A graphene coating device for sponge surface

Abstract

The present invention relates to the technical field of graphene materials, and in particular to a graphene coating device for a sponge surface. The technical solution includes: a chassis frame and a solution tank fixed by a support rod group, the upper side of the solution tank is rotatably connected to a tank cover by a hinge, and a placement mechanism for electrophoresis of the sponge is arranged on the inner side of the solution tank; the placement mechanism includes a short shaft running through both sides of the solution tank, and a motor whose output end is fixed to the short shaft on one side is fixed on the outer side of the solution tank, and a filter frame is fixed to the side where the two short shafts are close to each other through a U-shaped connector, and a limiting component for fixing the sponge is arranged on the inner side of the filter frame. The present invention realizes the electrophoresis and drying operations in the coating process through one device, which reduces the contact between the electroplating solution and the air and reduces the harm; and there is no need to transfer the sponge, so the operation is simpler, the drying speed is higher, the waste collection is more thorough, and the environmental protection is significantly improved.

Description

Technical Field

[0001] The invention relates to the technical field of graphene materials, and in particular to a device for applying graphene coating to the surface of a sponge. Background Art

[0002] Graphene has a unique two-dimensional crystal structure that determines its excellent electrical, mechanical and thermal properties. The main methods for preparing graphene sponge are: directly preparing graphene sponge, and preparing graphene sponge by secondary preparation of existing sponge; in the method of secondary preparation of graphene sponge, it includes preparing graphene oxide, then putting the sponge into a solution pool by stirring, and then reducing it by a reduction method, drying it to obtain graphene sponge, and realizing graphene coating on the sponge surface, which also includes operations such as preparing graphene sponge by electrophoresis.

[0003] In the method for preparing graphene sponge coating by electrophoresis, the sponge needs to be completely immersed in a container containing a solution, and then the prepared sponge is picked up for drainage and drying. The graphene dispersion used contains: hydrazine hydrate aqueous solution, sulfuric acid, hydrogen peroxide, etc., which are volatile. In the process of preparing the graphene sponge coating, the sponge after electrophoresis needs to be directly picked up and contacted with air, and volatile substances are emitted into the air, which is harmful to human health. Moreover, for the sponge with a large amount of solution, it is easy to cause waste of reagents after volatilization, and it cannot be reused, which is not conducive to energy saving and environmental protection. Summary of the invention

[0004] The purpose of the present invention is to address the problems existing in the background technology and to provide a sponge surface graphene coating device which prevents the solution from volatilizing in contact with air.

[0005] The technical solution of the present invention is: a device for coating the surface of a sponge with graphene, comprising a chassis frame and a solution tank fixed by a support rod group, the upper side of the solution tank is rotatably connected with a tank cover by a hinge, and the inner side of the solution tank is provided with a placement mechanism for electrophoresis of the sponge;

[0006] The placing mechanism includes a short shaft running through both sides of the solution bin, a motor whose output end is fixed to the short shaft on one side is fixed on the outside of the solution bin, a filter frame is fixed to the sides of the two short shafts close to each other through a U-shaped connecting piece, a limiting component for fixing the sponge is arranged on the inner side of the filter frame, a bottom sealing plate is fixed to the inner side of the bin cover, an electrode assembly in contact with both ends of the sponge is arranged on the lower side of the bottom sealing plate, the electrode assembly includes two lower extension plates fixed to the lower side of the bottom sealing plate, a rotating shaft is rotatably connected to the lower extension plate, a power-connecting electrode in contact with both ends of the sponge is fixed on the rotating shaft, a winding wheel is fixed to one end of the rotating shaft, a pull rope is wound and fixed on the winding wheel, a counterweight block for maintaining stable contact between the winding wheel and the sponge is fixed on the winding wheel, and a driving component for pulling the pull rope as the air pressure inside the bin cover changes is fixed on the inner top of the bin cover;

[0007] The lower side of the solution tank is fixedly connected to a closed box via a lower discharge pipe, a control valve is provided on the lower discharge pipe, a storage box is slidably provided inside the closed box, an outer piston member is fixedly sleeved on the storage box and is tightly attached to the inner wall of the closed box, a bearing member is fixed to the lower side of the storage box, the bearing member and the closed box are clamped together by a fastening member, and an auxiliary component for assisting the rotation of the driving placement mechanism is fixed to the upper side of the bearing member.

