A purification device and method for carbon nanotube powder

Abstract

This invention discloses a purification device and method for carbon nanotube powder, comprising a cylinder with legs installed on its lower surface and a purification component on its surface, the purification component including a filter screen placed inside the cylinder; a servo motor drives a drive wheel, a rotating ring, and a positioning ring to reciprocate; the intermittent engagement of a top block and a protrusion causes the filter screen to reciprocate and vibrate under the action of a lifting elastic element, intermittently shaking and loosening the carbon nanotube powder on the filter screen, thus preventing powder agglomeration and clogging of the filter screen pores, ensuring that the acid solution can quickly and thoroughly pass through the filter screen to complete solid-liquid separation, significantly improving filtration efficiency and separation effect; at the same time, the vibration can reduce the adsorption residue of carbon nanotube powder on the filter screen surface, reduce material loss, and ensure the adequacy of subsequent water washing purification.

Description

Technical Field

[0001] This invention relates to the field of carbon nanotube powder purification technology, specifically to a purification device and method for carbon nanotube powder. Background Technology

[0002] Carbon nanotube powder is a one-dimensional nanoscale tubular carbon material powder composed of carbon elements. It is black and fluffy, and is formed by the curling of graphene sheets into a hollow tubular structure. It has ultra-high strength, excellent electrical conductivity, thermal conductivity and chemical stability. It is often used as a conductive agent, reinforcing phase and functional filler. Due to its excellent performance, it is widely used in lithium battery conductive additives, composite material reinforcement, conductive coatings, electronic devices and thermal conductive materials.

[0003] Existing technologies often employ purification devices to purify mixtures of carbon nanotube powder and acid, but these methods have the following drawbacks and limitations: 1) Powder tends to accumulate locally on the filter screen, resulting in uneven stress on the filter screen and low utilization of the filtration area. In some areas, powder agglomerates and clogs the filter screen, while in other areas, filtration is too fast, which will cause incomplete solid-liquid separation. 2) It is difficult to remove residual acid and soluble impurities adhering to the surface of powder by relying solely on vibration filtration; 3) When the purification is complete and the material is discharged, the powder tends to adhere to the top of the filter screen, so it is often necessary to disassemble the main body of the device or the filter screen, which is a cumbersome operation.

[0004] Therefore, there is an urgent need to provide a new solution to address the defects and shortcomings of the existing technologies. Summary of the Invention

[0005] To address the deficiencies and shortcomings of the existing technologies, this invention provides a purification device and method for carbon nanotube powder.

[0006] To achieve the above objectives, the present invention provides the following technical solution: A purification device for carbon nanotube powder includes a cylinder, a cleaning component is provided at the top of the cylinder, a support leg is provided at the bottom of the cylinder, and a purification component and a feeding component are provided in the middle of the cylinder. Its features are: The purification assembly includes a filter screen movably disposed inside the cylinder. Several sliding cylinders and protrusions are uniformly fixed at the bottom of the filter screen along the circumferential direction, and the protrusions are disposed on the radially outer side of the sliding cylinders. Several support blocks are uniformly fixed on the inner wall of the cylinder along the circumferential direction. A limiting rod is fixed at the top of the support block. The limiting rod extends into the interior of the sliding cylinder and is slidably connected to the sliding cylinder. A lifting elastic element is disposed between the top of the limiting rod and the inner wall of the sliding cylinder. The two ends of the lifting elastic element are respectively fixedly connected to the inner wall of the sliding cylinder and the top of the limiting rod. The inner wall of the cylinder is provided with a rotating groove, and a positioning ring is rotatably connected inside the rotating groove. Several top blocks are evenly fixed on the top of the positioning ring along the circumferential direction. The number of protrusions and top blocks are equal and their positions correspond. The protrusions and top blocks are arranged opposite each other and are set as mutually adaptable semicircles. When the positioning ring rotates, it can drive the protrusions and filter screen to move up and down periodically through the top block.

[0007] As a further preferred embodiment of the present invention, a funnel-shaped receiving hopper is fixed to the top of the cylinder, and a plurality of guide plates are uniformly fixed along the circumferential direction on the inner wall of the receiving hopper.

[0008] As a further preferred embodiment of the present invention, a plurality of limiting holes are uniformly opened in the interior of the rotating groove along the circumferential direction, a plurality of connecting blocks are uniformly fixed on the outer edge of the positioning ring, the connecting blocks are located inside the limiting holes and slide in cooperation with them, a rotating ring is rotatably connected to the outer side of the cylinder, and the connecting blocks are fixedly connected to the rotating ring.

