Equipment and method for producing graphene

Abstract

The invention relates to the technical field of non-metallic material preparation, in particular to graphene production equipment and method.The graphene production equipment comprises a preparation tank, a top cover is installed above the preparation tank, a rotating shaft is rotationally connected to a top plate of the top cover, a reserved groove is formed in the bottom face of the rotating shaft, an air leakage pipe head is inserted into the reserved groove, and the air leakage pipe head is inserted into the surface of a bracket; a mounting cylinder is fixed on the bottom surface of the bracket and penetrates through a bottom plate of the preparation tank; the device has the beneficial effects that the device is compact and reasonable in structure, all parts are tightly connected, and the stability and durability of the device are ensured. The components such as the spiral plate, the stirring plate, the mounting cylinder and the bracket not only realize stirring of graphite raw materials and injection of gas, but also serve as a gas conveying channel and a limiting structure, so that multiple purposes are realized, the equipment structure is simplified, and the production cost is reduced. The design of the lifting ring not only achieves scraping and cleaning of the inner wall of the preparation tank, but also serves as a clear water conveying channel.

Description

Technical Field

[0001] The invention relates to the technical field of non-metallic material preparation, and in particular to a device and a method for producing graphene. Background Art

[0002] As a new material with excellent electrical, thermal and mechanical properties, graphene has shown great application potential in many fields. However, the production process of graphene is complex and costly. How to efficiently and stably produce high-quality graphene products is one of the current research hotspots.

[0003] Traditional graphene production equipment and methods have many shortcomings, such as complex equipment structure, low production efficiency, high energy consumption, low raw material utilization rate and difficult equipment maintenance. In particular, during the raw material stirring and gas injection process, it is difficult to achieve uniform mixing of raw materials and effective injection of gas, resulting in unstable quality and output of graphene products. In addition, the equipment also has many inconveniences in cleaning and maintenance, which increases production costs and time costs.

[0004] In order to solve the above problems, the present invention proposes a new device for producing graphene and a method for using the same, aiming to achieve efficient and stable production of graphene by optimizing the device structure and operating procedures, while reducing production costs and maintenance difficulties. Summary of the invention

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

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a device for producing graphene, comprising a preparation tank, a top cover is installed above the preparation tank, a rotating shaft is rotatably connected to the top plate of the top cover, a reserved groove is opened on the bottom surface of the rotating shaft, a vent pipe head is plugged into the inside of the reserved groove, the vent pipe head is plugged into the surface of a bracket, a mounting cylinder is fixed to the bottom surface of the bracket, the mounting cylinder passes through the bottom plate of the preparation tank, a gas transmission connecting pipe is plugged and fixed to the bottom end of the mounting cylinder, a mounting sleeve is provided at the bottom end of the rotating shaft, a spiral plate and a stirring plate are fixed on the tube body of the mounting sleeve, an airway and an air hole are provided on the surface of the spiral plate, and the airway is connected to the reserved groove;

[0007] A lifting ring is provided inside the preparation tank, a rubber scraper is fixed on the top surface of the lifting ring, and two long screws are fixed on the top surface of the lifting ring. The top ends of the long screws penetrate the top plate of the top cover, and an injection hole is provided on the surface of one long screw. A hopper is installed on the top surface of the top cover, a protective frame is fixed on the inner ring surface of the hopper, clean water is filled between the protective frame and the hopper, a water pump is fixed on the top surface of the top cover, and the water pump draws clean water into the injection hole. A water collecting chamber is provided inside the lifting ring, and a seepage hole is provided on the surface of the water collecting chamber. The injection hole introduces clean water into the water collecting chamber and then the clean water flows out through the seepage hole.

[0008] Preferably, a plurality of brackets are fixed to the bottom surface of the preparation tank, a discharge valve tube is plugged and fixed to the bottom surface of the preparation tank, a plurality of screws are fixed to the bottom surface of the top cover, a plurality of bolt holes are opened on the top surface of the preparation tank, after the top cover is overlapped on the preparation tank, screws are plugged into the bolt holes, and a nut is threadedly mounted on the bottom end of the screws.

