Atmosphere furnace for carbon nanotube production

Abstract

The invention is applicable to the technical field of atmosphere furnaces, and discloses an atmosphere furnace for carbon nanotube production, which comprises a furnace body assembly, a furnace door assembly is mounted on one side of the furnace body assembly, a sealing cover assembly is arranged on one side of the furnace door assembly, the sealing cover assembly is mounted on the furnace body assembly, and a cleaning assembly is arranged below the sealing cover assembly. The cleaning assembly is installed on the furnace body assembly, the sealing cover assembly comprises rotating mechanisms, the two rotating mechanisms are symmetrically installed on the furnace body assembly, each rotating mechanism comprises a rotating fixing block, one side of each rotating fixing block is fixed to the furnace body assembly, a movable shaft is rotationally arranged in the middle of each rotating fixing block, and the movable shaft is fixed to the furnace body assembly. By means of the device, the problems that the efficiency of material loading and unloading is low, a furnace door is not completely cooled when a product is taken out, and personnel are scalded are solved, and the effects that workers are prevented from being scalded, and opening and closing are convenient are achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of atmosphere furnaces, and more specifically, it relates to an atmosphere furnace for the production of carbon nanotubes. Background Art

[0002] As a nanomaterial with a special structure and excellent properties, carbon nanotubes have broad application prospects in many fields. There are various production methods for carbon nanotubes, including arc discharge method, laser ablation method, chemical vapor deposition method, etc. Among them, the chemical vapor deposition method has become a commonly used method in current industrial production due to its high production efficiency and relatively simple equipment.

[0003] Currently, in the process of producing carbon nanotubes by chemical vapor deposition method, the atmosphere furnace, as one of the key production equipments, plays a crucial role. It provides a necessary reaction environment for the growth of carbon nanotubes, and realizes the efficient synthesis of carbon nanotubes by precisely controlling parameters such as temperature, pressure and gas composition in the furnace.

[0004] However, during the use of the atmosphere furnace, it is necessary to frequently disassemble and assemble the furnace door for loading and unloading materials and taking out products. The existing ways of closing the furnace door will reduce the loading and unloading efficiency, and because the temperature in the atmosphere furnace is relatively high, it is necessary to wait for the furnace door to cool completely when taking out the products. If it is not completely cooled, there will be a risk of scalding personnel. Summary of the Invention

[0005] Aiming at the deficiencies of the existing technology, the purpose of the present invention is to provide an atmosphere furnace for the production of carbon nanotubes.

[0006] To achieve the above purpose, the present invention provides the following technical solutions:

[0007] The present invention is further configured as: an atmosphere furnace for the production of carbon nanotubes, including a furnace body assembly. A furnace door assembly is installed on one side of the furnace body assembly. A cover assembly is arranged on one side of the furnace door assembly. The cover assembly is installed on the furnace body assembly. A cleaning assembly is arranged below the cover assembly. The cleaning assembly is installed on the furnace body assembly. The cover assembly includes a rotating mechanism. Two rotating mechanisms are symmetrically installed on the furnace body assembly. The rotating mechanism includes a rotating fixing block. One side of the rotating fixing block is fixed on the furnace body assembly. An activity shaft is rotatably arranged in the middle of the rotating fixing block. Rotating connecting plates are installed at both ends of the activity shaft. A pressing plate is installed on the two rotating mechanisms. The rotating connecting plate is connected to the side wall of the pressing plate. A fireproof block is installed on one side of the pressing plate.

[0008] The present invention is further configured as: the furnace body assembly includes a shell. An indicator light is installed on the top of the shell. A main control board is arranged on the shell. A furnace cavity is arranged inside the shell. A protective layer is arranged on the outer ring of the furnace cavity close to the outer wall of the shell.

[0009] The present invention is further configured such that: four positioning components are provided on the protective layer, and the cover component is installed on the furnace cavity.

