JP3978069B2 - Bead processing apparatus and processing object dispersion machine - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a bead separating apparatus and a target that are provided in a processing object dispersing machine that stirs and disperses or pulverizes beads in a processing object such as a suspension (turbid liquid), and that can separate the beads from the processing object. The present invention relates to a processed material dispersing machine.
[0002]
[Prior art]
In conventional bead mills, beads as media are brought into contact with a suspension (turbid liquid) to disperse or pulverize the suspension. However, there is a tendency to reduce the diameter of the beads in order to improve the dispersibility of the bead mill.
[0003]
However, when the beads are reduced in diameter, the beads are easily flowed by the suspension inside the bead mill, and a large amount of beads are congested with the suspension near the mesh or slit of the separation mechanism provided in advance inside the bead mill. For this reason, beads adhere to the mesh or slit of the separation mechanism and bite occurs, and the gap of the mesh or slit of the separation mechanism is closed. As a result, there is a problem that the suspension flow inside the bead mill is deteriorated and operation is impossible.
[0004]
On the other hand, in order to effectively prevent bead biting in the separation mechanism, the mesh or slit interval of the separation mechanism is set to 1/3 or less of the bead diameter. However, if this gap is set narrow, pressure loss increases. There is a problem.
[0005]
Further, as shown in FIG. 4, a conventional bead mill 100 is provided with a rotating shaft 102 inside the bead mill 100, and a screen portion 104 that rotates with the rotating shaft 102 and separates the beads from the suspension is attached to the tip of the rotating shaft 102. (See Japanese Utility Model No. 6-11084).
[0006]
In such a bead mill 100, in order to rotate the rotating shaft 102 at a high speed, the collision of the beads with the screen portion 104 causes the wear of the uneven screen portion 104 formed of a steel wire net, and the durability of the screen portion 104 is increased. There is a problem that decreases. Further, when the beads collide with the screen part 104, the worn parts of the screen part 104 are mixed with the suspension, and there is a problem that the quality as a product is lowered. Further, when the screen portion is damaged due to wear, it is difficult to separate the suspension and the beads, and there is a problem that the beads flow out together with the suspension.
[0007]
As shown in FIG. 5, a conventional bead mill 200 includes a centrifugal separation unit 204 that separates beads from a suspension by centrifugal force inside a dispersion chamber 202 (see JP 2001-46899 A). In such a bead mill 200, unlike the type in which the mesh portion is passed through the suspension, the beads can be separated from the suspension only by the centrifugal force generated by the rotation of the centrifugal separator 204.
[0008]
By the way, the bead mill 200 has a problem that the suspension and the beads cannot be stably separated because the separation effect of the beads is remarkably different due to changes in suspension conditions (viscosity, concentration, specific gravity, etc.).
[0009]
Further, as shown in FIG. 6, the conventional bead mill 300 is provided with a rotor 302 and a rotary disk 304 for dispersing the suspension. By rotating the rotor 302 and the rotary disk 304, the beads 306 are made into a suspension. There is one that contacts and disperses the suspension (see JP-A-8-206525). A slit separator 308 is attached to the rotor 302 for separating the beads 306 from the suspension when the suspension is taken out as a product. In the bead mill 300, the suspension is dispersed by rotating the rotary disk 304, and at the same time, the beads 306 can be separated from the suspension by rotating the slit separator 308, and only the suspension can be taken out.
[0010]
However, in the bead mill 300, the slit separator 308 and the rotary disk 304 are both attached to one rotating system 302, and the rotational speed of the rotor 302 is more advantageous when the rotational speed is relatively low. Therefore, there is a problem that it is not possible to sufficiently prevent the beads 306 from biting into the slit separator 308.
[0011]
[Problems to be solved by the invention]
Therefore, in view of the above fact, the present invention has a situation in which the bead bites into the gap portion by differentiating the positions of the outer edge of the outer protruding member and the outer edge of the inner protruding member and passing the object to be processed through the gap portion therebetween. It is an object of the present invention to provide a bead separation device and an object disperser that can be significantly reduced.
