JP4141054B2 - Distributed device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a dispersion apparatus for dispersing a composition that is a fluid or semi-fluid, and more specifically, a composition that is a raw material for cosmetics such as lipsticks and foundations in addition to a composition such as paint and ink, and moisture. And a mixture of oil and a relatively high-viscosity compound such as a compound that is dispersed and emulsified, or alumina particles in a liquid in order to obtain alumina particles that are fired into ceramic products The present invention relates to a dispersing apparatus suitable for dispersing a blend containing particles of high hardness such as a blend.
[0002]
In the present specification, “compound” refers to a mixture of two or more raw materials, and “dispersion” includes stirring or mixing.
[0003]
[Prior art]
The production of coating compositions containing solids such as coatings and inks is performed by, for example, a pre-kneading step of mixing a resin varnish and a pigment to obtain a paste, and the paste obtained by the pre-kneading step is mixed with a ball mill, a roll mill, Dispersion step of obtaining a mill base in which the pigment is uniformly dispersed in the resin varnish by dispersing with a dispersing device such as the above, the mill base obtained by the dispersion step is mixed with a solvent, a resin varnish, and additives as necessary using a dissolver, etc. Manufactured through a dissolution process.
[0004]
And in recent years, from the good workability that the dispersion step and the dissolution step described above can be performed at the same time, the stirring blades are agitated in the basket immersed in the stirring vessel filled with the composition. Dispersing devices are used that rotate the shaft to disperse the formulation.
[0005]
This dispersing apparatus attaches a stirring blade to the tip of a stirring shaft provided at a length reaching the composition from above the stirring vessel, and rotates the stirring blade through the stirring shaft. By rotating with a driving device, the pigment particles (secondary particles) aggregated due to the shear stress between the blends are loosened into the pigment particles alone (primary particles), and the solvent, resin varnish, additive, etc. are mixed and the liquid A pigment particle is dispersed therein, and the outer side of the stirring blade is a metal thin plate material in which many small holes are formed on the side wall and the bottom wall, or a basket (casing) made of a fine mesh wire mesh. When a dispersion medium such as a glass sphere, a steel sphere, or a ceramic sphere is placed in the basket and the stirring blade is rotated, large particles of solid matter in the compound are ground and mixed in the basket. Crushed and refined, refined The pigment particles flow out of the small holes and meshes on the bottom wall and side of the basket, convect in the stirring tank, flow into the basket again from above the basket, and are further crushed and dispersed in the formulation. (See, for example, Japanese Patent Laid-Open Nos. 60-122033 and 61-293536).
[0006]
In such a basket mill, the compound dispersed in the basket is caused to flow out from the small holes formed in the bottom wall and the side wall of the basket, and the compound flowing out below the bottom wall of the basket is below the bottom wall of the basket. In the liquid, the solid particles such as the secondary particles of the pigment are weighted in the liquid. Since it is a thing, a considerable amount is not disperse | distributed but it falls as it is to the stirring tank bottom face from the small hole of a basket bottom wall. That is, since the dispersion medium thrown into the housing is collected around the basket side wall by the rotational centrifugal force generated by the rotation of the stirring blade, at least the mixture around the stirring shaft is not dispersed at all. Since it tends to flow out from the small hole in the bottom wall to the bottom of the basket and settle down below the stirring shaft, how to increase the dispersion effect in a short time considering these factors is still a big issue. there were.
[0007]
Further, in the dispersing device provided with a basket having a large number of small holes as described above, it is easy to clog due to the aggregated pigment particles in the blend, and in particular, normal carbon is in powder form and very light, Since it tends to float and hinders the working environment, when a compound containing a pigment such as bead carbon formed with a particle size of about 0.5 mm is dispersed, small holes formed in the basket without the bead carbon or the like being dispersed. The clogging of the basket by the bead carbon prevents the compound from circulating inside and outside the basket. For this reason, in a conventional basket mill, it is impossible to disperse a compound containing solids such as pigments such as bead carbon, which has a strong aggregation of primary particles and a hard secondary particle that is difficult to loosen.
[0008]
In order to solve such problems, a dispersing device in which the bottom wall of the basket is formed of a bottom wall of a mekra not provided with a small hole, and a small hole is formed only in the side wall, and the small hole of the dispersing device is a side wall plate. A plurality of gap plates shorter than the side wall plate in the circumferential direction of the side wall, and a small hole formed by a slit formed by the side wall plate facing up and down and the gap plate facing in the circumferential direction of the side wall; The dispersion apparatus which has been applied has already been filed by the applicant of the present invention (see Japanese Patent Publication No. 8-17930).
[0009]
[Problems to be solved by the invention]
In the dispersing apparatus described in Japanese Patent Publication No. 8-17930, as described above, the bottom wall of the basket is made to be a mekura, so that the residence time of the compound in the basket becomes long, and this kind of conventional dispersing apparatus Compared to the above, the compound can be dispersed in a short time.
[0010]
Further, in a dispersing device in which slit-like small holes are formed on the side wall of the basket, dispersion can be performed even when used for dispersing a blend containing a pigment having a coarseness to a certain degree of hardness.
