Graphene copper powder preparation device

Abstract

The invention relates to the technical field of graphene, and discloses a graphene copper powder preparation device which comprises a reaction furnace, a heating piece, a copper source supply module, an air inlet supply piece, a first negative pressure piece, a dispersion module and a second negative pressure piece, the outer wall of the reaction furnace is covered with the heating piece, one side of the reaction furnace communicates with the copper source supply module, and the other side of the reaction furnace communicates with the air inlet supply piece; according to the copper powder dispersing device, the rotating shaft rotates to drive the blanking piece and the scraping piece to operate at the same time, the blanking piece enables the copper powder to fall to the falling point of the rotating disc to reciprocate along the radius of the rotating disc, dispersing of the copper powder is accelerated, and the copper powder dispersing effect is improved. The copper powder falling on the rotating disc is changed into a swinging and scattering form from a concentrated dripping form, the possibility of copper powder accumulation is reduced, the scraping piece rotates and scrapes the surface of the rotating disc through rotation of the rotating disc, the accumulated and formed copper powder is scattered again, and copper powder accumulation is eliminated.

Description

Technical Field

[0001] The invention relates to the technical field of graphene, and more specifically, to a graphene copper powder preparation device. Background Art

[0002] Graphene copper powder is a composite material made of nanographene and copper powder. It has a variety of special physical and chemical properties and is suitable for various applications. Due to its excellent performance in electrical conductivity, thermal conductivity, mechanical strength and chemical stability, it has broad application prospects in the fields of electronic devices and electromagnetic shielding, and provides innovative material solutions for various industrial and technological applications.

[0003] The Chinese patent with publication number CN110181043B proposes a method and device for preparing graphene-coated copper powder, which aims to slowly drop the copper powder from a transport rotating device to the center of a disc after being decelerated by a feeding device. The disc rotation device controls the rotation of the disc, and the copper powder dripped on the disc is dispersed to avoid adhesion, while ensuring the heating residence time in the cavity. The protective gas argon, reducing gas hydrogen and carbon source methane introduced from the air inlet end are sucked in under the low pressure of the cavity, and the graphene is coated on the copper powder. Finally, the product is collected by a material collecting device. Through the specific implementation of the above scheme, the copper powder can be dispersed without adding an isolation agent to prevent high-temperature adhesion, and the copper powder is coated with graphene in situ.

[0004] The above scheme essentially uses the centrifugal effect generated by the high-speed rotating disc to disperse the falling copper powder, in order to obtain the effect of high copper powder dispersion. However, when this scheme is implemented, although the centrifugal effect can significantly increase the dispersion of the copper powder, the disc forms a barrier on the path of the copper powder falling, resulting in that after the copper powder contacts the rotating disc, part of the copper powder is directly thrown out by the centrifugal effect, and the other part will stay on the surface of the disc and accumulate for a period of time. Even if this part of the copper powder is eventually thrown out and diffused as the disc continues to rotate, this part of the copper powder cannot fully contact with the carbon source atmosphere when it stays on the disc, resulting in a lack of bonding between the surface of this part of the copper powder and graphene in the final product obtained during the continuous production process due to insufficient contact time with the carbon source atmosphere (reference to the bonding mechanism of copper and graphene). Figure 2 ), that is, the purity of the finished product is not high (it contains graphene copper powder with bonding vacancies). Summary of the invention

[0005] The invention provides a graphene copper powder preparation device, which solves the technical problem in the related art that the purity of the finished product is low due to the lack of combination of copper powder and graphene.

[0006] The present invention provides a graphene copper powder preparation device, comprising a reaction furnace, a heating element, a copper source supply module, an air intake supply element, a first negative pressure element, a dispersion module and a second negative pressure element, wherein the outer wall of the reaction furnace is covered with a heating element, one side of the reaction furnace is connected to the copper source supply module, and the other side is connected to the air intake supply element, the first negative pressure element and the second negative pressure element are both connected to the reaction furnace, and the reaction furnace is equipped with a dispersion module;

[0007] The dispersion module includes a second motor, a rotating shaft, a rotating disk, a blanking piece, a scraper and a shell. The rotating shaft is rotatably installed in the reaction furnace. One end of the rotating shaft is fixedly connected to the output end of the second motor, and a rotating disk is fixedly installed on the other end. A blanking piece is cooperated between the rotating disk and the copper source supply module. A shell is fixed on the inner wall of the reaction furnace. A scraper is arranged between the shell and the rotating disk. The rotation of the rotating shaft drives the blanking piece and the scraper to move at the same time. The blanking piece makes the landing point of the copper powder on the rotating disk change back and forth, and the scraper scrapes out and diffuses the copper powder accumulated on the rotating disk.