[0009] Preferably, a servo motor group is fixed on the top surface of the preparation tank, and the driving shaft of the servo motor group passes through the top surface of the top cover. The driving shaft of the servo motor group is connected to the rotating shaft through a coupling, and a sealed bearing 1 is fixed inside the reserved groove, and the air vent pipe head is inserted into the inner ring of the sealed bearing 1. The bracket is a circular frame structure, and a sealed bearing 2 is fixed inside the bracket, and the inner ring of the sealed bearing 2 is sleeved on the bottom end of the rotating shaft.

[0010] Preferably, the mounting cylinder is of a cylindrical structure, the bottom end of the mounting cylinder is below the preparation tank, a plurality of gas connection pipes are plugged and fixed on the surface of the mounting cylinder, and a circulating air pipe is plugged and fixed on the surface of the mounting cylinder, the top end of the circulating air pipe is plugged into the top end of the preparation tank, a control valve is installed on the tube body of the circulating air pipe, a heating pipe is fixed at the bottom end of the mounting cylinder, the heating pipe extends into the mounting cylinder, and a wind hood is fixed on the inner wall of the mounting cylinder, and the wind hood is an inverted conical ring plate.

[0011] Preferably, rubber rings are fixed to the inner ring surfaces at both ends of the mounting sleeve, the rubber rings are clamped between the mounting sleeve and the rotating shaft, connecting screws are threaded on both ends of the mounting sleeve, the connecting screws pass through the mounting sleeve and are threaded on the surface of the rotating shaft, the spiral plate is located below the stirring plate, the stirring plate is a "T"-shaped plate structure, two stirring plates are provided, and the two stirring plates are symmetrically distributed about the rotating shaft.

[0012] Preferably, a through hole 1 is provided on the surface of the mounting sleeve, a through hole 2 is provided on the surface of the rotating shaft, the through hole 2 is connected to the reserved groove, the through hole 1 corresponds to the through hole 2, a rubber plug ring is fixed on the inner ring surface of the mounting sleeve, the rubber plug ring is in the form of a truncated cone ring plate, the rubber plug ring is inserted into the through hole 2, the through hole 1 is connected to the airway, a connecting ring is fixed inside the reserved groove, a pressurized air pump is fixed on the top surface of the connecting ring, the airway is in the form of a "T" shaped channel, and a plurality of air holes are provided on the surface of the airway.

[0013] Preferably, the lifting ring is a circular ring plate with an "L"-shaped cross-section, bristles are fixed to the outer ring surface of the bottom end of the lifting ring, and the top surface of the lifting ring is provided with an inclined surface, which slopes downward from the outer ring to the inner ring of the top surface of the lifting ring, and the rubber scraper is a circular ring plate with a right-angled triangle cross-section, and the outer diameter of the rubber scraper is equal to the inner diameter of the preparation tank.

[0014] Preferably, a pad is sleeved and fixed on the rod body of the long screw, and the pad is a circular ring plate with a "concave"-shaped cross-section. A rubber pad is fixed in the groove body of the pad, and the rubber pad is a ring-shaped plate. The thickness of the rubber pad is greater than the height of the groove body of the pad. The top end of the long screw is sleeved and threaded with nut No. 2. After nut No. 2 and the long screw are screwed and locked, the rubber pad is clamped between the pad and the top plate of the top cover to produce elastic deformation.

[0015] Preferably, the enclosure frame is a circular tube with an "L"-shaped cross-section, a water inlet is provided on the top surface of the enclosure frame, a hopper cover is threadedly mounted on the top end of the hopper, a suction pipe of the water pump is plugged and fixed on the surface of the hopper, a connecting swivel is fixedly mounted on the drainage hose of the water pump, the connecting swivel is rotatably connected to the top end of the threaded sleeve, the threaded sleeve is threadedly connected to the top end of the long screw, a "convex" shaped circular ring plate is integrally formed at the bottom end of the connecting swivel, a "convex" shaped circular ring groove is provided on the top surface of the threaded sleeve, and the "convex" shaped circular plate is rotatably connected in the "convex" shaped circular groove.

