JP7111400B1 - Disperser - Google Patents

Abstract

A media-type dispersing machine capable of high-speed processing of an object to be dispersed while maintaining a uniform distribution of media in a container is provided. SOLUTION: The disperser comprises a rotating shaft 3, a plurality of dispersing discs 20 attached to the rotating shaft 3 at intervals, and a centrifugal rotor 30 attached to the rotating shaft 3 so as to face a discharge section 6. there is Distributor disk 20 has a through hole 22 extending from the upstream side to the downstream side. The centrifugal rotor 30 includes a large-diameter portion 32 having an outer diameter larger than the outer diameter of the rotor 31 at one end on the discharge portion side of the cylindrical rotor 31 , and a rotor of the large-diameter portion 31 on the outer peripheral side of the large-diameter portion 32 . and a through hole 34 penetrating in the thickness direction of the large-diameter portion 32 between the rotor 31 and the surrounding portion 33 in the radial direction of the large-diameter portion 32 . have. [Selection drawing] Fig. 1

Description

In the process of manufacturing paints, inks, pharmaceuticals, cosmetics, foodstuffs, batteries, electronic components, and the like, the present invention can be applied while supplying an object to be dispersed and mixing it with media that has already been put into a container. It relates to a media-type disperser for dispersing or pulverizing.

As a conventional dispersing machine, a media-type dispersing machine is known that disperses, agitates, or pulverizes an object to be dispersed using media (for example, beads of glass, zirconia, etc.). For example, a disperser equips a rotating shaft in a container with a plurality of discs for dispersing at equal intervals. The disk has a plurality of protruding pieces on its outer circumference and a through hole penetrating in the thickness direction. The through-hole obliquely penetrates the disk in the thickness direction from the upstream side to the downstream side in the same direction as the disk rotation direction. With this configuration, the conventional disperser is configured to return part of the object to be dispersed and the media flowing downstream from between the disc and the container from the downstream surface of the through-hole to the upstream surface ( See Patent Document 1).

Patent No. 6634493

However, the dispersing machine described in Patent Document 1 has the following problems. First, since the force to return the media to the upstream surface of the disk through the through-holes of the disk is slightly stronger than the flow of the object to be dispersed passing through the through-holes, Only the media near the opening of the through hole on the side surface can be returned to the upstream surface.

In addition, when the supply amount of the unprocessed material to be dispersed into the container per short period of time is increased in order to process a large amount of material to be dispersed at high speed, the force for pumping the material to be dispersed increases. That is, the flow of the object to be dispersed passing through the through-holes becomes stronger than the force that returns the media to the upstream side through the through-holes, and the media is not only unevenly distributed downstream and blocks the discharge port, but also the media reaches the discharge port. Since the motion is hindered by the stagnation, the shear (shear speed) due to the speed difference between the media and the action of atomization (dispersion) of the dispersed object due to the collision between the media cannot be obtained. That is, there is a trade-off relationship between an increase in the supply amount of the object to be dispersed and the processing capacity, and there is an inconvenience that the production efficiency cannot be improved.

SUMMARY OF THE INVENTION The present invention has been made to solve such problems, and an object of the present invention is to provide a dispersing machine capable of processing a large amount of objects to be dispersed at high speed while maintaining uniform distribution of media in a container. .

The present invention provides a dispersing machine as follows.

That is, it is a media-type dispersing machine that disperses together with the media while feeding the media in the container and the material to be dispersed, which is introduced from the charging section provided on the upstream side of the container, toward the discharging section provided on the downstream side,
a rotating shaft;
a plurality of dispersing discs mounted in spaced relation to the rotating shaft;
a centrifugal rotor attached to the rotating shaft so as to face the discharge unit on the downstream side of all of the plurality of dispersion disks;
The dispersing disc has a through hole extending from the upstream side to the downstream side,
The centrifugal rotor has a cylindrical rotor main body , a large-diameter portion having an outer diameter larger than the outer diameter of the rotor main body at one end of the rotor main body on the downstream side, and an outer peripheral side of the large-diameter portion. an outer peripheral portion projecting upstream so as to surround the rotor main body ; a through hole formed in the large-diameter portion so as to pass therethrough;
A disperser, wherein the large-diameter portion and the downstream side of the dispersion disk face each other across the rotor body in the thickness direction of the large-diameter portion.

