Graphene preparation arc furnace

Abstract

The utility model relates to electric arc furnace technical field discloses a kind of electric arc furnaces for graphene preparation, including electric arc furnace body, the bottom of electric arc furnace body is fixedly connected with backing plate, the bottom of backing plate is fixedly connected with support seat, the top of electric arc furnace body is provided with heat insulation protection cylinder, and the inside of heat insulation protection cylinder is left with cavity.The utility model has following advantages and effects: electric arc furnace body uses arc method to prepare graphene, electric arc furnace body is small in size, convenient to use, air enters cavity, thereby following connecting pipe enters airflow guide pipe, the inside of cavity is positive pressure, thereby under the action of pressure, airflow blows out from the top of airflow guide pipe, the number of airflow guide pipe is more, airflow blows out with appropriate pressure upward, thereby guiding the hot air in the middle of heat insulation protection cylinder to flow upward, the cooling of hot air is accelerated, the heat dissipation of furnace mouth is facilitated, the overall protectiveness is improved, and it is convenient for staff to take material.

Description

Technical Field

[0001] This utility model relates to the field of electric arc furnace technology, and in particular to an electric arc furnace for graphene preparation. Background Technology

[0002] Graphene is a honeycomb-shaped planar film formed by carbon atoms in an sp2 hybridization manner. It is a quasi-two-dimensional material with a thickness of only one atomic layer, hence it is also called monolayer graphite. Due to its excellent strength, flexibility, electrical conductivity, thermal conductivity, and optical properties, the electric arc method is a green and pollution-free method that produces graphene with advantages such as high quality, high electron mobility, and high purity. The method of preparing nano-graphene by electric arc method uses cathode graphite rods as the two electrodes of an electric arc furnace. Under high current and a certain proportion of mixed atmosphere, continuous discharge occurs. During the discharge process, the anode and cathode graphite rods are continuously consumed, and nano-graphene can be obtained in the reaction chamber wall region.

[0003] In the prior art, Chinese Patent Publication No. CN207192796U discloses a graphene production equipment, including at least two graphene production devices. Each graphene production device includes a workbench with an electric arc furnace on its surface. The bottom of the electric arc furnace has a discharge port, and a cathode support rod and an anode support rod are also mounted on the bottom wall of the electric arc furnace. An anode made of graphite is attached to the end of the anode support rod. A receiving tube communicating with the inner cavity of the electric arc furnace is located on the right side of the furnace. A cathode graphene rod with a length of 70 cm to 150 cm and a diameter of 1 cm to 3 cm is placed inside the receiving tube. The cathode graphene rod can move towards the electric arc furnace under the drive of a pushing device and connect to the cathode support rod. The pushing device includes a drive motor, a threaded rod connected to the output shaft of the drive motor, and a push rod threadedly connected to the threaded rod. The graphene production equipment also includes a control device. This invention provides a graphene production equipment with a high degree of automation and high production efficiency.

[0004] However, in actual use, when the electric arc furnace is opened after processing, the temperature at the furnace opening is high, and the hot air inside the electric arc furnace can easily rush out, resulting in weak overall protection. When workers are close to the furnace opening, there is a certain degree of danger, so improvements are needed. Utility Model Content

[0005] The purpose of this invention is to provide an electric arc furnace for graphene preparation, which has the effects of accelerating the cooling of hot gas, facilitating heat dissipation at the furnace opening, and improving overall protection.

[0006] The above-mentioned technical objective of this utility model is achieved through the following technical solution: an electric arc furnace for graphene preparation, comprising an electric arc furnace body, a pad fixedly connected to the bottom of the electric arc furnace body, a support fixedly connected to the bottom of the pad, a heat insulation protective cylinder provided on the top of the electric arc furnace body, a cavity left inside the heat insulation protective cylinder, an airflow guiding pipe fixedly connected to the inner wall of the heat insulation protective cylinder, a connecting pipe fixedly connected to the bottom of the airflow guiding pipe, a wind box fixedly connected to the outer surface of the heat insulation protective cylinder, a fan fixedly connected to the inner wall of the wind box, an air outlet pipe fixedly connected to one end of the fan, and the air outlet pipe extending into the cavity.

