A kind of graphene film preparation device and method

Abstract

The present invention discloses a graphene film preparation device and method, which relates to the technical field of graphene film preparation, including a preparation box, a conveying roller group, and a film body, wherein a driving motor is fixedly installed on the top of the preparation box, and an output shaft at one end of the driving motor is fixedly connected to a driving gear. This graphene film preparation device and method, when conveying and preparing the film body, can use multiple flushing nozzles to flush the upper and lower surfaces of the film body from multiple angles, thereby ensuring the comprehensive flushing of the film body, and at the same time, can use the cooperation of the trigger block and the pressure cover to intermittently partially block the boost hole, so that the flushing pressure of the flushing nozzle can be intermittently increased or decreased, which can not only use short-term high pressure to flush out stubborn impurities, but also avoid long-term high-pressure flushing to cause damage to the surface of the film body, thereby ensuring the quality of the graphene film product prepared subsequently.

Description

Technical Field

[0001] The present invention relates to the technical field of graphene film preparation, and in particular to a graphene film preparation device and method. Background Art

[0002] Graphene film is a thin film material composed of single or multi-layer graphene. It is an allotrope of carbon, in which carbon atoms are bonded by sp2 hybridization to form a single-layer hexagonal honeycomb lattice. This thin film material is prepared by epitaxial growth and chemical vapor deposition (CVD) and has high conductivity, high light transmittance, high flexibility, high barrier properties, high mechanical strength, high chemical stability and ultra-thin properties. The excellent properties of graphene film make it have broad development prospects in many fields, including but not limited to new generation flexible electronic devices, aerospace, smart phones, tablet computers, laptops and other consumer electronics applications.

[0003] For example, Chinese patent CN110371962B discloses a graphene film preparation device. It can be seen that this patented technology can use a water pump to pump water in a water tank into a water pipe during the transportation process, and then spray it out through a nozzle through a water inlet pipe and a connecting pipe. The upper and lower surfaces of the graphene film can be cleaned to maintain the cleanliness of the finished graphene film.

[0004] Based on the search of prior art, it can be known that during the preparation process of graphene film, foreign matter, dust and other impurities are easily adhered, which affects the quality of the finished graphene film. However, when rinsing with clean water, only dust impurities with weak adsorption strength can be removed, while stubborn impurities are difficult to rinse away, resulting in difficulty in ensuring the quality of the subsequently prepared graphene film products. Summary of the invention

[0005] The object of the present invention is to provide a device and method for preparing a graphene film to solve the problems raised in the above background technology.

[0006] To achieve the above object, the present invention provides a method for preparing a graphene film, comprising the following steps:

[0007] Transport and flushing: Use two sets of symmetrically installed conveying rollers to transport the main body of the film, and then use a water pump to send water into the water storage tray, so that the water in the water storage tray enters the connecting pipe through the booster hole and is sprayed out through the flushing nozzle. Through the setting of multiple flushing nozzles, the upper and lower surfaces of the main body of the film can be fully flushed;

[0008] Intermittent pressurization: The driven motor drives the driven gear disc to rotate, so that the trigger block moves in a circle, so that the inclined surface can be used to squeeze the gland, so that the gland drives the booster rod to partially block the booster hole of the connecting pipe, so that the water flow rate is increased, which can not only use short-term high pressure to flush out stubborn impurities, but also avoid long-term high-pressure flushing that may cause damage to the main surface of the membrane;

[0009] Repeated brushing: When the driven gear disc rotates repeatedly, the elasticity of the tension spring can be used to drive the brushes symmetrically installed up and down to perform reciprocating brushing. By utilizing the cooperation of the front and rear sets of brushes, it is possible to use the front brush block to pre-brush the surface of the film body to remove impurities that are easy to remove on the surface and loosen stubborn impurities, and the rear brush block can be used to further brush away impurities that may remain after flushing.

