Sorting method of superfine diamond micro-powder

Abstract

The invention relates to the technical field of diamond sorting, and discloses a sorting method for superfine diamond micro-powder, which comprises the following steps of: putting the superfine diamond micro-powder into the inner side of a rotating screen drum; a hole cleaning assembly capable of rotating around the screen drum is mounted on the outer side of the screen drum; the hole cleaning assembly is connected with the screen drum through a clutch structure and rotates along with the screen drum. A hole cleaning structure of the hole cleaning assembly is close to the screen drum along with rotation of the screen drum, and the hole cleaning structure corresponds to screen holes in the upper portion of the screen drum through an alignment structure; the hole cleaning structure acts to penetrate through the screen holes from the outer side of the screen drum to clean the diamond micro-powder blocking the screen holes; the hole cleaning assembly is reset, and screen holes in all parts of the screen drum are cleaned in a circulating and reciprocating mode; the hole cleaning assembly capable of rotating along with the screen drum is arranged, and blockage can be efficiently cleaned without shutdown; linkage and release are achieved through the clutch structure, accurate corresponding to the screen holes is achieved through the alignment structure, the hole cleaning structure can penetrate through the screen holes to clean blockage, damage of diamonds to the screen holes is reduced, and a good cleaning effect is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of diamond sorting, and in particular to a method for sorting ultrafine diamond powder. Background Art

[0002] The sorting of ultrafine diamond powder is achieved by using plate screens or cylindrical screens, such as the invention patent with publication number CN118455066A, a rapid screening method for batch diamonds, the invention patent with publication number CN118270783A, a method for producing fine diamond powder, and the invention patent with publication number CN114522870B, an online automatic detection device for sorting diamond powder.

[0003] In the process of ultrafine diamond powder screening by sieve drum, due to the small particle size of diamond powder, the inner diameter of the sieve hole of the sieve drum is small, which makes the sieve hole easy to be blocked; in the prior art, the conventional sieve hole blocking cleaning method mainly uses brushes and scrapers to clean the materials blocking the sieve hole; brush cleaning causes minimal damage to diamonds and sieve drum, but the brush has little effect on cleaning blocked diamonds, and it is difficult to clean diamonds stuck in the sieve hole, and the cleaning effect is poor; in contrast, the scraper has a strong cleaning force to clean the mesh blockage and a good cleaning effect, but due to the high hardness of diamonds, using a scraper to forcibly scrape the diamonds from the outside of the sieve hole is very likely to cause damage to the sieve hole, affecting the subsequent screening effect, and the scraper is also easily damaged by the high hardness diamond. In addition, the brushes and scrapers in the prior art are not easy to enter the inside of the sieve hole, and the cleaning effect of the sieve hole blockage of the sieve drum is poor. Summary of the invention

[0004] The purpose of the present invention is to provide a method for sorting ultrafine diamond powder in order to solve the above-mentioned problems in the prior art.

[0005] To achieve the above object, the present invention provides the following technical solutions: A method for sorting ultrafine diamond powder, the method comprising the following steps: S1, ultrafine diamond powder is placed inside a rotating sieve drum, smaller diamond powders that meet the particle size requirements pass through the sieve holes of the sieve drum for collection, and larger diamond powders that do not meet the particle size requirements remain in the sieve drum; S2, cleaning the sieve holes of the sieve drum; installing a hole cleaning component that can rotate around the sieve drum on the outside of the sieve drum; the hole cleaning component is connected to the sieve drum through a clutch structure and rotates with the sieve drum; S3, the hole cleaning structure of the hole cleaning assembly rotates with the screen drum and approaches the screen drum, and the hole cleaning structure is made to correspond to the upper part of the screen holes of the screen drum through the alignment structure; S4, the hole cleaning mechanism moves through the sieve holes from the outside of the sieve cylinder to clean the diamond powder that blocks the sieve holes; S5, the hole cleaning assembly is reset, and the sieve holes of each part of the sieve drum are cleaned repeatedly.

