JPH02207853A - Two vessel centrifugal rotary ball mill - Google Patents

Abstract

PURPOSE:To strongly grind, mix and disperse slurry by constituting the ball mill of a two-vessel structure which is formed of both a centrifugal rotary type ball mill vessel and a slurry circulating vessel. CONSTITUTION:A longitudinal cylindrical crushing chamber case 3 is fixed to a supporter 2 projected from the under part of a top cover body 1. A rotary disk 10 having a circulating agitating part 11 in the lower part is fitted to the lower end of a rotary shaft 5 which is axially supported to a bearing part 9 placed on the upper part of the top cover body 1. A centrifugal rotary type ball mill vessel 19 is constituted by both the chamber case 3 and the rotary disk 10. Furthermore a closed-end slurry vessel 17 joined to the top cover body 1 is provided so as to enclose the vessel 19 from the lower side. By this constitution, slurry introduced into the closed-end slurry tank 17 is strongly ground, mixed and dispersed while the ball mill vessel 19 and the slurry tank 17 are circulated.

Description

[Detailed Description of the Invention] Industrial Application Field The present invention is a two-tank centrifugal rotating ball mill for grinding, mixing, and dispersing slurry for rare earths, ferrite, ceramic capacitors, semiconductor capacitors, ceramic packages, high-grid ICs, etc. It is related to.

Conventional Technology For example, the centrifugal rotary ball mill shown in Japanese Patent No. 49-3846 is a ball mill with a disc mounted on a rotating shaft that protrudes from the bottom of the crushing tank, and has been used since before C1. It has been proven through actual operation that this method is more effective in reducing power and operating time when compared to agitating ball mills.

However, in the above-mentioned centrifugal rotary ball mill, the slurry that has penetrated to the bottom of the disk stays [and is separated from the slurry on the disk], which is the main purpose of grinding, mixing, and dispersing. Although it achieved its full effect, it had a drawback.

In addition, if the grinding tank, stirring pin, and rotating disk, which are wear parts, are made of wear-resistant steel or ceramics such as alumina, if the grinding tank is large, it cannot be made in one piece and must be divided into parts. Since it is manufactured and then assembled using bolts, adhesives, etc., it has the disadvantage of high manufacturing costs.

Problems to be Solved by the Invention The present invention was invented in order to eliminate the above-mentioned drawbacks. There was a problem that the slurry on the lower side remained in a stagnant state and was not sufficiently pulverized, mixed, and dispersed. Further, in the case of manufacturing a large-sized machine, as mentioned above, the manufacturing of the worn parts has to be done in separate parts, resulting in an expensive problem in terms of cost.

The present invention provides a two-tank centrifugal doubling ball mill that eliminates the above-mentioned problems.

Means for Solving the Problems The present invention was invented to solve the above problems.A vertical, cylindrical crushing chamber case is fixed to a support that protrudes from the lower part of the top lid. , a centrifugal rotating ball mill tank having a rotating disk having a circulating stirring section at the bottom attached to the lower end of a rotating shaft supported by a bearing mounted on the upper part of the upper lid; The circulation agitation unit is composed of a bottomed slurry tank joined to the upper lid so as to be included in the side, and the circulation agitation unit is a two-tank centrifugal type with a protrusion provided at the lower part of a rotating disk, or a two-tank centrifugal rotation unit provided with agitation blades. It is a type ball mill.

Function The present invention has the above-mentioned configuration, so when the pole is inserted into the crushing chamber case, the slurry is put into the slurry tank, and the rotating disk is rotated, the circulation agitator at the bottom of the rotating disk is activated. Due to the action of the C1 slurry, a rotational upward flow occurs, and it hits the inner wall of the slurry tank, rises, and flows into the grinding chamber from the upper end of the grinding chamber booth. On the other hand, the grinding chamber case H and Q balls individually rotate violently on their own rotating disks, and as a whole they cause a circular motion of rotation on the inner wall of the grinding chamber case C.

While passing between the poles, the inflowing slurry is pulverized due to friction and shear between the poles and the material to be crushed.
Mixed and dispersed.

Due to the movement of the pole, the slurry that has undergone the action of the grinding process for a certain period of time exits the grinding chamber case through the gap between the grinding chamber case and the rotating disk. The slurry is circulated by the action of the circulation agitation section and flows into the crushing chamber case again.

As described above, the slurry is repeatedly circulated and is strongly pulverized, mixed, and dispersed.

Example Embodiments of the present invention will be described based on the drawings.

In Figure 1, °C, l is the upper lid body, and °C1 is the input port 4.
, attach the input port lid ρ, and install a plurality of supports 2 at the bottom.

Reference numeral 3 denotes a cylindrical crushing chamber case, which is fastened and connected to the support column 2 by means of a port 4.

