A preparation device for graphene negative electrode material

Abstract

The present invention provides a preparation device for graphene negative electrode materials, comprising a grinding cylinder; a motor is provided at the rear end of the grinding cylinder, and the output end of the motor is transmission-connected to a grinding roller; the grinding cylinder is communicated with a top protruding pipe of a screening mechanism, the screening mechanism is hinged to the right end of a side door, and a drying and scattering mechanism is connected to the top of the grinding cylinder. The present invention provides a preparation device for graphene negative electrode materials, wherein the drying and scattering mechanism is provided, and graphene raw materials are discharged and transported through a bolt conveying mechanism, and at the same time, an electric heating pipe in the drying cylinder is heated to generate heat in a spiral pipe to dry the transported raw materials, and at the same time, a scattering roller is driven to rotate synchronously through a rotating shaft to scatter the transported raw materials, and the graphene raw materials are placed in a wet block to affect the grinding efficiency.

Description

Technical Field

[0001] The invention relates to the field related to graphene preparation, and in particular to a device for preparing a graphene negative electrode material. Background Art

[0002] Graphene battery is a new energy battery developed by utilizing the property of rapid and large-scale shuttling of lithium ions between the graphene surface and the electrode. In the process of preparing the negative electrode of the graphene battery, it is necessary to evenly mix epoxy resin, citric acid and alcohol solvents, heat up and carbonize under the action of inert gas, cool, wash with sodium hydroxide, dry, and grind to obtain carbon microspheres. The carbon microspheres are then mixed with polyvinyl alcohol and acetone to obtain modified carbon microspheres, which are one of the materials for the negative electrode of the graphene battery.

[0003] The document with the prior art publication number CN113117851B provides a graphene negative electrode material preparation device, which has a grinding and transport cavity opened inside a grinding box, a chassis is fixedly provided in the middle of the front side of the grinding box, a motor A is provided inside the chassis, the output end of the motor A passes through the outer wall of the grinding box and extends to the grinding and transport cavity and is coaxially connected with an auger shaft, and a plurality of cylindrical grinding shafts are linearly and evenly spaced on both sides of the upper and lower sides of the auger shaft gap located at the front, and a plurality of grinding protrusions are annularly and evenly spaced on the outer side of the circumference of the cylindrical grinding shaft. The tight fit between the structures allows the graphene to be ground and formed multiple times through the rotation of the cylindrical grinding shaft, and at the same time, it is transported through the auger shaft during the grinding process, which not only improves the grinding efficiency, but also ensures the grinding effect, improves the effect of later use in the battery, and avoids the situation of low service life and factory failure.

[0004] Although the device has many beneficial effects, the following problems still exist: the device directly uses an auger shaft for transportation, but this is only suitable for dry graphene raw materials. When the graphene raw materials are wet and clumpy, the grinding efficiency will be greatly impaired, making the graphene obtained later impure, greatly reducing the service life of the battery. In view of this, we propose a preparation device for graphene negative electrode materials. Summary of the invention

[0005] In order to solve the above technical problems, the object of the present invention is to provide a device for preparing graphene negative electrode materials.

[0006] Based on this, the present invention proposes a preparation device for graphene negative electrode material, comprising a grinding cylinder;

[0007] A motor is provided at the rear end of the grinding cylinder, and the output end of the motor is transmission-connected to the grinding roller;

[0008] The grinding cylinder is connected to the top protruding pipe of the screening mechanism, the screening mechanism is hinged to the right end of the side door, and the top of the grinding cylinder is connected to a drying and scattering mechanism;

[0009] The drying and dispersing mechanism comprises a drying cylinder, a DSP controller, a temperature sensor, a spiral conveying mechanism, a connecting pipe, a rotating shaft, bevel gear one, bevel gear two, and a supporting frame. The bottom of the supporting frame is fixed to the grinding cylinder. There are two groups of supporting frames, which are arranged opposite to each other along the left and right sides of the drying cylinder. The right end of the drying cylinder is equipped with a DSP controller, and the upper right end of the DSP controller is embedded with a temperature sensor. A spiral conveying mechanism is fixed inside the drying cylinder. The drying cylinder and the top of the connecting pipe are an integral structure and are connected. The rotating shaft is movably connected to the bottom of the drying cylinder, and the rotating shaft is connected to the top of bevel gear one for transmission. The bevel gear one is meshed with the top front end of bevel gear two for transmission, and the bevel gear two rotates synchronously with the rear end of the grinding roller. A spiral electric heating tube is arranged inside the drying cylinder, and a dispersing roller is arranged on the rotating shaft to facilitate the dispersing of the material.