[0008] Preferably, the limiting component includes a filter cover arranged on the inner side of the filter frame, two rectangular plates are fixed on the upper side of the filter cover, and plug plates are penetrated by one side of the two rectangular plates close to each other, square plates are fixed on the two plug plates, and a latch spring is fixed between the square plates and the plug plates.

[0009] Preferably, the driving assembly includes a hollow column fixed in the compartment cover, two pistons are slidably arranged inside the hollow column, a cavity is formed between the two pistons, and an L-shaped movable part penetrating the inner wall of the hollow column and fixed to the pull rope is fixed on the side of the two pistons away from each other.

[0010] Preferably, two through holes for passing the draw rope are provided on the upper side of the bottom sealing plate, and the draw rope is located in the through holes.

[0011] Preferably, a condenser connected to an external cooling water pipe is provided at the inner bottom of the solution tank, a heating tube for heating is fixed to the lower side of the bottom sealing plate, and both ends of the heating tube are connected to power connection parts that can cooperate with two power electrodes.

[0012] Preferably, the fastening member comprises a positioning plate movably sleeved on the bearing member, the positioning plate is provided with a docking port, and an outer protrusion plugged into the docking port is fixed to one side of the closed box.

[0013] Preferably, the auxiliary component includes a square column fixed on the supporting member, a top plate fixed on the top of the square column, a sliding plate movably sleeved on the square column, a buffer spring sleeved on the square column is arranged between the sliding plate and the top plate, a rack rod is fixed on the sliding plate, and a gear meshing with the rack rod is fixed at one end of the short shaft on the other side.

[0014] Preferably, the left side and the right side of the closed box are provided with openings for the movement of the carrier, and the lower side of the storage box is connected to a drain pipe, and a valve is provided on the drain pipe.

[0015] Preferably, the power electrode comprises a straight rod portion whose upper half is a straight rod, and the lower half of the power electrode is a J-shaped portion fixed to the lower end of the straight rod portion and arranged transversely.

[0016] Compared with the prior art, the present invention has the following beneficial technical effects:

[0017] Through the cooperation of the filter frame and the filter cover in the placement mechanism, and through the limited plugging of the rectangular plate and the filter frame, the sponge placed between the filter frame and the filter cover can be restricted, which is convenient for stable contact with the power-connected electrode. Through the cooperation of the set electrode assembly and the driving assembly, after the chamber cover and the solution chamber are closed and sealed, the two ends of the power-connected electrode are in contact with the sponge, and electrophoresis can be automatically performed after power is turned on.

[0018] Through the cooperation of the closed box, the storage box and the outer piston, after the electrophoresis is completed, the solution in the solution bin is discharged into the storage box through the lower discharge pipe. Due to the self-gravity of the solution, the storage box is moved downward, and then the sealed environment formed by the solution bin and the bin cover, as well as the closed box and the storage box are in a negative pressure condition, and the negative pressure is different with the change of the weight of the solution. Under the negative pressure condition, the boiling point and other characteristics of the solution itself will be reduced, which is conducive to the drying operation. Under the negative pressure condition, the heating tube will be automatically started, and the electric heating effect of the heating tube and the condensation effect of the condenser tube will condense the vaporized solution and flow it into the storage box, which can accelerate the drying of the sponge placed in the filter frame;

[0019] Through the placement mechanism and drying effect, in the operation process of preparing the graphene sponge coating, the contact between the solution and the air is reduced as much as possible, the volatilization of volatile substances in the solution is reduced, the pollution to the environment and the damage to the human body are reduced, and the loss and waste of the solution are reduced;