[0008] As a further solution of the present invention: the blanking part includes a cam, a bracket, a top plate, a spring, a traction rod, a second funnel, a blanking pipe, a bellows and a ring, the cam is fixedly installed on the rotating shaft, the bracket is slidably installed on one side of the outer shell, the top plate is fixed on the end of the bracket extending into the outer shell, the top plate is in extrusion contact with the cam, a spring is arranged between the bracket and the outer shell, a traction rod is fixedly installed on one end of the bracket, the second funnel is fixed in the reactor, a bellows is connected between the blanking pipe and the bottom end of the second funnel, a ring is fixedly sleeved on the blanking pipe, and the ring is fixedly connected to the traction rod.

[0009] As a further solution of the present invention: the scraping member includes a rotating wheel, a vertical pole, a cross bar, a roller, a box body, a scraper and an adapter frame, the rotating wheel is fixedly installed on the rotating shaft, the rotating wheel surface is not perpendicular to the rotating shaft, the limiting blocks are symmetrically fixedly installed in the outer shell, the vertical poles are slidably connected relative to the limiting blocks, the vertical poles are symmetrically installed with cross bars, the ends of the cross bars are fixed with rollers matching the rotating wheel, the box body is fixedly installed above the outer shell, the scraper is slidably inserted in the box body, the top of the scraper is fixedly connected to the adapter frame, the bottom end of the scraper is in extrusion contact with the upper surface of the turntable, and the adapter frame is fixedly connected to the top of the vertical pole.

[0010] As a further solution of the present invention: the outer wall of the box body is in an arc shape inclined upward.

[0011] As a further solution of the present invention: the copper source supply module includes a feed pipe, an auger, a first funnel, a first motor and a discharge head, the feed pipe is rotatably installed with an auger, one end of the feed pipe is connected to the first funnel, and the other end is connected to the discharge head, the output end of the first motor is fixedly connected to the auger, and the mouth of the discharge head is aligned with the center of the dispersion module.

[0012] As a further solution of the present invention: both the first negative pressure member and the second negative pressure member are vacuum pumps, the first negative pressure member forms a low-pressure environment in the reaction furnace, and the second negative pressure member absorbs and collects the finished graphene copper powder.

[0013] As a further solution of the present invention: an air pressure detector is installed in the reaction furnace near the first negative pressure member.

[0014] As a further solution of the present invention: a material retaining ring is installed near the second negative pressure member in the reaction furnace, and the inner diameter of the material retaining ring is smaller than the diameter of the turntable.

[0015] As a further solution of the present invention: methane is selected as the carbon source on the gas inlet supply part side and introduced into the reaction furnace together with the protective gas argon and the reducing gas hydrogen.

[0016] As a further solution of the present invention: the heating element is selected as a heating coil.

[0017] The beneficial effects of the present invention are:

[0018] The rotation of the rotating shaft in the present invention drives the operation of the blanking member and the scraping member at the same time. When the blanking member is in motion, the point where the copper powder falls onto the turntable moves back and forth along the radius of the turntable, thereby accelerating the dispersion of the copper powder and causing the copper powder to change from concentrated dripping to swinging and scattering when falling on the turntable, thereby reducing the possibility of copper powder accumulation. The action part of the scraping member contacts the turntable, and the rotation of the turntable itself is used to form a rotating scraping action on the surface of the turntable, thereby re-breaking the accumulated copper powder and eliminating the accumulation of copper powder. The scraping member moves with the rotation of the rotating shaft to avoid the copper powder being stuck between its action part and the surface of the turntable. The dispersion module can not only realize the diffusion effect on the copper powder, but also solve the problem of copper powder accumulation and retention, thereby ensuring that the contact between the copper powder and the carbon source atmosphere is more uniform, thereby effectively improving the purity of the finished graphene copper powder.

