CN218579654U - Equipment for preparing graphene powder by bubble chemical vapor deposition method - Google Patents
Equipment for preparing graphene powder by bubble chemical vapor deposition method Download PDFInfo
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- CN218579654U CN218579654U CN202121678138.9U CN202121678138U CN218579654U CN 218579654 U CN218579654 U CN 218579654U CN 202121678138 U CN202121678138 U CN 202121678138U CN 218579654 U CN218579654 U CN 218579654U
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Abstract
The utility model relates to a graphite alkene preparation technical field relates to a bubble chemical vapor deposition method prepares equipment of graphite alkene powder. It includes: a sealed cavity, wherein a heating device for heating copper to a molten state is arranged in the cavity; the cavity is connected with a gas inlet device, and the gas inlet device leads the hydrocarbon mixed gas into the heating device; one side of the cavity is connected with a collecting device, and the collecting device is used for collecting graphene; the cavity is also connected with a cooling device for cooling the gas mixture generated by the reaction. The utility model introduces hydrocarbon gas into the heating device through the gas inlet device, and the hydrocarbon gas is contacted with molten copper in the heating device to decompose and form carbon atoms; the carbon atoms are accumulated to form graphene and enter a collecting device along with the gas flow and are collected, so that the graphene can be continuously produced.
Description
Technical Field
The utility model relates to a graphite alkene preparation technical field relates to a bubble chemical vapor deposition method prepares equipment of graphite alkene powder.
Background
The main methods for preparing graphene at present include a mechanical lift-off method, an epitaxial growth method, a redox method, and a chemical vapor deposition method. The chemical vapor deposition method takes a copper foil as a catalyst, and methane gas is introduced to the surface of the high-temperature copper foil, so that the graphene film is deposited on the surface of the copper foil. The chemical vapor deposition method takes copper foil as a catalyst, and carbon source gas is introduced to the surface of the high-temperature copper foil, so that the graphene film is deposited on the surface of the copper foil. However, the yield of graphene prepared by the CVD method is limited by the surface area of the copper foil, the copper foil cannot be recycled, continuous production is difficult, and the production cost is high. In this regard, researchers improved the CVD process, and wo of the university of electronic technology, dongyang, 2017 proposed an improved CVD process, namely bubble Chemical Vapor Deposition (B-CVD). The method directly introduces hydrocarbon gas into molten copper to form bubbles containing the hydrocarbon gas. The hydrocarbon gas is decomposed into carbon atoms on the surface of the bubbles, the carbon atoms are assembled into graphene on the surface of the bubbles and reach the surface of the molten copper along with the bubbles, and the graphene is finally separated from the surface of the molten copper under the action of the bubbles and enters a collector. With continuous generation of bubbles, continuous growth of graphene is realized. However, no equipment is available for actual production at present.
Disclosure of Invention
An object of the utility model is to provide an equipment of graphite alkene powder is prepared to bubble chemical vapor deposition method to prior art not enough, this equipment can carry out actual continuous production.
An equipment for preparing graphene powder by a bubble chemical vapor deposition method comprises the following steps: a sealed cavity, wherein a heating device for heating copper to a molten state is arranged in the cavity; the cavity is connected with a gas inlet device, and the gas inlet device leads the hydrocarbon mixed gas into the heating device; one side of the cavity is connected with a collecting device, and the collecting device is used for collecting graphene generated by the reaction of the mixed gas.
Preferably, the chamber is further connected with a cooling device for cooling the gas mixture generated by the reaction.
Further, cooling device includes water cooling plant, and water cooling plant includes water cooling source, circulating pipe and water pump, and the circulating pipe is including twining the water cooling section in the cavity upper end, and the water cooling section is used for cooling down the gas mixture that gets into collection device.
