A graphite purification device for lithium battery negative electrode material

Abstract

The application relates to the technical field of purification devices, and discloses a graphitization purification device for lithium battery negative materials, which comprises a support arranged on a horizontal ground, a tank body arranged on the top of the support, a cavity arranged in the tank body, and two first disc bodies arranged in the cavity of the tank body and capable of rotating around the central axis of the tank body. The block moves along the central axis direction of the graphite pipe. When the sealing plate abuts against the end surface of the graphitized material column, the graphitized material column is driven to slide in the through hole of the graphite pipe, so that the end surface of the graphitized material column always abuts against the surface of the sealing plate. When the graphitized material column is heated and shrinks, the block can always abut the graphitized material column between the block and the sealing plate, so that gaps between the graphitized material columns are avoided, the conductivity of the subsequent current is improved, and the production of graphite is affected.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of purification devices, in particular to a graphitization purification device for lithium battery negative materials. BACKGROUND

[0002] The essence of the graphitization process is that carbon atoms obtain enough energy to rearrange and migrate at ultra-high temperatures of 2000-3000 DEG C through heat energy, eliminate various defects and impurities (such as hydrogen, oxygen, nitrogen, sulfur, etc.), and finally form a regular graphite layered structure. The inner string type graphitization furnace is used during graphitization purification, which is an improved type of Acheson furnace, and is currently the mainstream technology for high-end negative material production. When used, the material to be graphitized itself (packed in a graphite tube) is connected head to tail and forms a long columnar resistor body, which is directly located in the furnace core, and the current directly flows through the material column in series. The change of resistance of the material during heating is used to directly heat itself.

[0003] When the existing graphitized material is placed in the graphite tube, it needs to be pre-compacted and made into a dense rod material with a specific shape and density. After being compacted into a dense rod material, the particles are in close contact, the resistance is significantly reduced and uniform and stable, ensuring that the current can efficiently and uniformly flow through the entire material column, thereby achieving uniform heating. Because the graphitized material is compacted into a rod material, a binder coal tar pitch needs to be added to the graphitized material, and the coal tar pitch decomposes and carbonizes when heated, which changes into solid carbon. At this time, the volume of the material column will be significantly reduced, and the length will also be shortened synchronously, resulting in a large gap between the material columns, thereby reducing the conductivity of the current, affecting the subsequent further heating, and making the material column not fully graphitized. SUMMARY

[0004] The purpose of the present application is to solve the problems existing in the prior art and provide a graphitization purification device for lithium battery negative materials.

[0005] To achieve the above purpose, the present application adopts the following technical scheme:

[0006] A graphitization purification device for lithium battery negative materials, comprising:

[0007] A support is fixedly installed on the horizontal ground;

[0008] A tank body is arranged on the top of the support, and the tank body is internally provided with a cavity;

[0009] Two first disc bodies are arranged in the cavity of the tank body and can rotate around the central axis of the tank body;

[0010] A plurality of graphite tubes are arranged between the two first disc bodies, the graphite tubes are internally provided with through holes for accommodating graphite material columns, and the two ends of the graphite tubes penetrate the outer surfaces of the two first disc bodies, respectively;

[0011] A plurality of blocks are arranged in the interiors of the graphite tubes, respectively, the blocks are arranged to be movable along the central axis direction of the graphite tubes, and the outer surfaces of one side of the blocks are provided with connecting columns;

[0012] A first rod body is arranged in the cavity of the tank body, the first rod body is arranged to be electrically connected with the connecting column when the bottom end of the first rod body abuts against the outer surface of the connecting column, and the first rod body is arranged to be electrically disconnected with the connecting column when the first rod body is separated from the outer surface of the connecting column.

[0013] As a further scheme of the present application, a shaft body is rotatably arranged in the cavity of the tank body, the shaft body penetrates the centers of the two first disc bodies and is fixedly connected with the centers, a servo motor is fixedly arranged on the outer surface of the bracket, one end of the shaft body penetrates the outer surface of the tank body, and the output end of the servo motor is fixedly connected with the rotation center of the one end of the shaft body.

