Equipment and method for preparing graphene by high-pressure physical stripping method

Abstract

The invention relates to the technical field of graphene preparation, in particular to equipment and method for preparing graphene through a high-pressure physical stripping method, and the equipment comprises a homogenizer main body, a feeding pipe, a discharging device, a feeding hopper and a sealing cover body; a sealing cover body is arranged at a hopper opening of the feeding hopper, and the feeding hopper is blocked by the sealing cover body, so that excessive adhesion and accumulation of external impurities and materials are avoided, and improvement of stripping processing quality is facilitated; materials on the inner side wall of the feeding hopper are blown away through gas sprayed out of a conical spraying pipe on the side of the annular pipe fitting, the gas is absorbed through a second gas conveying hose, impurities entering the feeding hopper are removed, and the positive effect on improving the stripping machining quality is achieved; meanwhile, an air injection pump drives a first air conveying hose to inject air to blow and remove residual materials adhered to the inner side wall of the feeding hopper, so that the adhered residual materials enter the homogenizer main body to be stripped and processed.

Description

Technical Field

[0001] The present invention relates to the technical field of graphene preparation, and specifically to an apparatus and method for preparing graphene by a high-pressure physical exfoliation method. Background Art

[0002] The production of graphene by the high-pressure physical exfoliation method is an environmentally friendly and advanced graphene production process developed in recent years. It utilizes the cavitation effect caused by the rotation and shear friction generated by the liquid under ultra-high-pressure movement conditions to squeeze into the stone production method; utilizes the erosion effect of the erosion agent to exfoliate high-purity graphite under high temperature and high pressure conditions; after retrieval, the document with the publication number CN214780776U discloses a device for preparing graphene by electrophoretic hydrodynamic cavitation liquid-phase exfoliation. Its scheme includes a graphite flake raw material slurry tank, a diaphragm pump, a high-pressure pump, an electrophoretic high-pressure liquid-phase exfoliation assembly, a first-stage cyclone separator, a second-stage cyclone separator, a graphene slurry tank, and a waste water tank. A diaphragm pump and a high-pressure pump are installed on the pipeline between the graphite flake raw material slurry tank and the input end of the electrophoretic high-pressure liquid-phase exfoliation assembly. A first-stage cyclone separator and a second-stage cyclone separator are installed on the pipeline connected to the output end of the electrophoretic high-pressure liquid-phase exfoliation assembly. The discharge port of the first-stage cyclone separator is communicated with the feed port of the second-stage cyclone separator, and the discharge port of the second-stage cyclone separator is communicated with the graphene slurry tank; its scheme processes the slurry material and performs exfoliation processing through the first-stage cyclone separator and the second-stage cyclone separator.

[0003] Existing exfoliation processing also uses a high-pressure homogenizer. A high-pressure homogenizer is usually a device that makes the graphene material in a suspension state flow at high speed through a cavity with a special internal structure under the action of ultra-high pressure and achieves a homogenization effect after reaction; after retrieval, the document with the publication number CN218872058U discloses a graphene high-pressure homogenizer. Its scheme improves and optimizes the problem that the inner wall of the feed hopper is prone to adhering to residual materials. Its scheme includes a homogenization machine case. One side of the homogenization machine case is fixedly connected with an operation box and a feed pipe. One side of the operation box is fixedly connected with a discharge pipe. Both the feed pipe and the discharge pipe are communicated with the operation box. The end of the feed pipe away from the homogenization machine case is fixedly connected with a feed hopper. A cleaning device is arranged on the outer side wall of the top of the feed hopper; in the present utility model, after manually rotating the bracket on the round rod to a corresponding angle, and then manually clamping the block into the round hole, the bracket can be fixed and limited at one end of the L-shaped block. When starting the electric telescopic rod to drive the scraper to move downward, the scraper scrapes the materials attached to the inner wall of the feed hopper, so as to avoid waste of materials.

