Ball milling tank and ball mill
The ball mill with a spiral scraper addresses the issue of slurry adhesion by effectively scraping and dispersing it, ensuring complete grinding and uniformity.
Patent Information
- Application Number
- CN202420555687.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-20
- Publication Date
- 2024-12-17
- Estimated Expiration
- 2034-03-20
AI Technical Summary
The viscosity of ceramic slurry during ball milling leads to adhesion to the inner wall of the ball mill, resulting in incomplete grinding.
A ball mill equipped with a scraper having a spiral structure that contacts the inner wall and is driven to rotate, scraping off adhered slurry and enhancing slurry dispersion through its design.
Facilitates sufficient grinding of the slurry by removing adhered material and improving slurry uniformity and dispersion within the mill.
Smart Images
Figure CN222174286U_ABST
Abstract
Description
Technical Field
[0001] The present application belongs to the technical field of ceramic substrate slurry preparation, and more specifically, relates to a ball mill and a ball mill. Background Art
[0002] The ball mill is a key equipment for crushing materials after they are broken. A certain number of grinding balls are loaded into its tank as grinding media. The ball mill is suitable for grinding various materials and is widely used in mineral processing, building materials and chemical industries. It can be divided into two types of ball milling: dry and wet. The ball milling currently used to prepare ceramic slurry is basically a wet ball milling method. However, during the ball milling process of ceramic slurry, due to the excessive viscosity of the slurry, the slurry is easy to adhere to the inner wall of the ball mill tank, resulting in insufficient ball milling. Utility Model Content
[0003] The purpose of the embodiments of the present application is to provide a ball mill and a ball mill to solve the technical problem that the slurry adheres to the inner wall of the ball mill and cannot be fully ground.
[0004] To achieve the above purpose, the technical solution adopted in this application is:
[0005] The first aspect of the present application provides a ball mill, comprising a tank body and a wall scraper arranged in the tank body; the wall scraper comprises a scraper, a bracket and a connecting shaft for connecting to an external driving device, the scraper is arranged on the bracket, the scraper has a spiral structure and the outer edge of the scraper extending along the length direction contacts the inner wall of the tank body, and one end of the connecting shaft extends out of the tank body.
[0006] Preferably, there is one scraper; or, there are more than two scrapers, and the scrapers are arranged on the bracket at intervals along the circumferential direction.
[0007] Preferably: the bracket includes an upper bracket and a lower bracket, the upper bracket is arranged above the lower bracket, the axis of the connecting shaft is colinear with the axis of the tank body and the connecting shaft passes through the upper bracket and the lower bracket in sequence, and the upper and lower ends of the scraper are respectively connected to the upper bracket and the lower bracket.
[0008] Preferably: the upper bracket and the lower bracket are both rod-shaped, there are two scrapers, two ends of the upper bracket are respectively connected to the tops of the two scrapers, and two ends of the lower bracket are respectively connected to the bottoms of the two scrapers.
[0009] Preferably: the upper bracket and the lower bracket are arranged vertically; the scraper is in the shape of a long strip, and the scraper includes an upper arc section, a middle connecting section and a lower arc section, the upper arc section, the middle connecting section and the lower arc section are connected in sequence, the concave side of the upper arc section faces upward, and the concave side of the lower arc section faces downward.
[0010] Preferably: the bottom surface of the lower bracket contacts the inner bottom surface of the tank body, and the circumferential side surface of the lower bracket contacts the inner side wall of the tank body; the top surface of the upper bracket contacts the inner top surface of the tank body, and the circumferential side surface of the upper bracket contacts the inner side wall of the tank body.
[0011] Preferably: the scraper is detachably connected to the upper bracket and the lower bracket respectively; plugs are provided at the upper and lower ends of the scraper, and the plugs at both ends of the scraper are respectively inserted into the sockets on the upper bracket and the sockets on the lower bracket; or, the scraper is fixedly connected to the upper bracket and the lower bracket by screws or bolts.
[0012] Preferably: the upper bracket and the lower bracket are both provided with a middle hole, the connecting shaft is inserted into the middle holes of the upper bracket and the lower bracket, and at least one of the upper bracket and the lower bracket is detachably connected to the connecting shaft.