[0011]
However, in this type of dispersing apparatus, steel balls, glass balls, ceramic balls, zirconia balls, etc. accommodated as a dispersing medium in the basket are actively moved or circulated in the basket, and in the basket. By increasing the amount of the dispersion medium to be accommodated, further improvement of the dispersion efficiency can be expected. However, in the above-described conventional dispersion device, the dispersion pin is joined to the rotating shaft as shown in FIG. As shown in FIG. 11, a substantially cylindrical dispersion pin support 15 having a dispersion pin 14 planted on the outer periphery is fixedly joined to the outer periphery of the rotating shaft, and the dispersion pin support 15 is attached to the inside of the basket 20. Since it occupies a relatively large volume, the dispersion pin support 15 prevents movement and circulation of the dispersion medium 37 in the basket 20 and can be accommodated in the basket 20. Also the amount of Do dispersion medium 37 has been a limiting.
[0012]
Incidentally, the accommodation amount of the dispersion medium 37 in this type of conventional dispersion apparatus is about 65 to 80% with respect to the capacity of the basket 20, and when the dispersion medium 37 is accommodated in the basket 20 exceeding this amount. The rotation shaft does not rotate well in the basket 20 or the dispersion medium 37 jumps out of the basket 20 from the opening 38 formed at the center of the lid plate 22 that covers the upper end of the basket 20. It was.
[0013]
Further, in the conventional dispersion apparatus, when a high viscosity compound is dispersed without reducing the amount of the dispersion medium 37 accommodated in the basket 20, a large amount of the dispersion medium 37 is accommodated in the basket 20. Similarly to the above, there is a problem that the rotating shaft 12 does not rotate smoothly or the accommodated dispersion medium 37 jumps out of the basket 20.
[0014]
Therefore, in the case of a conventional dispersion apparatus, when a highly viscous compound is dispersed, it is necessary to reduce the amount of the dispersion medium 37 accommodated in the basket 20, so that there is a problem that the efficiency of dispersion is lowered. Was.
[0015]
Accordingly, an object of the present invention is to solve the above-described drawbacks in the prior art, and even when a large amount of dispersion medium is accommodated in the basket, the active movement and circulation of the dispersion medium is maintained. It is an object of the present invention to provide a dispersing apparatus that can disperse the dispersion medium out of the basket and thus can efficiently disperse a highly viscous compound. .
[0016]
[Means for Solving the Problems]
  In order to achieve the above-described object, the dispersing apparatus of the present invention immerses the basket 20 containing the dispersion medium 37 in the stirring vessel 60 filled with the composition 65, and a plurality of dispersion pins in the basket 20. In the dispersing device for rotating the rotating shaft 12 from which the 14 is protruded to disperse the compound 65,
  The dispersion pin 14 is attached to the rotary shaft 12 via a dispersion pin support 15.
  The dispersion pin support 15 includes an inner cylindrical portion 156 into which the rotating shaft 12 is inserted and fixed to the outer periphery of the rotating shaft 12, and an outer surface formed by projecting a plurality of dispersing pins 14 to the outer periphery in the opposite direction of the rotating shaft 12. A cylindrical portion 151, and a connecting portion 152 that defines an interval through which the dispersion medium 37 can pass between the outer periphery of the inner cylindrical portion 156 in the direction opposite to the rotation axis 12 and the inner periphery of the outer cylindrical portion 151 in the rotation axis 12 direction;
  Openings 153 and 154 through which the dispersion medium 37 can pass are provided in the outer cylindrical portion 151 and the connecting portion 152 or in the outer cylindrical portion 151 or the connecting portion 152.And
The basket 20 includes a cylindrical side wall 24 in which a large number of small holes (slits) 35 are formed, a cover plate 22 that covers the upper opening of the side wall 24, and a bottom plate that covers the lower part of the side wall 24. 29, and a cylindrical portion 39 is provided at the center of the lid plate 22 so as to pass through the lid plate 22 and protrude downward. The lower end of the cylindrical portion 39 is inserted into the outer cylindrical portion 151 of the dispersion pin support 15, and the cylindrical portion 39 is provided. An opening 38 for inserting the rotary shaft 12 into the basket 20 is formed in the portion 39.It is characterized by that.
[0018]
Further, the basket 20 of the dispersing apparatus can contain 80% or more of the dispersion medium 37, preferably 95 to 98% of the dispersion medium 37 with respect to the capacity of the basket 20 in order to improve the efficiency of dispersion. .
[0019]
In addition, in order to cool the compound which absorbed the heat | fever which generate | occur | produces at the time of dispersion | distribution, the pump 65 and cooling means which introduce | transduce the compound 65 in the said stirring tank 60, and circulate in the said stirring tank 60 again after cooling. In addition, a cooling mechanism including a pipe line or the like can be provided.
[0020]
DETAILED DESCRIPTION OF THE INVENTION
Next, embodiments of the present invention will be described with reference to the accompanying drawings. In the present embodiment, as an example, a composition such as paint or ink, which has been conventionally dispersed by this type of dispersion device, will be described as an example. It is not limited to dispersion, it can efficiently disperse even highly viscous compounds, and is used to disperse relatively clay-rich formulations that are raw materials for cosmetics such as lipsticks and foundations. Moreover, it can also be used as a means for mixing or stirring, for example, when mixing and emulsifying a substance composed of oil and moisture. In addition, from the viewpoint of high dispersion efficiency, for example, a mixture obtained by mixing particles of high hardness (for example, alumina) in a solution such as water is dispersed, and the particles dispersed from the liquid are recovered. It can be used as a means for refining. For example, in the above-mentioned example of refining alumina, particles of alumina having a particle size of 1 μm or less are obtained by dehydrating a compound obtained by dispersion in a relatively short time. Can be recovered, and can be used for the production of various raw materials, such as a high-quality ceramic product by adding a binder or the like to the product and firing it.
