Ball mill and grinding system

Abstract

The utility model provides a ball mill and a grinding system, and relates to the technical field of grinding equipment, and the ball mill comprises a bracket, a barrel body and a transmission mechanism, the barrel is installed on the support and rotationally connected with the support, an opening is formed in a barrel body of a hollow structure, the end cover assembly comprises a cover body, a connecting pipe and a flange piece of a bent structure, the end, away from the cover body, of the connecting pipe is detachably connected with the flange piece, and a plurality of discharging holes are formed in the feeding end of the flange piece; the transmission mechanism is connected with the barrel and can drive the barrel to rotate. In the rotating process of the barrel body, ballstones in the barrel body crush and grind materials, the end cover assembly is installed at the opening position of the barrel body, the discharging hole of the flange piece can play a role in buffering and blocking the ballstones in the barrel body, powder obtained after grinding can be conveniently discharged through the discharging hole of the flange piece, and the grinding efficiency is improved. And the discharging quality of the ball mill is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of grinding and separation equipment, and more specifically, to a ball mill and a grinding system. Background Art

[0002] The ball mill is used to crush materials. A certain number of steel balls are loaded into the cylinder body of the ball mill as grinding media, which is suitable for grinding various ores and other materials. During operation, the outlet position of a common ball mill is prone to wear due to the repeated impact of steel balls, and it is easy to be damaged. Materials with unqualified grinding size are discharged through the outlet, affecting the discharge quality of the ball mill. Summary of the Utility Model

[0003] The purpose of the utility model is to provide a ball mill and a grinding system. The discharge holes of the flange member play a blocking role on the ball stones in the cylinder body, and the materials are discharged through the discharge holes of the flange member, improving the discharge quality of the ball mill.

[0004] A first aspect of the utility model provides a ball mill, which includes a bracket, a cylinder body and a transmission mechanism.

[0005] Bracket;

[0006] Cylinder body, the cylinder body is installed on the bracket and is rotatably connected to the bracket. The cylinder body includes a cylinder body main body and an end cover assembly. The hollow cylinder body main body is provided with an opening. The end cover assembly includes a cover body, a connecting pipe and a flange member with a bent structure. The cover body is connected to the cylinder body and closes the opening. One end of the cover body facing away from the cylinder body is connected to one end of the connecting pipe. The end of the connecting pipe away from the cover body is detachably connected to the flange member. The feeding end of the flange member is provided with a plurality of discharge holes, and the feeding end penetrates through the connecting pipe and extends into the cylinder body;

[0007] Transmission mechanism, the transmission mechanism is connected to the cylinder body, and the transmission mechanism can drive the cylinder body to rotate.

[0008] In a possible embodiment of the utility model, the inner diameter of the cover body gradually decreases in the direction towards the connecting pipe.

[0009] In a possible embodiment of the utility model, the cover body includes a first cover body, a second cover body and a third cover body. One side of the first cover body is connected to the cylinder body. The second cover body is arranged on the side of the first cover body facing away from the cylinder body and the third cover body. One side of the third cover body facing away from the second cover body is connected to the connecting pipe.

[0010] In a possible embodiment of the utility model, the first cover body, the second cover body and the third cover body together form a stepped structure.

[0011] In a possible embodiment of the present utility model, the area of the cover body is S1, and the projected area of the connection position between the connecting pipe and the cover body is S2, satisfying 0.3S1 ≤ S2 ≤ 0.6S1.

[0012] In a possible embodiment of the present utility model, the flange member is provided with a bent portion, and the angle formed by the bent portion is θ, satisfying 70° ≤ θ ≤ 110°.

[0013] In a possible embodiment of the present utility model, the transmission mechanism includes a transmission motor, a speed reducer, and a transmission belt, and the transmission motor is connected to the speed reducer through the transmission belt.

[0014] In a possible embodiment of the present utility model, the ball mill further includes a lining plate member, and the lining plate member is laid on the inner wall of the cylinder body and the cover body.

[0015] In a possible embodiment of the present utility model, the lining plate member is a rubber lining plate or a silica lining plate.

