Graphite particle grinding equipment

Abstract

The invention relates to the technical field of graphite grinding, in particular to graphite particle grinding equipment which comprises a mounting frame, a separation tank fixed to the middle of the mounting frame, an exhaust fan mounted at the upper end of the separation tank and a grinding device arranged in the separation tank. A fixing ring frame is arranged on the side, close to the rotating chassis, of the protective net, the section of the protective net is arc-shaped, and the side, away from the rotating chassis, of the protective net is higher than the side close to the rotating chassis; and a turning assembly is arranged on the side, close to the rotating base plate, of the protective net and comprises a rotating ring, a plurality of elastic pieces, a plurality of extrusion plates and a connecting ring, the edge of the rotating base plate is rotationally sleeved with the rotating ring, and the elastic pieces are annularly and fixedly connected between the rotating ring and the protective net. According to the graphite grinding device, sufficient grinding of graphite is guaranteed, meanwhile, later manual operation is not needed, and the graphite grinding efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of graphite grinding, in particular to a graphite particle grinding device. Background Art

[0002] The refinement of graphite particles can significantly increase their specific surface area and activity, thereby improving their overall performance. At the same time, the refined graphite particles can also be used to prepare conductive coatings, nanographite materials, etc., further broadening the application field of graphite. Grinding settings are required during the grinding process, including Raymond grinders.

[0003] The Chinese patent with the publication number CN217313678U discloses a graphite processing Raymond mill structure, including a base, a mounting frame and a mill cylinder, the mounting frame is mounted on the upper surface of the base, the mill cylinder is mounted on the upper surface of the mounting frame, a rotating rod is mounted on the inner surface of the mill cylinder, a first mounting plate and a second mounting plate are mounted on the outer surface of the rotating rod, a plurality of connecting blocks are mounted on the outer surface of the first mounting plate, a spring is mounted on the lower surface of the connecting block, and a plurality of grinding rollers are mounted on the inner surface of the second mounting plate. Compared with the traditional graphite processing Raymond mill, the above structure does not have a grinding dead angle, and the scraper moves the grinding ring of the graphite raw material box, so that the grinding is more sufficient.

[0004] However, due to the existence of grinding gaps in the grinding device, part of the graphite falls from the gaps without being fully ground, which reduces the grinding effect and requires manual transfer of the material below, affecting the grinding efficiency. Summary of the invention

[0005] The purpose of the present invention is to solve the shortcomings of the prior art that part of the graphite falls from the gap without being fully ground, which reduces the grinding effect and requires manual transfer of the material below, affecting the grinding efficiency, and proposes a graphite particle grinding device.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions: A graphite particle grinding device, comprising: a mounting frame, a separation tank fixed in the middle of the mounting frame, an exhaust fan installed at the upper end of the separation tank, and a grinding device arranged inside the separation tank, wherein the grinding device comprises a rotating chassis, a protective net is arranged at the edge of the rotating chassis, a fixed ring frame is arranged on the side of the protective net close to the rotating chassis, the cross section of the protective net is arc-shaped, and the side away from the rotating chassis is higher than the side close to the rotating chassis; A flip assembly is provided on one side of the protective net close to the rotating chassis, and the flip assembly includes a rotating ring, a plurality of elastic sheets, a plurality of extrusion plates and a connecting ring. The rotating ring is rotatably sleeved on the edge of the rotating chassis, a plurality of the elastic sheets are annularly fixedly connected between the rotating ring and the protective net, the extrusion plate is fixedly connected to the bottom end of the elastic sheet, and the connecting ring is fixedly connected between the plurality of extrusion plates to form a pressure ring, and the pressure ring is an arc-shaped ring, and one side close to the rotating chassis is higher than the other side; The edge of the rotating chassis is annularly and equidistantly provided with a plurality of rolling assemblies, and the plurality of rolling assemblies are used for grinding graphite particles located on the flipping assembly.

[0007] Preferably, the rotating chassis is a truncated cone-shaped disk, and the bottom area is larger than the top area. A plurality of separation strips are annularly fixedly connected to the rotating chassis to divide the rotating chassis into a plurality of lead-out spaces.