Furthermore, the cavity comprises a cavity body and a cover body, a support is connected in the cavity body, the support comprises a connecting arm connected with the cavity body and a bearing plate connected with the connecting arm, an upper through hole is formed in the middle of the bearing plate, the cooling device comprises a pipe body in the middle, the upper end of the pipe body is connected with the bearing plate, a middle through hole is formed in the middle of the bearing plate, and an upper through hole is formed in the cover plate; the air inlet device comprises an air inlet pipe, and the air inlet pipe sequentially penetrates through the upper through hole, the middle through hole and the pipe body; the side surface of the pipe body is connected with guide blades which are spirally arranged; and the side wall of the cavity is provided with an air outlet which is positioned at one side of the upper end of the guide vane.
Further, the middle part cover of body is equipped with hollow inner bag, and the middle part side of inner bag is equipped with the ring channel, and the up end of inner bag is equipped with the breach, the middle part cover of inner bag is equipped with the cooling tube of spiral setting, and the upper end of cooling tube passes the breach and stretches out and be connected with coolant liquid circulating device from the last perforation of lid.
Further, the cavity is connected with a vacuum pumping device.
Further, the cavity is provided with an observation window.
Further, the heating device comprises a crucible, and a heating coil and a temperature sensor are arranged outside the crucible; the cavity is provided with an inlet window and is connected with an end cover matched with the inlet window.
Further, the air inlet device also comprises an aerator arranged at the lower end of the air inlet pipe.
Further, the air inlet pipe is connected with a barometer.
Further, the air inlet unit further comprises a lifting mechanism for driving the air inlet pipe to lift, and the lifting mechanism comprises: the base that is fixed in the cavity is connected with the supporting shoe, and the supporting shoe is connected with the linear module that is vertical setting, and linear module is connected with the connecting seat, intake pipe and connecting seat fixed connection.
Furthermore, a fastening structure is arranged between the cover body and the cavity body; the fastening structure comprises an upper fastening block arranged on the cover body, the upper fastening block extends out of the cover body and is provided with a movable groove with an opening on the side surface; the cavity body is connected with a fixing lug, the fixing lug is hinged with an adjusting rod capable of moving into the movable groove, and one end of the adjusting rod is in threaded connection with a fastening cap.
Preferably, be equipped with seal structure between lid and the chamber body, seal structure is equipped with the sealing washer including setting up the seal groove at the lid in the seal groove.
Furthermore, the cavity is provided with a jacking device for jacking the cover body, the jacking device comprises a jacking block connected with the cover body or the base, the cavity body is connected with a supporting seat, the supporting seat is connected with a guide cylinder, a jacking rod is sleeved in the guide cylinder, and the jacking block is provided with a jack matched with the jacking rod; the lower end of the ejector rod is connected with a lifting driving mechanism for driving the ejector rod to lift.
Further, the collecting device comprises a collecting pipe connected with the cavity, and the tail end of the collecting pipe is connected with an air exhaust device; the lower extreme of collecting pipe is connected with a plurality of receiving hoppers, and the lower extreme of receiving hopper is connected with the material collecting container. Preferably, the material receiving valve is arranged between the material receiving container and the material receiving hopper.
Preferably, the feeding end of the collecting pipe is connected with a feeding valve and a barometer.
The invention has the beneficial effects that: the invention introduces hydrocarbon gas into a heating device through an air inlet device, and the hydrocarbon gas is contacted with molten copper in the heating device to be decomposed to form carbon atoms; the carbon atoms are accumulated to form graphene and enter a collecting device along with the gas flow and are collected, so that the graphene can be continuously produced.
Drawings
Fig. 1 is a schematic diagram of the present embodiment.
Fig. 2 is a second schematic diagram of the embodiment.
Fig. 3 is another view of fig. 2.
Fig. 4 is a schematic view of a portion of the chamber of fig. 1.
Fig. 5 is a schematic cross-sectional view of fig. 4.
Fig. 6 is a schematic view of the heating device and the cooling device in cooperation.
Fig. 7 is a schematic view of a cooling device.
Fig. 8 is a cross-sectional view of fig. 7.
Fig. 9 is a schematic view of a cooling tube.
