A mixing device for preparing a lithium battery graphite negative electrode material

Abstract

The application belongs to the technical field of battery material mixing, and provides a mixing device for preparing graphite negative material of lithium battery, which comprises a material distributing device, a material mixing device, a support assembly and a feeding component.The material distributing device comprises a distributing box and a sliding part, a cover plate is arranged on the top of the distributing box, and a power component is arranged on the cover plate; the distributing box is internally provided with a bulk material distributing device which reciprocates in a vertical direction under the drive of the power component; the feeding component is arranged on the material distributing device, and the discharge end of the feeding component extends into the material distributing device; the material mixing device comprises a mixing box, the mixing box is internally provided with a stirring assembly, and the lower part of the mixing box is provided with a discharge part.In the application, the bulk material distributing device fully scatters multiple raw materials, so that the re-mixing of the dispersed raw materials is more uniform, and the mixing quality of the raw materials is improved; the sliding part is provided with a filter screen to block the agglomerated objects in the raw materials and to take out the agglomerated objects.

Description

Technical Field

[0001] This invention belongs to the field of battery material mixing technology, and relates to mixing devices, particularly a mixing device for preparing graphite anode materials for lithium batteries. Background Technology

[0002] In daily life, nano-graphene composite materials have the characteristics of high mechanical strength, good thermal conductivity, stable structure, low resistivity and fast electron conduction rate. A mixing and stirring device is required when preparing nano-graphene composite materials.

[0003] Currently, most mixing devices used in the production of graphite anode materials suffer from problems. When raw materials are poured into the device, they tend to clump together, making it difficult to disperse them evenly and significantly reducing mixing efficiency. Furthermore, some raw materials may clump together, preventing thorough mixing and lowering the overall mixing quality. Summary of the Invention

[0004] The purpose of this invention is to address the aforementioned problems in existing technologies by proposing a mixing device for preparing graphite anode materials for lithium batteries. The technical problem this invention aims to solve is: how to achieve high-quality and efficient mixing of raw materials, and how to remove agglomerates.

[0005] The objective of this invention can be achieved through the following technical solutions:

[0006] A mixing device for preparing graphite anode materials for lithium batteries includes a dispensing device, a mixing device, a support assembly, and a feeding component. The dispensing device is located on the upper part of the support assembly, and the mixing device is located on the lower part of the support assembly. The dispensing device includes a dispensing box and a sliding component. A cover plate is provided on the top of the dispensing box, and a power component is provided on the cover plate. The inner wall of the dispensing box is provided with a track that is slidably connected to the sliding component. A through hole is provided on the lower side wall of the dispensing box for the sliding component to pass through and extend into the dispensing box. The sliding component is drawer-shaped and has a filter screen at its bottom. The dispensing box contains a material dispersing device that reciprocates vertically under the drive of the power component. The feeding component is located on the dispensing device, with its discharge end extending into the dispensing device and positioned above the material dispersing device. The mixing device includes a mixing box, with a stirring assembly inside the mixing box and a discharge section at the bottom of the mixing box.

[0007] Furthermore, the power component includes a first motor, a driving gear, a driven gear, a fixing plate, a rotating shaft, a disc, a steel wire and a limiting ball; the cover plate is arranged on the top of the material distribution box; the first motor is arranged on the top of the cover plate, the driving gear is connected to the first motor, and a through hole II for the driving gear to pass through is formed on the cover plate; the fixing plate is arranged at the bottom of the cover plate, the rotating shaft is rotatably arranged on the fixing plate, the driven gear is fixed on the rotating shaft, and the driven gear meshes with the driving gear; discs are arranged at both ends of the rotating shaft, positioning rods are vertically arranged on the disc surfaces, and limiting rings are sleeved on the positioning rods; the upper end of the steel wire is connected to the limiting ring, and the lower end of the steel wire is connected to the limiting ball; the limiting ball is arranged on the material distribution device.

[0008] Furthermore, a threaded blind hole is formed on the disc, the positioning rod is screwed into the threaded blind hole, and the end of the positioning rod abuts against the inner wall of the material distribution box.

