A diamond micropowder impurity removal and purification device and method

Abstract

The present invention discloses a device and method for removing impurities and purifying diamond micropowder, which relates to the technical field of diamond processing equipment. The device includes a support box and a washing cylinder arranged at the upper left end thereof. The lower end of the washing cylinder is communicated with the inside of the support box. A driving shaft is arranged at the middle position of the upper end of the washing cylinder. The upper end of the driving shaft is connected to a power mechanism for driving its rotation and vertical movement. A feeding pipe for feeding materials into the washing cylinder is arranged outside the washing cylinder, and a feeding hopper is arranged at the end of the feeding pipe. A piston ring is slidably arranged on the inner wall of the washing cylinder. An upper connecting ring is rotatably arranged outside the driving shaft. By designing the traditional rigid filter screen into a mesh structure and making the tip of the conical filter screen move up and down continuously, the sliding direction of the micropowder is switched, avoiding the problem that traditional micropowder is difficult to roll over due to accumulation on one side, and the micropowder can be dispersed, ensuring the purification effect of the micropowder.

Description

Technical Field

[0001] The present invention relates to the technical field of diamond processing equipment, and specifically to a diamond micropowder impurity removal and purification device and method. Background Technique

[0002] Diamond micropowder refers to diamond particles with a particle size finer than 36 / 54 microns, including single-crystal diamond micropowder and polycrystalline diamond micropowder. Since the output of single-crystal diamond micropowder is large and its application fields are wide, in the industry, diamond micropowder generally specifically refers to single-crystal diamond micropowder. Single-crystal diamond micropowder is produced by static pressure synthetic diamond single crystal abrasive grains through crushing and shaping processes using special process methods for superhard materials. In order to purify diamonds, purification devices are generally used. During the process of purifying diamond micropowder, the diamond micropowder located on the outside is prone to accumulation, and impurities in this part of the diamond micropowder cannot be effectively removed, resulting in a low impurity removal efficiency. The patent with the publication number CN216026633U discloses a diamond micropowder impurity removal and purification device. This device extracts diamonds by setting a conical filter screen, and drives the filter screen to reciprocate up and down during the purification process, so that the diamond micropowder is fully mixed with the impurity removal liquid. However, since the filter screen is always in a conical structure, the diamond powder will always accumulate at its lowest side. Even when the liquid surges from bottom to top, it is not easy to disperse the accumulated diamond powder, which is still disadvantageous for diamond impurity removal. Moreover, this washing method is not easy to drain the diamond powder, and the subsequent discharging is not convenient enough.

[0003] Based on this, a diamond micropowder impurity removal and purification device and method are now provided, which can eliminate the drawbacks of existing devices. Summary of the Invention

[0004] The purpose of the present invention is to provide a diamond micropowder impurity removal and purification device and method to solve the problems in the background technique.

[0005] To achieve the above purpose, the present invention provides the following technical solutions:

[0006] A diamond micropowder impurity removal and purification device includes a support box and a washing cylinder provided at its upper left end. The lower end of the washing cylinder is communicated with the inside of the support box. A driving shaft is provided at the middle position of the upper end of the washing cylinder. The upper end of the driving shaft is connected to a power mechanism for driving its rotation and up and down movement. A feeding pipe for feeding materials into the washing cylinder is provided outside the washing cylinder, and a feeding hopper is provided at the end of the feeding pipe. A piston ring is slidably provided on the inner wall of the washing cylinder. An upper connecting ring is rotatably provided outside the driving shaft. A filter screen cloth for filtering the powder is provided between the upper connecting ring and the piston ring. The filter screen cloth is a flexible structure. A flushing mechanism for promoting the flushing of the powder by the washing liquid is also provided on the driving shaft. A liquid supply mechanism for providing the washing liquid is provided inside the support box.

[0007] On the basis of the above technical solutions, the present invention further provides the following alternative technical solutions:

[0008] In an alternative solution: a discharging mechanism is further provided outside the washing cylinder. The discharging mechanism includes a sealing ring disposed on the inner wall of the washing cylinder. The upper end of the sealing ring is connected to a lifting push rod for driving it to slide up and down. A plurality of discharging ports for discharging are distributed on the outer side of the washing cylinder. A circular collecting groove for collecting the fine powder discharged from the discharging ports is provided on the outer side of the washing cylinder. A discharging pipe for discharging is provided at the lower left side of the circular collecting groove.

