Ball mill

Abstract

The present invention discloses a ball mill, comprising a frame and a grinding bin, wherein the grinding bin is arranged on the frame, a driving control mechanism is arranged on the frame, the driving control mechanism is connected to the middle part of the grinding bin, and a sheathed support mechanism is symmetrically arranged at both ends of the grinding bin, the sheathed support mechanism is connected to the frame, and a layered grinding mechanism is arranged in the grinding bin. The present invention provides a driving control mechanism at the middle end of the outer portion of the grinding bin, and at the same time, sheathed support mechanisms are arranged at both ends of the grinding bin to provide position-limiting support for the grinding bin, and cooperate with the driving control mechanism to control the rotation of the grinding bin, so as to achieve the grinding bin remaining stable under high-speed rotation, effectively improve the ball milling processing efficiency, and provide a layered grinding mechanism in the grinding bin to further improve the service life of the grinding body, extend the maintenance time interval, thereby reducing the use cost of the ball mill, and then reducing the production cost, and the structure is simple and the stability is good.

Description

Technical Field

[0001] The invention relates to the technical field of ball mills, in particular to a ball mill. Background Art

[0002] Ball mill is the key equipment for crushing materials after they are crushed. It is widely used in cement, silicate products, new building materials, refractory materials, fertilizers, black and non-ferrous metal beneficiation, glass and ceramics and other production industries. It can grind various ores and other grindable materials dry or wet. Ball mill is suitable for grinding various ores and other materials. It is widely used in beneficiation, building materials and chemical industries. It can be divided into dry and wet grinding methods. According to different ore discharging methods, it can be divided into grid type and overflow type. Ball mill is composed of horizontal cylinder, inlet and outlet hollow shaft and grinding head. The cylinder is a long cylinder with grinding body inside. The cylinder is made of steel plate and fixed with steel lining. The grinding body is generally steel ball and is loaded into the cylinder according to different diameters and a certain proportion. The grinding body can also be steel segment, which can be selected according to the particle size of the grinding material. The material is loaded into the cylinder from the hollow shaft at the feeding end of the ball mill. When the cylinder of the ball mill rotates, the grinding body is crushed by inertia and centrifugal force. The effect of friction makes it attached to the cylinder lining and carried away by the cylinder. When it is brought to a certain height, it is thrown down due to its own gravity. The falling grinding body crushes the material in the cylinder like a projectile. The material enters the first bin of the mill evenly through the feeding device and the hollow shaft spiral. There are stepped linings or corrugated linings in the bin, which are filled with steel balls of various specifications. The rotation of the cylinder generates centrifugal force to bring the steel balls to a certain height and then fall down, which has a heavy impact and grinding effect on the material. Since the mill itself is relatively long, the rotating shaft is prone to deformation under all the weight, and the ball mill vibrates greatly when working, which can easily cause damage to the device components. Some ball mills use an external drive to control the grinding bin, but their rotation speed is mostly low, which affects the ball milling efficiency. At the same time, the internal structure of the grinding bin in the prior art is relatively simple. During operation, the grinding body wears out quickly and needs to be replaced frequently, resulting in high production costs. In view of this, in-depth research was conducted on the above-mentioned problems, and this case was produced. Summary of the invention

[0003] The purpose of the present invention is to solve the above-mentioned problems. A ball mill is designed to solve the problems in the prior art. Since the mill itself is long, the rotating shaft is prone to deformation due to bearing all the weight, and the ball mill vibrates greatly when working, which can easily cause damage to the device components. Some ball mills use an external drive to control the grinding chamber, but their rotation speed is mostly low, which affects the ball milling efficiency. At the same time, the internal structure of the grinding chamber in the prior art is relatively simple. During operation, the grinding body wears out quickly, and the grinding body needs to be replaced frequently, resulting in high production costs.