[0019] The outer wall of the box body is in an upwardly inclined arc shape. As the scraper moves up and down, when the copper powder is blocked by the box body and leaves the scraper, the copper powder is diffused along the arc surface, which can effectively increase the diffusion degree of the copper powder. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of a graphene copper powder preparation device proposed by the present invention;

[0021] Figure 2 It is a schematic diagram of the bonding mechanism between copper and graphene;

[0022] Figure 3 It is a schematic diagram of the internal planar structure of a graphene copper powder preparation device proposed by the present invention;

[0023] Figure 4It is a schematic diagram of the internal three-dimensional structure of a graphene copper powder preparation device proposed by the present invention;

[0024] Figure 5 It is a schematic diagram of the overall structure of a dispersion module in a graphene copper powder preparation device proposed by the present invention;

[0025] Figure 6 It is a schematic diagram of the cross-sectional structure of a dispersion module in a graphene copper powder preparation device proposed by the present invention;

[0026] Figure 7 It is a detailed structural diagram of a blanking part and a scraping part in a graphene copper powder preparation device proposed by the present invention;

[0027] Figure 8 It is a detailed structural diagram of a dispersion module in a graphene copper powder preparation device proposed by the present invention;

[0028] Fig. 9 It is a schematic diagram of the change of the action of the blanking parts in the graphene copper powder preparation device proposed by the present invention;

[0029] Fig.10 yes Figure 8 Detailed structural diagram at A in the middle;

[0030] Fig.11 It is a schematic diagram of the expanded structure of a copper source supply module in a graphene copper powder preparation device proposed by the present invention.

[0031] In the figure: 1, reaction furnace; 2, heating element; 3, copper source supply module; 31, feeding pipe; 32, auger; 33, first funnel; 34, first motor; 35, discharge head; 4, air supply element; 5, first negative pressure element; 50, air pressure detector; 6, dispersion module; 61, second motor; 62, rotating shaft; 63, rotating disk; 64, blanking element; 641, cam; 642, bracket; 643 , top plate; 644, spring; 645, traction rod; 646, second funnel; 647, drop pipe; 648, bellows; 649, collar; 65, scraper; 651, rotating wheel; 652, vertical pole; 653, horizontal rod; 654, roller; 655, box body; 656, scraper; 657, adapter frame; 66, outer shell; 660, limit block; 7, second negative pressure member; 70, material blocking ring. DETAILED DESCRIPTION

[0032] The subject matter described herein will now be discussed with reference to example implementations. It should be understood that the discussion of these implementations is only to enable those skilled in the art to better understand and implement the subject matter described herein, and the functions and arrangements of the elements discussed may be changed without departing from the scope of protection of the contents of this specification. Various examples may omit, replace, or add various processes or components as needed. In addition, the features described in some examples may also be combined in other examples.

[0033] The present invention prepares graphene copper powder based on an in-situ growth method. In the related field of graphene copper powder preparation, the so-called in-situ growth method refers to:

[0034] ①Precursor preparation:

[0035] A suitable copper source and a carbon source (graphene precursor) are selected, the copper source is mixed with the graphene precursor, and is properly treated to improve reactivity.

[0036] ② Mixing and reduction:

[0037] The mixture is heated in a high temperature environment, usually using a vapor phase deposition (CVD) method. At high temperature, the graphene precursor is reduced to form graphene, and the copper source is combined with the graphene.

[0038] ③ In situ growth:

[0039] At high temperatures, graphene grows in situ on a copper substrate, e.g. Figure 2 As shown, copper provides support during the growth process and forms the base layer of graphene.

[0040] Corresponding to the above, at least one embodiment of the present invention discloses a graphene copper powder preparation device, such as Figure 1 - Fig.11 As shown, it includes a reaction furnace 1, a heating element 2, a copper source supply module 3, an air intake supply element 4, a first negative pressure element 5, a dispersion module 6 and a second negative pressure element 7. The outer wall of the reaction furnace 1 is covered with a heating element 2. One side of the reaction furnace 1 is connected to the copper source supply module 3, and the other side is connected to the air intake supply element 4. The first negative pressure element 5 and the second negative pressure element 7 are both connected to the reaction furnace 1. The reaction furnace 1 is equipped with a dispersion module 6.

[0041] When preparing graphene copper powder, the copper powder is introduced into the reactor 1 from the copper source supply module 3, dispersed by the dispersion module 6, the first negative pressure member 5 is opened, so that low pressure is formed in the reactor 1, methane is selected as the carbon source, and introduced into the reactor 1 from the air intake supply member 4 together with the protective gas argon and the reducing gas hydrogen, and quickly diffused through the low pressure in the reactor 1 to mix with the dispersed copper powder, the heating member 2 is opened to provide the high temperature environment required for the reaction, and the heating member 2 can select a variety of existing components such as heating rods and heating coils for use alone or in combination, and methane is reduced to obtain in-situ growth of graphene on the copper powder substrate, and the obtained graphene copper powder falls in the reactor 1 under the action of its own gravity, and the second negative pressure member 7 is opened to collect the finished graphene copper powder by negative pressure suction.

