Grinding device for graphite negative electrode powder production

Abstract

The utility model discloses a grinding device for graphite negative electrode powder production, and relates to the technical field of graphite negative electrode production. The device comprises an external support, a grinding mechanism is arranged at the top end of the external support, a grinding frame and an intermittent discharging device are arranged on the external support, an automatic graphite powder screening device is arranged at the bottom end of the external support, and a driving device is arranged on the side, close to the automatic graphite powder screening device, in the external support. The automatic graphite powder screening device comprises a screening bottom frame, the screening bottom frame is fixedly connected with an external support, and sliding rods are fixedly installed on the two sides of the screening bottom frame. According to the graphite powder screening device disclosed by the utility model, the graphite powder automatic screening device is arranged, so that ground graphite powder is screened by the graphite powder automatic screening device, the graphite powder which is not fully ground is separated from the graphite powder which is fully ground, and the effect of screening the ground graphite powder is realized through the operation; and the influence on the stability and uniformity of the product caused by insufficient grinding of the graphite powder is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of graphite negative electrode production, in particular to a grinding device for producing graphite negative electrode powder. Background Art

[0002] Graphite anode powder is an important battery material, mainly used for the negative electrode of lithium-ion batteries. Graphite anode powder has good electrical conductivity, thermal conductivity and chemical stability, and is one of the key raw materials for manufacturing high-performance batteries;

[0003] In the process of producing graphite negative electrode powder, the graphite raw materials need to be evenly mixed according to a certain formula. After evenly mixing, the raw materials need to be ground. There is a problem of insufficient grinding of the graphite raw materials in the grinding process. Insufficient grinding of the graphite raw materials has a great impact on the product quality. The ground graphite powder needs to be screened. Secondly, graphite powder accumulation will occur during the feeding process. The graphite powder accumulation will affect the screening effect and the screening efficiency is low. In view of the above problems, the inventors proposed a grinding device for the production of graphite negative electrode powder to solve the above problems. Utility Model Content

[0004] In order to solve the problem of screening graphite powder after grinding graphite raw materials and improve the screening efficiency; the purpose of the utility model is to provide a grinding device for producing graphite negative electrode powder.

[0005] In order to solve the above technical problems, the utility model adopts the following technical solutions: a grinding device for producing graphite negative electrode powder, comprising an external bracket, a grinding mechanism is provided at the top of the external bracket, a grinding frame and an intermittent feeding device are provided on the external bracket, an automatic graphite powder screening device is provided at the bottom of the external bracket, and a driving device is provided on one side of the external bracket close to the automatic graphite powder screening device;

[0006] The graphite powder automatic screening device includes a screening bottom frame, which is fixedly connected to an external bracket, and sliding rods are fixedly installed on both sides of the screening bottom frame. Two sliding blocks are slidably installed on the outer wall of the sliding rod, and the screening frame is fixedly installed on the top of the sliding block. A connecting rod is rotatably installed on one side of the outer wall of the screening frame, and a rotating rod is rotatably installed on the other side of the connecting rod.

[0007] Preferably, the intermittent unloading device includes a No. 1 rotating shaft, which is rotatably mounted on the bottom of the external bracket, a rotating disc is fixedly mounted on the outer wall of the No. 1 rotating shaft close to the grinding frame, an intermittent rotating disc is fixedly mounted on the bottom end of the No. 1 rotating shaft, a No. 2 rotating shaft is rotatably mounted on the side of the external bracket close to the No. 1 rotating shaft, and a driving rotating disc is fixedly mounted on the outer wall of the No. 2 rotating shaft.

[0008] Preferably, the driving device comprises two symmetrically distributed fixing blocks, the fixing blocks are fixedly mounted on the external bracket, a driving shaft is rotatably mounted on the fixing blocks, and the rotating rod is fixedly connected to the driving shaft.

