state, the introduction port 17 is configured to be maintained in a state in which the introduction port 17 communicates with the introduction chamber 14 via the cylindrical sliding contact portion 15a of the partition plate 15.

[Recirculation mechanism part]
The recirculation mechanism portion (an example of a separation portion) 70 is configured to separate the dissolved liquid by specific gravity in the cylindrical container 71, and as shown in FIG. 1, the discharge portion 12 to the discharge passage of the suction pump mechanism portion Y. From the slurry F supplied through 18, the undissolved slurry Fr in a state in which the powder P not completely dissolved may be contained in the circulation path 16 and the slurry F in a state in which the powder P is substantially completely dissolved is supplied. The discharge paths 22 are configured to be separated from each other. The discharge passage 18 and the circulation passage 16 are connected to the lower portion of the cylindrical container 71, and the discharge passage 22 is connected to the upper portion of the cylindrical container 71 and the supply destination 80 of the slurry F.
Here, although not shown, the recirculation mechanism unit 70 arranges the introduction pipe to which the discharge passage 18 is connected so as to project inward from the bottom surface of the cylindrical container 71, and the discharge pipe 22 is provided above the cylindrical container 71. In addition to having a discharge part connected thereto, a circulation part connected to the circulation path 16 is provided at the bottom, and a twisting plate for swirling the flow of the slurry F discharged from the introduction pipe is provided at the discharge upper end of the introduction pipe. It is configured. Thereby, the bubbles of the solvent R can be separated from the slurry F, and the bubbles of the solvent R can be supplied into the introduction chamber 14 in a state where the bubbles of the solvent R are separated from the undissolved slurry Fr circulated and supplied to the circulation path 16.

[Control part]
Although not shown, the control unit included in the dispersion system 100 includes a known arithmetic processing device including a CPU, a storage unit, and the like, and the quantitative supply device X, the suction pump mechanism unit Y, and the solvent supply unit that configure the dispersion system 100. The operation of each device such as 50 is controllable.
In particular, the control unit is configured to be able to control the rotation speed of the rotor 5 (rotary blade 6), and the pressure in the outlet region of the supply chamber side through hole 7a and the introduction chamber side through hole 7b (throttle through hole) of the stator 7 is The rotation speed of the rotor blade 6 is set so that the saturated vapor pressure of the solvent R (in the case of water at 25 ° C., 3.169 kPa) is equal to or less over the entire circumference of the outlet region, and the rotation is performed at the set rotation speed. By rotating the blades 6, at least the region in the blade chambers 8 immediately after passing through the supply chamber side through holes 7a and the introduction chamber side through holes 7b of the stator 7 is continuous over the entire circumference in the blade chambers 8. Thus, the solvent R can be formed as a fine bubble region in which a large number of fine bubbles (micro bubbles) are generated.
Further, the control unit sets the pressure of the mixed fluid in the discharge flow passage 12a when the fluid space S communicates with the discharge flow passage 12a to be equal to or lower than the saturated vapor pressure of the solvent R (3.169 kPa for water at 25 ° C.). By setting the rotation speed of the rotary blades 6 to, and rotating the rotary blades 6 at the set rotation speed, the region of the discharge flow path 12a immediately after passing through at least the discharge port 12b has fine bubbles of the solvent R ( It is configured so that it can be formed as a fine bubble region in which a large number of micro bubbles are generated.

[Operation of distributed system]
Next, the operation of this distributed system 100 will be described.
First, in a state in which the quantitative supply device X is stopped, the shutter valve 46 is closed, and the suction of the powder P through the powder discharge pipe 45 is stopped, the rotor 5 is rotated while supplying only the solvent R from the solvent supply unit 50. The suction pump mechanism unit Y is rotated and the operation of the suction pump mechanism unit Y is started. The shutter valve 46 is opened when the inside of the suction pump mechanism unit Y becomes a negative pressure state (for example, a vacuum state of about −0.06 MPa) after a predetermined operation time has elapsed. As a result, the expansion chamber 47 of the constant quantity supply device X is placed in a negative pressure state (about -0.06 MPa), and the inside of the introduction section 41 and the vicinity of the lower opening 31b of the hopper 31 are placed between the negative pressure state and the atmospheric pressure state. To the pressure state of.