[0042] The dispersion module 6 includes a second motor 61, a rotating shaft 62, a rotating disk 63, a blanking piece 64, a scraper 65 and a shell 66. The rotating shaft 62 is rotatably installed in the reaction furnace 1. One end of the rotating shaft 62 is fixedly connected to the output end of the second motor 61, and the other end is fixedly installed with a rotating disk 63. A blanking piece 64 is matched between the rotating disk 63 and the copper source supply module 3. A shell 66 is fixed on the inner wall of the reaction furnace 1. A scraper 65 is arranged between the shell 66 and the rotating disk 63. The rotating shaft 62 rotates and drives the blanking piece 64 and the scraper 65 to move at the same time. The blanking piece 64 causes the landing point of the copper powder on the rotating disk 63 to change reciprocally, and the scraper 65 scrapes out and diffuses the copper powder accumulated on the rotating disk 63.

[0043] After the copper powder is introduced into the reaction furnace 1 from the copper source supply module 3, it is dispersed by the dispersion module 6. In the dispersion module 6, the second motor 61 is started to drive the turntable 63 to rotate at a high speed through the rotating shaft 62. The copper powder falling on the turntable 63 is diffused from the center to the edge by the centrifugal effect provided by the rotation of the turntable 63, so as to achieve the effect of dispersing the copper powder and making it fully contact with the carbon source atmosphere. The rotation of the rotating shaft 62 simultaneously drives the operation of the blanking member 64 and the scraping member 65. When the blanking member 64 is in motion, the point where the copper powder falls to the turntable 63 moves back and forth along the radius of the turntable 63, thereby accelerating the dispersion of the copper powder, so that the copper powder falls on the turntable 63 from the center to the edge. The concentrated dripping form is transformed into a swinging scattering form, which reduces the possibility of copper powder accumulation. The working part of the scraper 65 is in contact with the turntable 63, and the rotation of the turntable 63 itself forms a rotating scraping action on the surface of the turntable 63, so that the copper powder that has been accumulated and formed is re-dispersed to eliminate the accumulation of copper powder. The scraper 65 moves with the rotation of the rotating shaft 62 to avoid the copper powder being stuck between its working part and the surface of the turntable 63. The dispersion module 6 can not only realize the diffusion effect on the copper powder, but also solve the disadvantage of copper powder accumulation and retention, ensure that the contact between the copper powder and the carbon source atmosphere is more uniform, and effectively improve the purity of the finished graphene copper powder.

[0044] The blanking member 64 includes a cam 641, a bracket 642, a top plate 643, a spring 644, a traction rod 645, a second funnel 646, a blanking pipe 647, a bellows 648 and a collar 649. The cam 641 is fixedly mounted on the rotating shaft 62. The bracket 642 is slidably mounted on one side of the shell 66. A top plate 643 is fixed on one end of the bracket 642 extending into the shell 66. The top plate 643 is in extrusion contact with the cam 641. A spring 644 is provided between the bracket 642 and the shell 66. A traction rod 645 is fixedly mounted on one end of the bracket 642. A second funnel 646 is fixed in the reactor 1. A bellows 648 is connected between the blanking pipe 647 and the bottom end of the second funnel 646. A collar 649 is fixedly sleeved on the blanking pipe 647. The collar 649 is fixedly connected to the traction rod 645.

[0045] In the blanking part 64, the rotating shaft 62 drives the cam 641 to rotate. When the cam 641 rotates, when its protruding part contacts the top plate 643, the bracket 642 is pushed outward, and the traction rod 645 moves outward along the radius of the rotating disk 63. At this time, the spring 644 connected between the bracket 642 and the housing 66 is stretched to accumulate elastic potential energy. When the cam 641 continues to rotate and its protruding part no longer presses the top plate 643, the spring 644 is released, so that the bracket 642 retracts and the traction rod 645 moves outward along the radius of the rotating disk 63. 45 moves inward along the radial direction of the turntable 63, that is, the rotation of the cam 641 is converted into a linear reciprocating movement of the traction rod 645. The second funnel 646, the drop tube 647 and the bellows 648 together constitute a transitional portion for copper powder transportation between the copper source supply module 3 and the turntable 63. Since the bellows 648 is connected between the second funnel 646 and the drop tube 647, the drop tube 647 has a movable degree of freedom relative to the second funnel 646. Combined with the reciprocating movement of the traction rod 645, as shown in FIG. Fig. 9 As shown, the copper powder is scattered in a swinging manner when it falls onto the rotating disk 63.