[0009] As a further preferred embodiment of the present invention, an installation ring is fixed on the outer side of the cylinder, and a rotating elastic element is sleeved on the outer side of the cylinder, with both ends of the rotating elastic element being fixedly connected to the bottom of the rotating ring and the top of the installation ring, respectively.

[0010] As a further preferred embodiment of the present invention, a plurality of positioning seats are uniformly fixed on the outer edge of the mounting ring, and a servo motor is installed inside each positioning seat. A drive wheel is fixed at the output end of the servo motor, and the drive wheel is connected to the rotating ring for transmission.

[0011] In a further preferred embodiment of the present invention, the drive wheel is a gear, the rotating ring is a toothed ring with teeth on its outer edge, and the drive wheel and the rotating ring mesh accordingly.

[0012] As a further preferred embodiment of the present invention, the cleaning assembly includes a support rod fixed to the top of the rotating ring. The support rods are evenly arranged in the circumferential direction at the top of the rotating ring. A mounting cover is fixed to the top of the support rod. The mounting cover is rotatably disposed on the outside of the receiving hopper. A nozzle is installed inside the mounting cover. The input end of the nozzle is connected to one end of a conduit. A connector is fixed to the other end of the conduit.

[0013] As a further preferred embodiment of the present invention, the feeding assembly includes feeding holes evenly opened on the outer side of the cylinder along the circumferential direction, a sealing plate inserted inside the feeding hole, a clamping plate fixedly connected inside the feeding hole, and a clamping groove opened on the inner side of the sealing plate, the clamping groove engaging with the clamping plate.

[0014] As a further preferred embodiment of the present invention, the card plate has an assembly groove inside, the sealing plate has a positioning hole inside, the assembly groove and the positioning hole are positioned correspondingly, and a fixing member is threadedly inserted inside the assembly groove and the positioning hole, and a gripping part is fixed on the outside of the sealing plate.

[0015] Furthermore, the present invention also provides a purification method for a carbon nanotube powder purification device, characterized by comprising the following steps: S100: Feeding and guiding: The mixture of carbon nanotube powder and acid is introduced into the cylinder through the receiving hopper, and the material is guided by the guide plate to fall evenly onto the top of the filter screen. S200: Vibration filtration: The servo motor is started to drive the filter screen to periodically reciprocate up and down and vibrate, shaking the powder so that the acid liquid passes through the filter screen to settle and complete the solid-liquid separation. S300: Vibration water washing: During the periodic reciprocating vibration of the filter screen, clean water is sprayed through the nozzle to wash the powder and remove residual acid and soluble impurities; S400: Feeding and Retrieving: Turn off the equipment, remove the sealing plate, and take out the carbon nanotube powder purified by the filter through the feeding hole. In summary, the technical effects and advantages of this invention are as follows: 1) This invention provides a purification device and method for carbon nanotube powder. A servo motor outputs power to drive a drive wheel, which in turn drives a rotating ring and a positioning ring to rotate reciprocally. The intermittent cooperation between the top block and the protrusion achieves periodic reciprocating lifting and lowering vibration. Under the action of the lifting elastic element, vibration reduction and elastic reset are achieved, causing the carbon nanotube powder on the filter screen to shake and loosen intermittently. This fundamentally prevents the powder from agglomerating and clogging the filter screen pores, ensuring that the acid can quickly and thoroughly pass through the filter screen to complete solid-liquid separation, greatly improving filtration efficiency and separation effect. At the same time, the vibration effect can reduce the adsorption residue of carbon nanotube powder on the filter screen surface, reduce material loss, and ensure the adequacy of subsequent water washing purification.

[0016] 2) This invention provides a purification device and method for carbon nanotube powder. After acid filtration, the filter screen can be continuously vibrated while water is sprayed onto the powder through a nozzle for online washing. The vibration fully loosens the carbon nanotube powder, allowing water to penetrate evenly into the powder, effectively removing residual acid and soluble impurities adsorbed on the powder surface, and preventing acid residue from causing powder deterioration and performance damage. Compared with traditional static water washing, vibration washing has no dead corners and is more thorough, further improving the purification purity of carbon nanotube powder and ensuring the stability of its subsequent electrochemical and conductive core properties.

