CN107555421A - A kind of graphene growth protection device - Google Patents
A kind of graphene growth protection device Download PDFInfo
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- CN107555421A CN107555421A CN201711043572.8A CN201711043572A CN107555421A CN 107555421 A CN107555421 A CN 107555421A CN 201711043572 A CN201711043572 A CN 201711043572A CN 107555421 A CN107555421 A CN 107555421A
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- quartz ampoule
- heater
- limited block
- protection device
- graphene growth
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Abstract
The invention discloses a kind of graphene growth protection device, including base, the upper end of the base is fixed with body of heater, the inside of the body of heater is provided with cavity, heater is sequentially provided with from top to bottom in the cavity, heat transfer meshes and cooler, the inside of the heater is provided with quartz ampoule, the both ends of the quartz ampoule through heater and are connected to vacuum flange and adpting flange, the one end of the adpting flange away from quartz ampoule is communicated with appendix, cooling gas outlet pipe, cooling gas inlet pipe and pressure gauge, the both ends of the quartz ampoule are arranged with the first installing plate and the second installing plate, the both sides of the body of heater are fixed with supporting plate by lock-screw, the upper end of two supporting plates is respectively and fixedly provided with mounting bracket.The graphene growth protection device cooling protection measure is perfect, improves the quality of graphene, and quartz ampoule convenient disassembly, reduces cleaning difficulty, reduces the work load of staff.
Description
Technical field
The present invention relates to graphene production technical field, more particularly to a kind of graphene growth protection device.
Background technology
Graphene is inherently present in nature, is simply difficult to separate single layer structure.Graphene gathers into folds just from level to level
It is graphite, thick 1 millimeter graphite comprises about 3,000,000 layer graphenes.Pencil gently streaks on paper, and the vestige left may
It is several layers of or even bidimensional cycle honeycomb lattice structure that only a layer graphene graphene is made up of carbon hexatomic ring, it can be with
The fullerene of zero dimension is warped into, one-dimensional CNT is rolled into or is stacked to the graphite of three-dimensional, therefore graphene is to form it
The elementary cell of his graphite material, the basic structural unit of graphene is most stable of benzene hexatomic ring in organic material, is current
Optimal two-dimension nano materials, preferable graphene-structured be plane hexagonal lattice, can be regarded as one layer and is stripped
Graphitic molecules, each carbon atom are sp2 hydridization, and contribute the big pi bond that electronically forms on a remaining p track, and pi-electron can be with
Move freely, assign graphene good electric conductivity, it is to form all sp2 hydridization carbonaceous materials that two-dimensional graphene structure, which can be seen,
Basic component units.But safeguard measure imperfection during existing graphene growth, graphene performance is influenceed, and in quartz
Graphene growth work is carried out in pipe, but quartz ampoule dismounting is cumbersome, causes cleaning difficult, increases the work load of staff.
The content of the invention
The invention aims to solve the problem of safeguard measure imperfection in the prior art, quartz ampoule dismounting is cumbersome,
A kind of and graphene growth protection device proposed.
To achieve these goals, present invention employs following technical scheme：
A kind of graphene growth protection device, including base, the upper end of the base are fixed with body of heater, and the inside of the body of heater is set
There is cavity, be sequentially provided with heater, heat transfer meshes and cooler in the cavity from top to bottom, the inside of the heater is provided with stone
Ying Guan, the both ends of the quartz ampoule through heater and are connected to vacuum flange and adpting flange, the adpting flange
One end away from quartz ampoule is communicated with appendix, cooling gas outlet pipe, cooling gas inlet pipe and pressure gauge, and the two of the quartz ampoule
End is arranged with the first installing plate and the second installing plate, and the both sides of the body of heater are fixed with supporting plate by lock-screw, two
The upper end of the supporting plate is respectively and fixedly provided with mounting bracket, and the upper end of two mounting brackets is socketed in the both ends of quartz ampoule respectively, two
It is equipped with connecting rod between the mounting bracket and the first installing plate, the second installing plate, the both ends of the connecting rod are arranged limited
Position device.
Preferably, the stopping means includes the first limiting plate and the second limiting plate, first limiting plate and the second limit
Position plate is provided with rubber slab close to the side of connecting rod, and the both ends of first limiting plate and the second limiting plate are respectively equipped with the first limit
Position block and the second limited block, is provided with gag lever post between first limited block and the second limited block, first limited block and the
The inside of two limited blocks is equipped with screw corresponding with gag lever post, and screw thread in opposite direction is respectively equipped with two screws,
The both ends of the gag lever post extend through two screws, and are screw thread between gag lever post and the first limited block, the second limited block
Connection.