[0016] A method for using a device for producing graphene, the method comprising the following steps:

[0017] Put the graphite raw material into the preparation tank, drive the spiral plate and the stirring plate to stir the graphite raw material through the rotating shaft, connect the pipelines for conveying helium, nitrogen and carbon dioxide gas respectively at multiple gas connection pipes, and install a metering pump on the pipeline;

[0018] During the mixing process, multiple gas connection pipes inject helium, nitrogen and carbon dioxide into the installation cylinder respectively. The three gases are mixed in the installation cylinder and then injected into the reserved groove through the vent pipe head. The mixed gas inside the reserved groove is introduced into the airway and then dispersed through the air holes and pressurized by a pressurized air pump, so that the mixed gas and the graphite raw material collide with each other.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] The equipment and method for producing graphene proposed in the present invention have a compact and reasonable equipment structure, and the various components are tightly connected to ensure the stability and durability of the equipment. The spiral plate, stirring plate, mounting cylinder, bracket and other components not only realize the stirring of graphite raw materials and the injection of gas, but also serve as gas delivery channels and limit structures, realizing "one object for multiple uses", simplifying the equipment structure and reducing production costs. The design of the lifting ring not only realizes the scraping and cleaning of the inner wall of the preparation tank, but also serves as a clean water delivery channel, further improving the versatility and practicality of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the structure of the present invention;

[0022] Figure 2 It is a top view of the structure of the present invention;

[0023] Figure 3 for Figure 2 Structural cross-section view at AA in the middle;

[0024] Figure 4 for Figure 3 A schematic diagram of the structure enlargement in the middle;

[0025] Figure 5 for Figure 3 A magnified schematic diagram of the structure at B in the middle;

[0026] Figure 6 for Figure 3 A magnified schematic diagram of the structure at C in the middle;

[0027] Figure 7 for Figure 3 A magnified schematic diagram of the structure at D in the middle;

[0028] Figure 8 for Figure 3 The enlarged schematic diagram of the structure at E in the middle;

[0029] Fig. 9 for Figure 4 A magnified schematic diagram of the structure at F in the middle;

[0030] Fig.10 This is a schematic diagram of the top cover structure of the present invention;

[0031] Fig.11 This is a schematic diagram of the connection structure between the lifting ring and the long screw of the present invention;

[0032] Fig.12 This is a schematic diagram of the connection structure between the installation cylinder and the circulating air pipe of the present invention;

[0033] Fig.13 This is a schematic diagram of the connection structure between the mounting sleeve and the stirring plate of the present invention.

[0034] In the figure: preparation tank 1, top cover 2, screw rod 1 3, bolt hole 4, nut 1 5, servo motor group 6, rotating shaft 7, reserved groove 8, sealed bearing 1 9, air release pipe head 10, bracket 11, sealed bearing 2 12, installation cylinder 13, gas transmission connecting pipe 14, wind cover 15, heating pipe 16, circulating air pipe 17, control valve 18, installation sleeve 19, rubber ring 20, connecting screw rod 21, connecting ring 22, pressurized air pump 23, spiral plate 24, stirring plate 25, air duct 26, air hole 27, perforation one 28, perforation two 29, rubber plug ring 30, discharge valve tube 31, bracket 32, hopper 33, hopper cover 34, protective frame 35, water injection port 36, lifting ring 37, water collecting chamber 38, water seepage hole 39, bristles 40, rubber scraper 41, long screw 42, pad 43, rubber pad 44, nut two 45, injection hole 46, water pump 47, connecting swivel 48, screw sleeve 49, air supplement hole 50. DETAILED DESCRIPTION

[0035] In order to make the purpose and technical solution of the present invention clearly and completely described, and the advantages more clearly understood, the embodiments of the present invention are further described in detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are part of the embodiments of the present invention, rather than all of the embodiments, and are only used to explain the embodiments of the present invention, and are not used to limit 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.

[0036] For example, see Figures 1 to 13 The present invention provides a technical solution: a device for producing graphene, comprising a preparation tank 1, a top cover 2 is installed above the preparation tank 1, a plurality of brackets 32 are fixed to the bottom surface of the preparation tank 1, a discharge valve tube 31 is plugged and fixed to the bottom surface of the preparation tank 1, a plurality of screws 3 are fixed to the bottom surface of the top cover 2, a plurality of bolt holes 4 are provided on the top surface of the preparation tank 1, after the top cover 2 is overlapped on the preparation tank 1, the screws 3 are plugged into the bolt holes 4, and the bottom ends of the screws 3 are sleeved with nuts 5 that are threaded; a rotating shaft 7 is rotatably connected to the top plate of the top cover 2, a reserved groove 8 is provided on the bottom surface of the rotating shaft 7, and a screw nut 5 is plugged into the inside of the reserved groove 8; The vent pipe head 10 is inserted into the surface of the bracket 11, and a mounting tube 13 is fixed to the bottom surface of the bracket 11, and the mounting tube 13 passes through the bottom plate of the preparation tank 1, and a servo motor group 6 is fixed to the top surface of the preparation tank 1, and the driving shaft of the servo motor group 6 passes through the top surface of the top cover 2, and the driving shaft of the servo motor group 6 is connected to the rotating shaft 7 through a coupling, and a sealed bearing 9 is fixed inside the reserved groove 8, and the vent pipe head 10 is inserted into the inner ring of the sealed bearing 9, and the bracket 11 is a circular frame structure, and a sealed bearing 12 is fixed inside the bracket 11, and the inner ring of the sealed bearing 12 is sleeved on the bottom end of the rotating shaft 7.