[0014] As a further scheme of the present application, a second disc body is fixedly arranged on the outer surface of one end of the shaft body close to the block, the other end of the connecting column penetrates the outer surface of the second disc body, a second spring is sleeved on the outer surface of the connecting column, one end of the second spring is fixedly connected with the outer surface of one side of the second disc body, and the other end of the second spring is fixedly connected with the outer surface of the connecting column.

[0015] As a further scheme of the present application, a plurality of groove bodies are equidistantly arranged on the circumferential outer surface of one end of the shaft body away from the block, a sliding block is slidably arranged on the inner wall of each groove body, a second rod body is fixedly arranged on the outer surface of the sliding block, the top end of the second rod body abuts against the end surface of the connecting column, a first spring is arranged in the interior of the groove body, one end of the first spring is fixedly connected with the end surface of one end of the sliding block, and the other end of the first spring is fixedly connected with the inner wall of one end of the groove body.

[0016] As a further scheme of the present application, the top end of the first rod body penetrates the outer surface of the tank body and is slidably arranged thereon, a cross rod is fixedly arranged on the top end of the first rod body, a tension spring is fixedly connected with the lower surface of the cross rod, and the bottom end of the tension spring is fixedly connected with the outer surface of the tank body.

[0017] As a further scheme of the present application, the first rod body is internally provided with a through slot, a column body is slidingly inserted into the inner wall of the through slot, the bottom end of the column body penetrates the end surface of the first rod body and abuts against the outer surface of the connecting column, the bottom end of the first rod body is provided with a mounting slot, a rotating shaft is rotatably mounted between the inner walls of the mounting slot, a protruding portion is fixedly mounted on the outer surface of the rotating shaft located in the mounting slot, a V-shaped opening is formed on the outer surface of the column body close to the rotating shaft, and the protruding portion is arranged inside the V-shaped opening.

[0018] As a further scheme of the present application, one end of the rotating shaft penetrates the outer surface of the first rod body and is fixedly connected with a connecting rod, and the connecting rod is provided with an inclination angle with the central axis of the first rod body.

[0019] As a further scheme of the present application, the top end of the second rod body is fixedly mounted with a first stop block, the first stop block abuts against the outer surface of the connecting rod, the outer surface of the first rod body close to the bottom end is fixedly mounted with a second stop block, the outer surface of the second stop block is provided with a notch, and the connecting rod protrudes from the outer surface of the second stop block.

[0020] As a further scheme of the present application, the outer surface of the first rod body close to the first stop block is slidingly inserted with a sliding frame, one end of the sliding frame is fixedly connected with a guide column, the outer surface of the column body close to the bottom end is provided with a guide slot penetratingly, the guide column is slidingly mounted with the inner walls of the guide slot, an inclination angle is arranged between the guide slot and the column body, the other end of the sliding frame penetrates the outer surface of the first rod body, the inner wall of the other end of the sliding frame is fixedly connected with a third spring, the other end of the third spring is fixedly connected with the outer surface of the first rod body, and the top end of the column body is provided with a scale mark penetratingly in the first rod body.

[0021] As a further scheme of the present application, the outer surface of the bracket is hingedly connected with a cover body, the inner wall of the cover body close to the tank body is fixedly mounted with a sealing plate, and the sealing plate is flush with the end surface of the graphite tube.

[0022] The block body moves along the central axis direction of the graphite tube, when the sealing plate abuts against the end surface of the graphitized material column, the graphitized material column slides in the through hole of the graphite tube, so that the end surface of the graphitized material column always abuts against the surface of the sealing plate, and the block body can always abut the graphitized material column between the block body and the sealing plate when the graphitized material column shrinks in volume due to heating, so as to avoid the generation of gaps between the graphitized material columns, thereby improving the conductivity of the subsequent current and affecting the production of graphite. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 The present application provides a graphite purification device for lithium battery negative electrode material, and the whole structure schematic diagram of the device is shown in the figure.