[0017] 3) This invention provides a purification device and method for carbon nanotube powder. The feeding component adopts a locking fit between the sealing plate and the feeding hole. The fixing part enables quick positioning and unlocking. The operator only needs to unscrew the fixing part and hold the handle to pull out the sealing plate. The purified carbon nanotube powder can be directly taken out through the feeding hole without disassembling the main body of the device or the filter screen. The operation is simple and quick. At the same time, the precise fit between the sealing plate and the locking plate can ensure the sealing of the cylinder during filtration and water washing, avoiding leakage of acid and water, which improves the working environment and reduces the labor intensity of manual material handling. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of a purification device for carbon nanotube powder according to the present invention; Figure 2 This is a bottom view schematic diagram of a carbon nanotube powder purification device according to the present invention; Figure 3 This is a partial structural diagram of a carbon nanotube powder purification device according to the present invention; Figure 4 This is a partial cross-sectional view of a carbon nanotube powder purification device according to the present invention. Figure 5 In a purification device for carbon nanotube powder according to the present invention Figure 4 A schematic diagram of the structure at point A; Figure 6 This is a schematic diagram of the split structure at the filter screen in a carbon nanotube powder purification device of the present invention; Figure 7 This is a partial structural schematic diagram of a purification device for carbon nanotube powder according to the present invention. Figure 8 In a purification device for carbon nanotube powder according to the present invention Figure 7 A schematic diagram of the structure at point B; In the diagram: 1. Cylinder; 2. Support leg; 3. Purification component; 31. Mounting ring; 32. Positioning seat; 33. Servo motor; 34. Drive wheel; 35. Rotating elastic element; 36. Rotating ring; 37. Connecting block; 38. Positioning ring; 39. Top block; 310. Filter screen; 311. Slide cylinder; 312. Lifting elastic element; 313. Limiting rod; 314. Support block; 315. Protrusion; 316. Rotating groove; 317. Limiting hole; 318. Receiving hopper; 319. Guide plate; 4. Cleaning component; 41. Support rod; 42. Mounting cover; 43. Guide tube; 44. Connector; 45. Nozzle; 5. Discharge component; 51. Clamping plate; 52. Assembly groove; 53. Discharge hole; 54. Sealing plate; 55. Slot; 56. Positioning hole; 57. Holding part; 58. Fixing component. Detailed Implementation

[0019] 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.

[0020] [First Embodiment] refer to Figures 1-8 As shown, the first embodiment of the present invention provides a purification device for carbon nanotube powder, including a cylinder 1, a cleaning component 4 at the top of the cylinder 1, a support leg 2 at the bottom of the cylinder 1, a purification component 3 and a feeding component 5 in the middle of the cylinder 1; the cleaning component 4 can spray water onto the powder for online washing, and the vibration state makes the carbon nanotube powder fully loosened, and the water can penetrate evenly into the interior of the powder, effectively removing residual acid and soluble impurities adsorbed on the powder surface; the purification component 3 drives the carbon nanotube powder on the filter screen to shake and loosen intermittently, avoiding the powder agglomeration and clogging of the filter screen pores from the source, ensuring that the acid can quickly and thoroughly pass through the filter screen to complete solid-liquid separation, greatly improving filtration efficiency and separation effect.

[0021] The key improvement of this embodiment compared to the prior art is that: Purification component 3 includes a filter screen 310 movably disposed inside the cylinder 1. Acid solution passes through the filter screen 310 and settles, completing solid-liquid separation. Several sliding cylinders 311 and protrusions 315 are uniformly fixed along the circumferential direction at the bottom of the filter screen 310. The protrusions 315 are located radially outward of the sliding cylinders 311 to avoid interference that may occur during rotation. Several support blocks 314 are uniformly fixed along the circumferential direction on the inner wall of the cylinder 1. Limiting rods 313 are fixed to the top of each support block 314. 313 extends into the interior of the slide cylinder 311 and slides to connect with the slide cylinder 311 to achieve positioning of the filter screen 310 during periodic reciprocating lifting and lowering vibration, thus preventing deviation; a lifting elastic element 312 is provided between the top of the limiting rod 313 and the inner wall of the slide cylinder 311. The two ends of the lifting elastic element 312 are fixedly connected to the inner wall of the slide cylinder 311 and the top of the limiting rod 313, respectively. Periodic reciprocating lifting and lowering vibration is achieved by the intermittent cooperation of the top block and the protrusion, and vibration reduction and elastic reset are achieved under the action of the lifting elastic element. The inner wall of the cylinder 1 is provided with a rotating groove 316, and a positioning ring 38 is rotatably connected inside the rotating groove 316. The rotating groove 316 provides a space for the positioning ring 38. Several top blocks 39 are evenly fixed on the top of the positioning ring 38 along the circumferential direction. The number of protrusions 315 and top blocks 39 are equal and their positions correspond. The protrusions 315 and top blocks 39 are arranged opposite each other and are set as mutually compatible semicircles. When the positioning ring 38 rotates, it can drive the protrusions 315 and the filter screen 310 to move up and down periodically through the top block 39.

