Graphene stripping device

Abstract

The invention discloses a graphene stripping device, and belongs to the technical field of graphene processing. Aiming at the problems of non-uniform crushing, inaccurate feeding amount and temperature control and the like in the stripping process of graphite oxide in the prior art, the device is provided with a rolling crushing and accurate grinding mechanism in a crushing box, and uniform particles are formed through rolling primary crushing and secondary accurate grinding; the conveying mechanism conveys the finely ground particles to the stripping mechanism; the stripping mechanism comprises a weighing assembly and a heating assembly, the weighing assembly accurately controls the feeding amount of the graphite oxide, the heating assembly comprehensively heats to a high temperature, and a temperature sensor is used for accurately controlling the temperature; through the improvement of the shape and the structure, the device realizes uniform crushing, accurate feeding and temperature-controlled stripping of graphite oxide, and effectively improves the yield and the quality of graphene.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of graphene processing, and in particular to a graphene stripping device. BACKGROUND

[0002] As a two-dimensional material composed of single-layer carbon atoms, graphene has many excellent properties, such as high electron mobility, high strength, high thermal conductivity, etc., and shows great application potential in many fields such as electronics, energy, materials, and biomedical engineering. Therefore, how to efficiently and high-quality prepare graphene has become the focus of current scientific research and industry; At present, there are various methods for preparing graphene, such as mechanical stripping, chemical oxidation-reduction, chemical vapor deposition, and thermal reduction. Among them, the chemical oxidation-reduction method is one of the commonly used preparation methods due to its advantages of wide raw material sources, relatively low cost, and large-scale preparation. This method usually first oxidizes graphite to obtain graphite oxide, and then strips the graphite oxide to prepare graphene; However, in the process of stripping graphene by thermal reduction method, graphite oxide powder is usually heated and stripped, so that in the actual production process, on the one hand, in the crushing link of graphite oxide, some devices cannot fully and effectively crush the bulk graphite oxide, resulting in uneven particle size of the crushed graphite oxide, affecting the subsequent stripping effect and the quality of graphene; On the other hand, in the stripping link of graphite oxide, the conventional state is to directly put the graphite oxide into the high-temperature furnace, which is difficult to accurately control the amount of graphite oxide put in each time, and cannot guarantee that the amount of graphite oxide for each stripping reaction is accurate and consistent, thereby affecting the yield and quality of graphene. At the same time, the temperature control in the stripping process is not accurate enough, and too high or too low temperature will adversely affect the stripping effect of graphite oxide, making it difficult to obtain high-quality graphene products: In view of the above problems, the present application provides a graphene stripping device. SUMMARY

[0003] The present application provides a graphene stripping device, which solves the problems of uneven crushing, inaccurate amount and temperature control in the stripping process of graphite oxide in the prior art.

[0004] The present application provides the following technical solutions: A graphene stripping device, comprising a crushing box, wherein an inclined guide plate is fixedly installed in the crushing box, one side of the inclined guide plate is fixedly installed with an arc-shaped screen, which is used for preliminary screening of graphite oxide, one side of the arc-shaped screen is fixedly installed with a baffle, and the baffle is fixedly installed in the crushing box, and the stripping device further comprises: The rolling and crushing mechanism is installed on the crushing box, so that the graphite oxide on the inclined guide plate can be preliminarily crushed, and the graphite oxide can pass through the screening of the arc-shaped screen. The fine grinding mechanism is installed in the crushing box and is located below the arc-shaped screen, so that the crushed graphite oxide can be secondarily ground to form uniform particles. The conveying mechanism is installed in the crushing box and extends to the outside of the crushing box on one side, and is used for conveying the fine-ground graphite oxide particles. The stripping mechanism is arranged on one side of the crushing box, one end of the conveying mechanism is connected with the stripping mechanism, so that the fine-ground graphite oxide can be conveyed into the stripping mechanism, and the graphite oxide can be stripped by high temperature to form graphene material.

[0005] Further, the rolling and crushing mechanism includes a bracket fixedly installed on the crushing box, the bracket is parallel to the position where the inclined guide plate is arranged, a support frame is fixedly installed on one side of the bracket, the support frame is connected with the crushing box on one side, two first electric push rods are fixedly installed on the bracket in a symmetrical manner, a same moving plate is fixedly installed on the output shafts of the two first electric push rods, two limiting holes are symmetrically formed in the bracket, two sliding plates are fixedly installed on the two sides of the moving plate, the two sliding plates are respectively located in the two limiting holes and are respectively connected with the inner walls of the two limiting holes in a sliding manner, a moving frame is fixedly installed on one side of the moving plate, the moving frame extends above the inclined guide plate and is rotatably connected with a compression roller, the compression roller is matched with the inclined guide plate or the arc-shaped screen, and is used for rolling and crushing the blocky graphite oxide.

