Disassembling device for upper and lower press plates of a grinding ball machine

Abstract

This invention relates to a disassembly and assembly device for the upper and lower pressure plates of a ball mill. The device includes a hook assembly mounted on a guide plate, comprising a central rod, a top handle, and a bottom hook plate; the rod is extended as a whole; the hook assembly also includes an adjusting nut, which is located above the guide plate and threadedly connected to the rod; and an adapter, comprising an adapter plate and a swing arm; one end of the swing arm extends into the bottom of the adapter plate and connects to it, while the other end is horizontally rotatably connected to the inner wall of the inner protective ring near the guide plate. This invention's adapter allows for the loading and unloading of the upper or lower pressure plates using forklifts or other handling equipment outside the outer protective ring, and the use of a hanging component below the pressure plate to assist in the disassembly and assembly of the upper or lower pressure plates, reducing the difficulty of disassembling and assembling the upper and lower grinding plates of the ball mill.

Description

Technical Field

[0001] This invention relates to the technical field of disassembly and assembly of ball mills, and in particular to a disassembly and assembly device for the upper and lower pressure plates of a ball mill. Background Technology

[0002] The installation and removal of the upper and lower pressure plates are the most difficult tasks. The upper pressure plate connects to the pressure plate and the pressure transmission device; symmetrical vertical guide pillars are located on both sides of the upper pressure plate; a guide plate is located between the pressure plate and the guide pillars; the guide plate slides vertically with the pressure plate and connects to it; the lower pressure plate connects to the rotating plate; the rotating plate is fitted with a rotating channel; the inner and outer edges of the rotating channel are equipped with inner and outer protective rings. These inner and outer protective rings extend upwards, exceeding the installation position of the lower pressure plate. The installation space for the upper and lower pressure plates is narrow, and they are quite heavy, making it very difficult to insert them into the space between the pressure plate and the rotating plate. Currently, the installation and removal of the upper and lower pressure plates are all done manually. Existing technologies, such as the patent with authorization announcement number CN209288924U, describe an automatic pressurizing device for a steel ball grinding machine. This device includes a horizontally rotatable hook on the guide plate. This hook is primarily used to attach the upper pressure plate, and can also hold the upper pressure plate in place after it has been inserted, facilitating its assembly and disassembly. However, this method does not solve the technical problem of manually inserting the upper and lower pressure plates, nor does it aid in the assembly and disassembly of the lower pressure plate. Summary of the Invention

[0003] The purpose of this invention is to solve the above-mentioned problems and provide a disassembly and assembly device for the upper and lower pressure plates of a ball grinding machine.

[0004] The technical solution of the present invention is: a disassembly and assembly device for the upper and lower pressure plates of a ball grinding machine includes a hook component set on a guide plate, the hook component including a rod in the middle, a handle at the top and a hook plate at the bottom; The rod body is extended as a whole, so that the hook plate can also hook the lower pressure plate, which also facilitates the loading and unloading of the lower pressure plate; the hook component also includes an adjusting nut; the adjusting nut is located above the guide plate and is threadedly connected to the rod body; the length of the rod body located below the guide plate can be adjusted by adjusting the adjusting nut to accommodate the loading and unloading of the upper and lower pressure plates; Adapter The adapter includes an adapter plate and a swing arm; one end of the swing arm extends into the bottom of the adapter plate and connects to the adapter plate, while the other end is horizontally rotatably connected to the inner wall of the inner protective ring near the guide plate; the swing arm can swing horizontally, allowing the adapter plate to swing below the pressure plate or to the outside of the outer protective ring; the adapter plate can temporarily store the upper or lower pressure plate; when the adapter plate is outside the outer protective ring, the upper or lower pressure plate can be loaded or unloaded using forklifts or other handling equipment; when the adapter plate swings to below the pressure plate, it is convenient to use a hanging component to attach the upper or lower pressure plate, which is beneficial for loading and unloading the upper or lower pressure plate.

[0005] Preferably, the handle extends outward from the upper side of the rod; the handle and the hook plate are aligned vertically, so that the position of the hook plate can be determined by the position of the handle, which is convenient for the hook to be attached to the upper or lower pressure plate.

[0006] Preferably, a square post extends coaxially upward from the upper end of the rod; the inner end of the handle is provided with a square hole that matches the square post; the directional post is inserted into the square hole; the upper end of the square post is provided with a threaded post; the threaded post is threaded with a mounting nut; the mounting nut abuts against the upper end of the handle; the inner end of the handle and the rod are coaxially fixed.

