A graphite crushing and grinding device for silicon carbide semiconductors

Abstract

The present invention relates to a graphite crushing and grinding device for silicon carbide semiconductors, comprising a cylinder, a plurality of legs fixedly arranged at the bottom of the cylinder, a feeding assembly arranged at the top of the cylinder, a crushing assembly rotatably arranged in the cylinder, a conveying assembly rotatably arranged on the outside of the crushing assembly, a rotating assembly arranged on the top of the conveying assembly, a grinding assembly arranged above the rotating assembly, a material receiving cover fixedly arranged on the outside of the cylinder, a linkage assembly arranged between the crushing assembly and the conveying assembly, the feeding assembly is used to put graphite into the cylinder, the linkage assembly is used to drive the crushing assembly and the conveying assembly to rotate in opposite directions, the crushing assembly is used to crush the graphite during rotation, the conveying assembly is used to convey the graphite at the bottom of the cylinder from bottom to top, the grinding assembly is used to grind the crushed graphite in cooperation with the rotating assembly, and the material receiving cover is used to collect graphite powder, thereby improving the crushing efficiency and crushing quality of the graphite.

Description

Technical Field

[0001] The present invention relates to the technical field of graphite processing devices, and more particularly to a graphite crushing and grinding device for silicon carbide semiconductors. Background Art

[0002] When producing and processing graphite, the graphite raw materials need to be crushed, ground, etc. for subsequent processing and use. Therefore, efficient and high-quality crushing and grinding equipment is crucial.

[0003] Chinese patent publication number CN109530023A discloses a graphite crushing and grinding device, comprising a crushing device and a grinding device; the crushing device is provided with a feed port, a fastener, a first motor, a pipe, a housing, a spherical screen, a connecting rod, a sphere, a spherical rod, a blade, a conveyor belt, a raw material storage box, a handle, and a turning point; the raw material of the present invention enters the crushing device through the feed port; the fastener is used to control the opening and closing of the feed port; and the pipe is a channel for the raw material to pass through.

[0004] The above-mentioned prior art solutions have the following defects: poor graphite crushing effect and incomplete grinding. Summary of the Invention

[0005] The purpose of the present invention is to address the shortcomings of the existing technology and provide a graphite crushing and grinding device for silicon carbide semiconductors. The graphite raw material is preliminarily crushed by setting a crushing column, and the graphite particles at the bottom of the cylinder are transported from bottom to top to between the turntable and the grinding plate for secondary grinding by setting a conveying component. The uninterrupted conveying prevents the graphite raw material from accumulating at the bottom of the cylinder, thereby improving the processing efficiency. By grinding the graphite during the rotation of the turntable, the quality and efficiency of the grinding are improved.

[0006] The technical solutions of the present invention are as follows:

[0007] A graphite crushing and grinding device for silicon carbide semiconductors comprises a cylinder, a plurality of legs are fixedly provided on the bottom of the cylinder, a feeding assembly is provided on the top of the cylinder, a crushing assembly is rotatably provided in the cylinder, a conveying assembly is rotatably provided on the outside of the crushing assembly, a rotating assembly is provided on the top of the conveying assembly, a grinding assembly is provided above the rotating assembly, a material receiving cover is fixedly provided on the outside of the cylinder, a linkage assembly is provided between the crushing assembly and the conveying assembly, the crushing assembly is used to put graphite into the cylinder, the linkage assembly is used to drive the crushing assembly and the conveying assembly to rotate in opposite directions, the crushing assembly is used to preliminarily crush the graphite during the rotation process, the conveying assembly is used to convey the graphite at the bottom of the cylinder from bottom to top, the grinding assembly is used to grind the crushed graphite with the cooperation of the rotating assembly, and the material receiving cover is used to collect graphite powder.

[0008] As a preference, the crushing assembly includes a fixed plate fixedly arranged on the support leg, a base fixedly arranged on the fixed plate, a motor fixedly arranged on the base, a first rotating shaft fixedly connected to the top of the motor output shaft, a crushing column fixedly arranged on the top of the first rotating shaft, and crushing teeth fixedly arranged on the outer wall of the crushing column, and the first rotating shaft is rotatably arranged at the bottom of the cylinder.

