Wear-resistant liner with optimized ball milling effect and ball mill

Abstract

The utility model discloses a wear-resistant liner with an optimized ball milling effect and a ball mill, and belongs to the technical field of ball milling equipment, the wear-resistant liner comprises a bottom wall, a cylindrical outer side wall and an inner inclined side wall, the top end of the inner inclined side wall is connected with the top of the outer side wall, the bottom end of the inner inclined side wall is connected with the bottom wall, and the inner inclined side wall is connected with the bottom wall. The ball mill further comprises a cylindrical ball mill outer shell, the wear-resistant liner is arranged in the ball mill outer shell, the bottom wall is attached to the bottom face of the inner side of the ball mill outer shell, and the outer side wall is attached to the inner side wall of the ball mill outer shell. The ball mill stirring paddle is used for solving the problems that balls stirred by an existing ball mill stirring paddle are only difficult to fully disperse powder at corners, and slurry is prone to caking and gelling.

Description

Technical Field

[0001] The utility model relates to the technical field of ball milling equipment, and particularly relates to a wear-resistant lining and a ball mill with optimized ball milling effect. Background Technique

[0002] Ball mills are widely used. For example, in the preparation of electrostatic chuck ceramics, the preparation of electrostatic chuck ceramics requires a tape casting process, and uniformly dispersed ceramic slurry is the key to tape casting. The structure of the ball milling equipment is particularly important for the preparation of uniformly dispersed slurry. In the existing mature ball milling equipment in the market, the ball milling process adopts the method of stirring or driving ball milling. When preparing ball mill dispersed slurry for different materials such as ore blocks, metal powder materials, and ceramic powder particles, there are still phenomena such as agglomeration and gelation with poor dispersion effects. The ball milling dispersion effect for the nano-scale or micro-scale powder materials used in electrostatic chuck ceramic sheets is even worse. For example, in the above phenomenon example, when the powder, solvent, dispersant, etc. are poured into the ball mill, there is a distance between the bottom of the stirrer and the bottom of the barrel, and there is also a gap between the end of the stirrer blade and the barrel wall. When the stirrer paddle rotates at a high speed to ball mill and stir the powder, since the angle between the side wall and the bottom of the general market ball mill is designed as a right angle, it is easy to have insufficient wetting of the powder and the solvent at the angle position between the side wall and the bottom of the ball mill. The balls stirred by the stirrer paddle are difficult to fully disperse the powder in this corner, and the slurry is prone to agglomeration and gelation. Summary of the Utility Model

[0003] The technical problem to be solved by the utility model is to provide a wear-resistant lining and a ball mill with optimized ball milling effect to solve the problems proposed in the background technique.

[0004] To solve the above technical problem, on the one hand, the utility model discloses a wear-resistant lining with optimized ball milling effect. The wear-resistant lining includes a bottom wall, a cylindrical outer side wall, and an inner inclined side wall. The top end of the inner inclined side wall is connected to the top of the outer side wall, and the bottom end of the inner inclined side wall is connected to the bottom wall.

[0005] Preferably, the shape of the inner inclined side wall in the longitudinal section is a step, an arc, or an oblique straight line.

[0006] Preferably, the wear-resistant lining is made of any one of hard steel, high manganese steel, chromium steel, cast iron, nylon rubber, and polytetrafluoroethylene.

[0007] On the other hand, the utility model discloses a ball mill with optimized ball milling effect. The ball mill includes the above-mentioned wear-resistant lining.

[0008] Preferably, the ball mill further includes a cylindrical ball mill housing, the wear-resistant liner is disposed inside the ball mill housing, the bottom wall is fitted to the inner bottom surface of the ball mill housing, and the outer side wall is fitted to the inner side wall of the ball mill housing.

[0009] Preferably, the wear-resistant liner is integrally formed with the ball mill housing or is embedded in the ball mill housing when the ball mill housing is fabricated.