[0037] When in use, after the top cover 2 is overlapped on the preparation tank 1, the screw 3 is inserted into the corresponding bolt hole 4, and then the nut 5 is sleeved and screwed on the bottom end of the bolt hole 4 to complete the connection between the preparation tank 1 and the top cover 2; and at this time, the bottom end of the rotating shaft 7 is inserted into the inner ring of the sealing bearing 12, and the air venting pipe head 10 is inserted into the inner ring of the sealing bearing 9. When the rotating shaft 7 rotates, the bracket 11 cooperates with the sealing bearing 12 and the sealing bearing 9 to achieve anti-bias limiting of the rotating shaft 7, and meets the gas injected into the installation cylinder 13 to be transported to the reserved groove 8, that is, the bracket 11 and the installation cylinder 13 not only achieve the limitation of the shaft body, but also serve as a gas delivery channel, that is, one thing has two uses.

[0038] A gas transmission connecting pipe 14 is plugged and fixed to the bottom end of the mounting cylinder 13, a mounting sleeve 19 is sleeved on the bottom end of the rotating shaft 7, a spiral plate 24 and a stirring plate 25 are fixed on the tube body of the mounting sleeve 19, the mounting cylinder 13 is a cylindrical structure, the bottom end of the mounting cylinder 13 is below the preparation tank 1, a plurality of gas transmission connecting pipes 14 are plugged and fixed on the surface of the mounting cylinder 13, and a circulating air pipe 17 is plugged and fixed on the surface of the mounting cylinder 13, the top of the circulating air pipe 17 is plugged into the top of the preparation tank 1, a control valve 18 is installed on the tube body of the circulating air pipe 17, a heating pipe 16 is fixed to the bottom end of the mounting cylinder 13, the heating pipe 16 extends into the mounting cylinder 13, and a wind hood 15 is fixed on the inner wall of the mounting cylinder 13, and the wind hood 15 is an inverted frustum ring plate; rubber rings 20 are fixed to the inner ring surfaces at both ends of the mounting sleeve 19, the rubber rings 20 are clamped between the mounting sleeve 19 and the rotating shaft 7, and connecting screws 21 are screwed on both ends of the mounting sleeve 19. The connecting screw 21 passes through the mounting sleeve 19 and is screwed to the surface of the rotating shaft 7. The spiral plate 24 is located below the stirring plate 25. The stirring plate 25 is in a "T"-shaped plate structure. There are two stirring plates 25, and the two stirring plates 25 are symmetrically distributed about the rotating shaft 7; the surface of the spiral plate 24 is provided with an airway 26 and an air hole 27, and the airway 26 is connected to the reserved groove 8; the surface of the mounting sleeve 19 is provided with a perforation 28, and the surface of the rotating shaft 7 is provided with a perforation 29, and the perforation 29 is connected to the reserved groove 8, and the perforation 28 and the perforation 29 correspond to each other. A rubber plug ring 30 is fixed to the inner ring surface of the mounting sleeve 19. The rubber plug ring 30 is a truncated cone ring plate, and the rubber plug ring 30 is inserted into the perforation 29, and the perforation 28 is connected to the airway 26. A connecting ring 22 is fixed inside the reserved groove 8, and a pressurized air pump 23 is fixed on the top surface of the connecting ring 22. The airway 26 is a "T"-shaped channel, and a plurality of air holes 27 are provided on the surface of the airway 26.

