JPS60255154A - Polygonal vessel for pulverizer - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] The present invention improves the pulverization effect by attaching it to a pulverizer such as a ball mill, sand mill, or sand grinder that uses balls, beads, and stone particles as grinding media. Concerning containers for.

More specifically, by making the inner surface of the container of the pulverizer into a polygon (a polygon with an apex angle between 144 degrees and 186.4 degrees), Container that improves the kneading effect and pulverization effect by making the flow of the directional grinding media and the material to be ground into an irregular flow and increasing the chances of contact between the grinding media and the material to be ground. It is.

Conventional pulverizers of this type have undergone various improvements in order to increase the crosstalk effect and pulverization effect.

(A) In particular, for wet grinders that fix the container and agitate the inside, conventional methods generally involve improving the shape of the stirring blades, stirring plates, etc., or changing the grinding media according to the conditions. A method is being used to increase the effectiveness of the product.

(B) On the other hand, regarding ball mills, other than the conventional pot type, a vibration type is used, but the form remains the same, and the grinding media is changed as described above.

However, as the viscosity increases, the crosstalk effect and the pulverization effect may deteriorate if the inner surface is circular. In extreme cases, there is a risk of slipping between the container surface and the contents. For this reason, conventional machines have improved blades and plates to increase the pulverization effect and crosstalk effect.

FIG. 5 is a schematic diagram showing an example of the container and stirring section of the conventional pulverizer of the method (A). There is a rotating shaft (2) at the center of a cylindrical container (1) with a perfect circular circumference.
2) is attached with a plate (3) or rod (4), and the rotational movement of the rotating shaft (2), plate (3), or rod (4) gives kinetic energy to the contents and reduces the collision force between the grinding media. The structure is such that the material to be crushed is crushed by shearing force.

However, in the case of simple disks (5), since the effect is most often found in the circumferential portion of these disks (5), the range in which the effect is produced is narrow compared to the entire contents. Therefore, various improvements have been made to improve the stirring effect and crosstalk effect. Generally, the plate (3) is a simple disk (5), but the plate (3) is a simple disk (5), but the plate (3) is a simple disk (5).
Or triangle (7), ring shape (8), 1 small ring
Arranged by 20 degrees (9), hole-shaped (10), etc.
The stirring vane type has round rods (11) arranged symmetrically, thin plate-like (
12) has been adopted.

All of these improvements are intended to increase the crosstalk effect, promote the movement of contents, and provide an overall crushing effect.

The grinding media used is steel, special glass, ceramic, flint stone, etc.

It is used as a method to increase the effect by changing the size depending on the conditions.

FIG. 6 is a schematic diagram showing an example of a conventional ball mill container of the method (B). Similar to (A), a cylindrical container (1a) with a perfect circular circumference is used, and the grinding media and the material to be crushed are placed inside, and the cylindrical container (1a) itself is rotated or vibrated to spread the contents. It has a structure that provides kinetic energy and exhibits the same effect as method (A). However, in method (B), since it is impossible to improve the internal structure, the processing time is long in order to obtain the crosstalk effect and the crushing effect.

3- However, since it is a cylindrical container with a perfect circular circumference, the movement of the contents is a constant circular movement, and the movement of the grinding media, which exerts the crosstalk effect and pulverization effect, is particularly high. When it becomes concentrated or becomes powdered, the effect is suppressed by being carried by the flow of fluid, so the pulverizing effect decreases and approaches a simple circular motion. In the case of a vibrating mill, vibrations are used to effectively move the ball to prevent this constant circular motion, but machines and grinding
There is a problem with the durability of the media.

In order to prevent this situation from occurring, the various improvements mentioned above have been made, but the improvements are not sufficient and the effect is not achieved until the power is increased.

The present invention is completely different from the conventional improvement of the internal stirring structure and reinforcement of external energy as described above.The present invention involves changing the shape of the pulverization container, setting a specific angle to the container, and adjusting the hardness of the material of the container. By limiting the content, the movement of the contents is not biased only in a fixed movement direction, but more complex fluid movement is generated.
The object of the present invention is to provide a container that has performance that provides similar effects, regardless of whether it has a fixed structure or a structure in which the container body moves.

