Asphalt coating modification device for graphite negative electrode material production

Abstract

The asphalt coating modification device for graphite negative electrode material production comprises a bottom plate, the upper end of the bottom plate is fixedly connected with a heating box, the upper end of the bottom plate is symmetrically and fixedly connected with two supporting plates, the two supporting plates are each provided with a round opening, the inner sides of the two round openings are each provided with an annular sliding rail, and the annular sliding rails are fixedly connected with the heating box. A treatment barrel is jointly mounted on the inner sides of the two annular sliding rails, and a sealing door is formed in the upper side of the treatment barrel; and the atomization mechanism comprises a mounting frame, the high end of the mounting frame is connected to the right side of the right side supporting plate, a driving motor is mounted on the mounting frame, an output shaft of the driving motor is fixedly connected with a rotating disc, a connecting rod is rotationally connected to the eccentric position of the rotating disc, and a second piston cylinder is fixedly connected to the upper end of the bottom plate. In the actual use of the device, the actual environment friendliness is effectively improved, the coating effect is further improved, and the coating comprehensiveness is guaranteed.

Description

Technical Field

[0001] The invention relates to the field of graphite negative electrode material processing, and in particular to an asphalt coating modification device for producing graphite negative electrode materials. Background Art

[0002] Asphalt coating modification mainly involves coating a layer of asphalt on the surface of graphite negative electrode materials, and then cracking it at high temperature to form an amorphous carbon layer, thereby improving the electrochemical performance of graphite negative electrode materials. This amorphous carbon layer can constrain and buffer the volume expansion or structural damage of the active center of the negative electrode material, thereby maintaining the stability of the electrode material. At the same time, it can also prevent the graphite surface from directly contacting the electrolyte, inhibit the decomposition of the electrolyte, increase the battery capacity, improve the cycle performance, and increase the rate performance;

[0003] Among them, the atomization coating method is one of the coating methods. After the asphalt is heated and atomized, it is contacted with the graphite negative electrode material to achieve the purpose of coating. However, in the traditional operation process, using this method for coating, it is difficult for the asphalt to fully contact the atomized asphalt, resulting in the coating effect to be improved. In addition, after the asphalt is sprayed, in order to ensure the comprehensiveness of the spray, holes need to be opened on the coating device to achieve pressure relief, and the atomized asphalt is easily discharged directly to the outside with the gas, which not only causes waste, but also easily affects the surrounding environment. Summary of the invention

[0004] The purpose of the present invention is to solve the shortcomings of the prior art and to propose an asphalt coating and modification device for the production of graphite negative electrode materials. In actual use, the device effectively improves the actual environmental protection, and further enhances the coating effect, ensuring the comprehensiveness of the coating.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A graphite negative electrode material production asphalt coating modification device, comprising a bottom plate, the upper end of the bottom plate is fixedly connected to a heating box, the upper end of the bottom plate is symmetrically fixedly connected to two support plates, the two support plates are each provided with a circular opening, the inner sides of the two circular openings are each provided with an annular slide rail, a treatment cylinder is commonly provided on the inner sides of the two annular slide rails, and a sealing door is provided on the upper side of the treatment cylinder; an atomization mechanism, the atomization mechanism comprises a mounting frame connected at a high end to the right side of the right support plate, a driving motor is installed on the mounting frame, the output shaft of the driving motor is fixedly connected to a rotating disk, the eccentric portion of the rotating disk is rotatably connected to a connecting rod, the upper end of the bottom plate is fixedly connected to a second movable A plug cylinder, a second piston plate which can slide up and down is arranged in the second piston cylinder, the other end of the connecting rod is rotatably connected to the upper end of the second piston plate, the inner bottom space of the second piston cylinder is connected with the inner bottom of the heating box through the second one-way tube, the inner bottom space of the second piston cylinder is connected with the first one-way tube, hollow plates are installed on the left and right inner walls of the heating box, a plurality of holes are opened on the opposite sides of the two hollow plates, connecting tubes are connected on the opposite sides of the two hollow plates, and rotating joints are installed on the other ends of the two connecting tubes, and the rotating joint on the right side is connected with the other end of the first one-way tube; a rotating mechanism, the rotating mechanism is used to drive the treatment cylinder to rotate.

[0007] Preferably, filters are fixedly connected to opposite sides of the two hollow plates, the other end of the rotary joint on the left side is connected to an exhaust pipe, and the other end of the exhaust pipe is connected to the inner bottom space of the heating box.

[0008] Preferably, atomizing nozzles are installed in the plurality of hole bodies located on the right side.

[0009] Preferably, the rotating mechanism comprises a gear ring fixedly connected to the outside of the processing cylinder, and the output shaft of the driving motor is fixedly connected with a gear, and the gear is meshed with the gear ring.