According to this configuration, the media and the object to be dispersed that have been put into the container flow downstream along the inner peripheral wall of the container while being dispersed by the centrifugal force generated by the rotation of the plurality of dispersion disks. A centrifugal rotor mounted on a rotating shaft facing the discharge section downstream of all of the plurality of dispersing discs generates an agitating flow. The stirring flow returns the object to be dispersed and the media contained in the object to be dispersed to the upstream side along the end surface and the inner peripheral wall of the container from the discharge part side. This stirring flow collides with the flow of the object to be dispersed, which is about to pass between the dispersion disk and the inner peripheral wall of the container, which face each other across the rotor in the thickness direction of the large-diameter portion of the centrifugal rotor. This collision prevents the object to be dispersed from entering between the container and the stirring disk, and changes the course of the object to be dispersed. That is, the object to be dispersed is changed in course by the rotating shaft so as to pass through the through-hole formed in the dispersion disk, which is allowed to flow downstream, and passes through the through-hole.

Since the agitated flow includes the media that has reached the discharge section and returns upstream, it is possible to prevent the media from being unevenly distributed and clogging the discharge section. In addition, in the collision area of the agitation flow and the flow of the object to be dispersed, the media collide with the edge of the outer circumference of the dispersion disk and actively move while the object to be dispersed is being agitated by the rotation of the dispersion disk. The effect of making the object to be dispersed into fine particles by shearing due to the speed difference and collision between media can be obtained efficiently. In other words, the centrifugal rotor can improve the dispersion efficiency by returning the media upstream, and can efficiently discharge the objects to be dispersed after treatment. It can increase the throughput of things.

In the above configuration, the outer peripheral portion may be formed with a groove extending from the upstream side to the downstream side along the outer peripheral surface.

With this configuration, the frictional resistance between the groove and the dispersion object increases, so the centrifugal rotor can generate a more powerful stirring flow.

In the above configuration, the rotor main body of the centrifugal rotor preferably has a plurality of grooves extending from upstream to downstream along the outer peripheral surface. It is more preferable to configure them so that they communicate with each other.

According to this configuration, the object to be dispersed that has passed through the through-hole of the dispersion disk can be stirred by the grooves formed in the rotor (for example, the cylindrical or truncated cone-shaped rotor). Since the agitating force of the rotor is smaller than that of the dispersing disc and the large diameter part of the centrifugal rotor, it does not impede the downstream flow of the object to be dispersed and gives a slight centrifugal force to the media contained in the object to be dispersed. Generate a stirring flow to the extent that This stirred flow merges with the stirred flow flowing along the inner peripheral wall of the container 2 . Therefore, the agitated flow reaching the collision area is a combination of two agitated flows, and both of the agitated flows contain the media, so that the clogging of the discharge section by the media can be suppressed more reliably. can. Note that the term “communication” means that, when viewed from the axial direction of the rotating shaft, the downstream opening of the through-hole of the dispersion disk is formed on the outer peripheral surface of the dispersion rotor in a state in which it is in contact with the upstream end surface of the dispersion rotor. means at least partially overlapping with the groove that was created.

The present invention provides a dispersing machine capable of processing objects to be dispersed at high speed while maintaining a uniform distribution of media in a container.

BRIEF DESCRIPTION OF THE DRAWINGS It is sectional drawing which shows schematic structure of the dispersing machine which concerns on embodiment of this invention. FIG. 4 is a perspective view from the upstream side of the dispersing rotor; FIG. 4 is a perspective view from the downstream side of the dispersing rotor; It is a front view of a dispersion disk. 1 is a front view of a centrifugal rotor; FIG. Fig. 2 is a rear view of a centrifuge rotor; It is a perspective view from the upstream of a centrifugal rotor. FIG. 4 is a perspective view from the downstream side of the centrifugal rotor; FIG. 4 is a schematic diagram showing the flow of objects to be dispersed and the movement of media during dispersion processing in the dispersion machine of the embodiment. It is a sectional view showing a schematic structure of a dispersion machine of a modification. It is a front view of a stirring rotor. It is a perspective view from the front of the centrifugal rotor of a modification. It is a front view of a centrifugal rotor of a modification. It is a sectional view showing a schematic structure of a dispersion machine of a modification.