[0016] The second aspect of the present utility model provides a grinding system, including the ball mill described in any one of the above embodiments.

[0017] Compared with the prior art, the beneficial effects of the present utility model are as follows: A ball mill and a grinding system provided by the present utility model can rotate the cylinder body under the drive of the transmission mechanism, so that the ball stones in the cylinder body can crush and grind the materials during the rotation of the cylinder body. The end cover assembly is installed at the opening position of the cylinder body. When the ball mill discharges materials, the flange member can be detachably installed on the connecting pipe, and the discharge hole of the flange member extends into the cylinder body, so that the discharge hole of the flange member can play a buffering and blocking role for the ball stones in the cylinder body, reducing the impact on the flange member by the end cover assembly, prolonging the product life of the end cover assembly, and facilitating the discharged powder that meets the specified size after grinding to be discharged through the discharge hole of the flange member, thereby improving the discharge quality of the ball mill. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following will briefly introduce the drawings required to be used in the embodiments. It should be understood that the following drawings only show some embodiments of the present utility model, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can be obtained based on these drawings without creative efforts.

[0019] Figure 1 Structural schematic diagram of the ball mill provided in some embodiments of the present utility model;

[0020] Figure 2 Structural schematic of the end cover assembly of the ball mill provided in some embodiments of the present utility model Figure 1 ;

[0021] Figure 3 Structural schematic of the end cover assembly of the ball mill provided in some embodiments of the present utility model Figure 2 ;

[0022] Figure 4 Partial structural schematic diagram of the cylinder body of the ball mill provided in some embodiments of the present utility model.

[0023] Description of main component symbols;

[0024] 100 - Ball mill; 110 - Support; 111 - Rotating shaft; 120 - Cylinder; 121 - Cylinder body; 122 - End cover assembly; 1221 - Cover body; 1221a - First cover body; 1221b - Second cover body; 1221c - Third cover body; 1222 - Connecting pipe; 1223 - Flange; 1223a - Discharge hole; 1223b - Connecting part; 130 - Liner. Detailed implementation manners

[0025] To make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Apparently, the described embodiments are some but not all of the embodiments of the present utility model. The components of the embodiments of the present utility model described and illustrated herein usually can be arranged and designed in various different configurations.

[0026] Therefore, the following detailed description of the embodiments of the present utility model provided in the accompanying drawings is not intended to limit the scope of the claimed present utility model, but merely represents selected embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts fall within the scope of protection of the present utility model.

[0027] It should be noted that: Similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0028] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the utility model product is usually placed during use. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying 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 construed as a limitation to the present utility model. In addition, terms such as "first", "second", "third", etc. are only used for distinguishing descriptions and cannot be understood as indicating or implying relative importance.

[0029] In addition, terms such as "horizontal", "vertical", "suspended", etc. do not mean that the components are required to be absolutely horizontal or suspended, but can be slightly inclined. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0030] In the description of the present utility model, it should also be noted that unless otherwise clearly specified and defined, the terms "set", "installed", "connected", "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0031] The following will, with reference to the drawings, elaborate on some embodiments of the present utility model. Without conflict, the following embodiments and the features in the embodiments can be combined with each other.

[0032] Embodiment 1

[0033] Reference Figure 1 As shown, an embodiment of the present application provides a ball mill 100, which includes a bracket 110, a cylinder 120, and a transmission mechanism.

