Grinding device for high-purity graphite powder production

Abstract

The utility model discloses a grinding device for high-purity graphite powder production, which comprises a first box body and a second box body, a plurality of screening nets are arranged in the first box body from top to bottom, first blanking pipes corresponding to the screening nets in number are connected between the first box body and the second box body, and a plurality of groups of grinding components are arranged in the second box body; the grinding assembly comprises a grinding groove and a grinding rod, the grinding rod is rotationally arranged in the grinding groove, a first discharging opening is formed in the bottom of the grinding groove, and a discharging plate is fixedly arranged in the second box body; the multiple grinding rods are fixedly connected through a first rotating shaft, and the first rotating shaft is connected with a first motor. And a second discharging pipe is arranged on the second box body, the second discharging pipe is fixedly connected with a material conveying assembly, and the material conveying assembly communicates with the first box body and is used for conveying ground particles to the corresponding screening nets. According to the utility model, the multi-stage effective grinding is realized, the energy consumption of the grinding equipment is reduced, the graphite is circularly ground, the grinding efficiency is improved, and all graphite can be thoroughly ground.

Description

Technical Field

[0001] The utility model belongs to the technical field of graphite production, in particular to a grinding device for producing high-purity graphite powder. Background Art

[0002] Graphite powder is soft, black-gray, and greasy, and can stain paper. Its melting point, isolated from oxygen, exceeds 3000°C, making it one of the most heat-resistant minerals. At room temperature, graphite powder is chemically stable and insoluble in water, dilute acids, dilute alkalis, and organic solvents. Its high-temperature resistance and electrical conductivity make it suitable for use as a refractory, conductive, and wear-resistant lubricant. Graphite holds broad market potential as a supporting raw material in the production of new, high-efficiency energy devices such as fuel cells, lithium-ion batteries, and supercapacitors. Graphite for various applications requires natural graphite to be crushed and processed into qualified spherical graphite powder. Existing graphite particle grinding equipment lacks multi-stage screening during the grinding process, resulting in the mixing of large and small graphite particles. Large graphite particles can disrupt the fragmentation of smaller particles, preventing some small particles from being ground, leading to low grinding efficiency and uneven grinding. Utility Model Content

[0003] Based on the above background, the purpose of the present invention is to provide a grinding device for producing high-purity graphite powder.

[0004] In order to achieve the above objectives, the present invention adopts the following technical solutions:

[0005] A grinding device for producing high-purity graphite powder comprises a first box body and a second box body, wherein the first box body is provided with a feed hopper on the top and a discharge hopper on the bottom;

[0006] A plurality of screening nets are provided in the first box from top to bottom, and the screening apertures of the screening nets gradually decrease from top to bottom. A plurality of first discharge pipes are connected between the first box and the second box. The number of the first discharge pipes corresponds to the number of screening nets, and is used to feed particles that cannot be screened on the corresponding screening nets into the second box;

[0007] Several groups of grinding assemblies are provided in the second box from top to bottom, and the particle diameters that can be ground by the grinding assemblies gradually decrease from top to bottom; the grinding assemblies correspond to the first discharge pipe and are arranged on the side and lower part of the first discharge pipe, and the grinding assemblies include a grinding trough and a grinding rod, the grinding trough is fixedly provided on the inner wall of the second box, the grinding rod is rotatably provided in the grinding trough, and a first discharge port is provided at the bottom of the grinding trough, and a blanking plate is fixedly provided in the second box, and the blanking plate is provided below the corresponding grinding trough;

[0008] The plurality of grinding rods are fixedly connected via a first rotating shaft, one end of which extends out of the second housing and is connected to a first motor;

[0009] The second box body is provided with a plurality of second discharge ports, which correspond to the number of the discharge plates and are arranged above the discharge plates. A second discharge pipe is fixedly provided at the second discharge port, and the other end of the second discharge pipe is fixedly connected to a feeding assembly, which is connected to the first box body and is used to transport the ground particles to the corresponding screening net for further screening.

[0010] Preferably, the bottom of the grinding tank is inclined toward the first discharge port, so as to facilitate the grinding of graphite particles to fall onto the blanking plate from the first discharge port.

[0011] Preferably, the grinding rod is truncated cone-shaped, and the diameter of the upper end of the grinding rod is smaller than that of the lower end, thereby ensuring that the gap between the grinding rod and the grinding groove gradually becomes smaller, making it easier for graphite particles to enter between the grinding rod and the grinding groove and be ground.