<Embodiment>
An embodiment of a media-type dispersing machine according to the present invention will be described in detail below with reference to the drawings. In the dispersing machine of the present embodiment, a dispersing machine (for example, a bead mill) that mixes and disperses an object to be dispersed using, for example, zirconia beads as a medium will be described. It can also be used as a pulverizer for finely crushing the target material. Beads are an example of media, and are appropriately selected according to the type of object to be dispersed, particle hardness, particle size, viscosity and specific gravity of the solvent (raw material paste) to be added, and the like.

The dispersing machine 1 is a horizontal dispersing machine, as shown in FIG. This dispersing machine 1 comprises a container 2 and a rotating shaft 3, to which a plurality of dispersing rotors 4, a plurality of dispersing discs 20 and one centrifugal rotor 30 are attached.

The container 2 is a substantially closed cylindrical tank. One end face of the container 2 has an input part 5 into which the object to be dispersed is placed, and the other end face opposite to this end face has a discharge part 6 .

The input part 5 is configured by connecting a supply pipe 7 that communicates with the inside of the container 2 . The supply pipe 7 is connected to an upstream side thereof, such as a pump for pumping the object to be dispersed.

The discharge section 6 is composed of a gap separator 8 and a discharge pipe 9 . The gap separator 8 is for separating the media contained in the treated dispersion object that has been pumped inside the container and reached the most downstream and objects other than the treated dispersion object (for example, media fragments, etc.). It is. That is, the gap separator 8 is composed of a rotating rotor 10 provided on the rotating shaft 3 and a fixed stator 11 surrounding the outer periphery of the rotating rotor 10 . By adjusting the gap between the rotating rotor 10 and the fixed stator 11, media and the like are prevented from passing through the gap. Note that the gap separator 8 is an example of the present embodiment, and may be any device as long as it can separate the media and the object to be dispersed. For example, it may be a screen mechanism.

The discharge pipe 9 discharges the material to be dispersed separated by the gap separator 8 to the outside of the disperser 1 . In this embodiment, it is composed of a mechanical seal 12 that rotatably supports the rotating shaft 3 and a fixed wall 13 that fixes the mechanical seal 12 .

Note that the container 2 has a jacket 14 on its outer periphery. The jacket 14 adjusts the temperature inside the container 2 by supplying and circulating a coolant, hot water, or the like in a flow path formed inside the jacket 14 .

The rotary shaft 3 is inserted through the container 2 from the discharge section side through the mechanical seal 12 and extends to the input section side. That is, the rotary shaft 3 is cantilevered on the discharge section side. Further, the rotating shaft 3 is directly or indirectly connected to a drive source such as a motor (not shown) on the base end side, and its rotation is controlled via a controller.

The dispersing rotor 4, dispersing disk 20 and centrifugal rotor 30 are attached to the rotating shaft 3 as follows. First, the dispersing disk 20 is attached to the rotating shaft 3 at intervals. That is, the dispersing discs 20 are alternately attached in the order of the dispersing discs 20 and the dispersing rotor 4 from the tip (upstream side) of the rotating shaft 3, and one dispersing rotor 4 is attached to the two dispersing discs 20 from the upstream side and the downstream side. sandwiched between The centrifugal rotor 30 is attached to the rotating shaft 3 so as to face the discharge section 6 on the downstream side of all of the plurality of dispersion disks 20 (most downstream side in FIG. 1).