The reference signs are:
1-a cavity; 11-cover; 12-the body of the cavity; 13-connecting arm; 14-bearing plate; 15-air outlet; 16-observation window; 17-end cap;
2-air intake device; 21-a supporting block; 22-a connecting seat; 23-inlet pipe; 24-aerator; 25-a base; 26-Linear Module;
3-a heating device; 31-heating coil; 32-crucible; 33-thermally insulating shell;
4-a collecting device; 41-a collection tube; 42-receiving hopper; 43-receiving container; 44-air extraction means; 45-a take-up valve; 46-barometer; 47-a feed valve;
5-fastening structure; 51-upper fastening block; 52-active slot; 53-fastening cap; 54-adjusting lever; 55-fixing ear;
6-jacking device; 61-top block; 62-a mandril; 63-support seat; 64-guide cylinder; 65-lifting driving mechanism;
7-a cooling device; 71-guide vanes; 72-a tube body; 73-cooling tube; 74-inner bladder;
8-vacuum pumping device; 81-barometer; 82-air extraction duct.
Detailed Description
The following detailed description of the present invention is made with reference to the accompanying drawings. As shown in fig. 1-9.
Example 1: see fig. 1-5; an equipment for preparing graphene powder by a bubble chemical vapor deposition method comprises the following steps: a sealed cavity 1, wherein a heating device 3 for heating copper to a molten state is arranged in the cavity 1; the cavity 1 is connected with an air inlet device 2, and the air inlet device 2 leads hydrocarbon mixed gas into a heating device 3; one side of the cavity 1 is connected with a collecting device 4, and the collecting device 4 is used for collecting graphene generated by reacting mixed gas. Preferably, the chamber 1 is also connected to cooling means 7 for cooling the gas mixture produced by the reaction.
The technical scheme is characterized in that the production method of the graphene is industrialized; during the production process, copper particles or copper powder and the like can be placed into the heating device 3 to form molten copper liquid; then the hydrocarbon gas of the gas source is introduced into the molten copper through the gas inlet device 2, and the production mode 1: forming bubbles in molten copper by gas, decomposing and assembling hydrocarbon gas to form graphene, and forming and growing the graphene on the surface of the copper; 2: the hydrocarbon gas is decomposed in the melting cylinder, and carbon atoms are polymerized on the surface of copper to generate graphene. Simultaneously the airflow carries the graphene away from the copper surface into the collection device 4.
The applicant tests the graphene after collecting the graphene; the graphene is found to contain a trace amount of copper; at a later stage the applicant may separate the copper by some technical means. However, the operation increases the working procedure and reduces the production efficiency; for this reason, the applicant consults the related technical literature and does not find a scheme for further purifying graphene while collecting. The applicant has therefore tried to design a cooling device 7, which has been found to condense the copper in the early stage, so as to effectively reduce the copper content, and the gas source can be compressed gas in steel bottles, or other ways.
Further, cooling device 7 includes water cooling plant, and water cooling plant includes water-cooling source, circulating pipe and water pump, and the circulating pipe is including twining the water-cooling section in cavity 1 upper end, and the water-cooling section is used for cooling down the gas mixture that gets into collection device 4. The water cooling device can adopt the prior art, the water pump pumps water of a water cooling source into the circulating pipe, and the water flows in the circulating pipe and returns to the water cooling source; the water cooling section of the circulating pipe cools the upper end of the cavity 1, so that the cavity 1 is in a lower temperature state in the surrounding area of the connecting part of the cavity 1 and the collecting device 4, the temperature is lower than the boiling point of copper, and copper steam is condensed into copper water drops which are adhered to the side wall of the cavity 1; in practice, of course, the temperature of the chamber 1 around the connection with the collecting device 4 can be made lower, and the copper vapor is directly condensed into copper particles attached to the side wall of the chamber 1. When the cooling device is arranged, the circulating pipe of the cooling device is arranged at the upper end of the cavity, an interlayer is arranged at the joint of the cover body, the cavity and the collecting device, and the circulating pipe for water cooling is arranged in the interlayer.
