Crushing and screening device for negative electrode material

Abstract

The invention relates to the technical field of cathode material processing, in particular to a cathode material crushing and screening device which comprises a shell, a crushing mechanism and a screening mechanism, the crushing mechanism and the screening mechanism are arranged in the shell, the crushing mechanism comprises a crushing assembly and a first driving assembly, and the first driving assembly is used for driving the crushing mechanism to rotate; preliminarily crushing the negative electrode material; the crushing assembly comprises a first crushing roller and a second crushing roller, the first crushing roller and the second crushing roller are connected in a meshed mode, center shafts are fixedly inserted into the centers of the first crushing roller and the second crushing roller in a penetrating mode, and the first crushing roller and the second crushing roller are rotationally installed on the inner wall of the upper half portion of the shell through the center shafts. Raw materials are ground and smashed through cooperation of the grinding plate and the abutting plate, so that the raw materials are ground into powder and fall to the bottom of the shell through the driven gear, the screened raw materials with large particles do not need to be recycled and retreated, and time and labor are saved.

Description

Technical Field

[0001] The invention relates to the technical field of negative electrode material processing, and in particular to a negative electrode material crushing and screening device. Background Art

[0002] The raw materials of negative electrode materials mainly come from graphite mines, graphite processing plants and chemical plants, etc. Different negative electrode materials have different raw materials. For example, the main raw materials of natural graphite and artificial graphite are natural graphite ore and coke, etc.; the raw materials of silicon-lithium alloy include quartz sand, coke, lithium auxiliary materials, etc.

[0003] After the raw materials are mined, they need to be crushed and screened, and the raw material powder that meets the standards needs to be selected for further mixing, baking, and graphitization to form negative electrode materials. However, in the process of processing raw materials with existing crushing and screening devices, some raw material particles cannot pass the screening due to incomplete crushing and need to be recycled and reprocessed, which is time-consuming and labor-intensive.

[0004] In order to solve the above problems, we propose a negative electrode material crushing and screening device to solve the above problems. Summary of the invention

[0005] In view of the shortcomings of the prior art, the present invention provides a negative electrode material crushing and screening device to solve the technical problem in the prior art that "in the process of processing raw materials by the existing crushing and screening devices, some raw material particles cannot pass the screening due to incomplete crushing and need to be recycled and reprocessed, which is time-consuming and labor-intensive."

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions:

[0007] A negative electrode material pulverizing and screening device comprises a shell, a pulverizing mechanism and a screening mechanism arranged in the shell, wherein the pulverizing mechanism comprises a pulverizing assembly and a first driving assembly, wherein the first driving assembly is used to drive the pulverizing mechanism to rotate and preliminarily pulverize the negative electrode material;

[0008] The pulverizing assembly comprises a first pulverizing roller and a second pulverizing roller, the first pulverizing roller and the second pulverizing roller are meshed and connected, a central shaft is fixedly inserted in the center of the first pulverizing roller and the second pulverizing roller, and the first pulverizing roller and the second pulverizing roller are rotatably mounted on the inner wall of the upper half of the shell through the central shaft;

[0009] The screening mechanism comprises a screening component, a rolling component, and a second driving component, wherein the second driving component drives the rolling component to roll and crush the negative electrode material left on the screening component again;

[0010] The screening assembly comprises two driven gears, two abutment plates and a No. 1 screen, wherein the two driven gears are symmetrically fixedly mounted on the inner wall of the lower half of the housing, the two abutment plates are respectively fixedly mounted on the side walls of the driven gears, and the upper end surfaces of the two abutment plates are jointly fixedly mounted with a No. 1 screen, and the No. 1 screen is in a herringbone shape;

[0011] The rolling assembly includes two rolling plates, a fixed plate and a plurality of guide rods. The two rolling plates are respectively arranged on the opposite sides of the two abutment plates. The rolling plates are slidably connected to the upper end surface of the driven gear. The plurality of guide rods are respectively fixedly installed on the side walls of the two rolling plates at equal intervals. The ends of the plurality of guide rods facing away from the rolling plates all penetrate the side walls of the shell and are fixedly installed on the same fixed plate.