[0004] The technical solution of the present invention to achieve the above-mentioned purpose is: a ball mill, comprising a frame and a grinding chamber, wherein the grinding chamber is arranged on the frame, a driving control mechanism is arranged on the frame, the driving control mechanism is connected to the middle part of the grinding chamber, a covering support mechanism is symmetrically arranged at both ends of the grinding chamber, the covering support mechanism is connected to the frame, and a layered grinding mechanism is arranged in the grinding chamber;

[0005] The drive control mechanism comprises: a fixed ring, a gear ring, an auxiliary limit assembly and a drive control structure, wherein the fixed ring is welded to the middle position of the outer wall of the grinding bin, the gear ring is fixedly sleeved on the fixed ring, the auxiliary limit assembly is arranged on the frame, and one end is meshed with the gear ring, and the drive control structure is arranged on one side of the frame, and one end is meshed with the gear ring;

[0006] The enveloping support mechanism comprises: a vertical frame, an annular frame and a rolling support assembly, wherein the vertical frame is arranged on the frame and located at the lower part of the grinding bin, the annular frame is sleeved outside the grinding bin and fixedly connected to the vertical frame, and the rolling support assembly is arranged inside the annular frame and slidably connected to the outer wall of the grinding bin;

[0007] The layered grinding mechanism includes: a support frame, an inner layer bin body, an inner layer grinding assembly and an outer layer grinding assembly, the support frame is arranged in the grinding bin, the inner layer bin body is arranged on the support frame, a certain distance is left between the inner layer bin body and the inner annular surface of the grinding bin, a plurality of discharge holes are evenly opened on the side wall of the inner layer bin body, the inner layer grinding assembly is arranged on the inner annular surface of the inner layer bin body and is staggered with the discharge holes, and the outer layer grinding assembly is arranged on the inner annular surface of the grinding bin.

[0008] The auxiliary limiting assembly includes: a fixed seat, a portal frame and an auxiliary gear, the fixed seat is arranged on the frame, the portal frame is arranged on the fixed seat, and the auxiliary gear is rotatably sleeved on the crossbeam of the portal frame and meshed with the gear ring.

[0009] The drive control structure includes: a drive motor, a reducer and a transmission connection assembly. The drive motor is arranged on a frame and located on one side of the grinding bin. The input end of the reducer is connected to the drive end of the drive motor. One end of the transmission connection assembly is connected to the output end of the reducer, and the other end is meshed with the ring gear.

[0010] The transmission connection assembly includes: a fixed frame, a transmission shaft, a driving gear and a driven gear. The fixed frame is arranged on one side of the output end of the reducer, the transmission shaft is rotatably inserted in the fixed frame, and one end is connected to the output end of the reducer, the driving gear is fixedly sleeved on the transmission shaft, and the driven gear is rotatably arranged in the fixed frame and meshes with the driving gear and the ring gear respectively.

[0011] The fixing frame is provided with an auxiliary oiling assembly, and the auxiliary oiling assembly includes: an oil storage bin, an oiling nozzle, a cylinder, a movable rod and a push plate. The oil storage bin is arranged on one side of the fixing frame, and one end of the oiling nozzle is directly opposite to the side of the driven gear. The oiling nozzle is inserted on one end of the oil storage bin and directly opposite to the driven gear position. The cylinder is arranged on one side of the oil storage bin, one end of the movable rod is connected to the piston end of the cylinder, and the other end extends into the oil storage bin. The push plate is arranged in the oil storage bin and connected to the movable rod. The size of the push plate matches the inner diameter size of the oil storage bin.

[0012] The rolling support assembly includes: an annular groove, a bearing and a sliding ring. The annular groove is arranged on the inner wall surface of the annular frame, the bearing is fixedly arranged in the annular groove, and the sliding ring is fixedly sleeved on the outer wall surface of the grinding bin and has an interference fit with the inner ring of the bearing.

[0013] The inner grinding assembly includes: a bolt connector and an impact column. The bolt connector is arranged on the inner annular surface of the inner layer bin body, and one end extends to the outside of the liner bin body. The impact column is fixedly arranged in the inner layer bin body and fixedly connected to one end of the bolt connector.

[0014] The bolt connection includes: a positioning stud, a fastening nut and a connecting seat. A plurality of assembly threaded holes are opened on the inner warehouse body. The positioning stud is screwed into the threaded hole, and one end extends to the outside of the inner warehouse body. The fastening nut is spirally sleeved on the exposed end of the positioning stud. The connecting seat is welded to the other end of the positioning stud and fits with the inner warehouse body. The connecting seat is fixedly connected to the impact column.

[0015] The outer grinding assembly comprises: corrugated grooves and convex teeth. The corrugated grooves are arranged on the inner annular surface of the grinding bin along an annular array, and the convex teeth are evenly arranged on the side walls of the corrugated grooves.

[0016] The grinding bin and the inner bin body are both wear-resistant alloy steel cylindrical structures.