[0022] When the positioning ring 38 rotates, it intermittently lifts the protrusion 315 and the filter screen 310 through the top block 39. The intermittent cooperation between the top block 39 and the protrusion 315 realizes the reciprocating up and down vibration of the filter screen 310. Under the action of the lifting elastic element 312, vibration is reduced and elastically reset, causing the carbon nanotube powder on the filter screen 310 to be intermittently shaken and loosened. This prevents the powder from agglomerating and clogging the filter screen pores, ensuring that the acid can quickly and thoroughly pass through the filter screen 310 to complete solid-liquid separation, greatly improving filtration efficiency and separation effect. At the same time, the vibration can reduce the adsorption residue of carbon nanotube powder on the surface of the filter screen 310, reduce material loss, and ensure the adequacy of subsequent water washing and purification.

[0023] like Figure 4 As shown, in this embodiment, a funnel-shaped receiving hopper 318 is fixed at the top of the cylinder 1. Several guide plates 319 are uniformly fixed along the circumferential direction on the inner wall of the receiving hopper 318. By adopting the funnel-shaped receiving hopper 318 and cooperating with several guide plates 319 uniformly fixed along the circumferential direction on the inner wall, the mixture of carbon nanotube powder and acid solution can be uniformly guided, so that the material falls steadily and evenly on the top of the filter screen 310, avoiding the problem of uneven filtration or partial blockage of the filter screen 310 caused by local accumulation of material. This ensures that the filtration area of ​​the entire filter screen 310 is fully utilized, improves the consistency of solid-liquid separation, and ensures the uniform quality of the purified powder.

[0024] like Figure 5 As shown, in order to achieve the limiting effect during the rotation process, a number of limiting holes 317 are evenly opened in the circumferential direction inside the rotating groove 316, and a number of connecting blocks 37 are evenly fixed on the outer edge of the positioning ring 38. The connecting blocks 37 are located inside the limiting holes 317 and slide with them. A rotating ring 36 is rotatably connected to the outside of the cylinder 1, and the connecting blocks 37 are fixedly connected to the rotating ring 36.

[0025] like Figure 2 As shown, in order to assist in achieving the elastic reset effect after the rotating ring 36 rotates, an installation ring 31 is fixed on the outside of the cylinder 1, and a rotating elastic element 35 is sleeved on the outside of the cylinder 1. The two ends of the rotating elastic element 35 are fixedly connected to the bottom of the rotating ring 36 and the top of the installation ring 31, respectively. The rotating elastic element 35 can be a torsion spring or other commonly used in the mechanical field, so as to assist in achieving the elastic reset effect after the rotating ring 36 rotates through the elastic restoring force provided by the rotating elastic element 35.

[0026] like Figure 2-3 and Figure 7-8As shown, several positioning seats 32 are evenly fixed on the outer edge of the mounting ring 31. Each positioning seat 32 is equipped with a servo motor 33. The output end of the servo motor 33 is fixed with a drive wheel 34. The drive wheel 34 is connected to the rotating ring 36 for transmission.

[0027] Preferably, in this embodiment, a gear meshing transmission method is selected. The drive wheel 34 is a gear, and the rotating ring 36 is a toothed ring with teeth on the outer edge. The drive wheel 34 and the rotating ring 36 mesh with each other. The output power of the servo motor 33 is used to drive the rotating ring 36 to rotate using the gear transmission method.