4- The present invention will be explained below based on the drawings.

FIGS. 1 and 2 are schematic diagrams showing essential parts of a sand grinder according to an embodiment of the present invention. As shown in the figures, the shape of the present invention is cylindrical like the conventional sand grinder, but The circular inner surface (1) of the polygonal container (13) of the present invention
4) The apex angle (1
5), and this specified vertex angle (15), that is, 14, which is the most important in the present invention.
By setting the temperature between 4 degrees and 186.4 degrees, the contents do not have a steady flow but a more complex flow.
In particular, unlike other contents, the grinding media has a double weight and is accelerated, making this complex flow even more effective and ensuring a reliable grinding effect.

In the present invention, by having such an apex angle, it is possible to achieve a more effective crosstalk effect and fine pulverization effect with a simple disk-shaped method without improving the stirring plate, blades, etc. Become.

FIG. 4 is a schematic diagram of the main parts of a ball mill showing an embodiment of the present invention.

As shown in the figure, the shape of the present invention is cylindrical like the conventional ball mill, and has the same configuration as that shown in FIG. 1 above. The circular inner surface (14a) of the polygonal container (1aa) of the present invention is composed of a polygon with a different apex angle (15a) depending on the capacity and the object of grinding, and this specified apex angle (1
5a), that is, between 144 degrees and 186.4 degrees, which is the most important angle in the present invention, as shown in FIG. 3, it is possible to achieve a greater crushing effect than before.

In the case of this method, the effect can be expected without increasing the external power or lengthening the time.

Both the sand grinder type shown in Fig. 1 and the ball mill type shown in Fig. 4 can obtain the kneading effect and the grinding effect without applying extreme force, so they do not destroy the characteristics, crystals, etc. of the object to be ground.
Since both inorganic and organic compounds work in the same way, pigments,
Enables the pulverization of industrial raw materials such as dyes and clay minerals,
In addition to coloring properties, toning properties, glossiness, fixing properties, etc., it becomes possible to stabilize and improve the performance of ceramic products.

However, all the apex angles of the polygonal container should be made equal angles in the same container, and the surfaces existing between each apex angle should be flat, concave,
You may freely choose to have a convex surface, a semi-cylindrical shape, etc., and to install the container vertically, horizontally, or in a specific manner.

As described above, the apex angles (15) and (15a) are most important in the present invention, and the apex angles (15) and (15a) are
If the temperature is 144 degrees or less, the mechanical load will increase even if the flow is complicated, and no pulverizing effect can be expected. Furthermore, the apex angle (15
) and (15a) are 188.4 degrees or more, the result is similar to that of a conventional cylindrical container with a perfectly circular circumference, the unique flow shown in the present invention does not occur, and the movement of the contents is Since the motion of the grinding media, which is a constant motion and exhibits a crosstalk effect and a fine pulverization effect, approaches a simple circular motion, the pulverization effect cannot be expected as in the case of 144 degrees or less.

The number of corners and the apex angle of the polygonal container of the present invention are related to the capacity, and when the capacity is small, the angle becomes narrower.

The larger the capacity, the wider the angle. however.

If the length is longer than the diameter, it will change accordingly.

The reason why the Vickers hardness of the material is set to i, aoo or more lies in the abrasiveness of the material. Water resistant, acid resistant,
Chromium alloys are commonly used due to their alkali resistance (typically metal oxides), ores, and organic compounds (dyes).
In the case of white substances, light-colored substances, and bright-colored substances, they will be colored black. Therefore, in terms of wear resistance, the material and Vickers hardness should be set to 1. It was set to be at least aoo. The material is not limited as it differs depending on the object to be crushed and necessity.

Next, the results of a comparison test between the conventional container and the container of the present invention will be shown.