[0007] Preferably, the adapter also includes an operating lever; the operating lever is vertically mounted on the top surface of the adapter plate; the operating lever facilitates the horizontal swing of the adapter plate; if necessary, the operating lever can lift one corner of the upper / lower pressure plate to facilitate the attachment of hanging components.

[0008] Furthermore, the upper end of the operating lever is bent to one side to facilitate hand operation and also to avoid impact damage to the upper / lower pressure plate.

[0009] Furthermore, the swing arm includes two parallel vertical plates; a radial channel is provided between the two vertical plates along the radial direction of the adapter plate; the vertical plates can increase the swing arm's support capacity for the adapter plate.

[0010] Furthermore, the operating lever extends through the adapter plate and beyond the upper edge of the outer protective ring; the operating lever can lock the outer protective ring when the adapter plate swings to the outside, preventing the adapter plate from swinging back below the pressure plate.

[0011] Furthermore, the lower part of the operating lever is provided with an upper limit nut, a return spring, and a lower limit nut in sequence; the upper limit nut is located above the adapter plate and is threadedly connected to the operating lever; the return spring is located between the adapter plate and the lower limit nut; the lower limit nut is threadedly connected to the operating lever; the lower end of the operating lever can automatically return to its original position after being pulled outward, which is convenient for operation.

[0012] Furthermore, the operating handle is positioned on the radial channel; two vertical plates can clamp the lower part of the operating lever, increasing its ability to hold the outer protective ring.

[0013] Preferably, the inner wall of the inner protective ring is provided with an inwardly extending ear plate; the end of the swing arm is provided with an L-shaped block; the end of the L-shaped block is hinged to the ear plate; the two vertical plates can clamp the lower part of the operating lever, increasing its ability to hold the outer protective ring.

[0014] The beneficial effects of the present invention are as follows: The disassembly and assembly device for the upper and lower pressure plates of the ball mill of the present invention has the following advantages: (1) The adapter of the present invention can use a forklift or other handling equipment to load and unload the upper or lower pressure plate on the outside of the outer protective ring, and use a hanging component below the pressure plate to assist in the disassembly and assembly of the upper or lower pressure plate, which reduces the difficulty of disassembling and assembling the upper and lower grinding plates of the ball mill. (2) The operating handle of the present invention can facilitate the horizontal swing of the adapter plate; when necessary, the operating handle can lift one corner of the upper pressure plate / lower pressure plate to facilitate the hanging of the hanging components. Attached Figure Description

[0015] Figure 1 This is a top partial sectional view of the disassembly and assembly device for the upper and lower pressure plates of the ball mill of the present invention in use. Figure 2 yes Figure 1 AA section view; Figure 3 This is a perspective view of the disassembly and assembly device for the upper and lower pressure plates of the ball mill of the present invention in use; Figure 4 This is a 3D view of the hook assembly after the adjusting nut has been removed; Figure 5 This is a half-sectional view of the hook assembly after the adjusting nut has been removed; Figure 6 yes Figure 5 BB cross-sectional view; Figure 7 It is a 3D view of the adapter; Figure 8 This is a radial sectional view of the adapter; Figure 9 These are actual photographs of the disassembly and assembly device for the upper and lower pressure plates of the ball mill of this invention. Figure 1 ; Figure 10 These are actual photographs of the disassembly and assembly device for the upper and lower pressure plates of the ball mill of this invention. Figure 2 ; In the diagram: 01. Upper pressure plate, 02. Lower pressure plate, 03. Pressure plate, 04. Pressure transmission device, 05. Guide column, 06. Guide plate, 07. Rotating disc, 08. Rotating channel, 081. Inner protective ring, 0811. Ear plate, 082. Outer protective ring, 1. Hook component, 11. Rod body, 111. Square column, 112. Threaded column, 113. Mounting nut, 12. Handle, 121. Square hole, 13. Hook plate, 14. Adjusting nut, 2. Adapter component, 21. Adapter plate, 221. Vertical plate, 222. Radial channel, 223. L-shaped block, 23. Operating lever, 231. Upper limit nut, 232. Return spring, 233. Lower limit nut. Detailed Implementation