[0024] Figure 2A rear view structural schematic diagram of a graphitization purification device for a lithium battery negative electrode material is provided in the present application;

[0025] Figure 3 A tank body sectional view schematic diagram of a graphitization purification device for a lithium battery negative electrode material is provided in the present application;

[0026] Figure 4 A graphite tube schematic diagram of a graphitization purification device for a lithium battery negative electrode material is provided in the present application;

[0027] Figure 5 A first disc body schematic diagram of a graphitization purification device for a lithium battery negative electrode material is provided in the present application;

[0028] Figure 6 A shaft body schematic diagram of a graphitization purification device for a lithium battery negative electrode material is provided in the present application;

[0029] Figure 7 A Figure 6 A local enlarged schematic diagram at A in the middle;

[0030] Figure 8 A block body schematic diagram of a graphitization purification device for a lithium battery negative electrode material is provided in the present application;

[0031] Figure 9 A rod body schematic diagram of a graphitization purification device for a lithium battery negative electrode material is provided in the present application;

[0032] Figure 10 A rod body sectional view schematic diagram of a graphitization purification device for a lithium battery negative electrode material is provided in the present application;

[0033] Figure 11 A column body schematic diagram of a graphitization purification device for a lithium battery negative electrode material is provided in the present application;

[0034] Figure 12 A slider schematic diagram of a graphitization purification device for a lithium battery negative electrode material is provided in the present application.

[0035] In the figure:

[0036] 100, support; 200, cover body; 210, sealing plate;

[0037] 300, tank body; 400, servo motor; 500, shaft body; 510, groove body;

[0038] 600, first disc body; 700, graphite tube;

[0039] 800, block; 810, connecting column; 900, second disc; 1000, first rod; 1100, second rod; 1200, slider; 1300, first spring; 1400, tension spring; 1500, first stop block;

[0040] 1600, second stop block; 1610, notch; 1700, second spring; 1800, rotating shaft; 1810, protruding part; 1900, connecting rod;

[0041] 2000, column; 2010, V-shaped opening; 2020, scale mark; 2030, guide groove; 2100, sliding frame; 2110, guide column; 2200, third spring. DETAILED DESCRIPTION

[0042] In order to make the technical means, creative features, purposes and effects of the present application easy to understand, the present application is further described below in combination with specific embodiments.

[0043] In order to make the graphite material column avoid the gap between the end faces of the two graphite material columns during the heating process, as shown in Figure 1 and Figure 3 The present application proposes a graphite purification device for lithium battery negative electrode material, which comprises a support 100, a tank 300, two first discs 600, a plurality of graphite tubes 700, a plurality of blocks 800 and a first rod 1000. Specifically, as shown in Figure 2 The support 100 is fixedly installed on the horizontal ground and is used for supporting the tank 300. The tank 300 is arranged on the top of the support 100, and the tank 300 is internally provided with a cavity. Two first discs 600 are arranged in the cavity of the tank 300, as shown in Figure 3 A plurality of graphite tubes 700 are arranged between the two first discs 600. The graphite tube 700 is internally provided with a through hole for accommodating a graphite material column. The operator inserts the graphite material column into the through hole one by one and makes the end faces abut together, which is convenient for subsequent graphite treatment. In order to limit the position of the graphite material column in the through hole of the graphite tube 700, as shown in Figure 4 The two ends of the graphite tube 700 respectively penetrate the outer surfaces of the two first discs 600. A plurality of blocks 800 are arranged in the graphite tube 700. When the operator places the graphite material column, only the end part of the graphite material column needs to abut against the outer surface of the block 800. And as shown in Figure 1 and Figure 3As shown, the outer surface of the bracket 100 is hinged with a cover 200, the cover 200 is fixedly installed with a sealing plate 210 close to the inner wall of the tank body 300, the sealing plate 210 is flat with the end face of the graphite pipe 700, when the graphite material column is placed, by covering the cover 200, the sealing plate 210 is used to resist the end face of the graphite material column at one end of the cover 200, so as to limit the position of the graphite material column, and because the block 800 is arranged to be movable along the central axis direction of the graphite pipe 700, when the sealing plate 210 resists the end face of the graphite material column, the graphite material column will slide in the through hole of the graphite pipe 700, so that the end face of the graphite material column is always in contact with the surface of the sealing plate 210, through the arrangement, when the graphite material column is heated and shrinks, the block 800 can always resist the graphite material column between the block 800 and the sealing plate 210, so as to avoid the gap between the graphite material columns, which causes the poor conductivity of the subsequent current, thereby affecting the production of graphite.

[0044] It should be noted that the graphite material column in the graphite pipe 700 is uniformly heated by the electrical connection between the block 800 and the sealing plate 210 and the external power supply.