(1) Comparison of grinding of heavy calcium carbonate using a conventional SUS cylindrical container (A) and a polygonal container of the present invention (B), as well as glass beads (1) and special material beads (II) do.

Heavy calcium carbonate concentration = 60% solids (dispersed only in water, no additives such as resins added).

(n) Pigment cyanine blue was crushed in a conventional SUS cylindrical container (A), a polygonal container of the present invention (B), and a glass container.
Comparison will be made using beads (1) and beads (n) made of special material.

20% cyanine blue, 10% calcium carbonate,
4#J Yuhachi 1 Ward Fee Wrath Beat 1+ 7 I+No+-J
Comparison of processing times is (B) - (Time to be about the same with old as 100).

As mentioned above, even if you use beads made of a special material, it is better to use a polygonal container made of a special material and use glass beads.
I'm getting good results. This result shows that the polygonal container made of a special material with a limited angle sufficiently exhibits the crosstalk effect and the pulverization effect.

If processing can be done in a short time, productivity will improve and production volume will increase, so the scale of factories and processes can be reduced. Alternatively, increasing production on the same scale will lower raw material prices, which will ultimately lead to lower manufacturing prices.

Does the present invention have one or more unprecedented features? It is a container for a pulverizer that is effective in modern industries that require finely powdered raw materials because it has a long life and exhibits a high degree of effectiveness.

[Brief explanation of drawings]

FIG. 1 is a perspective view of an embodiment of a polygonal container for an actual crusher according to the present invention. FIG. 2 is a sectional view taken along line AA' in FIG. 1. FIG. 3 is a sectional view taken along line BB' in FIG. 1. FIG. 4 is a schematic perspective view and an operational view of the main parts of another embodiment. FIG. 5 is a schematic diagram showing an example of a container and a stirring section of a conventional pulverizer. FIG. 6 is a schematic diagram showing an example of a conventional ball mill container of the method (B). Patent Applicant Tetsunosuke Oharu Figure 1 [7 also 11- Figure 4 Figure 5 (IV) (11) Figure 6 (II) Procedural amendment (method) % formula % 1, Indication of case 1988 patent application No. 1.10904
No. 2. Title of the invention Polygonal container for pulverizer 3. Relationship to the case of the person making the amendment Patent applicant address 1-11-4-5024 Maruyama, Nakano-ku, Tokyo.
Date of amendment order: September 25, 1980 5. Subject of amendment: [Brief explanation of drawings column J, column 6 of the specification] Contents of amendment (1) [Brief explanation of drawings column J, column 6 of the specification] 11
Page 6th line [FIG. 4 is a schematic perspective view and operational view of the main parts of another embodiment. '' to the 10th line of the same page, ``Schematic diagram showing an example of. Oblique view. Fig. 4 (n) is a view of the action of the grinding media by the equilateral and equiangular inner surfaces inside another embodiment. Fig. 4 (11) shows the grinding by the circular inner surfaces of the conventional fine crusher container. Action diagram of the medium. Figure 5 (j) is a sectional view showing an example of the container and stirring part of a conventional pulverizer. The left side of the center is a rod-shaped one, and the right side is a plate-shaped stirring part. Figure 5 (11) is a conventional pulverizer. Fig. 5(m) is a schematic top view and a sectional view showing an example of a stirring plate of a conventional pulverizer. FIG. 5 (IV) is a schematic side view showing an example of a stirring blade of a conventional pulverizer. FIG. 6(1) is a vertical sectional view showing an example of a conventional ball mill container. FIG. 6(II) is a horizontal sectional view showing an example of a conventional ball mill container. ”

Claims (1)

[Claims] In a pulverizer that uses balls, beads, etc., to pulverize grains or powders of inorganic and organic substances in a dry and wet process, the shape of the inner surface of the pulverizer is such that each apex angle is 144
It is a polygonal shape set in the range of 186.4 degrees from 186.4 degrees,
A container characterized in that the material of the container has a hardness of 1.300 or more on the Vickers hardness scale.