CN107555421B - Graphene growth protection device - Google Patents

Abstract

The invention discloses a graphene growth protection device, comprising a base, a furnace body is fixed on the upper end of the base, a cavity is arranged inside the furnace body, and heaters are arranged in the cavity in sequence from top to bottom , heat transfer network and cooler, the inside of the heater is provided with a quartz tube, both ends of the quartz tube penetrate the heater and are respectively connected with a vacuum flange and a connecting flange, and the connecting flange is far away from the quartz tube One end of the quartz tube is connected with a gas transmission pipe, a cooling gas outlet pipe, a cooling gas inlet pipe and a pressure gauge, both ends of the quartz tube are sleeved with a first mounting plate and a second mounting plate, and both sides of the furnace body are locked The support plates are fixed with the tightening screws, and mounting brackets are fixed on the upper ends of the two support plates. The graphene growth protection device has perfect cooling protection measures, improves the quality of graphene, and facilitates disassembly of the quartz tube, which reduces the difficulty of cleaning and reduces the workload of staff.

Description

A kind of graphene growth protection device

technical field

The invention relates to the technical field of graphene production, in particular to a graphene growth protection device.

Background technique

Graphene originally exists in nature, but it is difficult to exfoliate a single-layer structure. Graphene is layered up to form graphite, and graphite 1 mm thick contains about 3 million layers of graphene. The pencil scratches lightly on the paper, and the traces left may be several layers or even only one layer of graphene. Graphene is a two-dimensional periodic honeycomb lattice structure composed of carbon six-membered rings, which can be warped into zero-dimensional The fullerene is rolled into one-dimensional carbon nanotubes or stacked into three-dimensional graphite, so graphene is the basic unit of other graphite materials, and the basic structural unit of graphene is the most stable benzene six-membered ring in organic materials. It is currently the most ideal two-dimensional nanomaterial. The ideal graphene structure is a plane hexagonal lattice, which can be regarded as a layer of exfoliated graphite molecules. Each carbon atom is sp2 hybridized and contributes the remaining p The electrons on the orbital form large π bonds, and the π electrons can move freely, giving graphene good electrical conductivity. The two-dimensional graphene structure can be seen as the basic unit for forming all sp2 hybrid carbonaceous materials. However, the protection measures in the existing graphene growth process are not perfect, which affects the performance of graphene, and the graphene growth work is carried out in a quartz tube, but the disassembly of the quartz tube is cumbersome, which makes cleaning difficult and increases the workload of the staff.

SUMMARY OF THE INVENTION

The purpose of the present invention is to solve the problems of imperfect protection measures and complicated disassembly of quartz tubes in the prior art, and propose a graphene growth protection device.

In order to achieve the above object, the present invention adopts the following technical solutions:

A graphene growth protection device, comprising a base, the upper end of the base is fixed with a furnace body, the interior of the furnace body is provided with a cavity, and a heater and a heat transfer network are sequentially arranged in the cavity from top to bottom As with the cooler, the inside of the heater is provided with a quartz tube, both ends of the quartz tube penetrate the heater and are respectively connected with a vacuum flange and a connection flange, and the end of the connection flange away from the quartz tube communicates with The gas transmission pipe, the cooling gas outlet pipe, the cooling gas inlet pipe and the pressure gauge, the two ends of the quartz tube are sheathed with a first mounting plate and a second mounting plate, and the two sides of the furnace body are fixed with locking screws. Support plates, the upper ends of the two support plates are fixed with mounting brackets, and the upper ends of the two mounting brackets are respectively sleeved on both ends of the quartz tube, and the two mounting brackets are connected to the first mounting plate and the second mounting plate. There are connecting rods between them, and both ends of the connecting rods are sleeved with limiting devices.

Preferably, the limiting device includes a first limiting plate and a second limiting plate, a rubber plate is provided on the side of the first limiting plate and the second limiting plate close to the connecting rod, and the first limiting plate is Both ends of the position plate and the second limit plate are respectively provided with a first limit block and a second limit block, and a limit rod is arranged between the first limit block and the second limit block, and the first limit block and the second limit block are provided with a limit rod. Both the limit block and the second limit block are provided with screw holes corresponding to the limit rods, the two screw holes are respectively provided with threads in opposite directions, and the two ends of the limit rods respectively penetrate two A screw hole is provided, and the limit rod, the first limit block and the second limit block are all threadedly connected.