[0012]
[Means for Solving the Problems]
The present invention employs the following means in order to solve the above problems.
The bead separation device according to claim 1, a bead separation device for separating the beads from the used treatment object disperser to disperse the beads an object to be processed, the object to be processed after dispersion, rotatable A rotating member provided on the rotating member, an outer projecting member attached to the rotating member, and a gap between the outer projecting member and the outer projecting member. An inner protruding member having an outer edge located on the member side, a gap width of the gap is set smaller than a diameter of the bead, and the outer protruding member and the inner protruding member are alternately formed. It is characterized by including a separating member and a guiding portion that communicates with the gap portion and guides the object to be processed that has passed through the gap portion to the outside.
[0013]
In the bead separation device of the present invention, when the rotating member rotates, the outer protruding member and the inner protruding member attached to the rotating member rotate. For example By connecting the suction pump to the discharge port operate the suction pump, the treatment object that has been dispersed is moved toward the bead separation member with the beads. It is also possible to use a general method of connecting the processed material to the bead disperser inlet with a pump and pushing it.
Since the gap between the outer projecting member and the inner projecting member of bead separation member is formed, the object to be treated is brought into contact with the bead separation member with the beads, the beads can pass through the gap Instead, only the object to be processed passes through the gap. For this reason, beads are separated from the object to be processed. In addition, the to-be-processed object which passed the gap | interval part passes along a rotation part, is discharged | emitted outside from the pipe line via a mechanical seal part, and becomes a product.
As described above, according to the present invention, by changing the positions of the outer edge of the outer protruding member and the outer edge of the inner protruding member alternately and allowing the workpiece to pass through the gap therebetween, Compared with the case where the position of the outer edge of the protruding member is not different, a shape in which the bite of the beads is hard to occur physically becomes possible. Further, since the gap component rotates independently of the dispersing means, it is possible to operate at a rotation most suitable for bead separation regardless of the rotation of the dispersing means, and the processed material enters the vicinity of the gap. By reducing the existence probability around the gap portion of the bead , it is possible to greatly reduce the situation where the bead bites into the gap portion due to a synergistic effect with the shape of the gap configuration portion.
On the other hand, such a configuration can reduce the situation in which the beads bite into the gap portion, so that the gap width of the gap portion can be set wide to a certain extent. As a result, the pressure loss when the object to be processed passes through the gap can be reduced.
Further, by separating the passes only the processed product beads gap, as compared to the bead separation apparatus for separating beads only by centrifugal force as in the prior art, various conditions (viscosity of the workpiece, The influence of concentration, specific gravity, etc.) is reduced, and the separation performance can be stabilized. Furthermore, according to the bead separation device of the present invention, unlike the conventional technique in which the mesh or the like is rotated at a high speed, since the gap portion has a structure that can be configured by a wear-resistant member, the steel wire that easily wears, etc. There is no mesh or the like. As a result, it is possible to prevent a decrease in separation performance due to wear deterioration, and a large amount of wear such as a mesh due to collision of beads is not mixed with the object to be processed, thereby preventing deterioration of the quality of the object to be processed. be able to.
[0014]
In bead separation device according to claim 2, the distance difference between the outer edge of the outer edge and the inner projecting member of the outer projecting member, is set to be larger than the distance from the center of the bead to the outer edge of the bead It is characterized by.
[0015]
According to bead separation apparatus of the present invention, since it is set larger than the distance from the center distance difference bead the outer edge of the outer edge and inwardly projecting member of the outer projecting member to the outer edge of the bead at the outer projecting member A lot of beads can be flipped off. As a result, it is possible to further reduce the beads from entering the gap, it can be prevented as much as possible biting into the gap portion of the bead. Incidentally, this is the "distance from the center of the bead to the outer edge of the bead" when, when the distance from the center of the bead to each outer edge of the beads are different, means the largest distance.
