Material conveying device for carbon nanotube production

Abstract

The application belongs to the technical field of carbon nanotube preparation, and particularly relates to a material conveying device for carbon nanotube preparation, which comprises a workbench, an arc discharge device is fixedly supported on the workbench through a support frame, a guide hopper is sealingly communicated with the lower portion of a vacuum chamber of the arc discharge device, a storage tube is arranged on the lower end surface of the guide hopper, a collecting cylinder is detachably clamped in the storage tube through a clamping and sealing assembly, a transfer conveying assembly is arranged on the workbench, and the transfer conveying assembly is used for transferring and conveying the collecting cylinder collecting the material from the storage tube for replacement; the material conveying device can automatically transfer and replace the collecting cylinder collecting the powder material in the guide hopper below the vacuum chamber, so that the preparation efficiency of the arc discharge device for the carbon fiber tube powder is improved, and the safety hazard to the workers is avoided.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of carbon nanotube preparation, and particularly relates to a material conveying device for carbon nanotube preparation. BACKGROUND

[0002] Carbon nanotubes (CNT) have excellent mechanical properties and adjustable electrical properties, so that the carbon nanotubes have significant application potential in nanoelectronic devices, field emission technology, biological drug loading, hydrogen storage technology and many other fields.

[0003] The application number is CN202020591484.2, and the patent name is a continuous controllable single-walled carbon nanotube arc discharge equipment. The equipment comprises a chamber, a vacuum pump communicated with the chamber, an anode rod automatic conveying device rotatably arranged on the upper part of the vacuum pump and inserted into the chamber, a magnetic field induction device arranged in the chamber, a powder collecting device arranged at the lower part of the chamber, and a graphite cathode array rotating device rotatably arranged in the chamber.

[0004] The existing arc discharge equipment directly falls into the powder collecting box after the preparation of the carbon nanotube powder material, and then the processing personnel need to open the vacuum chamber to open the powder collecting box placed at the bottom of the vacuum chamber, and then the prepared carbon nanotube powder material can be taken out and stored. The carbon nanotube powder material collected below the vacuum chamber cannot be automatically discharged and transported. Obviously, this kind of way of frequently opening the vacuum chamber to take out the prepared carbon nanotube powder material not only affects the continuous preparation efficiency of the carbon nanotube powder by the arc discharge equipment, but also causes certain safety hazards to the processing personnel near the magnetic field and discharge arc generated in the vacuum chamber. SUMMARY

[0005] To solve the above technical problems, the application is realized by the following technical scheme:

[0006] The application is a material conveying device for carbon nanotube preparation, which comprises a workbench, an arc discharge equipment fixed and supported by a support frame above the workbench, a material guide hopper sealingly communicated below the vacuum chamber of the arc discharge equipment, a storage tube arranged on the lower end surface of the material guide hopper, a material collecting cylinder detachably clamped in the storage tube by a clamping and sealing assembly, a transfer conveying assembly arranged on the workbench, and the transfer conveying assembly is used to transfer and convey the material collecting cylinder collecting the material from the storage tube and replace it.

[0007] Further, the clamping and sealing assembly comprises arc-shaped elastic strips, arc-shaped sliding strips, arc-shaped rubber strips, a gas guide hose and a breather pipe, the inner wall of the storage tube is annularly provided with an annular groove, and a plurality of arc-shaped elastic strips with cavity structures are arranged in the annular groove in a circumferential array, the arc-shaped elastic strips are made of elastic film material, the outer arc surface of the arc-shaped elastic strips is connected with the inner groove wall of the annular groove, and the upper and lower surfaces of the arc-shaped elastic strips are slidably attached to the upper and lower groove walls of the annular groove, an arc-shaped sliding strip is connected to the inner arc surface of each arc-shaped elastic strip, the upper and lower surfaces of the arc-shaped sliding strip are slidably attached to the upper and lower surfaces of the annular groove, an arc-shaped rubber strip is arranged on the inner side of each arc-shaped sliding strip, a plurality of arc-shaped rubber strips are arranged to surround the outer surface of the material collecting cylinder in the storage tube and are slidably clamped and attached to the outer surface, the arc-shaped elastic strips with cavity structures are connected to each other through the gas guide hose, the breather pipe is fixed to the storage tube and the one end of the breather pipe is connected to the arc-shaped elastic strips through the annular groove, and the other end of the breather pipe is connected to the air pump fixed to the workbench.

[0008] Further, the clamping and sealing assembly further comprises blocking blocks and elastic sealing films, the arc-shaped ends of each arc-shaped elastic strip are slidably attached to the blocking blocks, and the blocking blocks are fixedly arranged in the annular groove, and the upper end portions of the arc-shaped sliding strips and the arc-shaped rubber strips are connected by the elastic sealing films.