[0009] As a preference, the conveying assembly includes a second rotating shaft rotatably arranged at the bottom of the cylinder, a plurality of connecting rods fixedly arranged on the second rotating shaft, a rotating shaft fixedly arranged on the connecting rods, and a spiral blade fixedly arranged on the rotating shaft, the second rotating shaft is coaxial with the first rotating shaft, and the second rotating shaft is sleeved on the outside of the first rotating shaft, and the rotating shaft is coaxial with the second rotating shaft.

[0010] As a preferred embodiment, the rotating assembly includes a turntable fixedly arranged on the top of the rotating shaft, a feed port opened on the turntable, a limit plate fixedly arranged on the top of the turntable, and a plurality of discharge ports opened on the limit plate. The turntable is coaxial with the rotating shaft, and the bottom of the turntable is rotatably arranged at the top of the cylinder.

[0011] Preferably, the material discharge assembly includes a plurality of support rods fixedly arranged on the top of the material receiving cover, a top plate fixedly arranged on the support rods, and a material discharge channel fixedly arranged in the middle of the top plate, and the material discharge channel runs through the turntable.

[0012] Preferably, the grinding assembly includes a plurality of springs fixedly connected to the bottom of the top plate, a grinding plate fixedly arranged at the bottom of the spring, and a plurality of grinding protrusions fixedly arranged at the bottom of the grinding plate. The grinding plate is located in the limiting plate, and an opening is provided in the middle of the grinding plate. The diameter of the opening is larger than the outer diameter of the discharge channel.

[0013] Preferably, the linkage assembly includes a first gear fixedly arranged at the bottom of the first rotating shaft, a rotating rod rotatably arranged on the base, a second gear fixedly arranged on the rotating rod, a pulley a fixedly arranged on the second rotating shaft, a pulley b fixedly arranged at the top of the rotating rod, and a belt connected between pulley a and pulley b, and the first gear and the second gear are meshed.

[0014] As a preference, the diameter of the material receiving hood gradually decreases from top to bottom, and a discharge channel is provided at the bottom of the material receiving hood.

[0015] As a preference, a material feeding gap is formed between the outer side of the crushing column 35 and the inner side of the rotating shaft 43 .

[0016] As another preferred embodiment, the spiral blade located at the bottom of the rotating shaft cooperates with the bottom of the cylinder.

[0017] The present invention is provided with a crushing assembly. The graphite raw material enters the feeding gap. The crushing column is provided to crush the graphite during the rotation of the crushing column, so that large particles of graphite are broken into small particles of graphite, which is convenient for subsequent grinding.

[0018] The present invention is provided with a conveying component, and the crushed graphite falls into the bottom of the cylinder. The spiral blades are driven to rotate by the rotating shaft, so that the spiral blades drive the graphite at the bottom of the cylinder to be conveyed from bottom to top. By continuously conveying the graphite particles, the graphite particles will not accumulate at the bottom of the cylinder, thereby improving the overall processing efficiency.

[0019] The present invention is provided with a rotating component and a grinding component. By arranging a turntable and a feed port, graphite enters the turntable from the feed port. By arranging a grinding plate and a grinding protrusion, the graphite is ground into powder under the action of the grinding protrusion. During the rotation of the turntable, under the action of centrifugal force, the graphite particles gradually move away from the center of the turntable, so that the grinding path of the graphite particles becomes longer, the grinding quality is further improved, and the graphite crushing effect is better.

[0020] The present invention is also provided with a receiving cover. During the rotation of the turntable, the graphite powder gradually moves away from the center of the turntable under the action of centrifugal force and falls into the receiving cover from the discharge port for collection, thereby achieving the effect of separating the graphite raw material and the powder.