[0013] Preferably: the tank body is detachably connected to the wall scraper; the tank body comprises a cylinder, a tank cover and a bottom plate, the tank cover and the bottom plate are respectively arranged at the upper and lower ends of the cylinder, at least one of the tank cover and the bottom plate is detachably connected to the cylinder, and the two ends of the connecting shaft pass through the tank cover and the bottom plate respectively.
[0014] A second aspect of the present application provides a ball mill, comprising a driving device and the ball mill jar, wherein the driving device is connected to a connecting shaft in the ball mill jar.
[0015] The beneficial effects of the present application are as follows: compared with the prior art, the ball mill provided by the present application, by arranging a scraper in contact with the inner wall of the tank body, enables the scraper to scrape off the slurry attached to the inner wall of the ball mill when rotating, that is, the inner wall of the tank body is scraped to facilitate sufficient grinding of the slurry; in addition, the scraper is arranged in a spiral structure, which can better stir the slurry in the tank body, so that the upper and lower layers of the slurry flow quickly, thereby improving the uniformity of slurry dispersion. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.
[0017] Figure 1 A schematic diagram of the structure of a ball mill provided in an embodiment of the present application;
[0018] Figure 2 A schematic cross-sectional view of a ball mill provided in an embodiment of the present application;
[0019] Figure 3 for Figure 2 AA section view;
[0020] Figure 4 A schematic diagram of the structure of a wall scraper provided in an embodiment of the present application;
[0021] Figure 5 A schematic top view of a wall scraper provided in an embodiment of the present application;
[0022] Figure 6 A schematic diagram of the structure of the scraper provided in an embodiment of the present application.
[0023] Among them, the reference numerals in the figure are:
[0024] 1- ball mill;
[0025] 11-tank body; 12-wall scraper;
[0026] 111-tank cover; 112-cylinder body; 113-bottom plate;
[0027] 121-scraper; 122-connecting shaft; 123-upper bracket; 124-lower bracket; 125-connecting nut; 126-first bolt; 127-second bolt
[0028] 1211 - plug; 1212 - upper arc section; 1213 - middle connecting section; 1214 - lower arc section. DETAILED DESCRIPTION
[0029] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.
[0030] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.
[0031] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.
[0032] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.
[0033] The ball mill is a key equipment for crushing materials after they are broken. The ball mill usually includes a ball mill 1, in which a certain number of grinding balls are loaded as grinding media. However, during the ball milling process of the ceramic slurry in the ball mill 1, the slurry is easily attached to the inner wall of the ball mill 1 due to its high viscosity, resulting in incomplete ball milling.
[0034] Based on the above problems, the present application provides a ball mill 1, by arranging a scraper 121 in contact with the inner wall of the tank body 11 inside the tank body 11, so that the scraper 121 can scrape off the slurry attached to the inner wall of the ball mill 1 when rotating, that is, the inner wall of the tank body is scraped to facilitate sufficient grinding of the slurry.
[0035] See also Figure 1-Figure 6 , the ball mill 1 provided in the embodiment of the present application is described in detail in conjunction with the accompanying drawings.
[0036] See also Figure 1 A ball mill 1 comprises a tank body 11 and a wall scraper 12 arranged in the tank body 11; the wall scraper 12 comprises a scraper 121, a bracket and a connecting shaft 122 for connecting to an external driving device, the scraper 121 is arranged on the bracket, the scraper 121 has a spiral structure and the outer edge of the scraper 121 extending along the length direction contacts the inner wall of the tank body 11, and one end of the connecting shaft 122 extends out of the tank body 11.
[0037] The bracket is used to support the scraper 121, and the external driving device is connected to the bracket through the connecting shaft 122. When the driving device is started, the scraper 121 can be driven to rotate through the connecting shaft 122 and the bracket; since the outer edge of the scraper 121 extending along the length direction contacts the inner wall of the tank body 11, the scraper 121 can scrape the inner wall of the tank body 11 when it rotates, and the slurry attached to the inner wall of the ball mill can be scraped off. The scraped slurry enters the effective grinding area in the tank body and can be ground again, so as to facilitate sufficient grinding of the slurry.