[0028] The servo motor 33 outputs power to drive the drive wheel 34 to rotate synchronously. The drive wheel 34 drives the rotating ring 36 and the positioning ring 38 fixed to it to rotate synchronously through gear meshing. When the positioning ring 38 rotates, it intermittently lifts the protrusion 315 and the filter screen 310 through the top block 39. The intermittent cooperation between the top block 39 and the protrusion 315 realizes the reciprocating lifting and lowering vibration of the filter screen 310. Under the action of the lifting elastic element 312, the vibration is reduced and the elastic reset is achieved, which causes the carbon nanotube powder on the filter screen 310 to be intermittently shaken and loosened. This avoids the powder from agglomerating and clogging the filter screen pores from the root, ensuring that the acid can quickly and thoroughly pass through the filter screen 310 to complete solid-liquid separation, greatly improving the filtration efficiency and separation effect. At the same time, the vibration can reduce the adsorption residue of carbon nanotube powder on the surface of the filter screen 310, reduce material loss, and ensure the adequacy of subsequent water washing and purification.

[0029] like Figure 2-3 and Figure 7-8 As shown, the cleaning component 4 in this embodiment includes a support rod 41 fixed to the top of the rotating ring 36. The support rod 41 is evenly arranged along the circumferential direction on the top of the rotating ring 36. A mounting cover 42 is fixed to the top of the support rod 41. The mounting cover 42 is rotatably disposed on the outside of the receiving hopper 318. A nozzle 45 is installed inside the mounting cover 42. The input end of the nozzle 45 is connected to one end of the conduit 43. A connector 44 is fixed to the other end of the conduit 43. After the acid solution is filtered, the servo motor 33 is kept running to make the filter screen 310 vibrate continuously, thus cleaning the external... The water supply pipeline is connected to the connector 44. Clean water is sprayed out from the nozzle 45 inside the mounting cover 42 through the conduit 43 to uniformly rinse the carbon nanotube powder under vibration, effectively removing residual acid and soluble impurities adsorbed on the powder surface. The vibration state makes the water washing more thorough and without dead corners, further improving the purity of the carbon nanotube powder. Compared with traditional static water washing, vibration water washing has no dead corners and is more thorough, further improving the purification purity of the carbon nanotube powder and ensuring the stability of its subsequent electrochemical, conductive and other core properties.

[0030] like Figure 2-4As shown, the feeding assembly 5 in this embodiment includes feeding holes 53 evenly opened along the circumferential direction on the outer side of the cylinder 1. A sealing plate 54 is inserted inside the feeding hole 53. A retaining plate 51 is fixedly connected inside the feeding hole 53. A retaining groove 55 is opened on the inner side of the sealing plate 54, and the retaining groove 55 engages with the retaining plate 51. An assembly groove 52 is opened inside the retaining plate 51, and a positioning hole 56 is opened inside the sealing plate 54. The assembly groove 52 and the positioning hole 56 are positioned correspondingly, and a fixing member 58 is threadedly inserted inside the assembly groove 52 and the positioning hole 56. A gripping part 57 is fixed on the outside of the sealing plate 54. The precise cooperation between the sealing plate 54 and the clamping plate 51 ensures the sealing of the cylinder 1 during filtration and washing, preventing leakage of acid and water, improving the working environment and reducing the labor intensity of manual material handling. The fixing part 58 enables quick positioning and unlocking. Simply unscrew the fixing part 58 and hold the gripping part 57 to pull out the sealing plate 54. The purified carbon nanotube powder can be directly taken out through the discharge hole 53 without disassembling the main body of the device or the filter screen 310. The operation is simple and quick.

[0031] Based on this, as a further preferred option, in order to improve the sealing effect, sealing devices or structures can be set at the positions where the outer edge of the sealing plate 54 meets the outer wall of the cylinder 1. For example, sealing materials such as rubber can be selected to further improve the sealing effect during the purification process.