[0004] In the above solution, when scraping and cleaning the residual material on the inner wall of the feed hopper, the residual material will also adhere to the bottom end face of the scraper, which will also affect the working efficiency of graphene stripping preparation; moreover, when the residual material adhering to the bottom side of the scraper cannot be removed in time, the residual material will contaminate the newly added material; the material added to the feed hopper is exposed, and impurities will also accumulate in the material, which has a negative impact on the stripping processing quality.

[0005] Therefore, the present invention proposes a device and method for preparing graphene by high-pressure physical stripping method to solve the above problems. Summary of the Invention

[0006] The purpose of the present invention is to provide a device and method for preparing graphene by high-pressure physical stripping method to solve the problems raised in the above background technology.

[0007] To achieve the above purpose, the present invention provides the following technical solution: A device for preparing graphene by high-pressure physical stripping method, including a homogenizer main body, a feed pipe, a discharge device, a feed hopper and a cover body;

[0008] A feed pipe and a discharge device are arranged on one side of the homogenizer main body, and a feed hopper is arranged at the top end of the feed pipe;

[0009] A cover body is arranged at the hopper opening of the feed hopper, and the cover body is connected to a stripping auxiliary mechanism;

[0010] A placement groove body is arranged on the cover end face of the cover body.

[0011] Preferably, the placement groove body is arranged in a ring shape, and a rubber sealing ring body is arranged in the placement groove body. An annular card slot is arranged in the rubber sealing ring body. An edge gasket is fixedly arranged on the edge side of the slot opening of the annular card slot. A positioning hole is arranged in the edge gasket, and the edge gasket is fixed by screws.

[0012] Preferably, the annular card slot is clamped with the hopper opening of the feed hopper, and auxiliary convex strips are arranged on the inner side wall of the annular card slot.

[0013] Preferably, the stripping auxiliary mechanism includes a first gas transmission hose, a first connector, an annular pipe fitting, a connecting foot, a docking head, a conical spray pipe and a matching component; one end of the first gas transmission hose is connected to the first connector. The first connector is arranged on the top end of the cover body, and a connecting socket is arranged inside the cover body. The connecting socket is communicated with the first connector. The docking head is adaptively inserted into the connecting socket, and the docking head is fixedly arranged on the annular pipe fitting.

[0014] Preferably, connecting feet are symmetrically and fixedly arranged on the side of the annular pipe fitting. The connecting feet are fixedly connected to the inner side of the cover body by screws. A conical injection pipe is arranged on the side of the annular pipe fitting.

[0015] Preferably, the conical injection pipe is communicated with the annular pipe fitting, and the conical injection pipe is inclined. The conical injection pipes on the annular pipe fitting are arranged at equal intervals in a ring shape.

[0016] Preferably, the matching assembly is arranged on the cover body, and the matching assembly includes an auxiliary cover body, a threaded connection pipe head, a second connection head, a connecting steel pipe, a third connection head, a second gas transmission hose and a carrier; a threaded connection pipe head is arranged at the top of the cover body of the auxiliary cover body. The threaded connection pipe head is connected to the connecting threaded cavity. The connecting threaded cavity is arranged at the center position inside the cover body, and the connecting threaded cavity is communicated with the second connection head. The second connection head is arranged on the cover body, and the second connection head is connected to one end of the connecting steel pipe. The other end of the connecting steel pipe is provided with a third connection head. The third connection head is connected to one end of the second gas transmission hose. A carrier is arranged in the connecting steel pipe.

[0017] Preferably, an auxiliary structure is arranged in the carrier. The auxiliary structure includes a containing cavity, an installation card slot, a bearing plate body and an elastic sealing head; the containing cavity is arranged in the carrier and there are two of them. An installation card slot is arranged at the orifice position of the containing cavity. The bearing plate body is adaptively inserted into the containing cavity, and an elastic sealing head is fixedly arranged at one end of the bearing plate body.