[0017] The ball mill manufactured by the technical solution of the present invention has a grinding chamber on the frame, a driving control mechanism is arranged at the middle end of the outer portion of the grinding chamber to control the rotation of the grinding chamber, and at the same time, a covering support mechanism is arranged at both ends of the grinding chamber to limit the support of the grinding chamber, and the driving control mechanism is cooperated to control the rotation of the grinding chamber, so that the grinding chamber can remain stable under high-speed rotation, and the ball milling efficiency can be effectively improved. A layered grinding mechanism is arranged in the grinding chamber to further improve the service life of the grinding body and extend the maintenance time interval, thereby reducing the use cost of the ball mill, and then reducing the production cost. The structure is simple and the stability is good, which solves the problem in the prior art that the rotating shaft is easy to deform due to the long mill itself, and the ball mill vibrates greatly when working, which is easy to cause damage to the device components. Some ball mills use an external drive to control the grinding chamber, but the rotation speed is mostly low, which affects the ball milling efficiency. At the same time, the internal structure of the grinding chamber in the prior art is relatively simple, and the grinding body wears quickly during operation, and the grinding body needs to be replaced frequently, resulting in high production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the main structure of a ball mill described in the present invention.

[0019] Figure 2 The figure is a schematic diagram of the side cross-sectional structure at position AA of a ball mill according to the present invention.

[0020] Figure 3 The figure is a schematic diagram of the side cross-sectional structure of the BB position of a ball mill described in the present invention.

[0021] Figure 4 It is a schematic diagram of the partially enlarged structure of the auxiliary oil coating component of the ball mill described in the present invention.

[0022] Figure 5 The figure is a schematic diagram of the cross-sectional structure of an inner grinding assembly of a ball mill according to the present invention.

[0023] In the figure: 1-frame; 2-grinding bin; 3-fixed ring; 4-gear ring; 5-stand; 6-annular frame; 7-support frame; 8-inner bin body; 9-fixed seat; 10-gantry frame; 11-auxiliary gear; 12-drive motor; 13-reducer; 14-fixed frame; 15-transmission shaft; 16-driving gear; 17-driven gear; 18-oil storage bin; 19-oil filling nozzle; 20-cylinder; 21-movable rod; 22-push plate; 23-annular groove; 24-bearing; 25-sliding ring; 26-impact column; 27-positioning stud; 28-fastening nut; 29-connecting seat; 30-corrugated groove; 31-convex tooth. DETAILED DESCRIPTION

[0024] The present invention will be described in detail below in conjunction with the accompanying drawings. Figure 1-5 As shown, by those skilled in the art, all electrical components in this case are connected to their corresponding power supplies through wires, and a suitable controller should be selected according to actual conditions to meet control requirements. The specific connection and control sequence should refer to the following working principle, in which the electrical components are electrically connected in sequence. The detailed connection means are well-known technologies in the art. The following mainly introduces the working principle and process, and does not explain the electrical control.

[0025] Embodiment: By the specification attached Figure 1-5 It can be seen that the present solution includes a frame 1 and a grinding chamber 2, and the positional relationship and connection relationship thereof are as follows: the grinding chamber 2 is arranged on the frame 1, a driving control mechanism is arranged on the frame 1, the driving control mechanism is connected to the middle part of the grinding chamber 2, a covering support mechanism is symmetrically arranged at both ends of the grinding chamber 2, the covering support mechanism is connected to the frame 1, and a layered grinding mechanism is arranged in the grinding chamber 2;

[0026] The above-mentioned drive control mechanism includes: a fixed ring 3, a gear ring 4, an auxiliary limit assembly and a drive control structure. The fixed ring 3 is welded to the middle position of the outer wall of the grinding bin 2, the gear ring 4 is fixedly sleeved on the fixed ring 3, the auxiliary limit assembly is arranged on the frame 1, and one end is meshed with the gear ring 4, and the drive control structure is arranged on one side of the frame 1, and one end is meshed with the gear ring 4; wherein the wrapped support mechanism includes: a vertical frame 5, an annular frame 6 and a rolling support assembly, the vertical frame 5 is arranged on the frame 1 and is located at the lower part of the grinding bin 2, the annular frame 6 is sleeved on the outside of the grinding bin 2 and is fixedly connected to the vertical frame 5, the rolling support assembly is arranged in the annular frame 6 and is slidably connected to the outer wall of the grinding bin 2; the above-mentioned layered grinding mechanism includes: a support frame 7, an inner layer bin body 8, an inner layer grinding assembly and an outer layer grinding assembly, the support frame 7 is arranged in the grinding bin 2, and the inner layer bin body 8 is arranged on the support frame 7 A certain distance is left between the inner bin body and the inner ring surface of the grinding bin 2, a number of discharge holes are evenly opened on the side wall of the inner bin body 8, the inner grinding assembly is arranged on the inner ring surface of the inner bin body 8 and is staggered with the discharge holes, the outer grinding assembly is arranged on the inner ring surface of the grinding bin 2, the grinding bin 2 is arranged on the frame 1, and a driving control mechanism is arranged at the middle end of the outer side of the grinding bin 2 to control the rotation of the grinding bin 2. At the same time, a covering support mechanism is arranged at both ends of the grinding bin 2 to limit the support of the grinding bin 2, and the driving control mechanism is cooperated to control the rotation of the grinding bin 2, so that the grinding bin 2 can remain stable under high-speed rotation, effectively improve the ball milling efficiency, and a layered grinding mechanism is arranged in the grinding bin 2 to further improve the service life of the grinding body and extend the maintenance time interval, thereby reducing the use cost of the ball mill, and then reducing the production cost, with a simple structure and good stability.