[0039] When in use, the plurality of spiral plates 24 are respectively used to connect the pipelines for conveying helium, nitrogen and carbon dioxide gases, and are equipped with a heating tube 16, which is used to heat and insulate the gas entering the installation cylinder 13 as needed. After the gas is injected into the installation cylinder 13, the gas hits the wind cover 15 when it climbs upward and then flows back briefly. The collision between the reflux gas and the climbing gas improves the mixing effect of the gas. After the mixed gas climbs to the exhaust pipe head 10 through the inner ring mouth of the wind cover 15, it is injected into the reserved groove 8 through the exhaust pipe head 10. After the pressurized air pump 23 introduces the mixed gas in the reserved groove 8, it increases upward and passes through the second perforation 29 and the first perforation 28. After being injected into the air channel 26, the high-pressure gas inside the air channel 26 is ejected through the air holes 27 to hit the graphite raw material, and the weight ratio of the mixed gas to the graphite is 1:0.7-1:2; the carbon dioxide content in the mixed gas is 50-80%, helium is 5-10%, and the rest is nitrogen; when the rotating shaft 7 is driven by the servo motor group 6 to drive the spiral plate 24 and the stirring plate 25 to stir the graphite raw material inside the preparation tank 1, the air holes 27 on the surface of the stirring plate 25 eject high-pressure gas to hit the graphite raw material, that is, during the stirring process, the pretreatment of graphene falling off from the graphite surface is simultaneously realized; in this way, the stirring plate 25 serves two purposes.

[0040] The preparation tank 1 is provided with a lifting ring 37 inside, a rubber scraper 41 is fixed to the top surface of the lifting ring 37, and two long screws 42 are fixed to the top surface of the lifting ring 37, and the top ends of the long screws 42 penetrate the top plate of the top cover 2, the lifting ring 37 is a circular ring plate with an "L"-shaped cross section, and a brush 40 is fixed to the outer ring surface of the bottom end of the lifting ring 37. The top surface of the lifting ring 37 is provided with an inclined surface, and the inclined surface is inclined downward from the outer ring to the inner ring of the top surface of the lifting ring 37. The rubber scraper 41 is a circular ring plate with a right triangle cross section, and the outer diameter of the rubber scraper 41 is equal to The inner diameter of the preparation tank 1 is adjusted. A pad 43 is fixedly mounted on the rod body of the long screw 42. The pad 43 is a circular plate with a concave cross section. A rubber pad 44 is fixed in the groove of the pad 43. The rubber pad 44 is a ring plate. The thickness of the rubber pad 44 is greater than the groove height of the pad 43. A nut 45 is threadedly mounted on the top of the long screw 42. After the nut 45 and the long screw 42 are threadedly locked, the rubber pad 44 is clamped between the pad 43 and the top plate of the top cover 2 to produce elastic deformation. The surface of the long screw 42 is provided with an injection A liquid hole 46 is provided on the top surface of the top cover 2, a hopper 33 is installed on the inner ring surface of the hopper 33, a surrounding frame 35 is fixed, clean water is filled between the surrounding frame 35 and the hopper 33, a water pump 47 is fixed on the top surface of the top cover 2, the water pump 47 sucks clean water and injects it into the liquid injection hole 46, a water collecting chamber 38 is provided inside the lifting ring 37, a water seepage hole 39 is provided on the surface of the water collecting chamber 38, and the liquid injection hole 46 introduces clean water into the water collecting chamber 38 and then flows out through the water seepage hole 39; the surrounding frame 35 is a round tube with an "L"-shaped cross section, and the top surface of the surrounding frame 35 is provided with a water collecting chamber 38. There is a water injection port 36, the top of the hopper 33 is sleeved with a hopper cover 34 screwed, the suction pipe of the water pump 47 is plugged and fixed on the surface of the hopper 33, and the drainage hose of the water pump 47 is sleeved with a connecting swivel 48, the connecting swivel 48 is rotatably connected to the top of the screw sleeve 49, the screw sleeve 49 is sleeved and screwed on the top of the long screw 42, and the bottom end of the connecting swivel 48 is integrally formed with a "convex" shaped circular ring plate, and the top surface of the screw sleeve 49 is provided with a "convex" shaped circular ring groove, and the "convex" shaped circular plate is rotatably connected in the "convex" shaped circular groove.