[0006] Furthermore, an outer shell is provided on the outside of the screen cylinder, and a center frame is provided on the inside of the screen cylinder. The center frame is rotatably connected to the outer shell, and a reduction motor connected to the center frame is provided at one end of the outer shell. First conical ring covers are provided at both ends of the screen cylinder, and the large end of the first conical ring cover corresponds to and is connected to the screen cylinder.

[0007] Furthermore, a support is provided at the lower side of the shell, and the lower side of the shell is connected to a lower hopper; one end of the shell is connected to a feed hopper, and the feed hopper and the reduction motor are respectively located at both ends of the shell.

[0008] Furthermore, a ring-shaped track is provided on the inner side of the shell, the track is located on the outer side of the screen drum, and the outer side of the track is connected to the inner side of the shell through a plurality of support plates; a movable seat is provided at the end of the hole cleaning assembly, and the track passes through the movable seat and is in sliding contact with the movable seat.

[0009] Furthermore, an arc-shaped hole for the track to pass through is provided in the movable seat, and a groove for the support plate to pass through is provided on the outer side of the movable seat, and the bottom of the groove is connected to the arc-shaped hole; both ends of the groove extend to the two end surfaces of the movable seat, and the ends of the groove are provided with rounded corners.

[0010] Furthermore, the clutch structure includes a brake disc, a brake block cooperating with the brake disc, a first automatic telescopic rod driving the brake block, and a brake frame supporting the first automatic telescopic rod; the brake disc is located outside the end of the screen cylinder, and heat dissipation holes are evenly distributed on the brake disc. The brake frame is connected to the end of the hole cleaning assembly, and two groups of brake blocks and the first automatic telescopic rod are arranged on the brake frame, which are respectively located on both sides of the brake disc.

[0011] Furthermore, when the hole cleaning component is close to the screen drum, the alignment structure makes the hole cleaning structure correspond to the upper part of the screen holes of the screen drum; the alignment structure includes a movable frame and a second automatic telescopic rod that drives the movable frame to move, and the movable frame is slidably connected to the tooth block toward one side of the screen drum, and the moving direction of the tooth block is perpendicular to the moving direction of the movable frame; an alignment gear ring is provided on the outer side of the end of the screen drum to cooperate with the tooth block.

[0012] Furthermore, the hole cleaning structure is connected to the alignment structure, and the hole cleaning structure includes a mounting plate, on which are mounted a plurality of third automatic telescopic rods, the telescopic ends of the third automatic telescopic rods correspond to the sieve holes on the sieve cylinder, and the telescopic ends of the third automatic telescopic rods extend from the outside of the sieve cylinder to push the diamond micropowder that blocks the sieve holes into the sieve cylinder.

[0013] Compared with the prior art, the present invention has the following beneficial effects: The present invention is provided with a hole cleaning component which can rotate with the sieve drum, so that blockage can be cleaned efficiently without stopping the machine; the linkage and release of the hole cleaning component and the sieve drum are realized by the clutch structure, and the accurate correspondence of the sieve holes is realized by the alignment structure, and the blockage can be cleaned through part of the sieve holes by the hole cleaning structure, and the comprehensive blockage cleaning of the sieve drum can be realized by the reciprocating operation of the hole cleaning component; the method of the present invention can reduce the damage of the diamond to the sieve holes and has a better cleaning effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the internal structure of the shell of the present invention when the end plate is removed.

[0015] Figure 2 It is a schematic diagram of the three-dimensional structure from an outer viewing angle of the present invention.

[0016] Figure 3 It is a cross-sectional side view structural schematic diagram of the present invention.

[0017] Figure 4 It is a schematic diagram of the internal structure of steel of the present invention.

[0018] Figure 5 It is a schematic diagram of the rotation support of the hole cleaning component of the present invention.

[0019] Figure 6 It is a schematic diagram of the screen drum and its connection structure of the present invention.

[0020] Figure 7 It is a three-dimensional schematic diagram of the cut-away state of the end portion of the internal structure of the present invention.

[0021] Figure 8 for Figure 7 A partial enlarged schematic diagram.