[0012] Preferably, the feeding assembly includes a feeding pipe, one end of the feeding pipe is fixedly connected to the second feeding pipe, and the other end is connected to the first box through the third feeding pipe. A second rotating shaft is provided for rotation in the feeding pipe, and an auger blade is fixedly provided on the side of the second rotating shaft. One end of the second rotating shaft extends out of the feeding pipe and the second feeding pipe and is connected to the driving assembly.

[0013] Preferably, the driving assembly includes a driven transmission wheel, which is coaxially fixedly connected to the second rotating shaft, a first transmission belt is connected between adjacent driven transmission wheels, an active transmission wheel is provided on the side of the bottom second discharge tube, the active transmission wheel is connected to the driven transmission wheel on the same second discharge tube through a second transmission belt, a second motor is provided on the bottom second discharge tube, and the second motor is fixedly connected to the active transmission wheel.

[0014] Preferably, two transmission grooves are provided on the side of the driven transmission wheel, one of the transmission grooves is connected to the upper driven transmission wheel through a first transmission belt, and the other transmission groove is connected to the lower driven transmission wheel through the first transmission belt; one of the transmission grooves of the bottom driven transmission wheel is connected to the active transmission wheel through a second transmission belt.

[0015] Preferably, a plurality of first protrusions are provided on the outside of the grinding rod, and a plurality of second protrusions are provided inside the grinding groove, so as to improve the grinding accuracy.

[0016] Preferably, one end of the screening net is rotatably mounted on the inner wall of the first box, and the other end is fixedly connected to a sliding plate, and the sliding plate is slidably connected to the first box;

[0017] A sliding rod is fixed on the side wall of the first box body, one end of the sliding plate extends out of the first box body and is slidably arranged on the sliding rod, a spring is fixedly connected between adjacent sliding plates, and the spring is sleeved on the sliding rod; a third motor is fixed on the first box body, and the output end of the third motor is connected to a rotating disk, and the rotating disk rotates eccentrically on the first box body through a rotating shaft, and when the rotating disk rotates eccentrically, it can push the uppermost sliding plate to slide downward.

[0018] The utility model has the following beneficial effects:

[0019] Through the synchronous cooperation of the screening net, grinding assembly and feeding assembly, graphite with different particle sizes can fall into the corresponding grinding assembly for grinding, which can gradually reduce the mesh size of the graphite particles, realize multi-stage effective grinding, reduce the energy consumption of the grinding equipment, realize the cycle grinding of graphite, improve the grinding efficiency, and facilitate the thorough grinding of all graphite. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0021] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0022] Figure 2 This is a front structural diagram of the sliding plate of the present invention;

[0023] Figure 3 This is a schematic diagram of the cross-sectional three-dimensional structure of the material feeding assembly of the present utility model;

[0024] Figure 4 This is a schematic diagram of the internal structure of the first box body of the present invention;

[0025] Figure 5 This is a schematic diagram of the disassembled three-dimensional structure of the grinding assembly of the present invention;

[0026] Figure 6 This is a schematic diagram of the disassembled three-dimensional structure of the drive assembly and the second housing of the utility model. 1. First housing; 11. Feed hopper; 12. Discharge hopper; 13. Third discharge pipe;

[0027] 2. Second box; 21. Second discharge port; 22. Second discharge pipe;

[0028] 3. Screening net; 31. Sliding plate; 32. Sliding rod; 33. Spring; 34. Third motor; 35. Rotating disk;

[0029] 4. The first feeding pipe;

[0030] 5. Grinding assembly; 51. Grinding trough; 52. Grinding rod; 53. First discharge port; 54. Blanking plate; 55. First rotating shaft; 56. First motor; 57. First protrusion; 58. Second protrusion;

[0031] 6. Feed assembly; 61. Feed pipe; 62. Second rotating shaft; 63. Auger blade;

[0032] 7. Drive assembly; 71. Driven transmission wheel; 72. First transmission belt; 73. Active transmission wheel; 74. Second transmission belt; 75. Second motor; 76. Transmission slot. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0034] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0035] In addition, in this utility model, the descriptions of "first" and "second" are for descriptive purposes only and should not be understood as indicating or implying their relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features specified as "first" and "second" may explicitly or implicitly include at least one of such features. In addition, the technical solutions between the various embodiments can be combined with each other, but this must be based on the fact that they can be implemented by ordinary technicians in this field. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this utility model.

[0036] like Figure 1-6 As shown, a grinding device for producing high-purity graphite powder includes a first box body 1 and a second box body 2. The first box body 1 is provided with a feed hopper 11 on the top and a discharge hopper 12 on the bottom.