[0012] As a preferred technical solution of the present invention, the No. 1 driving assembly includes a No. 1 shock absorbing plate and a No. 1 servo motor, the No. 1 shock absorbing plate is fixedly mounted on the side wall of the shell, the No. 1 servo motor is fixedly mounted on the upper end surface of the No. 1 shock absorbing plate, and the output end of the No. 1 servo motor passes through the side wall of the shell and is fixedly connected to one end of the central axis on the No. 1 crushing roller.

[0013] As a preferred technical solution of the present invention, the No. 2 driving assembly includes a No. 2 servo motor, a driving gear and two driven gears. The No. 2 servo motor is fixedly mounted on the side wall of the lower half of the shell through a No. 2 shock-absorbing plate. The output end of the No. 2 servo motor is fixedly mounted at the center of the driving gear. The two driven gears are symmetrically arranged on both sides of the driving gear and mesh with the driving gear.

[0014] As a preferred technical solution of the present invention, the two driven gears are rotatably connected to the side wall of the shell through a limiting shaft, a connecting rod is fixedly installed on the side wall of the driven gear, the other end of the connecting rod is rotatably connected to a fixed sleeve, a connecting rod is fixedly installed on the side wall of the fixed sleeve, and the other end of the connecting rod is rotatably connected to the fixed plate through a rotating shaft.

[0015] As a preferred technical solution of the present invention, a material guide plate is provided on the upper end face of the shell, and a material guide port is provided at the center of the material guide plate, and the material guide port is opposite to the meshing position of the No. 1 crushing roller and the No. 2 crushing roller, and the material guide port is used to guide the material between the No. 1 crushing roller and the No. 2 crushing roller.

[0016] As a preferred technical solution of the present invention, the specifications of the rolling plate and the abutment plate are the same.

[0017] As a preferred technical solution of the present invention, a plurality of sliding holes matching the guide rods are formed at equal intervals on the side wall of the shell, and the guide rods are slidably connected in the sliding holes.

[0018] As a preferred technical solution of the present invention, the transmission ratio between the driving gear and the driven gear is 3:1.

[0019] As a preferred technical solution of the present invention, the No. 1 screen is located directly below the meshing point between the No. 1 crushing roller and the No. 2 crushing roller.

[0020] The present invention provides a negative electrode material crushing and screening device, which has the following beneficial effects:

[0021] The No. 2 servo motor drives the driving gear to rotate, which in turn drives the driven gears on both sides to move. The driven gears on both sides drive the connecting rod to rotate, and the connecting rod drives one end of the connecting rod to rotate around the center of the driven gear. The connecting rod drives the fixed plate to move left and right, and the fixed plate drives the guide rod to push the rolling plate to reciprocate and approach the abutment plate. The rolling and crushing of the raw materials are completed through the cooperation of the rolling plate and the abutment plate, so that the raw materials are crushed into powder and fall to the bottom of the shell through the driven gear. There is no need to recycle and reprocess the raw materials with larger particles after screening, which saves time and effort. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0023] Figure 2 It is a structural schematic diagram of the upper half of the present invention;

[0024] Figure 3 It is a structural schematic diagram of the lower half of the present invention;

[0025] Figure 4 It is a structural schematic diagram of the No. 2 drive assembly in the present invention;

[0026] Figure 5 It is a top view of the lower half of the present invention;

[0027] Figure 6 It is a front cross-sectional view of the lower half of the present invention;

[0028] Figure 7 It is a front cross-sectional view of the material guide plate in the present invention.

[0029] In the figure: 1 shell, 2 No. 1 shock absorbing plate, 3 No. 1 servo motor, 4 No. 1 crushing roller, 5 No. 2 crushing roller, 6 No. 2 shock absorbing plate, 7 No. 2 servo motor, 8 connecting rod, 9 rotating shaft, 10 fixed plate, 12 rolling plate, 13 No. 1 screen, 14 back plate, 15 guide rod, 16 driven gear, 17 driving gear, 18 connecting rod, 19 fixed sleeve, 20 limiting shaft, 21 guide plate, 22 guide port. DETAILED DESCRIPTION

[0030] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0031] The principle and structure of the present invention are described in detail below with reference to the accompanying drawings and embodiments:

[0032] refer to Figure 1-7 A negative electrode material crushing and screening device comprises a housing 1, a crushing mechanism and a screening mechanism arranged in the housing 1,

[0033] The pulverizing mechanism includes a pulverizing assembly and a No. 1 driving assembly, wherein the No. 1 driving assembly is used to drive the pulverizing mechanism to rotate and preliminarily pulverize the negative electrode material;

[0034] The crushing assembly includes a No. 1 crushing roller 4 and a No. 2 crushing roller 5, which are meshed and connected. The centers of the No. 1 crushing roller 4 and the No. 2 crushing roller 5 are fixedly interspersed with a central axis. The No. 1 crushing roller 4 and the No. 2 crushing roller 5 are both rotatably installed on the inner wall of the upper half of the shell 1 through the central axis. The No. 1 crushing roller 4 is driven to rotate by the output end of the No. 1 servo motor 3, and the No. 1 crushing roller 4 drives the No. 2 crushing roller 5 to rotate. The raw materials are crushed by the No. 1 crushing roller 4 and the No. 2 crushing roller 5. Since the No. 1 crushing roller 4 and the No. 2 crushing roller 5 have the same specifications, the teeth of the No. 1 crushing roller 4 and the No. 2 crushing roller 5 are precisely meshed, and the raw materials are fully crushed;

[0035] The screening mechanism includes a screening component, a rolling component, and a second driving component. The second driving component drives the rolling component to crush the negative electrode material left on the screening component again.

[0036] The screening assembly includes two driven gears 16, two abutment plates 14 and a No. 1 screen 13. The two driven gears 16 are symmetrically fixedly installed on the inner wall of the lower half of the housing 1. The two abutment plates 14 are respectively fixedly installed on the side walls of the driven gears 16. The upper end surfaces of the two abutment plates 14 are jointly fixedly installed with a No. 1 screen 13. The No. 1 screen 13 is in a herringbone shape. The crushed raw materials fall on the No. 1 screen 13. The raw materials that meet the standards fall on the bottom of the housing 1 after passing through the No. 1 screen 13. The raw materials with larger particles that are not completely crushed slide along the inclined surface of the No. 1 screen 13 to both sides and finally fall on the driven gear 16, so that the crushed raw materials are screened;

[0037] The rolling assembly includes two rolling plates 12, a fixed plate 10 and a plurality of guide rods 15. The two rolling plates 12 are respectively arranged on the opposite side of the two abutment plates 14. The rolling plates 12 are slidably connected to the upper end surface of the driven gear 16. The plurality of guide rods 15 are fixedly installed on the side walls of the two rolling plates 12 at equal intervals. The ends of the plurality of guide rods 15 away from the rolling plates 12 all penetrate the side walls of the shell 1 and are fixedly installed on the same fixed plate 10. The rolling plates 12 are pushed by the guide rods 15 to gather the raw materials on the driven gear 16 to the abutment plates 14. The rolling plates 12 cooperate with the abutment plates 14 to roll the raw materials on the driven gear 16, so that the large particles of raw materials on the driven gear 16 are further crushed. The crushed powder falls to the bottom of the shell 1 through the driven gear 16. There is no need to recover and crush the large particles of raw materials on the driven gear 16, which is convenient, fast, time-saving and labor-saving.

[0038] Among them, driving assembly No. 1 includes shock absorbing plate No. 2 and servo motor No. 3. Shock absorbing plate No. 2 is fixedly mounted on the side wall of shell 1. Servo motor No. 3 is fixedly mounted on the upper end surface of shock absorbing plate No. 2. The output end of servo motor No. 3 passes through the side wall of shell 1 and is fixedly connected with one end of the central axis on crushing roller No. 4.

[0039] Among them, the No. 2 driving component includes a No. 2 servo motor 7, a driving gear 17 and two driven gears 16. The No. 2 servo motor 7 is fixedly installed on the side wall of the lower half of the shell 1 through the No. 2 shock-absorbing plate 6. The output end of the No. 2 servo motor 7 is fixedly installed at the center of the driving gear 17. The two driven gears 16 are symmetrically arranged on both sides of the driving gear 17 and mesh with the driving gear 17. The No. 2 servo motor 7 drives the driving gear 17 to rotate, and then drives the two driven gears 16 to rotate. The driven gear 16 drives the fixed sleeve 19 to rotate through the connecting rod 18, and then drives the connecting rod 8 to rotate around the limit shaft 20, and then drives the fixed plate 10 to move left and right. The fixed plate 10 pushes the rolling plate 12 and the abutment plate 14 through the guide rod 15 to roll the large-particle raw materials together, and the crushing is more complete.