[0006] Further, a guide plate is fixedly installed on the moving frame, the guide plate is used for guiding and conveying the graphite oxide to be crushed to a position where the graphite oxide can be rolled and crushed by the compression roller, and a cleaning frame is also fixedly installed in the moving frame, the cleaning frame is triangular, and one side of an opening of the cleaning frame is in contact with one side of the compression roller.

[0007] Further, the fine grinding mechanism includes a driving motor fixedly installed on one side of the crushing box, an output shaft of the driving motor extends into the crushing box and is fixedly installed with a transmission shaft, the transmission shaft extends to the other side of the crushing box and is rotatably connected with the crushing box, a grinding roller is fixedly sleeved on the transmission shaft and located in the crushing box, a matching grinding box is fixedly installed on the inner wall of one side of the crushing box, one side of the matching grinding box close to the grinding roller is an arc surface structure with the same curvature as the center of the grinding roller, and the matching grinding box is matched with the grinding roller.

[0008] Further, the conveying mechanism comprises a hopper fixedly installed in the crushing box, the hopper is located below the grinding roller and the matching grinding box, two guide plates are fixedly installed in the hopper in a symmetrical inclined manner, the graphite oxide particles to be conveyed can be guided and conveyed, one side of the hopper extends to the outside of the crushing box, a dilute phase conveying pump is fixedly installed on one side of the hopper, the suction end of the dilute phase conveying pump extends into the hopper and is fixedly installed with a suction pipe, the bottom end opening of the suction pipe is in the shape of a horn, a conveying pipe is fixedly installed on the output end of the dilute phase conveying pump, one end of the conveying pipe is connected with the stripping mechanism.

[0009] Further, the stripping mechanism comprises a base frame arranged on one side of the crushing box, four mounting rods are fixedly and symmetrically installed on the top of the base frame, the same heat preservation pipe is fixedly installed on the top end of the four mounting rods, the weighing assembly is arranged on the top of the heat preservation pipe, one end of the conveying pipe is connected with the weighing assembly, the heating assembly is arranged in the heat preservation pipe, the weighed graphite oxide particles can be rapidly heated at high temperature, so that the graphite oxide particles are subjected to stripping reaction.

[0010] Further, the weighing assembly comprises a metering box fixedly installed at the top end of the heat preservation pipe, one end of the conveying pipe extends into the metering box and is fixedly connected with the top inner wall of the metering box, a stepping motor is fixedly installed on one side of the metering box, the output shaft of the stepping motor extends into the metering box and is fixedly installed with an adjusting plate, a connecting shaft is fixedly installed on one side of the adjusting plate, one end of the connecting shaft extends to the outside of the metering box, a bearing supporting plate is arranged in the adjusting plate, a plurality of supporting boxes are fixedly and symmetrically installed on the bottom of the bearing supporting plate, a pressure sensor is fixedly installed on the inner wall of the bottom of each supporting box, a plurality of pressing rods are fixedly and symmetrically installed on the bottom of the bearing supporting plate, the bottom end of each pressing rod extends into the corresponding supporting box and is slidably connected with the inner wall of the supporting box, and the pressing rods are used for pressing the pressure sensors.

[0011] Further, the metering box is fixedly installed with a guide hopper below the adjusting plate, the bottom end of the guide hopper extends into the heat preservation pipe, a rotating shaft is rotatably connected in the guide hopper, and a isolation cover plate is hinged at the bottom opening of the guide hopper, the isolation cover plate is used for plugging the bottom opening of the guide hopper, so that the heat generated by the heating assembly can be isolated when the graphite oxide particles are subjected to stripping treatment, a first connecting rod is fixedly sleeved on the rotating shaft and located in the guide hopper, one end of the first connecting rod is rotatably connected with a second connecting rod, and the bottom end of the second connecting rod is rotatably connected with the top of the isolation cover plate, the heat preservation pipe and the metering box are fixedly installed with the same protective cover on one side, one end of the connecting shaft and one end of the rotating shaft both extend into the protective cover, synchronous wheels are fixedly sleeved on the rotating shaft and the connecting shaft and located in the protective cover, and the same synchronous belt is drivingly sleeved on the two synchronous wheels.

[0012] Further, the heating assembly comprises a heating furnace located in the heat preservation pipe, a bottom cover located below the heat preservation pipe is fixedly installed at the bottom of the heating furnace, the bottom cover is tightly clamped with the bottom opening of the heat preservation pipe, the bottom cover is slidably connected with the plurality of mounting rods respectively, a bottom heating box is fixedly installed on the inner wall of the bottom of the heating furnace, an electric heating ring is fixedly installed in the bottom heating box, a heat exchange plate is fixedly installed at the top of the bottom heating box, an electric heating cage and a sealing ring are also fixedly installed on the heating furnace, the sealing ring is used for protecting the electric heating cage, a second electric push rod is fixedly installed on the inner wall of the bottom of the bottom frame, the output shaft of the second electric push rod extends to the upper side of the bottom frame and is fixedly connected with the bottom of the bottom cover.