[0010] The present invention is further configured such that: each of the positioning components includes a positioning block, the positioning blocks are symmetrically installed on the protective layer, a rotating sphere is provided between the two positioning blocks, a positioning rotating shaft penetrates through the middle of the rotating sphere, both ends of the positioning rotating shaft are rotatably installed on the two positioning blocks, and a fixing screw is threadedly and rotatably installed on the positioning rotating shaft.

[0011] The present invention is further configured such that: the furnace door component includes a furnace door mounting seat, the furnace door mounting seat is fixedly installed on the housing, a cover plate is rotatably installed on the furnace door mounting seat, and four furnace door clamping blocks are installed on the side wall of the cover plate.

[0012] By adopting the above technical solution, the pressing plate is rotated through the rotating mechanism, and the fireproof block closes the discharge port of the furnace cavity, avoiding air entry during processing. After processing, the fireproof block is driven by the pressing plate to open, achieving the effects of preventing staff from being scalded and facilitating opening and closing.

[0013] The present invention is further configured such that: the cleaning component includes a first mounting block and a cleaning cover plate, the first mounting block is installed on the housing, a connecting plate is rotatably installed thereon, second mounting blocks are symmetrically installed on one side of the cleaning cover plate, and the end of the connecting plate away from the first mounting block is rotatably installed with the second mounting blocks.

[0014] The present invention is further configured such that: a cleaning handle is provided above the second mounting block, the cleaning handle is installed on the cleaning cover plate, and four cleaning clamping blocks are provided on the side wall of the cleaning cover plate.

[0015] The present invention is further configured such that: a cleaning mechanism is installed on the other side of the cleaning cover plate, the cleaning mechanism includes a cleaning housing, a driving motor is installed between the cleaning housing and the cleaning cover plate, the driving motor is fixed on the cleaning cover plate, a driving gear is provided inside the cleaning housing, and four driven gears are fitted on the outer ring of the driving gear.

[0016] The present invention is further configured such that: the output end of the driving motor is connected to the center of the driving gear, a main multi-stage telescopic rod component is provided on the side of the driving gear away from the driving motor, the main multi-stage telescopic rod component penetrates the cleaning housing, a cleaning connecting rod is installed at the output end of the main multi-stage telescopic rod component, a cleaning head is installed on the cleaning connecting rod, and slave multi-stage telescopic rod components penetrate the cleaning housing and are installed on the driven gears, and cleaning heads are installed at the output ends of the slave multi-stage telescopic rod components.

[0017] The present invention is further configured such that: the slave multi-stage telescopic rod component includes a main screw, the main screw is connected to the driven gear, a first threaded housing is sleeved on the main screw, a second threaded housing is sleeved on the first threaded housing, and a telescopic housing is sleeved on the second threaded housing.

[0018] By adopting the above technical solution, a driving motor is provided to drive the slave multi-stage telescopic rod component and the main multi-stage telescopic rod component to rotate, synchronously driving the cleaning head to clean the inner wall of the furnace cavity, achieving the effect of being able to clean the particles and residues on the inner wall of the furnace cavity.

[0019] In summary, the present application includes at least one of the following beneficial technical effects: the pressing plate is provided to rotate through a rotating mechanism, and the fireproof block closes the discharge port of the furnace cavity, preventing air from entering during processing. After processing, the fireproof block is opened by driving the pressing plate, achieving the effects of preventing staff from being scalded and facilitating opening and closing. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is the overall structural schematic diagram of an atmosphere furnace for carbon nanotube production in the present invention;

[0021] Figure 2 is Figure 1 the open state structural schematic diagram of;

[0022] Figure 3 is Figure 2 the working state structural schematic diagram of the cleaning component in;

[0023] Figure 4 is Figure 2 the explosion structural schematic diagram of;

[0024] Figure 5 is Figure 1 the enlarged structural schematic diagram at A in;

[0025] Figure 6 is Figure 5 the overall structural schematic diagram of the positioning component in;