[0010] Optionally, the spiral conveying mechanism includes a feeding hopper, a support rod, a spiral pipe, a discharge port, and a vibration motor. The support rod is fixed to the inner lower end of the drying cylinder, the feeding hopper is fixedly connected to the top of the support rod, the feeding hopper and the top of the spiral pipe are an integral structure and are connected, and a discharge port is opened at the lower right end of the spiral pipe.

[0011] Optionally, the spiral pipe is arranged in a spiral shape with a cavity inside. The spiral pipe is connected to the front end bolts of the vibration motor, and the material is placed on the inner wall of the spiral pipe to be shaken off. The top of the spiral pipe is provided with air holes to facilitate the discharge of moisture.

[0012] Optionally, a vibration damping mechanism is provided on the support rod, the number of the vibration damping mechanisms is greater than two groups, and the front ends of the vibration damping mechanisms are connected to the spiral pipe. The vibration damping mechanism includes a fixed sleeve, an movable cavity, and a spring buffer. The middle part of the fixed sleeve is fixed to the support rod, and an movable cavity is opened at the front end of the fixed sleeve. One end of the spring buffer is fixed to the inner side of the movable cavity, and the other end of the spring buffer is connected to the spiral pipe. A feeding mechanism is provided at the inner right end of the feeding hopper.

[0013] Optionally, the feeding mechanism includes a movable shaft, a rotating disk, a supporting mechanism, a swinging plate, and a receiving shaft. The movable shaft is transmission-connected to the bottom of the rotating disk. The rotating disk is in contact with the right end of the supporting mechanism. The supporting mechanism is rotationally connected to the lower end of the swinging plate. The swinging plate is rotationally connected to the inner right end of the feeding hopper by a receiving shaft, and the movable shaft rotates synchronously with the rotating shaft.

[0014] Optionally, the supporting mechanism includes a first positioning seat, a guide seat, a second positioning seat, a push rod, a ball, a push block, a return spring, and a rotating rod. The first positioning seat is fixed to the inner right end of the feeding hopper, and the second positioning seat and the first positioning seat are relatively arranged on the left and right sides of the guide seat, and the guide seat is respectively connected to the second positioning seat and the first positioning seat. The push rod is slidingly matched with the interior of the first positioning seat, the push rod is in contact with the right end of the rotating disk, the ball is slidingly matched with the inner wall of the guide seat, the push block is elastically connected to the upper left end of the second positioning seat by a return spring, and the push block is rotatably connected to the lower end of the swing plate by a rotating rod.

[0015] Optionally, two groups of balls are provided and are embedded in the guide seat, respectively supported by the left end of the push rod and the right end of the push block. The left and right sides of the push rod are both arc-shaped structures, which is convenient for pushing the balls. The right end of the push rod is in contact with the rotating disk.

[0016] Optionally, the lower right end of the swing plate is tilted downward.

[0017] Optionally, the movable shaft is movably connected to the middle portion of the support rod, and the movable shaft passes through the middle portion of the support rod.

[0018] Optionally, the screening mechanism includes a connecting cylinder, a discharge valve, a servo motor, a screen fence, and a connecting rod. The top raised pipe of the connecting cylinder is connected to the grinding cylinder. A discharge valve is provided at the right end of the connecting cylinder. The connecting cylinder is fixed to the bottom of the servo motor. The servo motor is connected to the bottom of the screen fence by a connecting rod, which is convenient for filtering the graphene raw materials and facilitating subsequent processing of the graphene raw materials.