[0027] Attached to the instruction manual Figure 1-5It can be known that in the specific implementation process, the auxiliary limit assembly includes: a fixed seat 9, a door frame 10 and an auxiliary gear 11, the fixed seat 9 is arranged on the frame 1, the door frame 10 is arranged on the fixed seat 9, the auxiliary gear 11 is rotatably mounted on the crossbeam of the door frame 10 and meshed with the ring gear 4, wherein the drive control structure includes: a drive motor 12, a reducer 13 and a transmission connection assembly, the drive motor 12 is arranged on the frame 1 and is located on one side of the grinding bin 2, the input end of the reducer 13 is connected to the drive end of the drive motor 12, one end of the transmission connection assembly is connected to the output end of the reducer 13, and the other end is meshed with the ring gear 4, the above-mentioned transmission connection assembly includes: a fixed frame 14, a transmission shaft 15, a driving gear 16 and a driven gear 17, the fixed frame 14 is arranged on one side of the output end of the reducer, the transmission shaft 15 The driving gear 16 is fixedly mounted on the transmission shaft 15, and the driven gear 17 is rotatably arranged in the fixed frame 14, and is respectively meshed with the driving gear 16 and the ring gear 4. When in use, the driving motor 12 is started, and the driving end of the driving motor 12 rotates, which in turn drives the input end of the reducer 13 to rotate, and the input end of the reducer 13 rotates to drive the output end of the reducer 13 to rotate, and the output end of the reducer 13 rotates, and then drives the transmission shaft 15 on the output end of the reducer 13 to rotate, and the transmission shaft 15 rotates to drive the driving gear 16 to rotate, and the driving gear 16 rotates, driving the driven gear 17 meshing with it to rotate, and the driven gear 17 rotates to drive the ring gear 4 meshing with it to rotate, thereby realizing the rotation control of the grinding bin 2.

[0028] Attached to the instruction manual Figure 1 And attached Figure 5It can be known that in the specific implementation process, the above-mentioned fixing frame 14 is provided with an auxiliary oiling assembly, which includes: an oil storage tank 18, an oiling nozzle 19, a cylinder 20, a movable rod 21 and a push plate 22. The oil storage tank 18 is arranged on one side of the fixing frame 14, and one end is directly opposite to the side of the driven gear 17. The oiling nozzle 19 is inserted on one end of the oil storage tank 18 and directly opposite to the position of the driven gear 17. The cylinder 20 is arranged on one side of the oil storage tank 18. One end of the movable rod 21 is connected to the piston end of the cylinder 20, and the other end extends into the oil storage tank 18. The push plate 22 is arranged in the oil storage tank 18 and is connected to the movable rod 21. Then, the size of the push plate 22 matches the inner diameter of the oil storage bin 18. When in use, the block butter is placed in the oil storage bin 18, and the piston end of the cylinder 20 is controlled to expand at a constant speed, thereby pushing the movable rod 21 to move to one side of the oil storage bin 18. During the movement of the movable rod 21, the push plate 22 is pushed to move, thereby pushing the butter in the oil storage bin 18, so that the butter is squeezed out through the oiling nozzle 19 and falls onto the driven gear 17. Under the rotation of the driven gear 17, the butter is driven to the driving gear 16 and the ring gear 4, thereby actively lubricating the transmission position without manual oil replenishment.

