Lithium ion battery positive electrode material firing product pulverizer

Abstract

The utility model discloses a lithium ion battery positive electrode material firing product crusher, which relates to the technical field of lithium ion battery electrode material treatment and comprises a crusher shell, a feeding device fixedly mounted at the top of the crusher shell, a multi-stage crushing device embedded in an inner cavity of the crusher shell, and a vibrating screen device, the secondary grinding device is arranged in an inner cavity of the vibration screening device, and the discharging device is arranged on one side of the crusher shell. According to the utility model, raw materials are crushed step by step through the multi-stage crushing device, so that the blockage of the device caused by overlarge feeding quantity is avoided, the crushing effect is good, and the standard-reaching rate of products is high; through the multi-stage crushing device and the vibrating screen device, repeated work doing on qualified raw materials is avoided, and the machining speed is increased while the mechanical efficiency is improved; and through the secondary grinding device and the discharging device, the quality is guaranteed, meanwhile, the discharging speed is increased, flying and attached powder in the device is sucked into a material collecting box along with products through an exhaust fan, waste is avoided, and meanwhile, cleanliness of an inner cavity of the device is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium battery electrode material processing, in particular to a pulverizer for burning products of lithium ion battery positive electrode materials. Background Art

[0002] Lithium-ion batteries are secondary battery systems that use two different lithium-intercalating compounds that can reversibly insert and remove lithium ions as the positive and negative electrodes of the battery respectively. During charging, lithium ions are removed from the lattice of the positive electrode material, and are inserted into the lattice of the negative electrode material after passing through the electrolyte; during discharging, lithium ions are removed from the lattice of the negative electrode material, and are inserted into the lattice of the positive electrode material after passing through the electrolyte. The difference in potential between the positive and negative electrode materials relative to metallic lithium when inserting and removing lithium ions is the operating voltage of the battery. During the production process of lithium-ion batteries, they need to be sintered and then crushed so that they can meet commercial needs.

[0003] For example, a lithium-ion battery positive electrode material combustion product crusher with Chinese patent publication number: CN213824993U includes a grinding cylinder body, a motor is fixedly connected to the top of the grinding cylinder body, a central rotating shaft is fixedly connected to the output end of the motor, the central rotating shaft passes through the outer surface of the grinding cylinder body and is fixedly connected to a grinding body, and the grinding body is a truncated cone.

[0004] In order to solve the problem of dust easily generated during the crushing and screening process, the existing technology adopts an integral crushing container and does not perform material transfer for processing. However, there are still problems such as no vibration screen or other devices to help speed up, no multi-stage crushing and screening devices, and the crushed powder is easy to remain on the inner wall of the container, which leads to the raw materials easily clogging the device and slow discharge. The first-level crushing device will repeatedly crush the qualified raw materials to reduce efficiency, and the raw materials attached to the inner wall are difficult to clean. Utility Model Content

[0005] The utility model aims to provide a pulverizer for the calcination products of positive electrode materials of lithium-ion batteries to solve the problems raised in the above-mentioned background technology.

[0006] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0007] A lithium-ion battery positive electrode material burning product grinder, comprising a grinder housing, a feeding device fixedly mounted on the top of the grinder housing, a multi-stage grinding device arranged in the inner cavity of the grinder housing, a vibrating screen device arranged in the inner cavity of the grinder housing, a secondary grinding device arranged in the inner cavity of the vibrating screen device, and a discharging device arranged on one side of the grinder housing;

[0008] The vibrating screen device comprises a vibrating screen motor, a vibrating screen cam, a vibrating screen box and a screen mesh, and the vibrating screen motor is symmetrically arranged on both sides of the outer surface of the crusher housing;

[0009] The secondary grinding device comprises a grinding disc and a spring, and the grinding disc is arranged in the inner cavity of the vibrating screen box;

[0010] The discharging device comprises a material receiving plate, a material discharging pipe, a material collecting box, an exhaust fan and an ash filtering net, and the material receiving plate is fixedly installed on the inner wall of the pulverizer casing.