[0037] A plurality of screening nets 3 are provided in the first box 1 from top to bottom. The screening apertures of the screening nets 3 gradually decrease from top to bottom. A plurality of first discharge pipes 4 are connected between the first box 1 and the second box 2. The number of the first discharge pipes 4 corresponds to the number of the screening nets 3, and is used to feed the particles that cannot be screened on the corresponding screening nets 3 into the second box 2.

[0038] Several groups of grinding assemblies 5 are provided in the second housing 2 from top to bottom. The particle sizes that can be ground by the grinding assemblies 5 gradually decrease from top to bottom. The grinding assemblies 5 correspond to the first discharge pipe 4 and are provided on the side and lower side of the first discharge pipe 4. The grinding assemblies 5 include a grinding groove 51 and a grinding rod 52. The grinding groove 51 is fixed on the inner wall of the second housing 2. The grinding rod 52 is rotatably provided in the grinding groove 51. A first discharge port 53 is provided at the bottom of the grinding groove 51. A blanking plate 54 is fixed in the second housing 2 and is provided below the corresponding grinding groove 51.

[0039] A plurality of grinding rods 52 are fixedly connected via a first rotating shaft 55 , one end of the first rotating shaft 55 extends out of the second housing 2 and is connected to a first motor 56 ;

[0040] The second box body 2 is provided with a plurality of second discharge ports 21, the number of the second discharge ports 21 corresponds to the blanking plate 54, and is arranged above the blanking plate 54. A second blanking pipe 22 is fixedly provided at the second discharge port 21, and the other end of the second blanking pipe 22 is fixedly connected to a feeding assembly 6, which is connected to the first box body 1 and is used to transport the ground particles to the corresponding screening net 3 for further screening.

[0041] Graphite particles enter the first box 1 from the feed hopper 11, and are screened by the screen mesh 3 with the largest aperture. The graphite particles that pass the screening fall into the screen mesh 3 below. The graphite particles with large particle size roll through the inclined screen mesh 3 from the first discharge pipe 4 into the corresponding grinding groove 51 in the second box 2. The particles in the grinding groove 51 are ground by the grinding rod 52. The ground particles fall from the first discharge port 53 at the bottom of the grinding groove 51 onto the discharge plate 54, and enter the feeding assembly 6 from the first discharge port 21 and the second discharge pipe 22. Finally, they are transported to the first box 2 through the feeding assembly 6. The body 1 is screened again through the screening mesh 3 with the same aperture, and this process is repeated. Graphite particles of different particle sizes are screened through the screening mesh 3 and fed into the corresponding grinding assembly 5 for grinding. Finally, graphite powder is formed and discharged from the discharge hopper 12. Through the synchronous cooperation of the screening mesh 3, the grinding assembly 5 and the feeding assembly 6, graphite particles of different particle sizes can fall into the corresponding grinding assembly 5 for grinding, which can gradually reduce the mesh size of the graphite particles, realize multi-stage effective grinding, reduce the energy consumption of the grinding equipment, realize the cyclic grinding of graphite, improve the grinding efficiency, and facilitate the thorough grinding of all graphite.

[0042] Preferably, the bottom of the grinding tank 51 is inclined toward the first discharge port 53 to facilitate the ground graphite particles to fall from the first discharge port 53 onto the blanking plate 54 .

[0043] Preferably, the grinding rod 52 is truncated cone-shaped, and the diameter of the upper end of the grinding rod 52 is smaller than that of the lower end, thereby ensuring that the gap between the grinding rod 52 and the grinding groove 51 gradually becomes smaller, making it easier for graphite particles to enter between the grinding rod 52 and the grinding groove 51 and be ground.

[0044] Preferably, the feeding assembly 6 includes a feeding pipe 61, one end of which is fixedly connected to the second discharge pipe 22, and the other end is connected to the first box body 1 through the third discharge pipe 13. A second rotating shaft 62 is provided for rotation in the feeding pipe 61, and a screw blade 63 is fixedly provided on the side of the second rotating shaft 62. One end of the second rotating shaft 62 extends out of the feeding pipe 61 and the second discharge pipe 22 and is connected to the drive assembly 7.

[0045] The second rotating shaft 62 is driven to rotate by the driving assembly 7, and the ground graphite is transported from the second box 2 back to the top of the screening mesh 3 of the first box 1. After re-screening, the graphite with small particle size falls below, and the unqualified graphite passes through the screening mesh 3 again and falls into the second box 2 for re-grinding.