Preferably, the inside of the supporting plate is provided with groove, is provided with fix bar in the groove, on the groove madial wall
Provided with the internal thread being threadedly coupled with fix bar, the lower end of the fix bar through groove and is connected with fixed block, the fixation
Spring is provided between block and supporting plate, groove is run through at the both ends of the fix bar, and the upper end of fix bar is arranged with rubber ring,
It is rotatablely connected between the lower end of the fix bar and fixed block.
Preferably, the cooler is fixed in the bottom side wall in cavity by lock-screw.
Preferably, it is equipped with valve on the appendix, cooling gas outlet pipe and cooling gas inlet pipe.
Preferably, the lower end of the base is provided with walking mechanism, and the walking mechanism uses universal wheel.
In the present invention, the graphene growth protection device realizes overall movement by the walking mechanism of base lower end, makes
Device is applied to different work sites, improves the utilization rate of device, after reaching appointed place, rotates fix bar, makes fixed block
Move down, promote fixed block and point contact, the position restriction of finishing device, ensure stability during work, it is necessary to move
When, rotate backward fix bar, fixed block pull-up is moved easily, grapheme material is entered into quartz ampoule by appendix by spring
It is interior, by heater in quartz ampoule external heat, the raising of quartz ampoule internal temperature is realized, reaches the temperature of graphene growth needs
The growth of graphene is completed in degree, heating, is closed heater, is cooled down by cooler, and heat transfer meshes realize adding for cooling velocity
It hurry up, while by the way that cooling gas is entered in quartz ampoule from cooling gas inlet pipe, complete cooling gas from cooling gas outlet pipe and exist
Cooling circulation in quartz ampoule, accelerates cooling velocity, precipitates graphene, and pressure gauge can realize the pressure monitoring in quartz ampoule,
Ensure that the safety of quartz ampoule, it is necessary to when clearing up quartz ampoule, rotary spacing bar, makes the first limited block and the same time shift of the second limited block
It is dynamic, make the fixation of the first limiting plate and the release of the second limiting plate to connecting rod, connecting rod is detached, facilitates the dismounting of quartz ampoule,
Make cleaning simple.The graphene growth protection device cooling protection measure is perfect, improves the quality of graphene, and quartz ampoule is dismantled
It is convenient, cleaning difficulty is reduced, reduces the work load of staff.
Brief description of the drawings
Fig. 1 is a kind of structural representation of graphene growth protection device proposed by the present invention；
Fig. 2 is structural representation at a kind of A of graphene growth protection device proposed by the present invention；
Fig. 3 is a kind of limit device structure schematic diagram of graphene growth protection device proposed by the present invention.
In figure：1 walking mechanism, 2 bases, 3 coolers, 4 heat transfer meshes, 5 supporting plates, 6 fix bars, 7 fixed blocks, 8 springs, 9
Rubber ring, 10 mounting brackets, 11 vacuum flanges, 12 quartz ampoules, 13 appendixs, 14 adpting flanges, 15 cooling gas outlet pipes, 16 coolings
Gas inlet pipe, 17 valves, 18 pressure gauges, 19 heaters, 20 bodies of heater, 21 first installing plates, 22 connecting rods, 23 stopping means, 24
First limiting plate, 25 second limiting plates, 26 first limited blocks, 27 second limited blocks, 28 gag lever posts, 29 rubber slabs, 30 second peaces
Loading board.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, rather than whole embodiments.
In the description of the invention, it is to be understood that term " on ", " under ", "front", "rear", "left", "right", " top ",
The orientation or position relationship of the instruction such as " bottom ", " interior ", " outer " are based on orientation shown in the drawings or position relationship, merely to just
In the description present invention and simplify description, rather than instruction or imply signified device or element must have specific orientation, with
Specific azimuth configuration and operation, therefore be not considered as limiting the invention.
