An apparatus for continuous preparation of single-walled carbon nanotubes based on an electric arc method

Abstract

This invention belongs to the field of nanomaterial preparation technology, and particularly relates to an apparatus for the continuous preparation of single-walled carbon nanotubes based on an electric arc method. During operation, the apparatus uses a pushing mechanism to push a reaction anode from a switching mechanism into the reaction chamber, and then applies electricity for the reaction. After a set reaction time, the power is stopped. At this point, a scraping component scrapes the product accumulated on the reaction cathode, which falls into a collecting component. Simultaneously, the pushing mechanism retracts, and the switching mechanism switches to a new reaction anode, which is then pushed into the reaction chamber by the pushing mechanism to restart the reaction. This device utilizes a scraping component to remove the product from the reaction cathode and collects it through a collecting component, while simultaneously switching to a new reaction anode via a switching mechanism. The entire process is highly automated, achieving automatic product collection and automatic anode replacement, significantly improving the overall efficiency of the process.

Description

Technical Field

[0001] This invention belongs to the field of nanomaterial preparation technology, and particularly relates to a device for the continuous preparation of single-walled carbon nanotubes based on the electric arc method. Background Technology

[0002] Single-walled carbon nanotubes (SWCNTs) possess unique electrical, mechanical, and thermal properties, making them promising candidates for applications in numerous cutting-edge fields. Among mainstream preparation methods, the arc discharge method is considered to offer the best physical properties due to its ability to produce highly graphitized SWCNTs with few defects. A typical process involves using metals such as iron, cobalt, and nickel, or their alloys, as catalysts, which are incorporated into an anode graphite rod. Under the influence of a high-temperature electric arc (3000–4000°C), the anode material evaporates to generate carbon vapor. Carbon atoms combine with the catalyst metal particles and condense and deposit on the surface of the cathode graphite rod, producing a product containing SWCNTs. By precisely controlling the type, ratio, and particle size of the catalyst, the efficient synthesis of high-purity SWCNTs with specific structures can be achieved.

[0003] However, this technology has drawbacks: deposits formed on the cathode surface accumulate continuously, making the production process unsustainable and requiring periodic shutdowns for cleaning. Furthermore, each system restart after cleaning necessitates manual reinstallation of the graphite electrodes, a process that not only interrupts production but also significantly reduces the overall efficiency of the process. Summary of the Invention

[0004] The purpose of this invention is to provide a device for the continuous preparation of single-walled carbon nanotubes based on the electric arc method, so as to solve the above-mentioned problems.

[0005] To achieve the above objectives, the present invention provides the following solution: An apparatus for continuous preparation of single-walled carbon nanotubes based on an electric arc method includes: a reaction chamber, a material box on one side of the reaction chamber, a switching mechanism and a pushing mechanism inside the material box, a plurality of reaction anodes on the switching mechanism, the reaction anode at the top being correspondingly arranged with the pushing mechanism, and an anode feed hole on the outer wall of the reaction chamber, the anode feed hole being correspondingly arranged with the reaction anode at the top. A reaction cathode is detachably connected to the top of the reaction chamber. The reaction cathode extends into the reaction chamber and is positioned corresponding to the end of the reaction anode that extends into the reaction chamber. A scraping component is provided on the reaction cathode, and a collection component is provided inside the reaction chamber. The collection component is located at the bottom of the reaction chamber.

[0006] In the device for continuous preparation of single-walled carbon nanotubes based on the electric arc method of the present invention, the switching mechanism includes a support frame, the support frame is fixedly connected to the material box, two rotating shafts are fixedly connected to one side of the support frame, the two rotating shafts are respectively located at both ends of the support frame, rollers are rotatably connected to both rotating shafts, a first conveyor belt is sleeved on the outside of the two rollers, and multiple sleeves are fixedly connected to the outside of the first conveyor belt, the multiple sleeves are arranged sequentially at intervals, and the reaction anode is detachably connected to the sleeve; The inner sidewall of the first conveyor belt is provided with multiple toothed grooves at equal intervals in the circumferential direction. The toothed grooves are engaged with gears, and the gears are coaxially fixed to the output shaft of the switching motor. The switching motor is fixed to the support frame.

