Negative electrode material grinding device

Abstract

The utility model discloses a kind of negative electrode material grinding devices, it is related to negative electrode material grinding technical field, including grinding cylinder, the top end of grinding cylinder is fixedly installed with top cover by bolt, the upper surface of top cover is equipped with blanking groove, the top end of top cover is fixedly installed with blanking hopper by bolt.The negative electrode material grinding device, rotate by gear drive gear ring and conduit one, drive coarse grinding disc and fine grinding disc to rotate, material is ground and handled, two grinding parts are classified to grind negative electrode material, better make negative electrode material particle size consistent, in the process of grinding, water body is injected by inlet pipe, water body successively flows through rotary joint two, conduit one, coarse grinding disc, conduit two, fine grinding disc, conduit three, rotary joint one and outlet pipe, so that in the process of grinding operation, grinding part and inside can be cooled, greatly avoid the problem that graphite material oxidation or structure damage is caused by temperature being too high due to grinding.

Description

Technical Field

[0001] This utility model relates to the field of negative electrode material grinding technology, specifically a negative electrode material grinding device. Background Technology

[0002] The particle size and distribution of lithium battery anode materials (such as artificial graphite, natural graphite, silicon-carbon composite materials, etc.) have a crucial impact on the electrochemical performance of the battery (such as initial efficiency, rate capability, and cycle life). Currently, mechanical grinding is commonly used to crush and shape anode materials. However, the grinding uniformity is poor, the material is subjected to uneven force in a single grinding chamber, and some materials are not ground enough, resulting in an excessively wide particle size distribution in the product. Furthermore, grinding generates a large amount of heat, and excessively high local temperatures may cause graphite materials to oxidize or be structurally damaged, affecting material performance. The grinding and cooling effects are also inadequate. Utility Model Content

[0003] (a) Technical problems to be solved

[0004] To address the shortcomings of existing technologies, this invention provides a negative electrode material grinding device, which has the advantages of good grinding and cooling effects.

[0005] (II) Technical Solution

[0006] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a negative electrode material grinding device, including a grinding cylinder, a top cover fixedly installed at the top of the grinding cylinder by bolts, a feeding groove opened on the upper surface of the top cover, a feeding funnel fixedly installed at the top of the top cover by bolts, and the feeding funnel is connected to the feeding groove.

[0007] A mounting bracket is fixedly installed on the upper surface of the top cover by bolts. A servo motor is fixedly installed on the upper surface of the mounting bracket by bolts. A gear is fixedly installed on the output end of the servo motor. A bearing is embedded in the bottom surface of the mounting bracket, and the outer surface of the output end of the servo motor is fixedly connected to the inner ring of the bearing.

[0008] The top cover has a bearing 2 embedded in its center. A guide tube 1 is fixedly installed on the inner ring of the bearing 2. A gear ring is fixedly installed on the outer surface of the top end of the guide tube 1, and the gear meshes with the gear ring. A coarse grinding disc and a fine grinding disc are placed inside the grinding cylinder. The bottom end of the guide tube 1 is fixedly connected to the top end of the coarse grinding disc through a sealing flange and bolts. The coarse grinding disc and the fine grinding disc are connected through the guide tube 2, and the upper and lower connecting parts of the guide tube 2 are fixedly connected through sealing flanges and bolts. The bottom end of the fine grinding disc is fixedly connected to the guide tube 3 through a sealing flange and bolts. A fixed seat is fixedly installed on the inner bottom wall of the grinding cylinder. The top end of the fixed seat has a bearing 3 embedded in it, and the outer surface of the guide tube 3 is fixedly connected to the inner ring of the bearing 3. A rotary joint 1 is placed in the bottom groove of the fixed seat, and the bottom end of the guide tube 3 is fixedly connected to the top end of the rotary joint 1. A water outlet pipe is fixedly installed at the bottom of the grinding cylinder, and the top end of the water outlet pipe is fixedly connected to the bottom end of the rotary joint 1.

[0009] Furthermore, a bracket is fixedly installed on the upper surface of the top cover by bolts, and a water inlet pipe is fixedly installed on the top of the bracket. The top of the first conduit and the water inlet pipe are connected by a second rotary joint.

[0010] By adopting the above technical solution, the water inlet pipe can be better fixed, and the rotary joint can ensure that water can flow simultaneously when the first conduit is rotated.

[0011] Furthermore, four support legs are fixedly installed at the bottom of the grinding cylinder.

[0012] By adopting the above technical solution, the device can be better supported and fixed.

[0013] Furthermore, the inner wall of the grinding cylinder is provided with a raised portion, which forms a grinding section with the coarse grinding disc and the fine grinding disc, and the gap between the fine grinding disc and the raised portion is smaller than the gap between the coarse grinding disc and the raised portion.

[0014] By adopting the above technical solution, the material is ground between the coarse grinding disc and the raised part when the coarse grinding disc rotates. Furthermore, when the material is ground again by the fine grinding disc after being coarsely ground by the coarse grinding disc, the fine grinding effect can be improved, which is more conducive to the uniformity of particle size.