[0009] Further, the transferring and conveying assembly comprises a rotating disc, a rotating ring, a rotating shaft, support columns, a support cross strip and a suction disc assembly, the workbench is provided with a rotating groove hole in the top surface, the rotating disc is rotatably arranged in the rotating groove hole through the rotating ring, a plurality of storage groove holes are arranged in a circumferential array on the rotating disc, a material collecting cylinder is slidably inserted into each storage groove hole, the rotating shaft is fixedly arranged at the center of the rotating disc, the bottom end surface of the rotating shaft is connected to the output shaft of the driving motor, the driving motor is supported by the vertical support columns, the support columns are fixedly supported by the support cross strip fixedly arranged below the workbench, and the lower end of the storage tube is aligned with the storage groove hole of the rotating disc.

[0010] Further, the suction disc assembly comprises a vacuum suction disc, a suction pipe and an electric push rod, the lower end surface of the vacuum suction disc is connected to the suction pipe, the suction pipe is connected to the vacuum pump fixed to the workbench through the suction pipe, the fixed section of the electric push rod is fixed to the support cross strip, the piston rod of the electric push rod is sealingly connected to the suction pipe, and the vacuum suction disc is located directly below the lower end of the storage tube.

[0011] Further, the material collecting cylinder comprises a cylinder body, an annular folded edge and an elastic rubber ring, the annular folded edge is arranged at the upper end of the cylinder body, the elastic rubber ring is arranged at the outer edge of the annular folded edge, the elastic rubber ring is elastically pressed against the inner wall of the storage tube, and the diameter of the annular folded edge is greater than the diameter of the storage groove hole.

[0012] Further, the inner sealing of the collecting cylinder is provided with a collecting cup, a plurality of clamping grooves are arranged on the circumferential array of the annular folded edge, and a plurality of elastic clamping strips are arranged on the circumferential array of the lower ring surface of the bending of the collecting cup.

[0013] Further, the upper end surface of the storage groove hole is provided with a plurality of supporting blocks, and the plurality of supporting blocks are in contact with the annular folded edge of the collecting cylinder.

[0014] The present application has the following advantages:

[0015] 1. The present application sets a transfer conveying assembly on the workbench, the upward movement of the suction cup assembly can support and store the collecting cylinder inserted into the storage pipe in the storage groove hole of the rotating disc, at this time the suction cup assembly is separated from the suction and fixation of the collecting cylinder, then the rotation of the rotating disc can transfer the collecting cylinder collecting powder material from below the storage pipe, and the idle collecting cylinder is also rotated below the pipe opening of the storage pipe, then the suction cup assembly continues to adsorb the collecting cylinder and pushes it upward into the storage pipe for sealing and clamping, thereby facilitating the automatic transfer and replacement of the collecting cylinder collecting powder material in the material guide hopper below the vacuum chamber, thereby improving the efficiency of the arc discharge equipment for carbon fiber pipe powder preparation, and also does not cause safety hazards to the workers.

[0016] 2. The present application sets a clamping and sealing assembly in the storage pipe below the vacuum chamber and cooperates with the collecting cylinder, the circular ring surrounded by a plurality of arc-shaped rubber blocks is clamped on the outer ring surface of the collecting cylinder inserted into the storage pipe under the pushing of the radial swelling of a plurality of arc-shaped elastic strips, and at this time the elastic sealing film connected on the adjacent two arc-shaped sliding strips can seal the gap formed thereby, so that a plurality of arc-shaped rubber strips can form a sealed circular ring in the storage pipe to seal and clamp the collecting cylinder, and the elastic rubber ring on the outer ring surface of the annular folded edge of the upper port of the collecting cylinder can be extruded and fitted with the inner wall of the storage pipe to achieve the effect of secondary sealing, thereby preventing the vacuum chamber below from being unable to be vacuumized due to the gap, thereby affecting the preparation effect of the arc discharge equipment for carbon fiber pipe powder, and thereby affecting the rapid and efficient transfer and conveying of the material conveying device for the powder material prepared in the vacuum chamber.

[0017] Of course, implementing any product of the present application does not necessarily need to achieve all the advantages described above at the same time. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed for the description of the embodiments will be briefly introduced. Obviously, the drawings described below are only some of the embodiments of the present application, and for those skilled in the art, other drawings can be obtained without creative labor based on these drawings.

[0019] Figure 1 The overall structure schematic diagram of the embodiments of the present application;

[0020] Figure 2 The structure schematic diagram of the clamping and sealing assembly of the embodiments of the present application;

[0021] Figure 3 The structure schematic diagram of the transfer and conveying assembly of the embodiments of the present application;

[0022] Figure 4 The cross-sectional view of the storage tube of the embodiments of the present application;

[0023] Figure 5 The cross-sectional view of the material collecting cylinder of the embodiments of the present application.