[0010] Preferably, three flaps are fixedly connected to the inner side wall of the processing cylinder.

[0011] Preferably, an annular heating plate is fixedly connected to the inner wall of the heating box, a feeding port is opened at the inner top of the heating box, a sealing plug is installed on the feeding port, the inner top space of the heating box is connected to the outside through a pressure relief pipe, and a pressure relief valve is installed in the pressure relief pipe.

[0012] Preferably, a first piston cylinder is fixedly connected to the left inner wall of the heating box, the right side of the first piston cylinder is connected to the interior of the heating box, a first piston plate that can slide left and right is arranged in the first piston cylinder, the left side of the first piston plate is elastically connected to the left inner wall of the first piston cylinder by a spring, and a through opening is opened on the left inner wall of the first piston cylinder.

[0013] Preferably, one-way valves are installed inside the first one-way tube and the second one-way tube. The one-way valve in the first one-way tube flows in a one-way direction from the bottom space in the second piston cylinder to the connecting tube on the right side, and the one-way valve in the second one-way tube flows in a one-way direction from the bottom space in the heating box to the bottom space in the second piston cylinder.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. A one-way valve, connecting pipe and double hollow plate structure are set up. After the coating is completed, the excess gas discharged from the left hollow plate enters the asphalt liquid again, and the residual atomized asphalt is recovered by using the adsorption property of the asphalt liquid, which effectively avoids the waste of asphalt and environmental pollution, and conforms to the concept of green production.

[0016] 2. The processing cylinder is driven to rotate through the transmission mechanism of gears and gear rings, and the flip plate arranged inside continuously flips the graphite negative electrode material powder, ensuring that each particle of powder can fully contact with the atomized asphalt liquid, greatly enhancing the comprehensiveness and uniformity of the coating, and improving the consistency and stability of product quality.

[0017] 3. By utilizing the coordination of gears and gear rings, loading and unloading operations can be performed using only one sealing door.

[0018] In summary, the present invention not only significantly improves the coating quality and efficiency of graphite negative electrode materials, but also achieves maximum utilization of resources and friendly protection of the environment, providing an efficient and environmentally friendly solution for the production of new energy materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the structure of a bitumen coating and modification device for producing graphite negative electrode materials proposed by the present invention;

[0020] Figure 2 for Figure 1 A magnified image of point A;

[0021] Figure 3 for Figure 1 An enlarged view of the second piston cylinder;

[0022] Figure 4 is a side sectional view of the treatment barrel;

[0023] Figure 5 is a three-dimensional structural diagram of the first piston cylinder;

[0024] Figure 6 for Figure 5 sectional view of .

[0025] In the figure: 1 bottom plate, 2 heating box, 3 processing cylinder, 4 sealing door, 5 support plate, 6 atomizing nozzle, 7 round mouth, 8 annular slide rail, 9 annular heating plate, 10 first piston cylinder, 11 connecting pipe, 12 spring, 13 first piston plate, 14 through mouth, 15 feeding port, 16 sealing plug, 17 pressure relief pipe, 18 second piston cylinder, 19 mounting frame, 20 driving motor, 21 first one-way pipe, 22 second one-way pipe, 23 gear ring, 24 gear, 25 exhaust pipe, 26 rotary joint, 27 flip plate, 28 filter screen, 29 second piston plate, 30 connecting rod, 31 rotating disk, 32 hollow plate. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0027] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0028] Reference Figure 1-Figure 6 , a graphite negative electrode material production asphalt coating modification device, including a bottom plate 1, the upper end of the bottom plate 1 is fixedly connected to a heating box 2, the upper end of the bottom plate 1 is symmetrically fixedly connected to two support plates 5, the two support plates 5 are each provided with a circular opening 7, the inner sides of the two circular openings 7 are each provided with an annular slide rail 8, and the inner sides of the two annular slide rails 8 are jointly provided with a processing cylinder 3, here, by setting the annular slide rail 8, the actual contact friction force can be reduced, thereby ensuring the smoothness of the rotation of the processing cylinder 3, and the upper side of the processing cylinder 3 is provided with a sealing door 4, which is convenient for feeding and unloading operations;