Further, the cavity 1 includes a cavity body 12 and a cover body 11, a bracket is connected in the cavity body 12, the bracket includes a connecting arm 13 connected with the cavity body 12 and a receiving plate 14 connected with the connecting arm 13, an upper through hole is arranged in the middle of the receiving plate 14, see fig. 7 and 8; the cooling device 7 comprises a pipe body 72 at the middle part, the upper end of the pipe body 72 is connected with the bearing plate 14, a middle through hole is arranged at the middle part of the bearing plate 14, and an upper through hole is arranged on the cover plate; the air inlet device 2 comprises an air inlet pipe 23, and the air inlet pipe 23 sequentially penetrates through the upper through hole, the middle through hole and the pipe body 72; the side surface of the pipe body 72 is connected with a guide vane 71 which is spirally arranged; the side wall of the cavity 1 is provided with an air outlet 15, and the air outlet 15 is positioned at one side of the upper end of the guide vane 71.
The technical proposal combines the air inlet pipe 23 of the air inlet device 2 and the cooling device 7 into a whole; the pipe body 72 of the cooling device 7 can be connected with the socket plate 14 by screws; the mixed gas carries graphene and copper vapor, the mixed gas gradually moves upwards spirally along the guide vane 71, in the moving process, the guide vane 71 and the mixed gas are subjected to heat exchange, namely, the mixed gas is cooled, and the copper vapor is condensed or solidified on the surface of the guide vane 71 to form copper liquid drops or copper particles; the primary filtering and cooling effect is achieved; in this process, the cooling device 7 also exchanges heat with the intake pipe 23; when the hydrocarbon mixed gas enters the heating device 3 from the gas pipe, the gas pipe exchanges heat with the hydrocarbon mixed gas; this process is equivalent to: the reacted mixed gas exchanges heat with the hydrocarbon mixed gas through a cooling device 7 and a gas pipe; along with the reaction, the hydrocarbon mixed gas is automatically cooled by the cooling device 7 when entering the reaction, so as to achieve the effect of cooling and filtering; secondly, the hydrocarbon gas mixture is heated to high temperature in the process, and relatively absorbs less heat when entering molten copper, so that the effect of saving energy can be achieved.
Referring to fig. 8, further, a hollow inner container 74 is sleeved in the middle of the pipe 72, an annular groove is formed in a side surface of the middle of the inner container 74, a gap is formed in an upper end surface of the inner container 74, a cooling pipe 73 spirally arranged is sleeved in the middle of the inner container 74, and an upper end of the cooling pipe 73 penetrates through the gap and extends out of an upper through hole of the cover 11 and is connected with a cooling liquid circulating device.
In the test process, the mixed gas needing to be fed is found to be insufficient for cooling the reacted mixed gas to the preset temperature, the design scheme is provided with a circulating cooling structure, the cooling pipe 73 is a pipe which is bent into two half pipes from the middle part and is sleeved outside the pipe body 72 after being spirally bent; in order to further improve the heat exchange efficiency, the annular groove can be slowly filled with heat-conducting glue through the gap, and other heat-conducting objects can be filled; secondly, in order to measure the temperature of the guide vane 71 conveniently, the observation window 16 is arranged in the cavity 1, and the guide vane 71 is measured by an infrared thermometer or other thermometers. The cooling liquid circulating device can be the prior art, for example, the cooling liquid circulating device comprises a tank body for containing cooling liquid, a pump body is arranged in the tank body, one end of a cooling pipe 73 is connected with the tank body through a pipeline, and the other end of the cooling pipe 73 is connected with the pump body through a pipeline; preferably, the tank body is connected with a heat dissipation device or a refrigeration device for cooling the tank body.
Further, the cavity 1 is connected with a vacuum pumping device 8.