[0013] Further, a plurality of temperature sensors are installed at the internal partition layer of the heating furnace at equal intervals, and the heating assembly further comprises a processor, which is electrically connected with the stepping motor, the dilute phase conveying pump, the plurality of pressure sensors, the second electric push rod and the plurality of temperature sensors respectively.

[0014] It should be understood that the above general description and the following detailed description are only exemplary and cannot limit the present application.

[0015] Beneficial effects: in the application, by setting the rolling and crushing mechanism, after the graphite oxide to be crushed is put on the inclined guide plate, the two first electric push rods are started to drive the moving plate to move back and forth in the bracket, so as to drive the pressure roller to roll back and forth, and the rolling force of the pressure roller can crush the graphite oxide, and the crushed graphite oxide can fall on the corresponding position of the fine grinding mechanism through the arc-shaped screen, so as to facilitate further fine grinding of the graphite oxide; In the application, the graphite oxide particles screened by the arc-shaped screen fall on the grinding roller, the driving motor is started to drive the transmission shaft to rotate, the grinding roller is driven to rotate, so as to convey the graphite oxide particles on the grinding roller to the side close to the matching grinding box, and then the graphite oxide particles are finely ground again under the support of the matching grinding box, and after the graphite oxide particles are formed into particles with uniform size, the particles fall in the conveying mechanism; In the application, the graphite oxide particles after fine grinding fall in the hopper, the graphite oxide particles flow to the suction pipe under the guidance of the two guide plates, the dilute phase conveying pump is started to generate suction force, so as to suck out the graphite oxide and convey it to the stripping mechanism for stripping processing; In the present application, by setting the stripping mechanism, the refined ground graphite particles can be transported to the weighing assembly through the dilute phase delivery pump and the delivery pipe, and the oxidation graphite that needs to be stripped is quantitatively weighed, so that the amount of oxidation graphite in each stripping reaction can be accurately controlled, and after the weighing is completed, the oxidation graphite powder can be transported into the heating assembly, so that the heating assembly can quickly heat the oxidation graphite powder, and the oxidation graphite particles are subjected to stripping reaction treatment.

[0016] The present application uniformly sizes the oxidation graphite particles by rolling and refining, improves the subsequent stripping effect, accurately controls the oxidation graphite feeding amount by using the metering box, cooperates with the heating assembly with accurate temperature control, overcomes the problems of uneven crushing, inaccurate feeding and temperature control in the traditional method, and effectively improves the yield and quality of graphene. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a first perspective structure three-dimensional schematic view of the embodiment of the present application.

[0018] Figure 2 It is a second perspective structure three-dimensional schematic view of the embodiment of the present application.

[0019] Figure 3 It is a three-dimensional schematic view of the crushing box cross-sectional structure of the embodiment of the present application.

[0020] Figure 4 It is a top view three-dimensional schematic view of the bracket, two first electric push rods and moving frame connection structure of the embodiment of the present application.

[0021] Figure 5 It is a bottom view three-dimensional schematic view of the bracket, two first electric push rods and moving frame connection structure of the embodiment of the present application.

[0022] Figure 6 It is a cleaning frame and compression roller structure schematic view of the embodiment of the present application.

[0023] Figure 7 It is a front perspective cross-sectional structure schematic view of the embodiment of the present application.

[0024] Figure 8 It is a three-dimensional schematic view of the step motor, adjusting plate, synchronous belt, shaft and isolation cover plate connection structure of the embodiment of the present application.

[0025] Figure 9 It is a three-dimensional schematic view of the adjusting plate, multiple support boxes, multiple pressure sensors, multiple pressure rods and bearing support plate connection structure of the embodiment of the present application.

[0026] Figure 10 It is a three-dimensional schematic view of the chassis, multiple mounting rods, second electric push rod, bottom cover and heating furnace connection structure of the embodiment of the present application.

[0027] Figure 11 The bottom cover and the heating furnace of the embodiment of the present application are shown in a cross-sectional structure schematic view.

[0028] Figure 12 The three-dimensional schematic view of the cross-sectional structure of the heating furnace of the embodiment of the present application is shown.

[0029] Figure 13 The block diagram of the electrical accessory connection structure of the embodiment of the present application is shown.

[0030] Reference signs: 1, crushing box; 2, inclined guide plate; 3, arc-shaped screen; 4, baffle; 5, bracket; 6, support frame; 7, first electric push rod; 8, moving plate; 9, sliding plate; 10, moving frame; 11, compression roller; 12, cleaning frame; 13, guide plate; 14, driving motor; 15, transmission shaft; 16, grinding roller; 17, matched grinding box; 18, hopper; 19, guide plate; 20, dilute phase conveying pump; 21, suction pipe; 22, base frame; 23, mounting rod; 24, heat preservation pipe; 25, metering box; 26, conveying pipe; 27, stepping motor; 28, adjusting plate; 29, bearing support plate; 30, support box; 31, compression rod; 32, pressure sensor; 33, guide hopper; 34, isolation cover plate; 35, rotating shaft; 36, first connecting rod; 37, second connecting rod; 38, connecting shaft; 39, synchronous wheel; 40, synchronous belt; 41, second electric push rod; 42, bottom cover; 43, heating furnace; 44, bottom heating box; 45, electric heating ring; 46, heat exchange plate; 47, electric heating cage; 48, sealing ring; 49, protective cover; 50, temperature sensor. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0032] Embodiment 1: Reference Figures 1-13 A stripping device includes a crushing box 1, an inclined guide plate 2 is fixedly installed in the crushing box 1 and arranged obliquely, an arc-shaped screen 3 is fixed on one side of the inclined guide plate 2, a baffle 4 is fixed on one side of the arc-shaped screen 3, and the baffle 4 is fixed in the crushing box 1.