[0011] A further improvement of the technical solution of the utility model is that: a motor platform structure is provided on both sides of the outer surface of the pulverizer housing;

[0012] By adopting the above technical solution, a support is arranged at the bottom of the pulverizer casing to lift the pulverizer casing off the ground to prevent the inside from getting damp.

[0013] A further improvement of the technical solution of the utility model is that: the feeding device includes a feeding plate and a protective upper cover, the feeding plate is fixedly mounted on one side of the top of the crusher housing, the protective upper cover is fixedly mounted on the top of the crusher housing, a through feeding groove is opened on one side of the protective upper cover, and the feeding plate is embedded in the feeding groove of the protective upper cover;

[0014] By adopting the above technical solution, the raw materials can be directly poured along the slope of the feed plate, and the raw materials can directly slide into the primary crushing wall.

[0015] A further improvement of the technical solution of the utility model is that the multi-stage crushing device includes a crushing motor, a crushing shaft, a primary crushing wall, a primary crushing roller, a secondary crushing wall, a secondary crushing roller, a tertiary crushing wall and a tertiary crushing roller, the crushing motor is fixedly installed at the bottom of the inner cavity of the crusher casing, the bottom of the crushing shaft is detachably fixedly connected to the output end of the crushing motor, the primary crushing wall, the secondary crushing wall and the tertiary crushing wall are fixedly installed in the inner wall of the crusher casing from top to bottom, the primary crushing wall is located directly below the feed plate, the primary crushing roller, the secondary crushing roller and the tertiary crushing roller are fixedly sleeved on the outer surface of the crushing shaft from top to bottom, the outer teeth of the primary crushing roller are meshed with the inner teeth of the primary crushing wall, the outer teeth of the secondary crushing roller are meshed with the inner teeth of the secondary crushing wall, and the outer teeth of the tertiary crushing roller are meshed with the inner teeth of the tertiary crushing wall;

[0016] By adopting the above technical scheme, the number of teeth and the tooth width of the crushing wall and the crushing roller at each level are different, and the raw materials are gradually crushed from large pieces to small pieces from top to bottom. The raw materials of qualified size fall directly into the vibrating screen box without the need for multi-stage crushing device.

[0017] The further improvement of the technical solution of the utility model is that: the vibrating screen motor is symmetrically fixedly installed on the motor table structure of the crusher casing, one end of the vibrating screen cam penetrates the inner wall of the crusher casing and is detachably fixedly connected to the output end of the vibrating screen motor, the outer surface of the vibrating screen box is symmetrically provided with vibrating screen shaft structures on both sides, the vibrating screen shaft structure is embedded and installed in the inner wall of the crusher casing, the bottom of the vibrating screen box is provided with a shaft sleeve structure, the shaft sleeve structure is sleeved on the outer surface of the crushing shaft, the screen is embedded and installed at the bottom of the vibrating screen box, the outer surface of the other end of the vibrating screen cam contacts the bottom of the vibrating screen box, and the vibrating screen box is located directly below the third-level crushing wall;

[0018] By adopting the above technical solution, the vibrating screen motor drives the vibrating screen cam to rotate, and the vibrating screen cam periodically lifts up the two ends of the vibrating screen box to make the screen screen the raw materials.

[0019] The further improvement of the technical solution of the utility model is that: the grinding disc and the spring are sleeved on the outer surface of the shaft sleeve structure of the vibrating screen box from top to bottom, the top of the spring contacts the bottom of the grinding disc, and the bottom of the spring contacts the top of the vibrating screen box;

[0020] By adopting the above technical scheme, unqualified raw materials are retained in the vibrating screen box, and multiple groups of grinding columns are arranged at equal intervals at the bottom of the grinding disc. As the vibrating screen box swings up and down, the unqualified raw materials are ground to the qualified size. The spring acts as a buffer to avoid direct collision between the grinding disc and the screen.