The dispersing rotor 4 has a truncated cone shape, as shown in FIGS. A plurality of grooves 15 are formed on the outer peripheral surface of the dispersing rotor 4 . The groove 15 extends from the upstream side to the downstream side of the outer peripheral surface. Furthermore, the grooves 15 are formed on the outer circumference of the dispersion rotor 4 at regular intervals. Each of the plurality of dispersing rotors 4 has an end portion with a large outer diameter facing upstream, and when the dispersing rotors 4 are attached to the rotating shaft 3 in series, the dispersing rotor 4 on the upstream side has a smaller outer diameter than the distributing rotor 4 on the downstream side. The large outer diameter of the dispersing rotor 4 is configured to be large. A through-hole 16 for attaching to the rotating shaft 3 is provided in the center of the dispersion rotor 4 .

As shown in FIG. 4, the dispersing disk 20 has a larger diameter than the outer diameter end of the dispersing rotor 4 and has a plurality of projecting pieces 21 on the outer circumference.

The projecting piece 21 has a substantially trapezoidal shape extending radially outward. The projecting piece 21 of this embodiment includes a first side 21a extending obliquely in a direction opposite to the rotation direction R of the dispersion disk 20, a second side 21b extending in the circumferential direction from the first side 21a, and a second side 21b extending from the second side 21b. It is composed of a third side 21 c extending toward the center of the dispersion disk 20 . Also, the first side 21a and the second side 21b are gently curved and smoothly continuous. Moreover, as for the adjacent projecting pieces 21, the third side 21c of one projecting piece 21 and the first side 21a of the other projecting piece 21 are smoothly continuous.

Further, through-holes 22 are formed in the dispersing disk 20 at positions slightly displaced from the projecting pieces 21 toward the center of the disk.

The through-holes 22 are holes for passing media and dispersion objects. The through-holes 22 of the present embodiment obliquely penetrate in the same direction as the rotation direction R of the dispersion disk 20 from the upstream surface to the downstream surface of the dispersion disk 20 . Further, each of the openings of the through holes 22 on the downstream side surface of the dispersing disk 20 is in contact with the end surface of the dispersing rotor 4 having a large outer diameter, and the plurality of grooves 15 formed on the outer peripheral surface of the dispersing rotor 4 are in contact with each other. overlap with each other. That is, the plurality of grooves 15 and the plurality of through holes 22 of the distribution disk 20 are configured to communicate with each other on the upstream side of the distribution rotor 4 .

A through hole 23 is formed in the center of the dispersing disk 20 for attachment to the rotating shaft 3 .

As shown in FIGS. 1 and 5 to 8, the centrifugal rotor 30 guides the object to be dispersed from the center to the most downstream side of the vessel end face, and part of the object to be dispersed that has reached the most downstream end face of the vessel 2 and It is configured to return to the upstream side along the inner peripheral wall. The centrifugal rotor 30 includes a large-diameter portion 32 having an outer diameter larger than that of the rotor 31 at one end on the discharge portion side of the cylindrical rotor 31 , and an outer peripheral portion surrounding the rotor 31 on the outer peripheral side of the large-diameter portion 32 . 33 , and a through hole 34 passing through the large-diameter portion 32 in the thickness direction between the rotor 31 and the surrounding portion 33 .

The rotor 31 is cylindrical and has a diameter that partially covers the through hole 22 formed in the dispersion disk 20 . That is, the rotor 31 has its upstream end surface in contact with the downstream side surface of the dispersion disk 20 . The rotor 31 is formed with a plurality of grooves extending from upstream to downstream along its outer peripheral surface.

The grooves 35 are formed on the outer peripheral surface of the rotor 31 at the same intervals as the through holes 22 of the dispersion disk 20 so as to communicate with the through holes 22 . Further, the groove 35 is formed from the dispersing disk 20 to the front of the later-described stirring block 33A.

The large-diameter portion 32 has an upstream surface facing the downstream surface of the dispersing disk 20 with the rotor 31 interposed therebetween, and a downstream surface of the large-diameter portion 32 facing the end surface of the container 2 on the discharge portion side. is configured to That is, the outer diameter of the large diameter portion 32 is substantially the same as the outer diameter of the dispersing disk 20 , and the gap between the inner peripheral wall of the container 2 and the large diameter portion 32 is substantially the same as the gap between the inner peripheral wall of the container 2 and the dispersing disk 20 . are the same.