[0020] Through the drive of the motor, and the arrangement of the filter frame, filter cover and other components, when the heating tube starts to work, the filter frame and filter cover can be used to disturb the air in the solution tank, accelerate the air flow, ensure that the internal air is more uniform, and also promote the contact between the condenser and the air, which can accelerate the drying effect;

[0021] The auxiliary mechanism set up can achieve a buffering effect through the elastic action of the buffer spring after the storage box moves down, and can slowly move down through the rack rod, and the rack rod and the gear are engaged with each other to rotate the short shaft fixed with the gear, thereby promoting an auxiliary driving effect before the motor starts, reducing the high-load movement when the motor starts, and reducing the high power demand on the motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A structural schematic diagram of an embodiment of the present invention is provided;

[0023] Figure 2 for Figure 1 A front cross-sectional view of

[0024] Figure 3 for Figure 1 A schematic diagram of the enlarged structure at point A;

[0025] Figure 4 for Figure 1 Right view of;

[0026] Figure 5 for Figure 4 A sectional stereogram in the middle BB direction;

[0027] Figure 6 for Figure 5 A schematic diagram of the enlarged structure at C;

[0028] Figure 7 for Figure 1 A schematic diagram of the structure of the placement mechanism;

[0029] Figure 8 for Figure 7 A partial structural cross-sectional view;

[0030] Fig. 9 for Figure 1 A schematic diagram of the structure at D of FIG.

[0031] Fig.10 for Figure 1 Enlarged structural diagram at E.

[0032] Reference numerals:

[0033] 1. Chassis frame; 11. Support rod group;

[0034] 2. Solution tank; 21. Tank cover;

[0035] 22, short shaft; 221, U-shaped connecting piece; 222, filter frame;

[0036] 23. Filter cover;

[0037] 24, rectangular plate; 241, plug plate; 242, square plate; 243, latch spring;

[0038] 25. Bottom sealing plate;

[0039] 26. Hollow column; 261. Piston; 262. L-shaped movable part;

[0040] 27, lower extension plate; 271, rotating shaft; 272, power electrode; 273, reel; 274, pull rope; 275, counterweight;

[0041] 28. Motor;

[0042] 3. Downstream pipe; 31. Control valve;

[0043] 4. Closed box; 41. Storage box; 411. External piston member; 42. Carrying member;

[0044] 5. Square column; 51. Sliding plate; 52. Top plate; 53. Buffer spring; 54. Rack rod; 55. Gear;

[0045] 6. Heating tube; 61. Electrical connection;

[0046] 7. Condenser. DETAILED DESCRIPTION

[0047] The technical solution of the present invention is further described below in conjunction with the accompanying drawings and specific embodiments.

[0048] Embodiment 1

[0049] The present invention proposes a device for coating sponge surface with graphene, referring to Figure 1-3 As shown, it includes a chassis frame 1 and a solution tank 2 fixed by a support rod group 11. The inner bottom of the solution tank 2 is processed into a funnel shape inclined toward the center, so that all the liquid inside can be gathered and flowed out. The upper side of the solution tank 2 is rotatably connected to a tank cover 21 through a hinge. A lock is provided between the side of the tank cover 21 away from the hinge and the solution tank 2. The lower side of the tank cover 21 and the top of the solution tank 2 are both provided with sealing frames for enhancing the sealing performance; the front side of the tank cover 21 is provided with a handle for easy opening. The inner side of the solution tank 2 is provided with a placement mechanism for placing the sponge for electrophoresis;