[0041] When in use, the lifting ring 37 is an optional structure, which is used to pull the lifting ring 37 up along the preparation tank 1 through the long screw 42 during the process of removing the top cover 2 from the preparation tank 1 and lifting it up, and the rubber scraper 41 above the lifting ring 37 scrapes off the residual raw materials on the inner wall of the preparation tank 1, and the bristles 40 clean the remaining debris; in order to improve the cleaning effect of the lifting ring 37 on the inner wall of the preparation tank 1, the top cover 2 can be pulled upward until the lifting ring 37 reaches the top of the preparation tank 1, and the top cover 2 is pushed down and falls back to the top of the preparation tank 1, so that the lifting ring 37 carries the rubber scraper 41 and the bristles 40 to reciprocate and clean the inner wall of the preparation tank 1, ensuring that the raw materials adhered to the inner wall of the preparation tank 1 are swept off, and the swept raw materials are discharged through the discharge valve pipe 31; in order to improve the cleaning effect, Trigger the switch of the water pump 47, and the water pump 47 sucks the clean water between the hopper 33 and the protective frame 35 into the injection hole 46. The injection hole 46 introduces the clean water into the water collecting chamber 38 and then flows out through the seepage hole 39. The outflowing clean water falls along the inner wall of the preparation tank 1 to wash away the residual debris; the water injection port 36 is used to replenish water between the hopper 33 and the protective frame 35, and the air replenishment hole 50 is used to replenish the air pressure between the hopper 33 and the protective frame 35. The air replenishment hole 50 is opened on the top plate of the hopper cover 34 to ensure that the clean water can be pumped away by the water pump 47; the long screw 42 cooperates with the lifting ring 37 not only to scrape the inner wall of the preparation tank 1, but also to realize the water delivery function, and the delivered clean water is flushed from the inner wall of the preparation tank 1, so that the long screw 42 cooperates with the lifting ring 37 to achieve multiple uses.

[0042] Embodiment 2, based on embodiment 1, proposes a method for using a device for producing graphene, the method comprising the following steps:

[0043] Equipment preparation and raw material placement: Place the equipment on a stable workbench and ensure that all connecting parts, such as screw rod 3 and nut 5, are securely fastened. Open the top cover 2 of the preparation tank 1 and place an appropriate amount of graphite raw material into the preparation tank 1. Close the top cover 2 and securely connect the top cover 2 to the preparation tank 1 through screw rod 3 and nut 5.

[0044] Connect gas pipelines and set parameters: Connect the pipelines for transporting helium, nitrogen and carbon dioxide gas to the multiple gas connection pipes 14 of the installation cylinder 13, and ensure that the pipelines are tightly connected without leakage. Install a metering pump on each gas pipeline to accurately control the flow rate and injection time of the gas. Set the speed of the servo motor group 6, the temperature of the heating tube 16 and other parameters according to the production process requirements.

[0045] Start stirring and gas injection: Start the servo motor group 6 to drive the rotating shaft 7 to rotate, and then drive the spiral plate 24 and the stirring plate 25 to stir the graphite raw material. At the same time, open the valve of the gas pipeline, and accurately control the injection amount of helium, nitrogen and carbon dioxide gas through the metering pump. After the gas is mixed in the installation cylinder 13, it is injected into the reserved groove 8 through the vent pipe head 10, and then dispersed through the air channel 26 to collide with the graphite raw material.

[0046] Pressurization and collision treatment: Start the pressurized air pump 23 to pressurize the mixed gas in the reserved groove 8, so that it can be dispersed through the air holes 27 at a higher speed to enhance the collision effect with the graphite raw material. During the collision process, the active components in the mixed gas react with the graphite raw material to promote the formation of graphene.

[0047] Stirring and cleaning: During the stirring process, the speed and stirring time of the servo motor group 6 can be adjusted as needed to achieve the best stirring effect. When the stirring is completed, close the valves of the servo motor group 6 and the gas pipeline. Open the unloading valve tube 31 to unload the graphene product in the preparation tank 1. At the same time, start the water pump 47, inject clean water into the water collecting chamber 38 of the lifting ring 37, and flow out through the seepage hole 39 to clean the inner wall of the preparation tank 1. During the upward movement of the top cover 2, the lifting ring 37 scrapes and cleans the inner wall of the preparation tank 1 through the rubber scraper 41 and the bristles 40 to ensure that there is no residual raw material.

