Coarse crushing device for lithium ion carbonized negative electrode material
By using a reverse-rotating coarse crushing tool and dust removal mechanism in the lithium-ion carbonized negative electrode material crushing device, the dust is sucked into the buffer conveying chamber, which solves the problems of low dust recovery rate and the harm of dust to health during the crushing process, and realizes the material Efficient crushing and safe production.
Patent Information
- Application Number
- CN202420991829.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-09
- Publication Date
- 2024-12-27
- Estimated Expiration
- 2034-05-09
AI Technical Summary
The existing lithium-ion carbonized negative electrode material crushing device cannot effectively recover dust during the crushing process, resulting in waste of materials and reduced recovery rate. At the same time, the dust generated during the crushing process is harmful to the health of the staff, and the existing dust removal device will cause equipment blockage and Inefficient production efficiency.
A lithium-ion carbonized negative electrode material coarse crushing device is designed, and a pair of first coarse crushing tools and second coarse crushing tools are used to rotate in the feed silo. Combined with a dust removal mechanism, dust is sucked in through the induction fan and the dust removal silo. Put it in the cache conveyor compartment, mix it with the crushed material to avoid waste, and prevent material clogging through the air hammer.
The effective recycling of dust and mixing of materials during the crushing process is achieved, which avoids material waste, improves the crushing effect and production efficiency, and reduces the health hazards of equipment blockage and dust.
Smart Images
Figure CN222240622U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of material crushing, in particular to a coarse crushing device for lithium ion carbonized negative electrode materials. Background Art
[0002] With the development of battery technology, the requirements for the rate performance of negative electrode materials are getting higher and higher. How to improve the rate performance of graphite negative electrode materials has become a hot topic in industry research. In the production and processing of lithium-ion negative electrode materials, the coating and carbonization process is an important link in improving the rate performance of negative electrode materials. However, after the graphitized material is coated and carbonized, agglomeration will inevitably occur, which will greatly reduce the screening yield of the finished product and increase the occurrence of blockage in the screening process. This will not only cause a large amount of material accumulation, damage to the equipment, and affect the product quality, but also cause material waste, increase the cost of manual clearing and greatly reduce production efficiency. Therefore, it is necessary to crush it and screen it. Most of the existing crushing devices do not have a dust removal function. The dust generated in the process of crushing the material is dispersed in the air, which will affect the health of the staff. Most of the crushing devices with dust removal function directly suck the dust into the waste barrel during the crushing process. The dust generated after the lithium-ion carbonized negative electrode material is crushed can be recycled. The use of existing crushing devices will cause material waste and reduce the recovery rate. Utility Model Content
[0003] In order to solve the above-mentioned defects of the prior art, the present application provides a coarse crushing device for lithium-ion carbonized negative electrode materials, which can suck dust into a dust removal bin during the crushing process, and then put the sucked dust into a buffer conveying bin through a discharge pipe under the dust removal bin to mix with the crushed material to avoid material waste.
[0004] In order to achieve the above purpose, the utility model adopts the following technologies:
[0005] A lithium ion carbonized negative electrode material coarse crushing device, characterized by comprising:
[0006] A pair of first coarse crushing cutters are arranged in a feed bin for rotation in opposite directions, and the bottom of the feed bin is connected to a buffer conveying bin;
[0007] The dust removal mechanism includes an induced draft fan and a dust removal bin. The dust removal bin is connected to the feed bin through a dust suction pipe, and one end of the dust suction pipe connected to the feed bin is below the first coarse crushing tool. The suction end of the induced draft fan is connected to the dust removal bin. The bottom of the dust removal bin is connected to the cache conveying bin through a discharge pipe, and the height of the bottom of the dust removal bin is higher than the height of one end of the discharge pipe connected to the cache conveying bin.
[0008] Furthermore, a pair of second coarse crushing cutters are provided below the first coarse crushing cutter, and the second coarse crushing cutters are arranged in the feed bin for reverse rotation.
[0009] Furthermore, an openable and closable door is provided on one side of the feed bin, and the bottoms of the feed bin and the dust removal bin are both conical.
[0010] Furthermore, an air hammer is provided on the top of the buffer conveying bin to vibrate the materials entering the buffer conveying bin.
[0011] Furthermore, the first coarse crushing tool includes a group of blades, a driving motor, and a roller. The group of blades is connected to the roller. The output shaft of the driving motor is connected to the roller, and the roller is rotatably connected to the feed bin.
[0012] Furthermore, the bottom of the cache delivery bin is connected to a delivery pipeline.
[0013] The beneficial effects of the utility model are:
[0014] 1. The dust can be sucked into the dust removal bin during the crushing process, and then the sucked dust is put into the buffer conveying bin and mixed with the crushed material through the discharge pipe under the dust removal bin to avoid material waste.
[0015] 2. The second coarse crushing tool can further crush the material and improve the crushing effect.
[0016] 3. The bottom of the feed bin is set to be conical, combined with the vibration of the air hammer, which can avoid blockage when discharging materials in the buffer conveying bin. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 This is an overall structural diagram of the device according to an embodiment of the present application.
[0018] Figure 2 This is an overall structural diagram of the first coarse crushing tool in the device of the embodiment of the present application.
[0019] Figure numerals: first coarse crushing tool -1, feeding bin -2, buffer conveying bin -3, induced draft fan -4, second coarse crushing tool -5, blade -101, driving motor -102, roller -103, openable door -201, air hammer -301, conveying pipe -302, dust removal bin -401, dust suction pipe -402, unloading pipe -403. DETAILED DESCRIPTION
[0020] In order to make the purpose, technical solutions and advantages of the embodiments of the utility model clearer, the implementation methods of the utility model are described in detail below in conjunction with the accompanying drawings, but the embodiments described in the utility model are only part of the embodiments of the utility model, rather than all the embodiments.