[0016]
Moreover, in bead separation apparatus of the present invention, the gap width of the gap portion, characterized in that it is smaller than the diameter of the distance, i.e. the beads from the center of the bead to the outer edge of the bead.
[0017]
According to the bead separation device described above , the gap width of the gap is set smaller than the diameter of the beads .
However, in the bead separation device of the present invention, the gap width of the gap can be made larger than the conventional dimension taking into account the biting prevention, and the pressure loss can be reduced.
The “gap width of the gap” means the shortest distance between the outer projecting member and the inner projecting member. In addition, the “ bead diameter” in this case means the diameter that is the shortest distance when the bead diameters are different.
[0018]
The workpiece disperser according to claim 3 , wherein the workpiece disperser is configured to disperse the workpiece by bringing the workpiece into contact with the workpiece by a dispersing unit . A bead separation device is provided.
[0019]
According to the processing object dispersion machine of the present invention, since the bead separation device according to claim 1 or 2 is provided, it is possible to prevent the beads separated from the processing object after dispersion from biting into the gap, It is possible to prevent the flow of the object to be processed from stagnation. Further, by adopting such a configuration, it is possible to set a wide gap in the gap portion in a state where the biting of the beads is prevented, so that pressure loss can be reduced.
[0020]
In the workpiece disperser according to claim 4, the dispersion means includes a drive member that is rotatably provided, and a stirring member that is attached to the drive member and stirs the workpiece and the beads. The driving member and the rotating member are configured as separate members and operate independently .
[0021]
According to the processing object dispersing machine of the present invention, the dispersing means receives the stirring of the beads in the processing object as the stirring medium such as a rotary disk rotates. As a result, the object to be processed is dispersed.
Here, it is often advantageous to operate the stirring medium at a relatively low speed from the viewpoint of wear and heat generation, and a relatively high rotational speed is effective for the processed material separation apparatus.
Therefore, in the present invention, since the stirring medium and the rotating system of the workpiece separator can be made independent, each can be operated independently, so that the optimum number of rotations can be realized. As a result, it is possible to efficiently disperse the object to be processed and to prevent clogging of the beads between the gaps as much as possible.
[0022]
DETAILED DESCRIPTION OF THE INVENTION
Next, a bead separation device and an object dispersion machine according to an embodiment of the present invention will be described in detail with reference to the drawings.
[0023]
First, the whole structure of the to-be-processed object dispersion machine of this embodiment is demonstrated.
FIG. 1 shows a bead mill 10 (processing object disperser) of this embodiment.
[0024]
In the space 16, beads (processed products) 66 are stored in advance.
[0025]
A rotating shaft 26 (drive member) is inserted from one side surface to the inside of the cylindrical portion 16. The rotating shaft 26 is connected to driving means (not shown) such as a motor, and is rotated when the driving means is operated. A cylindrical portion 28 (diffusion member) is attached to the rotating shaft 26.
[0026]
Here, when the column portion 28 rotates together with the rotary shaft 26, the suspension (object to be processed) inside the cylindrical portion 22 and the beads 66 are agitated in the gap between the inner surface of the cylindrical portion 22 and the outer peripheral surface of the column portion 28. When the beads 66 collide with the suspension, the suspension is dispersed or pulverized.
[0027]
On the other hand, a bead separator 40 ( bead separator) for separating the beads 66 from the dispersed or crushed suspension is attached to the upper surface. The detailed configuration of the bead separator 40 will be described later.
[0028]
Here, the configuration of the bead separator 40 of the present invention will be described in detail.
[0029]
As shown in FIGS. 1 and 2, the bead separator 40 ( bead separation device) includes a rotatable shaft 44 (rotating member). Driving means (not shown) such as a motor is connected to the shaft 44. The shaft 44 is configured by a member different from the rotating shaft 26 and is operated independently.
[0030]
A pipe line is formed between the shaft 44 and the support members 46 and 50 via a mechanical seal or the like, and the suspension passes through the space 52 when the suspension is discharged.