[0021]
As shown in FIG. 1, the dispersing device of the present invention is installed below the tip of a rotary drive mechanism 11 configured to be movable up and down, and is immersed in a stirred tank 60 filled with a composition 65 so that the stirred tank. 60, which can disperse compound 65 in 60, and containing a dispersion medium 37 made of steel balls, glass spheres, ceramic spheres, zirconia spheres and the like together with compound 65 circulating in the basket, and said basket A rotating shaft 12 that is inserted into the basket 20 and rotates in the basket 20, is attached to the rotating shaft 12, and rotates with the rotation of the rotating shaft 12 to stir the dispersion medium 37 accommodated in the basket 20. Dispersion pins 14 and a liquid convection shaft 46 arranged between the basket 20 and the inner wall of the stirring vessel 60 for convection of the mixture 65 filled in the stirring vessel 60 and the liquid convection shaft. Consisting of liquid convection vanes 47.
[0022]
The basket 20 has a cylindrical shape in which a large number of small holes 35 through which the compound 65 passes are formed on the side wall, and a lower end of the basket 20 is covered with a bottom wall 29 having no small holes.
[0023]
The basket 20 disperses the compound 65 introduced through the opening 38 provided in the lid plate 22 and discharges the dispersed compound 65 to the outside of the basket 20 through the small hole 35. The rotating shaft 12 inserted into the basket 20 through the opening 38 formed in the lid plate 22 and a plurality of pairs of dispersion pins 14 attached to the rotating shaft 12 are rotatably arranged. The mixture 65 and the dispersion medium 37 accommodated in the basket 20 by the rotation of the dispersion pin 14 are configured to be stirred.
[0024]
The dispersion pins 14 disposed in the basket 20 are attached to the rotary shaft 12 via the dispersion pin support 15. For example, a plurality of dispersion pins 14 are radially arranged around the rotation shaft 12. is doing.
[0025]
In the embodiment shown in FIG. 1 and FIG. 2, the upper and lower two-stage dispersion pins 14, 14 are implanted at an equal angle of 90 ° on the outer periphery of the dispersion pin support 15, and adjacent to each other in the circumferential direction. Between the two-stage dispersion pins 14, 14: 14, 14, the first-stage dispersion pins 14 are respectively planted at substantially intermediate positions in the height direction, and the dispersion pins are radially distributed at an equal angle of 45 ° on the plane. 14 are planted.
[0026]
As shown in FIGS. 2 and 3, the dispersion pin support 15 includes an outer cylinder portion 151 formed in a cylindrical shape, and an inner cylinder portion 156 disposed concentrically in the outer cylinder portion 151. The lower ends of the cylindrical portion 151 and the inner cylindrical portion 156 are integrally formed by a connecting portion 152 forming a bottom wall, and the inner cylindrical portion 156 is fixed in the outer cylindrical portion 151. In the embodiment shown in FIGS. 2 and 3, the inner cylinder portion 156 is shown as being disposed in the outer cylinder portion 151, but the inner cylinder portion 156 protrudes from the lower end of the outer cylinder portion 151. The connecting portion 152 is not limited to connecting the lower end portions of the outer tube portion 151 and the inner tube portion 156, and the inner wall of the outer tube portion 151 and the outer peripheral wall of the inner tube portion 156 are not limited. Various changes such as connecting the peripheral walls can be made.
[0027]
The outer cylinder portion 151 and the connecting portion 152 are formed with openings 153 and 154 that allow the dispersion medium 37 to pass therethrough, respectively. In the present embodiment, as shown in FIGS. 3 and 4, the openings 153 and 154 have a rectangular shape for those formed in the outer cylinder portion 151, and a circle for those formed in the connecting portion 152. Although formed, the shapes of the openings 153 and 154 are not limited to those shown in FIGS. 3 and 4, and other shapes, such as polygonal shapes other than squares, circles, ellipses, etc., facilitate the movement or circulation of the dispersion medium. As long as it is possible, it can be formed into any other shape as appropriate.
[0028]
Further, as shown in FIGS. 2 and 3, a cutout can be provided at the upper end edge of the outer cylinder portion 151 in order to promote further movement or circulation of the dispersion medium.
[0029]
The number, the shape, and the size of the openings 153, 154 are preferably large as long as the dispersion pin support 15 has a strength that can withstand an impact during dispersion, and more openings 153, 154 are provided. As a result, the movement or circulation of the dispersion medium 37 previously blocked by the dispersion pin support 15 becomes active, and the dispersion pin support 15 itself having the openings 153 and 154 formed therein is similar to the dispersion pin 14 in the basket 20. 2 and the dispersion medium 37 are stirred. In particular, as shown by the arrows in FIG. 2, the mixture stirred by the rotation of the dispersion pin support 15 is the same as that of the dispersion pin support 15. Since it flows in the outer peripheral direction, the composition is preferably discharged out of the basket 20 through the small holes 35 formed in the peripheral wall of the basket 20 to disperse the high clay composition. Even if it is possible to prevent the occurrence of clogging of the basket 20. Therefore, even when a large amount of the dispersion medium 37 is accommodated as compared with the conventional apparatus, the apparatus can be preferably operated and the dispersion efficiency can be improved.