[0009] In an alternative solution: the power mechanism includes a transmission sleeve disposed at the upper end of the drive shaft. A transmission sliding hole is opened at the upper end of the transmission sleeve. A transmission shaft is slidably disposed in the transmission sliding hole. A limiting groove is provided on the inner wall of the transmission sliding hole. A limiting protrusion is provided on the outer side of the transmission shaft and is matched with the limiting groove. The cooperation of the limiting groove and the limiting protrusion restricts the relative rotation of the transmission shaft and the transmission sliding hole. The upper end of the transmission shaft is connected to a second motor for driving it to rotate. The second motor is fixedly connected to the washing cylinder through a positioning bracket. A pressing wheel is provided on the outer side of the transmission sleeve. A pressing ring for supporting the pressing wheel is provided at the upper end of the washing cylinder. The second motor drives the transmission sleeve to rotate through the transmission shaft, and the pressing wheel on the outer side of the transmission sleeve will be intermittently affected by the different height supporting surfaces of the pressing ring.

[0010] In an alternative solution: the flushing mechanism includes a liquid guiding channel disposed inside the drive shaft. A pushing blade is provided at the lower end of the drive shaft. A rotating cylinder is provided at the position of the lower port of the pushing blade. A lower connecting ring is rotatably disposed on the outer side of the rotating cylinder. The lower connecting ring and the piston ring are fixedly connected through a plurality of elastic ropes. The function of the elastic ropes is to generate a downward pulling force on the piston ring to maintain the filter mesh in a taut state. A first spray pipe is provided on the outer side of the drive shaft where the top of the liquid guiding channel is located. The lower surface of the first spray pipe is distributed with spray holes for spraying liquid. A second spray pipe communicated with the liquid guiding channel is provided on the outer side of the drive shaft below the filter mesh. The surface of the second spray pipe facing the filter mesh is also provided with spray holes for spraying liquid. A retaining ring for restricting the excessive displacement of the piston ring is provided on the inner wall of the lower end of the washing cylinder. Therefore, when the retaining ring blocks the piston ring, it cannot continue to move downward. At this time, the elastic ropes will be stretched, and the state of the filter mesh will switch from a tapered shape with a smaller upper part and a larger lower part to a tapered shape with a larger upper part and a smaller lower part.

[0011] In an alternative solution: the first spray pipe and the second spray pipe are arranged in a staggered manner.

[0012] In an alternative solution: The liquid supply mechanism includes a rotating cavity arranged inside the support box. In the middle of the rotating cavity, a rotating column is rotatably provided. The rotating column is connected to a rotating drive member for driving its rotation. Outside the rotating column, a impurity removal pool and a cleaning pool are distributed. Both the impurity removal pool and the cleaning pool are fixedly connected to the rotating column through connecting rods. The impurity removal pool is filled with a chemical solution, and the cleaning pool is filled with a washing liquid.

[0013] In an alternative solution: A heating pool is further provided outside the rotating column, and an electric heating rod for heating air is provided in the heating pool.

[0014] In an alternative solution: The rotating drive member includes a second gear arranged at the upper end of the rotating column. At the upper end of the support box on one side of the second gear, a first motor is provided. The output end of the first motor is provided with a first gear that meshes with the second gear.

[0015] In an alternative solution: A scraping unit for scraping away the fine powder inside the annular collection groove is further provided outside the washing cylinder. The scraping unit includes a rotating outer ring rotatably arranged at the upper port of the annular collection groove. Inside the rotating outer ring, a scraping plate that cooperates with the inner wall of the annular collection groove is provided. A transmission toothed ring is provided outside the rotating outer ring. The transmission toothed ring meshes with a scraping gear. The scraping gear is arranged at the output end of the first motor. The scraping gear and the first gear are coaxially arranged. The first gear and the output end of the first motor are also rotationally connected through a ratchet. The transmission directions of the upper and lower ratchets are opposite. The scraping gear and the end of the drive shaft of the first motor are rotationally connected through a ratchet.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0017] 1. In the present invention, the traditional rigid filter screen is designed into a mesh structure. By continuously moving the tip of the conical filter screen up and down, the sliding direction of the fine powder is switched, avoiding the problem that traditional fine powder accumulates on one side and is difficult to roll over, and the fine powder can be scattered, ensuring the purification effect of the fine powder.