[0046] The scraper 65 includes a rotating wheel 651, a vertical rod 652, a cross rod 653, a roller 654, a box body 655, a scraper 656 and an adapter frame 657. The rotating wheel 651 is fixedly installed on the rotating shaft 62, and the surface of the rotating wheel 651 is not perpendicular to the rotating shaft 62. The limiting blocks 660 are symmetrically fixedly installed in the shell 66. The vertical rod 652 is slidably connected with the limiting blocks 660. The vertical rod 652 is symmetrically installed with a cross rod 653. The end of the cross rod 653 is fixed with a roller 654 that cooperates with the rotating wheel 651. The box body 655 is fixedly installed above the shell 66. The scraper 656 is slidably inserted in the box body 655. The top of the scraper 656 is fixedly connected to the adapter frame 657, and the bottom of the scraper 656 is in extrusion contact with the upper surface of the turntable 63. The adapter frame 657 is fixedly connected to the top of the vertical rod 652.

[0047] In the scraper 65, the rotating shaft 62 drives the rotating wheel 651 to rotate. Since the rotating wheel 651 is installed at a certain angle relative to the rotating shaft 62, there will be reciprocating changes in height when it rotates. After the roller 654 matched with the edge of the rotating wheel 651 is squeezed by the rotating wheel 651, it drives the vertical rod 652 to reciprocate up and down through the connection of the cross bar 653, and then drives the scraper 656 to reciprocate relative to the box body 655 through the connection of the adapter frame 657. When the scraper 656 extends downward from the box body 655, the scraper 656 contacts the surface of the turntable 63 to scrape off the accumulated copper powder on the surface of the turntable 63, and when the scraper 656 retracts upward into the box body 655, the copper powder contaminated by the scraper 656 during the scraping action is blocked by the box body 655 and can be separated from the scraper 656.

[0048] The outer wall of the box body 655 is in an upwardly inclined arc shape. As the scraper 656 reciprocates up and down, when the copper powder is blocked by the box body 655 and escapes from the scraper 656, the copper powder is diffused along the arc surface, which can effectively increase the diffusion degree of the copper powder.

[0049] The copper source supply module 3 includes a feed pipe 31, an auger 32, a first funnel 33, a first motor 34 and a discharge head 35. The auger 32 is rotatably installed in the feed pipe 31. One end of the feed pipe 31 is connected to the first funnel 33, and the other end is connected to the discharge head 35. The output end of the first motor 34 is fixedly connected to the auger 32, and the mouth of the discharge head 35 is aligned with the center of the dispersion module 6.

[0050] The first negative pressure member 5 and the second negative pressure member 7 are both vacuum pumps. The first negative pressure member 5 forms a low-pressure environment in the reaction furnace 1, and the second negative pressure member 7 absorbs and collects the finished graphene copper powder.

[0051] The reactor 1 is provided with an air pressure detector 50 near the first negative pressure member 5 to provide data reference for the first negative pressure member 5 .

[0052] A retaining ring 70 is installed near the second negative pressure member 7 of the reactor 1. The inner diameter of the retaining ring 70 is smaller than the diameter of the turntable 63. After the copper powder dispersed from the turntable 63 is combined with the graphene, it is blocked by the retaining ring 70 and gathered between the retaining ring 70 and the inner wall of the reactor 1, so that the second negative pressure member 7 can absorb and collect it conveniently.

[0053] The above describes an embodiment of the present invention, but this embodiment is not limited to the above-mentioned specific implementation mode. The above-mentioned specific implementation mode is merely illustrative and not restrictive. Under the guidance of this embodiment, ordinary technicians in this field can also make more forms of equivalent embodiments, all of which are protected by this embodiment.