[0007] In the device for continuous preparation of single-walled carbon nanotubes based on the electric arc method of the present invention, an installation block is slidably connected inside the sleeve, and an installation hole for installing the reaction anode is opened at one end of the installation block facing the reaction chamber. A second sliding groove is opened on the sleeve, and the second sliding groove is arranged along the length direction of the sleeve. A second slider is slidably connected inside the second sliding groove, and the second slider is fixedly connected to the installation block.

[0008] In the device for continuous preparation of single-walled carbon nanotubes based on the electric arc method of the present invention, the feeding mechanism includes a pushing motor, which is fixedly connected to the inner wall of the material box. A threaded rod is coaxially fixed to the output shaft of the pushing motor. A sliding rod is threadedly connected to the threaded rod. A sliding cylinder is sleeved on the outer side of the sliding rod. The sliding cylinder is fixedly connected to the material box by two connecting rods. A first sliding groove is formed on the inner wall of the sliding cylinder. The first sliding groove is arranged along the length direction of the sliding cylinder. A first slider is slidably connected in the first sliding groove. The first slider is fixedly connected to the outer wall of the sliding rod. One end of the sliding rod extends out of the sliding cylinder and is fixedly connected to a first magnetic block. The first magnetic block is magnetically connected to a second magnetic block. The second magnetic block is fixedly connected to the mounting block.

[0009] In the device for continuous preparation of single-walled carbon nanotubes based on the electric arc method of the present invention, an opening is provided on one side of the reaction chamber, the opening is located at the bottom of the reaction chamber, and the collection assembly includes a collection box detachably connected to the opening. The collection box is adapted to the reaction chamber, one end of the collection box extends into the reaction chamber, and the other end of the collection box closes the opening.

[0010] In the apparatus for continuous preparation of single-walled carbon nanotubes based on the electric arc method of the present invention, two rollers are rotatably connected inside the reaction chamber. The two rollers are parallel and symmetrically arranged, and the axes of the two rollers are located on the same horizontal plane. One of the rollers extends out of the reaction chamber and is coaxially fixed to the output shaft of a conveyor motor. The conveyor motor is fixed to the outer side wall of the reaction chamber. A second conveyor belt is sleeved on the outer side of the two rollers. A flexible scraper is slidably contacted on the bottom surface of the second conveyor belt. The length direction of the flexible scraper is perpendicular to the conveying direction of the second conveyor belt. The flexible scraper is fixed to one of the inner side walls of the collection box.

[0011] In the apparatus for continuous preparation of single-walled carbon nanotubes based on the electric arc method of the present invention, the second conveyor belt includes a reinforcing layer and a filter layer located outside the reinforcing layer. Both the reinforcing layer and the filter layer are in sliding contact with the inner wall of the reaction chamber. The reinforcing layer has multiple air ports, which are distributed in an array. The filter layer is used to filter single-walled carbon nanotubes. The reaction chamber is provided with an air inlet and an air outlet. The air inlet is connected to the air outlet of the gas circulation device, and the air outlet is connected to the air inlet of the gas circulation device. The air inlet is located above the second conveyor belt, and the air outlet is located between the two rollers.

[0012] In the device for continuous preparation of single-walled carbon nanotubes based on the electric arc method of the present invention, the scraping assembly includes a ring sleeved on the outside of the reaction cathode, the ring being in sliding contact with the reaction cathode, one side of the ring being fixed to the lifting end of a lifting rod, and the lifting rod being fixed to the top wall of the reaction chamber.

[0013] In the apparatus for continuous preparation of single-walled carbon nanotubes based on the electric arc method of the present invention, a first cooling pipe 6 and a second cooling pipe are provided on the reaction chamber. The first cooling pipe is fixed inside the reaction chamber and sleeved on the outside of the reaction cathode. The second cooling pipe is fixed on the outer wall of the reaction chamber and coaxially arranged with the anode feed hole. The second cooling pipe is arranged corresponding to the reaction anode. The inlets of the second cooling pipe and the first cooling pipe are connected to the outlet of the cooling chamber, and the outlets of the second cooling pipe and the first cooling pipe are connected to the inlet of the cooling chamber.