Preferably, a through groove is provided inside the support plate, a fixing rod is arranged in the through groove, an inner thread is provided on the inner side wall of the through groove and is threadedly connected with the fixing rod, and the lower end of the fixing rod penetrates through The groove is connected with a fixed block, a spring is arranged between the fixed block and the support plate, both ends of the fixed rod pass through the through groove, and the upper end of the fixed rod is sleeved with a rubber ring, and the lower end of the fixed rod is connected to the Rotational connection between fixed blocks.

Preferably, the cooler is fixed on the bottom side wall in the cavity by means of locking screws.

Preferably, valves are provided on the gas delivery pipe, the cooling gas outlet pipe and the cooling gas inlet pipe.

Preferably, the lower end of the base is provided with a running mechanism, and the running mechanism adopts a universal wheel.

In the present invention, the graphene growth protection device realizes the overall movement through the walking mechanism at the lower end of the base, so that the device is suitable for working in different places, and the utilization rate of the device is improved. After reaching the designated place, the fixed rod is rotated to make the fixed block downward Move, push the fixed block to contact the location, complete the position limit of the device, and ensure the stability of the work. When moving, turn the fixed rod in the opposite direction, the spring will pull the fixed block up, which is convenient for moving, and the graphene material enters through the gas pipe. In the quartz tube, the heater is heated outside the quartz tube to increase the internal temperature of the quartz tube to reach the temperature required for graphene growth. After heating, the graphene growth is completed, the heater is turned off, and the cooler is used for cooling, and the heat transfer network realizes cooling. The speed is accelerated, and at the same time, by passing the cooling gas from the cooling gas inlet tube into the quartz tube, and from the cooling gas outlet tube to complete the cooling cycle of the cooling gas in the quartz tube, the cooling speed is accelerated, and the graphene is precipitated, and the pressure gauge can realize the pressure monitoring in the quartz tube. , to ensure the safety of the quartz tube. When the quartz tube needs to be cleaned, turn the limit rod to make the first limit block and the second limit block move at the same time, so that the first limit plate and the second limit plate are loosened to the connecting rod. To fix it, the connecting rod is pulled away, which facilitates the disassembly of the quartz tube and makes the cleaning simple. The graphene growth protection device has perfect cooling protection measures, improves the quality of graphene, and facilitates disassembly of the quartz tube, which reduces the difficulty of cleaning and reduces the workload of staff.

Description of drawings

Fig. 1 is the structural representation of a kind of graphene growth protection device proposed by the present invention;

Fig. 2 is the structural representation of the A place of a kind of graphene growth protection device proposed by the present invention;

3 is a schematic structural diagram of a limiting device of a graphene growth protection device proposed by the present invention.

In the picture: 1 traveling mechanism, 2 base, 3 cooler, 4 heat transfer net, 5 support plate, 6 fixing rod, 7 fixing block, 8 spring, 9 rubber ring, 10 mounting frame, 11 vacuum flange, 12 quartz tube , 13 gas pipeline, 14 connecting flange, 15 cooling gas outlet pipe, 16 cooling gas inlet pipe, 17 valve, 18 pressure gauge, 19 heater, 20 furnace body, 21 first mounting plate, 22 connecting rod, 23 limit Device, 24 first limit plate, 25 second limit plate, 26 first limit block, 27 second limit block, 28 limit rod, 29 rubber plate, 30 second installation plate.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments.

In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inside", " The orientation or positional relationship indicated by "outside" is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the indicated device or element must have a specific orientation, so as to The specific orientation configuration and operation are therefore not to be construed as limitations of the present invention.