[0046] Preferably, the driving assembly 7 includes a driven transmission wheel 71, which is coaxially fixedly connected to the second rotating shaft 62, and a first transmission belt 72 is connected between adjacent driven transmission wheels 71. An active transmission wheel 73 is provided on the side of the bottom second discharge tube 22, and the active transmission wheel 73 is connected to the driven transmission wheel 71 on the same second discharge tube 22 through a second transmission belt 74. A second motor 75 is provided on the bottom second discharge tube 22, and the second motor 75 is fixedly connected to the active transmission wheel 73.

[0047] The second motor 75 drives the active transmission wheel 73 to rotate, which in turn drives the driven transmission wheel 71 at the bottom of the second transmission belt 74 to rotate, and drives the adjacent driven transmission wheel 71 to rotate through the second transmission belt 72 to realize the feeding of the feeding assembly 6.

[0048] Preferably, two transmission grooves 76 are provided on the side of the driven transmission wheel 71, one of the transmission grooves 76 is connected to the upper driven transmission wheel 71 through the first transmission belt 72, and the other transmission groove 76 is connected to the lower driven transmission wheel 71 through the first transmission belt 72; one of the transmission grooves 76 of the bottom driven transmission wheel 71 is connected to the active transmission wheel 73 through the second transmission belt 74.

[0049] Preferably, a plurality of first protrusions 57 are provided on the outside of the grinding rod 52, and a plurality of second protrusions 58 are provided inside the grinding groove 51, so as to improve the grinding accuracy.

[0050] Preferably, one end of the screening net 3 is rotatably mounted on the inner wall of the first box body 1, and the other end is fixedly connected to a sliding plate 31, which is slidably connected to the first box body 1;

[0051] A slide bar 32 is fixed on the side wall of the first box body 1, one end of the sliding plate 31 extends out of the first box body 1 and slides on the slide bar 32, a spring 33 is fixedly connected between adjacent sliding plates 31, and the spring 33 is sleeved on the slide bar 32; a third motor 34 is fixed on the first box body 1, and the output end of the third motor 34 is connected to a rotating disk 35, which rotates eccentrically on the first box body 1 through a rotating shaft. When the rotating disk 35 rotates eccentrically, it can push the uppermost sliding plate 31 to slide downward, and the third motor 3 The rotating disk 35 is driven to rotate eccentrically. When one end of the rotating disk 35 rotates to abut against the uppermost sliding plate 31, a downward thrust is generated on the sliding plate 31. The sliding plate 31 presses the spring 33. The spring 33 is compressed and generates a downward thrust on the lower sliding plate 31. When the rotating disk 35 is separated from the sliding plate 31, it bounces up due to the elastic force of the spring 33. At the same time, the lower sliding plate 31 vibrates up and down due to the elastic force of the spring 33, thereby driving the screening net 3 in the first box body 1 to vibrate, thereby improving the screening efficiency.

[0052] The working principle of the present invention is as follows: graphite particles enter the first box body 1 from the feed hopper 11, and are screened by the screening mesh 3 with the largest aperture. The graphite particles that have passed the screening fall into the screening mesh 3 below, and the graphite particles with large particle size roll through the inclined screening mesh 3 from the first discharge pipe 4 into the corresponding grinding groove 51 in the second box body 2. The particles in the grinding groove 51 are ground by the grinding rod 52, and the ground particles fall from the first discharge port 53 at the bottom of the grinding groove 51 onto the discharge plate 54, and enter the feeding assembly 6 from the first discharge port 21 and the second discharge pipe 22. The second motor 75 drives the active transmission wheel 73 to rotate, and the driven transmission wheel 71 at the bottom of the second transmission belt 74 rotates, and the adjacent driven transmission wheel 71 is driven to rotate through the second transmission belt 72, thereby driving the second rotating The shaft 62 rotates to transport the ground graphite from the second box body 2 back to the top of the screening mesh 3 of the first box body 1. After re-screening, the graphite with small particle size falls to the bottom, and the unqualified graphite passes through the screening mesh 3 again and falls into the second box body 2 for re-grinding. During the screening process, the third motor 34 drives the rotating disk 35 to rotate eccentrically. When one end of the rotating disk 35 rotates to abut against the top sliding plate 31, a downward thrust is generated on the sliding plate 31, and the sliding plate 31 squeezes the spring 33. The spring 33 is compressed and generates a downward thrust on the sliding plate 31 below. When the rotating disk 35 disengages from the sliding plate 31, it bounces up due to the elastic force of the spring 33. At the same time, the sliding plate 31 below vibrates up and down due to the elastic force of the spring 33, thereby driving the screening mesh 3 in the first box body 1 to vibrate, thereby improving the screening efficiency.