[0021] The present application provides a lithium ion carbonized negative electrode material coarse crushing device, such as Figure 1 As shown, it includes a first coarse crushing tool 1, a feed bin 2, a buffer conveying bin 3, a dust removal mechanism, etc.
[0022] Specifically, the first coarse crushing cutter 1 is a pair, which rotates in opposite directions and is arranged in the feed bin 2. The bottom of the feed bin 2 is connected to the buffer conveying bin 3. The dust removal mechanism includes an induced draft fan 4 and a dust removal bin 401. The dust removal bin 401 is connected to the feed bin 2 through a dust suction pipe 402, and the end of the dust suction pipe 402 connected to the feed bin 2 is below the first coarse crushing cutter 1. The suction end of the induced draft fan 4 is connected to the dust removal bin 401. The bottom of the dust removal bin 401 is connected to the buffer conveying bin 3 through a material discharge pipe 403, and the height of the bottom of the dust removal bin 401 is higher than the height of the end of the material discharge pipe 403 connected to the buffer conveying bin 3. Specifically, the bottom of the buffer conveying bin 3 is connected to a conveying pipe 302, and the conveying pipe 302 can be used to connect with the subsequent transfer bin to facilitate the lowering of materials.
[0023] During actual use, the lithium ion carbonized negative electrode material to be crushed is placed from the top of the feed bin 2, crushed by a pair of first coarse crushing tools 1, and then falls downward into the buffer conveying bin 3. During this process, the induced draft fan 4 can be started to suck the dust generated during the crushing process into the dust removal bin 401 through the dust suction pipe 402. After the crushing is completed, the dust collected in the dust removal bin 401 is placed in the buffer conveying bin 3 through the discharge pipe, so as to improve the yield of the subsequent crushed material.
[0024] For details, see Figure 2 The first coarse crushing tool 1 includes a set of blades 101, a driving motor 102, and a roller 103. The set of blades 101 is connected to the roller 103. The output shaft of the driving motor 102 is connected to the roller 103. The roller 103 is rotatably connected to the feed bin 2. By controlling the two driving motors 102 to rotate in opposite directions, the two sets of blades 101 can be rotated in opposite directions to crush the materials entering between the two sets of blades 101.
[0025] Preferably, see Figure 1 A pair of second coarse crushing cutters 5 are provided below the first coarse crushing cutter 1, and the second coarse crushing cutters 5 are arranged in the feed bin 2 for reverse rotation. The second coarse crushing cutters 5 can further crush the material to improve the crushing effect.
[0026] For details, see Figure 1 The bottoms of the feed bin 2 and the dust removal bin 401 can be set to be conical, so that the materials can fall out of the feed bin 2 and the dust removal bin 401. A pneumatic hammer 301 is provided on the top of the buffer conveying bin 3 to vibrate the materials entering the buffer conveying bin 3 to prevent blockage during the material discharge process. More specifically, a retractable door 201 is provided on one side of the feed bin 2. When the inside of the feed bin 2 needs to be cleaned, the retractable door 201 can be opened for cleaning.
[0027] The above are only some of the embodiments listed in this application and are not intended to limit this application.
Claims
1. A lithium ion carbonized negative electrode material coarse crushing device, characterized in that: include: A pair of first coarse crushing cutters (1) are arranged in a feed bin (2) for rotation in opposite directions, and the bottom of the feed bin (2) is connected to a buffer conveying bin (3); The dust removal mechanism comprises an induced draft fan (4) and a dust removal bin (401); the dust removal bin (401) is connected to the feed bin (2) via a dust suction pipe (402); one end of the dust suction pipe (402) connected to the feed bin (2) is located below the first coarse crushing tool (1); the suction end of the induced draft fan (4) is connected to the dust removal bin (401); the bottom of the dust removal bin (401) is connected to the buffer conveying bin (3) via a discharge pipe (403); and the height of the bottom of the dust removal bin (401) is higher than the height of one end of the discharge pipe (403) connected to the buffer conveying bin (3).
2. The device for crushing lithium ion carbonized negative electrode materials according to claim 1, characterized in that: A pair of second coarse crushing cutters (5) are provided below the first coarse crushing cutter (1), and the second coarse crushing cutters (5) are arranged in the feed bin (2) for rotation in the opposite direction.
3. The device for crushing lithium ion carbonized negative electrode materials according to claim 1, characterized in that: A closable door (201) is provided on one side of the feed bin (2).
4. The device for crushing lithium ion carbonized negative electrode materials according to claim 1, characterized in that: The bottoms of the feed bin (2) and the dust removal bin (401) are both conical.
5. The device for coarsely crushing lithium ion carbonized negative electrode materials according to claim 1, characterized in that: A pneumatic hammer (301) is provided on the top of the buffer conveying bin (3) for vibrating the material entering the buffer conveying bin (3).
6. The device for crushing lithium ion carbonized negative electrode materials according to claim 1, characterized in that: The first coarse crushing tool (1) comprises a set of blades (101), a drive motor (102), and a roller (103); the set of blades (101) is connected to the roller (103); the output shaft of the drive motor (102) is connected to the roller (103); and the roller (103) is rotatably connected to the feed bin (2).
7. The device for crushing lithium ion carbonized negative electrode materials according to claim 1, characterized in that: The bottom of the buffer transport bin (3) is connected to a transport pipeline (302).