[0030]
In the embodiment shown in FIGS. 2 and 3, the dispersion pin support 15 is integrally formed. For example, the outer cylinder portion 151 of the dispersion pin support 15 is illustrated in FIG. As shown in FIG. 5, the dispersion pin support 15 is formed by stacking a plurality of stages of endless annular members forming the outer cylindrical portion 151 and fastening them with bolts or the like. You can also. In this case, for example, by increasing the number of endless annular members to be stacked, it is possible to easily cope with an increase in the number of dispersion pins 14 due to the size expansion of the basket 20 and the like, and the inner cylinder portion 156 with respect to the rotating shaft 12. Is easy to install.
[0031]
The cover plate 22 that defines the upper portion of the basket 20 includes a rotating shaft 12 in the center, and includes a pigment such as paint or ink in the stirring tank 60, a pigment that becomes a cosmetic, and a solid material such as alumina. An opening 38 is formed for introducing the liquid formulation into the basket 20.
[0032]
As shown in FIG. 2, the opening 38 extends through the lid plate 22 to a substantially central position in the height direction of the basket 20 in this embodiment, and has a lower end in the outer cylinder 151 of the dispersion pin support 15. It is defined by a cylindrical portion 39 to be inserted.
[0033]
Thus, by extending the lower end of the cylindrical portion 39 so as to be disposed in the outer cylinder 151 of the dispersion pin support 15, the composition in the basket 20 does not flow backward and is discharged from the opening 38, Accordingly, it is possible to prevent the dispersion medium 37 in the basket 20 from jumping out of the basket 20 together with the backward flowing composition.
[0034]
The lid plate 22 can be formed of a single disk-shaped metal plate or the like, but preferably, as shown in FIG. 2, a hollow chamber 40 is formed therein, and cooling water is contained in the hollow chamber 40. A lid plate 22 configured to circulate a cooling medium such as the like is used.
[0035]
In this embodiment, the lid plate 22 is formed in a hollow space in the upper lid 22 by an inclined cone-shaped inclined surface 23 that forms the upper wall of the lid plate 22 and an inner wall 43 formed by the outer periphery of the cylindrical portion 39. 40 are defined.
[0036]
In the hollow chamber 40, for example, in the embodiment shown in FIG. 2, a cooling medium such as cooling water is introduced through one of the rods 13 and 13 formed hollow (for example, the right side in FIG. 2). The cooling medium introduced through the rod 13 (for example, the left side in FIG. 2) can be extracted, and the basket 20 and the mixture overheated by heat generated during dispersion can be cooled.
[0037]
Furthermore, baffle plates 70a, 70b, 70c, and 70d can be provided in the hollow chamber 40 at positions that divide the hollow chamber 40 into four equal parts, for example, as shown in FIGS.
[0038]
The baffle plate 70a forms a right triangle having the same shape as the longitudinal section of the hollow chamber 40. The baffle plate 70a defines the hollow chamber 40 of the upper lid 22, and trapezoidal baffle plates 70b and 70d and a triangular baffle. The plate 70c does not have a shape or area that covers the entire longitudinal section of the hollow chamber 40, and is attached to the bottom surface 42 side or the inclined surface 23 side of the hollow chamber 40, respectively, so that the inclined surface 23 side or the bottom surface 42 side is attached. Each is formed as a flow path through which a cooling medium can pass.
[0039]
In FIG. 7, 52 a to 52 d indicate screw holes, and the four rods 13 that are suspended and fixed to the main body 10 of the dispersion apparatus are respectively attached. As shown in FIG. 6, the screw holes 52 a to 52 d are formed in the bracket 55 provided on the flange portion 36 on the outer periphery of the bottom surface 42 of the upper lid 22 with a female screw portion in the vertical direction. The second bracket 55 of 52d is formed with a communication hole 56 in the horizontal direction so as to communicate with the screw hole 52. Accordingly, in FIG. 7, the screw holes 52a and 52b communicate with the hollow chambers 40a and 40d between the baffle plates 70a and 70b and 70d, respectively. The communication holes 56 are not provided in the other screw holes 52b and 52c.
[0040]
The screw holes 52a and 52b are coupled by screwing a male thread portion provided at the lower end of the rod 13 having a flow path through which the cooling medium passes. Similarly, the male screw portion provided at the lower end of the rod 13 is connected to the other screw holes 52b and 52c by screwing into the female screw portion of the screw hole, and the basket 20 is fixed to the main body 10 of the dispersing device. The flow paths of the two rods 13, 13 connected to the screw holes 52 a, 52 d communicate with a cooling medium supply source (not shown) via the dispersion device body 10.
[0041]
The lower end of the basket 20 configured as described above is covered with the bottom wall 29.
[0042]
In this way, covering the lower end of the basket 20 with the bottom plate 29 of the Mekura makes it difficult for the solids such as pigments that are heavy in the liquid to flow out of the basket 20 in an attempt to fall downward in the liquid. For this reason, when the bottom wall 29 is provided only on the side wall 24 rather than when the small holes 35 are provided, the solids stay in the basket 20 for a longer time, and the solids in the compound 65 are finer. It is crushed and dispersed.