Reference picture 1-2, a kind of graphene growth protection device, including base 2, the upper end of base 2 are fixed with body of heater 20, stove
The inside of body 20 is provided with cavity, is sequentially provided with heater 19, heat transfer meshes 4 and cooler 3 in cavity from top to bottom, heater 19
Inside is provided with quartz ampoule 12, and the both ends of quartz ampoule 12 through heater 19 and are connected to vacuum flange 11 and adpting flange
14, the one end of adpting flange 14 away from quartz ampoule 12 be communicated with appendix 13, cooling gas outlet pipe 15, cooling gas inlet pipe 16 with
Pressure gauge 18, heater 19 is closed, is cooled down by cooler 3, heat transfer meshes 4 realize the quickening of cooling velocity, pass through simultaneously
Cooling gas is entered in quartz ampoule 12 from cooling gas inlet pipe 16, cooling gas is completed in quartz ampoule from cooling gas outlet pipe 15
Cooling circulation in 12, accelerates cooling velocity, precipitates graphene, and pressure gauge 18 can realize the pressure monitoring in quartz ampoule 12,
Ensure the safety of quartz ampoule 12, grapheme material is entered in quartz ampoule 12 by appendix 13, by heater 19 in quartz ampoule
12 external heats, the raising of the internal temperature of quartz ampoule 12 is realized, reach the temperature of graphene growth needs, graphene is completed in heating
Growth, the both ends of quartz ampoule 12 are arranged with the first installing plate 21 and the second installing plate 30, and the both sides of body of heater 20 pass through locking
Screw is fixed with supporting plate 5, and the upper end of two supporting plates 5 is respectively and fixedly provided with mounting bracket 10, and the upper end difference of two mounting brackets 19
The both ends of quartz ampoule 12 are socketed in, connecting rod is equipped between two installing plates 21 of mounting bracket 19 and first, the second installing plates 30
22, the both ends of connecting rod 22 are arranged with stopping means 2.
In the present invention, stopping means 23 includes the first limiting plate 24 and the second limiting plate 25, the first limiting plate 24 and second
Limiting plate 25 is provided with rubber slab 29 close to the side of connecting rod 22, and the both ends of the first limiting plate 24 and the second limiting plate 25 are set respectively
There are the first limited block 26 and the second limited block 27, be provided with gag lever post 28 between the first limited block 26 and the second limited block 27, first
Limited block 26 and the inside of the second limited block 27 be equipped with 28 corresponding screw of gag lever post, be respectively equipped with direction in two screws
Opposite screw thread, the both ends of gag lever post 28 extend through two screws, and the limited block 26 of gag lever post 28 and first, the second limited block
It is to be threadedly coupled, it is necessary to when clearing up quartz ampoule 12 between 27, rotary spacing bar 28, makes the first limited block 26 and the second limited block
27 is simultaneously mobile, the first limiting plate 24 is unclamped the fixation to connecting rod 22 with the second limiting plate 25, connecting rod 22 is detached, just
Just the dismounting of quartz ampoule 12, make cleaning simple, the inside of supporting plate 5 is provided with groove, and fix bar 6, groove inner side are provided with groove
Wall is provided with the internal thread being threadedly coupled with fix bar 6, and the lower end of fix bar 6 through groove and is connected with fixed block 7, fixed block
Spring 8 is provided between 7 and supporting plate 5, groove is run through at the both ends of fix bar 6, and the upper end of fix bar 6 is arranged with rubber ring 9,
It is rotatablely connected between the lower end of fix bar 6 and fixed block 7, after reaching appointed place, rotates fix bar 6, make fixed block 7 to moving down
It is dynamic, promote fixed block 7 and point contact, the position restriction of finishing device, stability when ensureing work is, it is necessary to when mobile, instead
To fix bar 6 is rotated, the pull-up of fixed block 7 is moved easily, cooler 3 is fixed on the bottom in cavity by lock-screw by spring 8
On the wall of side, appendix 13, cooling gas outlet pipe 15 locking valve 17, are put with being equipped with valve 17 on cooling gas inlet pipe 16
Gas leak is put, the lower end of base 2 is provided with walking mechanism 1, and walking mechanism 1 uses universal wheel, and walking mechanism 1 realizes overall shifting
It is dynamic, device is applied to different work sites, improve the utilization rate of device.