[0009] Furthermore, the inner diameter of the limiting ring is larger than the diameter of the positioning rod, or the limiting ring is rotatably connected to the positioning rod.

[0010] Furthermore, the bulk material device includes a fixing frame, a bulk material plate and a rotating component; specifically, two bulk material devices are provided; one end of the fixing frame is connected to the rotating component, the rotating component is rotatably arranged on the inner wall of the material distribution box, and specifically, the two groups of rotating components are respectively arranged on any two side walls of the material distribution box; the bulk material plate is arranged on the fixing frame, a plurality of material distribution holes are formed on the bulk material plate, a partition net is arranged on the material distribution holes, and a discharge hole is formed at one end of the bulk material plate close to the rotating component; the lower end of the steel wire passes through the partition net; the limiting ball is located at the bottom of the bulk material plate, and the limiting ball is pressed against the bottom of the bulk material plate.

[0011] Furthermore, the edge of the fixing frame is fitted with the inner wall of the material distribution box.

[0012] Furthermore, both the material distribution holes and the discharge holes are strip-shaped holes, the width of the discharge hole is larger than the width of the material distribution hole, and the material distribution holes and the discharge holes are parallel to each other; the diameter of the limiting ball is larger than the width of the material distribution hole, and the diameter of the steel wire is smaller than the minimum mesh width of the partition net.

[0013] Furthermore, the mixing device includes a mixing box, and a second motor for power connection with the stirring component is arranged at the bottom of the mixing box; the stirring component includes a stirring shaft, a first stirring piece is arranged at the upper part of the stirring shaft, and a second stirring piece is arranged at the lower part of the stirring shaft.

[0014] Furthermore, the first stirring piece is in a shape of "卅"; the second stirring piece includes a cross bar arranged on the stirring shaft and an arc plate arranged on the cross bar.

[0015] Furthermore, the support assembly includes a connecting plate, with an upper connecting frame at the top of the connecting plate that is connected to the dispensing equipment, a lower connecting frame at the bottom of the connecting plate that is connected to the mixing equipment, and multiple support legs around the connecting plate.

[0016] The connecting plate has a through hole in the middle for connecting the discharge end of the material distribution equipment and the feed end of the mixing equipment.

[0017] Compared with existing technologies, this mixing device for preparing graphite anode materials for lithium batteries has the following advantages:

[0018] Raw materials enter the distributing equipment through the feeding component and then fall onto the bulk material distribution equipment. Driven by the power component, the bulk material distribution equipment oscillates vertically, dispersing the raw materials and ensuring thorough mixing. This process ensures more uniform mixing after dispersion, improving the overall quality of the mixture. After passing through the distributing equipment, the raw materials enter the mixing equipment, where they are further mixed by the stirring components, further enhancing mixing efficiency and quality. A filter screen is installed in the sliding part to block any clumps in the raw materials, improving the mixing quality. Removing the sliding part allows for easy removal of any clumps for centralized crushing. Attached Figure Description

[0019] Figure 1 This is a three-dimensional schematic diagram of the present invention.

[0020] Figure 2 This is a schematic diagram of the support assembly in this invention.

[0021] Figure 3 This is a schematic diagram of the external structure of the material distribution device in this invention.

[0022] Figure 4 This is a schematic diagram of the internal structure of the material distribution device in this invention.

[0023] Figure 5 This is a schematic diagram of the power component in this invention.

[0024] Figure 6 This is a schematic diagram of the material distribution equipment in this invention.

[0025] Figure 7 This is a schematic diagram of the internal structure of the mixing equipment in this invention.

[0026] Figure 8 This is a schematic diagram of the structure of the stirring component 2 in this invention.