[0022] Fig. 9 It is a schematic end view of the cut-away state of the end of the internal structure of the present invention.

[0023] Fig.10 for Figure 8 A partial enlarged schematic diagram.

[0024] Fig.11 It is a schematic diagram of the side structure of the hole cleaning component of the present invention.

[0025] Fig.12 It is a schematic diagram of the top view of the hole cleaning assembly of the present invention.

[0026] Fig.13 It is a bottom view structural schematic diagram of the hole cleaning assembly of the present invention.

[0027] In the figure: 1. outer shell; 2. support; 3. screen drum; 4. center frame; 5. reduction motor; 6. feed hopper; 7. lower hopper; 8. first conical ring cover; 9. second conical ring cover; 10. brake disc; 11. heat dissipation hole; 12. track; 13. support plate; 14. frame; 15. movable seat; 16. arc hole; 17. groove; 18. fillet; 19. brake frame; 20. brake block; 21. first automatic telescopic rod; 22. movable frame; 23. second automatic telescopic rod; 24. mounting plate; 25. gear block; 26. guide rod; 27. alignment gear ring; 28. third automatic telescopic rod; 29. ​​end door. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical scheme and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention, that is, the embodiments described are only part of the embodiments of the present invention, rather than all of the embodiments. The components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0029] It should be noted that relational terms such as "first", "second" and "third" are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0030] In the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" that may appear should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0031] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the term "provided with" that may appear should be understood in a broad sense. For example, the object "provided with" may be a part of the body, or may be arranged separately from the body and connected to the body, and the connection may be a detachable connection or an inseparable connection. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0032] Specific embodiments of the method for sorting ultrafine diamond powder provided by the present invention: See also Figure 1-13 , a method for sorting ultrafine diamond powder, the method comprising the following steps: S1, placing ultrafine diamond powder into the inner side of the rotating sieve drum 3, smaller diamond powder that meets the particle size requirements passes through the sieve holes of the sieve drum 3 for collection, and larger diamond powder that does not meet the particle size requirements remains in the sieve drum 3; S2, cleaning the sieve holes of the sieve drum 3; installing a hole cleaning component that can rotate around the sieve drum 3 on the outside of the sieve drum 3; the hole cleaning component is connected to the sieve drum 3 through a clutch structure and rotates with the sieve drum 3; S3, the hole cleaning structure of the hole cleaning assembly rotates with the screen drum 3 to approach the screen drum 3, and the hole cleaning structure is made to correspond to part of the screen holes on the screen drum 3 through the alignment structure; S4, the hole cleaning mechanism moves through the sieve holes from the outside of the sieve cylinder 3 to clean the diamond powder that blocks the sieve holes; S5, the hole cleaning component is reset and separated from the sieve drum 3, and then the hole cleaning component is activated again to clean the sieve holes, and the sieve holes of each part of the sieve drum 3 are cleaned in a reciprocating cycle.

[0033] The present embodiment provides a sorting device for ultrafine diamond powder, the sorting device includes a sieve drum 3, and sieve holes are evenly distributed on the sieve drum 3; an outer shell 1 is provided on the outer side of the sieve drum 3, the sieve drum 3 is located in the outer shell 1, and a center frame 4 is provided on the inner side of the sieve drum 3, the center frame 4 includes a center axis and a rod body, the center axis is located at the center of the sieve drum 3, the rod body is connected between the center axis and the inner side of the sieve drum 3, the center axis of the center frame 4 is rotatably connected to the outer shell 1, and a reduction motor 5 connected to the center frame 4 is provided at one end of the outer shell 1, the output shaft of the reduction motor 5 is connected to the center axis, and the sieve drum 3 is rotated under the support of the outer shell 1 through the center frame 4.