[0032] The specific working process of this invention includes: The carbon nanotube powder to be purified and the acid mixture enter the interior of the cylinder 1 through the receiving hopper 318 at the top of the cylinder 1. The guide plate 319 on the inner wall of the receiving hopper 318 guides the mixture evenly, so that the material falls steadily to the top of the filter screen 310. At this time, the mixture begins to filter naturally under the action of gravity. The acid passes through the filter screen 310 and settles downwards. The carbon nanotube powder is trapped on the surface of the filter screen 310, realizing the initial separation of solid and liquid. The servo motor 33 on the mounting base is started. The servo motor 33 outputs power to drive the drive wheel 34 to rotate back and forth. Through meshing transmission, the rotating ring 36, connecting block 37 and positioning ring 38, which are fixed to each other, rotate back and forth synchronously along the rotating groove 316 of the cylinder 1. The top block 39 on the positioning ring 38 rotates synchronously with it, intermittently contacting the bottom protrusion 315 of the filter screen 310 and lifting it up. This causes the filter screen 310 to vibrate upward and downward and compress the lifting elastic element 312 in the slide cylinder 311. When the top block 39 moves away from the protrusion 315, the lifting elastic element 312 provides elastic restoring force to drive the filter screen 310 to achieve vibration reduction and rapid return to reset. The filter screen 310 forms continuous vibration in the reciprocating motion of lifting and falling, which intermittently shakes and loosens the carbon nanotube powder above, preventing the powder from agglomerating and clogging the filter screen 310 pores. This ensures that the acid liquid passes through the filter screen 310 quickly and thoroughly and flows down, greatly improving the filtration efficiency and separation effect. After the acid filtration is completed, the servo motor 33 is kept running to make the filter screen 310 vibrate continuously. At this time, the external water supply pipeline is connected to the connector 44, and clean water is sprayed out from the nozzle 45 inside the mounting cover 42 through the conduit 43 to uniformly rinse the carbon nanotube powder under vibration, effectively removing residual acid and soluble impurities adsorbed on the surface of the powder. The vibration state makes the water washing more thorough and without dead corners, further improving the purity of the carbon nanotube powder. After purification and washing, turn off the servo motor 33 and the external water supply line. After the filter screen 310 stops vibrating, unscrew the fixing part 58 on the corresponding sealing plate 54, hold the grip part 57 and pull the sealing plate 54 out of the discharge hole 53 of the cylinder 1, so that the card plate 51 and the card slot 55 are disengaged. The purified carbon nanotube powder on the filter screen 310 can then be taken out through the discharge hole 53, thus completing the entire purification process.

[0033] All electrical components mentioned in this article are connected to an external main controller and 220V AC mains power, and the main controller can be a conventional known device such as a computer for control.

[0034] The solution provided in this embodiment completes the entire process of material feeding, solid-liquid separation, vibration washing, and material unloading and unloading within the same cylinder 1, eliminating the need for additional transfer equipment. This simplifies the purification process of carbon nanotube powder, reduces losses and contamination during material transfer, avoids the cumbersome operation of multiple devices, and significantly improves the overall purification efficiency.

[0035] [Second Embodiment] The second embodiment of the present invention also provides a purification method for a carbon nanotube powder purification device, comprising the following steps: S100: Feeding and guiding: The mixture of carbon nanotube powder and acid is introduced into the cylinder 1 through the receiving hopper 318, and the material is guided by the guide plate 319 to fall evenly onto the top of the filter screen 310. S200: Vibration filtration: Start the servo motor 33 to drive the filter screen 310 to periodically reciprocate up and down vibration, shake the powder so that the acid liquid passes through the filter screen 310 to settle and complete the solid-liquid separation; S300: Vibration water washing: During the periodic reciprocating vibration of the filter screen 310, clean water is sprayed through the nozzle 45 to wash the powder and remove residual acid and soluble impurities. S400: Feeding and Retrieving: Turn off the equipment, remove the sealing plate 54, and take out the carbon nanotube powder purified by the filter screen 310 through the feeding hole 53.

[0036] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A purification device for carbon nanotube powder, comprising a cylinder (1), a cleaning component (4) provided at the top of the cylinder (1), a support foot (2) provided at the bottom of the cylinder (1), and a purification component (3) and a feeding component (5) provided in the middle of the cylinder (1). Its features are: The purification component (3) includes a filter screen (310) movably disposed inside the cylinder (1). The bottom of the filter screen (310) is uniformly fixed with a plurality of slide cylinders (311) and protrusions (315) along the circumferential direction. The protrusions (315) are disposed on the radial outer side of the slide cylinders (311). The inner wall of the cylinder (1) is uniformly fixed with a plurality of support blocks (314) along the circumferential direction. The top of the support block (314) is fixed with a limiting rod (313). The limiting rod (313) extends into the slide cylinder (311) and is slidably connected to the slide cylinder (311). A lifting elastic element (312) is disposed between the top of the limiting rod (313) and the inner wall of the slide cylinder (311). The two ends of the lifting elastic element (312) are respectively fixedly connected to the inner wall of the slide cylinder (311) and the top of the limiting rod (313). The inner wall of the cylinder (1) is provided with a rotating groove (316), and a positioning ring (38) is rotatably connected inside the rotating groove (316). Several top blocks (39) are evenly fixed on the top of the positioning ring (38) along the circumferential direction. The number of protrusions (315) and top blocks (39) are equal and their positions correspond. The protrusions (315) and top blocks (39) are arranged opposite each other and are set as mutually compatible semicircles. When the positioning ring (38) rotates, it can drive the protrusions (315) and filter screen (310) to move up and down periodically through the top blocks (39).