[0045] In order to enable the block 800 to be connected with the external power supply, as shown, Figure 6 As shown, the outer surface of one side of the block 800 is provided with a connecting column 810, the first rod body 1000 is arranged in the cavity of the tank body 300, the first rod body 1000 is arranged to be electrically connected with the connecting column 810 when the bottom end thereof is in contact with the outer surface of the connecting column 810, and the electrical connection between the first rod body 1000 and the connecting column 810 is disconnected when the first rod body 1000 is separated from the outer surface of the connecting column 810, by the up and down movement of the first rod body 1000, the electrical connection between the connecting column 810 is switched, so that the power on and off of the block 800 can be controlled.

[0046] Because the graphite material column has a certain diameter, the heating and temperature rising speed of the inside and outside is different, in order to make the graphite material column be uniformly graphitized, intermittent heating is needed, as shown, Figure 5As shown, the cavity of the tank body 300 is rotatably installed with a shaft body 500, the shaft body 500 penetrates the center of the two first disc bodies 600 and is fixedly connected therewith, and the two first disc bodies 600 can intermittently rotate 90° with the central axis of the tank body 300 as the rotation center. When the two first disc bodies 600 rotate, they can drive the graphite pipes 700 to rotate with the central axis of the shaft body 500 as the rotation center. Through this arrangement, the plurality of connecting columns 810 intermittently contact the bottom end of the first rod body 1000, thereby intermittently heating the graphitized material column inside the plurality of graphite pipes 700. At the same time, through this arrangement, when the graphitized material column shrinks after being heated, the graphite pipe 700 will drive the graphitized material column to shake inside it, so that the end faces of the two adjacent graphitized material columns rub against each other. At this time, when the block body 800 abuts against the graphitized material column, the shaking can make the end faces of the two adjacent graphitized material columns tightly abut, avoiding the particles of the material that fall off due to shrinkage from being clamped between the end faces, thereby causing the current conductivity between the graphitized material columns to deteriorate. Specifically, in order to make the two first disc bodies 600 rotate, as shown in Figure 2 As shown, the outer surface of the bracket 100 is fixedly installed with a servo motor 400, one end of the shaft body 500 penetrates the outer surface of the tank body 300, and the output end of the servo motor 400 is fixedly connected with the rotation center of one end of the shaft body 500. Through the intermittent rotation of the output end of the servo motor 400, the shaft body 500 is driven to rotate, thereby making the shaft body 500 drive the two first disc bodies 600 to rotate.

[0047] In order to make the block body 800 always abut against the graphitized material column, as shown in Figure 4 and Figure 8 As shown, the outer surface of the shaft body 500 close to one end of the block body 800 is fixedly installed with a second disc body 900, the other end of the connecting column 810 penetrates the outer surface of the second disc body 900, the outer surface of the connecting column 810 is sleeved with a second spring 1700, one end of the second spring 1700 is fixedly connected with the outer surface of one side of the second disc body 900, and the other end of the second spring 1700 is fixedly connected with the outer surface of the connecting column 810. Through the elastic force of the second spring 1700, the block body 800 always abuts against the graphitized material column.

[0048] After the graphitized material column is preheated, it needs to be finally heated at high temperature to realize graphitization production, as shown in Figure 6As shown, the outer circumferential surface of the shaft body 500 away from the one end of the block body 800 is equidistantly provided with a plurality of groove bodies 510, the inner walls of the plurality of groove bodies 510 are slidably installed with a sliding block 1200, the outer surface of the sliding block 1200 is fixedly installed with a second rod body 1100, the top end of the second rod body 1100 is abutted with the end face of the connecting column 810, the second rod body 1100 is separately communicated with the external power supply, so that the second rod body 1100 can energize each block body 800 through the connecting column 810, thereby realizing the heating of the graphitized material column, specifically, in order to make the top end of the second rod body 1100 abutted with the end face of the connecting column 810, as shown, Figure 6 As shown, the inside of the groove body 510 is provided with a first spring 1300, one end of the first spring 1300 is fixedly connected with the end face of one end of the sliding block 1200, the other end of the first spring 1300 is fixedly connected with the inner wall of one end of the groove body 510, through the elastic force of the first spring 1300, the top end of the second rod body 1100 is abutted with the end face of the connecting column 810.