[0021] The further improvement of the technical solution of the utility model is that: the material receiving plate is arranged just below the vibrating screen box, the material receiving plate is arranged just above the crushing motor, a through discharge hole is opened on the top of the material receiving plate, one end of the discharge pipe passes through the outer surface of the crusher housing and is embedded in the discharge hole of the material receiving plate, the bottom of the discharge pipe is embedded in the top of the collection box, the collection box is arranged on one side of the crusher housing, the other end of the discharge pipe is fixedly connected to one end face of the exhaust fan, the exhaust fan is fixedly installed on the top of the collection box, and the ash filter is embedded in the inner wall of the exhaust fan;

[0022] By adopting the above technical solution, the exhaust fan not only helps to discharge the materials, but also sucks away the flying dust in the inner cavity of the crusher casing. The circular structure of the discharge pipe prevents the raw materials from being sucked into the exhaust fan.

[0023] Due to the adoption of the above technical solution, the utility model has achieved the following technical progress compared with the prior art:

[0024] The utility model provides a lithium-ion battery positive electrode material burning product crusher, which crushes and screens raw materials in steps through a multi-stage crushing device and a vibrating screening device, thereby avoiding device blockage caused by excessive feed amount, and has good crushing effect and high product compliance rate.

[0025] The utility model provides a lithium ion battery positive electrode material burning product crusher, which avoids repeated work on qualified raw materials through a multi-stage crushing device and a vibrating screening device, improves mechanical efficiency and accelerates processing speed.

[0026] The utility model provides a lithium-ion battery positive electrode material burning product crusher, which improves the discharge speed while ensuring the quality through a secondary grinding device and a discharge device, and an exhaust fan sucks the flying and attached powder inside the device into a collection box along with the product, thereby avoiding waste and ensuring the cleanliness of the inner cavity of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the structure of the utility model;

[0028] Figure 2 It is a half-section view of the utility model;

[0029] Figure 3 It is a schematic diagram of the structure of the multi-stage crushing device of the utility model;

[0030] Figure 4 This is a schematic diagram of the structure of the vibrating screen device of the utility model;

[0031] Figure 5 This is a schematic structural diagram of the secondary grinding device of the utility model.

[0032] In the figure: 1. crusher casing; 2. feeding device; 3. multi-stage crushing device; 4. vibrating screen device; 5. secondary grinding device; 6. discharging device; 21. feeding plate; 22. protective cover; 31. crushing motor; 32. crushing shaft; 33. primary crushing wall; 34. primary crushing roller; 35. secondary crushing wall; 36. secondary crushing roller; 37. tertiary crushing wall; 38. tertiary crushing roller; 41. vibrating screen motor; 42. vibrating screen cam; 43. vibrating screen box; 44. screen; 51. grinding disc; 52. spring; 61. receiving plate; 62. discharging pipe; 63. collecting box; 64. exhaust fan; 65. ash filter. DETAILED DESCRIPTION

[0033] The present invention is further described in detail below in conjunction with the embodiments: Example

[0034] like Figure 1-5 As shown, the utility model provides a lithium-ion battery positive electrode material burning product grinder, comprising a grinder casing 1, a motor platform structure is arranged on both sides of the outer surface of the grinder casing 1, and a support is arranged at the bottom of the grinder casing 1 to lift the grinder casing 1 off the ground to prevent the inside from getting wet;

[0035] A feed device 2 is fixedly installed on the top of the crusher housing 1. The feed device 2 includes a feed plate 21 and a protective upper cover 22. The feed plate 21 is fixedly installed on one side of the top of the crusher housing 1. The protective upper cover 22 is fixedly installed on the top of the crusher housing 1. A through feed groove is opened on one side of the protective upper cover 22. The feed plate 21 is embedded in the feed groove of the protective upper cover 22. The raw materials can be directly poured along the slope of the feed plate 21, and the raw materials directly slide into the primary crushing wall 33.