[0018] 2. The impurity removal pool and the cleaning pool can be switched according to needs to realize the purification and cleaning treatment of the fine powder. It can also be switched to a heating pool, and the liquid medium in the flushing mechanism is replaced with hot air, so as to realize the rapid drying of the fine powder and facilitate the subsequent discharging.

[0019] 3. When discharging, the first motor rotates in reverse, and with the transmission of the two ratchets, the rotation of the rotating outer ring and the second gear is realized. When rotating forward, the switching between the cleaning pool, the impurity removal pool and the heating pool can be realized. When rotating in reverse, the rotating outer ring drives the scraping plate to collect the fine powder in the annular collection groove, so that the powder material is discharged along the discharge pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic structural diagram of the present invention.

[0021] Figure 2 This is a schematic structural diagram of the interior of the present invention.

[0022] Figure 3 This is a schematic structural diagram of the impurity removal tank, cleaning tank and heating tank of the present invention.

[0023] Figure 4 This is a schematic structural diagram of the filter mesh cloth of the present invention.

[0024] Annotation of reference numerals in the drawings: support box 11, first motor 12, first gear 13, second gear 14, rotating outer ring 15, piston ring 16, filter mesh cloth 17, liquid guide channel 18, drive shaft 19, pressing ring 20, pressing wheel 21, transmission sleeve 22, transmission shaft 23, second motor 24, transmission sliding hole 25, positioning frame 26, washing cylinder 27, lifting push rod 28, first spray pipe 29, sealing ring 30, discharge port 31, annular collection groove 32, discharge pipe 33, rotating cavity 34, impurity removal tank 35, rotating cylinder 36, pushing blade 37, second spray pipe 38, rotating column 39, connecting rod 40, cleaning tank 41, elastic rope 42, heating tank 43. Detailed implementation manners

[0025] In order to make the objectives, technical solutions and advantages of the present invention clearer and more understandable, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0026] In one embodiment, as Figures 1 - 4 shown, a diamond micropowder impurity removal and purification device includes a support box 11 and a washing cylinder 27 arranged at the upper left end thereof. The lower end of the washing cylinder 27 communicates with the interior of the support box 11. A drive shaft 19 is provided at the middle position of the upper end of the washing cylinder 27. The upper end of the drive shaft 19 is connected to a power mechanism for driving its rotation and vertical movement. A feeding pipe for feeding materials into the washing cylinder 27 is provided outside the washing cylinder 27, and a feeding hopper is provided at the end of the feeding pipe. A piston ring 16 is slidably arranged on the inner wall of the washing cylinder 27. An upper connecting ring is rotatably arranged on the outside of the drive shaft 19. A filter mesh cloth 17 for filtering the powder is arranged between the upper connecting ring and the piston ring 16. The filter mesh cloth 17 is a flexible structure. A flushing mechanism for promoting the flushing of the powder by the washing liquid is further provided on the drive shaft 19. A liquid supply mechanism for providing the washing liquid is provided inside the support box 11;

[0027] An unloading mechanism is further provided outside the washing cylinder 27. The unloading mechanism includes a sealing ring 30 arranged on the inner wall of the washing cylinder 27. The upper end of the sealing ring 30 is connected to a lifting push rod 28 for driving it to slide up and down. A plurality of discharge ports 31 for unloading are distributed outside the washing cylinder 27. During washing, the sealing ring 30 blocks the discharge ports 31, and the whole washing cylinder 27 cannot unload. A ring-shaped collection groove 32 for collecting the fine powder discharged from the discharge ports 31 is provided outside the washing cylinder 27. A discharge pipe 33 for discharging is provided at the lower left side of the ring-shaped collection groove 32. In this way, the fine powder discharged along the discharge ports 31 will enter the ring-shaped collection groove 32 and then be discharged along the discharge pipe 33;

[0028] A sealing ring is provided outside the piston ring 16, and chamfers are provided at both the upper and lower ends of the sealing ring to facilitate the transition between the piston ring 16 and the sealing ring 30;