[0049] Because the bottom end of the first rod body 1000 can abut with the outer surface of the connecting column 810, in order to realize stable abutment, as shown, Figure 3 and Figure 8 As shown, the top end of the first rod body 1000 penetrates through the outer surface of the tank body 300 and is slidably installed, the top end of the first rod body 1000 is fixedly installed with a cross rod, the lower surface of the cross rod is fixedly connected with a tension spring 1400, the bottom end of the tension spring 1400 is fixedly connected with the outer surface of the tank body 300, through the elastic force of the tension spring 1400, the bottom end of the first rod body 1000 is more stable in abutment with the connecting column 810.

[0050] In actual use, in order to make the connecting column 810 abut with the lower surface of the first rod body 1000 when the graphite pipe 700 rotates, as shown, Figure 7 The bottom end of the first rod body 1000 is provided with a transition arc angle, and the outer surface of the connecting column 810 is an arc surface.

[0051] Because the operator sometimes uses large force when placing the graphitized material column, which may cause the graphitized material column to collapse, at this time, the broken material between the end faces of two adjacent graphitized material columns causes the end faces of two adjacent graphitized material columns to be unable to completely fit, thereby affecting the conductivity of the current, in order to timely find this problem, as shown, Figure 7 , Figure 9 As shown, the inside of the first rod body 1000 is provided with a through groove, the inner wall of the through groove is slidably inserted with a column body 2000, the bottom end of the first rod body 1000 is provided with a mounting groove, the inner walls of the mounting groove are rotatably installed with a rotating shaft 1800, as shown, Figure 10 and Figure 11As shown, the protruding part 1810 is fixedly installed on the outer surface of the rotating shaft 1800 in the mounting groove, the V-shaped opening 2010 is arranged on the outer surface of the rotating shaft 1800, and the protruding part 1810 is arranged in the V-shaped opening 2010. When the rotating shaft 1800 rotates, the protruding part 1810 is driven to rotate downward. At this time, the protruding part 1810 drives the column body 2000 to slide downward by cooperating with the V-shaped opening 2010. Because the bottom end of the column body 2000 penetrates the end surface of the first rod body 1000 and abuts against the outer surface of the connecting column 810, when the column body 2000 moves downward, the first rod body 1000 moves upward relative to the connecting column 810, so that the first rod body 1000 is separated and the electrical connection is released, thereby avoiding discharging and heating the graphite material column.

[0052] When the end surfaces of the graphite material columns cannot be completely attached, in order to enable the rotating shaft 1800 to rotate, as shown, Figure 7 As shown, the connecting rod 1900 is fixedly connected to one end of the rotating shaft 1800 and penetrates the outer surface of the first rod body 1000, and the connecting rod 1900 is arranged at an inclined angle with the central axis of the first rod body 1000. The first stop block 1500 is fixedly installed on the top end of the second rod body 1100 and abuts against the outer surface of the connecting rod 1900. When the end surfaces of the graphite material columns cannot be completely attached due to the fragments, the connecting column 810 is moved in the direction close to the sliding block 1200. At this time, the second rod body 1100 is driven by the connecting column 810 and moves in the direction close to the sliding block 1200. Because the first stop block 1500 rotates around the central axis of the shaft body 500 by cooperating with the sliding block 1200 and the second rod body 1100, when the first stop block 1500 rotates, the bottom end of the connecting rod 1900 is first abutted, so that when the first stop block 1500 continues to rotate, the rotating shaft 1800 is driven to rotate by the connecting rod 1900. When the rotating shaft 1800 rotates, the protruding part 1810 is driven to rotate downward. At this time, the protruding part 1810 drives the column body 2000 to slide downward by cooperating with the V-shaped opening 2010. Because the top end of the column body 2000 penetrates the top of the first rod body 1000 and the scale mark 2020 is arranged in the first rod body 1000, when the column body 2000 moves downward, the scale mark 2020 is hidden in the first rod body 1000. At this time, the operator can directly observe whether there are fragments between the end surfaces of two adjacent graphite material columns in the graphite tube 700 and then timely process.

