A multi-stage screening device for lithium battery negative electrode materials

Abstract

The utility model discloses a kind of multistage screening devices of lithium battery negative electrode material, belong to lithium battery production technical field, its technical key points include vibrating screen subassembly, screening subassembly, cleaning subassembly and limiting component.The utility model, when screening negative electrode material used in lithium battery production, can be driven screening subassembly by first starting vibrating screen subassembly, and negative electrode material is put into screening subassembly, by the start of vibrating screen subassembly, screening subassembly can be driven to vibrate, so that negative electrode material can be screened, by multiple screening plate, negative electrode material can be multistage screened, so that different specification size negative electrode material can be screened out, and after long time screening, if screening plate is blocked, cleaning subassembly can be set on vibrating screen subassembly at this time, and limiting by limiting component, the bottom of screening plate can be blown by cleaning subassembly, so that blocked negative electrode material can be blown out, and then eliminate blockage.

Description

Technical Field

[0001] This utility model belongs to the field of lithium battery production technology, specifically relating to a multi-stage screening device for lithium battery anode materials. Background Technology

[0002] The physical properties of lithium battery anode materials (such as natural graphite, artificial graphite, silicon-carbon composites, etc.) directly affect battery performance: 1. Particle size uniformity affects lithium-ion insertion / extraction efficiency, and the accuracy needs to be controlled (usually ±5μm) to improve battery energy density and cycle life; 2. Ferromagnetic impurities (>10ppm) can cause short circuits in the battery, reducing cycle life (for every 1ppm increase, the cycle life of NCM batteries decreases by 15 cycles); 3. The expansion rate of silicon-based anodes is as high as 300%, and the sieving process needs to be designed with low breakage to avoid particle breakage affecting compaction density.

[0003] In the existing technology, the screening device for lithium battery anode materials has the following problems: 1. A single-layer screen cannot classify materials of different particle sizes, resulting in fine particles being repeatedly screened or coarse particles being mixed into the finished product; 2. After a long period of screening, the screen mesh may become blocked, which will affect the subsequent screening efficiency. To address these issues, we propose a multi-stage screening device for lithium battery anode materials. Utility Model Content

[0004] The purpose of this invention is to provide a multi-stage screening device for lithium battery anode materials to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A multi-stage screening device for lithium battery anode materials includes a vibrating screen assembly, on which a screening component and a cleaning component are provided, and a limit component is provided on the cleaning component.

[0007] The vibrating screen assembly includes a vibrating screen body, a vibrating element is provided on the vibrating screen body, a connecting member is provided on the vibrating element, a vibrating rod is provided inside the connecting member, and two limiting members are provided on the vibrating rod;

[0008] The screening component includes screening plates, and multiple screening plates are provided. All screening plates are set on the vibrating screen body. The multiple screening plates are arranged in an upper and lower structure, and the diameter of the screening holes of the multiple screening plates decreases from top to bottom. Multiple A guide plates are provided on the vibrating screen body, and the multiple A guide plates are respectively connected to the screening plates, and the connection is smooth.

[0009] Preferably, the vibrating screen assembly further includes a support frame, the vibrating screen body is disposed on the support frame, a funnel is disposed on the support frame, the funnel is disposed directly below the vibrating screen body, and both limiting members are disposed on the support frame.

[0010] Preferably, a motor is mounted on the support frame, a speed reducer is mounted on the motor, and the vibrating rod is mounted on the speed reducer.

[0011] Preferably, the screening component further includes two columns, both of which are mounted on the vibrating screen body, and a guide plate B is provided between the two columns.

[0012] Preferably, the cleaning assembly includes an insertion plate, an insertion slot is provided at the lower end of the vibrating screen body, the insertion plate is disposed inside the insertion slot and below multiple screening plates, and multiple fans are provided on the insertion plate.

[0013] Preferably, the cleaning assembly further includes a fixing plate, which is disposed on the vibrating screen body. The fixing plate is provided with a screw, a ratchet is provided on the screw, and ratchet teeth are provided on the fixing plate, which engage with the ratchet.

[0014] Preferably, the fixing plate is provided with a mounting plate, the mounting plate is provided with an A electrically controlled telescopic rod, the telescopic end of the A electrically controlled telescopic rod is provided with a deflector, the deflector is connected to a ratchet, and the insertion plate is threadedly connected to a screw.