[0034] A feed hopper 6 is connected to the upper part of one end of the housing 1. The feed hopper 6 and the reduction motor 5 are respectively located at the two ends of the housing 1. A support 2 is provided at the lower side of the housing 1. The lower side of the housing 1 is connected to a lower hopper 7. The diamond powder to be screened is added into the housing 1 from the feed hopper 6. The diamond powder enters the inner side of the screen drum 3. The rotation of the screen drum 3 and the gravity of the diamond powder make the smaller diamond powder pass through the sieve holes of the screen drum 3 to the lower part of the housing 1 outside the screen drum 3, and then pass through the lower hopper 7 to be discharged from the housing 1. An end door 29 is provided at one end of the housing 1. The end door 29 and the feed hopper 6 are located at the same end of the housing 1, and the end door 29 is located at the lower side of the feed hopper 6. After the sorting is completed, the end door 29 is opened, so that the suction pipe of the negative pressure suction device passes through the end door 29 and extends into the inside of the screen drum 3, and the larger diamond powder remaining in the screen drum 3 is sucked out to achieve rapid discharge. The support 2 is U-shaped and supported on the lower side of the housing 1, and a vertical gap is provided between the lower end of the lower hopper 7 and the support 2, and the gap is used to place a container for collecting smaller diamond powder.

[0035] The first conical ring cover 8 is provided at both ends of the screen drum 3, and the large end of the first conical ring cover 8 corresponds to and is connected to the screen drum 3; the first conical ring cover 8 makes the two ends of the screen drum 3 close, and the inner diameter of the end of the first conical ring cover 8 is smaller than the inner diameter of the screen drum 3. During the rotation of the screen drum 3, the diamond powder is not easily discharged from the end of the screen drum 3 due to the protection of the first conical ring cover 8, so that the screen drum 3 can fully sort the diamond powder. The inner sides of both ends of the shell 1 are provided with second conical ring covers 9 that match the first conical ring cover 8. The second conical ring cover 9 is concentric with the first conical ring cover 8 and has the same taper. The end of the second conical ring cover 9 away from the shell 1 is located inside the first conical ring cover 8. There is a small gap between the first conical ring cover 8 and the second conical ring cover 9, which is smaller than half of the inner diameter of the sieve hole, so that the diamond powder can be prevented from entering the outer side of the screen drum 3 and the shell 1 from the end of the screen drum 3, and the diamond powder can be fully sorted.

[0036] In order to realize that the hole cleaning assembly can clean the sieve holes without stopping the machine, the hole cleaning assembly can rotate around the sieve drum 3, and the hole cleaning assembly includes a rectangular frame 14. A circular rod-shaped track 12 is provided on the inner side of the shell 1, and the track 12 concentrically surrounds the outer side of the sieve drum 3. There are two tracks 12, and the two tracks 12 are parallel and respectively located on the outer sides of the two ends of the sieve drum 3. The outer sides of the tracks 12 are connected to the inner side of the shell 1 through a number of support plates 13; a movable seat 15 is provided at the end of the hole cleaning assembly, and specifically, the movable seat 15 is connected to the frame 14, and the two ends of the frame 14 are connected to the movable seat 15, and the two tracks 12 pass through the movable seats 15 at the two ends of the hole cleaning assembly respectively and are in sliding contact with the movable seats 15.

[0037] The movable seat 15 is provided with an arc hole 16 for the track 12 to pass through. The arc hole 16 allows the movable seat 15 to slide along the track 12, thereby allowing the hole cleaning assembly to move along the track 12, and the hole cleaning assembly can rotate around the screen drum 3. The track 12 contacts the inner wall of the arc hole 16 and has a certain damping; the outer side of the movable seat 15 is provided with a groove 17 for the support plate 13 to pass through, and the bottom of the groove 17 is connected to the arc hole 16; the two ends of the groove 17 extend to the two end surfaces of the movable seat 15, and the ends of the groove 17 are provided with rounded corners 18. When the movable seat 15 moves along the track 12, the groove 17 with rounded corners 18 at the ends can make it easier for the support plate 13 to pass through the movable seat 15. While ensuring the stability of the track 12, the support plate 13 cooperates with the groove 17 without interfering with the movement of the movable seat 15 and the hole cleaning assembly.