In the reaction, in order to prevent the influence of air, the technical scheme is provided with a vacuumizing device 8, the inside of the reaction is vacuumized before the reaction, and then protective gas is filled in the reaction kettle through the gas inlet device 2 and is recovered to the normal pressure. When the device is specifically arranged, the cavity 1 is connected with an air exhaust pipeline 82, and the air exhaust pipeline 82 is connected with an air pressure gauge 81 and a valve; a vacuum pump is connected to the end of the evacuation device 44.
Referring to fig. 4, further, the chamber 1 is provided with a viewing window 16.
For convenient observation, the cavity 1 is provided with an observation window 16 for convenient observation of internal changes.
Referring to fig. 5, further, the heating device 3 includes a crucible 32, and a heating coil 31 and a temperature sensor are arranged outside the crucible 32; referring to fig. 2, the chamber 1 is provided with an inlet window and is connected with an end cover 17 matched with the inlet window.
The heating coil 31 may be an induction coil, the wiring of which is led out from the proceeding window, and the temperature sensor is also led out from the incoming window. Preferably, the heating coil 31 is sheathed with a heat insulating housing 33. The electric heating device 3 can also adopt a medium-frequency induction melting furnace and the like.
Further, the air intake device 2 further includes an aerator 24 disposed at a lower end of the air intake pipe 23.
After the aerator 24 is arranged, the bubble diameter is small, the gas-liquid interface area is large, the bubbles are uniformly diffused, the blockage of holes cannot be generated, and the corrosion resistance is high.
Further, a barometer is connected to the intake pipe 23.
Further, the air intake device 2 further includes a lifting mechanism for driving the air intake pipe 23 to lift, the lifting mechanism includes: be fixed in the base 25 of cavity 1, base 25 is connected with supporting shoe 21, and supporting shoe 21 is connected with and is the linear module 26 of vertical setting, and linear module 26 is connected with connecting seat 22, intake pipe 23 and connecting seat 22 fixed connection.
The air inlet pipe 23 is positioned above the heating device 3 before work, when the copper is in a molten state, the air inlet pipe 23 enters under the driving of the linear module 26, and the lower end of the air inlet pipe 23 enters the molten copper; when finished, leaves the heating device 3 driven by the linear module 26. The linear die set 26 may be a pneumatic cylinder, lead screw nut, or the like.
See fig. 3; further, a fastening structure 5 is arranged between the cover body 11 and the cavity body 12; the fastening structure 5 comprises an upper fastening block 51 arranged on the cover body 11, wherein the upper fastening block 51 extends out of the cover body 11 and is provided with a movable groove 52 with an opening on the side surface; the cavity body 12 is connected with a fixing lug 55, the fixing lug 55 is hinged with an adjusting rod 54 which can move into the movable groove 52, and one end of the adjusting rod 54 is connected with a fastening cap 53 through threads.
During production, the cavity 1 is at high temperature, and the internal air pressure is higher; in order to connect the cavity body 12 and the cover body 11 tightly, the technical scheme is provided with a fastening structure 5; the fastening connection adopts an adjustable structure; the position of the fastening cap 53 is adjusted by rotating the fastening cap 53, and the cover body 11 is tightly connected with the cavity body 12 by the compression between the fastening cap 53 and the upper fastening block 51.
Preferably, a sealing structure is arranged between the cover body 11 and the cavity body 12, and the sealing structure includes a sealing groove arranged on the cover body 11, and a sealing ring is arranged in the sealing groove.
By providing the sealing structure, the gas inside the seal leaks.
Further, the cavity 1 is provided with a jacking device 6 for jacking the cover body 11, the jacking device 6 comprises a jacking block 61 connected with the cover body 11 or the base 25, the cavity body 12 is connected with a supporting seat 63, the supporting seat 63 is connected with a guide cylinder 64, a jacking rod 62 is sleeved in the guide cylinder 64, and the jacking block 61 is provided with an insertion hole matched with the jacking rod 62; the lower end of the jack 62 is connected to a lift driving mechanism 65 for driving the jack 62 to move up and down.