[0007] By adopting the above technical solution, the electric arc furnace body uses the electric arc method to prepare graphene. The electric arc furnace body is small in size and easy to use. After processing, the heat insulation protective cylinder automatically descends to the furnace opening. When the electric arc furnace body is opened, the heat insulation protective cylinder can reduce the hot air rushing outward. At the same time, with the fan started, the air outlet pipe blows air into the cavity, and then enters the airflow guide pipe through the connecting pipe. The cavity is under positive pressure, and under the action of pressure, the airflow blows upward from the top of the airflow guide pipe. There are many airflow guide pipes, and the airflow blows upward with appropriate pressure, thereby guiding the hot air in the middle of the heat insulation protective cylinder to flow upward, accelerating the cooling of the hot air, facilitating heat dissipation at the furnace opening, improving the overall protection, and making it easier for workers to handle materials.

[0008] A further feature of this invention is that an air inlet pipe is fixedly connected to the other end of the fan, and the air inlet pipe extends to the outer surface of the air box.

[0009] By adopting the above technical solution, after the fan is started, the air inlet pipe draws in external air.

[0010] A further feature of this invention is that a first cylinder is fixedly connected to the top of the pad, and a first telescopic rod is fixedly connected to the output end of the first cylinder.

[0011] By adopting the above technical solution, when the first cylinder is started, it can drive the first telescopic rod to extend and retract up and down.

[0012] A further feature of this invention is that a connecting plate is fixedly connected to the top of the first telescopic rod, and a furnace cover is fixedly connected to one end of the connecting plate.

[0013] By adopting the above technical solution, the connecting plate moves up and down, driving the furnace cover to open and close automatically.

[0014] A further feature of this invention is that a connecting frame is movably mounted on the top of the support base, and a second cylinder is fixedly connected to the top of the connecting frame.

[0015] By adopting the above technical solution, the connecting frame can be removed from the support base, and the second cylinder can be activated when the heat insulation protective cylinder is adjusted.

[0016] A further feature of this invention is that a second telescopic rod is fixedly connected to the output end of the second cylinder, and an adjusting rod is fixedly connected to the top of the second telescopic rod.

[0017] By adopting the above technical solution, the second telescopic rod extends and retracts, thereby adjusting the height of the adjusting rod.

[0018] A further feature of this invention is that one end of the adjusting rod is fixedly connected to the heat insulation protective cylinder, and an mounting plate is fixedly connected to the bottom of the connecting frame.

[0019] By adopting the above technical solution, the height of the heat insulation protective cylinder can be flexibly adjusted, making it convenient to use.

[0020] A further feature of this invention is that the mounting plate is internally threaded with bolts, and the number of bolts is two.

[0021] By adopting the above technical solution, the mounting plate is fixed with bolts, and the fixing method is simple.

[0022] A further feature of this invention is that a control box is fixedly connected to the bottom of the support base, and a support leg is fixedly connected to the bottom of the control box.

[0023] By adopting the above technical solution, the control box controls the operation of the electric arc furnace body, and the support legs provide support at the bottom.

[0024] A further feature of this invention is that the number of airflow guiding pipes is eight, and the eight airflow guiding pipes are arranged in a ring array on the inner wall of the heat insulation protective cylinder.

[0025] By adopting the above technical solution, the bottom of the airflow guide tube is in a closed state, and the airflow can only be blown out from the top.