[0038] The scraper 121 provided in this embodiment not only limits the position of the scraper 121, that is, the outer edge of the scraper 121 extending along the length direction contacts the inner wall of the tank body 11, but also limits the shape of the scraper 121, that is, the scraper 121 has a spiral structure. The scraper 121 with a spiral structure can better stir the slurry in the tank body 11, so that the upper and lower layers of the slurry flow quickly, thereby improving the uniformity of the slurry dispersion.
[0039] Regarding the number of scrapers 121, in one embodiment, there is one scraper 121. In this case, the number of spiral turns of the scraper 121 can be set to be more than one turn, and of course, the number of spiral turns of the scraper 121 can also be set to be less than one turn. In the case where the number of spiral turns of the scraper 121 is less than one turn, the angle range of the rotation angle of the scraper 121 is preferably greater than 90°. Regarding the spiral angle, the central angle formed by the projection of the starting section and the terminal end of the scraper 121 on the bottom surface of the tank body 11 and the center of the bottom surface of the tank body 11 is the spiral angle.
[0040] Regarding the number of scrapers 121, in one embodiment, there are more than two scrapers 121, and each scraper 121 is arranged on the bracket at intervals along the circumferential direction, and preferably the scrapers 121 are evenly spaced along the circumferential direction on the bracket. When there are more than two scrapers 121, it is preferred that the angle range of the rotation angle of the scraper 121 is not greater than 90°, so that the scraper is easy to produce and process while satisfying the requirement of stirring the slurry in the tank.
[0041] Regarding the length of the scraper 121, in one embodiment, the top of the scraper 121 is close to the top of the tank body 11, and the bottom of the scraper 121 is close to the bottom of the tank body 11, so that when the scraper 121 rotates, it is convenient to scrape off all the slurry attached to the inner wall of the ball mill.
[0042] See also Figure 4In one embodiment, the bracket includes an upper bracket 123 and a lower bracket 124, the upper bracket 123 is arranged above the lower bracket 124, the axis of the connecting shaft 122 is colinear with the axis of the tank body 11 and the connecting shaft 122 passes through the upper bracket 123 and the lower bracket 124 in sequence, and the upper and lower ends of the scraper 121 are respectively connected to the upper bracket 123 and the lower bracket 124. The bracket provided in this embodiment has a simple structure while meeting the requirement of supporting the scraper 121. When the connecting shaft 122 is driven by an external driving device to rotate, it can drive the upper bracket 123 and the lower bracket 124 to rotate, and then drive the scraper 121 connected to the upper bracket 123 and the lower bracket 124 to rotate around the axis of the connecting shaft 122.
[0043] Regarding the shapes of the upper bracket 123 and the lower bracket 124, in one embodiment, the upper bracket 123 and the lower bracket 124 are both rod-shaped, there are two scrapers 121, the two ends of the upper bracket 123 are respectively connected to the tops of the two scrapers 121, and the two ends of the lower bracket 124 are respectively connected to the bottoms of the two scrapers 121. Figure 4 , schematically showing two scrapers 121 connected to an upper bracket 123 and a lower bracket 124. The upper bracket 123 and the lower bracket 124 are arranged in a rod shape, so that the volume occupied by the upper bracket 123 and the lower bracket 124 in the tank body 11 can be minimized while meeting the requirements of supporting the scrapers, and the rod-shaped upper bracket 123 and the lower bracket 124 can also save materials.
[0044] The shapes of the upper bracket 123 and the lower bracket 124 are not limited to the following. Figure 4 The rod-shaped structure shown may be a disc-shaped structure, or the upper bracket 123 and the lower bracket 124 may be arranged in a cross shape or a cross shape, etc. At this time, according to the special shapes of the upper bracket 123 and the lower bracket 124, a reasonable number of scrapers 121 are arranged between the two.