Then, the fixed amount supply device X is operated, and the powder P stored in the hopper 31 is fixed from the lower opening 31b of the hopper 31 by the stirring action of the stirring blade 32A and the negative pressure suction force of the suction pump mechanism Y. Through the expansion chamber 47 of the supply unit 40, a predetermined amount is continuously and quantitatively supplied to the mixing member 61 of the mixing mechanism 60. In parallel, the solvent supply unit 50 is operated, and the solvent R is continuously supplied in a fixed amount by a predetermined amount to the mixing member 61 of the mixing mechanism 60 by the negative pressure suction force of the suction pump mechanism unit Y.
From the mixing member 61 of the mixing mechanism 60, the powder P is supplied to the supply port 11 through the cylindrical portion 62 of the mixing member 61, and the solvent R passes through the annular slit 63 to form a continuous hollow cylindrical vortex flow. The powder P and the solvent R are pre-mixed by the supply port 11 in this state, and the pre-mixture Fp is introduced into the annular groove 10.

When the rotor 5 is rotationally driven and the partition plate 15 rotates integrally with the rotor 5, the scraping blade 9 concentrically provided on the partition plate 15 has the tip portion 9T fitted into the annular groove 10. Orbit around.
Then, as shown by the solid arrow in FIGS. 4 and 5, the preliminary mixture Fp flowing through the supply port 11 and introduced into the annular groove 10 is fitted into the annular groove 10 and the tip of the scraping blade 9 that circulates. The rotor 5 is scraped by the portion 9T, and the scraped preliminary mixture Fp is roughly along the front surface of the funnel-shaped portion 15b of the partition plate 15 and the front surface of the annular flat plate portion 15c in the supply chamber 13. In the rotation direction, further passes through the supply chamber side through hole 7a of the stator 7 and flows into the blade chamber 8, flows in the blade chamber 8 in the rotation direction of the rotor 5, and is discharged from the discharge portion 12. To be done.

The preliminary mixture Fp introduced into the annular groove 10 undergoes a shearing action when it is scraped out by the tip portion 9T of the scraping blade 9. In this case, between the outward side surface 9o of the tip 9T of the sweeping blade 9 and the inward inner surface of the inner annular groove 10, and between the inward side 9i of the tip 9T of the sweeping blade 9 and the inner annular groove. A shearing action is exerted between the outer surface 10 and the inner surface. At the same time, so-called local boiling (cavitation) occurs on the back surface 9a on the back surface side of the sweeping blade 9 in the rotation direction, as the sweeping blade 9 rotates. When passing through the supply chamber side through hole 7a of the stator 7, a shearing action is exerted.
That is, since the shearing force can be applied to the preliminary mixture Fp in the supply chamber 13 and local boiling can be generated, the preliminary mixture Fp to be scraped out is sheared from the sweeping blade 9 and the supply chamber side through hole 7a. While being received and mixed, the local boiling (cavitation) generated on the back surface 9a of the scraping blade 9 allows the powder P to be dispersed in the solvent R more favorably. Therefore, such a pre-mixture Fp can be supplied, and good dispersion of the powder P in the solvent R can be expected in the blade chamber 8.

  The slurry F discharged from the discharge unit 12 is supplied to the recirculation mechanism unit 70 through the discharge passage 18, and in the recirculation mechanism unit 70, the undissolved slurry Fr in a state containing the powder P which is not completely dissolved, The powder P is separated into the slurry F in a substantially completely dissolved state, the bubbles of the solvent R are separated, and the undissolved slurry Fr is supplied to the inlet port 17 of the suction pump mechanism unit Y again through the circulation path 16. Then, the slurry F is supplied to the supply destination 80 through the discharge passage 22.