[0024] In the drawings: 1, workbench; 2, electric arc discharge device; 21, vacuum chamber; 3, material guide hopper; 31, storage tube; 32, annular groove; 4, clamping and sealing assembly; 41, arc-shaped elastic strip; 42, arc-shaped sliding strip; 43, arc-shaped rubber strip; 44, air guide hose; 45, air pipe; 46, blocking block; 47, elastic sealing film; 5, transfer and conveying assembly; 51, rotating disc; 511, storage groove hole; 52, rotating ring; 53, rotating shaft; 54, support column; 55, support cross strip; 6, suction disc assembly; 61, vacuum suction disc; 62, suction pipe; 63, electric push rod; 7, material collecting cylinder; 71, cylinder body; 72, annular folded edge; 73, elastic rubber ring; 74, clamping groove; 8, collecting cup; 81, elastic clamping strip; 9, support block. Embodiment

[0025] The technical solutions of the embodiments of the present application will be described clearly and completely below in combination with the drawings of the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor are within the protection scope of the present application.

[0026] Please refer to Figures 1-5As shown, the present invention is a carbon nanotube spare material conveying device, including a workbench 1. An arc discharge device 2 is fixedly supported on the workbench 1 by a support frame. A guide hopper 3 is sealed and connected below the vacuum chamber 21 of the arc discharge device 2. A storage tube 31 is provided on the lower end face of the guide hopper 3. A receiving cylinder 7 is detachably clamped in the storage tube 31 by a clamping sealing assembly 4. A transfer conveying assembly 5 is provided on the workbench 1. The transfer conveying assembly 5 is used to transfer and convey the receiving cylinder 7 containing the collected material from the storage tube 31 for replacement.

[0027] In the design scheme of this invention, when the arc discharge device 2 is used to prepare carbon nanotube powder, a guide hopper 3 and a storage tube 31 are sealed below the vacuum chamber 21. When the receiving cylinder 7 needs to be placed into the storage tube 31 to collect the powder material prepared by the arc discharge device 2, the operator controls the transfer conveying component 5 on the workbench 1 to push the receiving cylinder 7 upward into the storage tube 31. Then, the clamping and sealing component 4 set in the storage tube 31 clamps and seals the receiving cylinder 7. Then, through the operation of the arc discharge device 2, the powder material prepared in the vacuum chamber 21 can fall into the receiving cylinder 7 through the guide hopper 3. When the powder material collected in the receiving cylinder 7 reaches the set amount, the operator stops the operation of the arc discharge device 2. Once the rated or standard air pressure is reached, the operator controls the transfer conveying component 5 to extend into the storage tube 31 to support and adsorb the receiving cylinder 7. Then, the operator controls the clamping and sealing component 4 to disengage from the receiving cylinder 7. The transfer conveying component 5 then disengages from the storage tube 31, causing the adsorbed receiving cylinder 7 to descend to the worktable 1 and be conveyed away. A new receiving cylinder 7 is then lifted upwards and conveyed into the storage tube 31, where it is clamped and sealed by the clamping and sealing component 4. The arc discharge device 2 then continues to operate to prepare and collect carbon nanotube powder materials. This eliminates the need for the operator to frequently open the vacuum chamber 21 to reach inside and retrieve the carbon nanotube powder materials collected in the powder collection box below, thereby improving the preparation efficiency of carbon nanotube powder materials.

[0028] As an embodiment of the present application, the clamping and sealing assembly 4 comprises arc-shaped elastic strips 41, arc-shaped sliding strips 42, arc-shaped rubber strips 43, air guide hoses 44 and air pipes 45, the inner wall of the storage tube 31 is annularly provided with an annular groove 32, and a plurality of arc-shaped elastic strips 41 with cavity structures are arranged in the annular groove 32 in a circumferential array, the arc-shaped elastic strips 41 are made of elastic film material, the outer arc surface of the arc-shaped elastic strips 41 is connected with the inner groove wall of the annular groove 32, and the upper and lower surfaces of the arc-shaped elastic strips 41 are slidingly attached to the upper and lower groove walls of the annular groove 32, the inner arc surface of each arc-shaped elastic strip 41 is connected with an arc-shaped sliding strip 42, the upper and lower surfaces of the arc-shaped sliding strip 42 are slidingly attached to the upper and lower surfaces of the annular groove 32, the inner side surface of each arc-shaped sliding strip 42 is provided with an arc-shaped rubber strip 43, a plurality of arc-shaped rubber strips 43 are arranged to surround the outer surface of the receiving cylinder 7 in the storage tube 31 in a circular sliding clamping manner, the plurality of arc-shaped elastic strips 41 with cavity structures are connected with each other through the air guide hoses 44, the storage tube 31 is fixed with the air pipes 45, one end of the air pipes 45 is connected with the arc-shaped elastic strips 41 through the annular groove 32, and the other end of the air pipes 45 is connected with the air pump fixed on the workbench 1.