[0021] In summary, the present invention has the advantages of high grinding efficiency, good effect, etc., and is suitable for the technical field of graphite processing equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The present invention will be further described below with reference to the accompanying drawings:

[0023] Figure 1 This is a schematic structural diagram of the graphite crushing and grinding device for silicon carbide semiconductors;

[0024] Figure 2 It is a structural diagram of the conveying component and the linkage component;

[0025] Figure 3 It is a structural diagram of the crushing component;

[0026] Figure 4 Schematic diagram of the state of graphite particles during crushing and grinding;

[0027] Figure 5 This is a schematic diagram of the state when the crushing column and the rotating shaft rotate in opposite directions;

[0028] Figure 6 Schematic diagram of the internal state of the material receiving cover;

[0029] Figure markings: 1-cylinder; 11-support leg; 2-unloading assembly; 21-support rod; 22-top plate; 23-unloading channel; 3-crushing assembly; 31-fixed plate; 32-base; 33-motor; 34-first rotating shaft; 35-crushing column; 36-crushing teeth; 4-conveyor assembly; 41-second rotating shaft; 42-connecting rod; 43-rotating shaft; 44-spiral blade; 5-rotating assembly; 51-turntable; 52-feeding port; 53-limiting plate; 54-discharging port; 6-grinding assembly; 61-spring; 62-grinding plate; 63-grinding protrusion; 64-opening; 7-material receiving cover; 71-discharging channel; 8-linkage assembly; 81-first gear; 82-rotating rod; 83-second gear; 84-pulley a; 85-pulley b; 86-belt; 9-unloading gap. Implementation Method

[0030] The technical solutions in the embodiments of the present invention are clearly and completely described below with reference to the accompanying drawings. Example

[0031] The following describes embodiments of the present invention in detail, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and are not to be construed as limiting the present invention.

[0032] like Figures 1 to 6 As shown, a graphite crushing and grinding device for silicon carbide semiconductors includes a cylinder 1, a plurality of legs 11 are fixedly provided at the bottom of the cylinder 1, a feeding assembly 2 is provided at the top of the cylinder 1, a crushing assembly 3 is rotatably provided in the cylinder 1, a conveying assembly 4 is rotatably provided on the outside of the crushing assembly 3, a rotating assembly 5 is provided on the top of the conveying assembly 4, a grinding assembly 6 is provided above the rotating assembly 5, a material receiving cover 7 is fixedly provided on the outside of the cylinder 1, a linkage assembly 8 is provided between the crushing assembly 3 and the conveying assembly 4, the feeding assembly 2 is used to put graphite into the cylinder 1, the linkage assembly 8 is used to drive the crushing assembly 3 and the conveying assembly 4 to rotate in opposite directions, the crushing assembly 3 is used to preliminarily crush the graphite during the rotation process, the conveying assembly 4 is used to convey the graphite at the bottom of the cylinder 1 from bottom to top, the grinding assembly 6 is used to grind the crushed graphite with the cooperation of the rotating assembly 5, the material receiving cover 7 is used to collect the graphite powder, and the bottom surface inside the cylinder 1 is an inclined surface, and the preliminarily crushed graphite falls into the conveying assembly 4 from the inclined surface.

[0033] like Figure 2 and Figure 3As shown, the unloading assembly 2 includes a plurality of support rods 21 fixedly arranged on the top of the receiving cover 7, a top plate 22 fixedly arranged on the support rods 21, and a unloading channel 23 fixedly arranged in the middle of the top plate 22. The unloading channel 23 passes through the turntable 51. When in use, the staff puts the graphite raw material into the unloading channel 23, and the graphite raw material falls into the unloading gap 9, and the crushing column 35 crushes it.

[0034] like Figure 1 As shown, the crushing assembly 3 includes a fixed plate 31 fixedly arranged on the support leg 11, a base 32 fixedly arranged on the fixed plate 31, a motor 33 fixedly arranged on the base 32, a first rotating shaft 34 fixedly connected to the top of the output shaft of the motor 33, a crushing column 35 fixedly arranged on the top of the first rotating shaft 34, and crushing teeth 36 fixedly arranged on the outer wall of the crushing column 35. The first rotating shaft 34 is rotatably arranged at the bottom of the cylinder 1, and the top of the crushing column 35 is an inclined surface. The graphite raw material falls from the inclined surface into the gap between the crushing column 35 and the rotating shaft 43. When in use, the motor 33 is started to drive the first rotating shaft 34 and the crushing column 35 to rotate. During the rotation process, the crushing teeth 36 preliminarily crush the graphite raw material, which is convenient for subsequent grinding and improves work efficiency.