  The undissolved slurry Fr is introduced into the introduction chamber 14 via the throttle portion 14a of the introduction port 17 in a state where the flow rate is limited. In the introduction chamber 14, the stirring blades 21 that rotate rotate to shear and further finely crush it. Further, when passing through the introduction chamber side through hole 7b, it also receives shearing action and breaks. It At this time, the gas is introduced into the blade chamber 8 through the introduction chamber side through hole 7b in a state where the flow rate is limited. Then, it flows in the rotation direction of the rotor 5 in the blade chamber 8 and is discharged from the discharge unit 12.

Here, by the control unit, the pressure in the blade chamber 8 which is the outlet region of the supply chamber side through hole 7a and the introduction chamber side through hole 7b of the stator 7 becomes equal to or lower than the saturated vapor pressure of the solvent R over the entire circumference thereof. Thus, the rotation speed of the rotary blade 6 is set, and the rotary blade 6 is rotated at the set rotation speed.
As a result, the pressure in the blade chamber 8 that is the outlet region is set to be equal to or lower than the saturated vapor pressure of the solvent R (for water of 25 ° C., 3.169 kPa) over the entire circumference by setting the rotation speed of the rotary blade 6. Therefore, at least in the region within the blade chamber 8 immediately after passing through the supply chamber side through hole 7a and the introduction chamber side through hole 7b of the stator 7, generation of fine bubbles (micro bubbles) due to vaporization of the solvent R is promoted. The region is in a state of being formed as a fine bubble region in which a large number of fine bubbles are continuously generated over the entire circumference in the blade chamber 8.
Therefore, the solvent R that has penetrated into the agglomerates (so-called lumps) of the powder P is foamed over the entire circumference of the blade chamber 8 to promote the crushing of the agglomerates, and further the generated fine bubbles. Of the powder P is further promoted by the impact force when it is pressed and disappears in the blade chamber 8, and as a result, the slurry F existing on the entire circumference in the blade chamber 8 is almost entirely dispersed. It is possible to generate a high-quality slurry F in which the powder P is well dispersed in the solvent R.

  Regarding the operation of the dispersion system described above, the behaviors of the premix Fp and the undissolved slurry Fr in the blade chamber 8 will be further described. As described above, the preliminary mixture Fp flows into the blade chamber 8 through the supply chamber side through hole 7a of the stator 7, and the undissolved slurry Fr flows through the introduction chamber side through hole 7b.

  As shown in FIG. 5, ten blades 6 are arranged in the blade chamber 8. In the blade chamber 8, ten fluid spaces S defined by two rotor blades 6 arranged at equal intervals, a stator 7, and an outer peripheral wall portion 4 are formed. Due to the movement (rotation) of the rotary blades 6 inside the blade chamber 8, the plurality of fluid spaces S are rotationally moved around the axis A3, and the premixture is supplied from the supply chamber 13 to the fluid space S through the supply chamber side through hole 7a. Fp is sucked, and the undissolved slurry Fr is sucked into the fluid space S from the introduction chamber 14 through the introduction side through hole 7a. Since the fluid space S is also rotating with the rotation of the rotary blades 6, the pressure inside the fluid space S is increased by the centrifugal force and the above-mentioned suction force. Then, when the fluid space S communicates with the discharge port 12b, the mixed fluid (the undissolved slurry Fr and the preliminary mixture Fp) is discharged from the fluid space S to the discharge port 12b.

Here, the control unit sets the rotational speed of the rotary blades 6 so that the pressure of the mixed fluid in the discharge flow passage 12a when the fluid space S communicates with the discharge flow passage 12a becomes equal to or lower than the saturated vapor pressure of the solvent R, The rotary blade 6 is rotated at the set rotation speed.
As a result, the pressure of the region of the discharge flow path 12a immediately after passing through the discharge port 12b is set to be equal to or lower than the saturated vapor pressure of the solvent R (3.169 kPa in the case of water at 25 ° C.), by setting the rotation speed of the rotary blade 6. Therefore, at least immediately after passing through the discharge port 12b in the discharge flow path 12a, generation of fine bubbles (micro bubbles) due to vaporization of the solvent R is promoted, and in the region, a large number of fine bubbles are generated. It is in a state of being formed as a region.
Therefore, in the discharge channel 12a, the solvent R that has penetrated into the agglomerates (so-called lumps) of the powder P is foamed, whereby the crushing of the agglomerates is promoted, and the dispersion of the powder P in the solvent R is good. A high quality slurry F can be produced.