[0026] The beneficial effects of this utility model are:

[0027] 1. This utility model, through the coordinated arrangement of the electric arc furnace body, pad, support base, heat insulation protective cylinder, cavity, airflow guide pipe, connecting pipe, wind box, fan, and air outlet pipe, enables the device to produce graphene using the electric arc method during operation. The electric arc furnace body is small in size and easy to use. After processing, the heat insulation protective cylinder automatically descends to the furnace opening. When the electric arc furnace body is opened, the heat insulation protective cylinder reduces the outward escape of hot air. At the same time, with the fan started, the air outlet pipe blows air into the cavity, which then flows into the airflow guide pipe through the connecting pipe. The cavity is under positive pressure, and under this pressure, the airflow blows upward from the top of the airflow guide pipe. With multiple airflow guide pipes, the upward airflow carries appropriate pressure, guiding the hot air in the middle of the heat insulation protective cylinder upward, accelerating the cooling of the hot air, facilitating heat dissipation at the furnace opening, improving overall protection, and making it easier for workers to handle materials.

[0028] 2. This utility model, through the coordinated arrangement of the air inlet pipe, the first cylinder, the first telescopic rod, the connecting plate, the furnace cover, the connecting frame, the second cylinder, the second telescopic rod, the adjusting rod, the mounting plate, bolts, and the control box, enables the device to draw in external air after the fan is started. The first cylinder, when activated, drives the first telescopic rod to extend and retract vertically, causing the connecting plate to move up and down, thus automatically opening and closing the furnace cover. The connecting frame can be removed from the support base. When adjusting the heat insulation protective cylinder, the second cylinder is activated, causing the second telescopic rod to extend and retract, thereby adjusting the height of the adjusting rod. The height of the heat insulation protective cylinder can be flexibly adjusted, making it convenient to use. The mounting plate is fixed with bolts, a simple fixing method. The control box controls the operation of the electric arc furnace body. The support legs provide bottom support, and the bottom of the airflow guide pipe is closed, allowing airflow to only exit from the top. Attached Figure Description

[0029] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0030] Figure 1 This is a schematic diagram of the structure of this utility model;

[0031] Figure 2 This is a schematic diagram of the airflow guide tube structure of this utility model;

[0032] Figure 3 This utility model Figure 2 Enlarged structural diagram at point A;

[0033] Figure 4 This is a schematic diagram of the furnace cover structure of this utility model.

[0034] In the diagram, 1. Electric arc furnace body; 2. Pad plate; 3. Support base; 4. Heat insulation protective cylinder; 5. Cavity; 6. Airflow guide pipe; 7. Connecting pipe; 8. Air box; 9. Blower; 10. Air outlet pipe; 11. Air inlet pipe; 12. First cylinder; 13. First telescopic rod; 14. Connecting plate; 15. Furnace cover; 16. Connecting frame; 17. Second cylinder; 18. Second telescopic rod; 19. Adjusting rod; 20. Mounting plate; 21. Bolt; 22. Control box. Detailed Implementation