[0034] Specifically, in combination with Figure 2 and Figure 3As shown, the cylinder body 120 is installed on the bracket 110, and the cylinder body 120 is rotatably connected to the bracket 110. The cylinder body 120 includes a cylinder body main body 121 and an end cover assembly 122. The cylinder body main body 121 with a hollow structure is provided with an opening. The end cover assembly 122 includes a cover body 1221, a connecting pipe 1222 with a bent structure, and a flange member 1223. The cover body 1221 is connected to the cylinder body 120 and closes the opening. One end of the cover body 1221 facing away from the cylinder body 120 is connected to one end of the connecting pipe 1222. The end of the connecting pipe 1222 away from the cover body 1221 is detachably connected to the flange member 1223. The flange member 1223 is provided with a plurality of discharge holes 1223a. The transmission mechanism is connected to the cylinder body 120, and the transmission mechanism can drive the cylinder body 120 to rotate. The cylinder body 120 can rotate under the drive of the transmission mechanism, so that the ball stones in the cylinder body 120 can crush and grind the material during the rotation of the cylinder body 120. The end cover assembly 122 is installed at the opening position of the cylinder body main body 121. When the ball mill 100 discharges materials, the flange member 1223 can be detachably installed on the connecting pipe 1222. The discharge holes 1223a of the flange member 1223 extend into the cylinder body main body 121, so that the discharge holes 1223a of the flange member 1223 can block and buffer the ball stones in the cylinder body 120, reduce the impact and shock on the end cover assembly 122 caused by the ball stones, extend the product life of the flange member 1223, and facilitate the discharged powder to pass through the discharge holes 1223a of the flange member 1223.

[0035] It can be understood that the main structure of the ball mill 100 usually includes a cylinder body 120. Grinding ball stones (such as steel balls, ceramic balls or gravels) are installed in the cylinder body 120. When working, the cylinder body 120 rotates to generate centrifugal force, so that the grinding medium rises to a certain height and then falls, impacting and grinding the material in the cylinder body 120, thereby realizing the fine crushing of the material. The discharge holes 1223a of the flange member 1223 control the discharge particle size. At the same time, the flange member 1223 takes appropriate sealing measures to prevent the powder from leaking. When the ball mill 100 discharges materials, the flange member 1223 can be detachably installed on the connecting pipe 1222. The discharge holes 1223a of the flange member 1223 extend into the cylinder body main body 121. When the cylinder body 120 is working, the flange member 1223 can be detached from the connecting pipe 1222 and the pipe orifice position of the connecting pipe 1222 can be closed. After the crushing and grinding work of the cylinder body 120 is completed, the flange member 1223 is installed on the connecting pipe 1222, and the powder meeting the size can be discharged through the discharge holes 1223a of the flange member 1223.

[0036] It should be noted that refer to Figure 1As shown, the ball mill 100 has a first direction. Exemplarily, the first direction is taken as the length direction of the ball mill 100. It is understood that the above definition is only for the convenience of understanding the relative position relationship of each part in the ball mill 100, and should not be understood as a limitation of the present application.

[0037] In one embodiment, optionally, Figure 2 As shown, the inner diameter of the cover body 1221 gradually decreases toward the connecting tube 1222, that is, close to the connecting tube 1222, the inner diameter of the cover body 1221 gradually decreases, and the inner diameter of the cover body 1221 is the smallest at the connecting position of the cover body 1221 and the connecting tube 1222. At this time, the inner diameter of the flange 1223 matches the size of the connecting tube 1222, so that the feeding end of the flange 1223 is connected to the connecting tube 1222, and the ground powder can be discharged after passing through the flange 1223 and the connecting tube 1222, reducing the impact on the connecting tube 1222.

[0038] Optionally, combined Figure 2 and Figure 3 As shown, the cover body 1221 includes a first cover body 1221a, a second cover body 1221b and a third cover body 1221c, one side of the first cover body 1221a is connected to the cylinder 120, the second cover body 1221b is arranged on the side of the first cover body 1221a away from the cylinder 120 and the third cover body 1221c, and the side of the third cover body 1221c away from the second cover body 1221b is connected to the connecting pipe 1222, accordingly, the second cover body 1221b is located between the first cover body 1221a and the third cover body 1221c to prevent damage due to vibration or impact during the long-term operation of the ball mill 100.

[0039] In one embodiment, optionally, the ball mill 100 further includes a lining member 130, which is laid on the inner wall of the cylinder body 121 and the cover body 1221. The lining member 130 serves to protect the inner wall of the cylinder body 121 and the cover body 1221, and different types of lining members 130 are selected according to demand to improve grinding efficiency.