[0043]
As shown in FIGS. 2 and 6, the side wall 24 of the basket 20 has a mekra side wall 26 having a diameter of 800 mm, which forms a part of the side wall 24, on the lower surface of the bottom plate 42 of the lid plate 22 fixed to the lower ends of the rods 13 and 13. 24 pieces of wire support bodies 25 that are formed to protrude downward and form prismatic shapes on the lower end surface of the side wall of the mekra are disposed at regular intervals of about 100 mm in the peripheral direction of the side wall and protrude downward. That is, each wire support 25 has a threaded portion formed at the upper end screwed to the lower end surface of the mekura side wall 26.
[0044]
On the surface of each wire support 25 with respect to the side wall circumferential direction, a number of wire support holes 28 through which a circular wire 27 having a diameter of 4 mm can be inserted in the horizontal direction are provided at intervals of about 0.8 mm in the vertical direction. A wire 27 having a length that circulates in the circumferential direction is sequentially inserted into each of the wire support holes 28 and 28 facing each other, and both ends of the wire 27 are butted endlessly in the wire support hole 28 of one wire support 25. . It fixes to the end surface of the wire support hole 28 of the wire support body 25 by spot welding. This spot welding can also be performed in the wire support hole 28 at an arbitrary location.
[0045]
As described above, by providing the wires 27 having a length that goes around the side wall in the vertical direction in the wire support holes 28 in the vertical direction, a minute gap of 0.8 mm is formed between the wires 27 and 27 facing each other in the vertical direction. A number of slits (small holes) 35 are formed by the wires 27, 27 facing up and down and the wire supports 25, 25 facing in the circumferential direction of the side wall 24, and these slits 35 are formed all around the side wall. Yes.
[0046]
The minute intervals of the slits 35 can be provided at desired intervals according to the dispersion state of solid particles, the viscosity of the compound, and other various conditions, and the wire supports 25 and 25 adjacent to each other. The interval between them is not limited to the above-mentioned 100 mm, and can be appropriately set according to the strength of the wire 27.
[0047]
Further, the wire 27 is a rigid material such as a piano wire that is not deformed by the dispersion medium 37, and can be formed in a curved shape as shown in FIG. After passing through each wire support hole 28, both ends of the wire 27 are tensioned to form a wire 27 between the wire support bodies 25, 25 adjacent to each other, and both ends of the wire 27 are connected by welding. You can also.
[0048]
In addition, the wire 27 is formed in a straight or curved shape with a material having a rigidity that does not deform even when the dispersion medium 37 collides, and the wire 27 is formed between the two wire supports 25 and 25 adjacent to each other. The both ends of the wire 27 can be inserted into the wire support holes 28 and 28 of the wire support 25 and 25 facing each other. At this time, when each wire support hole 28 is a hole penetrating the both side surfaces of the wire support members 25, 25, the wire support holes 28, 28 are inserted into the wire support holes 28, 28 from both side surfaces of the wire support members 25, 25. Although the end surfaces of the adjacent wires 27 and 27 are in contact with each other in the wire support holes 28 and 28 and influence each other, the wire support holes 28 and 28 do not penetrate both side surfaces of the wire supports 25 and 25. In the case of a hole, both ends of each wire 27 do not affect each other with the other wires 27, so that the wire support holes 28 are more preferable than the case where the wire support holes 28 are through holes.
[0049]
Alternatively, the wire 27 may be formed to have a length such as a half circumference or a third circumference in the circumferential direction of the side wall, and the wire 27 may be inserted into each wire support hole 28 in the circumferential direction of the side wall. As described above, the structure for attaching each wire 27 to each wire support 25 is not limited.
[0050]
The small hole 35 provided in the side wall 24 of the basket 20 is not limited to the one formed between the wires 27 and 27, but is a metal thin plate material in which a large number of fine holes or slits are formed, or fine It may be formed by a mesh wire mesh, and a plurality of flat plates having a certain width in the thickness direction of the side wall 24 and a plurality of gap plates shorter than the flat plate in the circumferential direction of the side wall 24 are alternately stacked. Alternatively, the gap plate may be disposed at an appropriate position around the side wall 24, and may be formed in the small hole 35 including a slit formed by a flat plate facing up and down and a gap plate facing in the circumferential direction of the side wall 24.
[0051]
The bottom wall 29 that demarcates the bottom of the basket 20 is a mekra bottom plate 29 without a small hole such as a slit through which the compound 65 flows or a fine mesh net.
[0052]
In the conventional basket mill, small holes are provided in the entire side wall and bottom wall of the basket mill. Therefore, when the dispersion pin 14 is rotated in the basket 20, it is introduced into the basket 20 due to the vortex generated in the basket 20. Since the blended composition 65 is discharged to the outside from the nearest small hole 35 and is not sufficiently dispersed, the blended composition 65 discharged out of the basket 20 needs to be convected and repeatedly introduced into the basket 20 and dispersed. It was. Therefore, it takes a long time to obtain a desired dispersion effect. However, according to the basket 20 of the dispersing device of the present application, since the small holes 35 through which the compound 65 can flow out of the basket 20 are provided only on the side wall 24 of the basket 20, the opening 38 provided in the lid plate 22 of the basket 20. Further, the blend 65 introduced into the basket 20 passes through the basket 20 while colliding with the long-distance dispersion medium 37, so that it is finely dispersed by the shear stress between the stirred dispersion medium 37 and the blend.
[0053]
Further, the mekura bottom plate 29 can be formed in a tapered shape whose inner surface descends from the center toward the side wall 24, and is covered with a lid 32 on the side wall 24 side of the mekura bottom plate 29 at the time of dispersion work. Dispersion medium punching holes 31 can also be provided.