[0045] In one embodiment, see Figure 4 and Figure 5 , the upper bracket 123 and the lower bracket 124 are arranged vertically; see Figure 6 The scraper 121 is in the shape of a long strip, and includes an upper arc section 1212, an intermediate connecting section 1213 and a lower arc section 1214. The upper arc section 1212, the intermediate connecting section 1213 and the lower arc section 1214 are connected in sequence, the concave side of the upper arc section 1212 faces upward, and the concave side of the lower arc section 1214 faces downward, and the intermediate connecting section 1213 connects the upper arc section 1212 and the lower arc section 1214. This embodiment provides a scraper 121 of a specific shape, and the protection scope of this application is not limited to only Figure 6 The shape of the scraper 121 shown, and other scrapers 121 with a spiral structure are all within the protection scope of the present application.
[0046] In one embodiment, see Figure 3 , the bottom surface of the lower bracket 124 contacts the inner bottom surface of the tank body 11, and the circumferential side surface of the lower bracket 124 contacts the inner side wall of the tank body 11; the top surface of the upper bracket 123 contacts the inner top surface of the tank body 11, and the circumferential side surface of the upper bracket 123 contacts the inner side wall of the tank body 11. When the upper bracket 123 and the lower bracket 124 are both rod-shaped, the two ends of the lower bracket 124 contact the inner side wall of the tank body 11, and the two ends of the upper bracket 123 contact the inner side wall of the tank body 11. When the upper bracket 123 and the lower bracket 124 rotate, the upper bracket 123 and the lower bracket 124 can also scrape off some slurry attached to the inner wall of the ball mill 1.
[0047] The bottom surface of the lower bracket 124 is arranged to contact the inner bottom surface of the tank body 11, and the top surface of the upper bracket 123 is arranged to contact the inner top surface of the tank body 11, so that the top of the scraper 121 is close to the top of the tank body 11, and the bottom of the scraper 121 is close to the bottom of the tank body 11, so that when the scraper 121 rotates, it is convenient to scrape off all the slurry attached to the inner wall of the ball mill 1.
[0048] In one embodiment, the scraper 121 is detachably connected to the upper bracket 123 and the lower bracket 124 , respectively, so that the scraper 121 can be replaced when it is worn.
[0049] Regarding the detachable connection between the scraper 121 and the upper bracket 123 and the lower bracket 124, in one embodiment, see Figure 6 , plugs 1211 are provided at both upper and lower ends of the scraper 121, and the plugs 1211 at both ends of the scraper 121 are respectively inserted into the sockets on the upper bracket 123 and the sockets on the lower bracket 124, the plug 1211 at the top of the scraper 121 has a smaller diameter than the socket on the upper bracket 123, and the plug 1211 at the bottom of the scraper 121 has a smaller diameter than the socket on the lower bracket 124. At this time, the lower bracket 124 is supported on the inner bottom surface of the tank body 11, and the upper bracket 123 is supported in the tank body 11 through the scraper 121.
[0050] Regarding the detachable connection between the scraper 121 and the upper bracket 123 and the lower bracket 124, in one embodiment, the scraper 121 is fixedly connected to the upper bracket 123 and the lower bracket 124 by screws or bolts. For example, threaded holes are provided on the upper bracket 123, the lower bracket 124 and the scraper 121, and screws or bolts are inserted into the threaded holes at the top of the upper bracket 123 and the scraper 121 to realize the detachable connection between the upper bracket 123 and the scraper 121, and screws or bolts are inserted into the threaded holes at the bottom of the lower bracket 124 and the scraper 121 to realize the detachable connection between the lower bracket 124 and the scraper 121.
[0051] Regarding the detachable connection between the scraper 121 and the upper bracket 123 and the lower bracket 124, in one embodiment, one end of the scraper 121 is detachably connected to the upper bracket 123 / lower bracket 124 through a plug, and the other end of the scraper 121 is detachably connected to the lower bracket 124 / upper bracket 123 through screws or bolts.
[0052] In one embodiment, at least one of the upper bracket 123 and the lower bracket 124 is detachably connected to the connecting shaft 122. The upper bracket 123 and the lower bracket 124 are fixed on the connecting shaft 122 so that the upper bracket 123 and the lower bracket 124 are driven to rotate when the connecting shaft 122 rotates. By setting at least one of the upper bracket 123 and the lower bracket 124 to be detachably connected to the connecting shaft 122, it is convenient to replace the scraper 121. For example, the upper bracket 123 is detachably connected to the connecting shaft 122. When replacing the scraper 121 of the wall scraper 12, first remove the upper bracket 123 from the top of the scraper 121 and the connecting shaft 122, then remove the bottom of the scraper 121 from the lower bracket 124, replace the new scraper 121, connect the bottom of the new scraper 121 to the lower bracket 124, then pass the upper bracket 123 through the connecting shaft 122, and connect the upper bracket 123 to the connecting shaft 122 and the top of the scraper 121.