[0018] Preferably, a loading groove body is arranged through the bearing plate body. Elastic clamping rings are symmetrically and fixedly arranged in the loading groove body. One of the elastic clamping rings is adaptively clamped with a first annular card slot, and the other elastic clamping ring is adaptively clamped with a second annular card slot. The first annular card slot is arranged on the outer side wall of the first side ring. The second annular card slot is arranged on the outer side wall of the second side ring. The first side ring is fixedly arranged on the first mesh sheet. The second side ring is fixedly arranged on the second mesh sheet. The mesh aperture of the second mesh sheet is larger than that of the first mesh sheet. A conical pipe head is fixedly arranged at one end of the mesh of the second mesh sheet. The conical pipe head is inclined. The number of sets of the first mesh sheet and the second mesh sheet is the same, and a retention cavity is formed between the first mesh sheet and the second mesh sheet.

[0019] A method for preparing graphene by a high-pressure physical stripping method, and the method is as follows:

[0020] Pour the material into the feed hopper. Immediately after that, clamp the cover body at the hopper opening of the feed hopper, and it enters the main body of the homogenizer through the feed pipe. Then, carry out stripping and homogenization processing. The processed material is then discharged through the discharge device. Gas is conveyed towards the annular pipe fitting through the first gas transmission hose, and the gas ejected from the conical spray pipe on the side of the annular pipe fitting blows off the material on the inner wall of the feed hopper. Among them, the second gas transmission hose absorbs the gas to remove the impurities entering the feed hopper.

[0021] Compared with the prior art, the beneficial effects of the present invention are:

[0022] The homogenizer device for graphene preparation designed by the present invention is provided with a feed pipe and a discharge device on one side of the main body of the homogenizer. The top of the feed pipe is provided with a feed hopper; a cover body is provided at the hopper opening of the feed hopper to block the feed hopper with the cover body. The purpose is to avoid excessive adhesion and accumulation of external impurities and the material during the processing, which has a positive effect on improving the processing quality; it enters the main body of the homogenizer through the feed pipe, and then stripping and homogenization processing is carried out. The processed material is then discharged through the discharge device. Gas is conveyed towards the annular pipe fitting through the first gas transmission hose, and the gas ejected from the conical spray pipe on the side of the annular pipe fitting blows off the material on the inner wall of the feed hopper. Among them, the second gas transmission hose absorbs the gas to remove the impurities entering the feed hopper; the first gas transmission hose is connected to a jet pump, and the second gas transmission hose is connected to a suction pump; during this process, after pouring the material into the feed hopper, cover the cover body, the suction pump drives the second gas transmission hose to inhale, and a little impurity in the feed hopper is extracted and separated. At the same time, the jet pump drives the first gas transmission hose to jet air to ensure the air pressure balance in the feed hopper; similarly, the residual material adhered to the inner wall of the feed hopper is blown and removed, so that the adhered residual material enters the main body of the homogenizer for stripping processing. This process is mainly achieved through the combined use of the first gas transmission hose and the second gas transmission hose. Description of the Drawings

[0023] Figure 1 It is a schematic structural connection diagram of the high-pressure homogenizer for graphene preparation of the present invention;

[0024] Figure 2 is Figure 1 an enlarged schematic structural connection diagram at position A in

[0025] Figure 3 It is a schematic structural connection diagram of the feed hopper and the cover body of the present invention;

[0026] Figure 4 It is a schematic structural connection diagram of the cover body and the stripping auxiliary mechanism of the present invention;

[0027] Figure 5 is Figure 4Schematic enlarged view of the structural connection at B in [the figure];

[0028] Figure 6 Schematic diagram of the structural connection of the rubber seal ring body of the present invention;

[0029] Figure 7 is Figure 6 Schematic enlarged view of the structural connection at C in [the figure];

[0030] Figure 8 Schematic diagram of the structural connection of the annular pipe fitting of the present invention;

[0031] Figure 9 Schematic diagram of the structural connection of the auxiliary cover body in the matching component of the present invention;

[0032] Figure 10 Schematic diagram of the structural connection between the bearing plate body and the bearing plate body of the present invention;

[0033] Figure 11 Top view of the structural connection between the bearing plate body and the first mesh sheet and the second mesh sheet of the present invention;

[0034] Figure 12 Bottom view of the structural connection between the bearing plate body and the first mesh sheet and the second mesh sheet of the present invention.