[0036] A multi-stage crushing device 3 is arranged in the inner cavity of the crusher casing 1, and the multi-stage crushing device 3 includes a crushing motor 31, a crushing shaft 32, a primary crushing wall 33, a primary crushing roller 34, a secondary crushing wall 35, a secondary crushing roller 36, a tertiary crushing wall 37 and a tertiary crushing roller 38. The crushing motor 31 is fixedly installed at the bottom of the inner cavity of the crusher casing 1, and the bottom of the crushing shaft 32 is detachably fixedly connected to the output end of the crushing motor 31. The primary crushing wall 33, the secondary crushing wall 35 and the tertiary crushing wall 37 are fixedly installed in the inner wall of the crusher casing 1 from top to bottom, and the primary crushing wall 33 is located on the feed plate. Directly below 21, the primary crushing roller 34, the secondary crushing roller 36, and the tertiary crushing roller 38 are fixedly sleeved on the outer surface of the crushing shaft 32 from top to bottom, the outer teeth of the primary crushing roller 34 are meshed with the inner teeth of the primary crushing wall 33, the outer teeth of the secondary crushing roller 36 are meshed with the inner teeth of the secondary crushing wall 35, and the outer teeth of the tertiary crushing roller 38 are meshed with the inner teeth of the tertiary crushing wall 37. The number of teeth and the tooth width of the crushing walls and crushing rollers at each level are different, and the raw materials are gradually crushed from large pieces to small pieces from top to bottom, and the raw materials of qualified size fall directly into the vibrating screen box 43 without the need for crushing by the multi-stage crushing device 3. Example

[0037] like Figure 1-5 As shown, on the basis of Example 1, the utility model provides a technical solution: preferably, a vibrating screen device 4 is arranged in the inner cavity of the crusher casing 1, and the vibrating screen device 4 includes a vibrating screen motor 41, a vibrating screen cam 42, a vibrating screen box 43 and a screen 44. The vibrating screen motor 41 is symmetrically arranged on both sides of the outer surface of the crusher casing 1, and the vibrating screen motor 41 is symmetrically fixedly installed on the motor table structure of the crusher casing 1. One end of the vibrating screen cam 42 penetrates the inner wall of the crusher casing 1 and is detachably fixedly connected to the output end of the vibrating screen motor 41. The vibrating screen box 43 is A vibrating screen shaft structure is symmetrically arranged on both sides of the outer surface, and the vibrating screen shaft structure is embedded in the inner wall of the crusher housing 1. A shaft sleeve structure is arranged at the bottom of the vibrating screen box 43, and the shaft sleeve structure is sleeved on the outer surface of the crushing shaft 32. The screen 44 is embedded in the bottom of the vibrating screen box 43. The outer surface of the other end of the vibrating screen cam 42 contacts the bottom of the vibrating screen box 43. The vibrating screen box 43 is located directly below the third-level crushing wall 37. The vibrating screen motor 41 drives the vibrating screen cam 42 to rotate, and the vibrating screen cam 42 periodically lifts up the two ends of the vibrating screen box 43, so that the screen 44 screens the raw materials.

[0038] A secondary grinding device 5 is arranged in the inner cavity of the vibrating screen device 4. The secondary grinding device 5 includes a grinding disc 51 and a spring 52. The grinding disc 51 is arranged in the inner cavity of the vibrating screen box 43. The grinding disc 51 and the spring 52 are sleeved on the outer surface of the shaft sleeve structure of the vibrating screen box 43 from top to bottom. The top of the spring 52 contacts the bottom of the grinding disc 51, and the bottom of the spring 52 contacts the top of the vibrating screen box 43. Unqualified raw materials remain in the vibrating screen box 43. A plurality of groups of grinding columns are arranged at equal intervals on the bottom of the grinding disc 51. As the vibrating screen box 43 shakes up and down, the unqualified raw materials are ground to a qualified size. The spring 52 acts as a buffer to prevent the grinding disc 51 from directly colliding with the screen 44. Example