[0029] In the scheme designed in the present application, when the collecting cylinder 7 is inserted into the storage tube 31, the processing personnel controls the air pump of the workbench 1 to work through the control system, and the air pump can deliver high-pressure gas into the air pipe 45 through the gas delivery pipe. At this time, the high-pressure gas will be filled into the arc-shaped elastic strips 41 arranged in the annular groove 32, and the arc-shaped elastic strips 41 are connected through the air hose 44. Therefore, the continuously filled high-pressure gas is distributed to the arc-shaped elastic strips 41, which will make the arc-shaped elastic strips 41 expand radially in the annular groove 32 and push the arc-shaped sliding strips 42 to move from the annular groove 32 to the outer circumferential surface of the collecting cylinder 7. At this time, the arc-shaped sliding strips 42 will drive the arc-shaped rubber strips 43 surrounding the circle to move close to the outer circumferential surface of the collecting cylinder 7 and tightly adhere to the outer circumferential surface of the collecting cylinder 7, so as to clamp the collecting cylinder 7 in the storage tube 31, thereby facilitating the powder material prepared in the vacuum chamber 21 to accurately fall into the collecting cylinder 7 for collection and storage. When the collecting cylinder 7 collects a certain amount of powder material and needs to be taken out of the storage tube 31, the processing personnel stops the work of the electric arc discharge device 2 at this time, so that the vacuum chamber 21 reaches the rated air pressure, and then the transfer conveying assembly 5 is extended into the storage tube 31 to adsorb and fix the collecting cylinder 7, and then the air pump is controlled to extract the high-pressure gas in the arc-shaped elastic strips 41 through the air pipe 45. At this time, the radially expanded arc-shaped elastic strips 41 will continuously shrink in the annular groove 32, which will drive the arc-shaped sliding strips 42 to shrink into the annular groove 32, thereby facilitating the arc-shaped rubber strips 43 to separate from the outer circumferential surface of the collecting cylinder 7, and facilitating the transfer conveying assembly 5 to take out the collecting cylinder 7 containing the powder material from the storage tube 31 to transfer and convey the powder material, thereby improving the preparation efficiency of the carbon nanotube powder by the electric arc discharge device 2.

[0030] As an embodiment of the present application, the clamping and sealing assembly 4 further comprises a blocking block 46 and an elastic sealing film 47. The arc-shaped two end surfaces of each arc-shaped elastic strip 41 are slidably attached with the blocking block 46, and the blocking block 46 is fixedly arranged in the annular groove 32. The upper surface end portions of the adjacent two arc-shaped sliding strips 42 and arc-shaped rubber strips 43 are connected through the elastic sealing film 47.

[0031] In the scheme designed in the application, the blocking block 46 is arranged in the annular groove 32, which can block and limit the two end portions of the arc-shaped elastic strip 41, prevent the two end portions of the arc-shaped elastic strip 41 from being inflated and expanded when the high-pressure gas is filled into the cavity structure, and further affect the pushing force of the arc-shaped elastic strip 41 on the arc-shaped sliding strip 42 in the radial inflation and expansion; in order to prevent the gap between the adjacent two arc-shaped sliding strips 42 after the radial movement, which causes the carbon nanotube powder in the vacuum chamber 21 to be unable to be normally prepared, when the plurality of arc-shaped sliding strips 42 are pushed by the plurality of arc-shaped elastic strips 41 in the radial inflation and expansion to approach the outer circumferential surface of the receiving cylinder 7, the elastic sealing film 47 connected between the adjacent two arc-shaped sliding strips 42 is shrunk at this time, and then when the plurality of arc-shaped rubber strips 43 are clamped and attached to the outer circumferential surface of the receiving cylinder 7, the plurality of elastic sealing films 47 seal the gap between the adjacent two arc-shaped sliding strips 42 at this time, preventing the vacuum chamber 21 from being subjected to the vacuumizing treatment again, and the gap between the plurality of arc-shaped sliding strips 42 cannot be subjected to the vacuumizing operation; and when the plurality of arc-shaped rubber strips 43 are expanded and moved in the left annular groove 32, the elastic sealing film 47 is stretched and expanded at this time.