[0016] Example 1: See Figure 1-8 A disassembly and assembly device for the upper and lower pressure plates 02 of a ball grinding machine includes a hook 1 set on a guide plate 06. The hook 1 includes a rod 11 in the middle, a handle 12 at the top and a hook plate 13 at the bottom. The rod 11 is extended as a whole, so that the hook plate 13 can also hook the lower pressure plate 02, and it is also convenient to load and unload the lower pressure plate 02; the hook part 1 also includes an adjusting nut 14; the adjusting nut 14 is located above the guide plate 06 and is threadedly connected to the rod 11; the length of the rod 11 located below the guide plate 06 can be adjusted by adjusting the nut 14 to adapt to the loading and unloading of the upper pressure plate 01 and the lower pressure plate 02; Adapter 2, The adapter 2 includes an adapter plate 21 and a swing arm; one end of the swing arm extends into the bottom of the adapter plate 21 and connects with the adapter plate 21, and the other end is horizontally rotatably connected to the inner wall of the inner protective ring 081 near the guide plate 06; the swing arm can swing horizontally, which can swing the adapter plate 21 below the pressure plate 03, and can also swing the adapter plate 21 outside the outer protective ring 082; the adapter plate 21 can temporarily store the upper pressure plate 01 or the lower pressure plate 02; when the adapter plate 21 is outside the outer protective ring 082, the upper pressure plate 01 or the lower pressure plate 02 can be loaded and unloaded using a forklift or other handling equipment; when the adapter plate 21 swings below the pressure plate 03, it is convenient to use a hanging component to hang the upper pressure plate 01 or the lower pressure plate 02, which is beneficial for loading and unloading the upper pressure plate 01 or the lower pressure plate 02.

[0017] Compared with the prior art, the present invention adds an adapter 2 and a hook 1; the adapter 2 can use a forklift or other handling equipment to load and unload the upper pressure plate 01 or the lower pressure plate 02 on the outside of the outer protective ring 082, and use a hanging component below the pressure plate 03 to assist in the disassembly and assembly of the upper pressure plate 01 or the lower pressure plate 02, reducing the difficulty of disassembling and assembling the upper and lower grinding plates of the ball grinding machine.

[0018] The handle 12 extends outward from the upper side of the rod 11; the handle 12 and the hook plate 13 overlap vertically, and the position of the hook plate 13 can be determined by the position of the handle 12, which makes it convenient for the hook part 1 to hook the upper pressure plate 01 or the lower pressure plate 02.

[0019] A square post 111 extends coaxially upward from the upper end of the rod 11; the inner end of the handle 12 is provided with a square hole 121 that matches the square post 111; the direction post is inserted into the square hole 121; the upper end of the square post 111 is provided with a threaded post 112; the threaded post 112 is threadedly fitted with a mounting nut 113; the mounting nut 113 abuts against the upper end of the handle 12; the inner end of the handle 12 is coaxially fixed to the rod.

[0020] The length of the square hole 121 is less than the length of the square post 111, so as to facilitate the installation of the nut 113 to clamp the inner end of the handle 12.

[0021] The adapter 2 also includes an operating lever 23; the operating lever 23 is vertically mounted on the top surface of the adapter plate 21; the operating lever can facilitate the horizontal swing of the adapter plate 21; when necessary, the operating lever can lift one corner of the upper pressure plate 01 / lower pressure plate 02 to facilitate the hanging of components.

[0022] The upper end of the operating lever 23 is bent to one side to facilitate hand operation and also to avoid collision damage to the upper pressure plate 01 / lower pressure plate 02.

[0023] The swing arm includes two parallel vertical plates 221; a radial channel 222 is provided between the two vertical plates 221 along the radial direction of the adapter plate 21; the vertical plates 221 can increase the swing arm's support capacity for the adapter plate 21.

[0024] The lower part of the operating lever 23 is provided with an upper limit nut 231, a return spring 232, and a lower limit nut 233 in sequence; the upper limit nut 231 is located above the adapter plate 21 and is threadedly connected to the operating lever 23; the return spring 232 is located between the adapter plate 21 and the lower limit nut 233; the lower limit nut 233 is threadedly connected to the operating lever 23; the lower end of the operating lever 23 can automatically return to its original position after being pulled outward, which is convenient for operation.