[0035] In the figure: homogenizer main body 1, feed pipe 2, discharge device 3, feed hopper 4, cover body 5, placement tank body 601, rubber seal ring body 602, annular card slot 603, edge gasket 604, positioning hole 605, auxiliary rib 606, first gas transmission hose 701, first connector 702, annular pipe fitting 703, connecting foot 704, docking head 705, conical spray pipe 706, auxiliary cover body 801, threaded connection pipe head 802, second connector 803, connecting steel pipe 804, third connector 805, second gas transmission hose 806, carrier 807, accommodation cavity 901, installation card slot 902, bearing plate body 903, elastic plug 904, loading tank body 1001, elastic snap ring 1002, first mesh sheet 1003, first side ring 1004, first annular card slot 1005, second mesh sheet 1006, second side ring 1007, second annular card slot 1008, conical pipe head 1009. Specific embodiments

[0036] Next, the technical solutions in the embodiments of the present invention will be described clearly and completely. For the embodiments in the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

[0037] Embodiment 1: Please refer to Figures 1 - 12, a device for preparing graphene by a high-pressure physical stripping method, comprising a homogenizer main body 1, a feed pipe 2, a discharge device 3, a feed hopper 4 and a cover body 5.

[0038] One side of the homogenizer main body 1 is provided with a feed pipe 2 and a discharge device 3. The top of the feed pipe 2 is provided with a feed hopper 4; a cover body 5 is arranged at the hopper opening of the feed hopper 4, and the cover body 5 is connected to the stripping auxiliary mechanism; Pour the material into the feed hopper 4, then clamp the cover body 5 at the hopper opening of the feed hopper 4, enter the homogenizer main body 1 through the feed pipe 2, and then carry out stripping and homogenization processing. The processed material is then discharged from the discharge device 3, and gas is conveyed towards the annular pipe fitting 703 through the first gas transmission hose 701. The gas ejected from the side conical spray pipe 706 of the annular pipe fitting 703 blows the material on the inner wall of the feed hopper 4. Among them, the second gas transmission hose 806 absorbs the gas to remove the impurities entering the feed hopper 4; the first gas transmission hose 701 is connected to a jet pump, and the second gas transmission hose 806 is connected to a suction pump; during this process, after pouring the material into the feed hopper 4, cover the cover body 5, the suction pump drives the second gas transmission hose 806 to suck air, and a little impurity in the feed hopper 4 is extracted and separated. At the same time, the jet pump drives the first gas transmission hose 701 to jet air to ensure the air pressure balance in the feed hopper 4; similarly, when blowing and removing the residual material adhering to the inner wall of the feed hopper 4, the adhering residual material enters the homogenizer main body 1 for stripping processing. This process is mainly achieved by the combined use of the first gas transmission hose 701 and the second gas transmission hose 806.

[0039] The purpose of the sealing work of the cover body 5 on the feed hopper 4 is to avoid excessive adhesion and accumulation of foreign impurities and materials during the processing, which has a positive effect on improving the processing quality; since the cover body 5 is directly placed on the feed hopper 4, in order to improve its stability, the present solution provides a placement groove body 601 on the cover end face of the cover body 5; the placement groove body 601 is arranged in an annular shape, and a rubber sealing ring body 602 is arranged in the placement groove body 601, and an annular groove 603 is arranged in the rubber sealing ring body 602, and an edge pad body 604 is fixedly arranged on the groove side of the annular groove 603, and a positioning hole 605 is arranged in the edge pad body 604, and the edge pad body 604 is screwed in The annular groove 603 is fixedly connected with the hopper mouth of the feed hopper 4, and the inner wall of the annular groove 603 is provided with an auxiliary convex strip 606; by providing a rubber sealing ring body 602 and providing an annular groove 603 in the rubber sealing ring body 602, on the one hand, its clamping stability is improved, and on the other hand, it is also helpful to improve its clamping sealing performance, that is, when in use, the sealing body 5 is directly pressed on the top of the feed hopper 4, so that the annular groove 603 is clamped at the hopper mouth position of the feed hopper 4. After processing, when it is necessary to add materials again, the sealing body 5 is directly removed from the feed hopper 4, and the sealing body 5 is clamped on the feed hopper 4 after adding the materials. The operation is simple and convenient.