In the present invention, the graphene growth protection device realizes overall movement by the walking mechanism 1 of the lower end of base 2,
Device is applied to different work sites, improve the utilization rate of device, after reaching appointed place, rotate fix bar 6, make fixation
Block 7 moves down, and promotes fixed block 7 and point contact, the position restriction of finishing device, stability when ensureing work, it is necessary to
When mobile, fix bar 6 is rotated backward, the pull-up of fixed block 7 is moved easily, grapheme material is entered by appendix 13 by spring 8
Enter in quartz ampoule 12, by heater 19 in the external heat of quartz ampoule 12, realize the raising of the internal temperature of quartz ampoule 12, reach stone
The temperature that black alkene growth needs, heating complete the growth of graphene, close heater 19, cooled down by cooler 3, conduct heat
Net 4 realizes the quickening of cooling velocity, while by the way that cooling gas is entered in quartz ampoule 12 from cooling gas inlet pipe 16, from cooling
Gas outlet pipe 15 completes cooling gas cooling circulation in quartz ampoule 12, accelerates cooling velocity, precipitates graphene, pressure gauge 18
It can realize the pressure monitoring in quartz ampoule 12, ensure the safety of quartz ampoule 12, it is necessary to when clearing up quartz ampoule 12, rotary spacing bar
28, make the first limited block 26 and the second limited block 27 while movement, the first limiting plate 24 and the second limiting plate 25 is unclamped to even
The fixation of extension bar 22, connecting rod 22 is detached, facilitate the dismounting of quartz ampoule 12, make cleaning simple.Graphene growth protection dress
Put that cooling protection measure is perfect, improve the quality of graphene, and quartz ampoule convenient disassembly, reduce cleaning difficulty, reduce work people
The work load of member.
The foregoing is only a preferred embodiment of the present invention, but protection scope of the present invention be not limited thereto,
Any one skilled in the art the invention discloses technical scope in, technique according to the invention scheme and its
Inventive concept is subject to equivalent substitution or change, should all be included within the scope of the present invention.
Claims (6)
1. a kind of graphene growth protection device, including base（2）, it is characterised in that the base（2）Upper end be fixed with stove
Body（20）, the body of heater（20）Inside be provided with cavity, be sequentially provided with heater from top to bottom in the cavity（19）, heat transfer meshes
（4）With cooler（3）, the heater（19）Inside be provided with quartz ampoule（12）, the quartz ampoule（12）Both ends run through
Heater（19）And it is connected to vacuum flange（11）With adpting flange（14）, the adpting flange（14）Away from quartz ampoule
（12）One end be communicated with appendix（13）, cooling gas outlet pipe（15）, cooling gas inlet pipe（16）With pressure gauge（18）, it is described
Quartz ampoule（12）Both ends be arranged with the first installing plate（21）With the second installing plate（30）, the body of heater（20）Both sides pass through
Lock-screw is fixed with supporting plate（5）, two supporting plates（5）Upper end be respectively and fixedly provided with mounting bracket（10）, and two installations
Frame（19）Upper end be socketed in quartz ampoule respectively（12）Both ends, two mounting brackets（19）With the first installing plate（21）,
Two installing plates（30）Between be equipped with connecting rod（22）, the connecting rod（22）Both ends be arranged with stopping means（23）.
A kind of 2. graphene growth protection device according to claim 1, it is characterised in that the stopping means（23）Bag
Include the first limiting plate（24）With the second limiting plate（25）, first limiting plate（24）With the second limiting plate（25）Close to connecting rod
（22）Side be provided with rubber slab（29）, first limiting plate（24）With the second limiting plate（25）Both ends be respectively equipped with first
Limited block（26）With the second limited block（27）, first limited block（26）With the second limited block（27）Between be provided with gag lever post
（28）, first limited block（26）With the second limited block（27）Inside be equipped with and gag lever post（28）Corresponding screw, two
Screw thread in opposite direction, the gag lever post are respectively equipped with the individual screw（28）Both ends extend through two screws, and limit
Position bar（28）With the first limited block（26）, the second limited block（27）Between be threaded connection.
A kind of 3. graphene growth protection device according to claim 1, it is characterised in that the supporting plate（5）It is interior
Portion is provided with groove, and fix bar is provided with the groove（6）, the groove madial wall is provided with and fix bar（6）Threaded connection
Internal thread, the fix bar（6）Lower end through groove and be connected with fixed block（7）, the fixed block（7）With supporting plate（5）
Between be provided with spring（8）, the fix bar（6）Both ends run through groove, and fix bar（6）Upper end be arranged with rubber ring
（9）, the fix bar（6）Lower end and fixed block（7）Between be rotatablely connected.
A kind of 4. graphene growth protection device according to claim 1, it is characterised in that the cooler（3）Pass through
Lock-screw is fixed in the bottom side wall in cavity.
A kind of 5. graphene growth protection device according to claim 1, it is characterised in that the appendix（13）, it is cold
But gas outlet pipe（15）With cooling gas inlet pipe（16）On be equipped with valve（17）.