[0029] In the specific implementation process, the above-mentioned rolling support assembly includes: an annular groove 23, a bearing 24 and a sliding ring 25. The annular groove 23 is arranged on the inner wall surface of the annular frame 6, and the bearing 24 is fixedly arranged in the annular groove 23. The sliding ring 25 is fixedly sleeved on the outer wall surface of the grinding chamber 2 and has an interference fit with the inner ring of the bearing 24. On the basis of ensuring the smooth rotation of the grinding chamber 2, it can effectively avoid the shaking caused by the high-speed rotation of the grinding chamber 2, thereby protecting the transmission position.

[0030] In the specific implementation process, the above-mentioned inner grinding assembly includes: a bolt connector and an impact column 26, the bolt connector is arranged on the inner ring surface of the inner layer warehouse body 8, and one end extends out of the inner liner warehouse body, the impact column 26 is fixedly arranged in the inner layer warehouse body 8, and is fixedly connected to one end of the bolt connector, wherein the bolt connector includes: a positioning stud 27, a fastening nut 28 and a connecting seat 29, a plurality of assembly threaded holes are opened on the inner layer warehouse body 8, the positioning stud 27 is screwed into the threaded hole, and one end extends out of the inner layer warehouse body 8, the fastening nut 28 is spirally sleeved on the exposed end of the positioning stud 27, the connecting seat 29 is welded to the other end of the positioning stud 27, and fits with the inner layer warehouse body 8, the connecting seat 29 is fixedly connected to the impact column 26, when the impact column 26 needs to be replaced, the inner layer warehouse body 8 can be removed from the support frame 7, the fastening nut on the exposed end of the positioning stud 27 can be removed, and the impact column 26 can be replaced as a whole, thereby improving the efficiency of maintenance operations.

[0031] In the specific implementation process, the above-mentioned outer grinding component includes: corrugated grooves 30 and convex teeth 31. The corrugated grooves 30 are arranged along a circular array on the inner annular surface of the grinding bin 2, and the convex teeth 31 are evenly arranged on the side walls of the corrugated grooves 30. The fine particles are initially ground by the inner bin body 8 and then enter the interlayer space between the grinding bin 2 and the inner bin body 8. As the grinding bin 2 rotates, the fine particles further collide with the corrugated grooves 30 and the convex teeth 31, thereby improving the overall efficiency of the ball milling operation.

[0032] In the specific implementation process, the grinding bin 2 and the inner bin body 8 are both wear-resistant alloy steel cylindrical structures, which can increase the volume space while ensuring the structural strength.

[0033] In summary, the ball mill is provided with a grinding bin on the frame, a driving control mechanism is provided at the middle end of the outer portion of the grinding bin to control the rotation of the grinding bin, and at the same time, a covering support mechanism is provided at both ends of the grinding bin to provide limited support for the grinding bin, and the driving control mechanism is cooperated to control the rotation of the grinding bin, so as to achieve that the grinding bin remains stable under high-speed rotation, and the ball milling efficiency is effectively improved, and a layered grinding mechanism is provided in the grinding bin to further improve the service life of the grinding body, extend the maintenance time interval, thereby reducing the use cost of the ball mill, and then reducing the production cost, the structure is simple, and the stability is good, which solves the problem in the prior art that the rotating shaft is easy to deform due to the long mill itself, and the ball mill vibrates greatly when working, which is easy to cause damage to the device components, and some ball mills use an external drive to control the grinding bin, but the rotation speed is mostly low, which affects the ball milling efficiency, and at the same time, the internal structure of the grinding bin in the prior art is relatively simple, the grinding body wears quickly during operation, and the grinding body needs to be replaced frequently, resulting in high production cost.

[0034] The above technical solutions only reflect the preferred technical solutions of the technical solutions of the present invention. Some changes that may be made to certain parts thereof by technicians in this technical field all reflect the principles of the present invention and fall within the protection scope of the present invention.