[0038] The hole cleaning component does not have independent rotational power. The movement of the hole cleaning component rotating around the screen drum 3 under the support of the track 12 relies on the power of the screen drum 3. This has the advantage that it can move synchronously with the screen drum 3, and the two are relatively stationary, which is convenient for cleaning the blockage of the screen holes of the screen drum 3. The hole cleaning component also needs to adjust its position relative to the screen drum 3. Therefore, a clutch structure is set between the hole cleaning component and the screen drum 3. When the clutch structure forms a linkage, the hole cleaning component rotates with the screen drum 3. When the clutch structure is separated, the hole cleaning component no longer rotates with the screen drum 3. In this embodiment, the clutch structure adopts a friction clutch.

[0039] Two groups of clutch structures are provided, and the two groups are respectively connected to the movable seats 15 at both ends of the hole cleaning assembly. The clutch structure includes a brake disc 10, a brake block 20 matched with the brake disc 10, a first automatic telescopic rod 21 driving the brake block 20, and a brake frame 19 supporting the first automatic telescopic rod 21; the brake disc 10 is located outside the end of the sieve cylinder 3, and the brake disc 10 is arranged outside both ends of the sieve cylinder 3. The brake disc 10 has heat dissipation holes 11 evenly distributed on the brake disc 10. The brake disc 10 with the heat dissipation holes 11 can enhance the heat dissipation effect of the brake disc 10 and reduce the deformation of the brake disc 10 during the frictional bonding process. The brake frame 19 is U-shaped, and the U-shaped brake frame 19 corresponds to the outer side of the brake disc 10. The brake frame 19 is connected to the end of the hole cleaning component. Specifically, the brake frame 19 is connected to one side of the movable seat 15; two groups of brake blocks 20 and a first automatic telescopic rod 21 are arranged on the brake frame 19, which are respectively located on both sides of the brake disc 10; the brake blocks 20 are all located on the inner side of the brake frame 19 and are respectively located on both sides of the brake disc 10. The first automatic telescopic rod 21 is installed on the brake frame 19, and the brake blocks 20 are driven. When the telescopic end of the first automatic telescopic rod 21 is extended, the brake blocks 20 are close to the brake disc 10 to form a friction brake, thereby causing the brake frame 19, the movable seat 15 and the frame 14 to rotate with the brake disc 10 and the screen drum 3; when the telescopic end of the first automatic telescopic rod 21 is retracted, the brake blocks 20 are separated from the brake disc 10, and the rotation of the screen drum 3 and the brake disc 10 no longer drives the brake frame 19, the movable seat 15 and the frame 14 to rotate, that is, it no longer drives the hole cleaning component to rotate.

[0040] The sieve holes are evenly distributed on the sieve drum 3. Since the clutch structure realizes the linkage between the hole cleaning component and the sieve drum 3 by friction, when the clutch structure is stably combined, the hole cleaning structure of the hole cleaning component cannot guarantee to completely correspond to the sieve holes. Therefore, it is necessary to first make the hole cleaning structure correspond to the sieve holes, and then make the hole cleaning structure act to clean the blocked sieve holes. This embodiment adopts a counterpoint structure to realize the correspondence between the hole cleaning structure and the sieve holes.

[0041] When the hole cleaning component is close to the screen drum 3, the alignment structure makes the hole cleaning structure correspond to the upper part of the screen holes of the screen drum 3; the alignment structure includes a movable frame 22 and a second automatic telescopic rod 23 that drives the movable frame 22 to move, and the movable frame 22 is slidably connected to the tooth block 25 toward one side of the screen drum 3, and the moving direction of the tooth block 25 is perpendicular to the moving direction of the movable frame 22. A guide rod 26 is provided on the movable frame 22, and the guide rod 26 passes through the tooth block 25, and the tooth block 25 slides along the guide rod 26; an alignment gear ring 27 is provided on the outer side of the end of the screen drum 3 to cooperate with the tooth block 25.