[0053] Of course, the above description is not a limitation of the present invention, and the present invention is not limited to the above examples. Changes, modifications, additions or substitutions made by technicians in this technical field within the essential scope of the present invention should also fall within the scope of protection of the present invention.

Claims

1. A grinding device for producing high-purity graphite powder, characterized in that: The first box body comprises a first box body and a second box body, wherein the first box body is provided with a feed hopper on the top and a discharge hopper on the bottom; A plurality of screening nets are provided in the first box from top to bottom, and the screening apertures of the screening nets gradually decrease from top to bottom. A plurality of first discharge pipes are connected between the first box and the second box, and the number of the first discharge pipes corresponds to the number of the screening nets; Several groups of grinding assemblies are provided in the second box from top to bottom; the grinding assemblies correspond to the first discharge pipe and are provided on the side and lower side of the first discharge pipe, the grinding assemblies include a grinding trough and a grinding rod, the grinding trough is fixedly provided on the inner wall of the second box, the grinding rod is rotatably provided in the grinding trough, a first discharge port is provided at the bottom of the grinding trough, a blanking plate is fixedly provided in the second box, and the blanking plate is provided below the corresponding grinding trough; The plurality of grinding rods are fixedly connected via a first rotating shaft, one end of which extends out of the second housing and is connected to a first motor; The second box body is provided with a plurality of second discharge ports, which correspond to the number of the discharge plates and are arranged above the discharge plates. A second discharge pipe is fixedly provided at the second discharge port, and the other end of the second discharge pipe is fixedly connected to a feeding assembly, which is connected to the first box body and is used to transport the ground particles to the corresponding screening net for further screening.

2. The grinding device for producing high-purity graphite powder according to claim 1, characterized in that: The bottom of the grinding tank is inclined toward the first discharge port.

3. The grinding device for producing high-purity graphite powder according to claim 2, characterized in that: The grinding rod is in a truncated cone shape, and the diameter of the upper end of the grinding rod is smaller than that of the lower end.

4. The grinding device for producing high-purity graphite powder according to claim 1, characterized in that: The feeding assembly includes a feeding pipe, one end of which is fixedly connected to the second feeding pipe, and the other end is connected to the first box through the third feeding pipe. A second rotating shaft is provided for rotation in the feeding pipe, and an auger blade is fixedly provided on the side of the second rotating shaft. One end of the second rotating shaft extends out of the feeding pipe and the second feeding pipe and is connected to the driving assembly.

5. The grinding device for producing high-purity graphite powder according to claim 4, characterized in that: The driving assembly includes a driven transmission wheel, which is coaxially fixedly connected to the second rotating shaft, a first transmission belt is connected between adjacent driven transmission wheels, an active transmission wheel is provided on the side of the bottom second discharge tube, the active transmission wheel is connected to the driven transmission wheel on the same second discharge tube through a second transmission belt, a second motor is provided on the bottom second discharge tube, and the second motor is fixedly connected to the active transmission wheel.

6. The grinding device for producing high-purity graphite powder according to claim 5, characterized in that: Two transmission grooves are provided on the side of the driven transmission wheel, one of the transmission grooves is connected to the upper driven transmission wheel through a first transmission belt, and the other transmission groove is connected to the lower driven transmission wheel through the first transmission belt; one of the transmission grooves of the bottom driven transmission wheel is connected to the active transmission wheel through a second transmission belt.

7. The grinding device for producing high-purity graphite powder according to any one of claims 1 to 6, characterized in that: A plurality of first protrusions are provided on the outside of the grinding rod, and a plurality of second protrusions are provided inside the grinding groove.

8. The grinding device for producing high-purity graphite powder according to claim 7, characterized in that: One end of the screening net is rotatably mounted on the inner wall of the first box, and the other end is fixedly connected to a sliding plate, which is slidably connected to the first box; A sliding rod is fixed on the side wall of the first box body, one end of the sliding plate extends out of the first box body and is slidably arranged on the sliding rod, a spring is fixedly connected between adjacent sliding plates, and the spring is sleeved on the sliding rod; a third motor is fixed on the first box body, and the output end of the third motor is connected to a rotating disk, and the rotating disk rotates eccentrically on the first box body through a rotating shaft, and when the rotating disk rotates eccentrically, it can push the uppermost sliding plate to slide downward.

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