[0019] Optionally, the temperature sensor, electric heating tube, and vibration motor are all electrically connected to the DSP controller, the DSP controller is the TMS320F281 series, the temperature sensor is the LM-410 series, and the specific model is customized according to actual use. The electric heating tube is a fin heating tube.

[0020] The present invention has the following advantages: The present invention provides a graphene negative electrode material preparation device through improvement, which has the following improvements compared with the same type of equipment:

[0021] Advantage 1: The present invention provides a preparation device for graphene negative electrode materials. By setting up a drying and breaking up mechanism, the graphene raw materials are discharged and transported through a bolt conveying mechanism. At the same time, the electric heating tube in the drying cylinder is heated to generate heat in the spiral pipe to dry the transported raw materials. At the same time, the breaking up roller is driven by the rotating shaft to rotate synchronously to break up the transported raw materials, so that the graphene raw materials are placed in wet blocks, which affects the grinding efficiency.

[0022] Advantage 2: The present invention provides a preparation device for graphene negative electrode materials. By setting up a spiral conveying mechanism and distributing the spiral pipe in a spiral shape, the quantity and length of the material can be effectively increased to ensure that the material is dried for a long time. At the same time, the hot air generated during drying can be discharged through the air holes at the top of the spiral pipe. A vibration motor is added to vibrate the spiral pipe to prevent the material from sticking and to prevent the material from remaining in the spiral pipe. When the spiral pipe vibrates, the spring buffer can assist in vibration reduction to prevent the polarization force of the spiral pipe from being too large.

[0023] Advantage 3: The present invention provides a device for preparing graphene negative electrode materials. By setting up a feeding mechanism, the movable shaft rotates synchronously with the rotating shaft, so that the movable shaft drives the rotating disk to move eccentrically and contact the right end of the push rod, so that the push rod pushes the push block to move to the left end in the second positioning seat through the ball, and presses the reset spring to produce deformation, so that the push block drives the swing plate to swing through the rotating rod. As the rotating disk continues to rotate, when the support for the push rod is released, the elastic potential energy of the deformation is restored by the reset spring to drive the push block to the right end to return to the position of the raw material, and so on and so forth, thereby realizing the reciprocating swing of the swing plate and preventing the accumulation of raw materials during discharge. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0025] Figure 2 It is a schematic diagram of the partial cross-sectional structure of the grinding cylinder of the present invention;

[0026] Figure 3 It is a schematic diagram of the cross-sectional structure of the screening mechanism of the present invention;

[0027] Figure 4 This is a schematic diagram of the three-dimensional structure of the drying and breaking up mechanism of the present invention;

[0028] Figure 5 It is a schematic diagram of the three-dimensional structure of the spiral conveying mechanism of the present invention;

[0029] Figure 6 It is a schematic diagram of the three-dimensional structure of the vibration reduction mechanism of the present invention;

[0030] Figure 7 It is a schematic diagram of the cross-sectional structure of the spiral conveying mechanism of the present invention;

[0031] Figure 8 It is a schematic diagram of the cross-sectional structure of the feeding mechanism of the present invention;

[0032] Fig. 9 It is a schematic diagram of the cross-sectional structure of the top support mechanism of the present invention.

[0033] Description of reference numerals: grinding cylinder 1, motor 2, grinding roller 3, screening mechanism 4, side door 5, drying and scattering mechanism 6, drying cylinder 61, DSP controller 62, temperature sensor 63, screw conveying mechanism 64, connecting pipe 65, rotating shaft 66, bevel gear 1 67, bevel gear 2 68, support frame 69, feeding hopper 641, support rod 642, spiral pipe 643, discharge port 644, vibration motor 645, fixing sleeve 64 61, movable chamber-6462, spring buffer-6463, movable shaft-6a, rotating disk-6b, supporting mechanism-6c, swing plate-6d, receiving shaft-6e, first positioning seat-6c1, guide seat-6c2, second positioning seat-6c3, push rod-6c4, ball-6c5, push block-6c6, return spring-6c7, rotating rod-6c8, connecting cylinder-41, discharge valve-42, servo motor-43, screen fence-44, connecting rod-45, breaking roller-661. DETAILED DESCRIPTION

[0034] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0035] Furthermore, in the description of the present invention, unless otherwise specified, “plurality” means two or more.