[0008] Preferably, the grinding device also includes a mounting disk, a plurality of grinding wheels, a grinding tube and a driving motor. The mounting disk is fixedly mounted on the upper end of the rotating chassis, and a plurality of mounting openings are opened on the side of the mounting disk. The plurality of grinding wheels rotate inside the mounting openings to form a plurality of grinding rotating layers. The grinding tube is fixedly mounted in the separation tank, and a plurality of grinding spaces of different sizes for grinding are formed between the grinding rotating layers. The driving motor is fixedly mounted on the bottom of the mounting frame, and the output end is used to drive the rotating chassis to rotate.

[0009] Preferably, the rolling assembly comprises a driving rod and a grinding block, wherein the driving rod is mounted on a side of a rotating chassis, and the grinding block is fixedly connected to an end of the driving rod for grinding graphite particles.

[0010] Preferably, the grinding block is gourd-shaped, and has a larger volume at one end close to the rotating chassis, and is used for extruding and grinding the graphite particles located inside the pressure ring.

[0011] Preferably, a plurality of air inlets are provided at the bottom of the separation tank, filters are provided inside the air inlets, and the exhaust fan generates air flow from bottom to top.

[0012] Preferably, a plurality of reset components are arranged inside the fixed ring frame, and the plurality of reset components are respectively connected to a plurality of extrusion plates and are used to drive the extrusion plates to reset elastically.

[0013] Preferably, the reset assembly includes a connecting rod, an extension rod and a spring shaft, the spring shaft is installed below the fixed ring frame, the extension rod is fixedly connected to the spring shaft, one end of the connecting rod is elastically connected below the extrusion plate, and the other end is rotatably connected to the end of the extension rod.

[0014] Preferably, the length of one end of the extension rod close to the extrusion plate is shorter than the length of the other end close to the protective net, and the extension rod and the spring shaft form a lever. When the extrusion plate drives one end of the extension rod to move downward, the other end of the extension rod moves upward.

[0015] Preferably, an end of the extension rod away from the extrusion plate is fixedly connected to a striking rod, and the striking rod is vertically fixedly connected to the end of the extension rod for striking the protective net.

[0016] Compared with the prior art, the present invention has the following beneficial effects: Part of the unfinished graphite falls onto the protective net under its own gravity, and falls onto the flipping assembly along the surface of the protective net. During the rotation of multiple rolling assemblies, the unfinished graphite is fully ground. During the rolling process, the rolling assemblies exert an extrusion effect on the extrusion plate, causing the extrusion plate to deform under the action of the elastic sheet. After the rolling assemblies are separated from the extrusion plate, the extrusion plate is reset under the elastic action of the elastic sheet and the connecting ring, and the ground graphite is ejected toward the protective net, and the re-ground graphite is separated. This continuous cycle of grinding and separation ensures that the graphite is fully ground, and no subsequent manual operation is required, thereby improving the efficiency of graphite grinding. When the ground graphite powder falls onto the rotating chassis, the powder is dispersed and falls onto multiple outlet spaces to avoid the powder piling up. The powder rolls onto the protective net through the arc-shaped side of the rotating chassis. At the same time, the powder is affected by the centrifugal force on the rotating chassis and thrown onto the protective net, so that the graphite powder can be quickly separated. The fallen graphite particles are evenly dispersed into the grinding space. As the grinding wheel rotates in the grinding space, the graphite particles are rotated and ground. Due to the different sizes of different grinding spaces, graphite particles of different sizes can be quickly ground in layers, thereby improving the grinding effect of the graphite particles. By separating particles with wind power, it can achieve rapid screening, and at the same time, the particles that do not meet the standards can be collected and ground again, which reduces the waste of raw materials and improves the screening efficiency; The connecting rod moves upward under the elastic action of the spring shaft, thereby pushing the extrusion plate upward, so that the extrusion plate can be quickly reset. During the reset process, a thrust is generated on the graphite on the flip assembly, pushing the ground graphite onto the protective net, and the graphite is screened again. The impact rod is used to impact the protective net, causing it to vibrate and impact the graphite on it, separating the blocked graphite from the net and avoiding blockage of the net by graphite. Impacting the net not only ensures the normal flow of air and the separation effect, but also allows the insufficiently ground graphite to be transferred to the flipping assembly for sufficient grinding. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a front structural schematic diagram of a graphite particle grinding device proposed by the present invention; Figure 2 A schematic diagram of the bottom structure of a graphite particle grinding device proposed by the present invention; Figure 3 A schematic diagram of the internal structure of a separation tank of a graphite particle grinding device proposed in the present invention; Figure 4 A schematic diagram of the structure of a grinding device of a graphite particle grinding device proposed by the present invention; Figure 5 A schematic diagram of the structure of a rotating chassis of a graphite particle grinding device proposed by the present invention; Figure 6 A schematic diagram of the structure of a mounting frame for a graphite particle grinding device proposed by the present invention; Figure 7 A schematic diagram of the rolling assembly structure of a graphite particle grinding device proposed by the present invention; Figure 8 A schematic diagram of the cross-sectional structure of a rotating chassis of a graphite particle grinding device proposed by the present invention; Fig. 9 for Figure 8 A magnified view of the structure at center A; Fig.10 A schematic diagram of the bottom surface structure of a protective screen for a graphite particle grinding device proposed in the present invention; Fig.11 This is a schematic structural diagram of a reset assembly of a graphite particle grinding device proposed in the present invention.