[0029] Among them, it also includes an atomization mechanism, which includes a mounting frame 19 whose high end is connected to the right side of the right support plate 5, and a drive motor 20 is installed on the mounting frame 19. The drive motor 20 here adopts a servo motor. The servo motor can control the speed and has very accurate position accuracy. It can convert the voltage signal into torque and speed to drive the control object. The rotor speed of the servo motor is controlled by the input signal and can respond quickly. In the automatic control system, it is used as an actuator and has the characteristics of small electromechanical time constant and high linearity. It can convert the received electrical signal into angular displacement or angular velocity output on the motor shaft. The output shaft of the drive motor 20 is fixedly connected to a rotating disk 31, and the eccentric part of the rotating disk 31 is rotatably connected to a connecting rod 30 , a second piston cylinder 18 is fixedly connected to the upper end of the bottom plate 1, a second piston plate 29 which can slide up and down is arranged in the second piston cylinder 18, the other end of the connecting rod 30 is rotatably connected to the upper end of the second piston plate 29, the inner bottom space of the second piston cylinder 18 is connected with the inner bottom of the heating box 2 through the second one-way tube 22, the inner bottom space of the second piston cylinder 18 is connected with the first one-way tube 21, hollow plates 32 are installed on the inner walls of the left and right sides of the heating box 2, a plurality of holes are opened on the opposite sides of the two hollow plates 32, filters 28 are fixedly connected to the opposite sides of the two hollow plates 32, the other end of the rotary joint 26 on the left side is connected with the exhaust pipe 25, and the other end of the exhaust pipe 25 is connected with the inner bottom space of the heating box 2;

[0030] Among them, atomizing nozzles 6 are installed in multiple hole bodies located on the right side, and connecting pipes 11 are connected to the opposite sides of the two hollow plates 32. The other ends of the two connecting pipes 11 are installed with rotating joints 26. The rotating joint 26 located on the right side is connected to the other end of the first one-way tube 21. One-way valves are installed inside the first one-way tube 21 and the second one-way tube 22. The use of the one-way valve can ensure the one-way fluidity of the fluid. The one-way valve in the first one-way tube 21 flows in a one-way direction from the bottom space inside the second piston cylinder 18 to the connecting pipe 11 on the right side, and the one-way valve in the second one-way tube 22 flows in a one-way direction from the bottom space inside the heating box 2 to the bottom space inside the second piston cylinder 18;

[0031] The rotating mechanism is also included, and the rotating mechanism is used to drive the processing cylinder 3 to rotate. The rotating mechanism includes a gear ring 23 fixedly connected to the outside of the processing cylinder 3, and the output shaft of the driving motor 20 is fixedly connected to a gear 24, and the gear 24 is meshed with the gear ring 23. Three flip plates 27 are fixedly connected to the inner wall of the processing cylinder 3. By flipping the flip plate 27, the internal graphite negative electrode powder can be conveniently flipped.

[0032] Among them, an annular heating plate 9 is fixedly connected to the inner wall of the heating box 2, and the annular heating plate 9 adopts an electric heating plate. A feeding port 15 is opened on the inner top of the heating box 2, and a sealing plug 16 is installed on the feeding port 15. The inner top space of the heating box 2 is connected with the outside through a pressure relief pipe 17, and a pressure relief valve is installed in the pressure relief pipe 17. Furthermore, a filter box can be installed at the other end of the pressure relief pipe 17 here, which can filter the hot air discharged to the outside to avoid the pungent smell generated after the asphalt is heated from affecting the people around. A first piston cylinder 10 is fixedly connected to the left inner wall of the heating box 2, and the right side of the first piston cylinder 10 is connected to the inside of the heating box 2. A first piston plate 13 that can slide left and right is arranged in the first piston cylinder 10. The left side of the first piston plate 13 is elastically connected to the left inner wall of the first piston cylinder 10 through a spring 12, and a through opening 14 is opened on the left inner wall of the first piston cylinder 10.

[0033] In the present invention, when it is used, the sealing plug 16 can be opened, and then a proper amount of asphalt powder is added, and then the sealing plug 16 is closed, the sealing door 4 is opened, and then the graphite negative electrode material powder to be coated is added, and the sealing door 4 is closed, and the annular heating plate 9 is started for heating until the asphalt is completely melted, and then the driving motor 20 is started;

[0034] After the driving motor 20 is started, it drives the rotating disk 31 to rotate. The rotation of the rotating disk 31 causes the second piston plate 29 to reciprocate up and down through the connecting rod 30. By using the one-way valve inside the first one-way tube 21 and the second one-way tube 22, the asphalt liquid can be sucked in and then pressed out. The asphalt liquid after being pressed out will be discharged through the connecting tube 11 and sprayed out in an atomized state through the atomizing nozzle 6 in the hole body of the right hollow plate 32, and contact with the graphite negative electrode material powder for coating. After the coating is completed, the excess gas will be discharged from the left hollow plate 32 and enter the asphalt liquid. In this way, the residual atomized asphalt in the gas can be adsorbed by the asphalt liquid, avoiding the waste of asphalt and also avoiding the diffusion of asphalt into the surrounding environment.

