Lithium ion battery negative electrode material grinding device

Abstract

The utility model discloses a lithium ion battery cathode material grinding device, which relates to the technical field of material grinding, and comprises a support frame, the top of the support frame is fixedly connected with a screening mechanism, the top of the screening mechanism is fixedly connected with a feed hopper, the upper end of the inner cavity of the screening mechanism is fixedly connected with a grinding mechanism, and the upper end of the inner cavity of the screening mechanism is fixedly connected with the feed hopper. The bottom of an inner cavity in one end of the screening mechanism is fixedly connected with a backflow mechanism. Through the arrangement of the screening mechanism, after graphite is ground once, the vibration generator drives the screen to vibrate so as to screen the ground graphite, the graphite reaching the required fineness degree is discharged from the discharge port through the screen, and the graphite not reaching the required fineness degree enters the backflow pipe along the backflow port under the flow guide action of the screen, so that the graphite is completely separated from the graphite. And the graphite returns into the grinding cavity again to be ground again until the fineness degree is qualified, so that the situation that the graphite needs to be integrally ground again after primary grinding is avoided, the graphite is more convenient to use, and the grinding efficiency is higher.

Description

Technical Field

[0001] The utility model relates to the technical field of material grinding, in particular to a lithium ion battery negative electrode material grinding device. Background Art

[0002] The main components of lithium battery negative electrode materials are graphite, etc. When producing lithium battery negative electrodes, graphite and other raw materials need to be crushed, ground, screened, mixed, roasted, and formed, so a lithium-ion battery negative electrode material grinding device is needed.

[0003] For example, Chinese patent publication number CN213193974U discloses a lithium-ion battery negative electrode material crushing and grinding device, wherein a feed port is connected to the middle of the upper end of the grinding device shell, and a crushing chamber is provided in the internal connection of the grinding device shell, and a first motor is connected to both sides of the upper end of the grinding device shell; the utility model uses a dividing plate to make the graphene feed to the crushing chamber faster and more accurate, and two groups of crushing devices are provided to crush at the same time, which is more efficient, and the setting of the arc-shaped protrusion enables the graphene to fall onto the crushing device when it is rotated and crushed in the crushing chamber, thereby increasing the contact frequency between the graphene and the crushing blade, thereby improving the crushing effect and efficiency at the same time, and the heat of the graphene is dissipated from the heat dissipation pipe by the wind from the fan, so that the heat of the discharged graphene powder does not drop too high, which is convenient for the next step of processing, and the overall crushing, grinding, and discharging process is smooth and efficient.

[0004] Although the above example can grind the graphite after it is crushed by a crushing knife, a single grinding cannot completely grind the added graphite to the required particle size, resulting in that after the graphite is ground, graphites of different coarsenesses are mixed together and need to be ground again as a whole, which is inconvenient to use. At the same time, the space in the grinding chamber is large, and when the grinding roller applies force to the graphite, the graphite is easy to slide to the side of the grinding roller, which is inconvenient to use. Utility Model Content

[0005] The utility model provides a lithium ion battery negative electrode material grinding device to solve the problems raised in the above 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 negative electrode material grinding device comprises a support frame, a screening mechanism is fixedly connected to the top of the support frame, a feed hopper is fixedly connected to the top of the screening mechanism, a grinding mechanism is fixedly connected to the upper end of the inner cavity of the screening mechanism, and a reflux mechanism is fixedly connected to the bottom of the inner cavity at one end of the screening mechanism.

[0008] A further improvement of the technical solution of the utility model is that the screening mechanism includes a fixed shell, the bottom of the fixed shell is fixedly connected to the top of the support frame, a discharge port is provided on one side of the lower end of the inner cavity of the fixed shell, a stopper is fixedly connected to the bottom of the inner cavity of the fixed shell, a guide plate is fixedly connected to the middle of the inner cavity of the fixed shell, a clamping block is provided below the guide plate, and a screen plate is overlapped on the surface of the clamping block.

[0009] A further improvement of the technical solution of the utility model is that a screen is arranged inside the sieve plate, the bottom of one end of the sieve plate overlaps with the top of the stopper, and a vibration generator is fixedly connected to the surface of the sieve plate.