[0026] Figure 7 is Figure 4 the overall structural schematic diagram of the capping component in;

[0027] Figure 8 is Figure 7 the explosion structural schematic diagram of;

[0028] Figure 9 is Figure 8 the explosion structural schematic diagram of the rotating mechanism in;

[0029] Figure 10 is Figure 4 the overall structural schematic diagram of the cleaning component in;

[0030] Figure 11 is Figure 10 explosion structure schematic diagram;

[0031] Figure 12 is Figure 11 partial explosion structure schematic diagram;

[0032] Figure 13 is Figure 11 explosion structure schematic diagram of the cleaning mechanism in

[0033] Figure 14 is Figure 13 cooperating structure schematic diagram of the multi-stage telescopic rod component, driven gear and cleaning head in

[0034] Figure 15 is Figure 14 top view;

[0035] Figure 16 is Figure 15 sectional structure schematic diagram along the A-A direction.

[0036] Explanation of reference numerals: 1. Furnace body assembly; 11. Shell; 12. Main control board; 13. Indicator light; 14. Protective layer; 15. Furnace cavity;

[0037] 2. Furnace door assembly; 21. Cover plate; 22. Furnace door latch; 23. Furnace door mounting seat;

[0038] 3. Capping assembly; 31. Pressing plate; 32. Fireproof block; 33. Rotating mechanism; 331. Rotating connecting plate; 332. Rotating fixing block; 333. Movable shaft;

[0039] 4. Cleaning assembly; 41. First mounting block; 42. Connecting plate; 43. Cleaning cover plate; 44. Cleaning handle; 45. Cleaning latch; 46. Second mounting block; 47. Cleaning mechanism; 471. Cleaning housing; 472. Driving motor; 473. Driving gear; 474. Driven gear; 475. Multi-stage telescopic rod component; 4751. Main screw; 4752. Telescopic housing; 4753. First threaded housing; 4754. Second threaded housing; 476. Cleaning head; 477. Main multi-stage telescopic rod component; 478. Cleaning connecting rod;

[0040] 5. Positioning assembly; 51. Positioning block; 52. Positioning rotating shaft; 53. Rotating sphere; 54. Fixed screw. Specific implementation manners

[0041] It should be noted that, without conflict, the embodiments and features in the embodiments of the present application may be combined with each other. The present invention will be described in detail below with reference to the drawings and in combination with the embodiments.

[0042] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by those of ordinary skill in the technical field to which this application belongs.

[0043] Please refer to Figure 1-16 , the present invention provides the following technical solutions:

[0044] Embodiment

[0045] Refer to Figure 1 , which includes a furnace body assembly 1. A furnace door assembly 2 is installed on one side of the furnace body assembly 1. A cover assembly 3 is arranged on one side of the furnace door assembly 2. The cover assembly 3 is installed on the furnace body assembly 1. A cleaning assembly 4 is arranged below the cover assembly 3. The cleaning assembly 4 is installed on the furnace body assembly 1.

[0046] Refer to Figures 2 to 5 , the furnace body assembly 1 is used for processing carbon nanotubes. The cover assembly 3 closes the processing port of the furnace body assembly 1. The furnace door assembly 2 performs secondary closing of the processing port. The cleaning assembly 4 cleans the inside of the furnace body assembly 1 after processing carbon nanotubes.

[0047] The furnace body assembly 1 includes a housing 11. An indicator light 13 is installed on the top of the housing 11. A main control board 12 is arranged on the housing 11. A furnace cavity 15 is arranged inside the housing 11. A protective layer 14 is arranged on the outer circle of the furnace cavity 15 close to the outer wall of the housing 11.

[0048] The housing 11 provides an installation position. The furnace cavity 15 processes carbon nanotubes. A catalyst and a carbon source gas are introduced into the furnace cavity 15, and then the temperature inside the furnace cavity 15 is raised to 1000 degrees to grow carbon nanotubes. The indicator light 13 indicates the working state of the housing 11. The main control board 12 monitors the working process of the housing 11. The protective layer 14 positions and installs the furnace cavity 15.