[0010] The present invention also provides a graphene film preparation device as follows, comprising a preparation box, a conveying roller group, and a film body, wherein a driving motor is fixedly installed on the top of the preparation box, and an output shaft at one end of the driving motor is fixedly connected to a driving gear, and a through hole is opened through the top of the preparation box corresponding to the driving gear;

[0011] The inner wall of the preparation box is provided with a pressurized flushing mechanism, so that when the film body is being transported and prepared, the upper and lower surfaces of the film body can be flushed from multiple angles and the flushing pressure can be increased intermittently;

[0012] The inner wall of the preparation box is symmetrically provided with a reciprocating brushing mechanism with the pressurized flushing mechanism as the midline, so that during the flushing process of the film body, the surface of the film body can be brushed in advance and any remaining impurities can be brushed away.

[0013] Preferably, the pressurized flushing mechanism includes a water storage pan, and the outer wall of the water storage pan is symmetrically and equidistantly fixedly connected with a support plate, one end of the support plate is fixed to the inner wall of the preparation box, the interior of the water storage pan is equidistantly fixedly connected with connecting pipes, six connecting pipes are fixedly connected with flushing nozzles at one end facing the center of the water storage pan, and the outer wall of the connecting pipe is penetrated by a pressurized hole, and the connecting pipe is connected to the interior of the water storage pan through the pressurized hole.

[0014] Preferably, the bottom side of the driving gear is meshed with a driven gear disk through the inner wall of the through hole, and the inner wall of the driven gear disk is fixedly connected with trigger blocks at equal distances, and one side wall of the six trigger blocks facing the center of the driven gear disk is inclined, and the inner wall of the connecting tube is slidably connected with a boost rod, and one end of the six boost rods away from the center of the driven gear disk is fixedly connected with a pressure cover, and the outer shape of the pressure cover is semicircular.

[0015] Preferably, one end face of the six pressure covers facing the center of the driven gear disk is fixedly connected with a spring, and the other end of the spring is fixedly connected to the outer wall of the water storage disk. The pressure covers and the connecting tube form a telescopic structure, and the end face of the pressure covers away from the center of the circle slides in contact with the inner wall of the driven gear disk.

[0016] Preferably, a slide plate is symmetrically and equidistantly fixedly connected to the inner wall of the driven gear plate, an annular groove is formed on the outer wall of the water storage plate corresponding to the slide plate, and the outer wall of the other end of the slide plate slides in contact with the inner wall of the annular groove.

[0017] Preferably, the reciprocating brushing mechanism includes a fixed plate, and the two side walls of the fixed plate are fixed to the inner wall of the preparation box, a limiting groove is provided through the top of the fixed plate, and the inner wall of the limiting groove is slidably connected with a connecting rod, the top of the connecting rod is fixedly connected with a hook ring, and the inner wall of the hook ring is movably connected with a tension spring, the other end of the tension spring is movably connected with another hook ring, and the outer wall of the other hook ring is fixedly connected to the inner wall of the driven gear disk.

[0018] Preferably, a brush block is fixedly connected to the bottom of the connecting rod, and a brush is fixedly installed on the bottom of the brush block, connecting blocks are fixedly connected to the two side walls of the connecting rod, and the bottom of the connecting block slides in fit with the top of the fixed plate, and the top of the brush block slides in fit with the bottom of the fixed plate.

[0019] Preferably, a water pump is fixedly installed on one side outer wall of the preparation box, and the delivery end of the water pump is fixedly connected to a delivery pipe, a diversion pipe is symmetrically fixedly connected to the outer wall of the delivery pipe, and the other end of the diversion pipe passes through the interior of the support plate and is fixedly connected to the two end surfaces of the water storage tray, and the interior of the diversion pipe is connected to the interior of the water storage tray.