1-2, a graphene growth protection device, comprising a base 2, the upper end of the base 2 is fixed with a furnace body 20, the interior of the furnace body 20 is provided with a cavity, and the cavity is sequentially provided with heaters from top to bottom 19. Heat transfer network 4 and cooler 3, quartz tube 12 is arranged inside heater 19, both ends of quartz tube 12 penetrate heater 19 and are respectively connected with vacuum flange 11 and connecting flange 14, connecting flange 14. One end away from the quartz tube 12 is connected with the gas transmission pipe 13, the cooling gas outlet pipe 15, the cooling gas inlet pipe 16 and the pressure gauge 18, the heater 19 is turned off, and the cooling is carried out by the cooler 3, and the heat transfer network 4 realizes the acceleration of the cooling speed At the same time, by entering the cooling gas into the quartz tube 12 from the cooling gas inlet tube 16, and completing the cooling cycle of the cooling gas in the quartz tube 12 from the cooling gas outlet tube 15, the cooling speed is accelerated, and the graphene is precipitated. The pressure gauge 18 can realize quartz The pressure monitoring in the tube 12 ensures the safety of the quartz tube 12. The graphene material enters the quartz tube 12 through the gas delivery tube 13, and is heated outside the quartz tube 12 by the heater 19 to achieve an increase in the internal temperature of the quartz tube 12 to achieve graphene. The temperature required for growth is heated to complete the growth of graphene, the two ends of the quartz tube 12 are sheathed with a first mounting plate 21 and a second mounting plate 30, and both sides of the furnace body 20 are fixed with support plates 5 by locking screws, The upper ends of the two support plates 5 are fixed with mounting brackets 10, and the upper ends of the two mounting brackets 10 are respectively sleeved on both ends of the quartz tube 12. The two mounting brackets 10 are connected to the first mounting plate 21 and the second mounting plate 30. There are connecting rods 22 therebetween, and both ends of the connecting rods 22 are sleeved with limiting devices 23 .

In the present invention, the limiting device 23 includes a first limiting plate 24 and a second limiting plate 25 , a rubber plate 29 is provided on the side of the first limiting plate 24 and the second limiting plate 25 close to the connecting rod 22 . Both ends of a limiting plate 24 and a second limiting plate 25 are respectively provided with a first limiting block 26 and a second limiting block 27 , and a limiting block is provided between the first limiting block 26 and the second limiting block 27 The rod 28, the first limit block 26 and the second limit block 27 are all provided with screw holes corresponding to the limit rod 28, and the two screw holes are respectively provided with threads in opposite directions. The ends respectively pass through two screw holes, and the limit rod 28 is connected with the first limit block 26 and the second limit block 27 by threads. When the quartz tube 12 needs to be cleaned, the limit rod 28 is rotated to make the first limit The limit block 26 and the second limit block 27 move at the same time, so that the first limit plate 24 and the second limit plate 25 release the fixing of the connecting rod 22 , and the connecting rod 22 is pulled away to facilitate the disassembly of the quartz tube 12 , to make cleaning simple, the support plate 5 is provided with a through groove inside, a fixed rod 6 is arranged in the through groove, an inner thread that is threadedly connected with the fixed rod 6 is provided on the inner side wall of the through groove, and the lower end of the fixed rod 6 penetrates through the through groove and A fixed block 7 is connected, a spring 8 is arranged between the fixed block 7 and the support plate 5, both ends of the fixed rod 6 pass through the through groove, and the upper end of the fixed rod 6 is sleeved with a rubber ring 9, and the lower end of the fixed rod 6 and The fixed blocks 7 are connected by rotation. After reaching the designated place, turn the fixed rod 6 to move the fixed block 7 downward, push the fixed block 7 to contact the place, complete the position limitation of the device, and ensure the stability during work. , reversely rotate the fixing rod 6, the spring 8 pulls up the fixing block 7, which is convenient to move, the cooler 3 is fixed on the bottom side wall of the cavity by the locking screw, the gas delivery pipe 13, the cooling gas outlet pipe 15 and the cooling The gas inlet pipe 16 is provided with a valve 17, the valve 17 is locked, and the gas is placed to leak out. The lower end of the base 2 is provided with a traveling mechanism 1. The traveling mechanism 1 adopts a universal wheel, and the traveling mechanism 1 realizes the overall movement, making the device suitable for use. Work in different locations to improve the utilization of the device.