[0014] In the apparatus for continuous preparation of single-walled carbon nanotubes based on the electric arc method of the present invention, an observation window is provided on the reaction chamber.

[0015] Compared with the prior art, the present invention has the following advantages and technical effects: When the device of the present invention is working, a reaction anode on the switching mechanism is pushed into the reaction chamber by the pushing mechanism, and the reaction is started by powering on. After the reaction is set for a time, the power is stopped. At this time, the scraping component scrapes off the product accumulated on the reaction cathode and it falls into the collection component. At the same time, the pushing mechanism retracts, the switching mechanism switches to a new reaction anode, and the reaction anode is pushed into the reaction chamber by the pushing mechanism to start the reaction again.

[0016] The device of the present invention scrapes off the product on the reaction cathode through a scraping component and collects it through a collection component. At the same time, a new reaction anode is switched through a switching mechanism. The whole process is highly automated, realizing automatic collection of products and automatic replacement of reaction anodes, which significantly improves the overall efficiency of the process. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly described below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 for Figure 1 A magnified view of a section at point A in the middle; Figure 3 for Figure 1 A magnified view of a section at point B in the middle; Figure 4 for Figure 1 A magnified view of a section at point C; Figure 5 for Figure 1 Sectional view along the DD direction; The components are as follows: 1. Reaction chamber; 2. Observation window; 3. Air inlet; 4. Air outlet; 5. Flexible baffle; 6. First cooling pipe; 7. Collection box; 8. Cooling box; 9. End cap; 10. Reaction cathode; 11. Material box; 12. Push motor; 13. Connecting rod; 14. Slide cylinder; 15. Threaded rod; 16. Vertical plate; 17. Sleeve; 18. Switching motor; 19. Crossbar; 20. Rotating shaft; 21. Roller; 22. Gear; 23. Track; 24. Reinforcing layer; 25. Air inlet; 26. Slide rod; 27. First slide groove; 28. First magnetic block; 29. ​​Second magnetic block; 30. Mounting block; 31. Second slide groove; 32. Second slider; 33. Clearance groove; 34. Fixing block; 35. Second cooling pipe; 36. Anode feed hole; 37. Roller shaft; 38. Flexible scraper; 39. Filter layer; 40. First conveyor belt. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0020] Reference Figures 1 to 5 This invention discloses an apparatus for the continuous preparation of single-walled carbon nanotubes based on an electric arc method, comprising: a reaction chamber 1, a material box 11 disposed on one side of the reaction chamber 1, a switching mechanism and a pushing mechanism disposed inside the material box 11, a plurality of reaction anodes disposed on the switching mechanism, the reaction anodes located at the top being correspondingly disposed to the pushing mechanism, and an anode feed hole 36 opened on the outer wall of the reaction chamber 1, the anode feed hole 36 being correspondingly disposed to the reaction anodes located at the top. A reaction cathode 10 is detachably connected to the top of the reaction chamber 1. The reaction cathode 10 extends into the reaction chamber 1 and is positioned corresponding to the end of the reaction anode that extends into the reaction chamber 1. A scraping component is provided on the reaction cathode 10. A collection component is provided inside the reaction chamber 1 and is located at the bottom of the reaction chamber 1.

[0021] Multiple reaction anodes are managed by a switching mechanism. The feeding mechanism pushes the anodes into the reaction chamber 1, and the anode feed hole 36 allows the anodes to enter, realizing automatic replacement and continuous feeding of the reaction anodes, supporting the continuous preparation of single-walled carbon nanotubes by the electric arc method. The reaction cathode 10 generates an electric arc corresponding to the reaction anode. The scraping component removes cathode deposits, and the collection component collects the products. Carbon nanotubes are generated by the electric arc method and processed in a timely manner to maintain reaction efficiency and facilitate product collection.