  Next, based on FIG. 8 and FIG. 9, a description will be given of the verification test results of the generation of fine bubbles when the configuration of the first embodiment is adopted and the rotational speed of the rotor 5 (rotary blade 6) is appropriately controlled. To do.

  These figures show a state in which the main body casing 1 is made of a transparent resin, water as a fluid is passed through the suction pump mechanism portion Y, and the discharge flow passage 12a and the discharge port 12b are observed. The number of rotations of the rotary blade 6 was gradually increased, and the state of bubbles generated by the reduced pressure boiling in the discharge passage 12a was confirmed. At lower rotation speeds than in the state of FIG. 8, generation of bubbles was not observed. At the rotation speed (1800 rpm) in FIG. 8, fine bubbles are generated from the region immediately after passing through the discharge port 12b to the discharge flow path 12a, and appear as white mist or bubbles. In the state of FIG. 9 (3600 rpm) in which the number of revolutions is further increased, the white mist is thicker and finer, more bubbles are generated, and the fine bubble region is enlarged. This is because the pressure of the mixed fluid when the fluid space (S) communicates with the discharge flow path (12a) decreases as the number of rotations of the rotor blades increases, and the saturated vapor pressure of water (at 25 ° C. 3.169 kPa), indicating that reduced pressure boiling has occurred.

<Second Embodiment>
In the above-described first embodiment, the chamfer is applied to the downstream side portion C2 of the circumferential connection portion C. Further, the end portion 6b on the outer peripheral wall portion 4 side of the rotary blade 6 was rounded. As shown in FIG. 10, in the second embodiment, the above-described R chamfer is not provided, and the downstream portion C2 and the end portion 6b of the rotary blade 6 have a sharp shape.

  Next, based on FIG. 11 and FIG. 12, a description will be given of the proof test results of the generation of fine bubbles when the configuration of the second embodiment is adopted and the rotational speed of the rotor 5 (rotary blade 6) is appropriately controlled. To do. At lower rotation speeds than in the state of FIG. 11, generation of bubbles was not seen. At the rotation speed (2400 rpm) in FIG. 11, a slightly white haze or bubble-like region is generated in the region immediately after passing through the discharge port 12b. In the state of FIG. 12 (3600 rpm) in which the number of revolutions is further increased, a white mist region is generated from the region immediately after passing through the discharge port 12b to the discharge flow path 12a (fine bubble region). The pressure of the mixed fluid when the fluid space (S) communicates with the discharge flow path (12a) decreases as the number of revolutions of the fluid is increased, and the saturated vapor pressure of water (3,169 kPa at 25 ° C.). Below, indicating that vacuum boiling has occurred.

  In the first embodiment having the R chamfer, a considerably wide fine bubble region was generated at a rotation speed of 1800 rpm (FIG. 8), but in the second embodiment not having the R chamfer, the fine bubbles should be generated unless the rotation speed is increased to 2400 rpm. The area did not occur. From the above experimental results, the effects of the R chamfering of the downstream side portion C2 of the circumferential connection portion C and the R chamfering of the end portion 6b of the rotary blade 6 on the outer peripheral wall portion 4 side are shown.

  13 and 14 are simulation results of the flow velocity of the mixed fluid in the fluid space S and the discharge flow passage 12a. In the second embodiment having no R chamfer shown in FIG. 13, a black region (region of low flow velocity) exists near the center of the discharge flow channel 12a. The region immediately after passing through the discharge port 12b is also a black region except for the upstream side (the right side in the drawing) in the rotating direction of the rotary blade 6.

