A multi-stage screening device for graphite product raw materials

Abstract

This utility model provides a multi-stage screening device for graphite product raw materials, belonging to the technical field of screening devices. It includes a screening box, and further comprises: a sealed guide rail fixedly connected to the inner wall of the screening box, with a filter plate slidably connected to the inner wall of the sealed guide rail; an extension frame fixedly connected to the side wall of the screening box; a drive motor A fixedly connected to the side wall of the screening box, with a drive gear fixedly connected to the output end of the drive motor A; baffles fixedly connected to the inner wall of the screening box, with two to six sets of baffles arranged alternately; and a screening port A opened on the side wall of the screening box. In this utility model, the sliding connection between the sealed guide rail and the filter plate in the vibration guiding component, and the elastic deformation release of the strong springs A and B in the adaptive component to limit the filter plate, allow for easy opening and replacement of filter plates of different specifications during installation. This adapts to the screening needs of graphite products with different particle size requirements, expanding the applicability of the device.

Description

Technical Field

[0001] This utility model relates to the field of screening device technology, and more specifically, to a multi-stage screening device for graphite product raw materials. Background Technology

[0002] Graphite raw materials are the foundation for producing various graphite products such as graphite electrodes, graphite heat sinks, and graphite seals. Their core component is graphite particles, and natural or processed graphite raw materials often contain particles of different sizes, impurities, and sticky substances, making them unsuitable for direct production. During graphite product manufacturing, different products have significantly different requirements for raw material particle size. For example, high-precision graphite molds require micron-sized fine particles to ensure molding accuracy, while graphite electrodes require particles within a specific size range to balance conductivity and structural strength. Therefore, graphite raw materials must be graded using a screening device to select particles that meet production specifications and remove impurities and substandard particles. This is a crucial step in ensuring stable performance of graphite products and reducing production scrap rates.

[0003] A search revealed Chinese patent application CN202222833319.5, which discloses a multi-stage screening device for graphite product raw materials. The device includes a vibrating body, a screening box located above the vibrating body, several springs arranged side-by-side between the bottom surface of the screening box and the vibrating body, a conical screening screen plate fixedly connected inside the screening box, and a flow distribution surface formed by the inclined upper surface of the conical screening screen plate. The upper end of the screening box has an opening and a cover is fastened to it. A feed cylinder is fixedly mounted on the cover, located directly above the conical screening screen plate. A rotating cylinder is coaxially rotatably mounted on the outer wall of the feed cylinder. Several cleaning pipes are arranged around the peripheral wall of the rotating cylinder within the cover, and several air nozzles are fixedly connected to the lower peripheral wall of the cleaning pipes. While the aforementioned patent allows for the installation of a screening box on a vibrating body, which vibrates the screening box, and a feed cylinder guides graphite powder onto a conical screening screen, where the inclined upper surface of the conical screen disperses the graphite powder, and the vibration of the vibrating body enables the graphite powder to quickly pass through the conical screen and fall onto a guide plate for discharge through a discharge cylinder, the following shortcomings still exist in practical use: 1. The filter structure is fixedly connected to the main body of the equipment. When screening graphite raw materials of different particle sizes, replacing the filter components requires disassembling a large number of connecting parts, which is cumbersome and time-consuming. This results in a limited range of applications for the equipment, making it difficult to flexibly adapt to diverse production needs. Furthermore, the screening process relies on overall vibration, with high-frequency vibration directly acting on the entire screening box and main body of the device. Long-term use can easily cause damage such as cracks at the welded joints of the box and deformation of the supporting structure, shortening the equipment's lifespan and increasing enterprise maintenance costs and downtime losses. Secondly, after entering the device, the graphite raw material falls rapidly, resulting in a short contact time with the filter structure. Large particles or sticky materials, in particular, are prone to carrying away fine, qualified particles during the fall, leading to insufficient separation of fine materials and mis-discharge. This severely affects the screening accuracy and makes it difficult to meet the production requirements of high-precision graphite products.

[0004] Therefore, there is an urgent need for a multi-stage screening device for graphite product raw materials to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide a multi-stage screening device for graphite product raw materials to solve the problems mentioned in the background art.