[0035] like Figure 2 and Figure 3 As shown, the conveying assembly 4 includes a second rotating shaft 41 rotatably arranged at the bottom of the cylinder 1, a plurality of connecting rods 42 fixedly arranged on the second rotating shaft 41, a rotating shaft 43 fixedly arranged on the connecting rod 42, and a spiral blade 44 fixedly arranged on the rotating shaft 43. The second rotating shaft 41 is coaxial with the first rotating shaft 34, and the second rotating shaft 41 is sleeved on the outside of the first rotating shaft 34. The rotating shaft 43 is coaxial with the second rotating shaft 41. When in use, by setting the linkage assembly 8, the second rotating shaft 41 is rotated to drive the rotating shaft 43 and the spiral blade 44 to rotate, so that the spiral blade 44 drives the graphite at the bottom of the cylinder 1 to be conveyed from bottom to top. By continuously conveying the graphite particles, the graphite particles will not accumulate at the bottom of the cylinder, thereby improving the overall processing efficiency.

[0036] like Figure 2 and Figure 3As shown, the rotating assembly 5 includes a turntable 51 fixedly arranged on the top of the rotating shaft 43, a feed port 52 opened on the turntable 51, a limit plate 53 fixedly arranged on the top of the turntable 51 and a plurality of discharge ports 54 opened on the limit plate 53. The turntable 51 is coaxial with the rotating shaft 43, and the bottom of the turntable 51 is rotatably arranged at the top of the cylinder 1. The feed port 52 is fitted with the spiral blade 44 at the top of the rotating shaft 43. The inner wall of the limit plate 53 is set to an arc structure to avoid interference between the grinding plate 62 and the inner wall of the limit plate 53 when the grinding plate 62 is tilted. When in use, the rotating shaft 43 drives the turntable 51 to rotate. Under the conveyance of the spiral blade 44, the spiral blade 44 located at the top of the rotating shaft 43 conveys the graphite particles to the feed port 52, and then the graphite particles enter the turntable 51 for subsequent grinding.

[0037] like Figure 2 and Figure 3 As shown, the grinding assembly 6 includes a plurality of springs 61 fixedly connected to the bottom of the top plate 22, a grinding plate 62 fixedly arranged at the bottom of the spring 61, and a plurality of grinding protrusions 63 fixedly arranged at the bottom of the grinding plate 62. The grinding plate 62 is located in the limiting plate 53. An opening 64 is provided in the middle of the grinding plate 62. The diameter of the opening 64 is larger than the outer diameter of the feeding channel 23. The outer side of the grinding plate 62 is set to an arc structure to avoid interference with the inner wall of the limiting plate 53 when the grinding plate 62 is tilted. When in use, by setting the grinding plate 62 and the grinding protrusion 63, the graphite is ground into powder under the action of the grinding protrusion 63. Finally, during the rotation of the turntable 51, under the action of centrifugal force, the graphite particles gradually move away from the center of the turntable 51, so the grinding path of the graphite particles becomes longer, further improving the quality of grinding and making the graphite crushing effect better. In addition, by setting the spring 61, when there are more graphite particles on the turntable 51, the grinding plate 62 can be tilted to avoid the problem that the grinding protrusion 63 cannot be ground, and it can play a role of crushing, further improving the grinding efficiency. By setting the diameter of the opening 64 to be larger than the outer diameter of the discharge channel 23, it is to avoid the interference of the grinding plate 62 with the discharge channel 23 when tilted.

[0038] like Figure 2As shown, the linkage assembly 8 includes a first gear 81 fixedly arranged at the bottom of the first rotating shaft 34, a rotating rod 82 rotatably arranged on the base 32, a second gear 83 fixedly arranged on the rotating rod 82, a pulley a84 fixedly arranged on the second rotating shaft 41, a pulley b85 fixedly arranged on the top of the rotating rod 82, and a belt 86 connected between the pulley a84 and the pulley b85. The first gear 81 and the second gear 83 are meshed. In use, when the first rotating shaft 34 rotates forward, it drives the first gear 81 to rotate forward. Under the meshing of the first gear 81 and the second gear 83, the second gear 83 is reversed, thereby driving the rotating rod 82 and the pulley b85 to reverse. Under the transmission of the belt 86, the pulley a84 is reversed, thereby driving the second rotating shaft 41 to reverse, so that the rotation directions of the rotating shaft 43 and the crushing column 35 are opposite, so that the crushing effect of the crushing column 35 is better and the crushing speed is accelerated.