[0032] As an embodiment of the application, the transfer conveying assembly 5 comprises a rotating disc 51, a rotating ring 52, a rotating shaft 53, a support column 54, a support cross strip 55 and a suction disc assembly 6, a rotating groove hole is formed in the table top of the workbench 1, the rotating disc 51 is rotatably arranged in the rotating groove hole through the rotating ring 52, a plurality of storage groove holes 511 are circumferentially arranged in the rotating disc 51, the receiving cylinder 7 is slidably inserted into the storage groove hole 511, the rotating shaft 53 is fixed at the center position of the rotating disc 51, the bottom end surface of the rotating shaft 53 is connected with the output shaft of the driving motor, the driving motor is supported by the vertical support column 54, the support column 54 is fixed and supported by the horizontal support cross strip 55 fixed below the workbench 1, and the lower port of the storage tube 31 is aligned with the storage groove hole 511 on the rotating rotating disc 51;

[0033] In the scheme designed in the application, when it is needed to take out the material collecting cylinder 7 collecting powder material from the storage tube 31, at this time, the processing personnel control the upper end of the suction cup assembly 6 to be inserted into the storage tube 31 through the storage groove hole 511 upward to adsorb and fix the bottom of the material collecting cylinder 7, at this time, the clamping and sealing assembly 4 is separated from the clamping of the material collecting cylinder 7, then the suction cup assembly 6 is controlled to be lowered, so as to drive the material collecting cylinder 7 to be lowered into the empty storage groove hole 511, so that the storage groove hole 511 can support the material collecting cylinder 7 collecting powder material, then the suction cup assembly 6 is separated from the adsorption and fixation of the material collecting cylinder 7, then the driving motor fixed and supported by the supporting cross strip 55 and the supporting column 54 is controlled to work, so that the output shaft drives the rotating disc 51 to rotate in the rotating groove hole through the rotating shaft 53, and the rotating ring 52 can be supported to rotate by the rotating disc 51, so that the empty material collecting cylinder 7 placed in the other storage groove hole 511 is rotated to the front of the storage tube 31, and the material collecting cylinder 7 collecting powder material is rotated to be separated from the front of the storage tube 31, at this time, the suction cup assembly 6 is continuously controlled to be adsorbed to the front of the empty material collecting cylinder 7, then the suction cup assembly 6 is raised upward, so as to drive the empty material collecting cylinder 7 to be raised from the storage groove hole 511 to the storage tube 31, and then the clamping and sealing assembly 4 is clamped and sealed, then the processing personnel can take out the material collecting cylinder 7 collecting powder material from the storage groove hole 511, so as to facilitate the transfer and storage of the collected powder material, so that the powdered material of carbon nanotubes prepared by the electric arc discharge device 2 can be automatically transferred, transported and stored from the vacuum chamber 21, and the efficiency of the electric arc discharge device 2 in preparing carbon nanotubes can be improved.

[0034] As an embodiment of the application, the suction cup assembly 6 comprises a vacuum suction cup 61, a suction pipe 62 and an electric push rod 63, the lower end surface of the vacuum suction cup 61 is communicated with the suction pipe 62, the suction pipe 62 is communicated with the vacuum pump fixed on the workbench 1 through a suction pipe, the fixed section of the electric push rod 63 is fixed on the supporting cross strip 55, and the piston rod of the electric push rod 63 is sealingly connected with the suction pipe 62, and the vacuum suction cup 61 is located directly below the lower end of the storage tube 31.

[0035] In the scheme designed in the application, when it is needed to take out the collecting cylinder 7 from the storage tube 31, at this time the piston rod of the electric push rod 63 is controlled to extend, so that it drives the vacuum suction cup 61 to pass through the storage groove hole 511 and insert into the storage tube 31 upward, when the vacuum suction cup 61 contacts with the bottom end face of the collecting cylinder 7, at this time the vacuum pump works, and acts on the vacuum suction cup 61 through the suction pipe 62, so that the vacuum suction cup 61 can be adsorbed and fixed to the lower bottom face of the collecting cylinder 7, then the clamping and sealing assembly 4 is controlled to be separated from the clamping of the collecting cylinder 7, at this time the piston rod of the electric push rod 63 is retracted, so that it drives the collecting cylinder 7 to slide out from the storage tube 31 and drop into the storage groove hole 511 through the vacuum suction cup 61, and makes the upper end of the collecting cylinder 7 supported to the upper end face of the storage groove hole 511, then the vacuum pump and the suction pipe 62 are separated from the action on the vacuum suction cup 61, so that the vacuum suction cup 61 is separated from the adsorption and fixation of the collecting cylinder 7, at this time the rotation of the rotating disc 51 will drive the collecting cylinder 7 storing the powder material to rotate and separate from below the storage tube 31, and the idle collecting cylinder 7 will be rotated to be directly below the storage tube 31, then the vacuum suction cup 61 is continued to be adsorbed to the lower bottom face of the idle collecting cylinder 7, the piston rod of the electric push rod 63 is extended to push the idle collecting cylinder 7 to rise into the storage tube 31, and then the clamping and sealing assembly 4 is used for clamping and sealing fixation of the collecting cylinder 7, then the vacuum suction cup 61 is separated from the adsorption of the collecting cylinder 7 fixed in the storage tube 31, the piston rod of the electric push rod 63 is retracted to drive the vacuum suction cup 61 to drop below the rotating disc 51, and then the electric arc discharge equipment 2 continues to work to make the prepared carbon nanotube powder material fall into the collecting cylinder 7 for collection, and then the transfer and conveying assembly 5 is used for transferring and conveying away from the vacuum chamber 21, so as to accelerate the preparation efficiency of the carbon nanotube by the electric arc discharge equipment 2.