[0033] As Figures 4-5As shown, the crushing box 1 is provided with a rolling crushing mechanism, the bracket 5 of the rolling crushing mechanism is fixed on the crushing box 1, and the position of the bracket 5 is parallel to the inclined guide plate 2. One side of the bracket 5 is fixedly connected with the support frame 6, and the other side of the support frame 6 is connected with the crushing box 1. The support frame 6 can support the bracket 5 after the crushing box 1 is connected with the support frame 6 and arranged on the ground. Two first electric push rods 7 are symmetrically fixed on the bracket 5, and the output shafts of the two first electric push rods 7 are fixed with the same moving plate 8. Two limiting holes are symmetrically arranged on the bracket 5, and two sliding plates 9 are fixedly arranged on the two sides of the moving plate 8 and located in the two limiting holes and connected with the inner walls in a sliding mode. The moving plate 8 is fixedly connected with the moving frame 10, and the moving frame 10 extends to above the inclined guide plate 2 and is rotatably connected with the compression roller 11. The compression roller 11 is matched with the inclined guide plate 2 or the arc-shaped screen 3. The moving frame 10 is fixedly connected with the flow guide plate 13, which is used for guiding the oxidized graphite to the rolling position of the compression roller 11. The triangular cleaning frame 12 is fixed in the moving frame 10, and the opening side of the cleaning frame 12 is in contact with one side of the compression roller 11. After the oxidized graphite to be crushed is put into the inclined guide plate 2, the two first electric push rods 7 are started to drive the moving plate 8 to move back and forth in the bracket 5, and the compression roller 11 is driven to roll back and forth to crush the oxidized graphite by the rolling force. The crushed oxidized graphite falls to the corresponding position of the fine grinding mechanism through the arc-shaped screen 3.

[0034] As shown, Figures 2-3 A fine grinding mechanism for secondary grinding of the oxidized graphite is arranged in the crushing box 1, and the fine grinding mechanism is located below the arc-shaped screen 3. The driving motor 14 included in the mechanism is fixed on one side of the crushing box 1, the output shaft of the driving motor 14 extends into the crushing box 1 and is fixed with the transmission shaft 15, and the transmission shaft 15 extends to the other side of the crushing box 1 and is rotatably connected with the crushing box 1. The grinding roller 16 fixedly sleeved on the transmission shaft 15 is arranged in the crushing box 1, and the grinding box 17 is fixedly matched with the inner wall of one side of the crushing box 1. The side of the matching grinding box 17 close to the grinding roller 16 is an arc surface structure consistent with the curvature of the center of the grinding roller 16 and is matched with the grinding roller 16. The oxidized graphite particles screened through the arc-shaped screen 3 fall on the grinding roller 16. The driving motor 14 is started to drive the transmission shaft 15 to rotate, and then the grinding roller 16 is driven to rotate. The oxidized graphite particles are transported to the side close to the matching grinding box 17. The oxidized graphite particles are secondarily ground under the support of the matching grinding box 17, and then fall to the conveying mechanism after forming uniform particles.

[0035] As shown, Figures 2-3As shown, a conveying mechanism is also arranged in the crushing box 1, and a hopper 18 contained in the mechanism is fixed in the crushing box 1 below the grinding roller 16 and the matching grinding box 17. Two guide plates 19 are symmetrically fixed in the hopper 18, and one side of the hopper 18 extends to the outside of the crushing box 1 and is fixed with a dilute phase conveying pump 20. The suction end of the dilute phase conveying pump 20 extends into the hopper 18 and is fixed with a suction pipe 21, and the bottom end of the suction pipe 21 is opened in a trumpet shape. The output end of the dilute phase conveying pump 20 is fixed with a conveying pipe 26, and one end of the conveying pipe 26 is connected with the stripping mechanism. The milled graphite oxide particles fall into the hopper 18, flow to the suction pipe 21 under the guidance of the two guide plates 19, and the dilute phase conveying pump 20 is started to generate suction force to suck the graphite oxide and convey it to the stripping mechanism through the conveying pipe 26.

[0036] The present application can be used in the field of graphene processing technology, and can also be used in other fields applicable to the present application.