[0015] Preferably, the limiting component includes an extension plate, which is disposed on the vibrating screen body. An entry groove is provided on the extension plate, and a sliding groove is provided on the insertion plate. An abutment is disposed in the sliding groove, and a lifting member is disposed on the abutment. The lifting member slides through the surface of the insertion plate, and a B electrically controlled telescopic rod is disposed on the insertion plate. The telescopic end of the B electrically controlled telescopic rod is connected to the lifting member.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] When screening negative electrode materials, the vibrating screen assembly can be run first, and then the negative electrode materials can be put into the screening assembly. At this time, the vibrating screen assembly can drive the screening assembly to vibrate, thereby speeding up the screening process. Since multiple screening plates are set up, and the screening holes of the multiple screening plates decrease in size from top to bottom, negative electrode materials of different sizes and specifications can be screened simultaneously, thereby improving screening efficiency. After screening, when the screening plates are clogged, the cleaning assembly can blow air in reverse to the screening plates, thereby blowing out the clogged negative electrode materials and clearing the screening plates. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0019] Figure 2 This is a cross-sectional view of the present invention;

[0020] Figure 3 This is a first partial exploded view of the present invention;

[0021] Figure 4 This is a second partial exploded view of the present invention;

[0022] Figure 5 This utility model Figure 4 A magnified view of a section at point A in the middle;

[0023] Figure 6 This utility model Figure 4 A magnified view of a section at point C;

[0024] Figure 7 This is a third partially exploded view of the present invention;

[0025] Figure 8 This utility model Figure 7 A magnified view of a section at point B.

[0026] In the diagram: 1. Vibrating screen assembly; 11. Support frame; 12. Funnel; 13. Vibrating screen body; 14. Motor; 15. Reducer; 16. Limiting component; 17. Vibrating rod; 18. Connecting component; 19. Vibrating component; 2. Screening assembly; 21. Screening plate; 22. A guide plate; 23. B guide plate; 24. Column; 3. Cleaning assembly; 31. Insertion plate; 32. Fixing plate; 33. Screw; 34. Ratchet; 35. Ratchet tooth; 36. A electrically controlled telescopic rod; 37. Mounting plate; 38. Insertion slot; 39. Fan; 4. Limiting assembly; 41. Expansion plate; 42. Entry slot; 43. Abutting component; 44. Lifting component; 45. B electrically controlled telescopic rod; 46. Sliding slot. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] Please see Figures 1-8This utility model provides a multi-stage screening device for lithium battery anode materials, including a vibrating screen assembly 1, a screening assembly 2 and a cleaning assembly 3 on the vibrating screen assembly 1, and a limit assembly 4 on the cleaning assembly 3.

[0029] The vibrating screen assembly 1 includes a vibrating screen body 13, a vibrating element 19 is provided on the vibrating screen body 13, a connecting element 18 is provided on the vibrating element 19, a vibrating rod 17 is provided inside the connecting element 18, and two limiting elements 16 are provided on the vibrating rod 17.

[0030] The screening component 2 includes screening plates 21, and multiple screening plates 21 are provided. All screening plates 21 are provided on the vibrating screen body 13. The multiple screening plates 21 are arranged in an upper and lower structure, and the diameter of the screening holes of the multiple screening plates 21 decreases from top to bottom. Multiple A guide plates 22 are provided on the vibrating screen body 13. The multiple A guide plates 22 are respectively connected to the screening plates 21, and the connection is smooth.

[0031] Specifically, when screening the negative electrode material used in lithium battery production, the negative electrode material can be first fed onto the screening plate 21 by vibrating the vibrating screen body 13. At this time, the vibration of the vibrating screen body 13 can drive the screening plate 21 to vibrate, thereby improving the screening efficiency. During the screening process, in order to screen materials of different sizes in the negative electrode material, three screening plates 21 can be fixedly set on the vibrating screen body 13. The three screening plates 21 are arranged in an upper and lower structure, and the screening holes of the three screening plates 21 decrease from top to bottom. At this time, the negative electrode material that meets the size requirements can be screened out and discharged through the A guide plate 22.

[0032] In this embodiment, the vibrating screen assembly 1 also includes a support frame 11, the vibrating screen body 13 is disposed on the support frame 11, a funnel 12 is disposed on the support frame 11, the funnel 12 is disposed directly below the vibrating screen body 13, and two limiting members 16 are disposed on the support frame 11.

[0033] Specifically, in order to ensure that the vibrating screen body 13 can be set stably during use, the vibrating screen body 13 is set on the support frame 11, and in order to collect the finest negative electrode material after screening, a funnel 12 can be fixedly set on the support frame 11.

[0034] In this embodiment, a motor 14 is provided on the support frame 11, a reducer 15 is provided on the motor 14, and a vibration rod 17 is provided on the reducer 15.