[0020] Preferably, a guide inclined groove is provided on the bottom inner wall of the preparation box, and a water leakage hole is provided through the bottom inner wall of the preparation box, a collecting water trough is fixedly installed corresponding to the bottom of the preparation box, a suction pipe is fixedly connected to one side wall of the collecting water trough, and the other end of the suction pipe is fixed to the input end of the water pump.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] 1. When the film body is being transported and prepared, the upper and lower surfaces of the film body can be flushed from multiple angles through multiple flushing nozzles, thereby ensuring the comprehensive flushing of the film body. At the same time, the trigger block and the pressure cover can be used to intermittently partially block the boost hole, so that the flushing pressure of the flushing nozzle can be increased or decreased intermittently, which can not only use short-term high pressure to flush away stubborn impurities, but also avoid long-term high-pressure flushing that causes damage to the surface of the film body, thereby ensuring the quality of the graphene film product prepared subsequently.

[0023] 2. When the film body is being transported and prepared, the brush blocks symmetrically arranged front and back can be driven by repeated rotation of the driven gear disc to brush the upper and lower surfaces of the film body. The front brush block can be used to brush the surface of the film body in advance to remove impurities that are easy to remove on the surface and loosen stubborn impurities for subsequent flushing. The rear brush block can also be used to further brush away impurities that may remain after flushing, thereby further ensuring the quality of the finished graphene film prepared by the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is a preparation flow chart of the present invention;

[0025] Figure 2 It is a schematic diagram of the overall structure of the present invention;

[0026] Figure 3 It is a schematic side view of the overall structure of the present invention;

[0027] Figure 4 It is a schematic diagram of the structure inside the preparation box of the present invention;

[0028] Figure 5 It is a structural schematic diagram of the first part of the pressurized flushing mechanism of the present invention;

[0029] Figure 6 It is a structural schematic diagram of the second part of the pressurized flushing mechanism of the present invention;

[0030] Figure 7 It is a structural schematic diagram of the reciprocating brushing mechanism of the present invention.

[0031] In the figure: 1. preparation box; 2. conveying roller group; 3. film body; 4. driving motor; 5. driving gear; 8. through hole; 9. water pump; 10. conveying pipe; 11. diverter pipe; 12. guide chute; 13. collecting water tank; 14. suction pipe; 6. pressurized flushing mechanism; 601. water storage tray; 602. support plate; 603. connecting pipe; 604. flushing nozzle; 605. pressurized hole; 606. driven gear plate; 607. trigger block; 608. pressurized rod; 609. gland; 610. spring; 611. slide plate; 612. ring groove; 7. reciprocating brushing mechanism; 701. fixing plate; 702. limit groove; 703. connecting rod; 704. hook ring; 705. tension spring; 706. brush block; 707. brush; 708. connecting block. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] For example, see Figure 1-7 The present invention provides a graphene film preparation device and method, comprising a preparation box 1, a conveying roller group 2, and a film body 3. A driving motor 4 is fixedly installed on the top of the preparation box 1, and an output shaft at one end of the driving motor 4 is fixedly connected to a driving gear 5. A through hole 8 is opened through the top of the preparation box 1 corresponding to the driving gear 5;

[0034] The inner wall of the preparation box 1 is provided with a pressurized flushing mechanism 6, so that when the film body 3 is being transported and prepared, the upper and lower surfaces of the film body 3 can be flushed from multiple angles and the flushing pressure can be increased intermittently;

[0035] Further, the pressurized flushing mechanism 6 includes a water storage pan 601, and the outer wall of the water storage pan 601 is symmetrically and fixedly connected with a support plate 602, one end of the support plate 602 is fixed to the inner wall of the preparation box 1, and the inside of the water storage pan 601 is equidistantly and fixedly connected with connecting pipes 603, and one end of the six connecting pipes 603 facing the center of the water storage pan 601 is fixedly connected with a flushing nozzle 604, and the outer wall of the connecting pipe 603 is penetrated with a pressurized hole 605, and the connecting pipe 603 is connected to the inside of the water storage pan 601 through the pressurized hole 605;