Claims

1. A ball mill, comprising a frame and a grinding chamber, characterized in that: The grinding chamber is arranged on a frame, a driving control mechanism is arranged on the frame, the driving control mechanism is connected to the middle of the grinding chamber, a covering support mechanism is symmetrically arranged at both ends of the grinding chamber, the covering support mechanism is connected to the frame, and a layered grinding mechanism is arranged in the grinding chamber; The drive control mechanism comprises: a fixed ring, a gear ring, an auxiliary limit assembly and a drive control structure, wherein the fixed ring is welded to the middle position of the outer wall of the grinding bin, the gear ring is fixedly sleeved on the fixed ring, the auxiliary limit assembly is arranged on the frame, and one end is meshed with the gear ring, and the drive control structure is arranged on one side of the frame, and one end is meshed with the gear ring; The enveloping support mechanism comprises: a vertical frame, an annular frame and a rolling support assembly, wherein the vertical frame is arranged on the frame and located at the lower part of the grinding bin, the annular frame is sleeved outside the grinding bin and fixedly connected to the vertical frame, and the rolling support assembly is arranged inside the annular frame and slidably connected to the outer wall of the grinding bin; The layered grinding mechanism comprises: a support frame, an inner layer bin body, an inner layer grinding assembly and an outer layer grinding assembly, wherein the support frame is arranged in the grinding bin, the inner layer bin body is arranged on the support frame, a certain distance is left between the inner layer bin body and the inner annular surface of the grinding bin, a plurality of discharge holes are evenly opened on the side wall of the inner layer bin body, the inner layer grinding assembly is arranged on the inner annular surface of the inner layer bin body and is staggered with the discharge holes, and the outer layer grinding assembly is arranged on the inner annular surface of the grinding bin; The auxiliary limiting assembly includes: a fixed seat, a door frame and an auxiliary gear, wherein the fixed seat is arranged on the frame, the door frame is arranged on the fixed seat, and the auxiliary gear is rotatably sleeved on the crossbeam of the door frame and meshed with the gear ring; The grinding bin and the inner bin body are both wear-resistant alloy steel cylindrical structures.

2. A ball mill according to claim 1, characterized in that: The drive control structure includes: a drive motor, a reducer and a transmission connection assembly. The drive motor is arranged on a frame and located on one side of the grinding bin. The input end of the reducer is connected to the drive end of the drive motor. One end of the transmission connection assembly is connected to the output end of the reducer, and the other end is meshed with the ring gear.

3. A ball mill according to claim 2, characterized in that: The transmission connection assembly includes: a fixed frame, a transmission shaft, a driving gear and a driven gear. The fixed frame is arranged on one side of the output end of the reducer, the transmission shaft is rotatably inserted in the fixed frame, and one end is connected to the output end of the reducer, the driving gear is fixedly sleeved on the transmission shaft, and the driven gear is rotatably arranged in the fixed frame and meshes with the driving gear and the ring gear respectively.

4. A ball mill according to claim 3, characterized in that: The fixing frame is provided with an auxiliary oiling assembly, and the auxiliary oiling assembly includes: an oil storage bin, an oiling nozzle, a cylinder, a movable rod and a push plate. The oil storage bin is arranged on one side of the fixing frame, and one end of the oiling nozzle is directly opposite to the side of the driven gear. The oiling nozzle is inserted on one end of the oil storage bin and directly opposite to the driven gear position. The cylinder is arranged on one side of the oil storage bin, one end of the movable rod is connected to the piston end of the cylinder, and the other end extends into the oil storage bin. The push plate is arranged in the oil storage bin and connected to the movable rod. The size of the push plate matches the inner diameter size of the oil storage bin.

5. A ball mill according to any one of claims 1 to 4, characterized in that: The rolling support assembly includes: an annular groove, a bearing and a sliding ring. The annular groove is arranged on the inner wall surface of the annular frame, the bearing is fixedly arranged in the annular groove, and the sliding ring is fixedly sleeved on the outer wall surface of the grinding bin and has an interference fit with the inner ring of the bearing.

6. A ball mill according to claim 5, characterized in that: The inner grinding assembly includes: a bolt connector and an impact column. The bolt connector is arranged on the inner annular surface of the inner layer bin body, and one end extends to the outside of the liner bin body. The impact column is fixedly arranged in the inner layer bin body and fixedly connected to one end of the bolt connector.

7. A ball mill according to claim 6, characterized in that: The bolt connection includes: a positioning stud, a fastening nut and a connecting seat. A plurality of assembly threaded holes are opened on the inner warehouse body. The positioning stud is screwed into the threaded hole, and one end extends to the outside of the inner warehouse body. The fastening nut is spirally sleeved on the exposed end of the positioning stud. The connecting seat is welded to the other end of the positioning stud and fits with the inner warehouse body. The connecting seat is fixedly connected to the impact column.

8. A ball mill according to claim 7, characterized in that: The outer grinding assembly comprises: corrugated grooves and convex teeth. The corrugated grooves are arranged on the inner annular surface of the grinding bin along an annular array, and the convex teeth are evenly arranged on the side walls of the corrugated grooves.

Images