[0040] In this solution, one end of the first air delivery hose 701 in the stripping auxiliary mechanism is connected to the first connector 702, which is arranged at the top of the cover body 5, and a connecting socket is arranged on the inner side of the cover body 5, the connecting socket is connected to the first connector 702, the docking head 705 is adapted to be plugged with the connecting socket, and the docking head 705 is fixedly arranged on the annular pipe 703; wherein connecting feet 704 are symmetrically fixedly arranged on the side of the annular pipe 703, and the connecting feet 704 are fixedly connected to the inner side of the cover body 5 by screws, A conical injection pipe 706 is arranged on the side of the annular pipe 703; the conical injection pipe 706 is connected to the annular pipe 703, and the conical injection pipe 706 is inclined, and the conical injection pipe 706 on the annular pipe 703 is equidistantly arranged in a ring shape; wherein the conical injection pipe 706 which is annular and inclined can also form an annular airflow when injecting gas, so as to better remove the residue on the inner wall of the feed hopper 4, avoid residual dead corners as much as possible, avoid wasting material resources, and can further improve the processing efficiency.

[0041] The matching component in this scheme is arranged on the cover body 5, and the top of the cover body of the auxiliary cover body 801 in the matching component is provided with a threaded connection pipe head 802, the threaded connection pipe head 802 is connected to the connecting thread cavity, the connecting thread cavity is arranged at the inner center position of the cover body 5, and the connecting thread cavity is connected to the second connection head 803, the second connection head 803 is arranged on the cover body 5, and the second connection head 803 is connected to one end of the connecting steel pipe 804, and the other end of the connecting steel pipe 804 is provided with a third connection head 805, and the third connection head 806 is connected to the connecting thread cavity. The connector 805 is connected to one end of the second air hose 806, and a carrier 807 is provided in the connecting steel pipe 804; that is, in the process of adding materials, the sealing body 5 needs to be removed. In the process from adding materials to sealing the feed hopper 4 with the sealing body 5, it is inevitable that a small amount of impurities will enter the feed hopper 4. At this time, the second air hose 806 is driven by the vacuum pump to suck air, and the small amount of impurities in the feed hopper 4 are extracted and separated, so as to avoid contamination of the material by dirt as much as possible, which has a positive effect on improving the quality of its stripping processing.

[0042] During the process of extracting and separating impurities, in order to avoid the extracted impurities from affecting other devices, an auxiliary structure is also provided in the carrier 807. The auxiliary structure includes a receiving cavity 901, a mounting slot 902, a carrier plate 903, and an elastic plug 904. The receiving cavity 901 is provided in the carrier 807 and there are two of them. An installation slot 902 is provided at the opening of the receiving cavity 901. The carrier plate 903 is adaptively inserted into the receiving cavity 901, and an elastic plug 904 is fixedly provided at one end of the carrier plate 903. A loading slot 1001 is provided through the carrier plate 903, and elastic clamping rings 1002 are symmetrically and fixedly provided in the loading slot 1001. One of the elastic clamping rings 1002 is adaptively clamped with the first annular slot 1005, and the other elastic clamping ring 1002 is adaptively clamped with the second annular slot 1008. The first annular slot 1005 is provided on the outer wall of the first side ring 1004, and the second annular slot 1008 is provided on the outer wall of the second side ring 1007. The first side ring 1004 is fixedly provided on the first mesh sheet 1003, and the second side ring 1007 is fixedly provided on the second mesh sheet 1006. One end of the mesh hole on the second mesh sheet 1006 is fixedly provided with a tapered tube head 1009, and the tapered tube head 1009 is inclined. The number of sets of the first mesh sheet 1003 and the second mesh sheet 1006 is the same. Two receiving cavities 901 are provided in the carrier plate 903, and the carrier plate 903 is provided in the receiving cavity 901. The first mesh sheet 1003 and the second mesh sheet 1006 provided in the carrier plate 903 filter impurities. On the one hand, it improves the filtering effect. Another function is that when the carrier plate 903 needs to be replaced, it can be replaced alternately. That is, during the replacement or cleaning and maintenance process, it still has a certain working effect without the need for shutdown operation, improving work continuity and maintenance flexibility.