[0040] Among them, the two driven gears 16 are rotatably connected to the side wall of the shell 1 through a limit shaft 20, a connecting rod 18 is fixedly installed on the side wall of the driven gear 16, the other end of the connecting rod 18 is rotatably connected to a fixed sleeve 19, a linkage rod 8 is fixedly installed on the side wall of the fixed sleeve 19, the other end of the linkage rod 8 is rotatably connected to the fixed plate 10 through a rotating shaft 9, and the limit shaft 20 can be disassembled and assembled from the center of the driven gear 16, so as to facilitate the replacement of the driven gear 16.

[0041] Among them, the upper end surface of the shell 1 is provided with a material guide plate 21, and a material guide port 22 is provided at the center of the material guide plate 21. The material guide port 22 is opposite to the meshing position of the No. 1 crushing roller 4 and the No. 2 crushing roller 5. The material guide port 22 is used to guide the material into between the No. 1 crushing roller 4 and the No. 2 crushing roller 5, thereby avoiding the leakage of material at the edges of the No. 1 crushing roller 4 and the No. 2 crushing roller 5.

[0042] The specifications of the rolling plate 12 and the abutment plate 14 are the same, and the rolling plate 12 can completely overlap with the abutment plate 14, thereby improving the rolling effect.

[0043] A plurality of sliding holes matching the guide rods 15 are formed at equal intervals on the side wall of the housing 1 , and the guide rods 15 are slidably connected in the sliding holes.

[0044] Among them, the transmission ratio of the driving gear 17 to the driven gear 16 is 3:1, and the driving gear 17 plays the role of reducing speed and transmitting rotation speed, and is fully utilized.

[0045] The No. 1 screen 13 is located just below the meshing point between the No. 1 crushing roller 4 and the No. 2 crushing roller 5, so that the No. 1 servo motor 3 just contacts the crushed raw material, thus avoiding missing the raw material.

[0046] The working principle of the present invention is as follows: the raw material is placed between the No. 1 crushing roller 4 and the No. 2 crushing roller 5 through the material guide port 22 on 23, and then the No. 1 servo motor 3 is started, and the No. 1 servo motor 3 drives the No. 1 crushing roller 4 to rotate, and the raw material is crushed by the cooperation between the No. 1 crushing roller 4 and the No. 2 crushing roller 5. The qualified raw material falls to the bottom of the housing 1 through the No. 1 screen 13, and the raw material with relatively large particles falls to the driven gears 16 on both sides along the inclined surface of the No. 1 screen 13;

[0047] Next, the No. 2 servo motor 7 drives the driving gear 17 to rotate, and then drives the driven gears 16 on both sides to move, the driven gears 16 on both sides drive the connecting rod 18 to rotate, the connecting rod 18 drives one end of the connecting rod 8 to rotate around the center of the driven gear 16, the connecting rod 8 drives the fixed plate 10 to move left and right, the fixed plate 10 drives the guide rod 15 to push the rolling plate 12 to reciprocate and approach the abutment plate 14, and the rolling and crushing of the raw materials are completed through the cooperation of the rolling plate 12 and the abutment plate 14, so that the raw materials are crushed into powder and fall to the bottom of the shell 1 through the driven gear 16, and there is no need to recycle and reprocess the raw materials with larger particles after screening, which saves time and effort.

[0048] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can easily think of various equivalent modifications or replacements within the technical scope disclosed by the present invention, and these modifications or replacements should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention shall be based on the protection scope of the claims.