[0009] Preferably, the external bracket is rotatably mounted with a transmission shaft near the driving shaft, a first bevel gear is fixedly mounted on the bottom end of the transmission shaft, a second bevel gear is fixedly mounted on one end of the driving shaft near the first bevel gear, and the first bevel gear and the second bevel gear are meshingly connected, and the rotating rod is fixedly connected to the driving shaft.

[0010] Preferably, a driving motor is fixedly mounted on the external bracket, and the driving end of the driving motor and the driving shaft are transmission-connected via a pulley transmission group.

[0011] Preferably, the transmission shaft and the second rotating shaft are connected via a synchronous wheel transmission group.

[0012] Preferably, a pulley is rotatably mounted on the sliding block, and the pulley is slidably connected to the sliding rod.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] 1. The utility model is provided with an automatic graphite powder screening device, so that the graphite powder automatic screening device screens the ground graphite powder, separates the insufficiently ground graphite powder from the fully ground graphite powder, and achieves the effect of screening the ground graphite powder through the above operation, thereby avoiding the influence of insufficiently ground graphite powder and different sizes and shapes of graphite powder on the stability and uniformity of the product, and ensuring the production quality of the product;

[0015] 2. The utility model sets an intermittent feeding device, so that the No. 2 rotating shaft drives the No. 1 rotating shaft to rotate intermittently through the driving turntable and the intermittent turntable, and the No. 1 rotating shaft drives the rotating disc to rotate synchronously and intermittently, so that the graphite powder ground in the grinding frame is intermittently dropped into the graphite powder automatic screening device for screening. The above operation achieves the effect of intermittent feeding of the ground graphite powder, and the intermittent feeding of the graphite powder prevents excessive one-time feeding from accumulating in the screening frame to slow down the screening rate.

[0016] 3. The utility model provides a driving device to drive the automatic graphite powder screening device and the intermittent feeding device to work synchronously, thereby improving work efficiency through the synchronous operation of the automatic graphite powder screening device and the intermittent feeding device. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 It is a schematic diagram of the structure of the utility model;

[0019] Figure 2 This is a schematic diagram of the overall dissected structure of the utility model;

[0020] Figure 3 This is a schematic diagram of the structure of the automatic graphite powder screening device in the utility model;

[0021] Figure 4 for Figure 3 A schematic diagram of the structure enlargement in the middle;

[0022] Figure 5 It is a structural schematic diagram of the intermittent feeding device in the utility model;

[0023] Figure 6 It is a schematic diagram of the structure of the driving turntable and the intermittent turntable in the utility model.

[0024] In the figure: 1. external bracket; 2. grinding mechanism; 3. grinding frame; 4. automatic graphite powder screening device; 401. screening bottom frame; 402. sliding rod; 403. sliding block; 404. screening frame; 405. connecting rod; 406. rotating rod; 407. pulley; 5. intermittent unloading device; 501. No. 1 rotating shaft; 502. rotating disc; 503. intermittent turntable; 504. No. 2 rotating shaft; 505. driving turntable; 6. driving device; 601. fixing block; 602. driving shaft; 603. transmission shaft; 604. No. 1 bevel gear; 605. No. 2 bevel gear; 606. driving motor. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] like Figure 1-5As shown, the utility model provides a grinding device for producing graphite negative electrode powder, comprising an external bracket 1, a grinding mechanism 2 is provided at the top of the external bracket 1, a grinding frame 3 and an intermittent feeding device 5 are provided on the external bracket 1, a graphite powder automatic screening device 4 is provided at the bottom of the external bracket 1, and a driving device 6 is provided on one side of the external bracket 1 close to the graphite powder automatic screening device 4;

[0027] The graphite powder automatic screening device 4 includes a screening bottom frame 401, which is fixedly connected to the external bracket 1. Slide rods 402 are fixedly installed on both sides of the screening bottom frame 401. Two sliders 403 are slidably installed on the outer wall of the slider 402. A screening frame 404 is fixedly installed on the top of the slider 403. A connecting rod 405 is rotatably installed on one side of the outer wall of the screening frame 404, and a rotating rod 406 is rotatably installed on the other side of the connecting rod 405.