[0039] like Figure 1-5 As shown, on the basis of Embodiment 1-2, the utility model provides a technical solution: preferably, a discharging device 6 is provided on one side of the crusher housing 1, and the discharging device 6 includes a receiving plate 61, a discharging pipe 62, a collecting box 63, an exhaust fan 64 and an ash filter 65, the receiving plate 61 is fixedly mounted on the inner wall of the crusher housing 1, the receiving plate 61 is arranged directly below the vibration screen box 43, the receiving plate 61 is arranged directly above the crushing motor 31, a through discharging hole is opened on the top of the receiving plate 61, and one end of the discharging pipe 62 passes through the crusher housing 1 The outer surface of the discharge hole 61 is embedded in the material receiving plate 61, the bottom of the discharge pipe 62 is embedded in the top of the collection box 63, the collection box 63 is arranged on one side of the crusher casing 1, the other end of the discharge pipe 62 is fixedly connected to one end face of the exhaust fan 64, the exhaust fan 64 is fixedly installed on the top of the collection box 63, the dust filter 65 is embedded in the inner wall of the exhaust fan 64, the exhaust fan 64 helps the discharge, and also sucks away the flying dust in the inner cavity of the crusher casing 1, the discharge pipe 62 has a circular structure to prevent the raw materials from being sucked into the exhaust fan 64.

[0040] The working principle of the lithium-ion battery positive electrode material combustion product crusher is described in detail below.

[0041] like Figure 1-5As shown, the raw material is put into the inner cavity of the pulverizer housing 1 along the feed plate 21, and the raw material enters between the primary pulverizing wall 33 and the primary pulverizing roller 34. The pulverizing motor 31 is started to drive the pulverizing shaft 32 to rotate, and the pulverizing shaft 32 drives the primary pulverizing roller 34, the secondary pulverizing roller 36, and the tertiary pulverizing roller 38 to rotate, and cooperates with the primary pulverizing wall 33, the secondary pulverizing wall 35, and the tertiary pulverizing wall 37 to pulverize the raw material. The pulverized raw material falls into the vibrating screen box 43, and the vibrating screen motor 41 is started to drive the vibrating screen cam 42 to rotate. The vibrating screen cam 42 periodically lifts the two ends of the vibrating screen box 43 to make the screen 44 vibrate to screen the raw material, and unqualified raw material remains in the vibrating screen box 43. The grinding disc 51 vibrates with the up and down shaking of the vibrating screen box 43 to grind the unqualified raw material to a qualified size; the qualified raw material falls onto the receiving plate 61, and the exhaust fan 64 works to suck the raw material into the discharge pipe 62 and falls into the collecting box 63.

[0042] The above generally describes the present invention in detail, but it is obvious to a person skilled in the art that some modifications or improvements can be made to the present invention. Therefore, modifications or improvements that do not depart from the spirit of the present invention are within the scope of protection of the present invention.

Claims

1. A pulverizer for the calcined product of positive electrode materials for lithium-ion batteries, comprising a pulverizer housing (1), a feeding device (2) fixedly mounted on the top of the pulverizer housing (1), a multi-stage pulverizing device (3) arranged in the inner cavity of the pulverizer housing (1), characterized in that: A vibrating screen device (4) is arranged in the inner cavity of the pulverizer housing (1), a secondary grinding device (5) is arranged in the inner cavity of the vibrating screen device (4), and a discharging device (6) is arranged on one side of the pulverizer housing (1); The vibrating screen device (4) comprises a vibrating screen motor (41), a vibrating screen cam (42), a vibrating screen box (43) and a screen mesh (44); the vibrating screen motor (41) is symmetrically arranged on both sides of the outer surface of the pulverizer housing (1); The secondary grinding device (5) comprises a grinding disc (51) and a spring (52), wherein the grinding disc (51) is arranged in the inner cavity of the vibrating screen box (43); The material discharging device (6) comprises a material receiving plate (61), a material discharging pipe (62), a material collecting box (63), an exhaust fan (64) and an ash filter (65); the material receiving plate (61) is fixedly mounted on the inner wall of the pulverizer housing (1).