[0010] A further improvement of the technical solution of the utility model is that the grinding mechanism includes a gear box, one side of the gear box is fixedly connected to the back side of a fixed shell, the back side of the gear box is fixedly connected to a motor 1, the middle part of the motor 1 shaft is fixedly connected to a gear, one end of the motor 1 shaft is fixedly connected to a grinding roller 1, the surface of the gear is meshed with a gear rod, and one end of the gear rod is fixedly connected to a grinding roller 2.

[0011] A further improvement of the technical solution of the utility model is that a grinding bin is fixedly connected to the top of the inner cavity of the fixed shell, a feed port is fixedly connected to the top of the grinding bin, a grinding chamber is arranged inside the grinding bin, the top of the inner cavity of the feed port is connected to the bottom of the inner cavity of the feed hopper, and discharge cavities are opened on both sides of the inner cavity of the grinding chamber.

[0012] A further improvement of the technical solution of the utility model is that: the reflux mechanism includes a reflux pipe, the bottom of the reflux pipe is fixedly connected to the bottom of the inner cavity of the fixed shell, one side of the bottom of the inner cavity of the reflux pipe is fixedly connected with a reflux port, one side of the inner cavity of the reflux port is connected with one side of the inner cavity of the fixed shell, the top of the reflux pipe is fixedly connected with motor 2, the surface of the rotating shaft of motor 2 is fixedly connected with spiral blades, and one side of the top of the inner cavity of the reflux pipe is fixedly connected with a discharge pipe.

[0013] Due to the adoption of the above technical solution, the utility model has achieved the following technical progress compared with the prior art:

[0014] The utility model provides a lithium-ion battery negative electrode material grinding device. Through the setting of a screening mechanism, after single grinding of graphite, a vibration generator drives the screen to vibrate to screen the ground graphite, and the graphite reaching the required fineness passes through the screen and is discharged from a discharge port. The graphite that does not reach the required fineness enters a reflux pipe along a reflux port under the action of the screen guide, so that the graphite returns to the grinding chamber to be ground again until the fineness is qualified, avoiding the need to re-grind the graphite as a whole after the initial grinding, making it easier to use and more efficient in grinding. At the same time, the grinding chamber in the grinding bin is arranged to be highly matched with the shape of the grinding roller, so that when the grinding roller is grinding the graphite, the graphite cannot escape from the pressure applied by the grinding roller, making the grinding efficiency higher and easier to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the main structure of the utility model;

[0016] Figure 2 It is a cross-sectional structural schematic diagram of the utility model;

[0017] Figure 3 This is a schematic diagram of the cross-sectional structure of the grinding chamber of the utility model;

[0018] Figure 4 It is a schematic diagram of the structure of part of the grinding mechanism of the utility model;

[0019] Figure 5 It is a schematic diagram of the structure of the reflux mechanism of the utility model.

[0020] In the figure: 1. support frame; 2. screening mechanism; 21. fixed shell; 22. discharge port; 23. stopper; 24. guide plate; 25. block; 26. sieve plate; 27. sieve; 28. vibration generator; 3. feed hopper; 4. grinding mechanism; 41. gear box; 42. motor one; 43. gear; 44. grinding roller one; 45. gear rod; 46. grinding roller two; 47. grinding bin; 48. feed port; 49. grinding chamber; 410. discharge chamber; 5. reflux mechanism; 51. reflux pipe; 52. reflux port; 53. motor two; 54. spiral blade; 55. discharge pipe. DETAILED DESCRIPTION

[0021] The present invention is further described in detail below in conjunction with the embodiments:

[0022] Example 1

[0023] like Figure 1-5As shown, the utility model provides a lithium ion battery negative electrode material grinding device, including a support frame 1, a screening mechanism 2 is fixedly connected to the top of the support frame 1, a feed hopper 3 is fixedly connected to the top of the screening mechanism 2, a grinding mechanism 4 is fixedly connected to the upper end of the inner cavity of the screening mechanism 2, a reflux mechanism 5 is fixedly connected to the bottom of the inner cavity at one end of the screening mechanism 2, the screening mechanism 2 includes a fixed shell 21, the bottom of the fixed shell 21 is fixedly connected to the top of the support frame 1, a discharge port 22 is arranged on one side of the lower end of the inner cavity of the fixed shell 21, a stopper 23 is fixedly connected to the bottom of the inner cavity of the fixed shell 21, a guide plate 24 is fixedly connected to the middle of the inner cavity of the fixed shell 21, a card block 25 is arranged below the guide plate 24, a sieve plate 26 is overlapped on the surface of the card block 25, a sieve mesh 27 is arranged inside the sieve plate 26, the bottom of one end of the sieve plate 26 is overlapped with the top of the stopper 23, and a tremor generator 28 is fixedly connected to the surface of the sieve plate 26.