[0022] The top of the reaction cathode 10 is detachably connected to an end cap 9, which is detachably connected to the reaction chamber 1. The reaction cathode 10 is connected to the reaction chamber 1 via the end cap 9.

[0023] The end cap 9 is used to fix the reaction cathode 10 and provides a detachable connection to facilitate the installation and maintenance of the reaction cathode 10.

[0024] In one alternative embodiment, the switching mechanism includes a support frame fixedly connected to the material box 11. Two rotating shafts 20 are fixedly connected to one side of the support frame, and the two rotating shafts 20 are located at both ends of the support frame. Rollers 21 are rotatably connected to each of the two rotating shafts 20. A first conveyor belt 40 is sleeved on the outside of the two rollers 21. Multiple sleeves 17 are fixedly connected to the outside of the first conveyor belt 40. The multiple sleeves 17 are arranged in a sequential and spaced manner. The reaction anode is detachably connected to the sleeve 17. The inner sidewall of the first conveyor belt 40 is provided with multiple toothed grooves at equal intervals in the circumferential direction. The toothed grooves are meshed with gears 22. The gears 22 are coaxially fixed to the output shaft of the switching motor 18, and the switching motor 18 is fixed to the support frame.

[0025] The switching mechanism drives the sleeve 17 to move via the first conveyor belt 40, and uses the second conveyor belt to circulate multiple reaction anodes, thereby realizing automatic switching and continuous supply of anodes.

[0026] Two tracks 23 are fixedly connected to the inner side wall of the first conveyor belt 40 in the circumferential direction. The two tracks 23 are symmetrically arranged on the opposite sides of the tooth groove. The roller 21 has a groove in the circumferential direction. The two tracks 23 are located in the groove and slide in contact with the opposite side walls of the groove.

[0027] This configuration effectively ensures the smooth operation of the first conveyor belt 40.

[0028] Switch motor 18 to a servo motor.

[0029] The support frame includes a vertical plate 16, two rotating shafts 20 and a switching motor 18, all of which are fixed to the vertical plate 16. The vertical plate 16 is fixed to the reaction chamber 1 by two crossbars 19.

[0030] In one alternative embodiment, a mounting block 30 is slidably connected inside the sleeve 17. The mounting block 30 has a mounting hole for mounting the reaction anode at one end facing the reaction chamber 1. A second sliding groove 31 is provided on the sleeve 17. The second sliding groove 31 is arranged along the length of the sleeve 17. A second slider 32 is slidably connected inside the second sliding groove 31. The second slider 32 is fixedly connected to the mounting block 30.

[0031] The mounting block 30 slides within the sleeve 17 via the second slide groove 31 and the second slider 32, allowing the anode to move axially and facilitating the feeding mechanism to advance the reaction anode.

[0032] In one alternative embodiment, the pushing mechanism includes a pushing motor 12, which is fixedly connected to the inner wall of the material box 11. A threaded rod 15 is coaxially fixedly connected to the output shaft of the pushing motor 12. A sliding rod 26 is threadedly connected to the threaded rod 15. A sliding cylinder 14 is sleeved on the outer side of the sliding rod 26. The sliding cylinder 14 is fixedly connected to the material box 11 by two connecting rods 13. A first sliding groove 27 is provided on the inner wall of the sliding cylinder 14. The first sliding groove 27 is arranged along the length direction of the sliding cylinder 14. A first slider is slidably connected in the first sliding groove 27. The first slider is fixedly connected to the outer wall of the sliding rod 26. One end of the sliding rod 26 extends out of the sliding cylinder 14 and is fixedly connected to a first magnetic block 28. The first magnetic block 28 is magnetically connected to a second magnetic block 29. The second magnetic block 29 is fixedly connected to the mounting block 30.

[0033] The pushing mechanism drives the threaded rod 15 to push the slide bar 26 through the push motor 12, and uses the magnetic block to connect the mounting block 30. The threaded drive is converted into linear motion, and the magnetic connection makes it easy to disengage, thus achieving precise anode advancement and easy operation.