[0049] Four positioning components 5 are arranged on the protective layer 14. The cover assembly 3 is installed on the furnace cavity 15.

[0050] The positioning components 5 can fix the furnace door assembly 2 to prevent the furnace door assembly 2 from moving during the closing process. The cover assembly 3 is installed near the outer opening of the furnace cavity 15. The cover assembly 3 closes the discharge port of the furnace cavity 15. The furnace door assembly 2 closes the gap between the furnace cavity 15 and the protective layer 14.

[0051] The furnace door assembly 2 includes a furnace door mounting seat 23. The furnace door mounting seat 23 is fixedly installed on the housing 11. A cover plate 21 is rotatably installed on the furnace door mounting seat 23. Four furnace door latch blocks 22 are installed on the side wall of the cover plate 21.

[0052] The cover plate 21 closes the gap between the furnace cavity 15 and the protective layer 14. At the position where the cover plate 21 rotates on the furnace door mounting seat 23, when the cover plate 21 fits against the outer wall of the furnace cavity 15, it is locked by the positioning assembly 5 to prevent the cover plate 21 from moving during the processing.

[0053] Refer to Figure 6 , the positioning assembly 5 includes positioning blocks 51. The positioning blocks 51 are symmetrically installed on the protective layer 14. A rotating sphere 53 is arranged between the two positioning blocks 51. A positioning rotating shaft 52 penetrates through the middle of the rotating sphere 53. The two ends of the positioning rotating shaft 52 are rotatably installed on the two positioning blocks 51. A fixing screw 54 is rotatably installed on the positioning rotating shaft 52 by means of threads.

[0054] When the cover plate 21 is not closed or the cleaning assembly 4 is being cleaned, the fixing screw 54 is arranged in an inclined position. When the cover plate 21 or the cleaning assembly 4 is closed, the rotating sphere 53 drives the positioning rotating shaft 52 to rotate in the two positioning blocks 51 to a position perpendicular to the furnace door latch 22, and the fixing screw 54 is rotated towards the rotating sphere 53 so that the upper end of the fixing screw 54 fits against the surface of the furnace door latch 22 to fix the furnace door latch 22.

[0055] Refer to Figure 7 and Figure 9 , the cover assembly 3 includes a rotating mechanism 33. The two rotating mechanisms 33 are symmetrically installed on the furnace body assembly 1. The rotating mechanism 33 includes a rotating fixing block 332. One side of the rotating fixing block 332 is fixed on the furnace body assembly 1. A movable shaft 333 is rotatably arranged in the middle of the rotating fixing block 332. The two ends of the movable shaft 333 are provided with rotating connecting plates 331. A pressing plate 31 is installed on the two rotating mechanisms 33. The rotating connecting plate 331 is connected to the side wall of the pressing plate 31. A fireproof block 32 is installed on one side of the pressing plate 31.

[0056] The rotating fixing block 332 is installed on the inner wall of the furnace cavity 15. The rotation of the movable shaft 333 drives the rotation of the rotating connecting plate 331, and the rotation of the rotating connecting plate 331 drives the rotation of the pressing plate 31. When the pressing plate 31 rotates to fit against the inner wall of the outlet of the furnace cavity 15, the fireproof block 32 closes the outlet of the furnace cavity 15.

[0057] By setting the rotating mechanism 33 to drive the pressing plate 31 to rotate, the fireproof block 32 closes the outlet of the furnace cavity 15 to prevent air from entering during processing. After processing, the pressing plate 31 drives the fireproof block 32 to open, achieving the effects of preventing staff from being scalded and facilitating opening and closing.