[0006] To achieve the above-mentioned objectives, this utility model provides the following technical solution: A multi-stage screening device for graphite product raw materials includes a screening box and further includes: A sealed guide rail is fixedly connected to the inner wall of the screening box, and a filter plate is slidably connected to the inner wall of the sealed guide rail; The extension frame is fixedly connected to the side wall of the screening box; A drive motor A is fixedly connected to the side wall of the screening box, and a drive gear is fixedly connected to the output end of the drive motor A; Baffles are fixedly connected to the inner wall of the screening box, and two to six sets of baffles are provided, with the baffles being staggered. Screening port A is located on the side wall of the screening box; Screening port B is located on the side wall of the screening box, and the screening port B is located below the screening port A; The feed hopper is fixedly connected to the top of the screening box; The air inlet pipe is fixedly connected to the top of the screening box; Vibration guiding assembly, including: A linkage rod is rotatably connected to the side wall of the screening box, and a turntable is fixedly connected to both ends of the linkage rod. A driven gear that meshes with the drive gear is fixedly connected to the outer wall of the linkage rod. A linkage plate is rotatably connected to the side wall of the turntable, and a push plate is rotatably connected to the end of the linkage plate away from the turntable. The push plate is slidably connected to the sealing guide rail, and the side wall of the push plate abuts against the side wall of the filter plate. An adaptive component is disposed on the top of the extension frame, and the adaptive component cooperates with the vibration guiding component.

[0007] As a preferred technical solution of this application, the adaptive component includes: A sliding groove is provided at the top of the extension frame and is symmetrically distributed about the extension frame. A slider is slidably connected to the inner wall of the sliding groove. A limiting frame is fixedly connected to the top of the slider, and a top plate is slidably connected to the inner wall of the limiting frame, with the side wall of the top plate abutting against the side wall of the filter plate; A strong spring A is fixedly connected between the top plate and the filter plate; A strong spring B is fixedly connected between the slider and the groove.

[0008] As a preferred technical solution of this application, a cleaning pipe is fixedly connected to the inner wall of the screening box, a uniformly distributed air nozzle is fixedly connected to the bottom of the cleaning pipe, and a connecting pipe is fixedly connected to the side wall of the cleaning pipe.

[0009] As a preferred technical solution of this application, a drive motor B is fixedly connected to the side wall of the screening box, a drive rod is fixedly connected to the output end of the drive motor B, a rotating cylinder is fixedly connected to the end of the drive rod away from the output end of the drive motor B, and a uniformly distributed through hole is opened on the outer wall of the rotating cylinder, and the through hole is connected to a connecting pipe and an air inlet pipe.

[0010] As a preferred technical solution of this application, the bottom of the screening box is fixedly connected with support columns symmetrically distributed about the screening box, and the bottom of the support columns is fixedly connected with support plates.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows: In the scheme of this application: 1. By sliding the sealed guide rail and filter plate in the vibration guide assembly, and by releasing the limit on the filter plate through the elastic deformation of the strong springs A and B in the adaptive assembly, the filter plates of different specifications can be easily opened and replaced during installation. This allows the device to be adapted to the screening requirements of graphite products with different particle size requirements, thus expanding the applicability of the device. At the same time, during the vibration screening process, the reciprocating motion only acts on the filter plate, not the entire screening box or the main body of the device, avoiding structural damage or breakage caused by high-frequency vibration of the entire equipment. This effectively extends the overall service life of the equipment and solves the problems of the existing technology where the filter structure is fixed to the main body, replacement is cumbersome, the applicable range is narrow, the overall vibration screening equipment is easily damaged, the lifespan is shortened, and the maintenance and downtime costs are increased. 2. The staggered baffles extend the movement path of the graphite raw material in the screening box, allowing the raw material more time to contact the filter plate for screening. This prevents large particles or sticky graphite raw materials from being mistakenly discharged directly from the screen opening A due to a short movement path, ensuring that the fine raw materials that can pass through the filter plate are fully separated. This significantly improves the screening accuracy and solves the problems of rapid raw material fall, short filter plate contact, mis-discharge of large particles or sticky raw materials carrying fine materials, low screening accuracy, and difficulty in adapting to high-precision production in the existing technology. Attached Figure Description

[0012] Figure 1 One of the overall structural schematic diagrams of the multi-stage screening device for graphite product raw materials provided in this application; Figure 2 The second schematic diagram of the overall structure of the multi-stage screening device for graphite product raw materials provided in this application; Figure 3 A front view of the multi-stage screening device for graphite product raw materials provided in this application; Figure 4 A schematic diagram of the pusher plate section of the multi-stage screening device for graphite product raw materials provided in this application; Figure 5 A schematic diagram of the baffle section of the multi-stage screening device for graphite product raw materials provided in this application.