[0036] More specifically, in this embodiment, firstly, during the preparation process, two groups of symmetrically installed conveying roller groups 2 are used to convey the film body 3. Then, during the conveying process, a water pump 9 is fixedly installed on one side outer wall of the preparation box 1, and a conveying pipe 10 is fixedly connected to the conveying end of the water pump 9, and a shunt pipe 11 is symmetrically fixedly connected to the outer wall of the conveying pipe 10, while the other end of the shunt pipe 11 passes through the interior of the support plate 602 and is fixedly connected to the two end surfaces of the water storage tray 601, and the interior of the shunt pipe 11 is connected to the interior of the water storage tray 601, so that water can be conveyed into the water storage tray 601 through the water pump 9;

[0037] Then, the connection pipes 603 are fixedly connected to the inside of the water storage tray 601 at equal distances, and the six connection pipes 603 are fixedly connected to the end portions facing the center of the water storage tray 601 with the flushing nozzles 604, and the outer walls of the connection pipes 603 are penetrated with pressurizing holes 605, and the connection pipes 603 are connected to the inside of the water storage tray 601 through the pressurizing holes 605, so that during the transportation process, the water in the water storage tray 601 can enter the connection pipes 603 through the pressurizing holes 605 and be sprayed out through the flushing nozzles 604, and the upper and lower surfaces of the film body 3 can be fully flushed by setting a plurality of flushing nozzles 604;

[0038] Then, during the flushing process, the output shaft at one end of the driving motor 4 is fixedly connected to the driving gear 5, and the bottom side of the driving gear 5 passes through the inner wall of the through hole 8 to mesh with the driven toothed disc 606, and the inner wall of the driven toothed disc 606 is symmetrically and fixedly connected with the slide plate 611 at an equal distance. At the same time, the outer wall of the water storage tray 601 is provided with an annular groove 612 corresponding to the slide plate 611, and the outer wall of the other end of the slide plate 611 fits and slides with the inner wall of the annular groove 612, so that the driven toothed disc 606 can be supported by the cooperation of the slide plate 611 and the annular groove 612, and then the driven toothed disc 606 can be driven to rotate by the driving motor 4, and then the trigger block 607 is fixedly connected with the inner wall of the driven toothed disc 606 at an equal distance, and the six trigger blocks 607 are arranged on one side wall facing the center of the driven toothed disc 606. The boost rod 608 is in the shape of an inclined plane, and the inner wall of the connecting tube 603 is fitted and slidably connected with the boost rod 608. At the same time, one end of the six boost rods 608 away from the center of the driven gear disc 606 is fixedly connected with a pressure cover 609, and the outer shape of the pressure cover 609 is semicircular, and one end face of the six pressure covers 609 facing the center of the driven gear disc 606 is fixedly connected with a spring 610, so that under normal conditions, the spring 610 can limit the position of the boost rod 608 to avoid arbitrary blocking of the boost hole 605. At the same time, the end face of the pressure cover 609 away from the center of the circle is fitted and slid with the inner wall of the driven gear disc 606, so that the outward distance of the boost rod 608 can be limited by the driven gear disc 606 to avoid the water pressure from pushing the boost rod 608 out of the connecting tube 603 during the water flow conveying process;

[0039] Then, when the driven gear disc 606 rotates, it can synchronously drive the trigger block 607 provided on the corresponding gland 609 to move in a circle, so that the gland 609 can be squeezed by the inclined surface, so that the gland 609 drives the booster rod 608 to partially block the booster hole 605 of the connecting pipe 603, so that the flow rate of water is increased, and when the trigger block 607 is not in contact with the gland 609, the spring 610 is used to reset, so that the flushing pressure of the flushing nozzle 604 can be intermittently increased or decreased, which can not only use short-term high pressure to flush away stubborn impurities, but also avoid long-term high-pressure flushing to cause damage to the surface of the film body 3;

[0040] As described above, when the film body 3 is being transported and prepared, the upper and lower surfaces of the film body 3 can be flushed from multiple angles through multiple flushing nozzles 604, thereby ensuring the comprehensive flushing of the film body 3, and at the same time, the trigger block 607 and the pressure cover 609 can be used to cooperate with each other to intermittently block the boost hole 605 partially, so that the flushing pressure of the flushing nozzle 604 can be increased or decreased intermittently, which can not only use short-term high pressure to flush away stubborn impurities, but also avoid long-term high-pressure flushing that causes damage to the surface of the film body 3, thereby ensuring the quality of the graphene film product prepared subsequently.