[0024] In this embodiment, the ground graphite falls from the discharge chamber 410 to the surface of the guide plate 24. Under the action of the guide plate 24, the graphite falls to the surface of the screen 27. Under the action of the vibration generator 28, the screen plate 26 drives the screen 27 to vibrate, thereby screening out the graphite. After the graphite with a qualified degree of fineness passes through the screen, it is discharged along the discharge port 22 under the action of the block 23. The graphite with an unqualified degree of fineness enters the reflux pipe 51 along the reflux port 52 under the guidance of the screen plate 26.

[0025] Example 2

[0026] like Figure 1-5 As shown, on the basis of Example 1, the utility model provides a technical solution: preferably, the grinding mechanism 4 includes a gear box 41, one side of the gear box 41 is fixedly connected to the back of the fixed shell 21, the back of the gear box 41 is fixedly connected to a motor 42, the middle of the rotating shaft of the motor 42 is fixedly connected to a gear 43, one end of the rotating shaft of the motor 42 is fixedly connected to a grinding roller 44, the surface of the gear 43 is meshed with a gear rod 45, one end of the gear rod 45 is fixedly connected to a grinding roller 2 46, the top of the inner cavity of the fixed shell 21 is fixedly connected to a grinding bin 47, the top of the grinding bin 47 is fixedly connected to a feed port 48, a grinding chamber 49 is arranged inside the grinding bin 47, the top of the inner cavity of the feed port 48 is connected to the bottom of the inner cavity of the feed hopper 3, and discharge chambers 410 are opened on both sides of the inner cavity of the grinding chamber 49.

[0027] In this embodiment, graphite is placed in the feed hopper 3, and then enters the grinding chamber 49 from the feed port 48 under the action of the graphite's own gravity. The grinding roller 1 44 is rotated by the action of the motor 1 42, and at the same time, the gear 43 drives the gear rod 45 to rotate the grinding roller 2 46. Under the action of the two sets of grinding rollers, the graphite is ground. The setting of the grinding chamber 49 whose shape and height match the grinding roller makes it difficult for the graphite to escape from the pressure applied by the grinding roller, thereby making the grinding efficiency higher.

[0028] Example 3

[0029] like Figure 1-5 As shown, on the basis of Example 1, the utility model provides a technical solution: preferably, the reflux mechanism 5 includes a reflux pipe 51, the bottom of the reflux pipe 51 is fixedly connected to the bottom of the inner cavity of the fixed shell 21, one side of the bottom of the inner cavity of the reflux pipe 51 is fixedly connected with a reflux port 52, one side of the inner cavity of the reflux port 52 is connected with one side of the inner cavity of the fixed shell 21, the top of the reflux pipe 51 is fixedly connected with a motor 2 53, the surface of the rotating shaft of the motor 2 53 is fixedly connected with a spiral blade 54, and one side of the top of the inner cavity of the reflux pipe 51 is fixedly connected with a discharge pipe 55.

[0030] In this embodiment, under the action of motor 2 53, the spiral blade 54 rotates to discharge the graphite from the discharge pipe 55 along the reflux pipe 51, and re-enters the grinding chamber 49 from the feed hopper 3 for re-grinding until it can pass through the screen 27, so that the grinding efficiency is higher and it is more convenient to use.

[0031] The working principle of the lithium-ion battery negative electrode material grinding device is described in detail below.