[0025] The working principle of this embodiment is as follows: The swing arm can swing horizontally, allowing the adapter plate 21 to swing below the pressure plate 03 or to the outside of the outer protective ring 082. The adapter plate 21 can temporarily store the upper pressure plate 01 or the lower pressure plate 02. When the adapter plate 21 is outside the outer protective ring 082, the upper pressure plate 01 or the lower pressure plate 02 can be loaded and unloaded using forklifts or other handling equipment. When the adapter plate 21 swings below the pressure plate 03, it is convenient to use the hanging component to attach the upper pressure plate 01 or the lower pressure plate 02, which is beneficial for loading and unloading the upper pressure plate 01 or the lower pressure plate 02. The length of the rod 11 located below the guide plate 06 can be adjusted by adjusting the nut 14 to accommodate the loading and unloading of the upper pressure plate 01 and the lower pressure plate 02. Using the hanging component to attach the upper pressure plate 01 or the lower pressure plate 02 reduces the assembly difficulty of the upper pressure plate 01 or the lower pressure plate 02.

[0026] The working process of this embodiment: Assembly of upper and lower pressure plates 02 1. Assembly of the lower pressure plate 02 1.1 Swing the adapter plate 21 to the outside of the outer sheath 082. By operating the lever 23, the adapter plate 21 is pulled, causing the adapter plate 21 to swing outward with the swing arm; 1.2 Use a forklift or other handling equipment to load the lower pressure plate 02 onto the adapter plate 21, and adjust the orientation of the lower pressure plate 02. When the lower pressure plate 02 is placed on the adapter plate 21, the operating lever 23 can be used to support the edge of the lower pressure plate 02, so that the lower pressure plate 02 is tilted relative to the top surface of the adapter plate 21, leaving a gap between it and the top surface of the adapter plate 21. 1.3 Adapter plate 21, carrying pressure plate 02, returns to below pressure plate 03; 1.4 Hook Component 1 for attaching the lower pressure plate 02 First, turn the hook plate 13 outwards and change the position of the adjusting nut 14 so that the adjusting nut 14 abuts against the handle 12; the hook plate 13 falls onto the adapter plate 21 or is at a position no higher than the height of the adapter plate 21; pull up the hook component 1 so that the hook plate 13 is just at the height of the gap left in 1.2; rotate the hanging component so that the hook plate 13 is inserted into the gap; then the pressure transmission device 04 lifts the guide plate 06 until the guide plate 06 abuts against the adjusting nut 14; the pressure transmission device 04 continues to lift the guide plate 06 so that the hook plate 13 hooks onto the bottom edge of the lower pressure plate 02 and rises together, completely detaching from the contact with the adapter plate 21; 1.5 Connect the lower pressure plate 02 Swing the adapter plate 21 to the outside of the outer protective ring 082; drive the lower pressure plate 02 down through the pressure transmission device 04 until the lower pressure plate 02 falls onto the rotating plate 07; since the position of the lower pressure plate 02 has been adjusted in step 1.2, when the lower pressure plate 02 falls onto the rotating plate 07, it is not much different from the correct installation position; rotate the handle 12 in the opposite direction to make the hook plate 13 leave the edge of the lower pressure plate 02; the pressure transmission device 04 lifts the hanging component up and returns to its original position; finally, simply adjust the position of the lower pressure plate 02 with tools such as a pry bar to connect the lower pressure plate 02 and the rotating plate 07. 2. Assembly of upper pressure plate 01 2.1 Use a forklift or other handling equipment to load the upper pressure plate 01 onto the adapter plate 21, and adjust the orientation of the upper pressure plate 01. When the upper pressure plate 01 is placed on the adapter plate 21, the operating lever 23 can be used to support the edge of the upper pressure plate 01, so that the upper pressure plate 01 is tilted relative to the top surface of the adapter plate 21, leaving a gap between the upper pressure plate 01 and the top surface of the adapter plate 21. 2.2 Adapter plate 21 returns to below pressure plate 03 with the upper pressure plate 01; 2.3 Hook Component 1 is attached to the upper pressure plate 01 First, turn the hook plate 13 outward and let it fall freely; adjust the position of the adjusting nut 14 so that the hook plate 13 is at the same height as the top surface of the adapter plate 21; then rotate the hanging component so that the hook plate 13 is inserted into the gap in step 2.1; then, use the pressure transmission device 04 to raise the hook component 1 so that the hook plate 13 is hooked onto the bottom edge of the pressure plate 01 and rises together, completely detaching from the contact with the adapter plate 21. 2.4 Connect the upper pressure plate 01 Slightly deflect the adapter plate 21 so that the operating lever 23 is removed from below the pressure plate 03, and there is no adapter plate 21 below the hook plate 13; lower the hook piece 1 through the pressure transmission device 04, and the upper pressure plate 01 is placed on the adapter plate 21; since the position of the upper pressure plate 01 has been adjusted in step 2.1, when the upper pressure plate 01 is placed on the adapter plate 21, it is not far from the correct installation position, and at least two screw mounting holes coincide; use screw connection to correct this error; specifically, first lower the pressure plate 03 with the pressure transmission device 04, and pause the descent of the pressure plate 03 when it is close to the top of the upper pressure plate 01. Lower; use a screw to pass through the pressure plate 03 and thread it to the upper pressure plate 01, and the length of the threaded connection is not large; then continue to lower the pressure plate 03, and the screw drives the upper pressure plate 01 to automatically correct the error; if the error is large, it is necessary to use tools such as a pry bar to adjust the position of the upper pressure plate 01; after tightening the screw, turn the hook plate 13 inward; pull up the hook part 1 so that the hook plate 13 is in contact with the bottom edge of the upper pressure plate 01; rotate the adjusting nut 14 to lock the hook plate 13 in contact with the bottom edge of the upper pressure plate 01; drive the pressure transmission device 04 to raise the upper pressure plate 01, and the pressure plate 03 returns to its original position.