[0058] After processing the carbon nanotubes, since the catalyst will carbonize at high temperatures, after removing the carbon nanotubes, there will be residues and particles inside the furnace chamber 15. These particles are easier to clean at 100 degrees Celsius than at room temperature, and the residues and loose particles are easier to remove. Moreover, the temperature of the atmosphere furnace is likely to dissipate easily when it is in an open state. Therefore, it is necessary to keep the temperature inside the furnace chamber 15 and clean it. Thus, the cleaning assembly 4 is proposed.

[0059] Refer to Figures 10 to 16 , the cleaning assembly 4 includes a first mounting block 41 and a cleaning cover plate 43. The first mounting block 41 is mounted on the housing 11, and a connecting plate 42 is rotatably mounted thereon. On one side of the cleaning cover plate 43, second mounting blocks 46 are symmetrically installed. One end of the connecting plate 42 away from the first mounting block 41 is rotatably installed with the second mounting block 46. Above the second mounting block 46, there is a cleaning handle 44, and the cleaning handle 44 is mounted on the cleaning cover plate 43. On the side wall of the cleaning cover plate 43, there are four cleaning blocks 45.

[0060] The connecting plate 42 is rotatably arranged in the first mounting block 41 and the second mounting block 46, achieving the effect of facilitating the opening and closing of the cleaning cover plate 43. The cleaning handle 44 facilitates the movement of the cleaning cover plate 43. The four cleaning blocks 45 are arranged to fit the position of the positioning assembly 5. When the cleaning cover plate 43 fits with the furnace chamber 15, the cleaning cover plate 43 can be locked.

[0061] By setting the furnace door block 22 and the cleaning block 45 to fit the position of the positioning assembly 5, the effect of using the four positioning assemblies 5 to lock the positions of the furnace door block 22 and the cleaning block 45 respectively can be achieved.

[0062] The shape of the cleaning cover plate 43 fits when the sealing cover assembly 3 is opened. On the other side of the cleaning cover plate 43, there is a cleaning mechanism 47. The cleaning mechanism 47 includes a cleaning housing 471. Between the cleaning housing 471 and the cleaning cover plate 43, there is a driving motor 472, and the driving motor 472 is fixed on the cleaning cover plate 43. Inside the cleaning housing 471, there is a driving gear 473, and four driven gears 474 are arranged to fit the outer ring of the driving gear 473.

[0063] The cleaning housing 471 is fixed on the cleaning cover plate 43. The driving gear 473 and the four driven gears 474 are meshed and arranged in the cleaning housing 471. The output end of the driving motor 472 drives the driving gear 473 to rotate, and the rotation of the driving gear 473 drives the four driven gears 474 to rotate.

[0064] The output end of the driving motor 472 is connected to the center of the driving gear 473. On the side of the driving gear 473 away from the driving motor 472, a main multi-stage telescopic rod component 477 is provided. The main multi-stage telescopic rod component 477 penetrates the cleaning housing 471. The output end of the main multi-stage telescopic rod component 477 is equipped with a cleaning connecting rod 478, and a cleaning head 476 is installed on the cleaning connecting rod 478. On the driven gears 474, slave multi-stage telescopic rod components 475 are installed through the cleaning housing 471, and the output ends of the slave multi-stage telescopic rod components 475 are all equipped with cleaning heads 476.

[0065] When the driving gear 473 rotates, it drives the main multi-stage telescopic rod component 477 to rotate, synchronously drives the cleaning connecting rod 478 to rotate, and the cleaning head 476 conducts a large-area cleaning of the inner cavity of the furnace cavity 15. When the four driven gears 474 rotate, they drive the slave multi-stage telescopic rod components 475 to rotate, and the cleaning head 476 cleans the four dead corners of the inner cavity of the furnace cavity 15.

[0066] The slave multi-stage telescopic rod component 475 includes a main screw rod 4751. The main screw rod 4751 is connected to the driven gear 474. A first threaded housing 4753 is sleeved on the main screw rod 4751. A second threaded housing 4754 is sleeved on the first threaded housing 4753. A telescopic housing 4752 is sleeved on the second threaded housing 4754.