[0027] In the diagram: 1. Material distribution equipment; 11. Material distribution box; 12. Through hole one; 13. Sliding component; 14. Filter screen; 15. Cover plate; 16. Through hole two; 2. Mixing equipment; 20. Mixing box; 21. Motor two; 22. Agitator shaft; 23. Agitator one; 24. Agitator two; 241. Crossbar; 242. Arc plate; 25. Discharge section; 3. Support assembly; 31. Connecting plate; 32. Upper connecting frame; 33. Lower... 34. Connecting frame; 5. Support leg; 6. Feeding component; 7. Power component; 8. Motor 1; 9. Drive gear; 10. Driven gear; 11. Fixing plate; 12. Rotating shaft; 13. Disc; 14. Positioning rod; 15. Limiting ring; 16. Steel wire; 17. Limiting ball; 18. Material dispensing device; 19. Fixing frame; 20. Material dispensing plate; 21. Distributing hole; 32. Partition net; 43. Unloading hole; 54. Rotating component. Detailed Implementation

[0028] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0029] like Figures 1-8 As shown, this embodiment provides a mixing device for preparing graphite anode materials for lithium batteries, including a dispensing device 1, a mixing device 2, a support assembly 3, and a feeding component 4. The dispensing device 1 is located on the upper part of the support assembly 3, and the mixing device 2 is located on the lower part of the support assembly 3. The raw materials are first dispersed and then stirred and mixed to improve the mixing quality.

[0030] The material distribution device 1 includes a material distribution box 11 and a sliding component 13. A cover plate 15 is provided on the top of the material distribution box 11, and a power component 5 is provided on the cover plate 15. During operation, the cover plate 15 can be lifted upwards first, and then the power component 5 can be easily removed.

[0031] The inner wall of the material distribution box 11 is provided with a track that is slidably connected to the sliding member 13. A through hole 12 is provided on the lower side wall of the material distribution box 11 for the sliding member 13 to pass through and extend into the material distribution box 11. The sliding member 13 is drawer-shaped and a filter screen 14 is provided at its bottom. The sliding member 13 is easy to take out and insert.

[0032] The material distribution box 11 is equipped with a material handling device 6 that reciprocates vertically under the drive of the power unit 5.

[0033] The feeding component 4 is installed on the material distribution device 1. The discharge end of the feeding component 4 extends into the material distribution device 1, and the discharge end of the feeding component 4 is located above the material distribution device 6.

[0034] The mixing equipment 2 includes a mixing tank 20, a stirring assembly is installed inside the mixing tank 20, and a discharge section 25 is provided at the bottom of the mixing tank 20.

[0035] In this invention, raw materials enter the distributing device 1 through the feeding component 4 and then fall onto the bulk material device 6. Driven by the power component 5, the bulk material device 6 oscillates vertically, dispersing the raw materials and ensuring thorough mixing of the various materials. This results in more uniform re-mixing after dispersion, improving the mixing quality. After passing through the distributing device 1, the raw materials enter the mixing device 2, where they are further thoroughly mixed by the stirring component, further improving mixing efficiency and quality. The discharge section 25 is used for discharging the materials.

[0036] In this invention, the sliding member 13 is provided with a filter screen 14 to block clumps in the raw materials, thereby improving the quality of raw material mixing; after the sliding member 13 is pulled out, the clumps can be easily removed so that they can be crushed in a concentrated manner.

[0037] The power component 5 includes a motor 51, a drive gear 52, a driven gear 53, a fixed plate 54, a rotating shaft 55, a disc 56, a steel wire 59, and a limit ball 60;

[0038] The cover plate 15 is located on the top of the material distribution box 11 and has good sealing properties, thereby ensuring that no other debris enters the material distribution box 11.

[0039] Motor 1 51 is located on the top of cover plate 15, and drive gear 52 is connected to motor 1 51. Cover plate 15 has through hole 2 16 for drive gear 52 to pass through, ensuring normal rotation of drive gear 52.

[0040] The fixed plate 54 is set at the bottom of the cover plate 15, and the rotating shaft 55 is rotatably mounted on the fixed plate 54. The driven gear 53 is fixed on the rotating shaft 55 and meshes with the driving gear 52. The fixed plate 54 provides good support for the rotating shaft 55 to ensure that the rotating shaft 55 can be arranged horizontally, thereby improving the stability of the rotation of the disc 56. At the same time, by adjusting the power of the motor 51, the rotation speed of the rotating shaft 55 can be ultimately adjusted to ensure the best working effect.