The large-diameter portion 32 includes a flat portion 32A having the same diameter as the rotor 31 and an inclined portion 32B slightly inclined upstream from the flat portion 32A toward the outer circumference. At the center of the downstream surface of the large-diameter portion 32, there is formed a recess 32C into which the tip of the rotary rotor 10 of the gap separator 8 is fitted and connected. Further, a through hole for attaching to the rotating shaft 3 is formed in the center of the recess 32C.

The inclination angle of the inclined portion 32B is the same as the inclination angle of the end surface of the container 2, or is appropriately adjusted so that the gap between the end surface of the container 2 and the inclined portion 32B gradually widens from the rotating shaft 3 toward the inner peripheral wall of the container 2. set.

A ring-shaped groove 36 having a diameter surrounding the outer circumference of the rotor 31 is formed in the thickness direction between the flat portion 32A and the inclined portion 32B.

Small grooves 37 are formed at equal intervals in the inclined portion 32B so as to communicate with the ring-shaped groove 36 formed in the plane portion 32A and the small grooves 38 formed between adjacent surrounding portions 33 .

As shown in FIG. 7, the surrounding part 33 is composed of a plurality of agitating blocks 33A projecting upstream from an upstream surface opposite to the inclined part 32B (downstream surface). That is, as shown in FIGS. 7 and 8, the stirring blocks 33A are provided at equal intervals on the upstream side surface of the inclined portion 32B and have a substantially fan shape. A large groove 39 is formed on the outer surface of the stirring block 33A. Furthermore, the stirring block 33A has a tapered inner surface facing the rotor 31 . That is, the stirring block 33A has a wide gap with the rotor 31 on the upstream side and narrows toward the downstream side.

The through hole 34 is for sending out the object to be dispersed toward the discharge portion 6 , and is located between the rotor 31 of the large diameter portion 32 and the surrounding portion 33 in the radial direction of the large diameter portion 32 . 32 penetrates in the thickness direction. Furthermore, the through hole 34 communicates with a ring-shaped groove 36 formed on the downstream side surface of the large diameter portion 32 . Although the through hole 34 is an arcuate long hole in the present embodiment, it is not limited to this shape, and the shape and size such as an ellipse or a circle can be appropriately changed.

<Description of operation>
Next, the operation of the dispersing machine 1 having the above configuration will be described.

An object to be dispersed is started to be introduced from the supply pipe 7 into the container 2 into which the medium has been introduced in advance. The object to be dispersed, which is pumped downstream by the pump, is agitated and dispersed by the rotation of the plurality of dispersing rotors 4 and the plurality of dispersing discs 20 in the process of flowing downstream. At this time, as shown in FIG. 9 , the object to be dispersed passes through a large flow (hereinafter referred to as “main stream”) along the inner peripheral wall of the container 2 and the through holes 22 of the dispersing disk 20 . It consists of a small stream (hereinafter appropriately referred to as a "side stream") that Here, the flow velocity of the dispersed object is faster in the main stream than in the side stream.

In this embodiment, due to the cooperation of the dispersing rotor 4 and the dispersing discs 20 during the dispersing process, the area between the inner peripheral wall of the container 2 and the outer circumference of each dispersing disc 20 in the main flow (hereinafter referred to as a "dispersion area" as appropriate) ), media M are uniformly distributed.

First, since each of the dispersing rotors 4 smaller in outer diameter than the dispersing disk 20 has a tapered outer circumference that increases in outer diameter toward the loading section side, the outer diameter Circumferential speed gradually increases toward the end with a large . At this time, the centrifugal force acting on the objects to be dispersed and the media M due to the frictional resistance with the grooves 15 during the rotation of the dispersion rotor 4 continuously acts between the adjacent dispersion disks 20 .