[0035] The technical solution of this utility model will now be clearly and completely described with reference to specific embodiments. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0036] Reference Figure 1-4An electric arc furnace for graphene preparation includes an electric arc furnace body 1. A pad 2 is fixedly connected to the bottom of the electric arc furnace body 1, and a support base 3 is fixedly connected to the bottom of the pad 2. A heat-insulating protective cylinder 4 is installed on the top of the electric arc furnace body 1. A cavity 5 is left inside the heat-insulating protective cylinder 4. An airflow guide pipe 6 is fixedly connected to the inner wall of the heat-insulating protective cylinder 4, and a connecting pipe 7 is fixedly connected to the bottom of the airflow guide pipe 6. A wind box 8 is fixedly connected to the outer surface of the heat-insulating protective cylinder 4, and a fan 9 is fixedly connected to the inner wall of the wind box 8. One end of the fan 9 is fixedly connected to an air outlet pipe 10, which extends into the cavity 5. When in use, the electric arc furnace body 1 prepares graphene using an electric arc method. The electric arc furnace body 1 is small in size and easy to use. After processing is completed, the heat-insulating protective cylinder... 4. Automatic descent to the furnace opening. When the electric arc furnace body 1 is opened, the heat insulation shield 4 reduces the outward escape of hot air. Simultaneously, with the start of the blower 9, the air outlet pipe 10 blows air into the cavity 5, which then flows through the connecting pipe 7 into the airflow guide pipe 6. The cavity 5 is under positive pressure, and under this pressure, the airflow blows upward from the top of the airflow guide pipe 6. Since there are multiple airflow guide pipes 6, the upward airflow carries appropriate pressure, guiding the hot air in the middle of the heat insulation shield 4 upward, accelerating the cooling of the hot air, facilitating heat dissipation at the furnace opening, improving overall protection, and making it easier for workers to handle materials. The other end of the blower 9 is fixedly connected to an air inlet pipe 11, which extends to the outer surface of the air box 8. After the blower 9 is started, the air inlet pipe 11 draws in external... A first cylinder 12 is fixedly connected to the top of the air cushion 2. A first telescopic rod 13 is fixedly connected to the output end of the first cylinder 12. When the first cylinder 12 is activated, it can drive the first telescopic rod 13 to extend and retract up and down. A connecting plate 14 is fixedly connected to the top of the first telescopic rod 13. A furnace cover 15 is fixedly connected to one end of the connecting plate 14. The connecting plate 14 moves up and down, driving the furnace cover 15 to open and close automatically. A connecting frame 16 is movably installed on the top of the support base 3. A second cylinder 17 is fixedly connected to the top of the connecting frame 16. The connecting frame 16 can be removed from the support base 3. When the heat insulation protective cylinder 4 is adjusted, the second cylinder 17 is activated. A second telescopic rod 18 is fixedly connected to the output end of the second cylinder 17. An adjusting rod 19 is fixedly connected to the top of the second telescopic rod 18. The rod 18 extends and retracts to adjust the height of the adjusting rod 19. One end of the adjusting rod 19 is fixedly connected to the heat insulation protective cylinder 4. The bottom of the connecting frame 16 is fixedly connected to the mounting plate 20. The height of the heat insulation protective cylinder 4 can be flexibly adjusted and is easy to use. The mounting plate 20 is internally threaded with two bolts 21. The mounting plate 20 is fixed by the bolts 21, and the fixing method is simple. The bottom of the support base 3 is fixedly connected to the control box 22. The bottom of the control box 22 is fixedly connected to the support leg. The control box 22 controls the operation of the electric arc furnace body 1. The support leg provides support at the bottom. There are eight airflow guide pipes 6. The eight airflow guide pipes 6 are arranged in a ring array on the inner wall of the heat insulation protective cylinder 4. The bottom of the airflow guide pipes 6 is closed, and the airflow can only be blown out from the top.

[0037] In this invention, the coordinated arrangement of the electric arc furnace body 1, pad 2, support base 3, heat insulation protective cylinder 4, cavity 5, airflow guide pipe 6, connecting pipe 7, wind box 8, fan 9, and air outlet pipe 10 enables the device to produce graphene using the electric arc method. The electric arc furnace body 1 is small in size and easy to use. After processing, the heat insulation protective cylinder 4 automatically descends to the furnace opening. When the electric arc furnace body 1 is opened, the heat insulation protective cylinder 4 reduces the outward escape of hot air. Simultaneously, with the fan 9 activated, the air outlet pipe 10 blows air into the cavity 5, which then flows through the connecting pipe 7 into the airflow guide pipe 6. The cavity 5 is under positive pressure, causing the airflow to blow upwards from the top of the airflow guide pipe 6. The numerous airflow guide pipes 6, with appropriate pressure, guide the hot air in the middle of the heat insulation protective cylinder 4 upwards, accelerating the cooling of the hot air, facilitating heat dissipation from the furnace opening, and improving overall heat protection. The device is designed for easy material handling and protection. Through the coordinated arrangement of the air inlet pipe 11, first cylinder 12, first telescopic rod 13, connecting plate 14, furnace cover 15, connecting frame 16, second cylinder 17, second telescopic rod 18, adjusting rod 19, mounting plate 20, bolts 21, and control box 22, the device allows the following functions: When the blower 9 is started, the air inlet pipe 11 draws in external air; the first cylinder 12 is activated, driving the first telescopic rod 13 to extend and retract vertically; the connecting plate 14 moves vertically, causing the furnace cover 15 to open and close automatically; the connecting frame 16 can be removed from the support base 3; when adjusting the heat insulation protective cylinder 4, the second cylinder 17 is activated, causing the second telescopic rod 18 to extend and retract, thereby adjusting the height of the adjusting rod 19. The height of the heat insulation protective cylinder 4 can be flexibly adjusted and is easy to use. The mounting plate 20 is fixed by bolts 21, a simple fixing method. The control box 22 controls the operation of the electric arc furnace body 1, which is supported at the bottom by the support legs. The bottom of the airflow guide pipe 6 is closed, allowing airflow to only exit from the top.