[0027] 3. Disassembly of the lower pressure plate 02 Disconnect the lower pressure plate 02 from the rotating plate 07; rotate the adjusting nut 14 in the opposite direction to allow the hook plate 13 to fall naturally; rotate the hook component 1 to move the hook plate 13 away from the area of ​​the upper pressure plate 01 and turn it outward; lower the pressure plate 03 to its lowering limit position; adjust the position of the adjusting nut 14 to allow the hook plate 13 to fall below the edge of the lower pressure plate 02; rotate the hook component 1 to make the hook plate 13 face inward; lift the hook component 1 to make the hook plate 13 stably hooked onto the edge of the lower pressure plate 02; start the pressure transmission device 04 to make the hook... Plate 13 lifts the lower pressure plate 02; rotate the adapter plate 21 so that the adapter plate 21 is directly below the lower pressure plate 02; use the pressure transmission device 04 to lower the lower pressure plate 02 onto the adapter plate 21; rotate the hook 1 so that the hook plate 13 turns outward; lift the two hanging components or use the pressure rotation device to lift the pressure plate 03; rotate the adapter plate 21 in the opposite direction so that the lower pressure plate 02 moves away from the area below the pressure plate 03 and away from the area outside the rotation channel 08; use a forklift or other handling equipment to move the lower pressure plate 02 away.

[0028] 4. Disassembly of the upper pressure plate 01 Rotate the adapter plate 21 directly below the lower pressure plate 02; place the support on the adapter plate 21; use the pressure transmission device 04 to place the upper pressure plate 01 just on the support, leaving a gap between the upper pressure plate 01 and the adapter plate 21 for the hook plate 13 to leave; disconnect the connection between the upper pressure plate 01 and the pressure plate 03; rotate the adjusting nut 14 in the opposite direction to allow the hook plate 13 to fall naturally; rotate the hook component 1 to move the hook plate 13 away from the area below the upper pressure plate 01 and turn it outward; lift the pressure plate 03; rotate the adapter plate 21 in the opposite direction to move the upper pressure plate 01 away from the area below the pressure plate 03 and outside the rotation channel 08; use a forklift or other handling equipment to remove the upper pressure plate 01.

[0029] Example 2: Example 2 is basically the same as Example 1, and the similarities will not be repeated. The differences are: the inner wall of the inner protective ring 081 is provided with an inwardly extending ear plate 0811; the end of the swing arm is provided with an L-shaped block 223; the end of the L-shaped block 223 is hinged to the ear plate 0811; the two vertical plates 221 can clamp the lower part of the operating lever 23, increasing its ability to hold the outer protective ring 082.

[0030] The operating lever 23 passes through the adapter plate 21 and extends beyond the upper edge of the outer protective ring 082; the operating lever 23 can lock the outer protective ring 082 when the adapter plate 21 swings to the outside, preventing the adapter plate 21 from swinging back below the pressure plate 03.