[0015] Furthermore, the input terminal of the servo motor is electrically connected to the circuit board via a motor controller.

[0016] By adopting the above technical solution, the start / stop, direction of rotation, speed and running time of the servo motor can be better controlled through the circuit board.

[0017] (III) Beneficial Effects

[0018] Compared with existing technologies, this negative electrode material grinding device has the following advantages:

[0019] This invention utilizes a servo motor to drive gears, which in turn rotate a gear ring and a guide tube, thereby rotating a coarse grinding disc and a fine grinding disc to grind the material. The two grinding sections perform graded grinding of the negative electrode material, resulting in more uniform particle size. During the grinding process, water is injected through an inlet pipe, flowing sequentially through a rotary joint, guide tube one, coarse grinding disc, guide tube two, fine grinding disc, guide tube three, rotary joint one, and an outlet pipe. This effectively cools the grinding section and its internal components, significantly preventing overheating that could lead to graphite oxidation or structural damage. This improves the cooling effect of the device. Furthermore, the use of rotary joints one and two ensures that water flow and rotation occur simultaneously. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of this utility model;

[0021] Figure 2 This is a cross-sectional view of the grinding cylinder of this utility model;

[0022] Figure 3 This is an exploded view of the external structure of the top cover of this utility model;

[0023] Figure 4 This is a schematic diagram of the fixing frame structure of this utility model;

[0024] Figure 5 This is a cross-sectional view of the precision grinding disc of this utility model.

[0025] In the diagram: 1-Grinding cylinder, 2-Support leg, 3-Water outlet pipe, 4-Top cover, 5-Water inlet pipe, 6-Feeding funnel, 7-Fixed frame, 8-Bracket, 9-Fixed seat, 10-Fine grinding disc, 11-Rough grinding disc, 12-Bearing II, 13-Feeding trough, 14-Bearing I, 15-Servo motor, 16-Gear, 17-Bearing III, 18-Rotary joint I, 19-Conduit III, 20-Conduit II, 21-Conduit I, 22-Gear ring, 23-Rotary joint II. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] Please see Figure 1-5This utility model provides a technical solution: a negative electrode material grinding device, including a grinding cylinder 1, four support legs 2 are fixedly installed at the bottom end of the grinding cylinder 1 to better support and fix the device, a top cover 4 is fixedly installed at the top end of the grinding cylinder 1 by bolts, a feeding groove 13 is opened on the upper surface of the top cover 4, and a feeding funnel 6 is fixedly installed at the top end of the top cover 4 by bolts, and the feeding funnel 6 is connected to the feeding groove 13.

[0028] A mounting bracket 7 is fixedly installed on the upper surface of the top cover 4 by bolts. A servo motor 15 is fixedly installed on the upper surface of the mounting bracket 7 by bolts. The input end of the servo motor 15 is electrically connected to the circuit board through the motor controller, so that the start, stop, direction of rotation, speed and running time of the servo motor 15 can be better controlled by the circuit board. A gear 16 is fixedly installed on the output end of the servo motor 15. A bearing 14 is embedded in the bottom surface of the mounting bracket 7, and the outer surface of the output end of the servo motor 15 is fixedly connected to the inner ring of the bearing 14.

[0029] A bearing 12 is embedded in the center of the top cover 4. A guide tube 21 is fixedly installed on the inner ring of the bearing 12. A gear ring 22 is fixedly installed on the outer surface of the top end of the guide tube 21, and the gear 16 meshes with the gear ring 22. A coarse grinding disc 11 and a fine grinding disc 10 are placed inside the grinding cylinder 1. A raised part is provided on the inner side wall of the grinding cylinder 1, which forms a grinding part with the coarse grinding disc 11 and the fine grinding disc 10. The gap between the fine grinding disc 10 and the raised part is smaller than the gap between the coarse grinding disc 11 and the raised part. When the coarse grinding disc 11 and the fine grinding disc 10 rotate, they grind the material with the raised part. When the material is coarsely ground by the coarse grinding disc 11 and then ground by the fine grinding disc 10, the fine grinding effect can be improved, which is more conducive to the uniformity of particle size.

[0030] The bottom end of the first conduit 21 is fixedly connected to the top end of the coarse grinding disc 11 via a sealing flange and bolts. The coarse grinding disc 11 and the fine grinding disc 10 are connected via the second conduit 20, and the upper and lower connecting parts of the second conduit 20 are fixedly connected via sealing flanges and bolts. The bottom end of the fine grinding disc 10 is fixedly connected to the third conduit 19 via a sealing flange and bolts. A fixed seat 9 is fixedly installed on the inner bottom wall of the grinding cylinder 1. A bearing 17 is embedded at the top end of the fixed seat 9, and the outer surface of the third conduit 19 is fixedly connected to the inner ring of the bearing 17. A rotary joint 18 is placed in the bottom groove of the fixed seat 9, and the bottom end of the third conduit 19 is fixedly connected to the top end of the rotary joint 18. A water outlet pipe 3 is fixedly installed at the bottom of the grinding cylinder 1, and the top end of the water outlet pipe 3 is fixedly connected to the bottom end of the rotary joint 18.