[0036] As an embodiment of the application, the collecting cylinder 7 comprises a cylinder body 71, an annular folded edge 72 and an elastic rubber ring 73, the annular folded edge 72 is arranged at the upper cylinder opening of the cylinder body 71, the elastic rubber ring 73 is arranged at the outer edge of the annular folded edge 72, the elastic rubber ring 73 is elastically extruded on the inner wall of the storage tube 31, and the diameter of the annular folded edge 72 is greater than the diameter of the storage groove hole 511.

[0037] In the scheme designed in the application, when the receiving cylinder 7 is lifted into the storage tube 31, the elastic rubber ring 73 on the outer circumferential surface of the annular folded edge 72 at the upper end of the receiving cylinder 7 is elastically pressed against the inner wall of the storage tube 31. As the cylinder body 71 continues to move upward, the elastic rubber ring 73 is further pressed against the arc-shaped rubber strips 43, so that the outer circumferential surface of the cylinder body 71 is clamped between the arc-shaped rubber strips 43, and the elastic rubber ring 73 is pressed and fitted to the inner wall of the storage tube 31, so that the upper end folded edge surface of the receiving cylinder 7 can be tightly fitted to the inner wall of the storage tube 31, thereby further improving the sealing performance of the vacuum chamber 21, preventing external air from entering the vacuum chamber 21 through the gap between the storage tube 31 and the receiving cylinder 7 when the vacuum chamber 21 is being vacuumized. When the receiving cylinder 7 is lowered into the storage groove hole 511, the annular folded edge 72 is supported on the upper surface of the storage groove hole 511, thereby facilitating the support of the receiving cylinder 7 inserted into the storage groove hole 511, so that the rotating disc 51 can drive the receiving cylinders 7 to rotate synchronously.

[0038] As an embodiment of the application, the receiving cylinder 7 is internally and sealingly provided with a collecting cup 8, a plurality of clamping grooves 74 are arranged in a circumferential array on the annular folded edge 72, and a plurality of elastic clamping strips 81 are arranged in a circumferential array along the lower circumferential surface of the bending of the collecting cup 8, and the elastic clamping strips 81 are clamped into the clamping grooves 74.

[0039] In the scheme designed in the application, when the processing personnel take out the powder material collected in the receiving cylinder 7, part of the powder material will adhere to the inner wall of the receiving cylinder 7. Therefore, when the receiving cylinder 7 needs to be pushed into the storage tube 31, the processing personnel can first insert the special collecting cup 8 for carbon nanotube powder into the receiving cylinder 7, then clamp the elastic clamping strips 81 into the clamping grooves 74, and make the bottom end of the elastic clamping strips 81 protrude out of the clamping grooves 74, so as to fix the special collecting cup 8 to the inner wall of the receiving cylinder 7, and then insert the receiving cylinder 7 into the storage tube 31. At this time, the powder material prepared in the vacuum chamber 21 will directly fall into the collecting cup 8 for collection. When the receiving cylinder 7 is taken out from the storage tube 31 and placed in the storage groove hole 511 of the rotating disc 51, and is rotated to be separated from the storage tube 31 from below, the processing personnel can press the protruding elastic clamping strips 81 to make the collecting cup 8 separate from the receiving cylinder 7, and then take out the collecting cup 8 from the receiving cylinder 7. In this way, the powder material will not adhere to the inner wall of the receiving cylinder 7, and the receiving cylinder 7 does not need to be cleaned, thereby further improving the efficiency of transporting and conveying the powder material.

[0040] As an embodiment of the application, a plurality of support blocks 9 are arranged in a circumferential array on the upper end surface of the storage groove hole 511, and the support blocks 9 are in contact with the annular folded edge 72 of the receiving cylinder 7.