[0035] It should be noted that after the driving motor 20 is started, it will also drive the gear 24 to rotate, and the rotation of the gear 24 will drive the gear ring 23 to rotate, and finally drive the processing tube 3 to rotate. After the processing tube 3 rotates, the internal flip plate 27 can be used to continuously flip the graphite negative electrode material powder inside, so that it can be more fully contacted with the atomized asphalt liquid, thereby effectively improving the comprehensiveness of the coating;

[0036] After the coating is completed, the driving motor 20 is started to rotate the processing cylinder 3 until the sealing door 4 faces downward. At this time, the sealing door 4 is opened to discharge the coated graphite negative electrode material powder.

[0037] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein, for example. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0038] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A graphite negative electrode material production asphalt coating modification device, characterized in that: include: A bottom plate (1), the upper end of the bottom plate (1) is fixedly connected to a heating box (2), the upper end of the bottom plate (1) is symmetrically fixedly connected to two support plates (5), the two support plates (5) are each provided with a circular opening (7), the inner sides of the two circular openings (7) are each provided with an annular slide rail (8), a processing cylinder (3) is commonly installed on the inner sides of the two annular slide rails (8), and a sealing door (4) is provided on the upper side of the processing cylinder (3); The atomizing mechanism comprises a mounting frame (19) whose high end is connected to the right side of the right supporting plate (5); a driving motor (20) is mounted on the mounting frame (19); an output shaft of the driving motor (20) is fixedly connected to a rotating disk (31); an eccentric portion of the rotating disk (31) is rotatably connected to a connecting rod (30); an upper end of the bottom plate (1) is fixedly connected to a second piston cylinder (18); a second piston plate (29) that can slide up and down is arranged in the second piston cylinder (18); the other end of the connecting rod (30) is rotatably connected to the upper end of the second piston plate (29); and the second piston The inner bottom space of the cylinder (18) is connected to the inner bottom of the heating box (2) through the second one-way tube (22); the inner bottom space of the second piston cylinder (18) is connected to the first one-way tube (21); hollow plates (32) are installed on the inner walls on both sides of the left and right sides of the heating box (2); a plurality of holes are opened on the opposite sides of the two hollow plates (32); the opposite sides of the two hollow plates (32) are connected to the connecting tube (11); the other ends of the two connecting tubes (11) are installed with a rotating joint (26); the rotating joint (26) located on the right side is connected to the other end of the first one-way tube (21); A rotating mechanism is used to drive the processing cylinder (3) to rotate.

2. The asphalt coating and modification device for producing graphite negative electrode materials according to claim 1, characterized in that: Filter screens (28) are fixedly connected to opposite sides of the two hollow plates (32), the other end of the rotary joint (26) on the left side is connected to an exhaust pipe (25), and the other end of the exhaust pipe (25) is connected to the inner bottom space of the heating box (2).

3. The asphalt coating and modification device for producing graphite negative electrode materials according to claim 1, characterized in that: Atomizing nozzles (6) are installed in the plurality of hole bodies located on the right side.

4. The asphalt coating and modification device for producing graphite negative electrode materials according to claim 1, characterized in that: The rotating mechanism comprises a gear ring (23) fixedly connected to the outside of the processing cylinder (3); the output shaft of the driving motor (20) is fixedly connected to a gear (24), and the gear (24) is meshed with the gear ring (23).

5. The asphalt coating and modification device for producing graphite negative electrode materials according to claim 1, characterized in that: Three flaps (27) are fixedly connected to the inner side wall of the processing cylinder (3).

6. The asphalt coating and modification device for producing graphite negative electrode materials according to claim 1, characterized in that: An annular heating plate (9) is fixedly connected to the inner wall of the heating box (2); a feeding port (15) is provided at the inner top of the heating box (2); a sealing plug (16) is installed on the feeding port (15); the inner top space of the heating box (2) is connected to the outside through a pressure relief pipe (17); a pressure relief valve is installed in the pressure relief pipe (17).

7. The asphalt coating and modification device for producing graphite negative electrode materials according to claim 1, characterized in that: A first piston cylinder (10) is fixedly connected to the left inner wall of the heating box (2); the right side of the first piston cylinder (10) is connected to the interior of the heating box (2); a first piston plate (13) that can slide left and right is arranged in the first piston cylinder (10); the left side of the first piston plate (13) is elastically connected to the left inner wall of the first piston cylinder (10) via a spring (12); and a through opening (14) is opened on the left inner wall of the first piston cylinder (10).

8. The asphalt coating and modification device for producing graphite negative electrode materials according to claim 1, characterized in that: One-way valves are installed inside the first one-way tube (21) and the second one-way tube (22). The one-way valve in the first one-way tube (21) flows in a one-way direction from the bottom space in the second piston cylinder (18) to the connecting tube (11) on the right side, while the one-way valve in the second one-way tube (22) flows in a one-way direction from the bottom space in the heating box (2) to the bottom space in the second piston cylinder (18).

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