[0054]
When the bottom plate 29 is formed in this manner, the composition 65 is well peeled when the basket 20 is taken out from the dude composition 65 after the dispersion work is completed, and the dispersion medium punching hole lid 32 is removed. The dispersion medium 37 can be easily extracted from the basket 20. At this time, there is no need for troubles such as tilting the basket 20 or turning it upside down.
[0055]
The basket 20 configured as described above is connected to the lower side of the dispersion apparatus body 10 via the rod 13 connected to the screw holes 52a to 52d of the lid body 22 and is also a motor 41 of the rotation drive mechanism 11 described later. The dispersion pin 14 provided via the dispersion pin support 15 at the tip of the rotating shaft 12 interlocked with the rotation shaft is rotatably arranged in the basket 20, and the dispersion medium 37 is accommodated in the basket 20 to contain the compound. It is immersed in the stirred tank 60 filled with.
[0056]
As shown in FIG. 1, between the outside of the basket 20 immersed in the stirring tank 60 and the inner wall of the stirring tank 60, a liquid flow shaft 46 that is rotationally driven by a motor 48 that is a rotational driving means. The liquid flow blades 47 are provided on the liquid flow shaft 46 in a stirring tank at a position that does not interfere with the basket 20, for example, below the bottom wall 29 of the basket 20.
[0057]
In the present embodiment, a liquid flow vane 47 is provided at the tip of a liquid flow shaft 46 that is directly connected to a motor 48 installed on a gantry of the rotary drive mechanism 11 and provided below, and the liquid flow vane 47 is provided in the basket. In the present embodiment, two liquid flow shafts 46 are arranged at symmetrical positions with the basket 20 as the center, and each of the liquid flow shafts 46 is disposed at the tip thereof. A blade 47 is attached. Therefore, solids and the like in the compound 65 that tends to precipitate at the bottom of the stirring vessel 60 can be suitably convected, and thus the dispersion efficiency can be improved.
[0058]
Thus, since the liquid flow blades 47 are provided on the liquid flow shaft 46 provided separately from the rotating shaft 12, that is, in the lower part of the stirring tank 60 and away from the basket 20, For example, even when the basket 20 is moved upward in the stirring tank 60, the liquid flow blades 47 cause the solids to settle and cause the mixture below the stirring tank to flow. The mixture containing the solid matter can be convection uniformly without being affected by the stopping position of
[0059]
The dispersing device of the present invention configured as described above is combined with the rotary drive mechanism 11 that drives the rotating shaft 12 that rotates in the basket 20 of the dispersing device, the lifting device 50, etc. as shown in FIG. Configure the device.
[0060]
In FIG. 1, the rotary drive mechanism 11 is installed above the lift shaft 53 of the lift device 50, and the dispersion device of the present invention is installed below the tip of the rotary drive mechanism 11.
[0061]
The elevating device 50 is provided with an ascending valve 57 and a descending valve 58 for making it possible to stop and adjust the rotation drive mechanism 11 installed on the upper portion of the elevating shaft 53 to an arbitrary position by a hydraulic cylinder (not shown) inside the elevating device body 51. A guide shaft 54 for guiding the rotational drive mechanism 11 is provided.
[0062]
In the rotational drive mechanism 11, the motor 41 is shifted by a transmission (not shown) such as an inverter circuit, and rotates at a speed set by the transmission, and this rotational force is transmitted through a transmission means such as a V-belt. 10 is linked to a rotating shaft 12 described later. A tachometer 16 for measuring the rotation speed of the rotary shaft 12 is provided.
[0063]
The dispersing device is fixed to the dispersing device main body 10 by connecting to the flange portion 36 projecting in the basket outer peripheral direction on the side wall 24 of the basket 20 via the four rods 13 below the rotation driving mechanism 11. In the basket 20, a dispersion pin 14 provided via a dispersion pin support 15 is rotatably installed at the tip of the rotating shaft 12 interlocked with the motor 41 of the rotation drive mechanism 11. A dispersion medium 37 such as a glass sphere, a steel sphere, a ceramic sphere, or a zirconia sphere is accommodated in 95 to 98% of the capacity of the basket 20. In this type of conventional dispersing device, when the dispersion medium is accommodated exceeding 80% of the capacity of the basket 20, the rotation of the rotating shaft 12 is suppressed, and the opening formed in the lid plate 22. Although the malfunction such as the dispersion medium 37 in the basket 20 jumping out from 38 has occurred, in the dispersion apparatus of the present invention, the capacity of the dispersion medium 37 is increased without causing such malfunction. Dispersion efficiency can be improved. Incidentally, when the dispersion is performed at 80% of the capacity of the basket 20, the wear of the tip portion of the dispersion pin 14 is severe, and almost no wear is seen toward the rotating shaft 12, but a dispersion medium of 90% of the capacity is used. When dispersion is performed in the accommodated basket 20, wear is observed not only at the tip portion of the dispersion pin 14 but also at a position closer to the rotating shaft 12, and a high grinding force in a wider range within the basket 20. It can be confirmed that shear stress is generated.
[0064]
The stirring tank 60 shown in FIG. 1 has a tapered bottom wall so that the liquid in the tank can easily flow out. A drain valve 61 is provided in the vicinity of the tip of the taper, and a wheel 62 is further provided for movement. It can be.