[0040] In summary, the cylinder body 120 of the ball mill 100 can rotate driven by the transmission mechanism, so that the ball stones in the cylinder body 120 can crush and grind the materials during the rotation of the cylinder body 120. The end cover assembly 122 is installed at the opening position of the cylinder body main body 121. The connecting pipe 1222 with a bent structure can buffer the ball stones in the cylinder body 120, reduce the impact and shock on the flange member 1223 by the ball stones, extend the product life of the flange member 1223, and facilitate the discharged powder to be discharged through the discharge hole 1223a of the flange member 1223, thereby improving the discharge quality of the ball mill 100.

[0041] Embodiment 2

[0042] Reference Figures 1 to 3 As shown, the embodiment of the present application provides another ball mill 100, which includes a bracket 110, a cylinder body 120 and a transmission mechanism.

[0043] Specifically, as shown in combination with Figure 2 and Figure 3 The cylinder body 120 is installed on the bracket 110 and is rotatably connected to the bracket 110. The cylinder body 120 includes a cylinder body main body 121 and an end cover assembly 122. The hollow cylinder body main body 121 is provided with an opening. The cylinder body 120 can rotate driven by the transmission mechanism, so that the ball stones in the cylinder body 120 can crush and grind the materials during the rotation of the cylinder body 120.

[0044] In this embodiment, the end cover assembly 122 includes a cover body 1221, a connecting pipe 1222 with a bent structure and a flange member 1223. The cover body 1221 is connected to the cylinder body 120 and closes the opening. One end of the cover body 1221 facing away from the cylinder body 120 is connected to one end of the connecting pipe 1222. The end of the connecting pipe 1222 away from the cover body 1221 is detachably connected to the flange member 1223. The flange member 1223 is provided with a plurality of discharge holes 1223a. When the ball mill 100 discharges materials, the flange member 1223 can be detachably installed on the connecting pipe 1222, and the discharge holes 1223a of the flange member 1223 extend into the cylinder body main body 121. When the cylinder body 120 is working, the flange member 1223 can be detached from the connecting pipe 1222 and the pipe orifice position of the connecting pipe 1222 can be closed; when the crushing and grinding work of the cylinder body 120 is completed, the flange member 1223 is installed on the connecting pipe 1222, and the qualified powder is discharged through the discharge holes 1223a of the flange member 1223.

[0045] The transmission mechanism is connected to the cylinder body 120, and the transmission mechanism can drive the cylinder body 120 to rotate. The end cover assembly 122 is installed at the opening position of the cylinder body 121. When the ball mill 100 discharges materials, the flange member 1223 can be detachably installed on the connecting pipe 1222. The discharge hole 1223a of the flange member 1223 extends into the cylinder body 121, so that the discharge hole 1223a of the flange member 1223 can buffer and block the ball stones in the cylinder 120, reduce the impact and shock on the end cover assembly 122 caused by the ball stones, extend the product life of the end cover assembly 122, and facilitate the discharged powder to pass through the discharge hole 1223a of the flange member 1223.

[0046] Exemplarily, the flange member 1223 is provided with a connecting portion 1223b. The flange member 1223 can be communicated with the connecting pipe 1222 through the connecting portion 1223b, so that the powder can be discharged through the discharge hole 1223a of the flange member 1223. It should be noted that, with reference to Figure 1 shown, the ball mill 100 has a first direction. Exemplarily, the first direction takes the length direction of the ball mill 100 as an example.

[0047] In one embodiment, optionally, as Figure 2 shown, the inner diameter of the cover body 1221 gradually decreases in the direction towards the connecting pipe 1222, that is, at the position close to the connecting pipe 1222, the inner diameter of the cover body 1221 gradually decreases, and the inner diameter dimension of the cover body 1221 is the smallest at the connection position between the cover body 1221 and the connecting pipe 1222, which is convenient for the connecting pipe 1222 to be communicated with the feed end of the flange member 1223, and the ground powder can be discharged through the connecting pipe 1222 and the discharge port of the flange member 1223. Exemplarily, at least a part of the flange member 1223 is disposed within the connecting pipe 1222.