[0029] The power mechanism includes a transmission sleeve 22 arranged at the upper end of the drive shaft 19. A transmission sliding hole 25 is provided at the upper end of the transmission sleeve 22. A transmission shaft 23 slides in the transmission sliding hole 25. A limiting groove is provided on the inner wall of the transmission sliding hole 25. A limiting protrusion matching the limiting groove is provided outside the transmission shaft 23. The cooperation of the limiting groove and the limiting protrusion restricts the relative rotation between the transmission shaft 23 and the transmission sliding hole 25. The upper end of the transmission shaft 23 is connected to a second motor 24 for driving it to rotate. The second motor 24 is fixedly connected to the washing cylinder 27 through a positioning bracket 26. A pressing wheel 21 is provided outside the transmission sleeve 22. A pressing ring 20 for supporting the pressing wheel 21 is provided at the upper end of the washing cylinder 27. The second motor 24 drives the transmission sleeve 22 to rotate through the transmission shaft 23. The pressing wheel 21 outside the transmission sleeve 22 will be intermittently affected by the different height support surfaces of the pressing ring 20. Coupled with the gravity of the transmission sleeve 22 itself, the transmission sleeve 22 moves up and down reciprocally along the transmission shaft 23;

[0030] The flushing mechanism includes a liquid guide channel 18 arranged inside the drive shaft 19, a push blade 37 is provided at the lower end of the drive shaft 19, a rotating cylinder 36 is provided at the lower port position of the push blade 37, a lower connecting ring is provided on the outer side of the rotating cylinder 36, and the lower connecting ring is fixed to the piston ring 16 by a plurality of elastic ropes 42. The function of the elastic rope 42 is to generate a downward pulling force on the piston ring 16 to maintain the filter cloth 17 in a taut state. A first nozzle 29 is provided on the outer side of the drive shaft 19 where the top of the liquid guide channel 18 is located, and a spray hole for spraying liquid is distributed on the lower surface of the first nozzle 29. The outer side of the drive shaft 19 on the lower side of the filter cloth 17 is provided with a A second nozzle 38 is connected to the liquid guide channel 18. The second nozzle 38 is also provided with a spray hole for spraying liquid on the surface of the filter cloth 17. It should be noted that the first nozzle 29 and the second nozzle 38 are staggered. When the drive shaft 19 descends and extends into the impurity removal tank 35 or the cleaning tank 41, the liquid will enter the drive shaft 19 under the push of the rotating drum 36, and then be sprayed out from the first nozzle 29 and the second nozzle 38 respectively. The sprayed water column will impact the upper and lower surfaces of the filter cloth 17. When impacting the lower surface of the filter cloth 17, a backwash operation can be achieved, thereby avoiding the problem of fine powder accumulation clogging the filter holes. Impacting the upper surface of the filter cloth 17 can further disperse the fine powder and improve the washing effect.

[0031] It is worth mentioning that the inner wall of the lower end of the washing drum 27 is provided with a retaining ring for limiting excessive displacement of the piston ring 16. Therefore, when the retaining ring blocks the piston ring 16, it cannot continue to move downward. At this time, the elastic rope 42 will be stretched, and the state of the filter mesh 17 will switch from a cone with a small top and a large bottom to a cone with a large top and a small bottom. In this way, the fine powder on the upper end of the filter mesh 17 will gather toward the middle, thus avoiding the problem of fine powder always accumulating around the cone during traditional cleaning. In this reciprocating manner, the fine powder will gather from the surrounding areas to the middle at the upper end of the filter mesh 17, and then disperse from the middle to the surrounding areas, which greatly improves the disorder of the fine powder. Combined with the impact of the water column, the washing effect of the fine powder is maximized.

[0032] The liquid supply mechanism includes a rotating cavity 34 arranged inside the support box 11. A rotating column 39 is rotatably arranged at the middle position inside the rotating cavity 34. The rotating column 39 is connected to a rotating drive member for driving its rotation. A impurity removal pool 35 and a cleaning pool 41 are distributed on the outer side of the rotating column 39. The impurity removal pool 35 and the cleaning pool 41 are both fixedly connected to the rotating column 39 through a connecting rod 40. A chemical solution is contained in the impurity removal pool 35, and a washing liquid is contained in the cleaning pool 41. The impurity removal pool 35 is used for chemically treating the fine powder, such as acid solution, to remove the impurities that can be dissolved therein. The cleaning pool 41 is used for washing the fine powder to remove the residual chemical liquid therein. The rotating drive member drives the rotating column 39 to rotate, so as to realize the position switching of the impurity removal pool 35 and the cleaning pool 41;

[0033] A heating pool 43 is further arranged on the outer side of the rotating column 39. Electric heating rods for heating air are arranged in the heating pool 43, so that hot air can be provided for the flushing mechanism, and then the fine powder can be quickly dried, which is convenient for later material taking, because the fine powder has strong adhesiveness when it is wet and is not easy to be completely taken out.