[0041] Embodiment 2, based on the above embodiment, the inner wall of the preparation box 1 is symmetrically provided with a reciprocating brushing mechanism 7 with the pressurized flushing mechanism 6 as the midpoint perpendicular line, so that during the flushing process of the film body 3, the surface of the film body 3 can be brushed in advance and any remaining impurities can be brushed away;

[0042] Further, the reciprocating scrubbing mechanism 7 includes a fixed plate 701, and the two side walls of the fixed plate 701 are fixed to the inner wall of the preparation box 1, the top of the fixed plate 701 is penetrated by a limiting groove 702, and the inner wall of the limiting groove 702 is slidably connected with a connecting rod 703, the top of the connecting rod 703 is fixedly connected with a hook ring 704, and the inner wall of the hook ring 704 is movably connected with a tension spring 705, the other end of the tension spring 705 is movably connected with another hook ring 704, and the outer wall of the other hook ring 704 is fixedly connected to the inner wall of the driven gear plate 606;

[0043] More specifically, in this embodiment, first, a limiting groove 702 is provided through the top of the fixed plate 701, and the inner wall of the limiting groove 702 is slidably connected with the connecting rod 703, and the bottom of the connecting rod 703 is fixedly connected with a brush block 706, and at the same time, a brush 707 is fixedly installed at the bottom of the brush block 706, and the two side walls of the connecting rod 703 are fixedly connected with connecting blocks 708, and the bottom of the connecting block 708 is slidably fitted with the top of the fixed plate 701, and at the same time, the top of the brush block 706 is slidably fitted with the bottom of the fixed plate 701, so that in a normal state, the position of the brush 707 can be limited by the cooperation of the brush block 706 and the connecting block 708, so that the brush 707 symmetrically installed up and down can fit with the upper and lower surfaces of the film body 3;

[0044] Then, a hook ring 704 is fixedly connected to the top of the connecting rod 703, and a tension spring 705 is movably connected to the inner wall of the hook ring 704, and the other end of the tension spring 705 is movably connected to another hook ring 704, and at the same time, the outer wall of the other hook ring 704 is fixedly connected to the inner wall of the driven toothed disc 606, so that when the driven toothed disc 606 rotates repeatedly, the elasticity of the tension spring 705 can be used to drive the brushes 707 symmetrically installed up and down to perform reciprocating scrubbing, and the cooperation of the front and rear sets of brushes 707 can be used to achieve the front side brush block 706 to pre-scrub the surface of the film body 3 to remove impurities that are easy to remove on the surface, and loosen stubborn impurities to facilitate subsequent flushing, and the rear side brush block 706 can be used to further brush away impurities that may remain after flushing;

[0045] Then, a guide chute 12 is opened through the inner wall of the bottom of the preparation box 1, and a water leakage hole is opened through the inner wall of the bottom of the preparation box 1, and a collecting water tank 13 is fixedly installed at the bottom of the preparation box 1, and a suction pipe 14 is fixedly connected to one side wall of the collecting water tank 13, and the other end of the suction pipe 14 is fixed to the input end of the water pump 9, so that during the flushing process, the guide chute 12 and the water leakage hole can be used to guide the flushed water into the collecting water tank 13, and the suction pipe 14 can be used to enable the water pump 9 to repeatedly use the water flow during the flushing process, saving water resource loss;

[0046] As described above, when the film body 3 is being transported and prepared, the brush blocks 706 symmetrically arranged front and rear can be driven by repeated rotation of the driven gear plate 606 to brush the upper and lower surfaces of the film body 3. The front brush block 706 can be used to brush the surface of the film body 3 in advance to remove impurities that are easy to remove on the surface and loosen stubborn impurities for subsequent flushing. The rear brush block 706 can also be used to further brush away impurities that may remain after flushing, thereby further ensuring the quality of the finished graphene film prepared by the device.