[0010] Preferably, the ball mill further includes a stirring paddle. The stirring paddle includes a rotating shaft, on which upper stirring blades and lower stirring blades are provided. The length of the lower stirring blades is greater than that of the upper stirring blades. The lower stirring blades are disposed at the bottom of the rotating shaft, and the upper stirring blades are disposed above the lower stirring blades. A through hole is provided at the bottom of the ball mill housing, and a filter screen is provided in the through hole.

[0011] Adopting the above technical solution, the following beneficial effects are achieved:

[0012] This ball mill can uniformly disperse nano or micron powder materials in a dispersion medium, meeting the requirements during the preparation of electrostatic chuck ceramic wafers.

[0013] It solves the problems of uneven dispersion such as fragmentation, agglomeration, and gelation that may occur during the ball milling and dispersion process of nano or micron powder materials.

[0014] It can improve the ball milling efficiency and reduce the preparation cost of nano ceramic slurries. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 FIG. is a schematic cross-sectional structure diagram of the cooperation between the wear-resistant liner of the present invention and the ball mill

[0016] Figure 2 FIG. is a schematic cross-sectional structure diagram of the wear-resistant liner of the present invention;

[0017] Figure 3 FIG. is another schematic cross-sectional structure diagram of the wear-resistant liner of the present invention;

[0018] Figure 4 FIG. is still another schematic cross-sectional structure diagram of the wear-resistant liner of the present invention;

[0019] Figure 5 FIG. is still another schematic cross-sectional structure diagram of the wear-resistant liner of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0020] The following further describes the specific embodiments of the present utility model in conjunction with the accompanying drawings. It should be noted here that the description of these embodiments is used to help understand the present utility model, but does not constitute a limitation to the present utility model. In addition, the technical features involved in the various embodiments of the present utility model described below can be combined with each other as long as they do not conflict with each other.

[0021] Embodiment 1

[0022] Reference Figures 1 to 5 , the wear-resistant liner includes a bottom wall 1, a cylindrical outer side wall 2, and an inner inclined side wall 3. The top end of the inner inclined side wall 3 is connected to the top of the outer side wall 2, and the bottom end of the inner inclined side wall 3 is connected to the bottom wall 1;

[0023] The wear-resistant liner is used on a ball mill and is installed at the inner bottom of the cylindrical ball mill housing 4. For the current general ball mill, the angle between the side wall and the barrel bottom is designed as a right angle. At the position of the angle between the ball mill side wall and the barrel bottom, it is easy to have insufficient wetting of the powder and solvent, and the balls stirred by the stirring paddle are difficult to fully disperse the powder in this corner, and the slurry is prone to agglomeration and gelation. By setting the wear-resistant liner, the phenomenon of agglomeration and gelation of the slurry at the bottom connection of the ball mill housing 4 is avoided, and the stirring is more sufficient;

[0024] Specifically, in the preparation of the electrostatic chuck ceramic sheet, the preparation of the electrostatic chuck ceramic sheet requires a tape casting process, and the uniformly dispersed ceramic slurry is the key to tape casting. The structure of the ball mill equipment is particularly important for the preparation of uniformly dispersed slurry;

[0025] Reference Figures 1 to 5 , the shape of the inner inclined side wall 3 in the longitudinal section is a step or an arc or an oblique straight line. Specifically, the inner inclined side wall 3 gradually becomes larger from bottom to top. Its bottom is connected to the bottom wall 1, and its top is connected to the top of the outer side wall 2. It is installed in the ball mill outer housing 4, changing the right-angle connection at the inner bottom of the ball mill outer housing 4 into the inner inclined side wall 3. The arc of the inner inclined side wall 3 can be in a convex or concave shape, which is specifically set according to needs. No matter what shape, it cannot interfere with the moving parts of the ball mill, such as not interfering with the lower stirring blade 5;

[0026] The wear-resistant liner is made of any one of hard steel, high manganese steel, chromium steel, cast iron, nylon rubber, and polytetrafluoroethylene, and is selected according to actual conditions or requirements.