By arranging the jacking device 6, the cover body 11 can be conveniently jacked up when the cover body 11 is opened, and the operation is convenient.
The elevation drive mechanism 65 may be a hydraulic cylinder, a cam mechanism, or the like. Secondly, the guide cylinder 64 is provided with internal threads, the ejector rod 62 is in threaded connection with the guide cylinder 64, and the lifting driving mechanism 65 is a rotary driving mechanism and drives the guide rod to rotate; the guide rod rotates and lifts at the same time. In this case, the rotation driving mechanism may be a motor and a transmission mechanism, and the transmission mechanism includes a gear transmission mechanism, a belt transmission mechanism, and the like.
Further, the collecting device 4 comprises a collecting pipe 41 connected with the cavity 1, and the tail end of the collecting pipe 41 is connected with an air extracting device 44; a plurality of receiving hoppers 42 are connected to the lower end of the collecting pipe 41, and a receiving container 43 is connected to the lower end of the receiving hopper 42. Preferably, the receiving container 43 is provided with a receiving valve 45 between the receiving hoppers 42.
Preferably, a feed valve 47 and a barometer 46 are connected to the feed end of the collection pipe 41.
The collecting device 4 forms negative pressure inside through the air extracting device 44, extracts the gas mixture in the cavity 1, and after the gas mixture enters the collecting pipe 41, the graphene is precipitated in the collecting pipe 41 and moves along with the air flow, and then enters each receiving hopper 42; when the collecting container is to be fully loaded, the material collecting valve 45 is closed, and then the material collecting container 43 is replaced. Secondly, in the initial stage of material collection, in order to prevent the material collecting device from influencing the vacuum degree of the cavity 1, a feed valve 47 is arranged at the front end of the collecting pipe 41; second, to facilitate adjustment of the collection rate, i.e., the rate of evacuation, applicants have set the barometer 46 to observe the air flow rate. Of course, the air pressure gauge 46 may be replaced with an air flow gauge.
The collecting pipe 41 includes a plurality of horizontal sections and a plurality of vertical sections, and the lower end of at least one of the vertical sections is connected to the collecting hopper 42.
As shown in fig. 1 and 2, when the collecting pipe 41 is specifically arranged, at least one horizontal section and at least one vertical section may be provided; upon collection, the graphene moves with the gas stream; in the moving process, the receiving hoppers connected with the horizontal section can be deviated or avoided and cannot be collected, in order to reduce or avoid the situation, the applicant sets the receiving hopper 42 at the lower end of the vertical section, and the part of graphene falls into the receiving hopper 42 when moving through the vertical section.
The above description is only a preferred embodiment of the present invention, and for those skilled in the art, there are variations on the detailed description and the application scope according to the idea of the present invention, and the content of the present description should not be interpreted as a limitation to the present invention.
Claims (13)
1. The utility model provides an equipment of graphite alkene powder is prepared to bubble chemical vapor deposition method which characterized in that: comprises a sealed cavity, wherein a heating device for heating copper to a molten state is arranged in the cavity; the cavity is connected with a gas inlet device, and the gas inlet device leads the hydrocarbon mixed gas into the heating device; one side of the cavity is connected with a collecting device, and the collecting device is used for collecting graphene generated by the reaction of the mixed gas.
2. The apparatus for preparing graphene powder by a bubble chemical vapor deposition method according to claim 1, wherein: the cavity is also connected with a cooling device for cooling the gas mixture generated by the reaction.
3. The apparatus for preparing graphene powder according to claim 2, wherein the apparatus comprises: the cooling device comprises a water cooling device, the water cooling device comprises a water cooling source, a circulating pipe and a water pump, the circulating pipe comprises a water cooling section wound on the upper end of the cavity, and the water cooling section is used for cooling a gas mixture entering the collecting device.