[0035] Specifically, when vibrating the vibrating screen body 13, a vibrating element 19 can be fixedly installed at the lower end of the vibrating screen body 13, and a connecting element 18 can be fixedly installed on the vibrating element 19. The vibrating rod 17 is rotatably installed inside the connecting element 18, and the vibrating rod 17 is limited by two limiting elements 16. At this time, by connecting the motor 14 and the reducer 15, the motor 14 is started and the reducer 15 reduces the speed, which can drive the vibrating rod 17 to rotate. Through the unique structure of the vibrating rod 17, namely the U-shaped structure in the middle, the connecting element 18 can be moved up and down, which in turn can drive the vibrating screen body 13 to vibrate.

[0036] In this embodiment, the screening component 2 also includes two columns 24, both of which are mounted on the vibrating screen body 13, and a guide plate 23 B is provided between the two columns 24.

[0037] Specifically, in order to prevent leakage of negative electrode material when it is added, a column 24 can be set on the vibrating screen body 13, and a guide plate 23 B can be set between the two columns 24. Through the guidance of the guide plate 23 B, the negative electrode material can be completely added to the screening plate 21.

[0038] In this embodiment, the cleaning component 3 includes an insertion plate 31. An insertion slot 38 is provided at the lower end of the vibrating screen body 13. The insertion plate 31 is disposed inside the insertion slot 38 and is disposed below multiple screening plates 21. Multiple fans 39 are provided on the insertion plate 31.

[0039] Specifically, when cleaning the screening plate 21, the insertion plate 31 can be inserted into the insertion slot 38 first. This allows the insertion plate 31 to be set stably. Since multiple fans 39 are fixedly installed on the insertion plate 31, the simultaneous operation of multiple fans 39 can blow air from the bottom of the three screening plates 21, thereby blowing out the negative electrode material that is blocked inside the screening holes of the screening plate 21 and thus avoiding blockage.

[0040] In this embodiment, the cleaning component 3 also includes a fixing plate 32, which is disposed on the vibrating screen body 13. A screw 33 is disposed on the fixing plate 32, a ratchet 34 is disposed on the screw 33, and a ratchet tooth 35 is disposed on the fixing plate 32. The ratchet tooth 35 and the ratchet 34 are engaged.

[0041] Specifically, in order to ensure the stable setting of the insertion plate 31, a fixed plate 32 can be set on the vibrating screen body 13, and a screw 33 is rotatably set on the fixed plate 32. A ratchet 34 is set at the end of the screw 33, and a ratchet tooth 35 is rotatably set on the fixed plate 32. The ratchet tooth 35 and the ratchet 34 are engaged, so that the screw 33 can only rotate in one opposite direction. At this time, the insertion plate 31 is slowly inserted into the insertion groove 38. The insertion plate 31 will gradually be threadedly connected to the screw 33 and drive the screw 33 to rotate. After the insertion plate 31 is fully set, the screw 33 stops rotating. The ratchet tooth 35 engages the ratchet 34, so that the screw 33 cannot deflect in the opposite direction, thus ensuring the stable setting of the insertion plate 31.

[0042] In this embodiment, a mounting plate 37 is provided on the fixing plate 32, and an A electrically controlled telescopic rod 36 is provided on the mounting plate 37. A deflector is provided on the telescopic end of the A electrically controlled telescopic rod 36. The deflector is connected to the ratchet 35, and the insertion plate 31 is threadedly connected to the screw 33.

[0043] Specifically, in order to facilitate the removal of the insertion plate 31 after cleaning, a mounting plate 37 can be installed on the fixing plate 32, and an A electrically controlled telescopic rod 36 can be installed on the mounting plate 37. A deflector can be installed at the telescopic end of the A electrically controlled telescopic rod 36, and the deflector can be rotatably connected to the ratchet 35. By retracting the A electrically controlled telescopic rod 36, the ratchet 35 can be rotated, thereby releasing the engagement of the ratchet 34. By rotating the ratchet 34 in the opposite direction, the threaded connection between the insertion plate 31 and the screw 33 can be released, and the insertion plate 31 can be easily removed.

[0044] In this embodiment, the limiting component 4 includes an extension plate 41, which is disposed on the vibrating screen body 13. An entry groove 42 is provided on the extension plate 41, and a sliding groove 46 is provided on the insertion plate 31. An abutment 43 is disposed in the sliding groove 46, and a lifting member 44 is disposed on the abutment 43. The lifting member 44 slides through the surface of the insertion plate 31. A B electrically controlled telescopic rod 45 is disposed on the insertion plate 31, and the telescopic end of the B electrically controlled telescopic rod 45 is connected to the lifting member 44.

[0045] Specifically, in order to make the insertion plate 31 more stable during use, when the insertion plate 31 is inserted into the insertion slot 38, the abutment 43 can be placed inside the entry slot 42. By subsequently retracting the B-controlled telescopic rod 45, the lifting member 44 can be moved downward, which in turn can move the abutment 43 downward. Through the stable setting of the abutment 43 and the expansion plate 41, the insertion plate 31 can be stably set.