[0041] In the scheme designed in the application, when the barrel body 71 of the collecting cylinder 7 is lowered into the storage groove hole 511, at this time the plurality of supporting blocks 9 will support the lower edge of the annular folded edge 72, and then the vacuum suction cup 61 continues to move downward, at this time the plurality of supporting blocks 9 will extrude the plurality of elastic clamping strips 81 extending from the lower edge of the annular folded edge 72, so that the plurality of elastic clamping strips 81 will partially extend from the plurality of clamping grooves 74, so that the collecting cup 8 can be separated from the inner wall of the collecting cylinder 7, then the vacuum suction cup 61 is separated from the suction and fixation of the collecting cylinder 7, the rotating disc 51 rotates to drive the collecting cylinder 7 to rotate and separate from the storage pipe 31, so that the processing personnel can quickly take out the collecting cup 8 containing the powder material from the collecting cylinder 7, and then place and store the collecting cup 8.

[0042] Working principle:

[0043] When the arc discharge device 2 is needed to be used to prepare carbon nanotube powder, the vacuum chuck 61 is adsorbed to the lower bottom surface of the idle collecting cylinder 7, the piston rod of the electric push rod 63 is extended to push the idle collecting cylinder 7 to rise into the storage tube 31, at this time the processing personnel control the workbench 1 line air pump work through the control system, the air pump can deliver high pressure gas into the air pipe 45 through the gas conveying pipe, at this time the high pressure gas will be filled into the arc-shaped elastic strip 41 arranged in the annular groove 32, and the plurality of arc-shaped elastic strips 41 are connected through the air hose 44, therefore, the continuously filled high pressure gas is shunted to the plurality of arc-shaped elastic strips 41, which can make the plurality of arc-shaped elastic strips 41 expand radially in the annular groove 32 to push the plurality of arc-shaped sliding strips 42 to move from the annular groove 32 to the outer ring surface of the collecting cylinder 7, and at this time the plurality of arc-shaped sliding strips 42 can drive the plurality of arc-shaped rubber strips 43 surrounding the circle to close to the outer ring surface of the collecting cylinder 7 and tightly adhere to the outer ring surface of the collecting cylinder 7, thereby the collecting cylinder 7 can be clamped in the storage tube 31, so that the powder material prepared in the vacuum chamber 21 can accurately fall into the collecting cylinder 7 for collection and storage; when the collecting cylinder 7 needs to be taken out from the storage tube 31 after collecting a certain amount of powder material, at this time the processing personnel stop the work of the arc discharge device 2, so that the vacuum chamber 21 reaches the rated air pressure, at this time the processing personnel control the upper end of the chuck assembly 6 to be inserted into the storage tube 31 through the storage groove hole 511 to adsorb and fix the bottom of the collecting cylinder 7, at this time the clamping and sealing assembly 4 is separated from the clamping of the collecting cylinder 7, then the chuck assembly 6 is lowered to drive the collecting cylinder 7 to descend into the empty storage groove hole 511, so that the storage groove hole 511 can support the collecting cylinder 7 collecting the powder material, then the chuck assembly 6 is separated from the adsorption and fixation of the collecting cylinder 7, then the driving motor fixed and supported by the support cross strip 55 and the support column 54 is controlled to work, so that the output shaft drives the rotating disc 51 to rotate in the rotating groove hole through the rotating shaft 53, and the rotating ring 52 can be rotationally supported by the rotating disc 51, so that the empty collecting cylinder 7 placed in the other storage groove hole 511 is rotated to the position directly below the storage tube 31, and the collecting cylinder 7 collecting the powder material is rotated to separate from the storage tube 31, then the processing personnel can take the collecting cylinder 7 collecting the powder material from the storage groove hole 511, thereby facilitating the transfer and storage of the collected powder material.

[0044] The preferred embodiments disclosed above are only used to help explain the present application. The preferred embodiments do not describe all the details and do not limit the application to the specific embodiments described. Obviously, many modifications and changes can be made according to the content of the present application. The present application is selected and described in detail to better explain the principles and practical applications of the present application, so that those skilled in the art can well understand and utilize the present application. The present application is limited by the claims and their entire scope and equivalents.