[0034] In one alternative embodiment, an opening is provided on one side of the reaction chamber 1, the opening being located at the bottom of the reaction chamber 1. The collection assembly includes a collection box 7 detachably connected to the opening. The collection box 7 is adapted to the reaction chamber 1, with one end of the collection box 7 extending into the reaction chamber 1 and the other end of the collection box 7 closing the opening.

[0035] The collection box 7 is installed through an opening, providing a removable collection container for easy removal and cleaning of the product.

[0036] In one alternative embodiment, two roller shafts 37 are rotatably connected inside the reaction chamber 1. The two roller shafts 37 are parallel and symmetrically arranged, and their axes are located on the same horizontal plane. One of the roller shafts 37 extends out of the reaction chamber 1 and is coaxially fixed to the output shaft of a conveyor motor. The conveyor motor is fixed to the outer side wall of the reaction chamber 1. A second conveyor belt is sleeved on the outer side of the two roller shafts 37. A flexible scraper 38 is slidably contacted on the bottom surface of the second conveyor belt. The length direction of the flexible scraper 38 is perpendicular to the conveying direction of the second conveyor belt. The flexible scraper 38 is fixed to one of the inner side walls of the collection box 7.

[0037] The second conveyor belt is driven by roller 37, and the flexible scraper 38 scrapes off the product, continuously transporting and scraping the product, and automatically collecting the single-walled carbon nanotubes into the collection box 7.

[0038] Flexible baffles 5 are fixed to the opposite side walls of the reaction chamber 1. The two flexible baffles 5 are set horizontally and along the conveying direction of the second conveyor belt. The bottom end of the flexible baffles 5 slides in contact with the top surface of the second conveyor belt. In this way, the gap between the second conveyor belt and the inner wall of the reaction chamber 1 is sealed by the flexible baffles 5, so that most of the product falls on the second conveyor belt and is easy to collect.

[0039] Flexible baffle 5 seals the gap between the second conveyor belt and the box wall to prevent product leakage and improve collection efficiency.

[0040] In one alternative embodiment, the second conveyor belt includes a reinforcing layer 24 and a filter layer 39 located outside the reinforcing layer 24. Both the reinforcing layer 24 and the filter layer 39 are in sliding contact with the inner wall of the reaction chamber 1. The reinforcing layer 24 has multiple air ports 25 arranged in an array. The filter layer 39 is used to filter single-walled carbon nanotubes. The reaction chamber 1 is provided with an air inlet 3 and an air outlet 4. The air inlet 3 is connected to the air outlet of the gas circulation device, and the air outlet 4 is connected to the air inlet of the gas circulation device. The air inlet 3 is located above the second conveyor belt, and the air outlet 4 is located between the two rollers 37.

[0041] The air inlet 3 and air outlet 4 are connected to a gas circulation device to control the gas environment inside the reaction chamber 1, maintain suitable reaction conditions, and remove by-products.

[0042] The second conveyor belt filters the product through filter layer 39, while gas inlet 25 allows gas to pass through, separating gas and solid products, improving product purity and facilitating gas circulation. The gas is an inert gas, such as argon.

[0043] In one alternative embodiment, the scraping assembly includes a ring sleeved on the outside of the reaction cathode 10, the ring being in slidable contact with the reaction cathode 10, one side of the ring being fixed to the lifting end of a lifting rod, and the lifting rod being fixed to the top wall of the reaction chamber 1.

[0044] The scraping assembly moves the ring body via a lifting rod to scrape off cathode deposits mechanically, keeping the reaction cathode 10 clean and improving reaction efficiency.

[0045] In one alternative embodiment, the reaction chamber 1 is provided with a first cooling pipe 6 and a second cooling pipe 35. The first cooling pipe 6 is fixed inside the reaction chamber 1 and sleeved on the outside of the reaction cathode 10. The second cooling pipe 35 is fixed on the outer wall of the reaction chamber 1 and is coaxially arranged with the anode feed hole 36. The second cooling pipe 35 is arranged corresponding to the reaction anode. The inlets of the second cooling pipe 35 and the first cooling pipe 6 are connected to the outlet of the cooling chamber 8, and the outlets of the second cooling pipe 35 and the first cooling pipe 6 are connected to the inlet of the cooling chamber 8.