[0041] Both ends of the rotating shaft 55 are provided with discs 56, and positioning rods 57 are vertically arranged on the surface of the discs 56. A limiting ring 58 is sleeved on the positioning rod 57. The upper end of the steel wire 59 is connected to the limiting ring 58, and the lower end of the steel wire 59 is connected to the limiting ball 60. The limiting ball 60 is set on the material distribution equipment 1.

[0042] In this invention, the positioning rod 57 can rotate with the disc 56, enabling both discs 56 and the positioning rod 57 to rotate simultaneously, thus preventing the steel wire 59 from colliding with other objects and causing the equipment to malfunction. During the rotation of the disc 56, when the positioning rod 57 moves upward, it pulls the steel wire 59 upward, causing the limiting ball 60 to drive the material distribution device 6 to swing upward. When the positioning rod 57 moves downward, the material distribution device 6 swings downward under gravity. During the swinging process of the material distribution device 6, the accumulated raw materials are dispersed, thereby increasing the contact and mixing area between the raw materials and improving the mixing quality.

[0043] A threaded blind hole is provided on the disc 56, and the positioning rod 57 is screwed into the threaded blind hole, making it easy to disassemble and install. The end of the positioning rod 57 abuts against the inner wall of the distribution box 11, preventing the limiting ring 58 from falling off and ensuring the normal operation of the equipment. The inner diameter of the limiting ring 58 is larger than the diameter of the positioning rod 57, or the limiting ring 58 is rotatably connected to the positioning rod 57. During the movement of the positioning rod 57, the limiting ring 58 rotates around the positioning rod 57, thereby ensuring the normal operation of the equipment.

[0044] The bulk material handling equipment 6 includes a fixed frame 61, a bulk material plate 62, and a rotating component 66; there are two bulk material handling equipment 6; the power component 5 can drive the two sets of bulk material handling equipment 6 to swing at the same time, thereby increasing the number of times the raw materials are dispersed, so as to improve the dispersion effect of the raw materials and make the re-mixing of the raw materials after dispersion more uniform, thus improving the mixing quality.

[0045] One end of the fixed frame 61 is connected to a rotating component 66, which is rotatably mounted on the inner wall of the distribution box 11. Two sets of rotating components 66 are respectively mounted on any two side walls of the distribution box 11, causing the material distribution plate 62 to swing in different directions, thus resulting in different directions of material dispersion and more thorough re-mixing after dispersion. The material distribution plate 62 is mounted on the fixed frame 61, and has multiple distribution holes 63. A partition mesh 64 is installed on each distribution hole 63. A discharge hole 65 is located at the end of the material distribution plate 62 closest to the rotating component 66.

[0046] In the present invention, the raw materials fall on the spreading plate 62. During the swinging process of the spreading plate 62, the raw materials gradually move towards the rotating component 66. During the movement of the raw materials, they fall downward through the material dividing holes 63. The partition net 64 has a good delaying effect, which can not only ensure that the raw materials do not all fall from the material dividing holes 63, but also delay the falling speed of the raw materials, so as to ensure that the raw materials can move smoothly on the spreading plate 62 until the entire spreading plate 62 is covered, thereby increasing the dispersion range of the raw materials and improving the subsequent mixing quality. At the same time, in order to avoid excessive accumulation of raw materials, some raw materials will completely fall through the discharge holes 65 to prevent the raw materials from accumulating on the spreading plate 62. It should be noted that since the swinging directions of the two spreading plates 62 are different, the falling raw materials are dispersed again on the lower spreading plate 62, thereby further improving the quality of mixing after dispersion and ensuring full mixing of the raw materials.

[0047] The lower end of the steel wire 59 passes through the partition net 64. The limiting ball 60 is located at the bottom of the spreading plate 62, and the limiting ball 60 is pressed against the bottom of the spreading plate 62. The diameter of the limiting ball 60 is greater than the width of the material dividing hole 63, so that the limiting ball 60 can timely drive the spreading plate 62 to swing upward.

[0048] The edge of the fixing frame 61 is in contact with the inner wall of the material dividing box 11 to prevent the raw materials from falling from the side and ensure the best effect of dispersing the raw materials.