[0065]
Furthermore, in the stirring tank 60, the mixture 65 in the stirring tank 60 is introduced, cooled by heat exchange or the like, and then returned to the stirring tank 60 again. It is preferable to provide a cooling mechanism. That is, in the dispersing apparatus of the present invention, the dispersion efficiency is improved with the increase of the dispersion medium that can be accommodated in the basket 20, while the compound is heated by the frictional heat generated at the time of dispersion, and the organic solvent This is to prevent volatilization and the like.
[0066]
The operation of the entire apparatus including the dispersing apparatus of the present invention configured as described above will be described.
[0067]
A liquid compound 65 consisting of solids such as pigments such as paints and inks, resin varnish, solvent and additives added as necessary is filled in the stirring vessel 60, and as described above, The dispersion apparatus main body 10 of the present invention is placed in the tank.
[0068]
When the lift valve 57 of the lift device 50 is opened, a cylinder (not shown) in the lift device body 51 is operated, and the rotary drive mechanism 11 is lifted by being guided by the guide shaft 54 as the lift shaft 53 is lifted. The basket 20 of the dispersion device main body 10 provided at the tip of the rotation drive mechanism 11 is also raised. In this state, the stirring tank 60 filled with the blend 65 is moved, installed at a predetermined position below the basket 20, the lowering valve 58 of the lifting device 50 is opened, and the basket 20 of the dispersing device body 10 is stirred. Lower into 60 of said formulations 65.
[0069]
When the motor 41 of the rotation drive mechanism 11 is driven, the rotation shaft 12 of the dispersion apparatus body 10 is driven to rotate through a transmission means such as a V belt (not shown), and the operator connects to the inverter circuit while watching the tachometer 16 and the like. The rotational speed of the rotary shaft 12 is adjusted by adjusting the shift switch that has been set.
[0070]
The dispersion pin 14 provided in the basket 20 is rotated in the basket 20 by the rotation of the rotation shaft 12 to stir the dispersion medium 37 in the basket, and the mixture 65 in the stirring tank 60 is mixed with the rotation shaft. 12 is introduced into the basket 20 through an opening 38 provided in the cover plate 22 on the upper surface of the basket 20 by convection generated by the liquid introduction blade 18 provided in the basket 12.
[0071]
The compound 65 introduced into the basket 20 through the opening 38 collides with the dispersion medium 37 stirred by the dispersion pin 14 in the basket 20, and is dispersed by the grinding force and shear stress caused by the collision between the dispersion media 37. Then, the liquid flows out of the basket 20 through the dispersion medium 37 and the slit 35.
[0072]
At this time, as shown by the arrows in FIG. 2, the dispersion pin support 15 formed with a large number of openings 153 and 154 does not hinder the movement or circulation of the dispersion medium 37 but also the dispersion pin support 15 itself. Has a function as a stirring blade for stirring the compound 65 in the basket 20, and further, the compound in the basket 20 flows in the outer peripheral direction of the dispersion pin support 15 by the rotation of the dispersion pin support 15. Therefore, even when the compound is suitably discharged from the small hole 35 formed in the peripheral wall of the basket 20 to the outside of the basket 20 to disperse the high clay compound, the compound is not clogged. 65 is efficiently distributed.
[0073]
Further, the presence of the openings 153 and 154 formed in the dispersion pin support 15 also increases the distance that the compound 65 moves in the basket 20, and this also contributes to the improvement of the dispersion efficiency by the dispersion apparatus of the present invention. is doing.
[0074]
The dispersion medium 37 accommodated in the basket 20 contains 95 to 98% of the capacity of the basket 20 and a very large amount of the dispersion medium 37, and an impact generated when the dispersion medium 37 is stirred. The force is far greater than the impact force in this type of conventional dispersing device, so that the solids in the formulation 65 are almost completely dispersed in a short time.
[0075]
As described above, the dispersing apparatus according to the present invention is configured to increase the amount of the dispersion medium that can be accommodated in the basket 20, so that the processing capacity is remarkably improved as compared with the basket of the conventional dispersing apparatus. Has been.
[0076]
Therefore, the solids in the blend 65 are crushed and dispersed more finely than a conventional dispersing device by passing through the basket once. As a result, it is possible to obtain a composition in which pigment particles are finely dispersed in a shorter time than a conventional dispersing apparatus, and to produce a paint capable of forming a more beautiful coating film.
[0077]
The solids such as the pigment dispersed in the solvent, the resin varnish, and the additive in this way pass through the small holes 35 formed by the slits provided in the side wall 24 by the centrifugal force generated by the rotation of the dispersion pins 14, and the basket. Out of 20. At this time, since the solids in the blend 65 are almost completely dispersed, the small holes 35 are not clogged, and even a blend containing a solid having a coarse particle size can be well dispersed.
[0078]
The composition 65 that has flowed out of the basket 20 through the slit 35 is provided with the outflow action or the liquid flow blades 47 provided in the lower part of the stirring tank and away from the basket 20. Is convected upward by the flow and flows into the basket 20 again.
[0079]
Among the solid particles dispersed in the basket 20, particles larger than the width of the slit 35 determined by the distance between the wires 27 and 27 cannot pass through the slit 35, and thus are further finely dispersed in the basket 20.
[0080]
After the dispersion processing is completed as described above, the motor 41 is stopped, the ascending valve 57 is opened, the basket 20 of the dispersion apparatus body 10 is raised from the stirring tank 60, and then the stirring tank 60 is carried out. When the inner surface of the Mekura bottom plate 29 is formed in a tapered shape that is inclined downward toward the outside, the liquid of the compound 65 in the basket 20 is removed when the basket 20 is taken out from the compound 65 in the stirring tank 60. Since the cutting is improved, the composition 65 is effective without being wasted.