Claims

1. A negative electrode material crushing and screening device, comprising a housing (1), a crushing mechanism and a screening mechanism arranged in the housing (1), characterized in that: The pulverizing mechanism comprises a pulverizing assembly and a first driving assembly, wherein the first driving assembly is used to drive the pulverizing mechanism to rotate and preliminarily pulverize the negative electrode material; The pulverizing assembly comprises a first pulverizing roller (4) and a second pulverizing roller (5), wherein the first pulverizing roller (4) and the second pulverizing roller (5) are meshedly connected, and a central axis is fixedly inserted in the center of the first pulverizing roller (4) and the second pulverizing roller (5), and the first pulverizing roller (4) and the second pulverizing roller (5) are rotatably mounted on the inner wall of the upper half of the housing (1) via the central axis; The screening mechanism comprises a screening component, a rolling component, and a second driving component, wherein the second driving component drives the rolling component to roll and crush the negative electrode material left on the screening component again; The screening assembly comprises two driven gears (16), two abutment plates (14) and a first screen (13), wherein the two driven gears (16) are symmetrically fixedly mounted on the inner wall of the lower half of the housing (1), the two abutment plates (14) are respectively fixedly mounted on the side walls of the driven gears (16), and the first screen (13) is fixedly mounted on the upper end surfaces of the two abutment plates (14), and the first screen (13) is in a herringbone shape; The rolling assembly comprises two rolling plates (12), a fixed plate (10) and a plurality of guide rods (15); the two rolling plates (12) are respectively arranged on the opposite sides of two abutment plates (14); the rolling plates (12) are slidably connected to the upper end surface of the driven gear (16); the plurality of guide rods (15) are respectively fixedly mounted on the side walls of the two rolling plates (12) at equal intervals; the ends of the plurality of guide rods (15) facing away from the rolling plates (12) all penetrate the side wall of the shell (1) and are fixedly mounted on the same fixed plate (10).

2. The negative electrode material crushing and screening device according to claim 1, characterized in that: The first driving assembly comprises a first damping plate (2) and a first servo motor (3); the first damping plate (2) is fixedly mounted on the side wall of the housing (1); the first servo motor (3) is fixedly mounted on the upper end surface of the first damping plate (2); and the output end of the first servo motor (3) passes through the side wall of the housing (1) and is fixedly connected to one end of the central axis on the first crushing roller (4).

3. The negative electrode material crushing and screening device according to claim 1, characterized in that: The second driving assembly comprises a second servo motor (7), a driving gear (17) and two driven gears (16); the second servo motor (7) is fixedly mounted on the side wall of the lower half of the housing (1) via a second damping plate (6); the output end of the second servo motor (7) is fixedly mounted at the center of the driving gear (17); the two driven gears (16) are symmetrically arranged on both sides of the driving gear (17) and mesh with the driving gear (17).

4. The negative electrode material crushing and screening device according to claim 3, characterized in that: The two driven gears (16) are rotatably connected to the side wall of the housing (1) via a limit shaft (20); a connecting rod (18) is fixedly mounted on the side wall of the driven gear (16); the other end of the connecting rod (18) is rotatably connected to a fixing sleeve (19); a linking rod (8) is fixedly mounted on the side wall of the fixing sleeve (19); the other end of the linking rod (8) is rotatably connected to a fixing plate (10) via a rotating shaft (9).

5. The negative electrode material crushing and screening device according to claim 1, characterized in that: The upper end surface of the shell (1) is provided with a material guide plate (21), and the center of the material guide plate (21) is provided with a material guide port (22), and the material guide port (22) is directly opposite to the meshing position of the No. 1 crushing roller (4) and the No. 2 crushing roller (5), and the material guide port (22) is used to guide the material between the No. 1 crushing roller (4) and the No. 2 crushing roller (5).

6. The negative electrode material crushing and screening device according to claim 1, characterized in that: The specifications of the rolling plate (12) and the abutment plate (14) are the same.

7. The negative electrode material crushing and screening device according to claim 1, characterized in that: A plurality of sliding holes matching the guide rods (15) are provided at equal intervals on the side wall of the housing (1), and the guide rods (15) are slidably connected in the sliding holes.

8. The negative electrode material crushing and screening device according to claim 1, characterized in that: The transmission ratio between the driving gear (17) and the driven gear (16) is 3:

1.

9. The negative electrode material crushing and screening device according to claim 1, characterized in that: The No. 1 screen (13) is located directly below the meshing point between the No. 1 crushing roller (4) and the No. 2 crushing roller (5).

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