[0053] The upper bracket 123 and the lower bracket 124 are both detachably connected to the connecting shaft 122. In one embodiment, the upper bracket 123 and the lower bracket 124 are both provided with a middle hole, and the connecting shaft 122 is inserted into the middle hole of the upper bracket 123 and the lower bracket 124. The upper bracket 123 and the lower bracket 124 are both detachably connected to the connecting shaft 122 by screws or bolts. The connecting shaft 122 is connected to the upper bracket 123 and the lower bracket 124 by screws or bolts, and the connection method is simple and easy to disassemble and assemble.
[0054] See also Figure 4 , schematically showing that the connecting shaft 122 passes through the upper bracket 123 and the lower bracket 124, a first bolt 126 is provided on the upper bracket 123, the first bolt 126 transversely passes through the upper bracket 123 and is connected to the connecting shaft 122, and a second bolt 127 is provided on the lower bracket 124, the second bolt 127 transversely passes through the lower bracket 124 and is connected to the connecting shaft 122.
[0055] In one embodiment, the tank body 11 and the wall scraper 12 are detachably connected, so that the wall scraper 12 can be removed from the tank body 11 to replace the scraper 121 .
[0056] The tank body 11 is detachably connected to the scraper 12. In one embodiment, the tank body 11 includes a cylinder 112, a tank cover 111 and a bottom plate 113. The tank cover 111 and the bottom plate 113 are respectively arranged at the upper and lower ends of the cylinder 112. At least one of the tank cover 111 and the bottom plate 113 is detachably connected to the cylinder 112, and the two ends of the connecting shaft 122 pass through the tank cover 111 and the bottom plate 113 respectively.
[0057] The two ends of the connecting shaft 122 pass through the through holes on the tank cover 111 and the bottom plate 113 respectively, and the diameter of the connecting shaft 122 is smaller than the through holes on the tank cover 111 and the bottom plate 113. Therefore, when one of the tank cover 111 and the bottom plate 113 is detachably connected to the cylinder 112, the detachable connection between the tank body 11 and the wall scraper 12 can be achieved.
[0058] For example, the tank cover 111 can be detachably connected to the barrel 112. When the scraper 121 needs to be replaced, the tank cover 111 can be removed from the barrel 112 first, and then the wall scraper 12 can be taken out from the tank 11 to replace the new scraper 121. Preferably, the tank cover 111 and the bottom plate 113 are both detachably connected to the barrel 112.
[0059] The connection structure between the tank cover 111 and the cylinder 112 can be as follows: the tank cover 111 is in the shape of a flat plate and supported on the top of the cylinder 112, and the tank cover 111 and the cylinder 112 are detachably connected by screws or bolts. Alternatively, the tank cover 111 includes a first tank cover portion and a second tank cover portion, the second tank cover portion is arranged on the lower side of the first tank cover portion and the two are arranged coaxially, the diameter of the second tank cover portion is smaller than the diameter of the first tank cover portion, the second tank cover portion is inserted into the cylinder 112 and the diameter of the second tank cover portion is not larger than the inner diameter of the cylinder 112, and a connecting nut 125 is arranged on the connecting shaft 122, and the tank cover 111 is squeezed onto the cylinder 112 by rotating the connecting nut 125 to achieve a detachable connection between the tank cover 111 and the cylinder 112.