[0031] The lower part of the operating lever 23 is provided with an upper limit nut 231, a return spring 232, and a lower limit nut 233 in sequence; the upper limit nut 231 is located above the adapter plate 21 and is threadedly connected to the operating lever 23; the return spring 232 is located between the adapter plate 21 and the lower limit nut 233; the lower limit nut 233 is threadedly connected to the operating lever 23; the lower end of the operating lever 23 can automatically return to its original position after being pulled outward, which is convenient for operation.

[0032] The operating handle is located on the radial channel 222; the two vertical plates 221 can clamp the lower part of the operating lever 23, increasing its ability to hold the outer protective ring 082.

[0033] The working process of this embodiment is basically the same as that of Embodiment 1; the similarities will not be repeated here, the differences are as follows: In step 1.1, when the operating lever 23 crosses the inner protective ring 081, the rotating channel 08, and the outer protective ring 082, the operating lever 23 is raised to a certain height, so that the operating lever 23 exceeds the upper edge of the inner protective ring 081 and the outer protective ring 082, but does not detach from the adapter plate 21; then, the operating lever 23 is lowered, so that the lower end of the operating lever 23 extends out of the bottom of the adapter plate 21 again, locking the outer protective ring 082, and locking the adapter plate 21 in a state away from the pressure plate 03; this is also the normal working state of the ball grinding machine; the adapter plate 21 suddenly swings between the pressure plate 03 and the rotating plate 07, interfering with the normal operation of the ball grinding machine.

Claims

1. A disassembly and assembly device for upper and lower pressure plates of a ball mill, comprising a hook assembly mounted on a guide plate, the hook assembly comprising a rod in the middle, a handle at the top, and a hook plate at the bottom; a pressure plate and a pressure transmission device are connected to the upper pressure plate; vertical guide columns are symmetrically arranged on both sides of the upper pressure plate; a guide plate is provided between the pressure plate and the guide columns; the guide plate is vertically slidingly engaged with the pressure plate and connected to the pressure plate; a rotating disk is connected to the lower pressure plate; a rotating channel is fitted around the rotating disk; an inner protective ring and an outer protective ring are provided along the inner and outer edges of the rotating channel; characterized in that... The rod body is extended as a whole; the hook component also includes an adjusting nut; the adjusting nut is located above the guide plate and is threadedly connected to the rod body. Adapter The adapter includes an adapter plate and a swing arm; one end of the swing arm extends into the bottom of the adapter plate and connects with the adapter plate, while the other end is horizontally rotatably connected to the inner wall of the inner protective ring near the guide plate.

2. The device for dismounting and mounting the upper and lower press plates of the grinding ball mill according to claim 1, characterized in that: The handle extends outward from the upper side of the rod; the handle and the hook plate are aligned vertically.

3. The disassembly and assembly device for the upper and lower pressure plates of the ball mill according to claim 1, characterized in that: A square post extends coaxially upward from the upper end of the rod; a square hole matching the square post is provided at the inner end of the handle; the directional post is inserted into the square hole; a threaded post is provided at the upper end of the square post; a mounting nut is threaded onto the threaded post; the mounting nut abuts against the upper end of the handle.

4. The disassembly and assembly device for the upper and lower pressure plates of the ball mill according to claim 1, characterized in that: The adapter also includes an operating lever; the operating lever is vertically mounted on the top surface of the adapter plate.

5. The disassembly and assembly device for the upper and lower pressure plates of the ball mill according to claim 1 or 4, characterized in that: The swing arm includes two parallel vertical plates; a radial channel is provided between the two vertical plates, which is arranged radially along the adapter plate.

6. The disassembly and assembly device for the upper and lower pressure plates of the ball mill according to claim 5, characterized in that: The operating lever passes through the adapter plate and extends beyond the upper edge of the outer protective ring.

7. The disassembly and assembly device for the upper and lower pressure plates of the ball mill according to claim 6, characterized in that: The lower part of the operating lever is provided with an upper limit nut, a return spring, and a lower limit nut in sequence; the upper limit nut is located above the adapter plate and is threadedly connected to the operating lever; the return spring is located between the adapter plate and the lower limit nut; the lower limit nut is threadedly connected to the operating lever.

8. The disassembly and assembly device for the upper and lower pressure plates of the ball mill according to claim 7, characterized in that: The operating handle is located on the radial channel.

9. The disassembly and assembly device for the upper and lower pressure plates of the ball mill according to claim 1, characterized in that: The inner wall of the inner protective ring is provided with an inwardly extending ear plate; the end of the swing arm is provided with an L-shaped block; the end of the L-shaped block is hinged to the ear plate.

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