2. The purification device for carbon nanotube powder according to claim 1, characterized in that: The top of the cylinder (1) is fixed with a funnel-shaped receiving hopper (318), and a number of guide plates (319) are evenly fixed on the inner wall of the receiving hopper (318) along the circumferential direction.

3. The purification device for carbon nanotube powder according to claim 2, characterized in that: The rotating groove (316) has a plurality of limiting holes (317) evenly opened in the circumferential direction. The outer edge of the positioning ring (38) is evenly fixed with a plurality of connecting blocks (37). The connecting blocks (37) are located inside the limiting holes (317) and slide in cooperation with them. The outer side of the cylinder (1) is rotatably connected to a rotating ring (36). The connecting blocks (37) are fixedly connected to the rotating ring (36).

4. The purification device for carbon nanotube powder according to claim 3, characterized in that: An installation ring (31) is fixed on the outside of the cylinder (1), and a rotating elastic element (35) is sleeved on the outside of the cylinder (1). The two ends of the rotating elastic element (35) are fixedly connected to the bottom of the rotating ring (36) and the top of the installation ring (31), respectively.

5. The purification device for carbon nanotube powder according to claim 4, characterized in that: The outer edge of the mounting ring (31) is uniformly fixed with a number of positioning seats (32), and each positioning seat (32) is equipped with a servo motor (33). The output end of the servo motor (33) is fixed with a drive wheel (34), and the drive wheel (34) is connected to the rotating ring (36) for transmission.

6. The purification device for carbon nanotube powder according to claim 5, characterized in that: The drive wheel (34) is a gear, and the rotating ring (36) is a toothed ring with teeth on the outer edge. The drive wheel (34) and the rotating ring (36) mesh with each other.

7. The purification device for carbon nanotube powder according to claim 6, characterized in that: The cleaning assembly (4) includes a support rod (41) fixed to the top of the rotating ring (36). The support rod (41) is evenly arranged along the circumferential direction on the top of the rotating ring (36). A mounting cover (42) is fixed to the top of the support rod (41). The mounting cover (42) is rotatably arranged on the outside of the receiving hopper (318). A nozzle (45) is installed inside the mounting cover (42). The input end of the nozzle (45) is connected to one end of the conduit (43). A connector (44) is fixed to the other end of the conduit (43).

8. The purification device for carbon nanotube powder according to claim 1, characterized in that: The feeding assembly (5) includes feeding holes (53) evenly opened on the outside of the cylinder (1) along the circumferential direction. A sealing plate (54) is inserted inside the feeding hole (53). A clamping plate (51) is fixedly connected inside the feeding hole (53). A clamping groove (55) is opened on the inner side of the sealing plate (54). The clamping groove (55) is engaged with the clamping plate (51).

9. The purification device for carbon nanotube powder according to claim 8, characterized in that: The card plate (51) has an assembly groove (52) inside, and the sealing plate (54) has a positioning hole (56) inside. The assembly groove (52) and the positioning hole (56) are positioned correspondingly, and a fixing part (58) is threaded into the assembly groove (52) and the positioning hole (56). A gripping part (57) is fixed on the outside of the sealing plate (54).

10. A purification method for a carbon nanotube powder purification apparatus according to any one of claims 1-9, characterized in that, Includes the following steps: S100: Feeding and guiding: The mixture of carbon nanotube powder and acid solution is introduced into the cylinder (1) through the receiving hopper (318), and the material is guided by the guide plate (319) to fall evenly onto the top of the filter screen (310); S200: Vibration filtration: Start the servo motor (33) to drive the filter screen (310) to periodically reciprocate up and down vibration, shake the powder so that the acid liquid passes through the filter screen (310) to achieve sedimentation and complete solid-liquid separation; S300: Vibration water washing: During the periodic reciprocating vibration of the filter screen (310), clean water is sprayed through the nozzle (45) to wash the powder and remove residual acid and soluble impurities; S400: Feeding and Retrieving: Turn off the equipment, remove the sealing plate (54), and take out the carbon nanotube powder purified by the filter screen (310) through the feeding hole (53).

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