[0048] Optionally, in combination with Figure 2 and Figure 3 shown, the cover body 1221 includes a first cover body 1221a, a second cover body 1221b and a third cover body 1221c. One side of the first cover body 1221a is connected to the cylinder body 120. The second cover body 1221b is disposed on the side of the first cover body 1221a away from the cylinder body 120 and the third cover body 1221c. The side of the third cover body 1221c away from the second cover body 1221b is connected to the connecting pipe 1222. Correspondingly, the second cover body 1221b is located between the first cover body 1221a and the third cover body 1221c, preventing damage due to vibration or impact during the long-term operation of the ball mill 100.

[0049] Furthermore, the first cover body 1221a, the second cover body 1221b, and the third cover body 1221c together form a stepped structure. The cover body 1221 of the stepped structure has the function of gradually buffering and reducing the inner diameter size, reducing the impact on the cover body 1221 caused by the grinding balls during the normal operation of the ball mill 100, avoiding the situation of damage to the position of the cover body 1221, and prolonging the service life of the cylinder body 120 of the ball mill 100. Exemplarily, the first cover body 1221a, the second cover body 1221b, and the third cover body 1221c are all circular structures.

[0050] Exemplarily, an electric tension nut is used for installation between the cover body 1221 and the cylinder body 120.

[0051] In one embodiment, optionally, the area of the cover body 1221 is S1, and the projected area of the connection position of the connecting pipe 1222 and the cover body 1221 is S2, satisfying 0.3S1 ≤ S2 ≤ 0.6S1, that is, the projected area ratio of the connection position of the connecting pipe 1222 and the cover body 1221 enables the connecting pipe 1222 to connect to the flange member 1223, and reduces the impact of the balls in the cylinder body 120 on the position of the connecting pipe 1222, prolonging the service life of the connecting pipe 1222. Exemplarily, S2 is 3.00 m 2 , and S1 is 1.80 m 2 , at this time, the connecting pipe 1222 is connected to the flange member 1223, ensuring that the connection position of the connecting pipe 1222 and the flange member 1223 has a relatively large size specification, so as to facilitate the discharge of the powder material through the discharge hole 1223a of the flange member 1223 and the connecting pipe 1222, avoiding the situation where the discharged material cannot be discharged in time. In addition, S1 can also be 0.90 m 2 , in this way, the size diameter of the connecting pipe 1222 is shortened, reducing the situation where the balls enter the connecting pipe 1222 from the cylinder body 120 during the crushing operation of the ball mill 100, causing impact on the connecting pipe 1222 and reducing the damage to the position of the connecting pipe 1222. Of course, the sizes of S1 and S2 are not limited to this. In other embodiments, when S2 is 3.50 m 2 , S1 can also be 2.10 m 2 ; when S2 is 2.50 m 2 , S1 can also be 0.75 m 2 , 0.90 m 2 , 1.00 m 2 , 1.25 m 2 , 1.45 m 2 , 1.50 m 2 etc., and will not be listed one by one here.

[0052] Exemplarily, the flange member 1223 is provided with a bent portion, and the angle formed by the bent portion is θ, satisfying 70° ≤ θ ≤ 110°. That is, the angle θ of the bent portion of the flange member 1223 is conducive to the powder in the cylinder 120 to discharge through the discharge port of the flange member 1223. When the angle θ of the bent portion is 70°, it avoids the powder being stuck at the position of the bent portion. When the angle θ of the bent portion is 110°, it can also ensure the discharge efficiency of the powder. The angle θ of the bent portion is any value between 70° and 110°, and θ can be 70°, 85°, 96°, 105°, 110°.

[0053] In one embodiment, optionally, as Figure 4 shown, the transmission mechanism includes a transmission motor, a reducer, and a transmission belt. The transmission motor is connected to the reducer, and the reducer is connected to the cylinder 120 through the transmission belt. In other words, the power and speed of the transmission motor are matched with the working load and the reducer of the ball mill 100 according to requirements. The reducer is used to convert the high-speed rotation of the transmission motor into a low-speed rotation suitable for the operation of the cylinder 120 of the ball mill 100, and at the same time increase the torque. The transmission belt is used to drive the cylinder 120 to rotate, and the grinding balls in the cylinder 120 move to grind the materials. Further, the transmission mechanism further includes a rotating shaft 111, and the cylinder 120 is rotatably connected to the bracket 110 through the rotating shaft 111 to drive the cylinder 120 to rotate relatively.