[0036] For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0037] The specific implementation of the present invention is further described in detail below in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0038] Embodiment 1:

[0039] Please refer to Figure 1-3The present embodiment provides a preparation device for graphene negative electrode materials. A motor 2 is provided at the rear end of the grinding cylinder 1. The output end of the motor 2 is transmission-connected to the grinding roller 3. The grinding cylinder 1 is connected to the top protruding pipeline of the screening mechanism 4. The screening mechanism 4 is hinged to the right end of the side door 5. The top of the grinding cylinder 1 is connected to a drying and scattering mechanism 6. The screening mechanism 4 includes a connecting cylinder 41, a discharge valve 42, a servo motor 43, a sieve fence 44, and a connecting rod 45. The top protruding pipeline of the connecting cylinder 41 is connected to the grinding cylinder 1. The right end of the connecting cylinder 41 is provided with a A discharge valve 42 is provided, and the connecting cylinder 41 is fixed to the bottom of the servo motor 43. The servo motor 43 is connected to the bottom of the screen fence 44 by a connecting rod 45 for transmission, so as to facilitate the filtering of the graphene raw materials and the subsequent processing of the graphene raw materials. The temperature sensor 63, the electric heating tube, and the vibration motor 645 are all electrically connected to the DSP controller 62. The DSP controller 62 is the TMS320F281 series, and the temperature sensor 63 is the LM-410 series. The specific model is customized according to actual use, and the electric heating tube is a fin heating tube.

[0040] Please refer to Figure 4 , 5 7. This embodiment provides a preparation device for graphene negative electrode materials. The drying and breaking up mechanism 6 includes a drying cylinder 61, a DSP controller 62, a temperature sensor 63, a spiral conveying mechanism 64, a connecting pipe 65, a rotating shaft 66, a bevel gear 1 67, a bevel gear 2 68, and a support frame 69. The bottom of the support frame 69 is fixed to the grinding cylinder 1. The support frame 69 is provided with two groups, which are arranged opposite to each other along the left and right sides of the drying cylinder 61. The right end of the drying cylinder 61 is installed with a DSP controller 62, and the upper right end of the DSP controller 62 is embedded with a temperature sensor. A spiral conveying mechanism 64 is fixed inside the drying cylinder 61. The drying cylinder 61 and the top of the connecting pipe 65 are an integral structure and are connected. The rotating shaft 66 is movably connected to the bottom of the drying cylinder 61. The rotating shaft 66 is connected to the top of the bevel gear 1 67 for transmission. The bevel gear 1 67 is meshed with the top front end of the bevel gear 2 68 for transmission. The bevel gear 2 68 rotates synchronously with the rear end of the grinding roller 3. A spiral electric heating tube is arranged inside the drying cylinder 61. A scattering roller 661 is arranged on the rotating shaft 66 to facilitate the scattering of the material.

[0041] Furthermore, the spiral conveying mechanism 64 includes a feeding hopper 641, a support rod 642, a spiral pipe 643, a discharge port 644, and a vibration motor 645. The support rod 642 is fixed to the inner lower end of the drying cylinder 61, the feeding hopper 641 is fixedly connected to the top of the support rod 642, the feeding hopper 641 and the top of the spiral pipe 643 are an integral structure and are connected, a discharge port 644 is provided at the lower right end of the spiral pipe 643, the spiral pipe 643 is spirally arranged, and the interior is cavity-shaped, the spiral pipe 643 is connected to the front end bolts of the vibration motor 645, the material is placed and adhered to the inner wall of the spiral pipe 643, and it is shaken off, and the top of the spiral pipe 643 is provided with air holes to facilitate the discharge of moisture.