[0050] refer to Figure 5-10As shown, the placement mechanism includes a short shaft 22 that passes through both sides of the solution tank 2, and a motor 28 whose output end is fixed to the short shaft 22 on one side is fixed on the outside of the solution tank 2, and the motor 28 is fixed by a mounting frame fixed on the solution tank 2. The two short shafts 22 are both fixed with a filter frame 222 on one side close to each other through a U-shaped connector 221, and the U-shaped connector 221 is rotatably connected to the solution tank 2, and a limiting component for fixing the sponge is arranged on the inner side of the filter frame 222; the limiting component includes a filter cover 23 arranged on the inner side of the filter frame 222, and two rectangular plates 24 are fixed on the upper side of the filter cover 23, and a plug plate 241 is arranged on the side close to the two rectangular plates 24, and a square plate 242 is fixed on the two plug plates 241, and a latch spring 243 is fixed between the square plate 242 and the plug plate 241, and a limiting hole for the two plug plates 241 to pass through is opened on the filter frame 222, and the plug plate 241 is plugged into the limiting hole. By cooperating the plug plate 241 in the limiting assembly with the limiting hole, it is convenient to limit the position between the filter cover 23 and the filter frame 222, thereby ensuring that the sponge is in a normal state and will not be compressed.

[0051] refer to Figure 6-8 As shown, a bottom sealing plate 25 is fixed on the inner side of the bin cover 21, and an electrode assembly in contact with both ends of the sponge is arranged on the lower side of the bottom sealing plate 25. The electrode assembly includes two lower extension plates 27 fixed on the lower side of the bottom sealing plate 25, and a rotating shaft 271 is rotatably connected to the lower extension plate 27. A power-connecting electrode 272 in contact with both ends of the sponge is fixed on the rotating shaft 271. The power-connecting electrode 272 includes a straight rod portion whose upper half is a straight rod, and the lower half of the power-connecting electrode 272 is a J-shaped portion fixed to the lower end of the straight rod portion and arranged horizontally; the upper end of the power-connecting electrode 272 is connected to the positive and negative electrodes of the power-connecting port fixed on the bin cover 21 through a wire, so as to facilitate connection with an external power source. When the power-connecting electrode 272 is in contact with the side of the power-connecting electrode 272 through the J-shaped portion of the power-connecting electrode 272, the bending design of the J-shaped portion can facilitate the fit with the sponge. A reel 273 is fixed at one end of the rotating shaft 271, and a pull rope 274 is reeled and fixed on the reel 273. Two through holes for passing the pull rope 274 are provided on the upper side of the bottom sealing plate 25, and the pull rope 274 is located in the through holes. In this embodiment, the pull rope 274 is made of a composite material such as carbon fiber, and has the characteristics of good fatigue resistance, small thermal expansion coefficient, good corrosion resistance, etc. A counterweight block 275 is fixed on the reel 273 for maintaining stable contact between the reel 273 and the sponge. The counterweight block 275 can achieve a counterweight effect to ensure that the power-connected electrode 272 can stably contact the side of the sponge. A driving component that pulls the pull rope 274 as the air pressure inside the reel 21 changes is fixed to the inner top of the bin cover 21.

[0052] refer to Figure 8As shown, the drive assembly includes a hollow column 26 fixed in the compartment cover 21, and two pistons 261 are slidably arranged inside the hollow column 26, and a cavity is formed between the two pistons 261. The two pistons 261 are fixed with an L-shaped movable part 262 which passes through the inner wall of the hollow column 26 and is fixed to the pull rope 274 on the side away from each other, and sliding holes for the sliding of the L-shaped movable part 262 are opened on both sides of the hollow column 26, and the L-shaped movable part 262 is located in the sliding hole.