[0047] The preparation process of the graphene film is as follows: first, during the preparation process, two groups of symmetrically installed conveying rollers 2 are used to convey the film body 3; then, during the conveying process, water is conveyed into the water storage tray 601 by a water pump 9, so that the water in the water storage tray 601 enters the connecting pipe 603 through the pressure-increasing hole 605 and is sprayed out through the flushing nozzle 604; and through the arrangement of multiple flushing nozzles 604, the upper and lower surfaces of the film body 3 can be fully flushed;

[0048] Then, during the flushing process, the driven motor 4 drives the driven gear disc 606 to rotate, causing the trigger block 607 to move in a circle, so that the inclined surface can be used to squeeze the pressure cover 609, so that the pressure cover 609 drives the pressure boosting rod 608 to partially block the pressure boosting hole 605 of the connecting pipe 603, so that the flow rate of water is increased, which can not only use short-term high pressure to flush out stubborn impurities, but also avoid long-term high-pressure flushing to cause damage to the surface of the film body 3;

[0049] When the driven gear plate 606 rotates repeatedly, the elasticity of the tension spring 705 can be used to drive the brushes 707 symmetrically installed above and below to perform reciprocating brushing. By utilizing the cooperation of the front and rear sets of brushes 707, it is possible to use the front brush block 706 to brush the surface of the film body 3 in advance to remove impurities that are easy to remove on the surface and loosen stubborn impurities for subsequent flushing. The rear brush block 706 can also be used to further brush away impurities that may remain after flushing.