[0049] Both the material dividing holes 63 and the discharge holes 65 are strip-shaped holes, with a large falling area of the raw materials and good sieving effect. The width of the discharge hole 65 is greater than the width of the material dividing hole 63 to ensure the full falling of the materials and avoid accumulation. The material dividing holes 63 and the discharge holes 65 are parallel to each other.

[0050] The diameter of the steel wire 59 is smaller than the minimum mesh width of the partition net 64 to ensure that the steel wire 59 can slide normally within the mesh holes of the partition net 64.

[0051] The mixing device 2 includes a mixing box 20. A motor two 21 is arranged at the bottom of the mixing box 20 and is power-connected to the stirring component. The stirring component includes a stirring shaft 22. A stirring member one 23 is arranged on the upper part of the stirring shaft 22, and a stirring member two 24 is arranged on the lower part of the stirring shaft 22. The stirring member one 23 is in the shape of "卅". The stirring member two 24 includes a cross bar 241 arranged on the stirring shaft 22 and an arc-shaped plate 242 arranged on the cross bar 241.

[0052] In the present invention, the motor two 21 drives the stirring component to stir the raw materials to make the raw materials fully mixed. Among them, the arc-shaped plate 242 is used to turn the raw materials at the bottom of the mixing box 20 upward to the position of the stirring member one 23, and the stirring member one 23 is used to disperse and remix the raw materials. The stirring member one 23 and the stirring member two 24 cooperate with each other to improve the mixing quality and mixing efficiency of the raw materials. [[ID=,20]]

[0053] The support assembly 3 includes a connecting plate 31. The top of the connecting plate 31 has an upper connecting frame 32 that connects to the distributing device 1, forming a sealing mechanism between the upper connecting frame 32 and the distributing device 1. The bottom of the connecting plate 31 has a lower connecting frame 33 that connects to the mixing device 2, forming a sealing mechanism between the lower connecting frame 33 and the mixing device 2 to prevent raw material leakage. Multiple support feet 34 are provided around the connecting plate 31 to improve the overall stability of the equipment. A through hole is provided in the middle of the connecting plate 31 to connect the discharge end of the distributing device 1 and the inlet end of the mixing device 2, allowing for the normal downward flow of the raw material.

[0054] The specific embodiments described herein are merely illustrative of the spirit of the invention. Those skilled in the art to which this invention pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of the invention or exceeding the scope defined by the appended claims.

Claims

1. A mixing apparatus for preparing graphite anode materials for lithium batteries, characterized in that, It includes a material distribution device (1), a mixing device (2), a support assembly (3) and a feeding component (4). The material distribution device (1) is located on the upper part of the support assembly (3), and the mixing device (2) is located on the lower part of the support assembly (3). The material distribution device (1) includes a material distribution box (11) and a sliding component (13). A cover plate (15) is provided on the top of the material distribution box (11), and a power component (5) is provided on the cover plate (15). The inner wall of the material distribution box (11) is provided with a track that is slidably connected to the sliding member (13), and a through hole (12) is provided on the lower side wall of the material distribution box (11) for the sliding member (13) to pass through and extend into the material distribution box (11). The sliding member (13) is drawer-shaped and has a filter screen (14) at its bottom. The material distribution box (11) is equipped with a material distribution device (6) that swings back and forth in the vertical direction under the drive of the power component (5). The feeding component (4) is installed on the material distribution device (1), the discharge end of the feeding component (4) extends into the material distribution device (1), and the discharge end of the feeding component (4) is located above the material distribution device (6); The mixing equipment (2) includes a mixing tank (20), a stirring assembly is provided inside the mixing tank (20), and a discharge section (25) is provided at the bottom of the mixing tank (20). The power component (5) includes a steel wire (59) and a limiting ball (60); The bulk material handling equipment (6) includes a fixed frame (61), a bulk material plate (62), and a rotating component (66); wherein, two bulk material handling equipment (6) are provided; One end of the fixed frame (61) is connected to the rotating component (66), which is rotatably mounted on the inner wall of the material distribution box (11). The two sets of rotating components (66) are respectively mounted on any two side walls of the material distribution box (11). The material distribution plate (62) is mounted on the fixed frame (61). Multiple material distribution holes (63) are opened on the material distribution plate (62). A partition net (64) is installed on the material distribution hole (63). A discharge hole (65) is opened at one end of the material distribution plate (62) near the rotating component (66). The lower end of the steel wire (59) passes through the mesh (64). The limiting ball (60) is located at the bottom of the bulk material plate (62), and the limiting ball (60) is pressed against the bottom of the bulk material plate (62).