[0031]
A bead separating member 57 for separating the beads from the suspension is attached to one end of the shaft 44. The bead separation member 57 is located inside the space portion 16 and rotates together with the shaft 44.
[0032]
As shown in FIG. 3A, the bead separating member 57 is formed in a columnar shape in appearance. On the outer periphery of the bead separating member 57, an enlarged ring 58 (outside protruding member) having a relatively large diameter and a reduced diameter ring 60 (inside protruding member) having a relatively small diameter are vertically oriented (arrows in FIGS. 2 and 3). (Direction A) are alternately formed. Further, as shown in FIG. 3A, the diameter-expanding ring 58 and the diameter-reducing ring 60 are not in close contact with each other, but a slit 62 (gap portion, not shown in FIGS. 1 and 2) through which only the suspension is passed. ) Is formed through. Thus, in the bead separation member 57, each ring is formed in a stepped shape. A mechanical seal (not shown) is provided between the bead separating member 57 and the support member 50 to prevent the beads 66 from leaking.
[0033]
A plurality of suspension inflow holes 64 (guide portions) extending along the axial direction of the bead separation member 57 are formed inside the bead separation member 57. The suspension inflow hole 64 communicates with the space 52 and the slit 62. Note that an opening communicating with the suspension inflow hole 64 is not formed on the bottom surface of the bead separating member 57.
[0034]
Here, as shown in FIG. 3A, the radial difference D between the diameter-expanded ring 58 and the diameter-reduced ring 60 is set to be larger than ½ of the bead diameter of the spherical bead 66. .
[0035]
Further, the gap width H of the slit 62 is set to be smaller than the bead diameter. The gap width H of the slit 62 means the shortest separation distance between the diameter-expanded ring 58 and the diameter-reduced ring 60 that are adjacent in the vertical direction through the slit 62.
[0036]
In the present embodiment, the bead separation member 57 of the bead separator 40 is formed in a cylindrical shape, and the expanded diameter ring 58 and the reduced diameter ring 60 are formed in a ring shape. It is not something that can be done. For example, as another form, the bead separation member 57 may be formed in a polygonal column shape, and the diameter expanding ring 58 and the diameter reducing ring 60 may be polygonal.
[0037]
Next, the operation and effect of the bead separation device and the workpiece disperser according to the present embodiment will be described.
[0038]
As shown in FIG. 1, when an unillustrated extrusion pump is operated, a suspension (object to be processed) is supplied from the tip of a nozzle (not shown).
[0039]
The suspension that has entered the space portion 16 moves toward the end of the cylindrical portion 22 through the gap between the cylindrical portion 28 and the cylindrical portion 22 while being dispersed or crushed by the beads 66.
[0040]
The suspension that has moved to the end of the cylindrical portion 22 enters the upper side of the space portion 16 together with the beads 66.
[0041]
As described above, the suspension is dispersed or pulverized by the beads 66 inside the cylindrical portion 22.
[0042]
Next, the suspension that has entered the upper space 16 is separated from the beads 66 by the bead separator 40 and discharged as a product.
[0043]
That is, the suction pump (not shown) connected to the discharge port 56 is activated, and the driving means connected to the shaft 44 is activated to rotate the shaft 44 and the bead separating member 57. Here, the rotation speeds of the shaft 44 and the bead separation member 57 are set independently of the rotation speed of the rotation shaft 26. For this reason, it is also possible to rotate the shaft 44 at high speed.
[0044]
The suspension that has entered the upper side of the space 16 moves together with the beads 66 toward the bead separation member 57 (slit 62).
[0045]
Here, as shown in FIG. 3A, since the gap width H of the slit 62 is set to be smaller than the bead diameter, the bead 66 cannot pass through the slit 62, and only the suspension is slit. Pass through 62. Thereby, the beads 66 can be separated from the suspension. In particular, since the beads 66 are separated by passing the suspension through the slit 62, the separation performance of the beads 66 is kept constant without being adversely affected by changes in the suspension conditions (viscosity, concentration, specific gravity, etc.). Can be made.