  On the other hand, in the first embodiment having the R chamfer shown in FIG. 13, white regions (regions of high flow velocity) are increased inside the discharge flow passage 12a as compared with FIG. Also in the region immediately after passing through the ejection port 12b, the white region is increased as compared with FIG. This is because the downstream portion C2 of the circumferential connection portion C is R-chamfered and the end portion 6b of the rotary blade 6 on the outer peripheral wall portion 4 side is R-chamfered, so that the discharge flow path from the fluid space S is discharged. It shows that the flow of the mixed fluid to 12a became smooth.

<Third Embodiment>
In the above-described embodiment, the partition plate 15 is attached to the rotor 5, and the partition plate 15 is provided with the scraping blade 9. Then, these rotate integrally, and the scraping blades 15 scrape out the preliminary mixture Fp from the annular groove 10 to promote mixing. In the third embodiment, the rotor 5 is not provided with the partition plate 15, the scraping blades 9, and the spacing member 20, and the annular groove 10 on the inner surface of the front wall portion 2 of the casing 1 is not provided. Instead, in the third embodiment, the introduction chamber 14 is formed between the front wall portion 2 fixed to the suction pump mechanism portion Y and the rotor 5 rotationally driven by the motor M3, and the outer periphery of the rotor 5 is formed. A rotor blade 6 is disposed in the portion, and the front wall portion 2 has a first facing surface D1 that is a smooth flat surface that is orthogonal to the rotation axis of the rotor 5 and faces the rotor 5, and the rotor 5 is the rotor 5 And a second facing surface D2 that is a smooth flat surface that is orthogonal to the rotation axis A3 and faces the first facing surface D1.

  Specifically, as shown in FIG. 15, the inner surface of the front wall portion 2 of the casing 1 inside the stator 7 is formed as a smooth flat surface (first facing surface D1). The first facing surface D1 is formed in a hollow disk shape except for a portion connected to the supply port 11 when viewed from a direction parallel to the axis A3. The first facing surface D1 is a plane orthogonal to the axis A3, and is arranged so as to face the rotor 5.

  A region on the front wall portion 2 side of the rotor 5 inside the rotary blade 6 is formed as a smooth flat surface (second facing surface D2). The second facing surface D2 is formed in a hollow disc shape when viewed from a direction parallel to the axis A3. The second facing surface D2 is a plane orthogonal to the axis A3, and is arranged so as to face the first facing surface D1.

  An introduction chamber 14 is formed between the front wall 2 and the rotor 5 configured as described above. In this embodiment, since the partition plate 15 is not provided, the front wall portion 2 and the rotor 5 directly face each other, and the space between the front wall portion 2 and the rotor 5 is formed as a continuous space. . As a result, the introduction chamber 14 is formed between the front wall portion 2 and the rotor 5 and is sandwiched between the first facing surface D1 and the second facing surface D2, which are smooth flat surfaces. Therefore, the flow of the mixed fluid in the introduction chamber 2 becomes smoother. This increases the flow velocity of the mixed fluid, so that fine bubbles can be generated more efficiently, and the quality of the generated sol can be further improved.

  The "smoothness" between the first facing surface D1 and the second facing surface D2 means that the surface is not provided with structures such as grooves, holes, corrugations, and blades, and is a "planar surface" by ordinary machining. If the surface is formed as "", it corresponds to this. It is not necessary to make the surface roughness particularly small, for example, mirror finish or hairline finish.

<Relationship between rotor blade angle and mixed fluid pressure>
The pressure of the mixed fluid in the introduction chamber 14 and the fluid space S was calculated by simulation using a structural model in which the angle of the rotary blade 6 was variously changed. The structural model was the same as the above-described flow velocity simulation except for the angle of the rotary blade 6, and the calculation was performed under the condition that the rotation speed of the rotor 5 was 3600 rpm.

  The results are shown in the graph of FIG. The vertical axis represents the minimum value of the pressure of the mixed fluid in the introduction chamber 14 and the fluid space S. The horizontal axis represents the angle of the rotary blade 6, that is, the angle formed by the rotary blade 6 and the moving direction (rotational direction) of the rotary blade 6. When the angle of the rotor blade 6 is 0 °, the rotor blade 6 and the rotation direction are parallel to each other, and when the angle is 90 °, the rotor blade 6 is arranged in a direction coinciding with the diameter direction of the rotor 5.