[0048] Equipment maintenance and care: During use, the operating procedures should be strictly followed to ensure personnel safety. Regularly check the integrity of the equipment's connecting parts, such as the screw 3, nut 5, etc., gas pipelines, metering pumps and other key components to ensure their normal operation. Lubricate and maintain the lubricating parts of the equipment, such as the rubber ring 20 between the rotating shaft 7 and the mounting sleeve 19, to extend the service life of the equipment.

[0049] 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 device for producing graphene, comprising a preparation tank (1), characterized in that: A top cover (2) is installed above the preparation tank (1), a rotating shaft (7) is rotatably connected to the top plate of the top cover (2), a reserved groove (8) is provided on the bottom surface of the rotating shaft (7), a venting pipe head (10) is inserted into the inside of the reserved groove (8), the venting pipe head (10) is inserted into the surface of the bracket (11), a mounting tube (13) is fixed to the bottom surface of the bracket (11), the mounting tube (13) passes through the bottom plate of the preparation tank (1), a gas transmission connecting pipe (14) is inserted and fixed to the bottom end of the mounting tube (13), a mounting sleeve (19) is sleeved on the bottom end of the rotating shaft (7), a spiral plate (24) and a stirring plate (25) are fixed on the tube body of the mounting sleeve (19), an air passage (26) and an air hole (27) are provided on the surface of the spiral plate (24), and the air passage (26) is connected to the reserved groove (8); A lifting ring (37) is provided inside the preparation tank (1), a rubber scraper (41) is fixed to the top surface of the lifting ring (37), and two long screws (42) are fixed to the top surface of the lifting ring (37), the top ends of the long screws (42) penetrate the top plate of the top cover (2), and a liquid injection hole (46) is opened on the surface of one of the long screws (42), a hopper (33) is installed on the top surface of the top cover (2), and a rubber scraper (41) is fixed to the inner ring surface of the hopper (33). A protective frame (35) is provided, and clean water is filled between the protective frame (35) and the hopper (33). A water pump (47) is fixed on the top surface of the top cover (2). The water pump (47) sucks clean water and injects it into the injection hole (46). A water collecting chamber (38) is provided inside the lifting ring (37). A water seepage hole (39) is provided on the surface of the water collecting chamber (38). The injection hole (46) introduces clean water into the water collecting chamber (38) and the clean water flows out through the water seepage hole (39).

2. The device for producing graphene according to claim 1, characterized in that: A plurality of brackets (32) are fixed to the bottom surface of the preparation tank (1), a discharge valve tube (31) is inserted and fixed to the bottom surface of the preparation tank (1), a plurality of screw rods (3) are fixed to the bottom surface of the top cover (2), a plurality of bolt holes (4) are provided on the top surface of the preparation tank (1), after the top cover (2) is overlapped on the preparation tank (1), the screw rods (3) are inserted into the bolt holes (4), and a nut (5) is threadedly sleeved on the bottom end of the screw rods (3).

3. The device for producing graphene according to claim 1, characterized in that: A servo motor group (6) is fixed on the top surface of the preparation tank (1), and the driving shaft of the servo motor group (6) passes through the top surface of the top cover (2). The driving shaft of the servo motor group (6) is connected to the rotating shaft (7) through a coupling. A sealed bearing (9) is fixed inside the reserved groove (8), and the vent pipe head (10) is inserted into the inner ring of the sealed bearing (9). The bracket (11) is a circular frame structure, and a sealed bearing (12) is fixed inside the bracket (11). The inner ring of the sealed bearing (12) is sleeved on the bottom end of the rotating shaft (7).

4. The device for producing graphene according to claim 1, characterized in that: The installation cylinder (13) is in a cylindrical structure. The bottom end of the installation cylinder (13) is located below the preparation tank (1). A plurality of gas transmission connecting pipes (14) are plugged and fixed on the surface of the installation cylinder (13). A circulating air pipe (17) is plugged and fixed on the surface of the installation cylinder (13). The top end of the circulating air pipe (17) is plugged into the top end of the preparation tank (1). A control valve (18) is installed on the pipe body of the circulating air pipe (17). A heating pipe (16) is fixed at the bottom end of the installation cylinder (13). The heating pipe (16) extends into the installation cylinder (13). A wind hood (15) is fixed on the inner wall of the installation cylinder (13). The wind hood (15) is in the form of an inverted truncated cone ring plate.