[0053] refer to Figure 1 , 5 and Figure 6 As shown, the lower side of the solution tank 2 is fixedly connected to the closed box 4 through the lower discharge pipe 3, and the lower discharge pipe 3 is provided with a control valve 31, and the isolation between the solution tank 2 and the closed box 4 can be achieved through the control of the valve. A storage box 41 is slidably provided inside the closed box 4, and an outer piston member 411 is fixedly sleeved on the storage box 41 and is closely attached to the inner wall of the closed box 4. A bearing member 42 is fixed on the lower side of the storage box 41, and the bearing member 42 and the closed box 4 are clamped by a fastening member. The fastening member includes a positioning plate 422 movably sleeved on the bearing member 42, and a docking port is provided on the positioning plate 422. An outer protrusion 421 plugged into the docking port is fixed on one side of the closed box 4; a docking opening for the movement of the bearing member 42 is opened on the left and right sides of the closed box 4, and a limiting block is fixed on the upper side of the opening to limit the outer piston member 411 from sliding to the docking opening, thereby ensuring the sealing of the closed box 4, the storage box 41, and the outer piston member 411. The lower side of the storage box 41 is connected to a drain pipe, on which a valve is provided; the remaining solution is conveniently collected through the drain pipe, and flows into the storage box 41 through the lower drain pipe 3, which can also have a mixing effect on the solution. An auxiliary component that assists in driving the placement mechanism to rotate is fixed on the upper side of the carrier 42.

[0054] refer to Figure 2-3 As shown, the inner bottom of the solution tank 2 is provided with a condenser 7 connected to an external cooling water pipe. After the two ends of the condenser 7 are respectively connected to the external cooling water pipe, the flow of cooling water keeps the condenser 7 relatively stable, and through the heat conduction of the condenser 7, it can ensure that the outside of the condenser 7 reaches a suitable temperature. A heating tube 6 for heating is fixed to the lower side of the bottom sealing plate 25, and both ends of the heating tube 6 are connected to a power connection 61 that can cooperate with two power connection electrodes 272.

[0055] In this embodiment, before performing the electroplating operation, it is necessary to prepare enough solution in advance; then the bin cover 21 is opened, the pre-prepared sponge is taken out, and then the plug plate 241 is pulled to disengage the plug plate 241 from the plug-in connection with the filter frame 222, so that the filter cover 23 is disengaged from the filter frame 222, and then the sponge is placed in the filter frame 222, and then the filter cover 23 is covered, and then the plug plate 241 is pulled to complete the plug-in connection between the plug plate 241 and the filter frame 222; the solution is added to the solution bin 2 until the added sponge is completely submerged, and then the bin cover 21 is closed, and then the bin cover 21 and the solution bin 2 are sealed.

[0056] After the preliminary preparation work is completed, the power-connecting electrode 272 is connected to the external power supply through the power port, and then the power-connecting electrode 272 is energized. Under the action of electrophoresis, the surface of the sponge placed in the solution in the solution tank 2 is attached with a graphene coating. After the power is turned on for a certain period of time, the positioning plate 422 is separated from the docking with the external protrusion 421, and then the control valve 31 on the lower discharge pipe 3 is opened to discharge the solution in the solution tank 2 into the storage box 41. The storage box 41 receives the solution in the solution tank 2, and then under the gravity of the solution in the solution tank 2, the outer piston 411 on the storage box 41 slides downward with the closed box 4, and then the cavity connected with the closed box 4 and the solution tank 2 through the lower discharge pipe 3 is in a negative pressure state, and the perforation on the bottom sealing plate 25 can make the space between the tank cover 21 and the bottom sealing plate 25 negative. The formed cavity is also in a negative pressure state, and the air pressure of the cavity formed between the piston 261 is greater than the internal cavity of the bin cover 21 and the bottom sealing plate 25, so that the piston 261 and the hollow column 26 slide away from each other, and the L-shaped movable part 262 pulls the pull rope 274, and in the through hole on the bottom sealing plate 25, the winding wheel 273 of the winding pull rope 274 rotates, and the rotating shaft 271 fixed to the winding wheel 273 drives the power-connected electrode 272 to rotate, and the power-connected electrode 272 will contact the power-connected part 61, so that the heating tube 6 is heated after being energized, and the air inside the solution bin 2 is heated. Since the internal air pressure of the solution bin 2 becomes smaller, the dew point temperature of the water vapor in the solution bin 2 decreases with the pressure reduction, thereby promoting the internal solution gas to be condensed by the condenser 7, thereby promoting the drying effect.