  As shown in the graph of FIG. 16, when the angle of the rotary blade 6 changes, the pressure of the mixed fluid changes periodically. In the range of the angle from 0 ° to around 90 °, the pressure of the mixed fluid becomes low (0.4 MPa or less), and the reduced pressure boiling is likely to occur. However, at the angle of 31 ° to 90 °, the pressure is too low, which may cause a drawback that the suction / discharge capability of the suction pump mechanism section Y as a pump becomes low. Therefore, the preferable angle of the rotary blade 6 is more than 0 ° and 31 ° or less.

<Another embodiment>
In the above-described embodiment, both the downstream side portion C2 of the circumferential connection portion C and the portion on the rear side in the rotation direction of the end portion 6b of the rotary blade 6 on the outer peripheral wall portion 4 side are subjected to R chamfering. Alternatively, only one of them may be rounded. Even in that case, it is considered that there is an effect of smoothing the flow of the mixed fluid from the fluid space S to the discharge passage 12a. Further, C chamfering may be performed instead of R chamfering. Other forms are also conceivable for the chamfered portion. For example, not only the downstream side portion C2 of the circumferential connection portion C but also the upstream side portion C1 may be chamfered, or the entire circumferential connection portion C may be chamfered. The end portion 6b of the rotary blade 6 may be provided not only on the rear side portion in the rotation direction but also on the front side portion, or may be chamfered on the front side portion in the rotation direction.

  Note that the configurations disclosed in the above-described embodiments (including other embodiments, the same applies hereinafter) can be applied in combination with the configurations disclosed in the other embodiments, as long as no contradiction occurs. The embodiment disclosed in the present specification is an exemplification, and the embodiment of the present invention is not limited to this, and can be appropriately modified without departing from the object of the present invention.

1: Main body casing (suction pump mechanism part)
4: outer peripheral wall part 6: rotary blade 6b: end part 7: stator 7a: through hole (through hole on the supply chamber side)
7b: Through hole (introducing chamber side through hole)
8: Blade chamber 12a: Discharge flow path 12b: Discharge port 14: Introduction chamber 100: Dispersion system C: Circular connection part C2: Downstream side part D1: First facing surface D2: Second facing surface F: Slurry (sol)
Fp: preliminary mixture Fr: undissolved slurry (part of sol)
P: Powder (dispersoid)
R: solvent (liquid phase dispersion medium)
S: Fluid space Y: Suction pump mechanism

Claims (11)