[0037] Embodiment 2: Reference Figures 7-13 On the basis of Embodiment 1, an improved graphene stripping device is applied to the field of graphene processing technology. In the technical solution, a stripping mechanism is arranged on one side of the crushing box 1 to realize high-temperature heating stripping reaction of the graphite oxide particles. The mechanism contains a chassis 22 arranged on one side of the crushing box 1, and four mounting rods 23 are symmetrically fixed on the top of the chassis 22. A same heat preservation pipe 24 is fixed on the top of the four mounting rods 23. A weighing assembly is arranged on the top of the heat preservation pipe 24, one end of a conveying pipe 26 is connected with the weighing assembly, and a heating assembly is arranged in the heat preservation pipe 24.

[0038] As Figures 7-9As shown, in the weighing assembly, the metering box 25 arranged in the weighing assembly is fixed to the top end of the heat preservation pipe 24, and the conveying pipe 26 extends to the inside of the metering box 25 and is fixedly connected with the inner wall of the top of the metering box 25. The step motor 27 is fixed to one side of the metering box 25, the output shaft of the step motor 27 extends to the inside of the metering box 25 and is fixed with the adjusting plate 28, and the adjusting plate 28 is fixedly installed with the connecting shaft 38 at the central position of one side, and the connecting shaft 38 extends to the outside of the metering box 25. The bearing supporting plate 29 is arranged in the adjusting plate 28, the bottom of the bearing supporting plate 29 is symmetrically fixed with a plurality of supporting boxes 30, the inner wall of the bottom of the supporting box 30 is fixed with the pressure sensor 32, and the bottom of the bearing supporting plate 29 is symmetrically fixed with a plurality of pressing rods 31, the bottom end of the pressing rod 31 extends to the corresponding supporting box 30 and is slidably connected with the inner wall of the supporting box 30, and the pressing rod 31 is used for pressing the pressure sensor 32. The guide hopper 33 is fixed in the metering box 25, the guide hopper 33 is located below the adjusting plate 28, and the bottom end extends to the inside of the heat preservation pipe 24. The rotating shaft 35 is rotatably connected in the guide hopper 33, and the guide hopper 33 is hingedly connected with the isolation cover plate 34 at the opening in the bottom, and the isolation cover plate 34 is used for plugging the opening in the bottom of the guide hopper 33. The first connecting rod 36 located in the guide hopper 33 is fixed on the rotating shaft 35, one end of the first connecting rod 36 is rotatably connected with the second connecting rod 37, and the bottom end of the second connecting rod 37 is rotatably connected with the top of the isolation cover plate 34. The heat preservation pipe 24 and the metering box 25 are fixed with the same protective cover 49 on one side, one end of the connecting shaft 38 and one end of the rotating shaft 35 extend into the protective cover 49, and the rotating shaft 35 and the connecting shaft 38 are fixed with the synchronous wheel 39 located in the protective cover 49, and the two synchronous wheels 39 are drivingly sleeved with the same synchronous belt 40. The graphite oxide particles are conveyed to the bearing supporting plate 29, the weight of the bearing supporting plate 29 increases, a plurality of pressing rods 31 press a plurality of pressure sensors 32 respectively, the pressure sensor 32 measures the weight of the graphite oxide particles after feeling the weight increase, the conveying is stopped after reaching the single peeling weight, the step motor 27 is started to drive the adjusting plate 28 to overturn, and the weighed graphite particles are poured into the heating assembly. When the graphite particles are weighed, the isolation cover plate 34 plugs the guide hopper 33, and the heat of the heating assembly is isolated from being transmitted upward. When the adjusting plate 28 rotates, the connecting shaft 38 rotates, the rotating shaft 35 rotates under the driving cooperation of the two synchronous wheels 39 and the synchronous belt 40, the rotating shaft 35 drives the first connecting rod 36 to rotate downward, the isolation cover plate 34 is turned downward under the driving action of the first connecting rod 36 and the second connecting rod 37, the guide hopper 33 is communicated, the graphite oxide particles on the bearing supporting plate 29 are accurately guided to fall into the heating assembly through the guide hopper 33, and the step motor 27 is started to drive the adjusting plate 28 to rotate reversely after the feeding is completed, so that the isolation cover plate 34 is reset to close the guide hopper 33.