[0054] In one embodiment, optionally, the ball mill 100 further includes a lining plate member 130, and the lining plate member 130 is laid on the inner wall of the cylinder body 121 and the cover body 1221. The lining plate member 130 serves to protect the inner wall of the cylinder body 121 and the cover body 1221, and different types of lining plate members 130 are selected according to requirements to improve the grinding efficiency. Further, the lining plate member 130 is a rubber lining plate or a silica lining plate. The rubber lining plate has good elasticity, can absorb shock, reduce noise, and has good wear resistance; the silica lining plate has extremely high hardness and wear resistance, can effectively resist strong wear and impact, and has good high-temperature resistance and corrosion resistance. Both the rubber lining plate and the silica lining plate have better technical effects.

[0055] Embodiment 3

[0056] The embodiment of the present invention further provides a grinding system, including the ball mill 100 in Embodiment 1 or Embodiment 2. The grinding system including the ball mill 100 has all the beneficial effects of the ball mill 100, which will not be described in detail here.

[0057] In all the examples shown and described here, any specific value should be construed as merely exemplary, not as a limitation. Therefore, other examples of the exemplary embodiments may have different values.

[0058] The above-described embodiments merely represent several implementation manners of the present utility model. The description thereof is relatively specific and detailed, but it should not be construed as a limitation on the scope of the present utility model. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present utility model, several modifications and improvements can still be made, and these all fall within the protection scope of the present utility model.

Claims

1. A ball mill, characterized in that: include: Bracket; A cylinder, the cylinder is mounted on the bracket, and the cylinder is rotatably connected to the bracket, the cylinder comprises a cylinder body and an end cover assembly, the cylinder body of the hollow structure is provided with an opening, the end cover assembly comprises a cover body, a connecting pipe and a flange of a bent structure, the cover body is connected to the cylinder and closes the opening, the end of the cover body away from the cylinder is connected to one end of the connecting pipe, the end of the connecting pipe away from the cover body is detachably connected to the flange, a plurality of discharge holes are provided at the feed end of the flange, the feed end is penetrated through the connecting pipe and extends into the cylinder; A transmission mechanism is connected to the cylinder and can drive the cylinder to rotate.

2. The ball mill according to claim 1, characterized in that: The inner diameter of the cover body gradually decreases toward the connecting pipe.

3. The ball mill according to claim 2, characterized in that: The cover body includes a first cover body, a second cover body and a third cover body, one side of the first cover body is connected to the cylinder body, the second cover body is arranged on the side of the first cover body away from the cylinder body and the third cover body, and the side of the third cover body away from the second cover body is connected to the connecting pipe.

4. The ball mill according to claim 3, characterized in that: The first cover body, the second cover body and the third cover body together form a stepped structure.

5. The ball mill according to claim 3, characterized in that: The area of ​​the cover body is S1, and the projected area of ​​the connection position between the connecting pipe and the cover body is S2, which satisfies 0.3S1≤S2≤0.6S1.

6. The ball mill according to claim 1, characterized in that: The flange is provided with a bending portion, and the angle formed by the bending portion is θ, which satisfies 90°≤θ≤110°.

7. The ball mill according to any one of claims 1 to 6, characterized in that: The transmission mechanism comprises a transmission motor, a reducer and a transmission belt. The transmission motor is connected to the reducer, and the reducer is connected to the cylinder through the transmission belt.

8. The ball mill according to any one of claims 1 to 6, characterized in that: It also includes a lining plate member, which is laid on the inner wall of the cylinder body and the cover body.

9. The ball mill according to claim 8, characterized in that The lining plate member is a rubber lining plate or a silicon lining plate.

10. A grinding system, characterized in that: A ball mill comprising the ball mill described in any one of claims 1 to 9.

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