[0018] In the figure: 1. mounting frame; 2. separation tank; 3. exhaust fan; 4. grinding device; 41. rotating chassis; 42. mounting plate; 43. grinding wheel; 44. grinding tube; 45. driving motor; 5. protective net; 6. flip assembly; 61. rotating ring; 62. elastic sheet; 63. extrusion plate; 64. connecting ring; 7. rolling assembly; 71. driving rod; 72. grinding block; 8. reset assembly; 81. connecting rod; 82. extension rod; 83. spring shaft; 9. impact rod; 10. fixed ring frame; 11. air inlet; 12. filter. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0020] The terms such as "upper", "lower", "left", "right", "middle" and "one" used in the present invention are only for the convenience of description and are not used to limit the scope of the present invention. Changes or adjustments to their relative relationships should be regarded as the scope of the present invention without substantially changing the technical content.

[0021] Reference Figure 1-Figure 11 , a graphite particle grinding device, comprising: a mounting frame 1, a separation tank 2 fixed in the middle of the mounting frame 1, an exhaust fan 3 installed at the upper end of the separation tank 2 and a grinding device 4 arranged inside the separation tank 2, the grinding device 4 comprising a rotating chassis 41, a protective net 5 is arranged at the edge of the rotating chassis 41, a fixed ring frame 10 is arranged on the side of the protective net 5 close to the rotating chassis 41, the cross section of the protective net 5 is arc-shaped, and the side away from the rotating chassis 41 is higher than the side close to the rotating chassis 41; A flip assembly 6 is provided on the side of the protective net 5 close to the rotating chassis 41, and the flip assembly 6 includes a rotating ring 61, a plurality of elastic sheets 62, a plurality of extrusion plates 63 and a connecting ring 64. The rotating ring 61 is rotatably sleeved on the edge of the rotating chassis 41, and a plurality of the elastic sheets 62 are annularly fixedly connected between the rotating ring 61 and the protective net 5. The extrusion plate 63 is fixedly connected to the bottom end of the elastic sheet 62, and the connecting ring 64 is fixedly connected between the plurality of extrusion plates 63 to form a pressure ring. The pressure ring is an arc-shaped ring, and one side close to the rotating chassis 41 is higher than the other side. The edge of the rotating chassis 41 is provided with a plurality of rolling assemblies 7 at equal intervals in an annular shape. The plurality of rolling assemblies 7 are used to grind the graphite particles on the turning assembly 6 .

[0022] In the embodiment of the above technical solution, graphite particles are introduced from the feed port on the separation tank 2, the graphite is ground by the grinding device 4, and the exhaust fan 3 above generates wind force from bottom to top, thereby completing the separation of graphite powder.