[0039] As Figures 10-12As shown, in the heating assembly, the heating furnace 43 contained therein is located in the heat preservation tube 24, the bottom cover 42 is fixedly installed at the bottom of the heating furnace 43, the bottom cover 42 is located below the heat preservation tube 24 and is tightly clamped with the bottom opening of the heat preservation tube 24, and the bottom cover 42 is respectively slidably connected with the plurality of mounting rods 23 through the sliding sleeves slidably arranged on the plurality of mounting rods 23. The inner wall of the bottom of the heating furnace 43 is fixedly provided with the bottom heating box 44, the bottom heating box 44 is fixedly provided with the electric heating ring 45, and the top of the bottom heating box 44 is fixedly provided with the heat exchange plate 46. The electric heating cage 47 and the sealing ring 48 are also respectively fixed on the heating furnace 43, and the sealing ring 48 is used to protect the electric heating cage 47. The second electric push rod 41 is fixedly arranged on the inner wall of the bottom of the base frame 22, the output shaft of the second electric push rod 41 extends above the base frame 22 and is fixedly connected with the bottom of the bottom cover 42. The second electric push rod 41 is started to drive the bottom cover 42 to move upward along the plurality of mounting rods 23, the heating furnace 43 is moved into the heat preservation tube 24, the electric heating ring 45 and the electric heating cage 47 are powered on, and the space inside the heating furnace 43 is heated to a high temperature state (the temperature is 1000-1100°C), the bottom cover 42 is tightly clamped and sealed with the heat preservation tube 24 after moving upward, so as to avoid gas leakage. After the temperature reaches the requirement, the oxidized graphite is put into the heating furnace 43, the high temperature is used for rapid heating, the oxygen-containing functional groups between the layers of the oxidized graphite are rapidly decomposed to generate a large amount of gas, the gas pressure overcomes the van der Waals force between the layers of the graphene, the stacked oxidized graphene layers are “blown open”, and the volume is expanded by hundreds of times to form fluffy and vermicular reduced graphene oxide.

[0040] As shown in the drawings, Figures 11-13 A plurality of temperature sensors 50 are arranged at equal intervals at the internal partition of the heating furnace 43, and the device further comprises a processor, which is electrically connected with the stepping motor 27, the dilute phase conveying pump 20, the plurality of pressure sensors 32, the second electric push rod 41 and the plurality of temperature sensors 50. The temperature inside the heating furnace 43 is measured by the temperature sensor 50, the temperature of the heating furnace 43 is accurately controlled, after the temperature reaches the requirement, the processor starts the stepping motor 27 to drive the adjusting plate 28 to overturn, the oxidized graphite particles are quickly injected into the heating furnace 43 for peeling reaction, and after the peeling reaction time, the processor starts the second electric push rod 41 to move the heating furnace 43 downward out of the heat preservation tube 24, and the graphene formed by peeling is taken out.

[0041] Working principle: in the production of graphene, first put the graphite oxide into the inclined guide plate 2 in the crushing box 1, start the two first electric push rod 7 on the bracket 5 of the rolling crushing mechanism to drive the moving plate 8 to move back and forth in the bracket 5, drive the pressure roller 11 on the moving frame 10 to reciprocate on the inclined guide plate 2 or the arc-shaped screen 3, roll and crush the blocky graphite oxide, the guide plate 13 guides the graphite oxide to the position where the pressure roller 11 can roll and crush, the cleaning frame 12 scrapes the graphite powder adhered to the pressure roller 11, so that the pressure roller 11 continues to roll and crush, and the crushed graphite oxide falls on the corresponding position of the fine grinding mechanism through the arc-shaped screen 3; start the drive motor 14 in the fine grinding mechanism to drive the transmission shaft 15 to rotate, so that the grinding roller 16 on the transmission shaft 15 rotates, the graphite oxide particles falling on the grinding roller 16 are transported to the side close to the matching grinding box 17, and the graphite oxide particles are finely ground again under the support of the matching grinding box 17, and then fall into the hopper 18 of the conveying mechanism; the two guide plates 19 in the hopper 18 guide the graphite oxide particles to flow to the suction pipe 21, and the dilute phase conveying pump 20 is started to generate suction force, so that the graphite oxide particles are conveyed to the metering box 25 of the stripping mechanism through the suction pipe 21 and the conveying pipe 26 and are loaded on the carrying plate 29; the weight of the carrying plate 29 increases, a plurality of pressure rods 31 press a plurality of pressure sensors 32 respectively, the pressure sensors 32 measure the weight until the single stripping weight is reached, the conveying is stopped, the stepping motor 27 is started to drive the adjusting plate 28 to overturn, in the process of rotating the adjusting plate 28, the connecting shaft 38 is driven to rotate, the transmission shaft 35 is driven to rotate through the transmission cooperation of the two synchronous wheels 39 and the synchronous belt 40, the first connecting rod 36 on the transmission shaft 35 rotates downward, and the second connecting rod 37 drives the isolation cover plate 34 to overturn downward, so that the guide funnel 33 is in a flowing state, the graphite oxide particles on the carrying plate 29 accurately fall into the heating furnace 43 of the heating assembly through the guide funnel 33, after the feeding is completed, the stepping motor 27 is started to drive the adjusting plate 28 to rotate reversely, so that the isolation cover plate 34 is reset to close the guide funnel 33; the second electric push rod 41 is started to drive the bottom cover 42 to move upward along the plurality of mounting rods 23, so that the heating furnace 43 is moved into the heat preservation pipe 24, the bottom cover 42 is tightly clamped and sealed with the heat preservation pipe 24, the electric heating ring 45 and the electric heating cage 47 are powered on, the inside of the heating furnace 43 is heated to 1000-1100 DEG C, and a plurality of temperature sensors 50 measure the temperature; after the temperature reaches the requirement, the graphite oxide contacts the high-temperature environment, the interlayer oxygen-containing functional group rapidly decomposes to generate a large amount of gas, the stacked graphite oxide layers are “blown open” by overcoming the interlayer van der waals force, and fluffy, vermicular reduced graphene oxide is formed, after the stripping reaction time is set, the second electric push rod 41 is started to move the heating furnace 43 out of the heat preservation pipe 24, and the graphene formed by stripping is taken out.