2. A lithium-ion battery positive electrode material calcination product crusher according to claim 1, characterized in that: Motor platform structures are provided on both sides of the outer surface of the pulverizer casing (1).

3. A lithium-ion battery positive electrode material calcination product crusher according to claim 2, characterized in that: The feeding device (2) comprises a feeding plate (21) and a protective upper cover (22); the feeding plate (21) is fixedly mounted on one side of the top of the pulverizer housing (1); the protective upper cover (22) is fixedly mounted on the top of the pulverizer housing (1); a through feeding groove is provided on one side surface of the protective upper cover (22); the feeding plate (21) is embedded in the feeding groove of the protective upper cover (22).

4. A lithium-ion battery positive electrode material burning product crusher according to claim 3, characterized in that: The multi-stage pulverizing device (3) comprises a pulverizing motor (31), a pulverizing shaft (32), a primary pulverizing wall (33), a primary pulverizing roller (34), a secondary pulverizing wall (35), a secondary pulverizing roller (36), a tertiary pulverizing wall (37) and a tertiary pulverizing roller (38), wherein the pulverizing motor (31) is fixedly mounted at the bottom of the inner cavity of the pulverizer housing (1), the bottom of the pulverizing shaft (32) is detachably fixedly connected to the output end of the pulverizing motor (31), and the primary pulverizing wall (33), the secondary pulverizing wall (35) and the tertiary pulverizing wall (37) are fixedly mounted from top to bottom. The crushing roller (34), the second crushing roller (36), and the third crushing roller (38) are fixedly mounted on the outer surface of the crushing shaft (32) from top to bottom, the outer teeth of the first crushing roller (34) mesh with the inner teeth of the first crushing wall (33), the outer teeth of the second crushing roller (36) mesh with the inner teeth of the second crushing wall (35), and the outer teeth of the third crushing roller (38) mesh with the inner teeth of the third crushing wall (37).

5. A lithium-ion battery positive electrode material burning product crusher according to claim 4, characterized in that: The vibrating screen motor (41) is symmetrically fixedly mounted on the motor table structure of the pulverizer casing (1); one end of the vibrating screen cam (42) penetrates the inner wall of the pulverizer casing (1) and is detachably fixedly connected to the output end of the vibrating screen motor (41); vibrating screen shaft structures are symmetrically arranged on both sides of the outer surface of the vibrating screen box (43); the vibrating screen shaft structures are embedded in the inner wall of the pulverizer casing (1); a shaft sleeve structure is arranged at the bottom of the vibrating screen box (43); the shaft sleeve structure is sleeved on the outer surface of the pulverizing shaft (32); the screen (44) is embedded in the bottom of the vibrating screen box (43); the outer surface of the other end of the vibrating screen cam (42) contacts the bottom of the vibrating screen box (43); and the vibrating screen box (43) is located directly below the third-level pulverizing wall (37).

6. A lithium-ion battery positive electrode material burning product crusher according to claim 5, characterized in that: The grinding disc (51) and the spring (52) are sleeved from top to bottom on the outer surface of the shaft sleeve structure of the vibration screen box (43), the top of the spring (52) contacts the bottom of the grinding disc (51), and the bottom of the spring (52) contacts the top of the vibration screen box (43).

7. A lithium-ion battery positive electrode material burning product crusher according to claim 5, characterized in that: The material receiving plate (61) is arranged directly below the vibrating screen box (43), the material receiving plate (61) is arranged directly above the pulverizing motor (31), a through discharge hole is opened on the top of the material receiving plate (61), one end of the discharge pipe (62) passes through the outer surface of the pulverizer housing (1) and is embedded in the discharge hole of the material receiving plate (61), the bottom of the discharge pipe (62) is embedded in the top of the collection box (63), the collection box (63) is arranged on one side of the pulverizer housing (1), the other end of the discharge pipe (62) is fixedly connected to one end face of the exhaust fan (64), the exhaust fan (64) is fixedly installed on the top of the collection box (63), and the ash filter (65) is embedded in the inner wall of the exhaust fan (64).

Images