[0043] A loading slot 1001 is provided in the carrier plate 903, and the first mesh sheet 1003 and the second mesh sheet 1006 are installed in the loading slot 1001. The pore diameter of the mesh holes on the second mesh sheet 1006 is larger than that of the mesh holes on the first mesh sheet 1003. That is, impurities enter through the mesh holes on the second mesh sheet 1006 and then are blocked and filtered by the first mesh sheet 1003. A retention cavity is formed between the first mesh sheet 1003 and the second mesh sheet 1006. This has a storage effect on the filtered and blocked impurities. The tapered tube head 1009 provided on the second mesh sheet 1006 is inclined to prevent the filtered impurities from flowing back.

[0044] When replacement and maintenance are required, one of the carrier plates 903 can be taken out first, that is, the carrier plate 903 is directly pulled out through the elastic plug 904. Here, the elastic plug 904 can be set as a separately used component for maintenance work. That is, after the carrier plate 903 is pulled out, the separately provided elastic plug 904 is immediately used to plug the installation slot 902. Then, the first mesh sheet 1003 and the second mesh sheet 1006 in the loading tank 1001 are taken out, that is, by using fingers or corresponding workpieces to forcefully squeeze the first mesh sheet 1003 or the second mesh sheet 1006, they can be taken out. After the replacement and cleaning work are completed, the carrier plate 903 is quickly inserted into the accommodating cavity 901 at the corresponding position. At the same time, the replacement and maintenance of the other carrier plate 903 can be carried out according to the same operation as above.

[0045] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A device for preparing graphene by high-pressure physical exfoliation method, characterized in that: It comprises a homogenizer body (1), a feed pipe (2), a discharge device (3), a feed hopper (4) and a sealing body (5); A feed pipe (2) and a discharge device (3) are provided on one side of the homogenizer body (1), and a feed hopper (4) is provided at the top of the feed pipe (2); The hopper opening of the feed hopper (4) is provided with a sealing body (5), and the sealing body (5) is connected to the stripping auxiliary mechanism; The cover end surface of the cover body (5) is provided with a placement groove (601).

2. The device for preparing graphene by high pressure physical exfoliation method according to claim 1, characterized in that: The placement groove body (601) is arranged in a ring shape, and a rubber sealing ring body (602) is arranged in the placement groove body (601), an annular clamping groove (603) is arranged in the rubber sealing ring body (602), an edge pad body (604) is fixedly arranged on the groove side of the annular clamping groove (603), a positioning hole (605) is arranged in the edge pad body (604), and the edge pad body (604) is fixed by screws.

3. The device for preparing graphene by high pressure physical exfoliation method according to claim 2, characterized in that: The annular clamping groove (603) is clamped with the hopper opening of the feed hopper (4), and the inner side wall of the annular clamping groove (603) is provided with an auxiliary convex strip (606).

4. The device for preparing graphene by high pressure physical exfoliation method according to claim 1, characterized in that: The stripping auxiliary mechanism comprises a first air supply hose (701), a first connector (702), an annular pipe (703), a connecting foot (704), a docking joint (705), a conical injection pipe (706) and a matching component; one end of the first air supply hose (701) is connected to the first connector (702), the first connector (702) is arranged at the top end of the cover body (5), and a connecting socket is arranged on the inner side of the cover body (5), the connecting socket is connected to the first connector (702), the docking joint (705) is adapted to be plugged into the connecting socket, and the docking joint (705) is fixedly arranged on the annular pipe (703).