[0042] However, as well known to those skilled in the art, the working principles and wiring methods of the first electric push rod 7, the driving motor 14, the dilute phase conveying pump 20, the stepping motor 27, the pressure sensor 32, the second electric push rod 41, the electric heating ring 45, the electric heating cage 47 and the temperature sensor 50 are common, which all belong to conventional means or common general knowledge, and thus will not be described here again, and those skilled in the art can make any selection according to their needs or convenience.

[0043] The above description of the embodiments is only used to help understand the method of the present application and its core idea. It should be pointed out that, for those skilled in the art, some improvements and modifications can be made to the present application without departing from the principles of the present application, and these improvements and modifications also fall within the protection scope of the claims of the present application.

Claims

1. A graphene stripping device, comprising a pulverizing box (1), an inclined surface guide plate (2) is fixedly installed in the pulverizing box (1) and is arranged in an inclined manner, an arc-shaped screen (3) is fixedly installed on one side of the inclined surface guide plate (2) and is used for preliminarily screening the graphite oxide, a baffle (4) is fixedly installed on one side of the arc-shaped screen (3) and is fixedly installed in the pulverizing box (1), characterized in that, The peeling device further comprises: A rolling and crushing mechanism is installed on the crushing box (1) to preliminarily crush the graphite oxide dropped on the inclined guide plate (2) so that the graphite oxide can pass through the screening of the arc-shaped screen (3); A fine grinding mechanism is installed in the crushing box (1) and located below the arc-shaped screen (3) to realize secondary grinding of the crushed graphite oxide so that the graphite oxide forms uniform particles; A conveying mechanism is installed in the crushing box (1) and one side of the conveying mechanism extends to the outside of the crushing box (1) to convey the fine-ground graphite oxide particles; A peeling mechanism is arranged on one side of the crushing box (1), one end of the conveying mechanism is connected with the peeling mechanism to convey the fine-ground graphite oxide into the peeling mechanism, and the graphite oxide is peeled by high-temperature principle to form graphene material.

2. The graphene exfoliation apparatus of claim 1, wherein, The rolling and crushing mechanism comprises a bracket (5) fixedly installed on the crushing box (1), the bracket (5) is parallel to the position where the inclined guide plate (2) is arranged, one side of the bracket (5) is fixedly installed with a support frame (6), one side of the support frame (6) is connected with the crushing box (1), two first electric push rods (7) are fixedly installed on the bracket (5) in a symmetrical manner, the same moving plate (8) is fixedly installed on the output shafts of the two first electric push rods (7), two limiting holes are symmetrically formed in the bracket (5), two slide plates (9) are fixedly installed on the two sides of the moving plate (8), the two slide plates (9) are respectively located in the two limiting holes and are in sliding connection with the inner walls of the two limiting holes, a moving frame (10) is fixedly installed on one side of the moving plate (8), one side of the moving frame (10) extends above the inclined guide plate (2) and is rotatably connected with a compression roller (11), the compression roller (11) cooperates with the inclined guide plate (2) or the arc-shaped screen (3) to roll and crush the blocky graphite oxide.

3. The graphene exfoliation apparatus of claim 2, wherein, A guide plate (13) is fixedly installed on the moving frame (10) to guide the graphite oxide to be crushed to a position where the graphite oxide can be rolled and crushed by the compression roller (11), a cleaning frame (12) is also fixedly installed in the moving frame (10), the cleaning frame (12) is triangular, and one side of the opening of the cleaning frame (12) is in contact with one side of the compression roller (11).

4. The graphene exfoliation apparatus of claim 1, wherein, The fine grinding mechanism comprises a driving motor (14) fixedly installed on one side of the crushing box (1), the output shaft of the driving motor (14) extends into the crushing box (1) and is fixedly installed with a transmission shaft (15), the transmission shaft (15) extends to the other side of the crushing box (1) and is rotatably connected with the crushing box (1), a grinding roller (16) is fixedly sleeved on the transmission shaft (15) and located in the crushing box (1), a matching grinding box (17) is fixedly installed on the inner wall of one side of the crushing box (1), one side of the matching grinding box (17) close to the grinding roller (16) is an arc surface structure consistent with the curvature of the center of the grinding roller (16), and the matching grinding box (17) cooperates with the grinding roller (16).