[0046]
In the bead separator 40 of the present embodiment, the diameter expansion ring 58 and the diameter reduction ring 60 of the bead separation member 57 are alternately formed with the slit 62 interposed therebetween, so that the beads 66 approaching the bead separation member 57 are expanded. It can be flipped off by the diameter ring 58. For this reason, the number of beads 66 reaching the slit 62 can be reduced, and the bead 66 can be prevented from biting into the slit 62.
[0047]
Moreover, since the shaft 44 is comprised by the rotating shaft 26 and another member and can each act | operate separately, only the shaft 44 can be rotated at high rotation speed. For this reason, the force which flips the bead 66 when it contacts with the bead 66 can be increased. As a result, the number of beads 66 that can reach the slit 62 can be greatly reduced, and the biting of the beads 66 can be greatly reduced.
[0048]
Further, by rotating the shaft 44 at a high rotational speed, even if the bead 66 is caught in the slit 62, the bead 66 can be removed by the large centrifugal force.
[0049]
On the other hand, as shown in FIG. 3, by forming the enlarged diameter ring 58 and the reduced diameter ring 60 alternately via the slit 62, the gap width H of the slit 62 can be expanded to about ½ of the bead diameter. it can.
[0050]
That is, when the beads 66 are separated from the suspension by forming the ring 70 having the same diameter via the slit 72 as in the prior art shown in FIG. If it is not set smaller than 1/3 of the bead diameter, the bead 66 will be caught in the slit 72, and the distribution of the suspension will be adversely affected. In particular, when the diameter of the bead 66 is reduced for the purpose of improving the dispersion capacity of the suspension as in recent years, the gap width of the slit 72 must be further reduced, which increases the pressure loss. Problems arise.
[0051]
Here, even when the gap width H of the slit 62 is about ½ of the bead diameter as in the bead separator 40 of the present invention, it is possible to prevent the bead 66 from being caught in the slit 62. In addition, another effect of preventing an increase in pressure loss over the conventional slit gap can be achieved. In particular, in recent years when the beads 66 tend to be reduced in diameter, it becomes very useful.
[0052]
In addition, since a mesh composed of a steel wire net having a relatively low strength is not used as in the prior art, even when a bead collides, a diameter expanding ring 58 that can be manufactured with a member having a high wear resistance and The reduced diameter ring 60 is not easily worn. For this reason, durability of the bead separator 40 can be improved and stable separation is possible. At the same time, wear of the diameter-expanded ring 58 and the diameter-reduced ring 60 is less likely to enter the suspension due to the collision of the beads 66, and the quality of the suspension can be maintained high.
[0053]
As shown in FIG. 2, the suspension through which the beads 66 are separated after passing through the slit 62 passes through the suspension inflow hole 64 and enters the space portion 52, and the suspension that has entered the space portion 52 becomes a discharge port 56 as a product. Is discharged to the outside.
[0054]
【The invention's effect】
The bead separation device and workpiece dispersion machine of the present invention described above have the following effects.
According to the first aspect of the present invention, the outer edge of the outer protrusion member and the inner protrusion of the outer protrusion member are passed by changing the positions of the outer edge of the outer protrusion member and the outer edge of the inner protrusion member that are alternately formed and passing the object to be processed through the gap therebetween. Compared with the case where the position of the outer edge of the member is not different , the situation in which the bead bites into the gap can be greatly reduced. Further, a wider gap than the conventional technique can be set for the bead diameter to be reduced, and the blockage and clogging at the bead separation part can be reduced.
At the same time, since the outer edge of the outer protruding member is positioned outside the outer edge of the inner protruding member (on the side opposite to the rotating member), the beads can be blown off by the outer protruding member. As a result, the amount of beads floating in the vicinity of the gap can be reduced, and biting of the beads into the gap can be prevented as much as possible.
On the other hand, since such a configuration can reduce the situation where the beads bite into the gap portion, the gap width can be set wide as long as the bead diameter is less than the operating condition. As a result, the pressure loss when the object to be processed passes through the gap can be reduced.