[0057] When the power electrode 272 rotates, the power electrode 272 will not hinder the rotation of the U-shaped connector 221; when the motor 28 is powered on, the motor 28 drives the short shaft 22 to rotate, and then the short shaft 22 drives the U-shaped connector 221 and the filter frame 222 to rotate, and the sponge placed in the filter frame 222 has a reduced water content after a period of drainage. After the motor 28 drives the filter frame 222 to rotate, the water in the sponge will be separated due to the centrifugal effect, and the filter frame 222 can also drive the air flow inside the solution tank 2, thereby accelerating The contact amount between the water vapor in the solution tank 2 and the condenser 7 becomes larger, thereby accelerating the reduction of humidity in the solution tank 2, which is beneficial to accelerate the drying of the sponge in the filter frame 222, and does not need to contact with the air during the drying process, thereby avoiding air pollution; the condenser 7 condenses the water vapor inside the solution tank 2 and accumulates it, and then after the control valve 31 on the lower discharge pipe 3 is opened, the condensed solution flows into the storage box 41, and after a certain period of time and the multiple condensed solutions are discharged into the storage box 41, the sponge in the filter frame 222 is dried.

[0058] Embodiment 2

[0059] like Figure 1-6 As shown, a graphene coating device for sponge surface proposed by the present invention is based on the first or second embodiment, and this embodiment also includes: the auxiliary component includes a square column 5 fixed on the bearing member 42, a top plate 52 is fixed on the top of the square column 5, a sliding plate 51 is movably sleeved on the square column 5, a buffer spring 53 sleeved on the square column 5 is arranged between the sliding plate 51 and the top plate 52, a rack rod 54 is fixed on the sliding plate 51, and a matching piece for limiting the stable movement of the rack rod 54 is fixed on one side of the solution tank 2. A gear 55 meshing with the rack rod 54 is fixed at one end of the short shaft 22 on the other side.

[0060] In this embodiment, the storage box 41 falls, and then the supporting member 42 on the lower side of the storage box 41 pulls the square column 5 downward. Since the solution in the solution tank 2 flows rapidly into the storage box 41 during the descent, the storage box 41 is impacted and falls. Then, the elastic action of the buffer spring 53 can ensure that there is a certain buffering effect between the rack rod 54 and the gear 55 to avoid damage to the rack rod 54 or the gear 55. After the solution flows through the storage box 41 for a period of time, the buffer spring 53 has the elastic force to push the sliding plate 51, and then the rack rod 54 moves downward, and the rack rod 54 and the gear 55 are meshed for transmission, and then the gear 55 can rotate, thereby driving the placement mechanism in the solution tank 2 to rotate, which is beneficial for the motor 28 to provide huge torque at startup and facilitate the motor 28 to work.

[0061] The above-mentioned specific embodiments are only several preferred embodiments of the present invention. Based on the technical solutions of the present invention and the relevant inspirations of the above-mentioned embodiments, those skilled in the art can make various alternative improvements and combinations to the above-mentioned specific embodiments.