Claims

1. A material conveying device for carbon nanotube production, comprising a worktable (1), characterized in that, The workbench (1) is fixed and supported by a support frame above an electric arc discharge device (2), a vacuum chamber (21) of the electric arc discharge device (2) is in sealing communication with a material guide hopper (3) below, the lower end surface of the material guide hopper (3) is provided with a storage tube (31), the storage tube (31) is detachably clamped with a material collecting cylinder (7) by a clamping and sealing assembly (4), a transfer conveying assembly (5) is arranged on the workbench (1), and the transfer conveying assembly (5) is used to transfer and convey the material collecting cylinder (7) collecting material from the storage tube (31) to replace it; the clamping and sealing assembly (4) comprises an arc-shaped elastic strip (41), an arc-shaped sliding strip (42), an arc-shaped rubber strip (43), an air guide hose (44) and an air pipe (45), an annular groove (32) is annularly arranged on the inner wall of the storage tube (31), and a plurality of arc-shaped elastic strips (41) with cavity structures are arranged in the annular groove (32) in circumferential array, the plurality of arc-shaped elastic strips (41) are made of elastic film material, the outer arc surface of the arc-shaped elastic strip (41) is connected with the inner groove wall of the annular groove (32), and the upper and lower surfaces of the arc-shaped elastic strip (41) are slidably attached to the upper and lower groove walls of the annular groove (32), the inner arc surface of each arc-shaped elastic strip (41) is connected with an arc-shaped sliding strip (42), the upper and lower surfaces of the arc-shaped sliding strip (42) are slidably attached to the upper and lower surfaces of the annular groove (32), and the inner side surface of each arc-shaped sliding strip (42) is provided with an arc-shaped rubber strip (43), a plurality of arc-shaped rubber strips (43) are arranged to surround the outer circumferential surface of the material collecting cylinder (7) in the storage tube (31) and are slidably clamped and attached, a plurality of arc-shaped elastic strips (41) with cavity structures are in communication with each other through the air guide hose (44), the air pipe (45) is fixed on the storage tube (31), one end of the air pipe (45) is communicated with the arc-shaped elastic strip (41) through the annular groove (32), and the other end of the air pipe (45) is communicated with the air pump fixed on the workbench (1); the clamping and sealing assembly (4) further comprises a blocking block (46) and an elastic sealing film (47), the arc-shaped two end surfaces of each arc-shaped elastic strip (41) are slidably attached with the blocking block (46), the blocking block (46) is fixedly arranged in the annular groove (32), and the upper end surfaces of the adjacent two arc-shaped sliding strips (42) and arc-shaped rubber strips (43) are connected by the elastic sealing film (47).

2. The material conveying apparatus for carbon nanotube production according to claim 1, wherein The transfer conveying assembly (5) comprises a rotating disc (51), a rotating ring (52), a rotating shaft (53), a support column (54), a support crosspiece (55) and a suction disc assembly (6), a rotating groove is formed in the tabletop of the workbench (1), the rotating disc (51) is rotatably arranged in the rotating groove through the rotating ring (52), a plurality of storage grooves (511) are circumferentially formed in the rotating disc (51), and a receiving cylinder (7) is slidably inserted into the storage groove (511), the rotating shaft (53) is fixed at the center position of the rotating disc (51), and the bottom end surface of the rotating shaft (53) is connected with the output shaft of the driving motor, the driving motor is supported by the vertical support column (54), and the support column (54) is fixed and supported by the support crosspiece (55) which is horizontally fixed below the workbench (1), and the lower end of the storage tube (31) is aligned with the storage groove (511) on the rotating rotating disc (51).

3. The material conveying apparatus for carbon nanotube production according to claim 2, wherein The suction disc assembly (6) comprises a vacuum suction disc (61), a suction pipe (62) and an electric push rod (63), the lower end surface of the vacuum suction disc (61) is communicated with the suction pipe (62), the suction pipe (62) is communicated with the vacuum pump fixed on the workbench (1) through the suction pipe, the fixed section of the electric push rod (63) is fixed on the support crosspiece (55), and the piston rod of the electric push rod (63) is sealingly connected with the suction pipe (62), and the vacuum suction disc (61) is located directly below the lower end of the storage tube (31).

4. The material conveying apparatus for carbon nanotube production according to claim 3, wherein The receiving cylinder (7) comprises a cylinder body (71), an annular folded edge (72) and an elastic rubber ring (73), the annular folded edge (72) is arranged at the upper cylinder port of the cylinder body (71), the elastic rubber ring (73) is arranged at the outer edge of the annular folded edge (72), the elastic rubber ring (73) is elastically extruded onto the inner wall of the storage tube (31), and the diameter of the annular folded edge (72) is greater than the diameter of the storage groove (511).

5. The material conveying apparatus for carbon nanotube production according to claim 4, wherein The receiving cylinder (7) is sealingly provided with a collection cup (8), a plurality of clamping grooves (74) are circumferentially formed in the annular folded edge (72), a plurality of elastic clamping strips (81) are circumferentially arranged on the bending edge of the collection cup (8), and the plurality of elastic clamping strips (81) are extruded and clamped into the plurality of clamping grooves (74).

6. The material conveying apparatus for carbon nanotube production according to claim 5, wherein A plurality of support blocks (9) are circumferentially arranged on the upper end surface of the storage groove (511), and the plurality of support blocks (9) are in contact with the annular folded edge (72) of the receiving cylinder (7).

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