[0023] At this time, some of the unground graphite falls onto the protective net 5 under the action of its own gravity, and at the same time falls onto the flipping component 6 along the surface of the protective net 5. During the rotation, multiple rolling components 7 fully grind the unground graphite. At the same time, the rolling component 7 will exert an extrusion effect on the extrusion plate 63 during the rolling process, causing the extrusion plate 63 to deform under the action of the elastic sheet 62. After the rolling component 7 is separated from the extrusion plate 63, the extrusion plate 63 will be reset under the elastic action of the elastic sheet 62 and the connecting ring 64, and the ground graphite will be ejected toward the protective net 5, and the re-ground graphite will be separated. Such continuous cycle of grinding and separation ensures the sufficient grinding of the graphite, and at the same time, no manual operation is required at the later stage, thereby improving the efficiency of graphite grinding.

[0024] The preferred technical solution in this embodiment is: Reference Figure 3-5 The rotating chassis 41 is a truncated cone-shaped disk, and the bottom area is larger than the top area. A plurality of separation strips are annularly fixedly connected to the rotating chassis 41 to separate the rotating chassis 41 into a plurality of lead-out spaces.

[0025] When the ground graphite powder falls onto the rotating chassis 41, the powder is dispersed and falls onto multiple export spaces to prevent the powder from piling up. It rolls through the curved side of the rotating chassis 41 and falls onto the protective net 5. At the same time, the powder is affected by the centrifugal force on the rotating chassis and is thrown onto the protective net 5, thereby facilitating the rapid separation of the graphite powder.

[0026] Reference Figure 3-4 The grinding device 4 also includes a mounting plate 42, a plurality of grinding wheels 43, a grinding tube 44 and a driving motor 45. The mounting plate 42 is fixedly mounted on the upper end of the rotating chassis 41, and a plurality of mounting openings are opened on the side of the mounting plate 42. The plurality of grinding wheels 43 rotate inside the mounting openings to form a plurality of grinding rotating layers. The grinding tube 44 is fixedly mounted in the separation tank 2, and a plurality of grinding spaces of different sizes for grinding are formed between the grinding rotating layers. The driving motor 45 is fixedly mounted on the bottom of the mounting frame 1, and the output end is used to drive the rotating chassis 41 to rotate.

[0027] During grinding, the graphite particles are first introduced through the feed port above the separation tank 2, and the driving motor 45 drives the rotating chassis 41 and the mounting plate 42 to rotate, and the protrusions above the mounting plate 42 are used for rotational separation, and the fallen graphite particles are evenly dispersed into the grinding space. As the grinding wheel 43 rotates in the grinding space, the graphite particles are rotationally ground. Since the sizes of different grinding spaces are different, graphite particles of different sizes can be quickly ground in layers, thereby improving the grinding effect of the graphite particles.

[0028] Reference Figure 7-9 The rolling assembly 7 includes a driving rod 71 and a grinding block 72. The driving rod 71 is mounted on the side of the rotating chassis 41. The grinding block 72 is fixedly connected to the end of the driving rod 71 for grinding graphite particles. The grinding block 72 is gourd-shaped, and has a larger volume at one end close to the rotating bottom plate 41 , and is used for extruding and grinding the graphite particles inside the pressure ring.

[0029] During use, the driving rod 71 can drive the grinding block 72 to move up and down, thereby adjusting the grinding force of the grinding block 72. When grinding the fallen graphite particles, the grinding block 72 will deflect downward, thereby squeezing the entire flipping assembly 6 through the large end, causing the elastic sheet 62 to be pulled and deformed, and a large number of graphite particles that have not been separated by wind force are offset and guided to the position of the extrusion plate 63, so that the graphite particles are fully squeezed and ground between the extrusion plate 63 and the grinding block 72.

[0030] At the same time, the smaller end of the gourd-shaped grinding block 72 will squeeze the side of the elastic sheet 62 to squeeze and fix the side of the elastic sheet 62, thereby avoiding excessive stretching of the elastic block and improving the supporting force of the extrusion plate 63.

[0031] Reference Figure 6 A plurality of air inlets 11 are provided at the bottom of the separation tank 2, a filter screen 12 is provided inside the air inlet 11, and the exhaust fan 3 generates air flow from bottom to top.

[0032] After the graphite particles are ground, in order to quickly separate the graphite powder, the exhaust fan 3 rotates and draws air from the top, thereby forming an air flow from bottom to top. The generated wind force can quickly separate the powdered and granular graphite. The granular graphite will not fly up due to its own gravity, and will fall onto the protective net 5, and will be transferred to the inside of the flip assembly 6 along the shape of the protective net 5 for secondary grinding.