Claims

1. A graphene coating device for a sponge surface, characterized in that: It comprises a chassis frame (1) and a solution tank (2) fixed by a support rod group (11); the upper side of the solution tank (2) is rotatably connected to a tank cover (21) by a hinge; and the inner side of the solution tank (2) is provided with a placement mechanism for placing a sponge for electrophoresis; The placement mechanism comprises short shafts (22) passing through both sides of the solution bin (2); a motor (28) whose output end is fixed to the short shaft (22) on one side is fixed on the outside of the solution bin (2); a filter frame (222) is fixed to the two sides of the two short shafts (22) close to each other via a U-shaped connecting piece (221); a limiting component for fixing the sponge is arranged on the inner side of the filter frame (222); a bottom sealing plate (25) is fixed on the inner side of the bin cover (21); two through holes are provided on the upper side of the bottom sealing plate (25) for passing through a pull rope (274); the pull rope (274) is located in the through holes; and a connection member (274) for connecting with both ends of the sponge is arranged on the lower side of the bottom sealing plate (25). The electrode assembly comprises two lower extension plates (27) fixed to the lower side of the bottom sealing plate (25); a rotating shaft (271) is rotatably connected to the lower extension plate (27); a power connection electrode (272) in contact with two ends of the sponge is fixed to the rotating shaft (271); a winding wheel (273) is fixed to one end of the rotating shaft (271); a pull rope (274) is wound and fixed to the winding wheel (273); a counterweight (275) is fixed to the winding wheel (273) for maintaining stable contact between the winding wheel (273) and the sponge; and a driving assembly for pulling the pull rope (274) as the air pressure inside the warehouse cover (21) changes is fixed to the inner top of the warehouse cover (21); The driving assembly comprises a hollow column (26) fixed in the compartment cover (21), two pistons (261) are slidably arranged inside the hollow column (26), a cavity is formed between the two pistons (261), and an L-shaped movable part (262) penetrating the inner wall of the hollow column (26) and fixed to the pull rope (274) is fixed on the side of the two pistons (261) away from each other; The lower side of the solution tank (2) is fixedly connected to a closed box (4) via a lower discharge pipe (3); a storage box (41) is slidably arranged inside the closed box (4); an outer piston member (411) is fixedly sleeved on the storage box (41) and is in close contact with the inner wall of the closed box (4); a bearing member (42) is fixedly arranged on the lower side of the storage box (41); the bearing member (42) is clamped with the closed box (4) via a fastening member; an auxiliary component for assisting the rotation of the placement mechanism is fixedly arranged on the upper side of the bearing member (42).

2. The device for applying graphene coating to the surface of a sponge according to claim 1, characterized in that: The limiting component comprises a filter cover (23) arranged on the inner side of the filter frame (222), two rectangular plates (24) are fixed on the upper side of the filter cover (23), a plug plate (241) is penetrated through the adjacent sides of the two rectangular plates (24), a square plate (242) is fixed on the two plug plates (241), and a latch spring (243) is fixed between the square plate (242) and the plug plate (241).

3. The device for applying graphene coating to the surface of a sponge according to claim 1, characterized in that: The inner bottom of the solution tank (2) is provided with a condenser tube (7) connected to an external cooling water pipe, a heating tube (6) for heating is fixed on the lower side of the bottom sealing plate (25), and both ends of the heating tube (6) are connected to power connection parts (61) that can cooperate with two power connection electrodes (272).

4. The device for coating a sponge surface with graphene according to claim 1, characterized in that: The fastening member comprises a positioning plate (422) movably sleeved on the bearing member (42), a docking port being provided on the positioning plate (422), and an outer protrusion (421) plugged into the docking port being fixed on one side of the closed box (4).

5. The device for coating a sponge surface with graphene according to claim 1, characterized in that: The auxiliary component comprises a square column (5) fixed on a bearing member (42), a top plate (52) fixed on the top of the square column (5), a sliding plate (51) movably sleeved on the square column (5), a buffer spring (53) sleeved on the square column (5) is arranged between the sliding plate (51) and the top plate (52), a rack rod (54) is fixed on the sliding plate (51), and a gear (55) meshing with the rack rod (54) is fixed on one end of the short shaft (22) on the other side.

6. The device for applying graphene coating to the surface of a sponge according to claim 1, characterized in that: The left and right sides of the closed box (4) are both provided with openings for the movement of the carrier (42), and the lower side of the storage box (41) is connected to a drain pipe, on which a valve is provided.

7. The device for applying graphene coating to the surface of a sponge according to claim 1, characterized in that: The power receiving electrode (272) comprises a straight rod portion whose upper half is a straight rod, and the lower half of the power receiving electrode (272) is a J-shaped portion fixed at the lower end of the straight rod portion and arranged transversely.

Images