5. The graphene exfoliation apparatus of claim 1, wherein The conveying mechanism includes a hopper (18) fixedly installed in the crushing box (1), the hopper (18) is located below the grinding roller (16) and the matched grinding box (17), two guide plates (19) are fixedly installed in the hopper (18) in an inclined and symmetrical manner, the graphite oxide particles to be conveyed can be guided and conveyed, one side of the hopper (18) extends to the outside of the crushing box (1), a dilute phase conveying pump (20) is fixedly installed on one side of the hopper (18), the suction end of the dilute phase conveying pump (20) extends into the hopper (18) and is fixedly installed with a suction pipe (21), the bottom end opening of the suction pipe (21) is in a trumpet shape, a conveying pipe (26) is fixedly installed on the output end of the dilute phase conveying pump (20), and one end of the conveying pipe (26) is connected with the stripping mechanism.

6. The graphene exfoliation apparatus of claim 5, wherein, The stripping mechanism includes a base frame (22) arranged on one side of the crushing box (1), four mounting rods (23) are fixedly and symmetrically arranged on the top of the base frame (22), the same heat preservation pipe (24) is fixedly arranged at the top ends of the four mounting rods (23), a weighing assembly is arranged at the top of the heat preservation pipe (24), one end of the conveying pipe (26) is connected with the weighing assembly, and a heating assembly is arranged in the heat preservation pipe (24) and can rapidly heat the weighed graphite oxide particles at a high temperature to make the graphite oxide particles undergo a stripping reaction.

7. The graphene exfoliation apparatus of claim 6, wherein, The weighing assembly includes a metering box (25) fixedly installed at the top end of the heat preservation pipe (24), one end of the conveying pipe (26) extends into the metering box (25) and is fixedly connected with the top inner wall of the metering box (25), a stepping motor (27) is fixedly installed on one side of the metering box (25), the output shaft of the stepping motor (27) extends into the metering box (25) and is fixedly installed with an adjusting plate (28), a connecting shaft (38) is fixedly installed on one side of the adjusting plate (28), one end of the connecting shaft (38) extends to the outside of the metering box (25), a bearing supporting plate (29) is arranged in the adjusting plate (28), a plurality of supporting boxes (30) are fixedly and symmetrically arranged on the bottom of the bearing supporting plate (29), a pressure sensor (32) is fixedly installed on the bottom inner wall of each supporting box (30), a plurality of pressing rods (31) are fixedly and symmetrically arranged on the bottom of the bearing supporting plate (29), the bottom end of each pressing rod (31) extends into the corresponding supporting box (30) and is in sliding connection with the inner wall of the supporting box (30), and the pressing rod (31) is used for pressing the pressure sensor (32).

8. The graphene exfoliation apparatus of claim 7, wherein, The metering box (25) is fixedly installed with a guide funnel (33) below the adjusting plate (28), the bottom end of the guide funnel (33) extends into the heat preservation pipe (24), a rotating shaft (35) is rotatably connected in the guide funnel (33), a isolation cover plate (34) is hingedly connected at the bottom opening of the guide funnel (33), the isolation cover plate (34) is used for plugging the bottom opening of the guide funnel (33), so that the heat generated by the heating assembly can be isolated when the graphite oxide particles are stripped, a first connecting rod (36) is fixedly sleeved on the rotating shaft (35) and located in the guide funnel (33), one end of the first connecting rod (36) is rotatably connected with a second connecting rod (37), the bottom end of the second connecting rod (37) is rotatably connected with the top of the isolation cover plate (34), a protective cover (49) is fixedly installed on one side of the heat preservation pipe (24) and the metering box (25), one end of the connecting shaft (38) and one end of the rotating shaft (35) extend into the protective cover (49), synchronous wheels (39) are fixedly sleeved on the rotating shaft (35) and the connecting shaft (38) and located in the protective cover (49), and a synchronous belt (40) is drivingly sleeved on the two synchronous wheels (39).

9. The graphene exfoliation apparatus of claim 8, wherein, The heating assembly comprises a heating furnace (43) located in the heat preservation pipe (24), a bottom cover (42) is fixedly installed below the heat preservation pipe (24) at the bottom of the heating furnace (43), the bottom cover (42) is tightly clamped with the bottom opening of the heat preservation pipe (24), the bottom cover (42) is slidingly connected with the plurality of installation rods (23), a bottom heating box (44) is fixedly installed on the inner wall at the bottom of the heating furnace (43), an electric heating ring (45) is fixedly installed in the bottom heating box (44), a heat exchange plate (46) is fixedly installed on the top of the bottom heating box (44), an electric heating cage (47) and a sealing ring (48) are also fixedly installed on the heating furnace (43), the sealing ring (48) is used for protecting the electric heating cage (47), a second electric push rod (41) is fixedly installed on the inner wall at the bottom of the bottom frame (22), the output shaft of the second electric push rod (41) extends above the bottom frame (22) and is fixedly connected with the bottom of the bottom cover (42).

10. The graphene exfoliation apparatus of claim 9, wherein, A plurality of temperature sensors (50) are installed at the internal partition of the heating furnace (43) at equal intervals, the heating assembly further comprises a processor, the processor is electrically connected with the stepping motor (27), the dilute phase conveying pump (20), the plurality of pressure sensors (32), the second electric push rod (41) and the plurality of temperature sensors (50).

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