[0046] The working principle and usage process of this utility model are as follows: When screening the negative electrode material used in lithium battery production, the vibrating screen assembly 1 can be started first, and the negative electrode material can be put into the screening assembly 2. The start of the vibrating screen assembly 1 can drive the screening assembly 2 to vibrate, thereby screening the negative electrode material. Through multiple screening plates 21, the negative electrode material can be screened in multiple stages, so that negative electrode materials of different specifications and sizes can be screened out. If the screening plate 21 becomes clogged after a long period of screening, the cleaning assembly 3 can be set on the vibrating screen assembly 1 and limited by the limiting assembly 4. The cleaning assembly 3 can blow air at the bottom of the screening plate 21, thereby blowing out the clogged negative electrode material and eliminating the blockage.

[0047] The electronic components and modules used in this utility model can all be parts that are commonly used in the market and can achieve the specific functions in this case. The specific models and sizes can be selected and adjusted according to actual needs.

[0048] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A multi-stage screening device for lithium battery negative material, comprising a vibrating screen assembly (1), characterized in that: The vibrating screen assembly (1) is provided with a screening assembly (2) and a cleaning assembly (3), and the cleaning assembly (3) is provided with a limit assembly (4). The vibrating screen assembly (1) includes a vibrating screen body (13), a vibrating element (19) is provided on the vibrating screen body (13), a connecting element (18) is provided on the vibrating element (19), a vibrating rod (17) is provided inside the connecting element (18), and two limiting elements (16) are provided on the vibrating rod (17). The screening component (2) includes a screening plate (21), and multiple screening plates (21) are provided. All screening plates (21) are provided on the vibrating screen body (13). The multiple screening plates (21) are arranged in an upper and lower structure, and the diameter of the screening holes of the multiple screening plates (21) decreases from top to bottom. Multiple A guide plates (22) are provided on the vibrating screen body (13). The multiple A guide plates (22) are respectively connected to the screening plates (21), and the connection is smooth.

2. The multi-stage screening device for lithium battery anode materials according to claim 1, characterized in that: The vibrating screen assembly (1) also includes a support frame (11), the vibrating screen body (13) is disposed on the support frame (11), a funnel (12) is disposed on the support frame (11), the funnel (12) is disposed directly below the vibrating screen body (13), and two limiting members (16) are disposed on the support frame (11).

3. The multi-stage screening device for lithium battery anode materials according to claim 2, characterized in that: A motor (14) is provided on the support frame (11), a reducer (15) is provided on the motor (14), and the vibration rod (17) is provided on the reducer (15).

4. The multi-stage screening device for lithium battery anode materials according to claim 1, characterized in that: The screening component (2) also includes two columns (24), both of which are mounted on the vibrating screen body (13), and a B guide plate (23) is provided between the two columns (24).

5. The multi-stage screening device for lithium battery anode materials according to claim 1, characterized in that: The cleaning component (3) includes an insertion plate (31). The lower end of the vibrating screen body (13) is provided with an insertion slot (38). The insertion plate (31) is located inside the insertion slot (38) and is located below multiple screening plates (21). Multiple fans (39) are provided on the insertion plate (31).

6. The multi-stage screening device for lithium battery anode materials according to claim 5, characterized in that: The cleaning component (3) also includes a fixing plate (32), which is disposed on the vibrating screen body (13). A screw (33) is disposed on the fixing plate (32), a ratchet (34) is disposed on the screw (33), and a ratchet tooth (35) is disposed on the fixing plate (32). The ratchet tooth (35) and the ratchet tooth (34) are engaged.

7. The multi-stage screening device for lithium battery anode materials according to claim 6, characterized in that: The fixing plate (32) is provided with an mounting plate (37), the mounting plate (37) is provided with an A-type electric telescopic rod (36), the telescopic end of the A-type electric telescopic rod (36) is provided with a deflector, the deflector is connected to a ratchet (35), and the insertion plate (31) is threadedly connected to a screw (33).

8. The multi-stage screening device for lithium battery anode materials according to claim 5, characterized in that: The limiting component (4) includes an extension plate (41), which is disposed on the vibrating screen body (13). An entry groove (42) is provided on the extension plate (41), and a sliding groove (46) is provided on the insertion plate (31). An abutment (43) is provided in the sliding groove (46), and a lifting member (44) is provided on the abutment (43). The lifting member (44) slides through the surface of the insertion plate (31). A B electrically controlled telescopic rod (45) is provided on the insertion plate (31), and the telescopic end of the B electrically controlled telescopic rod (45) is connected to the lifting member (44).

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