[0031] A bracket 8 is fixedly installed on the upper surface of the top cover 4 by bolts. A water inlet pipe 5 is fixedly installed on the top of the bracket 8. The top of the conduit 21 and the water inlet pipe 5 are connected by a rotary joint 23 to better fix the water inlet pipe 5. The rotary joint 23 can also ensure that water can flow simultaneously when the conduit 21 rotates.

[0032] Working principle: During use, the negative electrode material to be ground is poured into the grinding cylinder 1 through the feeding funnel 6. The servo motor 15 drives the gear 16 to rotate, which in turn drives the gear ring 22 and the first guide tube 21 to rotate, thereby driving the coarse grinding disc 11 and the fine grinding disc 10 to rotate. First, the material enters the fine grinding zone through the grinding of the coarse grinding disc 11, and the material is ground again by the fine grinding disc 10. The negative electrode material is graded and ground by the two grinding sections to better ensure that the particle size of the negative electrode material is consistent. During the grinding process, water is injected through the water inlet pipe 5. The water flows sequentially through the rotary joint 23, the first guide tube 21, the coarse grinding disc 11, the second guide tube 20, the fine grinding disc 10, the third guide tube 19, the rotary joint 18, and the water outlet pipe 3. During the grinding operation, the grinding section and its interior are cooled, which greatly avoids the problem of excessive temperature during grinding that could lead to oxidation or structural damage of the graphite material, and improves the cooling effect of the device.

[0033] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A negative electrode material grinding device, comprising a grinding cylinder (1), characterized in that: The top of the grinding cylinder (1) is fixedly installed with a top cover (4) by bolts. The upper surface of the top cover (4) is provided with a feeding groove (13). The top of the top cover (4) is fixedly installed with a feeding funnel (6) by bolts, and the feeding funnel (6) is connected to the feeding groove (13). The top cover (4) has a fixing bracket (7) fixedly installed on its upper surface by bolts. The fixing bracket (7) has a servo motor (15) fixedly installed on its upper surface by bolts. The output end of the servo motor (15) has a gear (16) fixedly installed. The bottom surface of the fixing bracket (7) has a bearing (14) embedded in it. The outer surface of the output end of the servo motor (15) is fixedly connected to the inner ring of the bearing (14). The top cover (4) is inlaid with a bearing 2 (12) in the middle. A guide tube 1 (21) is fixedly installed on the inner ring of the bearing 2 (12). A gear ring (22) is fixedly installed on the outer surface of the top end of the guide tube 1 (21), and the gear (16) meshes with the gear ring (22). The grinding cylinder (1) contains a coarse grinding disc (11) and a fine grinding disc (10). The bottom end of the guide tube 1 (21) is fixedly connected to the top end of the coarse grinding disc (11) through a sealing flange and bolts. The coarse grinding disc (11) and the fine grinding disc (10) are connected through a guide tube 2 (20), and the upper and lower connecting parts of the guide tube 2 (20) are fixed by sealing flanges and bolts. The bottom end of the fine grinding disc (10) is connected to the conduit three (19) by a sealing flange and bolts. The inner bottom wall of the grinding cylinder (1) is fixedly installed with a fixed seat (9). The top end of the fixed seat (9) is inlaid with a bearing three (17), and the outer surface of the conduit three (19) is fixedly connected to the inner ring of the bearing three (17). A rotary joint one (18) is placed in the bottom groove of the fixed seat (9), and the bottom end of the conduit three (19) is fixedly connected to the top end of the rotary joint one (18). The bottom of the grinding cylinder (1) is fixedly installed with a water outlet pipe (3), and the top end of the water outlet pipe (3) is fixedly connected to the bottom end of the rotary joint one (18).

2. The negative electrode material grinding device according to claim 1, characterized in that: The top surface of the top cover (4) is fixedly mounted with a bracket (8) by bolts. The top of the bracket (8) is fixedly mounted with a water inlet pipe (5). The top of the first conduit (21) and the water inlet pipe (5) are connected by a rotating joint (23).

3. The negative electrode material grinding device according to claim 1, characterized in that: Four support legs (2) are fixedly installed at the bottom of the grinding cylinder (1).

4. The negative electrode material grinding device according to claim 1, characterized in that: The inner wall of the grinding cylinder (1) is provided with a raised portion, which forms a grinding part with the coarse grinding disc (11) and the fine grinding disc (10), and the gap between the fine grinding disc (10) and the raised portion is smaller than the gap between the coarse grinding disc (11) and the raised portion.

5. The negative electrode material grinding device according to claim 1, characterized in that: The input terminal of the servo motor (15) is electrically connected to the circuit board through the motor controller.

Images