[0053] In order to avoid that the graphite material column in the graphite tube 700 is not heated to a sufficient preheating temperature, as shown, Figure 7As shown, the outer surface of the first rod body 1000 near the bottom end is fixedly provided with a second block 1600, the outer surface of the second block 1600 is provided with a notch 1610, the connecting rod 1900 protrudes from the outer surface of the second block 1600 (to avoid interfering with the movement of the first block 1500), when the preheating temperature of the graphitization material column is not enough, the shrinkage degree is smaller, at this time, the first block 1500 is still abutted against the outer surface of one side of the second block 1600, thereby limiting the subsequent intermittent rotation of the servo motor 400, avoiding that the preheating temperature of the graphitization material column is not enough, leading to uneven graphitization. When the preheating temperature of the graphitization material column is enough, the shrinkage degree completely reaches the expected value, at this time, the first block 1500 will move to the position of the notch 1610 along with the movement of the second rod body 1100, thereby no longer abutting against the outer surface of the second block 1600, at this time, the servo motor 400 can continue to drive the two first disc bodies 600 to rotate 90°.

[0054] In order for the operator to directly see whether the preheating temperature of the graphitization material column is enough and whether the shrinkage degree of the graphitization material column can reach the expected value, as shown in Figure 9 and Figure 11 As shown, the outer surface of the first rod body 1000 near the first block 1500 is slidably provided with a sliding frame 2100, one end of the sliding frame 2100 is fixedly connected with a guide column 2110, the outer surface of the column body 2000 near the bottom end is through-provided with a guide groove 2030, the guide column 2110 is slidably installed with the inner wall of the guide groove 2030, an inclination angle is arranged between the guide groove 2030 and the column body 2000, the other end of the sliding frame 2100 penetrates through the outer surface of the first rod body 1000, as shown in Figure 12 As shown, the inner wall of the other end of the sliding frame 2100 is fixedly connected with a third spring 2200, the other end of the third spring 2200 is fixedly connected with the outer surface of the first rod body 1000, when the shrinkage degree of the graphitization material column reaches the expected value, the first block 1500 will move along with the connecting column 810 in the direction of the graphite tube 700, at this time, the first block 1500 will press the other end of the sliding frame 2100, thereby driving the sliding frame 2100 to move close to the column body 2000, at this time, through the cooperation of the guide column 2110 and the guide groove 2030, the column body 2000 is moved upward, since the top end of the column body 2000 is provided with a scale mark 2020, so the scale mark 2020 will stretch out a height of scale, the operator can directly see.

[0055] The above shows and describes the basic principles and main features of the present application and the advantages of the present application. Those skilled in the art should understand that the present application is not limited to the above-mentioned embodiments, and the above-mentioned embodiments and descriptions in the specification are only to illustrate the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed present application.

Claims

1. A graphitization purification device of a lithium battery negative electrode material, characterized by, The utility model relates to a graphite tube type carbon material production device, including: A support (100) is arranged on the horizontal ground; A tank body (300) is arranged on the top of the support (100), and a cavity is arranged in the tank body (300); Two first disc bodies (600) are arranged in the cavity of the tank body (300), and can rotate around the central axis of the tank body (300); A plurality of graphite tubes (700) are arranged between the two first disc bodies (600), the graphite tube (700) is internally provided with a through hole for accommodating a column of graphitized material, and the two ends of the graphite tube (700) respectively penetrate the outer surfaces of the two first disc bodies (600); A plurality of blocks (800) are respectively arranged in the graphite tubes (700), the block (800) is arranged to be movable along the central axis direction of the graphite tube (700), and the outer surface of one side of the block (800) is provided with a connecting column (810); A first rod body (1000) is arranged in the cavity of the tank body (300), and the first rod body (1000) is arranged to be electrically connected with the connecting column (810) when the bottom end of the first rod body (1000) abuts against the outer surface of the connecting column (810), and the electrical connection between the first rod body (1000) and the connecting column (810) is disconnected when the first rod body (1000) is separated from the outer surface of the connecting column (810). The cavity of the tank body (300) is rotatably provided with a shaft body (500), the shaft body (500) penetrates the center of the two first disc bodies (600) and is fixedly connected with the two first disc bodies (600), the outer surface of the support (100) is fixedly provided with a servo motor (400), one end of the shaft body (500) penetrates the outer surface of the tank body (300), the output end of the servo motor (400) is fixedly connected with the rotation center of one end of the shaft body (500), the outer surface of one end of the shaft body (500) close to the block body (800) is fixedly provided with a second disc body (900), the other end of the connecting column (810) penetrates the outer surface of the second disc body (900), the outer surface of the connecting column (810) is sleeved with a second spring (1700), one end of the second spring (1700) is fixedly connected with the outer surface of one side of the second disc body (900), the other end of the second spring (1700) is fixedly connected with the outer surface of the connecting column (810), the circumferential outer surface of one end of the shaft body (500) away from the block body (800) is equidistantly provided with a plurality of groove bodies (510), the inner walls of the plurality of groove bodies (510) are all slidably provided with sliding blocks (1200), the outer surface of the sliding block (1200) is fixedly provided with a second rod body (1100), the top end of the second rod body (1100) abuts against the end face of the connecting column (810), the inside of the groove body (510) is provided with a first spring (1300), one end of the first spring (1300) is fixedly connected with the end face of one end of the sliding block (1200), the other end of the first spring (1300) is fixedly connected with the inner wall of one end of the groove body (510), the outer surface of the support (100) is hingedly provided with a cover body (200), the inner wall of the cover body (200) close to the tank body (300) is fixedly provided with a sealing plate (210), the sealing plate (210) is flush with the end face of the graphite pipe (700).