A kind of 6. graphene growth protection device according to claim 1, it is characterised in that the base（2）Lower end
Provided with walking mechanism（1）, the walking mechanism（1）Using universal wheel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711043572.8A CN107555421B (en) | 2017-10-31 | 2017-10-31 | Graphene growth protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711043572.8A CN107555421B (en) | 2017-10-31 | 2017-10-31 | Graphene growth protection device |
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| Publication Number | Publication Date |
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| CN107555421A true CN107555421A (en) | 2018-01-09 |
| CN107555421B CN107555421B (en) | 2020-10-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201711043572.8A Active CN107555421B (en) | 2017-10-31 | 2017-10-31 | Graphene growth protection device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111733400A (en) * | 2020-07-07 | 2020-10-02 | 北京石墨烯技术研究院有限公司 | Quartz support and quartz heating device |
| CN113353919A (en) * | 2020-03-04 | 2021-09-07 | 哈尔滨金纳科技有限公司 | Single-walled carbon nanotube preparation facilities |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103449428A (en) * | 2013-09-10 | 2013-12-18 | 常州二维碳素科技有限公司 | Graphene growing device and method |
| CN203440085U (en) * | 2013-09-11 | 2014-02-19 | 合肥微晶材料科技有限公司 | High-temperature tubular furnace for graphene growth |
| CN203846100U (en) * | 2013-12-12 | 2014-09-24 | 常州二维碳素科技有限公司 | Movable type multi-station deposition furnace used for graphene deposition |
| KR20160110873A (en) * | 2015-03-09 | 2016-09-22 | 한양대학교 산학협력단 | Thin film, method of fabricating the same, apparatus for fabricating the same |
| CN107173179A (en) * | 2017-07-14 | 2017-09-19 | 合肥耀世同辉科技有限公司 | A kind of energy saving and environment friendly irrigation equipment |
| CN206502602U (en) * | 2016-12-28 | 2017-09-19 | 海安鑫久纺织有限公司 | A kind of quick equipment for preparing graphene |
| CN206511741U (en) * | 2016-12-28 | 2017-09-22 | 天津安芝金林地毯有限公司 | A kind of Winder of spool |
| CN107283367A (en) * | 2017-08-23 | 2017-10-24 | 肇庆高新区异星科技有限公司 | A kind of Novel stapler |
| CN207659094U (en) * | 2017-10-31 | 2018-07-27 | 南京旭羽睿材料科技有限公司 | A kind of graphene growth protective device |
-
2017
- 2017-10-31 CN CN201711043572.8A patent/CN107555421B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103449428A (en) * | 2013-09-10 | 2013-12-18 | 常州二维碳素科技有限公司 | Graphene growing device and method |
| CN203440085U (en) * | 2013-09-11 | 2014-02-19 | 合肥微晶材料科技有限公司 | High-temperature tubular furnace for graphene growth |
| CN203846100U (en) * | 2013-12-12 | 2014-09-24 | 常州二维碳素科技有限公司 | Movable type multi-station deposition furnace used for graphene deposition |
| KR20160110873A (en) * | 2015-03-09 | 2016-09-22 | 한양대학교 산학협력단 | Thin film, method of fabricating the same, apparatus for fabricating the same |
| CN206502602U (en) * | 2016-12-28 | 2017-09-19 | 海安鑫久纺织有限公司 | A kind of quick equipment for preparing graphene |
| CN206511741U (en) * | 2016-12-28 | 2017-09-22 | 天津安芝金林地毯有限公司 | A kind of Winder of spool |
| CN107173179A (en) * | 2017-07-14 | 2017-09-19 | 合肥耀世同辉科技有限公司 | A kind of energy saving and environment friendly irrigation equipment |
| CN107283367A (en) * | 2017-08-23 | 2017-10-24 | 肇庆高新区异星科技有限公司 | A kind of Novel stapler |
| CN207659094U (en) * | 2017-10-31 | 2018-07-27 | 南京旭羽睿材料科技有限公司 | A kind of graphene growth protective device |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113353919A (en) * | 2020-03-04 | 2021-09-07 | 哈尔滨金纳科技有限公司 | Single-walled carbon nanotube preparation facilities |
| CN113353919B (en) * | 2020-03-04 | 2022-11-01 | 哈尔滨金纳科技有限公司 | Single-walled carbon nanotube preparation facilities |
| CN111733400A (en) * | 2020-07-07 | 2020-10-02 | 北京石墨烯技术研究院有限公司 | Quartz support and quartz heating device |
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