[0042] Please refer to Figure 8 The present embodiment provides a preparation device for graphene negative electrode materials. The feeding mechanism 647 includes a movable shaft 6a, a rotating disk 6b, a supporting mechanism 6c, a swinging plate 6d, and a receiving shaft 6e. The movable shaft 6a is transmission-connected to the bottom of the rotating disk 6b. The rotating disk 6b contacts the right end of the supporting mechanism 6c. The supporting mechanism 6c is rotationally connected to the lower end of the swinging plate 6d. The swinging plate 6d is rotationally connected to the inner right end of the feeding hopper 641 by a receiving shaft 6e. The movable shaft 6a rotates synchronously with the rotating shaft 66.

[0043] Please refer to Fig. 9 , the present embodiment provides a preparation device of graphene negative electrode material, the supporting mechanism 6c comprises a first positioning seat 6c1, a guide seat 6c2, a second positioning seat 6c3, a push rod 6c4, a ball 6c5, a push block 6c6, a reset spring 6c7, and a rotating rod 6c8, the first positioning seat 6c1 is fixed to the inner right end of the feeding hopper 641, the second positioning seat 6c3 and the first positioning seat 6c1 are arranged on the left and right sides of the guide seat 6c2, and the guide seat 6c2 is respectively connected with the second positioning seat 6c3 and the first positioning seat 6c1, the push rod 6c4 is slidably matched with the inner part of the first positioning seat 6c1, the push rod 6c4 is in contact with the right end of the rotating disk 6b, the ball 6c5 is fixed to the guide seat 6c2, and the push rod 6c4 is in contact with the right end of the rotating disk 6b, and the ball 6c5 is fixed to the guide seat 6c2. The inner wall of the seat 6c2 is slidably matched, the push block 6c6 is elastically connected to the upper left end of the second positioning seat 6c3 by a return spring 6c7, the push block 6c6 is rotatably connected to the lower end of the swing plate 6d by a rotating rod 6c8, and there are two groups of ball 6c5, which are both embedded in the guide seat 6c2, and are respectively supported by the left end of the push rod 6c4 and the right end of the push block 6c6. The left and right sides of the push rod 6c4 are both arc-shaped structures, which are convenient for pushing the ball 6c5. The right end of the push rod 6c4 is in contact with the rotating disk 6b, and the lower right end of the swing plate 6d is tilted downward. The movable shaft 6a is movably connected to the middle part of the support rod 642, and the movable shaft 6a runs through the middle part of the support rod 642.

[0044] Embodiment 2:

[0045] Please refer to Figure 6 The present embodiment provides a preparation device for graphene negative electrode materials, a vibration reduction mechanism 646 is arranged on the support rod 642, the number of the vibration reduction mechanism 646 is greater than two groups, and the front end of the vibration reduction mechanism 646 is connected to the spiral pipe 643, the vibration reduction mechanism 646 includes a fixed sleeve 6461, an active cavity 6462, and a spring buffer 6463, the middle part of the fixed sleeve 6461 is fixed to the support rod 642, the front end of the fixed sleeve 6461 is provided with an active cavity 6462, one end of the spring buffer 6463 is fixed to the inner side of the active cavity 6462, and the other end of the spring buffer 6463 is connected to the spiral pipe 643, and a feeding mechanism 647 is arranged at the right end inside the feeding hopper 641.

[0046] The present invention provides a preparation device for graphene negative electrode material through improvement, and its working principle is as follows;

[0047] When in use, the graphene negative electrode material preparation device is placed horizontally, and then the graphene raw material is discharged through the feeding hopper 641;

[0048] At the same time, the heating tube in the drying cylinder 61 is powered on to work, generating heat, so that heat is generated in the spiral pipe 643 to dry the transported raw materials, and the spiral pipe 643 is distributed in a spiral shape, which can effectively increase the quantity and length of the materials, ensuring that the materials are dried for a long time, and the hot air generated during drying can be discharged through the air holes on the top of the spiral pipe 643, and a vibration motor 645 is added to vibrate the spiral pipe 643 to prevent the materials from sticking and remaining in the spiral pipe 643. When the spiral pipe 643 vibrates, the spring buffer 6463 can assist in vibration reduction to prevent the polarization force of the spiral pipe 643 from being too large.