[0034] The rotating drive member includes a second gear 14 arranged at the upper end of the rotating column 39. A first motor 12 is arranged at the upper end of the support box 11 on one side of the second gear 14. A first gear 13 meshing with the second gear 14 is arranged at the output end of the first motor 12. The first motor 12 drives the first gear 13 to rotate, and the first gear 13 drives the rotating column 39 to rotate through the second gear 14, so as to provide power for the switching of the impurity removal pool 35 and the cleaning pool 41, and enable the device to switch between pickling, cleaning and drying;

[0035] Outside the washing cylinder 27, there is also a scraping unit for scraping the fine powder inside the annular collecting tank 32. The scraping unit includes a rotating outer ring 15 rotatably arranged at the upper port of the annular collecting tank 32. Inside the rotating outer ring 15, there is a scraping plate matched with the inner wall of the annular collecting tank 32. On the outside of the rotating outer ring 15, there is a transmission gear ring, which meshes with a scraping gear. The scraping gear is arranged at the output end of the first motor 12, and the scraping gear is coaxially arranged with the first gear 13. The first gear 13 is also rotationally connected to the output end of the first motor 12 through a ratchet. The transmission directions of the upper and lower ratchets are opposite. The scraping gear is rotationally connected to the end of the driving shaft of the first motor 12 through a ratchet. Therefore, when switching between the cleaning tank 41 and the impurity removal tank 35, the rotating column 39 rotates forward. At this time, due to the existence of the ratchet, the rotating outer ring 15 will not rotate, and scraping cannot be achieved. When scraping is required, the first motor 12 rotates in the reverse direction. At this time, the first spray pipe 29 cannot rotate, while the rotating outer ring 15 will rotate driven by the discharging gear. The rotating outer ring 15 drives the scraping plate to rotate, so as to continuously scrape the fine powder collected in the annular collecting tank 32, and finally discharge it along the discharge pipe 33. Because the drying operation is set here, the problem that the fine powder is wet and adheres and is not easy to discharge can be eliminated;

[0036] The above embodiment discloses a diamond fine powder impurity removal and purification device. In actual use, first, the fine powder to be purified is added into the washing cylinder 27, and then the impurity removal tank 35 is transferred below the washing cylinder 27 through a rotating driving member. The driving shaft 23 drives the transmission sleeve 22 to rotate. The pressing wheel 21 on the outside of the transmission sleeve 22 will intermittently receive the acting force of the protrusion on the pressing ring 20. Coupled with the gravity of the transmission sleeve 22 itself, the transmission sleeve 22 moves up and down reciprocally along the driving shaft 23. The driving shaft 19 will rotate and move up and down reciprocally with the transmission sleeve 22. When the driving shaft 19 descends and extends into the impurity removal tank 35 or the cleaning tank 41, under the push of the rotating cylinder 36, the liquid will enter the driving shaft 19, and then be sprayed out from the first spray pipe 29 and the second spray pipe 38 respectively. The ejected water column will impact the upper and lower surfaces of the filter mesh 17. When impacting the lower surface of the filter mesh 17, the backwashing operation can be realized to avoid the problem of fine powder accumulation blocking the filter holes. Impacting the upper surface of the filter mesh 17 can further disperse the fine powder and improve the washing effect;

[0037] When the retaining ring blocks the piston ring 16, it cannot move downward continuously. At this time, the elastic rope 42 will be stretched, and the state of the filter mesh 17 will switch from a cone with a smaller upper part and a larger lower part to a cone with a larger upper part and a smaller lower part. In this way, the fine powder at the upper end of the filter mesh 17 will converge towards the middle, thus avoiding the problem that the fine powder always accumulates around the cone during traditional cleaning. Repeating this process, the fine powder will converge from the periphery to the middle at the upper end of the filter mesh 17 and then disperse from the middle to the periphery, greatly increasing the degree of chaos of the fine powder. Coupled with the impact of the water column, the washing effect on the fine powder is maximized;

[0038] After the washing is completed, the cleaning pool 41 is rotated to the lower part of the washing cylinder 27 by the rotation driving member, and then the power mechanism is started to complete the cleaning operation of the powder material;

[0039] Then, the heating pool is rotated to the position of the washing cylinder 27 by the rotation driving member, which can provide hot air for the flushing mechanism to quickly dry the fine powder, facilitating the later material taking.