5. The device for producing graphene according to claim 1, characterized in that: Rubber rings (20) are fixed to the inner ring surfaces at both ends of the mounting sleeve (19), the rubber rings (20) are clamped between the mounting sleeve (19) and the rotating shaft (7), connecting screws (21) are screwed to both ends of the mounting sleeve (19), the connecting screws (21) penetrate the mounting sleeve (19) and are screwed to the surface of the rotating shaft (7), the spiral plate (24) is located below the stirring plate (25), the stirring plate (25) is a "T"-shaped plate structure, two stirring plates (25) are provided, and the two stirring plates (25) are symmetrically distributed about the rotating shaft (7).

6. The device for producing graphene according to claim 1, characterized in that: The surface of the installation sleeve (19) is provided with a first through hole (28), the surface of the rotating shaft (7) is provided with a second through hole (29), the second through hole (29) is connected to the reserved groove (8), the first through hole (28) and the second through hole (29) correspond to each other, a rubber plug ring (30) is fixed on the inner ring surface of the installation sleeve (19), the rubber plug ring (30) is in the form of a truncated cone ring plate, the rubber plug ring (30) is inserted into the second through hole (29), the first through hole (28) is connected to the airway (26), a connecting ring (22) is fixed inside the reserved groove (8), a pressurized air pump (23) is fixed on the top surface of the connecting ring (22), the airway (26) is in the form of a "T"-shaped channel, and a plurality of air holes (27) are provided on the surface of the airway (26).

7. The device for producing graphene according to claim 1, characterized in that: The lifting ring (37) is an annular plate with an "L"-shaped cross section. Bristles (40) are fixed to the outer ring surface of the bottom end of the lifting ring (37). The top surface of the lifting ring (37) is provided with an inclined surface, which slopes downward from the outer ring to the inner ring of the top surface of the lifting ring (37). The rubber scraper (41) is an annular plate with a right-angled triangle cross section. The outer diameter of the rubber scraper (41) is equal to the inner diameter of the preparation tank (1).

8. The device for producing graphene according to claim 1, characterized in that: A backing plate (43) is sleeved and fixed on the rod body of the long screw rod (42), the backing plate (43) is a circular ring plate with a "concave"-shaped cross section, a rubber pad (44) is fixed in the groove body of the backing plate (43), the rubber pad (44) is a ring plate, the thickness of the rubber pad (44) is greater than the height of the groove body of the backing plate (43), and a second nut (45) is sleeved and screwed on the top end of the long screw rod (42). After the second nut (45) and the long screw rod (42) are screwed and locked, the rubber pad (44) is clamped between the backing plate (43) and the top plate of the top cover (2) to generate elastic deformation.

9. The device for producing graphene according to claim 1, characterized in that: The enclosure frame (35) is a circular tube with an L-shaped cross section. A water injection port (36) is provided on the top surface of the enclosure frame (35). A hopper cover (34) is sleeved and screwed on the top of the hopper (33). A suction pipe of a water pump (47) is plugged and fixed on the surface of the hopper (33). A connecting swivel (48) is sleeved and fixed on the drainage hose of the water pump (47). The connecting swivel (48) is rotatably connected to the top of a screw sleeve (49). The screw sleeve (49) is sleeved and screwed on the top of the long screw (42). A convex-shaped circular ring plate is integrally formed at the bottom end of the connecting swivel (48). A convex-shaped circular ring groove is provided on the top surface of the screw sleeve (49). The convex-shaped circular plate is rotatably connected in the convex-shaped circular groove.

10. A method for using a graphene production device according to any one of claims 1 to 9, characterized in that: The method comprises the following steps: Putting graphite raw materials into a preparation tank (1), driving a spiral plate (24) and a stirring plate (25) via a rotating shaft (7) to stir the graphite raw materials, connecting pipelines for conveying helium, nitrogen and carbon dioxide gases to a plurality of gas connection pipes (14), respectively, and installing a metering pump on the pipeline; During the stirring process, a plurality of gas supply connecting pipes (14) respectively inject helium, nitrogen and carbon dioxide into the installation cylinder (13). The three gases are mixed in the installation cylinder (13) and then injected into the reserved groove (8) through the gas release pipe head (10). The mixed gas inside the reserved groove (8) is introduced into the air channel (26) and then dispersed through the air hole (27). The mixed gas is pressurized by the pressure pump (23), so that the mixed gas and the graphite raw material collide with each other.

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