[0060] The connection structure between the bottom plate 113 and the cylinder 112 can be as follows: the bottom plate 113 is flat and is arranged at the bottom of the cylinder 112, and the bottom plate 113 and the cylinder 112 are detachably connected by screws or bolts. Alternatively, the bottom plate 113 includes a first bottom plate portion and a second bottom plate portion, the second bottom plate portion is arranged on the upper side of the first bottom plate portion and the two are arranged coaxially, the diameter of the second bottom plate portion is smaller than the diameter of the first bottom plate portion, the second bottom plate portion is inserted into the cylinder 112, the second bottom plate portion and the cylinder 112 are tightly matched, or the diameter of the second bottom plate portion is not larger than the inner diameter of the cylinder 112 and the first bottom plate portion and the cylinder 112 are connected by screws or bolts.
[0061] A ball mill includes a driving device and the above-mentioned ball mill 1, wherein the driving device is connected to a connecting shaft 122 in the ball mill 1. The driving device is preferably a driving motor, and when the driving device is started, it can drive a scraper 121 in the ball mill 1 to rotate through the connecting shaft 122, so that the scraper 121 can scrape the inner wall of the tank body 11 when rotating, so as to facilitate sufficient grinding of the slurry. The ball mill 1 has been described in detail above, and no further elaboration is made here.
[0062] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.
Claims
1. A ball mill, characterized in that: It comprises a tank body and a wall scraper arranged in the tank body; The wall scraper includes a scraper, a bracket and a connecting shaft for connecting to an external driving device. The scraper is arranged on the bracket. The scraper has a spiral structure and the outer edge of the scraper extending along the length direction contacts the inner wall of the tank body. One end of the connecting shaft extends out of the tank body.
2. The ball mill according to claim 1, characterized in that: There is one scraper; or, there are more than two scrapers, and each of the scrapers is arranged on the bracket at intervals along the circumferential direction.
3. The ball mill according to claim 1, characterized in that: The bracket includes an upper bracket and a lower bracket, the upper bracket is arranged above the lower bracket, the axis of the connecting shaft is colinear with the axis of the tank body and the connecting shaft passes through the upper bracket and the lower bracket in sequence, and the upper and lower ends of the scraper are respectively connected to the upper bracket and the lower bracket.
4. The ball mill according to claim 3, characterized in that: The upper bracket and the lower bracket are both rod-shaped, and there are two scrapers. The two ends of the upper bracket are respectively connected to the tops of the two scrapers, and the two ends of the lower bracket are respectively connected to the bottoms of the two scrapers.
5. The ball mill according to claim 4, characterized in that: The upper bracket and the lower bracket are arranged vertically; the scraper is in the shape of a long strip, and the scraper includes an upper arc section, a middle connecting section and a lower arc section, the upper arc section, the middle connecting section and the lower arc section are connected in sequence, the concave side of the upper arc section faces upward, and the concave side of the lower arc section faces downward.
6. The ball mill according to claim 3, characterized in that: The bottom surface of the lower bracket contacts the inner bottom surface of the tank body, and the circumferential side surface of the lower bracket contacts the inner side wall of the tank body; the top surface of the upper bracket contacts the inner top surface of the tank body, and the circumferential side surface of the upper bracket contacts the inner side wall of the tank body.
7. The ball mill according to claim 3, characterized in that: The scraper is detachably connected to the upper bracket and the lower bracket respectively; Plugs are provided at both upper and lower ends of the scraper, and the plugs at both ends of the scraper are respectively inserted into the sockets on the upper bracket and the sockets on the lower bracket; or, the scraper is fixedly connected to the upper bracket and the lower bracket by screws or bolts.
8. The ball mill according to claim 3, characterized in that: The upper bracket and the lower bracket are both provided with a middle hole, the connecting shaft is inserted into the middle holes of the upper bracket and the lower bracket, and at least one of the upper bracket and the lower bracket is detachably connected to the connecting shaft.
9. The ball mill according to claim 1, characterized in that: The tank body is detachably connected to the wall scraper; The tank body comprises a cylinder, a tank cover and a bottom plate, wherein the tank cover and the bottom plate are respectively arranged at the upper and lower ends of the cylinder, at least one of the tank cover and the bottom plate is detachably connected to the cylinder, and the two ends of the connecting shaft pass through the tank cover and the bottom plate respectively.
10. A ball mill, characterized in that: It comprises a driving device and a ball mill according to any one of claims 1 to 9, wherein the driving device is connected to a connecting shaft in the ball mill.