[0040] As described above, only the specific embodiments of the present disclosure are provided, but the protection scope of the present disclosure is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present disclosure can easily think of changes or substitutions, which should all be covered within the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should be subject to the protection scope of the claims.

Claims

1. A device for removing impurities and purifying diamond micropowder, comprising a support box (11) and a washing cylinder (27) arranged at the upper left end thereof, the lower end of the washing cylinder (27) being communicated with the inside of the support box (11), and a driving shaft (19) being arranged at the middle position of the upper end of the washing cylinder (27), characterized in that, The upper end of the drive shaft (19) is connected to a power mechanism for driving its rotation and vertical movement. A feeding pipe for feeding materials into the inside thereof is provided outside the washing cylinder (27), and a feeding hopper is provided at the end of the feeding pipe. A piston ring (16) is slidably provided on the inner wall of the washing cylinder (27). An upper connecting ring is rotatably provided outside the drive shaft (19). A filter mesh cloth (17) for filtering the powder is provided between the upper connecting ring and the piston ring (16). The filter mesh cloth (17) is a flexible structure. A flushing mechanism for promoting the flushing of the powder by the washing liquid is further provided on the drive shaft (19). A liquid supply mechanism for providing the washing liquid is provided inside the support box (11); An unloading mechanism is further provided outside the washing cylinder (27). The unloading mechanism includes a sealing ring (30) provided on the inner wall of the washing cylinder (27). The upper end of the sealing ring (30) is connected to a lifting push rod (28) for driving its vertical sliding. A plurality of discharging ports (31) for unloading are distributed outside the washing cylinder (27). An annular collecting groove (32) for collecting the fine powder discharged from the discharging ports (31) is provided outside the washing cylinder (27). A discharging pipe (33) for discharging materials is provided at the lower left side of the annular collecting groove (32); The power mechanism includes a transmission sleeve (22) provided at the upper end of the drive shaft (19). A transmission sliding hole (25) is provided at the upper end of the transmission sleeve (22). A transmission shaft (23) is slidably provided in the transmission sliding hole (25). A limiting groove is provided on the inner wall of the transmission sliding hole (25). A limiting protrusion matched with the limiting groove is provided outside the transmission shaft (23). The cooperation of the limiting groove and the limiting protrusion restricts the relative rotation of the transmission shaft (23) and the transmission sliding hole (25). The upper end of the transmission shaft (23) is connected to a second motor (24) for driving its rotation. The second motor (24) is fixedly connected to the washing cylinder (27) through a positioning frame (26). A pressing wheel (21) is provided outside the transmission sleeve (22). An abutting ring (20) for supporting the pressing wheel (21) is provided at the upper end of the washing cylinder (27). The second motor (24) drives the transmission sleeve (22) to rotate through the transmission shaft (23). The pressing wheel (21) outside the transmission sleeve (22) will be intermittently affected by the different height support surfaces of the abutting ring (20); The flushing mechanism includes a liquid guiding channel (18) arranged inside the driving shaft (19). A pushing blade (37) is provided at the lower end of the driving shaft (19). A rotating cylinder (36) is provided at the lower port position of the pushing blade (37). A lower connecting ring is rotatably arranged on the outer side of the rotating cylinder (36). The lower connecting ring and the piston ring (16) are connected and fixed by a plurality of elastic ropes (42). The function of the elastic ropes (42) is to generate a downward pulling force on the piston ring (16) to keep the filter mesh (17) in a taut state. A first spray pipe (29) is arranged on the outer side of the driving shaft (19) where the top of the liquid guiding channel (18) is located. The lower surface of the first spray pipe (29) is distributed with spray holes for spraying liquid. A second spray pipe (38) communicated with the liquid guiding channel (18) is arranged on the outer side of the driving shaft (19) below the filter mesh (17). The surface of the second spray pipe (38) facing the filter mesh (17) is also provided with spray holes for spraying liquid. A retaining ring for restricting the excessive displacement of the piston ring (16) is arranged on the inner wall at the lower end of the washing cylinder (27). Therefore, when the retaining ring blocks the piston ring (16), it cannot move downward continuously. At this time, the elastic ropes (42) will be stretched, and the state of the filter mesh (17) will be switched from a conical shape with a smaller upper part and a larger lower part to a conical shape with a larger upper part and a smaller lower part; The liquid supply mechanism includes a rotating cavity (34) arranged inside the support box (11). A rotating column (39) is rotatably arranged at the middle position inside the rotating cavity (34). The rotating column (39) is connected to a rotating drive member for driving its rotation. An impurity removal pool (35) and a cleaning pool (41) are distributed on the outer side of the rotating column (39). The impurity removal pool (35) and the cleaning pool (41) are both connected and fixed to the rotating column (39) through connecting rods (40). A chemical solution is contained in the impurity removal pool (35), and a washing liquid is contained in the cleaning pool (41).