Further, by separating the passes only the processed product beads gap, as compared to the bead separation apparatus for separating beads only by centrifugal force as in the prior art, various conditions (viscosity of the workpiece, The influence of concentration, specific gravity, etc.) is reduced, and the separation performance can be stabilized.
Furthermore, according to the bead separation device of the present invention, unlike the conventional technique that rotates the mesh or the like at a high speed, since the workpiece is passed through the gap between the outer protruding member and the inner protruding member, Since it has a shape that can be formed of a wear-resistant member without using a mesh formed of a steel wire net, it is advantageous in terms of wear resistance. As a result, it is possible to prevent a decrease in durability, and it is possible to prevent deterioration of the quality of the object to be processed because wear objects such as a mesh due to the collision of the beads are not mixed with the object to be processed.
[0055]
In the second aspect of the present invention, it is possible to further reduce the beads from entering the gap, it can be prevented as much as possible biting into the gap portion of the bead.
[0056]
Further, according to the present invention, the gap width of the gap can be increased to about the diameter of the beads , and the pressure loss can be greatly reduced.
[0057]
In the invention according to claim 3, since the bead separation device according to claim 1 or 2 is provided, it is possible to prevent the beads separated from the processed object after dispersion from being caught in the gap, It is possible to prevent the flow from stagnation. Moreover, since the gap | interval of a gap | interval part can be set widely in the state which prevented biting of the bead , pressure loss can be reduced.
[0058]
In the invention according to claim 4 , since the driving member and the rotating member, which are separate members, can be operated separately and independently, it is possible to realize the optimum rotational speed of both. As a result, it is possible to efficiently disperse the object to be processed and to prevent clogging of the beads between the gaps as much as possible.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view of a workpiece disperser according to an embodiment of the present invention.
FIG. 2 is a cross-sectional view of a bead separator according to an embodiment of the present invention.
3A is an operation diagram using a part of a bead separator according to an embodiment of the present invention, and FIG. 3B is an operation diagram using a part of a conventional bead separator.
FIG. 4 is a cross-sectional view of a conventional workpiece disperser.
FIG. 5 is a cross-sectional view of a conventional workpiece disperser.
FIG. 6 is a cross-sectional view of a conventional workpiece disperser.
[Explanation of symbols]
10 Bead mill
26 Rotating shaft (drive member)
28 Cylinder (diffusion member)
40 Bead separator ( bead separator )
44 Shaft (Rotating member)
52 Space part (guidance part)
56 Discharge port (guide section)
57 Bead separation member 58 Diameter expansion ring (outside protruding member)
60 Reduced diameter ring (inner protruding member)
62 Slit (gap)

Claims (4)

A bead separation device for separating the beads from an object to be processed used in the treatment object disperser for dispersing the beads, the processing object after dispersion,
A rotating member provided rotatably,
An outer projecting member attached to the rotating member and an inner side in which an outer edge is located on the rotating member side from an outer edge of the outer projecting member, which is attached between the outer projecting member and the outer projecting member. A bead separating member having a protruding member , wherein the gap width of the gap is set smaller than the diameter of the bead, and the outer protruding member and the inner protruding member are alternately formed ,
A guiding portion that communicates with the gap portion and guides the workpiece that has passed through the gap portion to the outside;
A bead separation device comprising: Distance difference between the outer edge of the outer edge and the inner projecting member of the outer projecting member, the beads according to claim 1, characterized in that it is set larger than the distance from the center of the bead to the outer edge of the bead Separation device. A processing object dispersing machine for dispersing the processing object by bringing beads into contact with the processing object by a dispersing means, comprising the bead separation device according to claim 1 or 2 . Disperser. The dispersion means includes a drive member that is rotatably provided, and a diffusion member that is attached to the drive member and diffuses the object to be processed and the beads , and the drive member and the rotation member are separate members. The disperser for processing objects according to claim 3 , wherein the disperser is configured to operate independently of each other .

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