[0033] By separating particles with wind power, rapid screening can be achieved. At the same time, particles that do not meet the standards can be collected and ground a second time, which reduces the waste of raw materials and improves the screening efficiency.

[0034] Reference Figure 8-10 A plurality of reset components 8 are disposed inside the fixed ring frame 10, and the plurality of reset components 8 are respectively connected to a plurality of extrusion plates 63, and are used to drive the extrusion plates 63 to reset elastically; The reset assembly 8 includes a connecting rod 81, an extension rod 82 and a spring shaft 83. The spring shaft 83 is installed below the fixed ring frame 10. The extension rod 82 is fixedly connected to the spring shaft 83. One end of the connecting rod 81 is elastically connected below the extrusion plate 63, and the other end is rotatably connected to the end of the extension rod 82.

[0035] When the grinding wheel 43 grinds the graphite particles that fall onto the flip assembly 6, it drives the extrusion plate 63 to move downward. Through the elasticity of the spring shaft 83, the extrusion plate 63 is supported by the connecting rod 81, thereby reducing the extrusion force on the elastic sheet 62, avoiding the extrusion force exceeding the elastic limit of the elastic sheet 62, and protecting the elastic sheet 62.

[0036] After the grinding wheel 43 is separated from the extrusion plate 63 above, the connecting rod 81 moves upward under the elastic action of the spring shaft 83, thereby pushing the extrusion plate 63 upward, so that the extrusion plate 63 can be quickly reset, and in the process of resetting, a thrust is generated on the graphite on the flipping assembly 6, pushing the ground graphite onto the protective net 5, and the graphite is screened again, so that the graphite that meets the conditions is separated by wind force, and the graphite that does not meet the conditions falls onto the flipping assembly 6 again under the action of gravity, and is ground again, thereby improving the yield of graphite. Through repeated flipping by itself, the steps of manual collection and re-grinding in the later stage are reduced, thereby improving the efficiency of graphite grinding.

[0037] Reference Fig.11 The length of one end of the extension rod 82 close to the extrusion plate 63 is shorter than the length of the other end close to the protective net 5. The extension rod 82 and the spring shaft 83 form a lever. When the extrusion plate 63 drives one end of the extension rod 82 to move downward, the other end of the extension rod 82 moves upward. One end of the extension rod 82 away from the extrusion plate 63 is fixedly connected to a striking rod 9 , and the striking rod 9 is vertically fixedly connected to the end of the extension rod 82 for striking the protective net 5 .

[0038] Since the grinding wheel 43 on the rotating chassis 41 will continuously generate graphite powder, the powder will fall onto the protective net 5. However, since some of the graphite is not completely ground and has a large volume and weight, it cannot be quickly separated by wind power. At the same time, part of the incompletely ground graphite will be transferred to the flip component 6 along the shape of the protective net 5, but another part of the graphite will be blocked in the mesh of the protective net 5, resulting in a decrease in the efficiency of air flow and affecting the rapid separation of the graphite powder.

[0039] In order to ensure the separation of graphite, when the grinding wheel 43 rotates to the top of the extrusion plate 63 and extrudes the extrusion plate 63, the connecting rod 81 moves downward, thereby driving the other end of the extension rod 82 to move upward, and the upward movement of the extension rod 82 drives the impact rod 9, and the impact rod 9 impacts the protective net 5, so that the protective net 5 vibrates, and impacts the graphite on the protective net 5, so that the blocked graphite is separated from the protective net 5, and the blockage of the protective net 5 caused by graphite is avoided. The impact on the protective net 5 not only ensures the normal flow of air and the separation effect, but also allows the graphite that is not fully ground to be transferred to the flipping component 6 for sufficient grinding.