[0049] At the same time, the motor 2 drives the grinding roller 3 to rotate, and the grinding roller 3 drives the bevel gear 2 68 to rotate synchronously, so that the bevel gear 68 drives the rotating shaft 66 to rotate through the bevel gear 1 67, and the movable shaft 6a rotates synchronously with the rotating shaft 66, so that the movable shaft 6a drives the rotating disk 6b to move eccentrically and contact the right end of the push rod 6c4, so that the push rod 6c4 pushes the push block 6c6 to move to the left end in the second positioning seat 6c3 through the ball 6c5, and presses the reset spring 6c7 to produce deformation, so that the push block 6c6 drives the swing plate 6d to swing through the rotating rod 6c8. As the rotating disk 6b continues to rotate, when the push rod 6c4 is released from the top support, the elastic potential energy of the deformation restored by the reset spring 6c7 drives the push block 6c6 to the right end to return to the position of the raw material, and so on and so forth, so as to realize the reciprocating swing of the swing plate 6d, thereby preventing the accumulation of raw materials during discharge;

[0050] Finally, the raw materials are discharged through the discharge port 644. During the discharge process, the rotating shaft 66 drives the scattering roller 661 to rotate synchronously to scatter the conveyed raw materials.

[0051] Next, the raw material enters the grinding cylinder 1, and is ground by the grinding roller 3. The raw material that meets the specifications is then discharged through the bottom of the grinding cylinder 1 and enters the connecting cylinder 41. The servo motor 43 drives the screen 44 and the connecting rod 45 to move centrifugally, so that the screen 44 screens the material. The graphene raw material is then discharged into the epoxy resin, citric acid and alcohol solvents and mixed evenly. Under the action of inert gas, the temperature is increased for carbonization. After cooling, the raw material is washed with sodium hydroxide, dried, and ground again after drying to obtain carbon microspheres. The carbon microspheres are then mixed with polyvinyl alcohol and acetone to obtain modified carbon microspheres, which are one of the materials for the negative electrode of the graphene battery.

[0052] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and substitutions can be made without departing from the technical principles of the present invention. These improvements and substitutions should also be regarded as the scope of protection of the present invention.

Claims

1. A preparation device for graphene negative electrode material, characterized in that: It comprises a grinding cylinder (1); A motor (2) is provided at the rear end of the grinding cylinder (1), and an output end of the motor (2) is drivingly connected to a grinding roller (3); The grinding cylinder (1) is connected to a raised pipe on the top of a screening mechanism (4), the screening mechanism (4) is hingedly connected to the right end of a side door (5), and a drying and scattering mechanism (6) is connected to the top of the grinding cylinder (1); The drying and breaking mechanism (6) comprises a drying cylinder (61), a DSP controller (62), a temperature sensor (63), a spiral conveying mechanism (64), a connecting pipe (65), a rotating shaft (66), a bevel gear 1 (67), a bevel gear 2 (68), and a support frame (69). The bottom of the support frame (69) is fixed to the grinding cylinder (1). The support frames (69) are provided in two groups and are arranged opposite to each other along the left and right sides of the drying cylinder (61). The right end of the drying cylinder (61) is equipped with a DSP controller (62). The DSP controller (62) A temperature sensor (63) is embedded in the upper right end, a spiral conveying mechanism (64) is fixed inside the drying cylinder (61), the drying cylinder (61) and the top of the connecting pipe (65) are an integral structure and are connected, the rotating shaft (66) is movably connected to the bottom of the drying cylinder (61), the rotating shaft (66) is connected to the top of the bevel gear 1 (67), the bevel gear 1 (67) is meshed with the top front end of the bevel gear 2 (68), and the bevel gear 2 (68) rotates synchronously with the rear end of the grinding roller (3); The spiral conveying mechanism (64) comprises a feeding hopper (641), a support rod (642), a spiral pipe (643), a discharge port (644), and a vibration motor (645); the support rod (642) is fixed to the inner lower end of the drying cylinder (61); the feeding hopper (641) is fixedly connected to the top of the support rod (642); the feeding hopper (641) and the top of the spiral pipe (643) are an integral structure and are connected; and a discharge port (644) is provided at the lower right end of the spiral pipe (643); The support rod (642) is provided with a vibration reduction mechanism (646), the number of the vibration reduction mechanism (646) is greater than two groups, and the front end of the vibration reduction mechanism (646) is connected to the spiral pipe (643), the vibration reduction mechanism (646) comprises a fixed sleeve (6461), an active cavity (6462), and a spring buffer (6463), the middle part of the fixed sleeve (6461) is fixed to the support rod (642), the front end of the fixed sleeve (6461) is provided with an active cavity (6462), one end of the spring buffer (6463) is fixed to the inner side of the active cavity (6462), and the other end of the spring buffer (6463) is connected to the spiral pipe (643), and the inner right end of the feeding hopper (641) is provided with a feeding mechanism (647).