[0039] like Figure 4 As shown, the diameter of the receiving cover 7 gradually decreases from top to bottom. During the rotation of the turntable 51, the graphite powder gradually moves away from the center of the turntable 51 under the action of centrifugal force, and falls into the receiving cover 7 from the discharge port 54 for collection, thereby achieving the effect of separating the graphite raw material and the powder.

[0040] like Figure 3 As shown, a material discharge gap 9 is formed between the outer side of the crushing column 35 and the inner side of the rotating shaft 43 .

[0041] like Figure 4 As shown, the spiral blade 44 located at the bottom of the rotating shaft 43 cooperates with the bottom of the cylinder 1. The spiral blade 44 drives the graphite at the bottom of the cylinder 1 to be transported from bottom to top. By continuously transporting the graphite particles, the graphite particles will not accumulate at the bottom of the cylinder 1, thereby improving the overall processing efficiency. Example

[0042] like Figure 2 and Figure 6 As shown, the components that are the same as or corresponding to those in Example 1 are marked with the corresponding reference numerals in Example 1. For simplicity, only the differences from Example 1 are described below. The difference between Example 2 and Example 1 is that a discharge channel 71 is provided at the bottom of the material receiving cover 7.

[0043] Here, in this embodiment, the bottom surface inside the material receiving cover 7 is set as an inclined surface, and the lowest point of the inclined surface is located above the discharge channel 71, so that the powder can fall into the discharge channel 71 in a concentrated manner.

[0044] First, the staff puts the graphite raw material into the discharge channel 23, and the graphite raw material falls into the discharge gap 9. The motor 33 drives the first rotating shaft 34 and the crushing column 35 to rotate. During the rotation of the crushing column 35, the graphite raw material is preliminarily crushed. By setting the linkage component 8, the second rotating shaft 41 rotates to drive the rotating shaft 43 and the spiral blade 44 to rotate, so that the spiral blade 44 drives the graphite at the bottom of the cylinder 1 to be transported from bottom to top. Under the transportation of the spiral blade 44, the graphite particles enter the turntable from the feed port 52. By setting the grinding plate 62 and the grinding protrusion 63, the graphite is ground into powder under the action of the grinding protrusion 63. During the rotation of the turntable 51, under the action of centrifugal force, the graphite particles gradually move away from the center of the turntable 51, so that the grinding path of the graphite particles becomes longer, further improving the grinding quality. At the same time, under the action of centrifugal force, the graphite powder gradually moves away from the center of the turntable 51 and falls into the material receiving cover 7 from the discharge port 54 for collection.

[0045] In the description of the present invention, it should be understood that the terms "front and back", "left and right", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the equipment or components referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the invention.

[0046] Of course, in this technical solution, those skilled in the art should understand that the term "one" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element may be one, while in another embodiment, the number of the element may be multiple, and the term "one" should not be understood as a limitation on the quantity.

[0047] The above description in conjunction with the accompanying drawings is only a preferred embodiment of the present invention, but the present invention is not limited to the above embodiment. It should be pointed out that for those skilled in the art, various modifications and improvements can be made without departing from the structure of the present invention. These should also be regarded as the scope of protection of the present invention and will not affect the effect and practicality of the implementation of the present invention.