[0038] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An electric arc furnace for graphene preparation, comprising an electric arc furnace body (1), characterized in that: A pad (2) is fixedly connected to the bottom of the electric arc furnace body (1), and a support base (3) is fixedly connected to the bottom of the pad (2). A heat insulation protective cylinder (4) is provided on the top of the electric arc furnace body (1). A cavity (5) is left inside the heat insulation protective cylinder (4). An airflow guide pipe (6) is fixedly connected to the inner wall of the heat insulation protective cylinder (4). A connecting pipe (7) is fixedly connected to the bottom of the airflow guide pipe (6). A wind box (8) is fixedly connected to the outer surface of the heat insulation protective cylinder (4). A fan (9) is fixedly connected to the inner wall of the wind box (8). An air outlet pipe (10) is fixedly connected to one end of the fan (9). The air outlet pipe (10) extends into the cavity (5).

2. The electric arc furnace for graphene preparation according to claim 1, characterized in that: The other end of the fan (9) is fixedly connected to an air inlet pipe (11), which extends to the outer surface of the air box (8).

3. The electric arc furnace for graphene preparation according to claim 1, characterized in that: The top of the pad (2) is fixedly connected to a first cylinder (12), and the output end of the first cylinder (12) is fixedly connected to a first telescopic rod (13).

4. The electric arc furnace for graphene preparation according to claim 3, characterized in that: The top of the first telescopic rod (13) is fixedly connected to a connecting plate (14), and one end of the connecting plate (14) is fixedly connected to a furnace cover (15).

5. The electric arc furnace for graphene preparation according to claim 1, characterized in that: A connecting frame (16) is movably mounted on the top of the support base (3), and a second cylinder (17) is fixedly connected to the top of the connecting frame (16).

6. The electric arc furnace for graphene preparation according to claim 5, characterized in that: The output end of the second cylinder (17) is fixedly connected to a second telescopic rod (18), and the top of the second telescopic rod (18) is fixedly connected to an adjusting rod (19).

7. The electric arc furnace for graphene preparation according to claim 6, characterized in that: One end of the adjusting rod (19) is fixedly connected to the heat insulation protective cylinder (4), and the bottom of the connecting frame (16) is fixedly connected to the mounting plate (20).

8. The electric arc furnace for graphene preparation according to claim 7, characterized in that: The mounting plate (20) is internally threaded with bolts (21), and there are two bolts (21).

9. The electric arc furnace for graphene preparation according to claim 1, characterized in that: The bottom of the support base (3) is fixedly connected to a control box (22), and the bottom of the control box (22) is fixedly connected to a support leg.

10. The electric arc furnace for graphene preparation according to claim 1, characterized in that: The number of airflow guide pipes (6) is eight, and the eight airflow guide pipes (6) are arranged in a ring array on the inner wall of the heat insulation protective cylinder (4).

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