5. The device for preparing graphene by high pressure physical exfoliation method according to claim 4, characterized in that: The side of the annular tube (703) is symmetrically fixed with connecting feet (704), and the connecting feet (704) are fixedly connected to the inner side of the cover body (5) by screws. The side of the annular tube (703) is provided with a conical injection pipe (706).

6. The device for preparing graphene by high pressure physical exfoliation method according to claim 4, characterized in that: The conical injection pipe (706) is connected to the annular pipe (703), and the conical injection pipe (706) is inclined. The conical injection pipes (706) on the annular pipe (703) are equidistantly arranged in a ring shape.

7. The device for preparing graphene by high pressure physical exfoliation method according to claim 4, characterized in that: The matching assembly is arranged on the cover body (5), and the matching assembly comprises an auxiliary cover body (801), a threaded connection pipe head (802), a second connection head (803), a connecting steel pipe (804), a third connection head (805), a second gas delivery hose (806) and a carrier (807); a threaded connection pipe head (802) is arranged on the top of the cover body of the auxiliary cover body (801), and the threaded connection pipe head (802) is connected to a connecting thread cavity, and the connecting thread cavity is arranged on the cover body (5). The inner center position of the threaded cavity is connected to the second connector (803) for communication. The second connector (803) is arranged on the cover body (5), and the second connector (803) is connected to one end of the connecting steel pipe (804). The other end of the connecting steel pipe (804) is provided with a third connector (805). The third connector (805) is connected to one end of the second gas hose (806). A carrier (807) is arranged in the connecting steel pipe (804).

8. The device for preparing graphene by high pressure physical exfoliation method according to claim 7, characterized in that: An auxiliary structure is provided in the carrier (807), and the auxiliary structure comprises a accommodating cavity (901), a mounting slot (902), a carrier plate (903) and an elastic plugging head (904); the accommodating cavity (901) is provided in the carrier (807), and two accommodating cavities (901) are provided, and a mounting slot (902) is provided at the cavity opening of the accommodating cavity (901), the carrier plate (903) is adapted to be plugged in the accommodating cavity (901), and an elastic plugging head (904) is fixedly provided at one end of the carrier plate (903).

9. The device for preparing graphene by high pressure physical exfoliation method according to claim 8, characterized in that: The carrier plate (903) is provided with a loading slot (1001) penetrating therein, and elastic snap rings (1002) are symmetrically fixedly provided in the loading slot (1001), one of the elastic snap rings (1002) is adapted to be snapped with the first annular snap groove (1005), and the other elastic snap ring (1002) is adapted to be snapped with the second annular snap groove (1008), the first annular snap groove (1005) is provided on the outer side wall of the first side ring (1004), the second annular snap groove (1008) is provided on the outer side wall of the second side ring (1007), and the first side ring (1004) is fixedly provided with the elastic snap rings (1002) ... The first mesh sheet (1003) is disposed on the second side ring (1007), the second side ring (1007) is fixedly disposed on the second mesh sheet (1006), the mesh aperture on the second mesh sheet (1006) is larger than the mesh aperture on the first mesh sheet (1003), a conical tube head (1009) is fixedly disposed at one end of the mesh aperture on the second mesh sheet (1006), the conical tube head (1009) is inclined, the first mesh sheet (1003) and the second mesh sheet (1006) are disposed with the same number of groups, and a retention cavity is formed between the first mesh sheet (1003) and the second mesh sheet (1006).

10. A method for preparing graphene by high pressure physical exfoliation according to any one of claims 1 to 9, characterized in that: The method is: The material is poured into the feed hopper (4), and then the sealing body (5) is clamped at the hopper mouth of the feed hopper (4), and enters the homogenizer body (1) through the feed pipe (2), and then the material is peeled and homogenized. The processed material is discharged from the discharge device (3), and the gas is transported to the annular pipe (703) through the first gas hose (701). The gas sprayed from the conical injection pipe (706) on the side of the annular pipe (703) blows away the material on the inner wall of the feed hopper (4), and the second gas hose (806) absorbs the gas to remove the impurities entering the feed hopper (4).

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