Therefore, apart from the centrifugal force due to the difference in peripheral speed generated on the outer circumference of the tapered dispersing rotor 4, there is a force (a component force of the centrifugal force) that returns the media M existing around each of the tapered dispersing rotors 4 to the upstream side. acts continuously. In addition, the media M existing between the adjacent dispersing disks 20 moves upstream while resisting the side flow of the object to be dispersed passing through the through-holes 22 of the dispersing disks 20 with a slight force. The accompanying centrifugal force draws most of it in rotation to the upstream distribution area where the inner peripheral wall of the vessel 2 and the outer diameter of each dispersing rotor 4 are the largest. Due to the movement of the media M between the adjacent dispersion disks 20, the media M continue to rotate while spreading radially from the dispersion disks 20 toward the inner peripheral wall of the container 2 in each dispersion area. That is, the media M are evenly distributed in each distributed area.

When the object to be dispersed forming the main stream reaches the dispersing disk 20 rotating together in contact with the upstream end face of the centrifugal rotor 30, the course is changed from the inner peripheral wall side of the container 2 to the rotating shaft side, and dispersed. It passes through the through holes 22 of the disk 20 . That is, the centrifugal rotor 30 rotates to generate an agitated flow returning upstream along the end surface and inner peripheral wall of the container 2 from the discharge part side, and dispersing the flow to pass between the dispersing disk 20 and the inner peripheral wall of the container 2 . The object to be dispersed is prevented from entering from between the container 2 and the dispersing disk 20 by causing the agitated flow to collide with the main stream of the object. That is, the flow of the main stream is changed by the impingement of the agitated stream.

The agitated flow that collides with the main stream of the object to be dispersed is a mixture of the agitated flow generated by the large-diameter portion 32 and the surrounding portion 33 of the centrifugal rotor 30 and the agitated flow generated by the cylindrical rotor 31 .

The stirring flow generated by the rotation of the large-diameter portion 32 and the outer peripheral portion 33 returns the media M contained in the objects to be dispersed to the upstream side along the inner peripheral wall of the container 2 before the gap separator 8 . It has a return force greater than the pressure of the main flow of the object to be dispersed that is about to pass between the peripheral wall and the dispersing disk 20 on the most downstream side. This return force is adjusted by the feeding amount of the dispersed object and the rotation speed (rpm) of the centrifugal rotor 30 .

The churning flow produced by the rotation of the cylindrical rotor 31 is produced by the frictional resistance between the grooves 35 formed in the rotor 31 and the object to be dispersed. This stirring flow is set to be smaller than the flow of the object to be dispersed passing through the through-holes 22 of the dispersing disk 20 . In other words, centrifugal force is applied to the media M passing through the through-holes 22 of the dispersing disk 20 without preventing the objects to be dispersed that have passed through the dispersing disk 20 from passing through the through-holes 34 of the centrifugal rotor 30, The media M are fed into the agitated flow flowing along the inner peripheral wall of the container 2 .

Therefore, the agitated flow that collides with the main flow includes the media M that have reached the discharge section side, and the collision area is also the dispersion area on the outer circumference of the dispersion disk 20 . Therefore, the media that have reached the discharge section side are reliably returned to the upstream dispersion area.

Only the object to be dispersed from the media M separated by the agitated flow passes through the gap separator 8 and is discharged from the discharge section 6 to the outside of the disperser 1 .

According to the dispersing machine 1 configured as described above, the cooperation of the dispersing rotor 4 and the dispersing disk 20 continuously generates a force to return the media M to the upstream side. The media M can be moved to the dispersion area on the outer peripheral side of each dispersion disk 20 without disturbing the main flow, and distributed processing of the objects to be dispersed can be continuously performed while the media M are uniformly distributed.

Moreover, since the dispersing rotor 4 is provided between the dispersing discs 20 adjacent to each other, the distance between the dispersing discs is increased. Therefore, the dispersing disc 20 efficiently disperses the frictional heat generated when the object to be dispersed is sheared. Therefore, it is possible to suppress deterioration of physical properties of the object to be dispersed due to frictional heat.