[0013] The image shows: 1. Screening box; 2. Support column; 3. Support plate; 4. Sealed guide rail; 5. Filter plate; 6. Extension frame; 7. Slide rail; 8. Sliding block; 9. Limiting frame; 10. Top plate; 11. Strong spring A; 12. Linkage rod; 13. Turntable; 14. Linkage plate; 15. Push plate; 16. Driven gear; 17. Drive motor A; 18. Drive gear; 19. Baffle; 20. Screening port A; 21. Screening port B; 22. Feed hopper; 23. Cleaning pipe; 24. Air nozzle; 25. Connecting pipe; 26. Air inlet pipe; 27. Drive motor B; 28. Drive rod; 29. ​​Rotating cylinder; 30. Through hole; 31. Strong spring B. Detailed Implementation

[0014] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model.

[0015] like Figure 1-5 As shown, the multi-stage screening device for graphite product raw materials proposed in this embodiment includes a screening box 1, and further includes: The sealed guide rail 4 is fixedly connected to the inner wall of the screening box 1, and the filter plate 5 is slidably connected to the inner wall of the sealed guide rail 4. Extension frame 6 is fixedly connected to the side wall of screening box 1; The drive motor A17 is fixedly connected to the side wall of the screening box 1, and the output end of the drive motor A17 is fixedly connected to the drive gear 18. Baffles 19 are fixedly connected to the inner wall of the screening box 1, and there are two to six sets of baffles 19, which are staggered. Screening port A20 is located on the side wall of screening box 1; Screening port B21 is located on the side wall of screening box 1, and screening port B21 is located below screening port A20. The feed hopper 22 is fixedly connected to the top of the screening box 1. After being screened by the filter plate 5, the graphite raw material with smaller particle size that can pass through the filter plate 5 falls downward and is finally discharged through the screen opening B21 located on the side wall of the screening box 1 and at the bottom. The raw material with larger particle size that cannot pass through the filter plate 5 is intercepted above the filter plate 5 and moves to one side with the reciprocating motion of the filter plate 5. It is discharged through the screen opening A20 located on the side wall of the screening box 1 and at the top, thus realizing the multi-stage classification of the raw material. The air inlet pipe 26 is fixedly connected to the top of the screening box 1; Vibration guiding assembly, including: Linkage rod 12 is rotatably connected to the side wall of screening box 1, and turntable 13 is fixedly connected to both ends of linkage rod 12. Driven gear 16 that meshes with drive gear 18 is fixedly connected to the outer wall of linkage rod 12. The linkage plate 14 is rotatably connected to the side wall of the turntable 13, and a push plate 15 is rotatably connected to the end of the linkage plate 14 away from the turntable 13. The push plate 15 is slidably connected to the sealing guide rail 4, and the side wall of the push plate 15 abuts against the side wall of the filter plate 5. The graphite product raw material enters the device through the feed funnel 22 fixed to the top of the screening box 1. The drive motor A17 fixed to the side wall of the screening box 1 is started. The output end of the drive motor A17 drives the drive gear 18 to rotate. Since the drive gear 18 meshes with the driven gear 16 on the outer wall of the linkage rod 12, the driven gear 16 rotates with the drive gear 18 and drives the linkage rod 12 to rotate synchronously. The two ends of the linkage rod 12 The fixed turntable 13 also rotates together. When the turntable 13 rotates, the linkage plate 14 rotatably connected to its side wall is driven to make a pushing and pulling motion. The end of the linkage plate 14 away from the turntable 13 is rotatably connected to the push plate 15. Therefore, the push plate 15 slides back and forth along the sealed guide rail 4 under the action of the linkage plate 14. Since the side wall of the push plate 15 abuts against the side wall of the filter plate 5, and the filter plate 5 is subjected to the elastic action of the strong spring A11 and the squeezing action of the top plate 10, the back and forth sliding of the push plate 15, together with the top plate 10 and the strong spring A11, realizes the synchronous back and forth movement of the filter plate 5 along the sealed guide rail 4, and performs vibration screening on the raw materials dispersed by the baffle 19. An adaptive component is located on top of the extension frame 6, and the adaptive component cooperates with the vibration guiding component.