[0027] Embodiment 2

[0028] Reference Figure 1 , a ball mill with an optimized ball milling effect, which includes the above-mentioned wear-resistant liner;

[0029] The ball mill further includes a cylindrical ball mill housing 4. Wear-resistant liners are arranged inside the ball mill housing 4. The bottom wall 1 of the wear-resistant liner is in contact with the inner bottom surface of the ball mill housing 4, and the outer side wall 2 of the wear-resistant liner is in contact with the inner side wall of the ball mill housing 4, filling the right-angle connection at the bottom of the ball mill housing 4 to solve the problems raised in the background art;

[0030] The wear-resistant liner is integrally formed with the ball mill housing 4 to avoid gaps that may cause the gaps to be filled with slurry or the wear-resistant liner to be embedded when manufacturing the ball mill housing 4;

[0031] The ball mill further includes a stirring paddle. The stirring paddle includes a rotating shaft 10, which is driven to rotate by a motor 8. Upper stirring blades 6 and lower stirring blades 5 are provided on the rotating shaft 10. Other stirring blades 7 can also be provided between the upper stirring blades 6 and the lower stirring blades 5. Their lengths can be the same or increase successively from top to bottom. The length of the lower stirring blade 5 is greater than that of the upper stirring blade 6, so as to stir more fully. The lower stirring blade 5 is arranged at the bottom of the rotating shaft 10 to stir the slurry at the bottom, and the upper stirring blade 6 is arranged above the lower stirring blade 5. A through hole is provided at the bottom of the ball mill housing 4, and the through hole is connected to an external pipe 9 for discharging the internal slurry. A filter screen is provided in the through hole.

[0032] The above has described the embodiments of the present invention in detail with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. For those skilled in the art, without departing from the principle and spirit of the present invention, various changes, modifications, substitutions, and variations made to these embodiments still fall within the protection scope of the present invention.

Claims

1. A wear-resistant liner with optimized ball milling effect, characterized in that, The wear-resistant liner includes a bottom wall, a cylindrical outer side wall, and an inner inclined side wall. The top end of the inner inclined side wall is connected to the top of the outer side wall, and the bottom end of the inner inclined side wall is connected to the bottom wall.

2. The wear-resistant liner with optimized ball milling effect according to claim 1, wherein, The shape of the inner inclined side wall in the longitudinal cross-section is a step, an arc, or an inclined straight line.

3. The wear-resistant liner with optimized ball milling effect according to claim 1, characterized in that, The wear-resistant liner is made of any one of hard steel, high manganese steel, chromium steel, cast iron, nylon rubber, and polytetrafluoroethylene.

4. A ball mill with optimized ball milling effect, characterized in that, The ball mill includes the wear-resistant liner according to any one of claims 1 to 3.

5. A ball mill having an optimized ball milling effect according to claim 4, characterized in that, The ball mill further includes a cylindrical ball mill housing. The wear-resistant liner is disposed inside the ball mill housing. The bottom wall is in contact with the inner bottom surface of the ball mill housing, and the outer side wall is in contact with the inner side wall of the ball mill housing.

6. A ball mill with optimized ball milling effect according to claim 5, characterized in that, The wear-resistant liner is integrally formed with the ball mill housing or is embedded in the ball mill housing when the ball mill housing is manufactured.

7. A ball mill with optimized ball milling effect according to claim 5, characterized in that, The ball mill further includes a stirring paddle. The stirring paddle includes a rotating shaft. Upper stirring blades and lower stirring blades are provided on the rotating shaft. The length of the lower stirring blades is greater than the length of the upper stirring blades. The lower stirring blades are disposed at the bottom of the rotating shaft, and the upper stirring blades are disposed above the lower stirring blades. A through hole is provided at the bottom of the ball mill housing, and a filter screen is provided in the through hole.

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