[0067] The main screw rod 4751 is connected to the driven gear 474. When the driving motor 472 rotates forward, the driven gear 474 drives the main screw rod 4751 to rotate forward in the first threaded housing 4753. The main screw rod 4751 is in threaded cooperation with the first threaded housing 4753. Through the frictional force between the cleaning head 476 and the inner wall of the furnace cavity 15, the first threaded housing 4753 is driven to extend. When the first threaded housing 4753 extends to the top, the external thread of the first threaded housing 4753 is in threaded cooperation with the thread of the second threaded housing 4754. Through the frictional force between the cleaning head 476 and the inner wall of the furnace cavity 15, the second threaded housing 4754 extends. After the second threaded housing 4754 extends to the top, the driving motor 472 rotates in reverse, the driven gear 474 drives the main screw rod 4751 to rotate in reverse in the first threaded housing 4753, the second threaded housing 4754 retracts, and after the second threaded housing 4754 retracts completely, the first threaded housing 4753 retracts. The structure of the main multi-stage telescopic rod component 477 is the same as that of the slave multi-stage telescopic rod component 475. Through the structural design of the slave multi-stage telescopic rod component 475 and the main multi-stage telescopic rod component 477, the effect of thoroughly cleaning the inside of the furnace cavity 15 is achieved.

[0068] By setting the driving motor 472 to drive the slave multi-stage telescopic rod component 475 and the main multi-stage telescopic rod component 477 to rotate, and synchronously driving the cleaning head 476 to clean the inner wall of the furnace cavity 15, the effect of cleaning the particles and residues on the inner wall of the furnace cavity 15 is achieved.

[0069] By setting the cleaning cover plate 43 and the cleaning block 45, the effect of ensuring the temperature stability in the furnace cavity 15 and saving resources can be achieved when cleaning the furnace cavity 15.

[0070] After the furnace cavity 15 finishes processing the carbon nanotubes, the temperature in the furnace cavity 15 drops to 100 degrees. Loosen the fixing screw 54 upward, open the cover plate 21 outward, and then open the fireproof block 32 through the pressing plate 31 to take out the material. At this time, attach the cleaning cover plate 43 to the furnace cavity 15 through the connecting plate 42, lock the cleaning block 45 through the positioning assembly 5, make the cleaning mechanism 47 fit with the discharge port of the furnace cavity 15, and the cleaning head 476 cleans the inner wall of the furnace cavity 15.

[0071] Enlightened by the ideal embodiments of the present invention described above, through the above description, relevant staff can completely make various changes and modifications without departing from the technical idea of this invention. The technical scope of this invention is not limited to the content in the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. An atmosphere furnace for producing carbon nanotubes, characterized in that: The invention comprises a furnace body assembly (1), a furnace door assembly (2) is installed on one side of the furnace body assembly (1), a cover assembly (3) is arranged on one side of the furnace door assembly (2), the cover assembly (3) is installed on the furnace body assembly (1), a cleaning assembly (4) is arranged below the cover assembly (3), the cleaning assembly (4) is installed on the furnace body assembly (1), the cover assembly (3) comprises a rotating mechanism (33), two rotating mechanisms (33) are symmetrically installed on the furnace body assembly (1), the rotating mechanism (33) is arranged on the furnace body assembly (1), and the rotating mechanism (33) is arranged on the furnace body assembly (1). The mechanism (33) comprises a rotating fixed block (332), one side of which is fixed on the furnace body assembly (1), a movable shaft (333) is provided in the middle of the rotating fixed block (332), both ends of the movable shaft (333) are provided with rotating connecting plates (331), a pressure plate (31) is provided on the two rotating mechanisms (33), the rotating connecting plates (331) are connected to the side wall of the pressure plate (31), and a fireproof block (32) is provided on one side of the pressure plate (31).