[0028] By adopting the above technical solution, the rotating rod 406 drives the screening frame 404 to move through the connecting rod 405.

[0029] The intermittent unloading device 5 includes a No. 1 rotating shaft 501, which is rotatably installed at the bottom of the external bracket 1. A rotating disc 502 is fixedly installed on the outer wall of the No. 1 rotating shaft 501 close to the grinding frame 3. An intermittent rotating disc 503 is fixedly installed at the bottom of the No. 1 rotating shaft 501. A No. 2 rotating shaft 504 is rotatably installed on the side of the external bracket 1 close to the No. 1 rotating shaft 501, and a driving rotating disc 505 is fixedly installed on the outer wall of the No. 2 rotating shaft 504.

[0030] By adopting the above technical solution, the second rotating shaft 504 drives the first rotating shaft 501 to rotate intermittently through the driving rotating disk 505 and the intermittent rotating disk 503 .

[0031] The driving device 6 includes two symmetrically distributed fixing blocks 601 . The fixing blocks 601 are fixedly mounted on the external bracket 1 . A driving shaft 602 is rotatably mounted on the fixing blocks 601 . The rotating rod 406 and the driving shaft 602 are fixedly connected.

[0032] By adopting the above technical solution, the driving shaft 602 is rotatably mounted on the fixing block 601 .

[0033] A transmission shaft 603 is rotatably installed on one side of the external bracket 1 close to the driving shaft 602, a first bevel gear 604 is fixedly installed on the bottom end of the transmission shaft 603, a second bevel gear 605 is fixedly installed on one end of the driving shaft 602 close to the first bevel gear 604, and the first bevel gear 604 and the second bevel gear 605 are meshed and connected, and the rotating rod 406 is fixedly connected to the driving shaft 602.

[0034] By adopting the above technical solution, the driving shaft 602 drives the transmission shaft 603 to rotate.

[0035] A driving motor 606 is fixedly mounted on the external bracket 1 , and a driving end of the driving motor 606 and a driving shaft 602 are connected in transmission via a pulley transmission group.

[0036] By adopting the above technical solution, the driving motor 606 drives the driving shaft 602 to rotate.

[0037] The transmission shaft 603 and the second rotating shaft 504 are connected by a synchronous wheel transmission group.

[0038] By adopting the above technical solution, the transmission shaft 603 drives the second rotating shaft 504 to rotate through the synchronous wheel transmission group.

[0039] A pulley 407 is rotatably mounted on the slider 403 , and the pulley 407 is slidably connected to the slide bar 402 .

[0040] By adopting the above technical solution, the slider 403 slides on the slide bar 402 through the pulley 407 .

[0041] Working principle: First, the graphite raw materials are evenly mixed according to a certain formula ratio and then put into the grinding frame 3, and the graphite raw materials are ground by the grinding mechanism 2. After grinding, the drive motor 606 is controlled to be turned on, and the driving end of the drive motor 606 rotates through the pulley transmission group to drive the drive shaft 602 to rotate, and the drive shaft 602 drives the transmission shaft 603 to rotate through the No. 1 bevel gear 604 and the No. 2 bevel gear 605, and the transmission shaft 603 drives the No. 2 rotating shaft 504 to rotate through the synchronous wheel transmission group, and the No. 2 rotating shaft 504 drives the No. 1 rotating shaft 501 to rotate a quarter of a circle through the driving turntable 505 and the intermittent turntable 503, and the No. 1 rotating shaft 501 rotates to drive the rotating disc 502 to rotate synchronously. When the unloading slot on the rotating disc 502 When it coincides with the bottom notch of the grinding frame 3, the graphite powder in the grinding frame 3 falls into the screening frame 404 through the feeding notch. When the feeding notch on the rotating disk 502 is completely misaligned with the bottom notch of the grinding frame 3, the graphite powder stops falling, thereby achieving the effect of intermittent feeding. While the driving shaft 602 rotates, the screening frame 404 is driven to reciprocate under the guidance of the slide bar 402 through the rotating rod 406 and the connecting rod 405. The graphite powder on the screening frame 404 is screened through the reciprocating movement of the screening frame 404. The insufficiently ground graphite powder is intercepted by the screen and discharged through the upper feeding frame under the action of the screening frame 404. It is collected and ground again. The fully ground graphite powder falls into the screening bottom frame 401 and is discharged through the lower feeding frame. It is collected and then subjected to other processes.