Furthermore, the disperser 1 collides with the main flow, which is about to pass through the gap between the inner peripheral wall of the container 2 and the dispersing disk 20, on the most downstream side with the agitated flow generated by the centrifugal rotor 30. To suppress the passage of an object and change its course to the rotating shaft side. Thereafter, the dispersing machine 1 causes the object to be dispersed to pass through the through-holes 22 of the dispersing disk 20 and the through-holes 34 of the centrifugal rotor 30 and is discharged from the gap separator 8 . The media M that has reached up to the point can be returned to the distributed area of the distributed disk 20 . Therefore, clogging of the gap separator 8 by the media M is suppressed, so that the discharge efficiency of the dispersed object is enhanced. The synergistic effect of the dispersing machine 1 having the above configuration can increase the processing amount of the dispersed object per unit time.

Although the preferred embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and various design changes are possible within the scope of the claims.

(1) In the dispersing machine 1 configured as described above, a configuration in which a stirring rotor is provided at the tip of the rotary shaft 3 may be employed. As shown in FIGS. 10 and 11, the stirring rotor 40 has a plurality of pins 42 provided at regular intervals along the outer circumference and axial direction of a cylindrical rotor 41 . That is, the pins 42 of the second row are positioned between the pins 42 of the first row on the tip side of the shaft, and the positions of the pins 42 of the first row and the pins 42 of the second row do not overlap in the axial direction. there is

According to this configuration, the media M, which tends to stay at the center of rotation on the upstream side, collides with the pins 42 due to the rotation of the stirring rotor 40 and is flipped off toward the mainstream. Therefore, all of the media M put into the container 2 can be used for distributed processing.

(2) In the dispersion machine 1 having the above configuration, the centrifugal rotor 30 may be configured as follows. As shown in FIGS. 12 and 13, the centrifugal rotor 300 includes a large-diameter portion 320 having an outer diameter larger than that of the rotor 310 and a large-diameter portion 320 at one end of the truncated conical rotor 310 on the discharge side. and a through-hole 340 penetrating in the thickness direction of the large-diameter portion 32 between the rotor 310 and the surrounding portion 330 .

The truncated cone rotor 310 has a truncated cone shape that tapers toward the upper surface of one end on the upstream side. The upstream surface of the truncated conical rotor 310 is set to have a diameter that overlaps with the through hole 22 formed in the dispersion disk 20 and is in contact with the downstream surface of the dispersion disk 20 .

The downstream side surface of the large-diameter portion 320 has a curved shape protruding toward the discharge portion 6 . That is, the gap between the end surface of the container 2 and the downstream side surface is set to gradually widen from the center of the rotating shaft 3 toward the inner peripheral wall of the container 2 .

Enveloping portion 330 is composed of a plurality of blades erected from the upstream surface of large-diameter portion 320 toward the upstream side. That is, the blades are provided at regular intervals on the upstream side surface of the large-diameter portion 320 and have a tapered shape in which the thickness decreases toward the front end in the rotation direction when viewed from the front in the axial direction. Enclosure 330 has a substantially parallelogram shape when viewed from the side, and each of the front end and the rear end in the rotational direction is slanted backward from the proximal end to the distal end of large diameter portion 320 .

The through-hole 340 is for sending out the object to be dispersed toward the discharge part 6, and penetrates in the thickness direction of the large-diameter part 320 between the truncated cone-shaped rotor 310 and the blades. In the present embodiment, the through-hole 34 is an arcuate elongated hole having a length substantially equal to the width of the blade, but is not limited to this shape, and can be appropriately changed to an elliptical shape, a circular shape, or the like. be.

According to this configuration, the centrifugal rotor 300 can generate an agitated flow that collides with the main flow that is about to pass through the gap between the inner peripheral wall of the container 2 and the dispersion disk 20, like the centrifugal rotor 30 of the above-described embodiment. . This stirring flow also returns the media M that has reached the gap separator 8 to the upstream side together. Therefore, clogging of the gap separator 8 by the media M can be suppressed, and the media M returned by the stirring flow can be reused in the dispersion area of the dispersion disk 20 .

The downstream side surface of the large-diameter portion 320 may have a configuration in which a ring-shaped groove or a plurality of grooves are formed radially from the center side, as in the above-described embodiment. The number and size of the grooves can be appropriately set and changed according to the physical properties of the object to be stirred and the size of the container 2 .