[0016] like Figure 1-4 As shown, in a preferred embodiment, based on the above method, the adaptive component further includes: The slide 7 is located at the top of the extension frame 6 and is symmetrically distributed about the extension frame 6. The inner wall of the slide 7 is slidably connected to the slider 8. The limiting frame 9 is fixedly connected to the top of the slider 8, and the inner wall of the limiting frame 9 is slidably connected to the top plate 10, and the side wall of the top plate 10 abuts against the side wall of the filter plate 5. A strong spring A11 is fixedly connected between the top plate 10 and the filter plate 5; A strong spring B31 is fixedly connected between the slider 8 and the slide groove 7. If it needs to be disassembled or installed, the limiting frame 9 can be pushed to slide through the slider 8 in the slide groove 7. At this time, the filter plate 5 loses the limiting and squeezing effect of the limiting frame 9 and the top plate 10, so the filter plate 5 can be disassembled to adapt to the corresponding graphite products for screening.

[0017] like Figure 3 As shown, in a preferred embodiment, based on the above method, a cleaning pipe 23 is fixedly connected to the inner wall of the screening box 1, and a uniformly distributed air nozzle 24 is fixedly connected to the bottom of the cleaning pipe 23. A connecting pipe 25 is fixedly connected to the side wall of the cleaning pipe 23. The gas enters the cleaning pipe 23 through the through hole 30 and the connecting pipe 25 in sequence, and finally is evenly distributed to the air nozzle 24 through the cleaning pipe 23 and sprayed out.

[0018] like Figure 5 As shown, in a preferred embodiment, based on the above method, a drive motor B27 is further fixedly connected to the side wall of the screening box 1. A drive rod 28 is fixedly connected to the output end of the drive motor B27. A rotating cylinder 29 is fixedly connected to the end of the drive rod 28 away from the output end of the drive motor B27. The outer wall of the rotating cylinder 29 has evenly distributed through holes 30, which are connected to the connecting pipe 25 and the air inlet pipe 26. When the filter plate 5 becomes clogged, air is introduced through the air inlet pipe 26 fixed to the top of the screening box 1. Simultaneously, the drive motor B27 on the side wall of the screening box 1 is started. The output end of the drive motor B27 drives the drive rod 28 to rotate, and the rotating cylinder 29 fixed at the other end of the drive rod 28 rotates accordingly. The evenly distributed through holes 30 on the outer wall of the rotating cylinder 29 are intermittently connected to the air inlet pipe 26 and the connecting pipe 25 as the rotation progresses. The gas passes through the through holes 30 and the connecting pipe 25 in sequence and enters the cleaning pipe 23. Finally, it is pulsed out through the evenly distributed jet nozzles 24 fixed at the bottom of the cleaning pipe 23 to clean the surface of the filter plate 5 and the mesh, thus solving the clogging problem.

[0019] like Figure 1 As shown, in a preferred embodiment, based on the above method, further, the bottom of the screening box 1 is fixedly connected to support columns 2 that are symmetrically distributed about the screening box 1, and the bottom of the support columns 2 is fixedly connected to support plates 3. The symmetrically distributed support columns 2 and the support plates 3 fixed to the bottom of the support columns 2 provide stable support for the entire device and prevent the device from tilting or shaking during operation.

[0020] Specifically, in use, the graphite product raw material multi-stage screening device works as follows: the graphite product raw material enters the device through the feed funnel 22 fixed to the top of the screening box 1. The drive motor A17 fixed to the side wall of the screening box 1 is started. The output end of the drive motor A17 drives the drive gear 18 to rotate. Since the drive gear 18 meshes with the driven gear 16 on the outer wall of the linkage rod 12, the driven gear 16 rotates with the drive gear 18 and drives the linkage rod 12 to rotate synchronously. The turntable 13 fixed at both ends of the linkage rod 12 also rotates together. When the turntable 13 rotates, the linkage plate 14 rotatably connected to its side wall is driven to perform a push-pull motion. The end of the linkage plate 14 away from the turntable 13 is rotatably connected to the push plate 15. Therefore, the push plate 15 slides back and forth along the sealed guide rail 4 under the action of the linkage plate 14. Also, because the side wall of the push plate 15 abuts against the side wall of the filter plate 5, and the filter plate 5 is subjected to the elastic force of the strong spring A11. Due to the squeezing action of the top plate 10, the reciprocating sliding of the push plate 15, in conjunction with the top plate 10 and the strong spring A11, enables the filter plate 5 to reciprocate synchronously along the sealed guide rail 4, thus vibrating and screening the raw materials dispersed by the baffle 19. If disassembly or installation is required, the limit frame 9 can be pushed to slide in the slide groove 7 via the slider 8. At this time, the filter plate 5 loses the limiting squeezing action of the limit frame 9 and the top plate 10, thereby allowing the filter plate 5 to be disassembled to fit the corresponding graphite products for screening. After screening by the filter plate 5, the graphite raw materials with smaller particle sizes that can pass through the filter plate 5 fall downwards and are finally discharged through the screening port B21 located on the side wall of the screening box 1 at the bottom. The raw materials with larger particle sizes that cannot pass through the filter plate 5 are intercepted above the filter plate 5 and move to one side with the reciprocating motion of the filter plate 5, and are discharged through the screening port A20 located on the side wall of the screening box 1 at the top, thus achieving multi-stage grading of the raw materials.