[0050] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A graphene film preparation device, characterized in that: It comprises a preparation box (1), a conveying roller group (2), and a film body (3); a driving motor (4) is fixedly mounted on the top of the preparation box (1), and an output shaft at one end of the driving motor (4) is fixedly connected to a driving gear (5); a through hole (8) is penetrated and opened on the top of the preparation box (1) corresponding to the driving gear (5); The inner wall of the preparation box (1) is provided with a pressurized flushing mechanism (6) so as to flush the upper and lower surfaces of the film body (3) from multiple angles and intermittently increase the flushing pressure when the film body (3) is being transported and prepared; The pressurized flushing mechanism (6) comprises a water storage pan (601), and the outer wall of the water storage pan (601) is symmetrically and equidistantly fixedly connected to a support plate (602), one end of the support plate (602) is fixed to the inner wall of the preparation box (1); the interior of the water storage pan (601) is equidistantly fixedly connected to connecting pipes (603), one end of six connecting pipes (603) facing the center of the water storage pan (601) is fixedly connected to a flushing nozzle (604), and the outer wall of the connecting pipe (603) is penetrated by a pressurized hole (605), and the connecting pipe (603) is connected to the interior of the water storage pan (601) through the pressurized hole (605); the preparation A water pump (9) is fixedly mounted on an outer wall of one side of the box (1), and a delivery pipe (10) is fixedly connected to the delivery end of the water pump (9); a shunt pipe (11) is symmetrically fixedly connected to the outer wall of the delivery pipe (10), and the other end of the shunt pipe (11) passes through the interior of a support plate (602) and is fixedly connected to both end surfaces of a water storage tray (601), and the interior of the shunt pipe (11) is connected to the interior of the water storage tray (601); a driven gear disc (606) is meshed with the inner wall of the through hole (8) on the bottom side of the driving gear (5), and a slide plate (611) is fixedly connected to the inner wall of the driven gear disc (606) at equal distances, and the inner wall of the water storage tray (601) is symmetrically fixedly connected to the outer wall of the driven gear disc (606). An annular groove (612) is provided on the outer wall corresponding to the slide plate (611), and the outer wall of the other end of the slide plate (611) fits and slides with the inner wall of the annular groove (612); and the inner wall of the driven gear plate (606) is fixedly connected with trigger blocks (607) at equal distances, and one side wall of the six trigger blocks (607) facing the center of the driven gear plate (606) is in an inclined shape; the inner wall of the connecting tube (603) is fitted and slidably connected with a booster rod (608), and one end of the six booster rods (608) away from the center of the driven gear plate (606) is fixedly connected with a pressure cover (609), and the shape of the pressure cover (609) is semicircular; the six pressure covers (609) face the driven gear plate (606). One end face of the center of the disk (606) is fixedly connected to a spring (610), and one end face of the gland (609) away from the center of the circle is slidably fitted with the inner wall of the driven gear disk (606), the gland (609) and the connecting pipe (603) form a telescopic structure through the spring (610), and the other end of the spring (610) is fixedly connected to the outer wall of the water storage disk (601); the inner wall of the preparation box (1) is symmetrically provided with a reciprocating brushing mechanism (7) with the pressurized flushing mechanism (6) as the mid-vertical line, so that during the flushing process of the film body (3), the surface of the film body (3) can be brushed in advance and any residual impurities can be brushed away;The reciprocating scrubbing mechanism (7) comprises a fixed plate (701), and the two side walls of the fixed plate (701) are fixed to the inner wall of the preparation box (1); a limiting groove (702) is provided through the top of the fixed plate (701), and the inner wall of the limiting groove (702) is slidably connected to a connecting rod (703); a hook ring (704) is fixedly connected to the top of the connecting rod (703), and a tension spring (705) is movably connected to the inner wall of the hook ring (704); the other end of the tension spring (705) is movably connected to another hook ring (704), and the outer wall of the other hook ring (704) is fixedly connected to the inner wall of the driven gear disc (606); the bottom of the connecting rod (703) is fixedly connected to the inner wall of the driven gear disc (606); A brush block (706) is connected, and the two side walls of the connecting rod (703) are fixedly connected with connecting blocks (708), and the bottom of the connecting block (708) fits and slides with the top of the fixing plate (701), and the top of the brush block (706) fits and slides with the bottom of the fixing plate (701); the bottom inner wall of the preparation box (1) is provided with a guide inclined groove (12), and the bottom inner wall of the preparation box (1) is penetrated with a water leakage hole, and the bottom of the preparation box (1) is fixedly installed with a collection tank (13), and one side wall of the collection tank (13) is fixedly connected with a suction pipe (14), and the other end of the suction pipe (14) is fixed to the input end of the water pump (9). ; 2. The graphene film preparation device according to claim 1, characterized in that: A brush (707) is fixedly mounted on the bottom of the brush block (706).

3. The method for preparing a graphene film preparation device according to claim 1, characterized in that: The following steps are involved: S1: transport and flushing: two groups of symmetrically installed transport rollers (2) are used to transport the film body (3), and then water is sent into the water storage tray (601) through a water pump (9), so that the water in the water storage tray (601) enters the connecting pipe (603) through the pressure-increasing hole (605) and is sprayed out through the flushing nozzle (604), thereby fully flushing the upper and lower surfaces of the film body (3); S2: intermittent pressurization: the driven motor (4) drives the driven gear disc (606) to rotate, causing the trigger block (607) to move in a circular motion, and the inclined surface is used to press the pressure cover (609), so that the pressure cover (609) drives the pressure-increasing rod (608) to partially block the pressure-increasing hole (605) of the connecting pipe (603), thereby increasing the flow rate of water, which can not only use short-term high pressure to flush out stubborn impurities, but also avoid long-term high-pressure flushing to cause damage to the surface of the membrane body (3); S3: Repeated brushing: When the driven gear disc (606) rotates repeatedly, the elasticity of the tension spring (705) can be used to drive the brushes (707) installed symmetrically up and down to perform reciprocating brushing. By using the cooperation of the front and rear sets of brushes (707), it is possible to use the front brush block (706) to pre-brush the surface of the film body (3) to remove impurities that are easy to remove on the surface and loosen stubborn impurities, and to use the rear brush block (706) to further brush away impurities that may remain after flushing.

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