A dispersion system comprising a suction pump mechanism section, which allows a mixed fluid of a dispersoid and a liquid phase dispersion medium to pass through the suction pump mechanism section,
The suction pump mechanism section,
The wing chamber,
A discharge port formed on the outer wall portion of the blade chamber, the discharge port including an opening connected to a discharge flow path through which the mixed fluid is discharged,
It has a plurality of rotary blades that are driven to rotate about a predetermined rotation axis and move inside the blade chamber,
The movement in the interior of the wing chambers of said plurality of rotating blades, the fluid space when the plurality of the plurality of fluid space defined by the rotating blades and the outer wall portion is rotated and moved, in communication with the discharge port To discharge the mixed fluid from the discharge port,
In the view of the direction in which the predetermined rotation axis extends, the opening of the outer wall portion of the blade chamber that is the discharge port that connects the blade chamber and the discharge flow path is at least downstream with respect to the rotation direction of the plurality of rotary blades. Distributed system with chamfered parts . A control unit that controls the operation of the suction pump mechanism unit is configured such that the pressure of the mixed fluid in the discharge flow channel when the fluid space communicates with the discharge flow channel becomes equal to or lower than the saturated vapor pressure of the liquid phase dispersion medium. The dispersion system according to claim 1, wherein the number of rotations of the plurality of rotary blades is set to . The dispersion system according to claim 1 or 2 , wherein the chamfer provided on the opening of the outer wall portion is an R chamfer having a radius of 2 mm or more. Each of the plurality of rotor blades extends from the downstream side to the upstream side with respect to the rotation direction of the plurality of rotor blades as it extends toward the outer wall portion of the blade chamber when viewed in the direction in which the predetermined rotation axis extends. 4. The chamfer is provided on the upstream side of the end portions of the plurality of rotor blades on the outer wall portion side with respect to the rotation direction. A distributed system according to item. A dispersion system comprising a suction pump mechanism section, which allows a mixed fluid of a dispersoid and a liquid phase dispersion medium to pass through the suction pump mechanism section,
The suction pump mechanism section,
The wing chamber,
A discharge port formed on the outer wall portion of the blade chamber, the discharge port including an opening connected to a discharge flow path through which the mixed fluid is discharged,
It has a plurality of rotary blades that are driven to rotate about a predetermined rotation axis and move inside the blade chamber,
The movement in the interior of the wing chambers of said plurality of rotating blades, the fluid space when the plurality of the plurality of fluid space defined by the rotating blades and the outer wall portion is rotated and moved, in communication with the discharge port To discharge the mixed fluid from the discharge port,
Each of the plurality of rotor blades extends from the downstream side to the upstream side with respect to the rotation direction of the plurality of rotor blades as it extends toward the outer wall portion of the blade chamber when viewed in the direction in which the predetermined rotation axis extends. A dispersion system that is provided so as to be inclined, and that is chamfered on the upstream side with respect to the rotation direction among the ends of the plurality of rotor blades on the outer wall side . A control unit that controls the operation of the suction pump mechanism unit is configured such that the pressure of the mixed fluid in the discharge flow channel when the fluid space communicates with the discharge flow channel becomes equal to or lower than the saturated vapor pressure of the liquid phase dispersion medium. The dispersion system according to claim 5, wherein the number of rotations of the plurality of rotary blades is set to . The dispersion system according to claim 4, wherein the chamfer provided on the plurality of rotor blades is an R chamfer having a radius of 2 mm or more. Distributed system according to the discharge flow path, any one of claims 1 to 7 extending in the tangential direction of the outer wall portion is cylindrical. Each of the plurality of rotor blades extends from the downstream side to the upstream side with respect to the rotation direction of the plurality of rotor blades as it extends toward the outer wall portion of the blade chamber when viewed in the direction in which the predetermined rotation axis extends. Is provided so as to incline, and the angle formed by the inclination angle of the plurality of rotor blades inclining toward the outer wall portion of the blade chamber and the moving direction of the plurality of rotor blades is 10 ° or more and 80 °. The distributed system according to any one of claims 1 to 8 , which is the following. Each of the plurality of rotor blades extends from the downstream side to the upstream side with respect to the rotation direction of the plurality of rotor blades as it extends toward the outer wall portion of the blade chamber when viewed in the direction in which the predetermined rotation axis extends. is provided so as to be inclined Te, the angle between the inclination angle and the moving direction of the plurality of rotor blades of the plurality of rotor blades is inclined him to toward the outer wall of the blade chamber is greater than 0 ° 31 The distributed system according to any one of claims 1 to 8 , which is equal to or less than °. A front wall portion fixed to the suction pump mechanism portion and a rotor rotatably driven about the predetermined rotation axis by a motor are provided in order along the extending direction of the predetermined rotation axis. The introduction chamber to which the mixed fluid is supplied is formed between the front wall portion and the rotor,
Wherein the plurality of rotor blades is arranged on the outer periphery of the rotor,
The front wall portion has a first facing surface that is a smooth flat surface that is orthogonal to the predetermined rotation axis of the rotor and faces the rotor,
The rotor, perpendicular to the predetermined axis of rotation of the rotor, and have a second opposing face is a smooth plane opposing the first opposing face,
The space between the first opposing face and the second opposing surface, said that form part of the supply chamber, distributed system according to any one of claims 1 to 10.