Claims

1. A multi-stage screening device for raw material of graphite products, comprising a screening box (1), characterized in that, Also includes: A sealed guide rail (4) is fixedly connected to the inner wall of the screening box (1), and a filter plate (5) is slidably connected to the inner wall of the sealed guide rail (4). The extension frame (6) is fixedly connected to the side wall of the screening box (1); A drive motor A (17) is fixedly connected to the side wall of the screening box (1), and a drive gear (18) is fixedly connected to the output end of the drive motor A (17). Baffles (19) are fixedly connected to the inner wall of the screening box (1), and there are two to six sets of baffles (19), which are staggered. Screening port A (20) is located on the side wall of screening box (1); Screening port B (21) is opened on the side wall of screening box (1), and the screening port B (21) is located below screening port A (20); Feed hopper (22) is fixedly connected to the top of screening box (1); The air inlet pipe (26) is fixedly connected to the top of the screening box (1); Vibration guiding assembly, including: Linkage rod (12) is rotatably connected to the side wall of screening box (1), and turntable (13) is fixedly connected to both ends of linkage rod (12). Driven gear (16) meshing with drive gear (18) is fixedly connected to the outer wall of linkage rod (12). The linkage plate (14) is rotatably connected to the side wall of the turntable (13), and the end of the linkage plate (14) away from the turntable (13) is rotatably connected to the push plate (15). The push plate (15) is slidably connected to the sealing guide rail (4), and the side wall of the push plate (15) abuts against the side wall of the filter plate (5). An adaptive component is disposed on the top of the extension frame (6), and the adaptive component cooperates with the vibration guiding component.

2. The multi-stage screening device for graphite product raw materials according to claim 1, characterized in that, The adaptive component includes: A slide groove (7) is provided on the top of the extension frame (6) and is symmetrically distributed about the extension frame (6). A slider (8) is slidably connected to the inner wall of the slide groove (7). The limiting frame (9) is fixedly connected to the top of the slider (8), and the inner wall of the limiting frame (9) is slidably connected to the top plate (10), and the side wall of the top plate (10) abuts against the side wall of the filter plate (5); A strong spring A (11) is fixedly connected between the top plate (10) and the filter plate (5); A strong spring B (31) is fixedly connected between the slider (8) and the groove (7).

3. The multi-stage screening device for graphite product raw materials according to claim 1, characterized in that, The inner wall of the screening box (1) is fixedly connected to a cleaning pipe (23), the bottom of the cleaning pipe (23) is fixedly connected to a uniformly distributed air nozzle (24), and the side wall of the cleaning pipe (23) is fixedly connected to a connecting pipe (25).

4. The multi-stage screening device for graphite product raw materials according to claim 1, characterized in that, The screening box (1) is fixedly connected to a drive motor B (27) on its side wall. The output end of the drive motor B (27) is fixedly connected to a drive rod (28). The end of the drive rod (28) away from the output end of the drive motor B (27) is fixedly connected to a rotating cylinder (29). The outer wall of the rotating cylinder (29) is provided with evenly distributed through holes (30), and the through holes (30) are connected to the connecting pipe (25) and the air inlet pipe (26).

5. The multi-stage screening device for graphite product raw materials according to claim 1, characterized in that, The bottom of the screening box (1) is fixedly connected to support columns (2) that are symmetrically distributed about the screening box (1), and the bottom of the support columns (2) is fixedly connected to support plates (3).

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