2. The device for preparing a graphene negative electrode material according to claim 1, characterized in that: The spiral pipe (643) is arranged in a spiral shape, and its interior is in a cavity shape. The spiral pipe (643) is connected to the front end of the vibration motor (645) with bolts.

3. The device for preparing a graphene negative electrode material according to claim 1, characterized in that: The feeding mechanism (647) includes a movable shaft (6a), a rotating disk (6b), a supporting mechanism (6c), a swinging plate (6d), and a receiving shaft (6e). The movable shaft (6a) is transmission-connected to the bottom of the rotating disk (6b). The rotating disk (6b) is in contact with the right end of the supporting mechanism (6c). The supporting mechanism (6c) is rotationally connected to the lower end of the swinging plate (6d). The swinging plate (6d) is rotationally connected to the inner right end of the feeding hopper (641) by using the receiving shaft (6e).

4. The device for preparing a graphene negative electrode material according to claim 3, characterized in that: The supporting mechanism (6c) comprises a first positioning seat (6c1), a guide seat (6c2), a second positioning seat (6c3), a push rod (6c4), a ball (6c5), a push block (6c6), a return spring (6c7), and a rotating rod (6c8); the first positioning seat (6c1) is fixed to the inner right end of the feeding hopper (641); the second positioning seat (6c3) and the first positioning seat (6c1) are arranged on the left and right sides of the guide seat (6c2) opposite to each other, and the guide seat (6c2) is respectively connected to the second positioning seat (6c3) is connected to the first positioning seat (6c1), the push rod (6c4) is slidably matched with the inside of the first positioning seat (6c1), the push rod (6c4) is in contact with the right end of the rotating disk (6b), the ball (6c5) is slidably matched with the inner wall of the guide seat (6c2), the push block (6c6) is elastically connected to the upper left end of the second positioning seat (6c3) by a return spring (6c7), and the push block (6c6) is rotatably connected to the lower end of the swing plate (6d) by a rotating rod (6c8).

5. The device for preparing a graphene negative electrode material according to claim 4, characterized in that: There are two groups of balls (6c5) in total, and both are embedded in the guide seat (6c2), and are respectively supported by the left end of the push rod (6c4) and the right end of the push block (6c6). The left and right sides of the push rod (6c4) are both arc-shaped structures.

6. The device for preparing a graphene negative electrode material according to claim 4, characterized in that: The lower right end of the swing plate (6d) is tilted downward.

7. The device for preparing a graphene negative electrode material according to claim 3, characterized in that: The movable shaft (6a) is movably connected to the middle portion of the support rod (642), and the movable shaft (6a) passes through the middle portion of the support rod (642).

8. The device for preparing a graphene negative electrode material according to claim 1, characterized in that: The screening mechanism (4) comprises a connecting cylinder (41), a discharge valve (42), a servo motor (43), a screen fence (44), and a connecting rod (45); a raised pipe on the top of the connecting cylinder (41) is connected to the grinding cylinder (1); a discharge valve (42) is provided at the right end of the connecting cylinder (41); the connecting cylinder (41) is fixed to the bottom of the servo motor (43); and the servo motor (43) is connected to the bottom of the screen fence (44) by means of a connecting rod (45).

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