[0032] like Figure 1-5As shown, when grinding graphite, the graphite is placed in the feed hopper 3, and then under the action of its own gravity, the graphite enters the grinding chamber 49 from the feed port 48, and the grinding roller 1 44 is rotated under the action of the motor 1 42, and the gear 43 drives the gear rod 45 to rotate the grinding roller 2 46. Under the action of the two sets of grinding rollers, the graphite is ground. The setting of the grinding chamber 49 whose shape and height match the grinding roller makes it difficult for the graphite to escape from the pressure applied by the grinding roller, so that the grinding efficiency is higher. The ground graphite falls from the discharge chamber 410 to the surface of the guide plate 24, and under the action of the guide plate 24, the graphite falls. It falls onto the surface of the screen 27, and under the action of the vibration generator 28, the screen plate 26 drives the screen 27 to vibrate, so as to screen out the graphite, so that the graphite with qualified fineness passes through the screen, and is discharged along the discharge port 22 under the action of the stop block 23. The graphite with unqualified fineness enters the reflux pipe 51 along the reflux port 52 under the guidance of the screen plate 26, and under the action of the motor 2 53, the spiral blade 54 rotates to discharge the graphite from the discharge pipe 55 along the reflux pipe 51, and re-enters the grinding chamber 49 from the feed hopper 3 for re-grinding until it can pass through the screen 27, so as to make the grinding efficiency higher and more convenient to use.

[0033] 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 deviate from the spirit of the present invention are within the scope of protection of the present invention.

Claims

1. A lithium-ion battery negative electrode material grinding device, comprising a support frame (1), characterized in that: The top of the support frame (1) is fixedly connected to a screening mechanism (2), the top of the screening mechanism (2) is fixedly connected to a feed hopper (3), the upper end of the inner cavity of the screening mechanism (2) is fixedly connected to a grinding mechanism (4), the bottom of the inner cavity of one end of the screening mechanism (2) is fixedly connected to a reflux mechanism (5), the screening mechanism (2) comprises a fixed shell (21), the bottom of the fixed shell (21) is fixedly connected to the top of the support frame (1), a discharge port (22) is provided on one side of the lower end of the inner cavity of the fixed shell (21), and a stopper (23) is fixedly connected to the bottom of the inner cavity of the fixed shell (21). ), a guide plate (24) is fixedly connected to the middle of the inner cavity of the fixed shell (21), a block (25) is arranged below the guide plate (24), a screen plate (26) is overlapped on the surface of the block (25), a grinding bin (47) is fixedly connected to the top of the inner cavity of the fixed shell (21), a feed port (48) is fixedly connected to the top of the grinding bin (47), a grinding chamber (49) is arranged inside the grinding bin (47), the top of the inner cavity of the feed port (48) is connected to the bottom of the inner cavity of the feed hopper (3), and discharge chambers (410) are opened on both sides of the inner cavity of the grinding chamber (49).

2. A lithium-ion battery negative electrode material grinding device according to claim 1, characterized in that: A sieve (27) is provided inside the sieve plate (26), the bottom of one end of the sieve plate (26) overlaps the top of the stopper (23), and a vibration generator (28) is fixedly connected to the surface of the sieve plate (26).

3. A lithium-ion battery negative electrode material grinding device according to claim 1, characterized in that: The grinding mechanism (4) comprises a gear box (41), one side of the gear box (41) is fixedly connected to the back side of a fixed shell (21), the back side of the gear box (41) is fixedly connected to a motor 1 (42), a gear (43) is fixedly connected to the middle of the rotating shaft of the motor 1 (42), one end of the rotating shaft of the motor 1 (42) is fixedly connected to a grinding roller 1 (44), a gear rod (45) is meshed on the surface of the gear (43), and one end of the gear rod (45) is fixedly connected to a grinding roller 2 (46).

4. A lithium-ion battery negative electrode material grinding device according to claim 1, characterized in that: The reflux mechanism (5) comprises a reflux pipe (51), the bottom of the reflux pipe (51) is fixedly connected to the bottom of the inner cavity of the fixed shell (21), one side of the bottom of the inner cavity of the reflux pipe (51) is fixedly connected to a reflux port (52), one side of the inner cavity of the reflux port (52) is communicated with one side of the inner cavity of the fixed shell (21), the top of the reflux pipe (51) is fixedly connected to a second motor (53), the surface of the rotating shaft of the second motor (53) is fixedly connected to a spiral blade (54), and one side of the inner cavity of the top of the reflux pipe (51) is fixedly connected to a discharge pipe (55).

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