[0046] The first cooling pipe 6 and the second cooling pipe 35 circulate coolant through the cooling tank 8 to dissipate heat and lower the temperature, prevent overheating of the reaction, protect the equipment, and stabilize the reaction.

[0047] Both the first cooling pipe 6 and the second cooling pipe 35 are connected to the cooling box 8 through pipes. The two pipes connecting the second cooling pipe 35 are fixed in the fixing block 34. The fixing block 34 is fixed on the outer wall of the reaction box 1. The fixing block 34 is located in the clearance groove 33. The clearance groove 33 is opened on the material box 11.

[0048] The pipe is fixed by the fixing block 34, and the clearance groove 33 provides space to ensure that the pipe is installed firmly, avoids interference with the material box 11, and ensures the normal operation of the cooling system.

[0049] In one alternative, an observation window 2 is provided on the reaction chamber 1.

[0050] Observation window 2 is located on reaction chamber 1, providing a visual channel for easy monitoring of the internal reaction process.

[0051] In the description of this invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this invention, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0052] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Various modifications and improvements made by those skilled in the art to the technical solutions of the present invention without departing from the spirit of the present invention should fall within the protection scope defined by the claims of the present invention.

Claims

1. An apparatus for the continuous preparation of single-walled carbon nanotubes based on an electric arc method, characterized in that, include: A reaction chamber (1) is provided with a material box (11) on one side. A switching mechanism and a pushing mechanism are provided inside the material box (11). Multiple reaction anodes are provided on the switching mechanism. The reaction anode at the top is correspondingly arranged with the pushing mechanism. An anode feed hole (36) is opened on the outer wall of the reaction chamber (1). The anode feed hole (36) is correspondingly arranged with the reaction anode at the top. The top of the reaction chamber (1) is detachably connected to a reaction cathode (10). The reaction cathode (10) extends into the reaction chamber (1) and is positioned corresponding to one end of the reaction anode that extends into the reaction chamber (1). A scraping assembly is provided on the reaction cathode (10). A collection assembly is provided inside the reaction chamber (1). The collection assembly is located at the bottom of the reaction chamber (1).

2. The apparatus for continuous preparation of single-walled carbon nanotubes based on the electric arc method according to claim 1, characterized in that: The switching mechanism includes a support frame, which is fixed inside the material box (11). Two rotating shafts (20) are fixed to one side of the support frame. The two rotating shafts (20) are located at both ends of the support frame. Rollers (21) are rotatably connected to both rotating shafts (20). A first conveyor belt (40) is sleeved on the outside of the two rollers (21). Multiple sleeves (17) are fixed to the outside of the first conveyor belt (40). The multiple sleeves (17) are arranged in sequence at intervals. The reaction anode is detachably connected inside the sleeves (17). The inner sidewall of the first conveyor belt (40) is provided with a plurality of toothed grooves at equal intervals in the circumferential direction. The toothed grooves are meshed with gears (22). The gears (22) are coaxially fixed to the output shaft of the switching motor (18). The switching motor (18) is fixed to the support frame.

3. The apparatus for continuous preparation of single-walled carbon nanotubes based on the electric arc method according to claim 2, characterized in that: An installation block (30) is slidably connected inside the sleeve (17). The installation block (30) has an installation hole for installing the reaction anode at one end facing the reaction tank (1). A second sliding groove (31) is provided on the sleeve (17). The second sliding groove (31) is arranged along the length direction of the sleeve (17). A second slider (32) is slidably connected inside the second sliding groove (31). The second slider (32) is fixedly connected to the installation block (30).