Claims

1. A graphite crushing and grinding device for silicon carbide semiconductors, comprising a cylinder (1), characterized in that: A plurality of legs (11) are fixedly provided at the bottom of the cylinder (1), a material discharge assembly (2) is provided at the top of the cylinder (1), a crushing assembly (3) is rotatably provided in the cylinder (1), a conveying assembly (4) is rotatably provided outside the crushing assembly (3), a rotating assembly (5) is provided on the top of the conveying assembly (4), a grinding assembly (6) is provided above the rotating assembly (5), a material receiving cover (7) is fixedly provided on the outside of the cylinder (1), and a material receiving cover (7) is provided between the crushing assembly (3) and the conveying assembly (4). A linkage assembly (8), wherein the feeding assembly (2) is used to place graphite into the cylinder (1), the linkage assembly (8) is used to drive the crushing assembly (3) and the conveying assembly (4) to rotate in opposite directions, the crushing assembly (3) is used to preliminarily crush the graphite during the rotation process, the conveying assembly (4) is used to convey the graphite at the bottom of the cylinder (1) from bottom to top, the grinding assembly (6) is used to grind the crushed graphite in cooperation with the rotating assembly (5), and the receiving cover (7) is used to collect graphite powder; The crushing assembly (3) includes a fixing plate (31) fixedly arranged on the support leg (11), a base (32) fixedly arranged on the fixing plate (31), a motor (33) fixedly arranged on the base (32), a first rotating shaft (34) fixedly connected to the top of the output shaft of the motor (33), a crushing column (35) fixedly arranged on the top of the first rotating shaft (34), and crushing teeth (36) fixedly arranged on the outer wall of the crushing column (35), wherein the first rotating shaft (34) is rotatably arranged at the bottom of the cylinder (1); The conveying assembly (4) includes a second rotating shaft (41) rotatably arranged at the bottom of the cylinder (1), a plurality of connecting rods (42) fixedly arranged on the second rotating shaft (41), a rotating shaft (43) fixedly arranged on the connecting rods (42), and a spiral blade (44) fixedly arranged on the rotating shaft (43), wherein the second rotating shaft (41) is coaxial with the first rotating shaft (34), and the second rotating shaft (41) is sleeved on the outside of the first rotating shaft (34), and the rotating shaft (43) is coaxial with the second rotating shaft (41); The rotating assembly (5) includes a turntable (51) fixedly arranged on the top of the rotating shaft (43), a feeding port (52) opened on the turntable (51), a limiting plate (53) fixedly arranged on the top of the turntable (51), and a plurality of discharge ports (54) opened on the limiting plate (53), the turntable (51) and the rotating shaft (43) are coaxial, and the bottom of the turntable (51) is rotatably arranged on the top of the cylinder (1); The material discharge assembly (2) comprises a plurality of support rods (21) fixedly arranged on the top of the receiving cover (7), a top plate (22) fixedly arranged on the support rods (21), and a material discharge channel (23) fixedly arranged in the middle of the top plate (22), wherein the material discharge channel (23) passes through the turntable (51); The grinding assembly (6) includes a plurality of springs (61) fixedly connected to the bottom of the top plate (22), a grinding plate (62) fixedly arranged at the bottom of the spring (61), and a plurality of grinding protrusions (63) fixedly arranged at the bottom of the grinding plate (62). The grinding plate (62) is located in the limiting plate (53). An opening (64) is provided in the middle of the grinding plate (62). The diameter of the opening (64) is larger than the outer diameter of the discharge channel (23).

2. The graphite grinding and polishing device for silicon carbide semiconductor according to claim 1, characterized in that: The linkage assembly (8) includes a first gear (81) fixedly arranged at the bottom of the first rotating shaft (34), a rotating rod (82) rotatably arranged on the base (32), a second gear (83) fixedly arranged on the rotating rod (82), a pulley a (84) fixedly arranged on the second rotating shaft (41), a pulley b (85) fixedly arranged at the top of the rotating rod (82), and a belt (86) connected between the pulley a (84) and the pulley b (85), and the first gear (81) and the second gear (83) are meshed.

3. The graphite grinding and polishing device for silicon carbide semiconductor according to claim 1, characterized in that: The diameter of the material receiving hood (7) gradually decreases from top to bottom, and a material discharge channel (71) is provided at the bottom of the material receiving hood (7).

4. The graphite grinding and polishing device for silicon carbide semiconductor according to claim 1, characterized in that: A material discharge gap (9) is formed between the outer side of the crushing column (35) and the inner side of the rotating shaft (43).

5. The graphite grinding and polishing device for silicon carbide semiconductor according to claim 1, characterized in that: The spiral blade (44) located at the bottom of the rotating shaft (43) cooperates with the bottom of the cylinder (1).

Images