2. The mixing apparatus for preparing graphite anode material for lithium batteries according to claim 1, characterized in that, The power unit (5) also includes a motor (51), a drive gear (52), a driven gear (53), a fixed plate (54), a rotating shaft (55), and a disc (56). The cover plate (15) is disposed on the top of the material distribution box (11); The motor (51) is located on the top of the cover plate (15), the drive gear (52) is connected to the motor (51), and the cover plate (15) has a through hole (16) for the drive gear (52) to pass through. The fixed plate (54) is set at the bottom of the cover plate (15), the rotating shaft (55) is rotatably set on the fixed plate (54), the driven gear (53) is fixed on the rotating shaft (55), and the driven gear (53) meshes with the driving gear (52); Both ends of the rotating shaft (55) are provided with discs (56). Positioning rods (57) are vertically arranged on the surfaces of the discs (56), and limit rings (58) are sleeved on the positioning rods (57). The upper end of the steel wire (59) is connected to the limit ring (58), and the lower end of the steel wire (59) is connected to the limit ball (60). The limit ball (60) is arranged on the material distributing device (1).

3. The mixing apparatus for preparing graphite anode material for lithium batteries according to claim 2, characterized in that, Threaded blind holes are formed in the discs (56), and the positioning rods (57) are screwed into the threaded blind holes. The ends of the positioning rods (57) are abutted against the inner wall of the material distributing box (11).

4. The mixing apparatus for preparing graphite anode material for lithium batteries according to claim 2, characterized in that, The inner diameter of the limit ring (58) is larger than the diameter of the positioning rod (57), or the limit ring (58) is rotatably connected to the positioning rod (57).

5. The mixing apparatus for preparing graphite anode material for lithium batteries according to claim 1, characterized in that, The edge of the fixing frame (61) is in contact with the inner wall of the material distributing box (11).

6. The mixing apparatus for preparing graphite anode material for lithium batteries according to claim 5, characterized in that, Both the material distributing holes (63) and the discharging holes (65) are strip-shaped holes. The width of the discharging holes (65) is larger than the width of the material distributing holes (63), and the material distributing holes (63) and the discharging holes (65) are parallel to each other. The diameter of the limit ball (60) is larger than the width of the material distributing holes (63), and the diameter of the steel wire (59) is smaller than the minimum mesh width of the partition net (64).

7. The mixing apparatus for preparing graphite anode material for lithium batteries according to claim 5, characterized in that, The mixing device (2) includes a mixing box (20). A second motor (21) which is power-connected to the stirring component is arranged at the bottom of the mixing box (20). The stirring component includes a stirring shaft (22). A first stirring member (23) is arranged at the upper part of the stirring shaft (22), and a second stirring member (24) is arranged at the lower part of the stirring shaft (22).

8. The mixing apparatus for preparing graphite anode material for lithium batteries according to claim 7, characterized in that, The first stirring member (23) is in the shape of "卅". The second stirring member (24) includes a cross bar (241) arranged on the stirring shaft (22) and an arc-shaped plate (242) arranged on the cross bar (241).

9. A mixing apparatus for preparing graphite anode material for lithium batteries according to claim 1 or 5, characterized in that, The support component (3) includes a connecting plate (31). An upper connecting frame (32) connected to the material distributing device (1) is arranged at the top of the connecting plate (31). A lower connecting frame (33) connected to the mixing device (2) is arranged at the bottom of the connecting plate (31). A plurality of support feet (34) are arranged around the connecting plate (31). A through hole for connecting the discharging end of the material distributing device (1) and the feeding end of the mixing device (2) is formed in the middle of the connecting plate (31).

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