Further, grooves may be provided on the outer peripheral surface of the truncated cone-shaped rotor 310 . In this case, as in the above-described embodiment, the upstream surface of the truncated conical rotor 310 is in contact with the downstream surface of the dispersing disk 20 and part of the through hole 22 formed in the dispersing disk 20 . The groove of the truncated conical rotor 310 and the through-hole 22 may communicate with each other.

(3) In the dispersing machine 1 of each of the embodiments described above, the dispersing disk 20 and the centrifugal rotor 30 arranged on the most downstream side are configured individually, but they may be integrally molded. Even with this configuration, the same functions and effects as those of the dispersing machine 1 of the above-described embodiment are produced.

(4) In the dispersing machine 1 configured as described above, the through holes 22 formed in the dispersing disk 20 may be formed vertically from the upstream side surface to the downstream side surface, or It may be formed so as to obliquely penetrate in the direction opposite to the rotation direction R of the dispersion disk 20 toward the surface on the downstream side. Furthermore, the through hole 22 may be an ellipse or an elongated hole in addition to the circular shape.

(5) In the disperser 1 configured as described above, the dispersing rotor 4 is not limited to a truncated cone shape. For example, the distribution rotor 4 may be cylindrical. In this case, the outer circumference of the dispersion rotor may be roughened, or a plurality of grooves extending in the direction from upstream to downstream along the outer peripheral surface of the dispersion rotor 4 may be formed at equal intervals in the same manner as in the above embodiment. and the through holes 22 of the dispersion disk 20 may be communicated with each other.

(6) The dispersing machine 1 of each of the embodiments described above may be configured without the dispersing rotor 4 . For example, as shown in FIG. 14, the dispersing rotor 4 may be removed from the structure of the dispersing machine 1 shown in FIG.

(7) The dispersing machine 1 of each of the above embodiments has been described as a horizontal type in which the rotating shaft 3 is horizontally held in a cantilever manner, but it can also be used as a vertical type in which the rotating shaft 3 is vertical or inclined.

1 Disperser 2 Container 3 Rotating Shaft 4 Dispersing Rotor 5 Input Portion 6 Discharge Portion 7 Supply Pipe 8 Gap Separator 9 Discharge Pipe 15 Groove 20 Dispersion Disk 21 Protruding Piece 22 Through Hole 30 Centrifugal Rotor 31 Rotor 32 Large Diameter Portion 33 Surrounding Portion 33A Stirring block 34 Through hole 35 Groove

Claims (4)

A media-type dispersing machine that disperses together with the media in the container and the object to be dispersed, which is fed from the loading unit provided on the upstream side of the container and the material to be dispersed, toward the discharging unit provided on the downstream side,
a rotating shaft;
a plurality of dispersing discs mounted in spaced relation to the rotating shaft;
a centrifugal rotor attached to the rotating shaft so as to face the discharge unit on the downstream side of all of the plurality of dispersion disks;
The dispersing disc has a through hole extending from the upstream side to the downstream side,
The centrifugal rotor has a cylindrical rotor main body , a large-diameter portion having an outer diameter larger than the outer diameter of the rotor main body at one end of the rotor main body on the downstream side, and an outer peripheral side of the large-diameter portion. an outer peripheral portion projecting upstream so as to surround the rotor main body ; a through hole formed in the large-diameter portion so as to pass therethrough;
A disperser, wherein the large-diameter portion and the downstream side of the dispersion disk face each other across the rotor body in the thickness direction of the large-diameter portion. The disperser according to claim 1, wherein the outer peripheral portion is formed with a groove extending from the upstream side to the downstream side along the outer peripheral surface. The disperser according to claim 1 or 2, wherein the rotor main body of the centrifugal rotor is formed with a plurality of grooves extending from upstream to downstream along the outer peripheral surface. 4. The disperser according to claim 3, wherein the plurality of grooves of the centrifugal rotor and the plurality of through holes of the dispersing disk are configured to communicate with each other.

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