[0040] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A graphite particle grinding device, comprising: A mounting frame (1), a separation tank (2) fixed to the middle of the mounting frame (1), an exhaust fan (3) installed at the upper end of the separation tank (2), and a grinding device (4) arranged inside the separation tank (2), characterized in that the grinding device (4) comprises a rotating chassis (41), a protective net (5) is arranged at the edge of the rotating chassis (41), a fixed ring frame (10) is arranged on the side of the protective net (5) close to the rotating chassis (41), and the cross-section of the protective net (5) is arc-shaped, and the side away from the rotating chassis (41) is higher than the side close to the rotating chassis (41); A flip assembly (6) is provided on one side of the protective net (5) close to the rotating chassis (41), the flip assembly (6) comprising a rotating ring (61), a plurality of elastic sheets (62), a plurality of extrusion plates (63) and a connecting ring (64), the rotating ring (61) being rotatably sleeved on the edge of the rotating chassis (41), the plurality of elastic sheets (62) being annularly fixedly connected between the rotating ring (61) and the protective net (5), the extrusion plate (63) being fixedly connected to the bottom end of the elastic sheet (62), and the connecting ring (64) being fixedly connected between the plurality of extrusion plates (63) to form a pressure ring, the pressure ring being an arc-shaped ring, and the side close to the rotating chassis (41) being higher than the other side; A plurality of rolling assemblies (7) are equidistantly arranged in an annular shape on the edge of the rotating chassis (41), and the plurality of rolling assemblies (7) are used to grind graphite particles located on the turning assembly (6).

2. A graphite particle grinding device according to claim 1, characterized in that: The rotating chassis (41) is a truncated cone-shaped disk, and the bottom area is larger than the top area. A plurality of separation strips are annularly fixedly connected to the rotating chassis (41), dividing the rotating chassis (41) into a plurality of outlet spaces.

3. A graphite particle grinding device according to claim 1, characterized in that: The grinding device (4) further comprises a mounting plate (42), a plurality of grinding wheels (43), a grinding tube (44) and a driving motor (45); the mounting plate (42) is fixedly mounted on the upper end of the rotating chassis (41), and a plurality of mounting openings are provided on the side of the mounting plate (42); the plurality of grinding wheels (43) rotate inside the mounting openings to form a plurality of grinding rotating layers; the grinding tube (44) is fixedly mounted in the separation tank (2), and a plurality of grinding spaces of different sizes for grinding are formed between the grinding rotating layers; the driving motor (45) is fixedly mounted on the bottom of the mounting frame (1), and the output end is used to drive the rotating chassis (41) to rotate.

4. A graphite particle grinding device according to claim 1, characterized in that: The rolling assembly (7) comprises a driving rod (71) and a grinding block (72); the driving rod (71) is mounted on the side of the rotating chassis (41); and the grinding block (72) is fixedly connected to the end of the driving rod (71) and is used for grinding graphite particles.

5. A graphite particle grinding device according to claim 4, characterized in that: The grinding block (72) is gourd-shaped and has a larger volume at one end close to the rotating bottom plate (41), and is used for extruding and grinding graphite particles located inside the pressure ring.

6. The graphite particle grinding device according to claim 1, characterized in that: The separation tank (2) is provided with a plurality of air inlets (11) at the bottom, a filter screen (12) is provided inside the air inlet (11), and the exhaust fan (3) generates air flow from bottom to top.

7. The graphite particle grinding device according to claim 1, characterized in that: A plurality of reset components (8) are arranged inside the fixed ring frame (10), and the plurality of reset components (8) are respectively connected to a plurality of extrusion plates (63) and are used to drive the extrusion plates (63) to reset elastically.

8. The graphite particle grinding device according to claim 7, characterized in that: The reset assembly (8) comprises a connecting rod (81), an extension rod (82) and a spring shaft (83); the spring shaft (83) is mounted below the fixed ring frame (10); the extension rod (82) is fixedly connected to the spring shaft (83); one end of the connecting rod (81) is elastically connected below the extrusion plate (63); and the other end is rotatably connected to the end of the extension rod (82).

9. The graphite particle grinding device according to claim 8, characterized in that: The length of one end of the extension rod (82) close to the extrusion plate (63) is shorter than the length of the other end close to the protective net (5). The extension rod (82) and the spring shaft (83) form a lever. When the extrusion plate (63) drives one end of the extension rod (82) to move downward, the other end of the extension rod (82) moves upward.

10. The graphite particle grinding device according to claim 8, characterized in that: An end of the extension rod (82) away from the extrusion plate (63) is fixedly connected to a striking rod (9), and the striking rod (9) is vertically fixedly connected to the end of the extension rod (82) and is used to strike the protective net (5).

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