2. The diamond micropowder impurity removal and purification device according to claim 1, wherein The first spray pipe (29) and the second spray pipe (38) are arranged staggeredly.

3. The diamond micropowder impurity removal and purification device according to claim 1, characterized in that, A heating pool (43) is further arranged on the outer side of the rotating column (39). Electric heating rods for heating air are arranged in the heating pool (43).

4. The diamond micropowder impurity removal and purification device according to claim 3, characterized in that, The rotating drive member includes a second gear (14) arranged at the upper end of the rotating column (39). A first motor (12) is arranged at the upper end of the support box (11) on one side of the second gear (14). A first gear (13) meshing with the second gear (14) is arranged at the output end of the first motor (12).

5. The diamond micropowder impurity removal and purification device according to claim 4, wherein, Outside the washing cylinder (27), there is also a scraping unit for scraping the fine powder inside the annular collecting tank (32). The scraping unit includes a rotating outer ring (15) rotatably arranged at the upper port of the annular collecting tank (32). Inside the rotating outer ring (15), there is a scraping plate that cooperates with the inner wall of the annular collecting tank (32). On the outside of the rotating outer ring (15), there is a transmission gear ring, which meshes with a scraping gear. The scraping gear is arranged at the output end of a first motor (12). The scraping gear and a first gear (13) are coaxially arranged. The first gear (13) and the output end of the first motor (12) are also rotationally connected through a ratchet. The transmission directions of the upper and lower ratchets are opposite. The scraping gear and the end of the driving shaft of the first motor (12) are rotationally connected through a ratchet.

6. A purification method for the diamond micropowder impurity removal and purification device according to claim 4, characterized in that, It includes the following steps: Step 1: First, add the fine powder to be purified into the washing cylinder (27), and then transfer the impurity removal tank (35) to the lower part of the washing cylinder (27) through a rotating driving member. Step 2: Drive the transmission sleeve (22) to rotate through the transmission shaft (23). The pressing wheel (21) on the outside of the transmission sleeve (22) will intermittently be subjected to the acting force of the protrusions on the pressing ring (20). Combining with the gravity of the transmission sleeve (22) itself, the transmission sleeve (22) will reciprocate up and down along the transmission shaft (23). The driving shaft (19) will rotate and reciprocate up and down along with the transmission sleeve (22). When the driving shaft (19) descends and extends into the impurity removal tank (35), under the push of the rotating cylinder (36), the liquid will enter the driving shaft (19), and then be sprayed out from the first spray pipe (29) and the second spray pipe (38) respectively. The sprayed water column will impact the upper and lower surfaces of the filter mesh cloth (17). When impacting the lower surface of the filter mesh cloth (17), the backwashing operation can be realized to avoid the problem of fine powder accumulation blocking the filter holes. When impacting the upper surface of the filter mesh cloth (17), the fine powder can be further dispersed to improve the washing effect. When the retaining ring blocks the piston ring (16), it cannot continue to move downwards. At this time, the elastic rope (42) will be stretched, and the state of the filter mesh cloth (17) will switch from a conical shape with a smaller upper part and a larger lower part to a conical shape with a larger upper part and a smaller lower part. In this way, the fine powder at the upper end of the filter mesh cloth (17) will converge towards the middle, thus avoiding the problem that the fine powder always accumulates around the cone during traditional cleaning. Repeating this process, the fine powder will converge from the periphery to the middle at the upper end of the filter mesh cloth (17), and then disperse from the middle to the periphery, greatly increasing the degree of chaos of the fine powder. Combining with the impact of the water column, the washing effect on the fine powder is maximized. Step 3: After washing, rotate the cleaning pool (41) to the lower part of the washing cylinder (27) through a rotating driving member, and then start the power mechanism to complete the cleaning operation of the powder material. Step 4: Then rotate the heating pool (43) to the position of the washing cylinder (27) through a rotating driving member, which can provide hot air for the flushing mechanism to quickly dry the fine powder, and then collect the fine powder through the discharging mechanism.

Images