4. The apparatus for continuous preparation of single-walled carbon nanotubes based on the electric arc method according to claim 3, characterized in that: The pushing mechanism includes a pushing motor (12), which is fixedly connected to the inner wall of the material box (11). A threaded rod (15) is coaxially fixed to the output shaft of the pushing motor (12). A sliding rod (26) is threadedly connected to the threaded rod (15). A sliding cylinder (14) is sleeved on the outer side of the sliding rod (26). The sliding cylinder (14) is fixedly connected to the material box (11) by two connecting rods (13). An opening is made on the inner wall of the sliding cylinder (14). There is a first slide groove (27), which is arranged along the length direction of the slide cylinder (14). A first slider is slidably connected in the first slide groove (27). The first slider is fixed to the outer wall of the slide rod (26). One end of the slide rod (26) extends out of the slide cylinder (14) and is fixed to a first magnetic block (28). The first magnetic block (28) is magnetically connected to a second magnetic block (29). The second magnetic block (29) is fixed to the mounting block (30).

5. The apparatus for continuous preparation of single-walled carbon nanotubes based on the electric arc method according to claim 1, characterized in that: An opening is provided on one side of the reaction chamber (1), and the opening is located at the bottom of the reaction chamber (1). The collection assembly includes a collection box (7) that is detachably connected to the opening. The collection box (7) is adapted to the reaction chamber (1). One end of the collection box (7) extends into the reaction chamber (1), and the other end of the collection box (7) closes the opening.

6. The apparatus for continuous preparation of single-walled carbon nanotubes based on the electric arc method according to claim 5, characterized in that: Two rollers (37) are rotatably connected inside the reaction chamber (1). The two rollers (37) are parallel and symmetrically arranged. The axes of the two rollers (37) are located on the same horizontal plane. One of the rollers (37) extends out of the reaction chamber (1) and is coaxially fixed to the output shaft of the conveying motor. The conveying motor is fixed to the outer wall of the reaction chamber (1). A second conveyor belt is sleeved on the outer side of the two rollers (37). A flexible scraper (38) slides in contact with the bottom surface of the second conveyor belt. The length direction of the flexible scraper (38) is perpendicular to the conveying direction of the second conveyor belt. The flexible scraper (38) is fixed to one of the inner walls of the collection box (7).

7. The apparatus for continuous preparation of single-walled carbon nanotubes based on the electric arc method according to claim 6, characterized in that: The second conveyor belt includes a reinforcing layer (24) and a filter layer (39) located outside the reinforcing layer (24). Both the reinforcing layer (24) and the filter layer (39) are in sliding contact with the inner wall of the reaction chamber (1). The reinforcing layer (24) has multiple air ports (25) arranged in an array. The filter layer (39) is used to filter single-walled carbon nanotubes. The reaction chamber (1) is provided with an air inlet (3) and an air outlet (4). The air inlet (3) is connected to the air outlet of the gas circulation device, and the air outlet (4) is connected to the air inlet of the gas circulation device. The air inlet (3) is located above the second conveyor belt, and the air outlet (4) is located between the two rollers (37).

8. The apparatus for continuous preparation of single-walled carbon nanotubes based on the electric arc method according to claim 1, characterized in that: The scraping assembly includes a ring sleeved on the outside of the reaction cathode (10), the ring being in sliding contact with the reaction cathode (10), one side of the ring being fixed to the lifting end of the lifting rod, and the lifting rod being fixed to the top wall of the reaction chamber (1).

9. The apparatus for continuous preparation of single-walled carbon nanotubes based on the electric arc method according to claim 1, characterized in that: The reaction chamber (1) is provided with a first cooling pipe 6 and a second cooling pipe (35). The first cooling pipe (6) is fixed inside the reaction chamber (1) and sleeved on the outside of the reaction cathode (10). The second cooling pipe (35) is fixed on the outer wall of the reaction chamber (1) and coaxially arranged with the anode feed hole (36). The second cooling pipe (35) is arranged corresponding to the reaction anode. The inlets of the second cooling pipe (35) and the first cooling pipe (6) are connected to the outlet of the cooling chamber (8). The outlets of the second cooling pipe (35) and the first cooling pipe (6) are connected to the inlet of the cooling chamber (8).

10. The apparatus for continuous preparation of single-walled carbon nanotubes based on the electric arc method according to claim 1, characterized in that: An observation window (2) is provided on the reaction chamber (1).

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