Claims

1. A graphene copper powder preparation device, characterized in that: The invention comprises a reaction furnace (1), a heating element (2), a copper source supply module (3), an air intake supply element (4), a first negative pressure element (5), a dispersion module (6) and a second negative pressure element (7); the outer wall of the reaction furnace (1) is covered with a heating element (2); one side of the reaction furnace (1) is connected to the copper source supply module (3) and the other side is connected to the air intake supply element (4); the first negative pressure element (5) and the second negative pressure element (7) are both connected to the reaction furnace (1); and the dispersion module (6) is provided in the reaction furnace (1); The dispersion module (6) comprises a second motor (61), a rotating shaft (62), a rotating disk (63), a blanking piece (64), a scraping piece (65) and a shell (66). The rotating shaft (62) is rotatably mounted in the reaction furnace (1). One end of the rotating shaft (62) is fixedly connected to the output end of the second motor (61), and the other end is fixedly mounted with a rotating disk (63). A blanking piece (64) is provided between the rotating disk (63) and the copper source supply module (3). A shell (66) is fixed on the inner wall of the reaction furnace (1). A scraping piece (65) is provided between the shell (66) and the rotating disk (63). The rotating shaft (62) rotates and drives the blanking piece (64) and the scraping piece (65) to move at the same time. The blanking piece (64) causes the landing point of the copper powder on the rotating disk (63) to change back and forth, and the scraping piece (65) scrapes out and diffuses the copper powder accumulated on the rotating disk (63).

2. A graphene copper powder preparation device according to claim 1, characterized in that: The blanking member (64) comprises a cam (641), a bracket (642), a top plate (643), a spring (644), a traction rod (645), a second funnel (646), a blanking pipe (647), a bellows (648) and a collar (649). The cam (641) is fixedly mounted on the rotating shaft (62). The bracket (642) is slidably mounted on one side of the housing (66). The top plate (643) is fixed on one end of the bracket (642) extending into the housing (66). The top plate (643) is fixed on the top plate (64 3) is in compression contact with the cam (641), a spring (644) is provided between the bracket (642) and the housing (66), a traction rod (645) is fixedly installed at one end of the bracket (642), a second funnel (646) is fixed in the reaction furnace (1), a bellows (648) is connected between the drop tube (647) and the bottom end of the second funnel (646), a collar (649) is fixedly sleeved on the drop tube (647), and the collar (649) is fixedly connected to the traction rod (645).

3. A graphene copper powder preparation device according to claim 1, characterized in that: The scraping member (65) comprises a rotating wheel (651), a vertical rod (652), a horizontal rod (653), a roller (654), a box body (655), a scraper (656) and an adapter frame (657); the rotating wheel (651) is fixedly mounted on the rotating shaft (62); the surface of the rotating wheel (651) is not perpendicular to the rotating shaft (62); a limiting block (660) is symmetrically fixedly mounted in the housing (66); the vertical rod (652) is slidably connected to the limiting block (660); the vertical rod (652) A cross bar (653) is symmetrically mounted on the top, a roller (654) that cooperates with the rotating wheel (651) is fixed at the end of the cross bar (653), a box body (655) is fixedly mounted above the shell (66), a scraper (656) is slidably inserted in the box body (655), the top end of the scraper (656) is fixedly connected to an adapter frame (657), the bottom end of the scraper (656) is in extrusion contact with the upper surface of the rotating disk (63), and the adapter frame (657) is fixedly connected to the top of the vertical pole (652).

4. A graphene copper powder preparation device according to claim 3, characterized in that: The outer wall of the box body (655) is in an upwardly inclined arc shape.

5. A graphene copper powder preparation device according to claim 1, characterized in that: The copper source supply module (3) comprises a feed pipe (31), an auger (32), a first funnel (33), a first motor (34) and a discharge head (35); the feed pipe (31) has an auger (32) rotatably mounted therein; one end of the feed pipe (31) is connected to the first funnel (33), and the other end is connected to the discharge head (35); the output end of the first motor (34) is fixedly connected to the auger (32); and the mouth of the discharge head (35) is aligned with the center of the dispersion module (6).

6. A graphene copper powder preparation device according to claim 1, characterized in that: The first negative pressure member (5) and the second negative pressure member (7) are both vacuum pumps; the first negative pressure member (5) forms a low-pressure environment in the reaction furnace (1); and the second negative pressure member (7) absorbs and collects the finished graphene copper powder.

7. A graphene copper powder preparation device according to claim 1, characterized in that: The reaction furnace (1) is provided with an air pressure detector (50) near the first negative pressure member (5).

8. A graphene copper powder preparation device according to claim 1, characterized in that: A material blocking ring (70) is installed on the reaction furnace (1) near the second negative pressure member (7), and the inner diameter of the material blocking ring (70) is smaller than the diameter of the rotating disk (63).

9. A graphene copper powder preparation device according to claim 1, characterized in that: The gas supply component (4) selects methane as the carbon source and introduces it into the reaction furnace (1) together with the protective gas argon and the reducing gas hydrogen.

10. The graphene copper powder preparation device according to claim 1, characterized in that: The heating element (2) is selected to be a heating coil.

Images