4. The apparatus for preparing graphene powder by a bubble chemical vapor deposition method according to claim 2, wherein: the cooling device comprises a pipe body in the middle, the upper end of the pipe body is connected with the bearing plate, a middle through hole is formed in the middle of the bearing plate, and an upper through hole is formed in the cover plate; the air inlet device comprises an air inlet pipe, and the air inlet pipe sequentially penetrates through the upper through hole, the middle through hole and the pipe body; the side surface of the pipe body is connected with guide blades which are spirally arranged; and the side wall of the cavity is provided with an air outlet which is positioned at one side of the upper end of the guide vane.
5. The apparatus for preparing graphene powder by using the bubble chemical vapor deposition method according to claim 4, wherein: the middle part cover of body is equipped with hollow inner bag, and the middle part side of inner bag is equipped with the ring channel, and the up end of inner bag is equipped with the breach, the middle part cover of inner bag is equipped with the cooling tube of spiral setting, and the upper end of cooling tube passes the breach and stretches out and be connected with coolant liquid circulating device from the last perforation of lid.
6. The apparatus for preparing graphene powder by a bubble chemical vapor deposition method according to claim 1, wherein: the heating device comprises a crucible, and a heating coil and a temperature sensor are arranged outside the crucible; the cavity is provided with an inlet window and is connected with an end cover matched with the inlet window.
7. The apparatus for preparing graphene powder by using the bubble chemical vapor deposition method according to claim 4, wherein: the air inlet device also comprises an aerator arranged at the lower end of the air inlet pipe.
8. The apparatus for preparing graphene powder according to claim 4, wherein the apparatus comprises: air inlet unit still includes the elevating system who is used for driving the intake pipe lift, elevating system includes: the base that is fixed in the cavity is connected with the supporting shoe, and the supporting shoe is connected with the linear module that is vertical setting, and linear module is connected with the connecting seat, intake pipe and connecting seat fixed connection.
9. The apparatus for preparing graphene powder by using the bubble chemical vapor deposition method according to claim 4, wherein: a fastening structure is arranged between the cover body and the cavity body; the fastening structure comprises an upper fastening block arranged on the cover body, the upper fastening block extends out of the cover body and is provided with a movable groove with an opening on the side surface; the cavity body is connected with a fixing lug, the fixing lug is hinged with an adjusting rod capable of moving into the movable groove, and one end of the adjusting rod is in threaded connection with a fastening cap.
10. The apparatus for preparing graphene powder by using the bubble chemical vapor deposition method according to claim 4, wherein: the cavity is provided with a jacking device for jacking the cover body, the jacking device comprises a jacking block connected with the cover body or the base, the cavity body is connected with a supporting seat, the supporting seat is connected with a guide cylinder, a jacking rod is sleeved in the guide cylinder, and the jacking block is provided with a jack matched with the jacking rod; the lower end of the ejector rod is connected with a lifting driving mechanism for driving the ejector rod to lift.
11. The apparatus for preparing graphene powder according to claim 1, wherein the apparatus comprises: the collecting device comprises a collecting pipe connected with the cavity, and the tail end of the collecting pipe is connected with an air extracting device; the lower extreme of collecting pipe is connected with a plurality of receiving hoppers, and the lower extreme of receiving hopper is connected with the material collecting container.
12. The apparatus for preparing graphene powder by bubble chemical vapor deposition according to claim 11, wherein: the collecting pipe comprises a plurality of horizontal sections and a plurality of vertical sections, and the lower end of at least one of the vertical sections is connected with the collecting hopper.
13. The apparatus for preparing graphene powder by bubble chemical vapor deposition according to claim 11 or 12, wherein: a material receiving valve is arranged between the collecting pipe and the material receiving hopper.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116177537A (en) * | 2023-04-28 | 2023-05-30 | 厦门凯纳石墨烯技术股份有限公司 | High-quality graphene powder growth and synchronous hydrogen production method and device |
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2021
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116177537A (en) * | 2023-04-28 | 2023-05-30 | 厦门凯纳石墨烯技术股份有限公司 | High-quality graphene powder growth and synchronous hydrogen production method and device |
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