A bearing case 6 is placed on the upper side of the upper lid 1, and inside the case, the rotating shaft 5 is supported by an upper pole bearing 77 and a lower pole bearing 8.8. The upper end of the bearing case 6 has a bearing booth upper station, and the lower end is sealed by a bearing case lower cover n.

A rotating disk lO is attached to the lower end of the rotary shaft 5 which is supported as described above, and is fixed by the key 15, collar 14 and tightening tool 13. A circulating agitator 11 or a protruding agitating blade is provided to strongly promote slurry circulation and agitation.In the drawings of the embodiment, each rotating disk 10 is shown in one stage, but it is possible to use a plurality of rotating disks. It is also conceivable to use it in multiple stages.The above forms the centrifugal rotating ball mill tank 19.

Note that a gap is provided between the lower end of the crushing chamber case 3 and the outer peripheral edge of the rotating disk 10.

A pole 16 is placed on a rotating disk in a centrifugal rotating ball mill tank 19 and the ball mill is operated.

Grinding chamber case 3 of the centrifugal rotating ball mill tank 19 mentioned above
Attach the circulation slurry tank 17 from the bottom so as to enclose it, attach it to the clamp base, and connect and fix it to the upper lid body 1.
[There is. A jacket slide is attached to the outer periphery of the circulation slurry tank 17 and used as necessary to maintain a temperature suitable for grinding, mixing, and dispersing the slurry.

The axis of the centrifugal rotating ball mill tank 19 and the core of the circulating slurry tank 17 are eccentric. This is circulating slurry tank 1
This is to further promote the flow of the slurry into the crushing chamber case 3 by the movement of the rotational circulation flow of the slurry within the grinding chamber case 3.

The above-mentioned components are connected to the bearing part 9 described above.

A motor 31 is mounted on the motor base 32 as a pedestal on the side facing the bearing part 6.A driving side V-pulley is attached to the motor shaft, and a driven side V-pulley is attached to the rotating shaft 5. Attach the field and attach both sides to the V bell) 29°
I am able to exercise. ■A safety cover is installed around belt 4 to prevent danger.

The method for taking out the slurry from the circulation slurry tank 17 is to remove the removal hole plug 5 and take it out, or take it out using a valve mechanism (not shown) or the like. Once the size is reduced, as shown in FIG. 7, a lift is used to remove the slurry from the upper lid 1 while keeping it in the circulating slurry tank 17.

Effects of the Invention As described above, the present invention can powerfully perform pulverization, mixing, and dispersion while circulating between the centrifugal rotating ball mill tank and the circulation slurry tank 17 without stagnation.

Since even a small crushing chamber can perform a sufficient function, it can be provided at a low cost even in terms of the cost of worn parts.

Furthermore, due to the above-mentioned remarkable effects, it can be operated for drinking a small number of balls, and is also effective in terms of pole replacement and cleaning.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal sectional view showing one embodiment of the present invention. FIG. 2 is a top view when protruding stirring blades are provided at the bottom of the rotating disk. Third
The figure is a longitudinal cross-sectional view of a case where protruding stirring blades are provided at the bottom of a rotating disk. FIG. 4 is a cross-sectional view seen from above when a circulating stirring blade is provided at the bottom of the rotating disk. FIG. 5 is a longitudinal sectional view showing an embodiment in which one rotating disk is provided in one stage. Figure 6 shows two rotating disks.
FIG. 3 is a vertical cross-sectional view showing an embodiment in the case of stages. FIG. 7 is an overall external view of the slurry removal method in which a lift is used, and the arrows in the figure indicate the movement of the pole and the circulation flow of the slurry. Also, the line a in FIGS. 5 and 6 shows the top surface of the movement of the slurry. l...Top lid body 2...Strut 3...Crushing chamber case 5...
Rotating shaft 9...Bearing part 10...Rotating disk 11...Circulating stirring blade ν...Protruding stirring blade 17...Circulating slurry tank 19...Centrifugal rotating ball mill tank Patent applicant Shinmai Kikai Seisakusho Co., Ltd.%7 Figure 15 Figure 40 4 (J

Claims (3)

[Claims] (1) A circulating agitation unit is attached to the lower end of the rotary shaft which is vertically fixed to the cylindrical crushing chamber case and placed on the upper part of the upper lid, on a support that protrudes from the lower part of the upper lid. It is characterized by consisting of a centrifugal rotating ball mill tank with a rotating disc attached at the bottom, and a bottomed circulation slurry tank joined to the upper lid body so as to enclose the centrifugal rotating ball mill tank from below. A two-tank centrifugal rotating ball mill. (2) The circulation stirring section has stirring blades provided at the bottom of the rotating disk.
A two-vessel centrifugal rotary ball mill according to claim 1. (3) The two-tank centrifugal rotary ball mill according to claim 1, wherein the circulation stirring section has protruding stirring blades provided at the lower part of the rotating disk.