[0042] Two groups of alignment structures are provided, which are respectively located at the two ends of the frame 14; the second automatic telescopic rod 23 is installed at the end of the frame 14, and its telescopic end is connected to the movable frame 22. When the telescopic end of the second automatic telescopic rod 23 is retracted, the tooth block 25 is separated from the alignment gear ring 27 and there is a gap; when the telescopic end of the second automatic telescopic rod 23 is extended (the clutch structure is combined, and the hole cleaning component rotates synchronously with the screen drum 3), the movable frame 22 and the tooth block 25 are driven by the second automatic telescopic rod 23 to approach the alignment gear ring 27, and the teeth of the tooth block 25 and the alignment gear ring 27 gradually form an accurate match. In the process of the tooth block 25 cooperating with the alignment gear ring 27, the tooth block 25 can slide along the guide rod 26. Even if there is a misalignment, since the tooth block 25 can be laterally translated along the guide rod 26 when approaching the alignment gear ring 27, the alignment of the tooth block 25 can be finally achieved, and the hole cleaning structure is connected to the tooth block 25. After the tooth block 25 is aligned, the hole cleaning structure can correspond to the sieve hole of the screen drum 3. In order to facilitate alignment, the teeth of the gear block 25 and the alignment gear ring 27 are both triangular teeth.

[0043] The hole cleaning structure is connected to the alignment structure, and the hole cleaning structure includes a mounting plate 24. Specifically, tooth blocks 25 are connected to both ends of the mounting plate 24; a number of third automatic telescopic rods 28 are installed on the mounting plate 24. In this embodiment, the mounting plate 24 is a flat structure, and three rows of third automatic telescopic rods 28 are arranged on the mounting plate 24. The middle row of third automatic telescopic rods 28 is perpendicular to the mounting plate 24; the two rows of third automatic telescopic rods 28 on both sides are symmetrical and not perpendicular to the mounting plate 24, but the angle is close to ninety degrees, which is convenient for corresponding to different rows of sieve holes on the screen cylinder 3. The circumference of each row of sieve holes is evenly distributed on the sieve cylinder 3, and each row of sieve holes is arranged axially along the sieve cylinder 3. In this embodiment, the number of teeth of a circle of alignment gear ring 27 should be the same as the number of rows of sieve holes on the sieve cylinder 3; the tooth block 25 has two teeth that cooperate with the alignment gear ring 27. After the alignment structure is completed, the telescopic ends of the third automatic telescopic rod 28 correspond to the sieve holes on the sieve cylinder 3, the outer diameter of the telescopic end of the third automatic telescopic rod 28 is smaller than the inner diameter of the sieve holes, and the end of the telescopic end of the third automatic telescopic rod 28 can be set to a cone; the telescopic end of the third automatic telescopic rod 28 extends from the outside of the sieve cylinder 3 to push the diamond micropowder blocking the sieve holes into the sieve cylinder 3; the diamond micropowder blocking the inner end of the sieve holes is pushed into the sieve cylinder 3 from the outside of the sieve cylinder 3, so that the sieve hole blockage is cleared, and the force applied along the axial direction of the sieve hole can reduce the damage of the diamond to the sieve hole and the sieve cylinder 3; reverse cleaning reduces the difficulty of blockage cleaning; the diamond is returned to the sieve cylinder 3, and the diamond will not be forced to pass through the sieve hole, thereby ensuring the accuracy of sorting. In some embodiments, tiny sieve holes are evenly arranged on the sieve cylinder 3 to adapt to the screening of smaller and finer diamond powders. However, at this time, the outer diameter of the telescopic end of the automatic telescopic rod in the prior art cannot be smaller than the tiny sieve hole. Therefore, a number of bristles can be set at the end of the telescopic end of the third automatic telescopic rod 28. The bristles can be made of plastic wire or steel wire. The bristles are connected to the end surface of the telescopic end, and the extension direction of the bristles is parallel to the third automatic telescopic rod. When cleaning the sieve hole, the telescopic end of the third automatic telescopic rod 28 no longer enters the sieve hole, but the bristles enter and pass through the sieve hole to remove the diamond powder at the inner end of the sieve hole. In order to cooperate with the bristles, a chamfer is set on the outer side of the sieve cylinder 3 corresponding to the sieve hole.