[0042] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A grinding device for producing graphite negative electrode powder, comprising an external support (1), characterized in that: The top of the external support (1) is provided with a grinding mechanism (2), the external support (1) is provided with a grinding frame (3) and an intermittent feeding device (5), the bottom of the external support (1) is provided with an automatic graphite powder screening device (4), and a driving device (6) is provided on the side of the external support (1) close to the automatic graphite powder screening device (4); The graphite powder automatic screening device (4) comprises a screening bottom frame (401), wherein the screening bottom frame (401) is fixedly connected to an external bracket (1), and sliding rods (402) are fixedly installed on both sides of the screening bottom frame (401), and two sliding blocks (403) are slidably installed on the outer wall of the sliding rod (402), and a screening frame (404) is fixedly installed on the top of the sliding block (403), and a connecting rod (405) is rotatably installed on one side of the outer wall of the screening frame (404), and a rotating rod (406) is rotatably installed on the other side of the connecting rod (405).

2. A grinding device for producing graphite negative electrode powder according to claim 1, characterized in that: The intermittent feeding device (5) comprises a first rotating shaft (501), the first rotating shaft (501) being rotatably mounted on the bottom of the external bracket (1), a rotating disc (502) being fixedly mounted on the outer wall of the first rotating shaft (501) close to the grinding frame (3), an intermittent rotating disc (503) being fixedly mounted on the bottom end of the first rotating shaft (501), a second rotating shaft (504) being rotatably mounted on the side of the external bracket (1) close to the first rotating shaft (501), and a driving rotating disc (505) being fixedly mounted on the outer wall of the second rotating shaft (504).

3. A grinding device for producing graphite negative electrode powder according to claim 1, characterized in that: The driving device (6) comprises two symmetrically distributed fixed blocks (601), wherein the fixed blocks (601) are fixedly mounted on the external bracket (1), a driving shaft (602) is rotatably mounted on the fixed blocks (601), and the rotating rod (406) and the driving shaft (602) are fixedly connected.

4. A grinding device for producing graphite negative electrode powder according to claim 1, characterized in that: A transmission shaft (603) is rotatably mounted on one side of the external bracket (1) close to the driving shaft (602); a first bevel gear (604) is fixedly mounted on the bottom end of the transmission shaft (603); a second bevel gear (605) is fixedly mounted on one end of the driving shaft (602) close to the first bevel gear (604); the first bevel gear (604) and the second bevel gear (605) are meshingly connected; and the rotating rod (406) is fixedly connected to the driving shaft (602).

5. A grinding device for producing graphite negative electrode powder according to claim 1, characterized in that: A driving motor (606) is fixedly mounted on the external bracket (1), and a driving end of the driving motor (606) and a driving shaft (602) are connected in transmission via a pulley transmission group.

6. A grinding device for producing graphite negative electrode powder according to claim 4, characterized in that: The transmission shaft (603) and the second rotating shaft (504) are connected in transmission via a synchronous wheel transmission group.

7. A grinding device for producing graphite negative electrode powder according to claim 1, characterized in that: A pulley (407) is rotatably mounted on the slider (403), and the pulley (407) and the slide bar (402) are slidably connected.

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