2. The graphitization purification device for lithium battery negative materials according to claim 1, characterized in that, The top end of the first rod body (1000) penetrates the outer surface of the tank body (300) and is slidably provided with the tank body (300), the top end of the first rod body (1000) is fixedly provided with a cross rod, the lower surface of the cross rod is fixedly connected with a tension spring (1400), the bottom end of the tension spring (1400) is fixedly connected with the outer surface of the tank body (300).

3. The graphitization purification device for lithium battery negative materials according to claim 2, characterized in that, The inside of the first rod body (1000) is provided with a through groove, the inner wall of the through groove is slidably provided with a column body (2000), the bottom end of the column body (2000) penetrates the end face of the first rod body (1000) and abuts against the outer surface of the connecting column (810), the bottom end of the first rod body (1000) is provided with a mounting groove, the inner walls of the mounting groove are rotatably provided with a rotating shaft (1800), the outer surface of the rotating shaft (1800) located in the mounting groove is fixedly provided with a protruding portion (1810), the outer surface of the column body (2000) close to the rotating shaft (1800) is provided with a V-shaped opening (2010), the protruding portion (1810) is arranged in the inside of the V-shaped opening (2010).

4. The graphitization purification device for lithium battery negative materials according to claim 3, characterized in that, One end of the rotating shaft (1800) penetrates the outer surface of the first rod body (1000) and is fixedly connected with a connecting rod (1900), and the connecting rod (1900) is provided with an inclined angle with the central axis of the first rod body (1000).

5. The graphitization purification apparatus for lithium battery anode materials according to claim 4, characterized in that, The top end of the second rod body (1100) is fixedly installed with a first stop block (1500), the first stop block (1500) abuts against the outer surface of the connecting rod (1900), the outer surface of the first rod body (1000) close to the bottom end is fixedly installed with a second stop block (1600), the outer surface of the second stop block (1600) is provided with a notch (1610), and the connecting rod (1900) protrudes from the outer surface of the second stop block (1600).

6. The graphitization purification apparatus for lithium battery anode materials according to claim 5, characterized in that, The outer surface of the first rod body (1000) close to the first stop block (1500) is slidably inserted with a sliding frame (2100), one end of the sliding frame (2100) is fixedly connected with a guide column (2110), the outer surface of the column body (2000) close to the bottom end is provided with a guide groove (2030) penetratingly, the guide column (2110) is slidably installed with the inner wall of the guide groove (2030), the guide groove (2030) and the column body (2000) are provided with an inclined angle, the other end of the sliding frame (2100) penetrates the outer surface of the first rod body (1000), the inner wall of the other end of the sliding frame (2100) is fixedly connected with a third spring (2200), the other end of the third spring (2200) is fixedly connected with the outer surface of the first rod body (1000), and the top end of the column body (2000) is provided with a scale mark (2020) penetratingly in the top of the first rod body (1000).

Images