In the present invention, the graphene growth protection device realizes the overall movement through the walking mechanism 1 at the lower end of the base 2, so that the device is suitable for working in different locations, and the utilization rate of the device is improved. After reaching the designated location, the fixed rod 6 is rotated to make the fixed The block 7 moves down, pushes the fixed block 7 to contact the location, completes the position limit of the device, and ensures the stability during work. When it needs to move, the fixed rod 6 is rotated in the opposite direction, and the spring 8 pulls the fixed block 7 up, which is convenient for movement. The graphene material enters the quartz tube 12 through the gas pipe 13, and is heated outside the quartz tube 12 by the heater 19 to achieve an increase in the internal temperature of the quartz tube 12, reaching the temperature required for graphene growth, heating to complete the graphene growth, and closing. The heater 19 is cooled by the cooler 3, and the heat transfer network 4 realizes the acceleration of the cooling speed. At the same time, the cooling gas enters the quartz tube 12 from the cooling gas inlet pipe 16, and the cooling gas is discharged from the cooling gas pipe 15 to complete the cooling gas in the quartz tube. The cooling cycle in 12 can speed up the cooling speed to precipitate graphene, and the pressure gauge 18 can realize the pressure monitoring in the quartz tube 12 to ensure the safety of the quartz tube 12. When the quartz tube 12 needs to be cleaned, rotate the limit rod 28 to make the first The limit block 26 and the second limit block 27 move at the same time, so that the first limit plate 24 and the second limit plate 25 release the fixing of the connecting rod 22 , and the connecting rod 22 is pulled away to facilitate the disassembly of the quartz tube 12 , to make cleanup simple. The graphene growth protection device has perfect cooling protection measures, improves the quality of graphene, and facilitates disassembly of the quartz tube, which reduces the difficulty of cleaning and reduces the workload of staff.

The above description is only a preferred embodiment of the present invention, but the protection scope of the present invention is not limited to this. The equivalent replacement or change of the inventive concept thereof shall be included within the protection scope of the present invention.

Claims (1)

1. A graphene growth protection device, comprising a base (2), characterized in that a furnace body (20) is fixed on the upper end of the base (2), and a cavity is provided in the interior of the furnace body (20), A heater (19), a heat transfer net (4) and a cooler (3) are arranged in the cavity in sequence from top to bottom, and a quartz tube (12) is arranged inside the heater (19). Both ends of the quartz tube (12) penetrate the heater (19) and are respectively connected with a vacuum flange (11) and a connecting flange (14), and the connecting flange (14) communicates with one end away from the quartz tube (12) There is a gas delivery pipe (13), a cooling gas outlet pipe (15), a cooling gas inlet pipe (16) and a pressure gauge (18). The second mounting plate (30), the two sides of the furnace body (20) are fixed with support plates (5) by locking screws, and the upper ends of the two support plates (5) are fixed with mounting brackets (10) , and the upper ends of the two mounting brackets (10) are respectively sleeved on both ends of the quartz tube (12), and the two mounting brackets (10) are connected to the first mounting plate (21) and the second mounting plate (30). A connecting rod (22) is provided between the connecting rods (22), and limiting devices (23) are sleeved at both ends of the connecting rod (22); The cooler (3) is fixed on the bottom side wall in the cavity by means of locking screws; Valves (17) are provided on the gas delivery pipe (13), the cooling gas outlet pipe (15) and the cooling gas inlet pipe (16); The lower end of the base (2) is provided with a traveling mechanism (1), and the traveling mechanism (1) adopts a universal wheel; The limiting device (23) includes a first limiting plate (24) and a second limiting plate (25), the first limiting plate (24) and the second limiting plate (25) being close to the connecting rod ( 22) is provided with a rubber plate (29) on one side, and both ends of the first limit plate (24) and the second limit plate (25) are respectively provided with a first limit block (26) and a second limit block. A position block (27), a limit rod (28) is arranged between the first limit block (26) and the second limit block (27), and the first limit block (26) and the second limit block (27) are provided with a limit rod (28). The inside of the block (27) is provided with screw holes corresponding to the limit rods (28), the two screw holes are respectively provided with threads in opposite directions, and the two ends of the limit rods (28) penetrate through the two holes respectively. screw holes, and the limit rod (28), the first limit block (26) and the second limit block (27) are all screwed together; The support plate (5) is provided with a through slot inside, a fixing rod (6) is arranged in the through slot, and an inner thread that is threadedly connected with the fixing rod (6) is arranged on the inner side wall of the through slot. The lower end of the fixing rod (6) penetrates the through groove and is connected with a fixing block (7). A spring (8) is arranged between the fixing block (7) and the support plate (5). The ends pass through the through grooves, and the upper end of the fixing rod (6) is sleeved with a rubber ring (9), and the lower end of the fixing rod (6) is rotatably connected with the fixing block (7).

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