[0081]
Before the dispersion of another kind of the compound 65 is performed, the dispersion apparatus main body 10 is thoroughly washed, and the next dispersion treatment is performed in the same manner. The dispersion medium 37 in the basket 20 can be easily pulled out from the dispersion medium extraction hole 31 of the Mekura bottom plate 39, and the dispersion medium 37 can be cleaned separately.
[0082]
【The invention's effect】
According to the configuration of the present invention described above, the amount of the dispersion medium that can be accommodated in the basket can be increased, and even if the amount of the dispersion medium is increased, the dispersion medium in the basket can be increased. Dispersion that can greatly improve the efficiency of the dispersion work because the movement or circulation is not hindered and the dispersion pin support has the action of stirring the dispersion medium and the compound in the basket. The equipment could be provided.
[0083]
In addition, since the movement or circulation of the dispersion medium is not hindered in the basket, it is possible to disperse a highly viscous compound without reducing the amount of the dispersion medium contained in the basket. Can also be applied to the dispersion of highly viscous formulations that could not be dispersed.
[0084]
Furthermore, the dispersion apparatus of the present invention was used for dispersion of high-viscosity formulations such as a formulation that is a raw material for cosmetics such as lipstick and foundation, and a formulation that is emulsified by stirring with water and oil. Even in such a case, high dispersion efficiency can be obtained, and furthermore, since the dispersion efficiency is good, for example, a mixture in which particles with high hardness such as alumina are mixed is made into fine particles in a short time. For example, it can be used for a compound which is difficult to disperse with a conventional disperser or takes a long time to disperse.
[Brief description of the drawings]
FIG. 1 is an overall configuration diagram of a mechanism including a dispersion apparatus of the present invention.
FIG. 2 is a cross-sectional view of a main part of the dispersion apparatus of the present invention.
FIG. 3 is a perspective view of a dispersion pin support.
FIG. 4 is a rear view of a dispersion pin support.
FIG. 5 is an exploded view showing another configuration example of the dispersion pin support.
FIG. 6 is a partial perspective view of the side wall of the basket of the present invention.
FIG. 7 is a plan view of a lid plate of the basket of the present invention.
FIG. 8 is a front sectional view of the lid plate of the basket of the present invention.
FIG. 9 is a front view of a baffle plate.
FIG. 10 is a cross-sectional view of a main part of a conventional dispersing apparatus.
FIG. 11 is a perspective view showing a conventional dispersion pin support.
[Explanation of symbols]
10 Dispersing device body
11 Rotation drive mechanism
12 Rotating shaft
13 Rod
14 Dispersion pin
15 Dispersion pin support
151 outer cylinder
152 connecting part
153 Opening (outer cylinder part)
154 Opening (of connecting part)
156 Inner tube
16 Tachometer
18 Introduction blade
20 baskets
22 Cover plate
23 Inclined surface
24 side wall
25 Wire support
26 Mekura side wall
27 wires
28 Wire support hole
29 Bottom wall (Mekra bottom wall)
31 Dispersion medium hole
32 Cover for dispersion medium punch hole
35 Small hole (slit)
37 Dispersion media
38 opening
39 Cylindrical part
391,392 Flange
40 Hollow chamber (of cover plate)
41 motor
42 Bottom (of cover plate)
43 Inner wall (for hollow chamber)
44 Hollow chamber (on the side wall)
46 Shaft for liquid flow
47 Blade for liquid flow
48 motor
50 Lifting device
51 Lifting device body
52a to 52d screw holes
53 Lifting shaft
54 Guide shaft
55 Bracket
56 communication hole
57 Lift valve
58 Lowering valve
60 stirred tank
61 Drain valve
62 wheels
65 Formulations
70a-70d baffle plate

Claims (3)

In a dispersing apparatus for immersing a basket containing a dispersion medium in a stirred tank filled with the composition, and dispersing the composition by rotating a rotating shaft from which a plurality of dispersion pins protrude in the basket.
The dispersion pin is attached to the rotation shaft via a dispersion pin support, and the dispersion pin support includes an inner cylinder portion that is inserted into the rotation shaft and fixed to the outer periphery of the rotation shaft, and a plurality of The outer cylinder part which protrudes a dispersion | distribution pin in the direction opposite to the said rotating shaft, and the connection part which demarcates the space | interval which a dispersion medium can pass between the said rotating cylinder direction of the said inner cylinder part and the said outer cylinder part, the outer cylindrical portion and the connecting portion or the outer cylindrical portion or the connecting portion, provided with the dispersion medium can pass opening Rutotomoni,
The basket is formed of a cylindrical side wall having a large number of small holes, a lid plate that covers the upper opening of the side wall, and a bottom plate that covers the lower part of the side wall. A cylindrical portion inserted into the outer cylindrical portion of the dispersion pin support, and having an opening for inserting the rotating shaft into the basket . A dispersion apparatus characterized by that. Dispersing apparatus according to claim 1, characterized by comprising housing the 95% to 98% of the dispersion medium with respect to the capacity of the basket. The nuclear introducing a blend of the拌槽, dispersing apparatus according to claim 1 or 2, further comprising a cooling mechanism circulating in拌槽to write after cooling again.

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