2. The atmosphere furnace for producing carbon nanotubes according to claim 1, characterized in that: The furnace body assembly (1) comprises a shell (11), an indicator light (13) is installed on the top of the shell (11), a main control board (12) is arranged on the shell (11), a furnace cavity (15) is arranged inside the shell (11), and a protective layer (14) is arranged on the outer ring of the furnace cavity (15) close to the outer wall of the shell (11).

3. The atmosphere furnace for producing carbon nanotubes according to claim 2, characterized in that: Four positioning components (5) are arranged on the protective layer (14), and the sealing component (3) is installed on the furnace cavity (15).

4. The atmosphere furnace for producing carbon nanotubes according to claim 3, characterized in that: The positioning components (5) each comprise a positioning block (51), the positioning blocks (51) being symmetrically mounted on the protective layer (14), a rotating sphere (53) being arranged between the two positioning blocks (51), a positioning shaft (52) being penetrated through the middle of the rotating sphere (53), both ends of the positioning shaft (52) being rotatably mounted on the two positioning blocks (51), and a fixing screw (54) being threadedly rotatably mounted on the positioning shaft (52).

5. The atmosphere furnace for producing carbon nanotubes according to claim 1, characterized in that: The furnace door assembly (2) comprises a furnace door mounting seat (23), wherein the furnace door mounting seat (23) is fixedly mounted on the shell (11), a cover plate (21) is rotatably mounted on the furnace door mounting seat (23), and four furnace door clamping blocks (22) are mounted on the side wall of the cover plate (21).

6. The atmosphere furnace for producing carbon nanotubes according to claim 5, characterized in that: The cleaning assembly (4) comprises a first mounting block (41) and a cleaning cover plate (43); the first mounting block (41) is mounted on the housing (11); a connecting plate (42) is rotatably mounted on the housing; a second mounting block (46) is symmetrically mounted on one side of the cleaning cover plate (43); an end of the connecting plate (42) away from the first mounting block (41) is rotatably mounted with the second mounting block (46).

7. The atmosphere furnace for producing carbon nanotubes according to claim 6, characterized in that: A cleaning handle (44) is arranged above the second mounting block (46), and the cleaning handle (44) is mounted on the cleaning cover plate (43). Four cleaning card blocks (45) are arranged on the side wall of the cleaning cover plate (43).

8. The atmosphere furnace for producing carbon nanotubes according to claim 6, characterized in that: A cleaning mechanism (47) is installed on the other side of the cleaning cover (43), and the cleaning mechanism (47) comprises a cleaning shell (471). A driving motor (472) is installed between the cleaning shell (471) and the cleaning cover (43), and the driving motor (472) is fixed on the cleaning cover (43). A driving tooth (473) is arranged inside the cleaning shell (471), and four driven teeth (474) are arranged in a fit on the outer ring of the driving tooth (473).

9. The atmosphere furnace for producing carbon nanotubes according to claim 8, characterized in that: The output end of the driving motor (472) is connected to the center of the active tooth (473); a main multi-stage telescopic rod component (477) is arranged on the side of the active tooth (473) away from the driving motor (472); the main multi-stage telescopic rod component (477) penetrates the cleaning shell (471); a cleaning connecting rod (478) is installed on the output end of the main multi-stage telescopic rod component (477); a cleaning head (476) is installed on the cleaning connecting rod (478); and a slave multi-stage telescopic rod component (475) is installed on each of the driven teeth (474) and penetrates the cleaning shell (471); and a cleaning head (476) is installed on each of the output ends of the slave multi-stage telescopic rod components (475).

10. The atmosphere furnace for producing carbon nanotubes according to claim 9, characterized in that: The multi-stage telescopic rod component (475) includes a main screw (4751), the main screw (4751) is connected to the driven gear (474), the main screw (4751) is sleeved with a first threaded shell (4753), the first threaded shell (4753) is sleeved with a second threaded shell (4754), and the second threaded shell (4754) is sleeved with a telescopic shell (4752).

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