[0044] In this embodiment, the first automatic telescopic rod 21, the second automatic telescopic rod 23 and the third automatic telescopic rod 28 are all electric telescopic rods; in some embodiments, an electric slip ring is provided at the end of the housing 1 to supply power to the electric telescopic rod in the rotating hole cleaning assembly. In other embodiments, the hole cleaning assembly may carry a battery to supply power to the first automatic telescopic rod 21, the second automatic telescopic rod 23 and the third automatic telescopic rod 28.

[0045] The reset process after cleaning is that the hole cleaning structure is reset first, then the alignment structure is reset, and then the clutch structure is separated, the hole cleaning component loses power, and the hole cleaning component no longer rotates with the screen drum 3; the screen drum 3 and the hole cleaning component rotate relative to each other, the position of the hole cleaning component changes relative to the screen drum 3, and the clutch structure separates for a certain time interval and then recombines, and the time interval of the clutch structure separation can be set to two seconds; that is, after the position of the hole cleaning component corresponding to the screen drum 3 changes, the hole cleaning component is linked with the screen drum 3 again to clean the screen holes at other positions. This cycle is repeated to clean the screen holes of each part of the screen drum 3.

[0046] Finally, it should be noted that the above 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 aforementioned embodiments, those skilled in the art can still modify the technical solutions recorded in the aforementioned embodiments without creative work, or replace some of the technical features therein with equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A method for sorting ultrafine diamond powder, characterized in that: The method comprises the following steps: S1, placing ultrafine diamond powder inside a rotating sieve drum (3), wherein smaller diamond powder meeting the particle size requirements passes through the sieve holes of the sieve drum (3) for collection, and larger diamond powder not meeting the particle size requirements remains in the sieve drum (3); S2, cleaning the sieve holes of the sieve drum (3); installing a hole cleaning component on the outside of the sieve drum (3) that can rotate around the sieve drum (3); the hole cleaning component is connected to the sieve drum (3) via a clutch structure and rotates with the sieve drum (3); S3, as the sieve drum (3) rotates, the hole cleaning structure of the hole cleaning assembly approaches the sieve drum (3), and the hole cleaning structure is made to correspond to the sieve holes on the upper part of the sieve drum (3) through the alignment structure; S4, the hole cleaning mechanism moves through the sieve holes from the outside of the sieve cylinder (3) to clean the diamond powder that blocks the sieve holes; S5, the hole cleaning assembly is reset, and the sieve holes of each part of the sieve cylinder (3) are cleaned in a reciprocating cycle.

2. The method for separating ultrafine diamond powder according to claim 1, characterized in that: The outer side of the sieve drum (3) is provided with an outer shell (1), the inner side of the sieve drum (3) is provided with a center frame (4), the center frame (4) is rotatably connected to the outer shell (1), one end of the outer shell (1) is provided with a reduction motor (5) connected to the center frame (4), and the two ends of the sieve drum (3) are provided with a first conical ring cover (8), the large end of the first conical ring cover (8) corresponds to and is connected to the sieve drum (3).

3. The method for separating ultrafine diamond powder according to claim 2, characterized in that: A support (2) is provided on the lower side of the shell (1), and the lower side of the shell (1) is connected to a lower hopper (7); one end of the shell (1) is connected to a feed hopper (6), and the feed hopper (6) and the reduction motor (5) are respectively located at two ends of the shell (1).

4. The method for separating ultrafine diamond powder according to claim 2, characterized in that: A circular rod-shaped track (12) is provided on the inner side of the shell (1), the track (12) is located on the outer side of the screen drum (3), and the outer side of the track (12) is connected to the inner side of the shell (1) via a plurality of support plates (13); a movable seat (15) is provided at the end of the hole cleaning assembly, and the track (12) passes through the movable seat (15) and is in sliding contact with the movable seat (15).

5. The method for separating ultrafine diamond powder according to claim 4, characterized in that: The movable seat (15) is provided with an arc-shaped hole (16) for the track (12) to pass through, and the outer side of the movable seat (15) is provided with a groove (17) for the support plate (13) to pass through, and the bottom of the groove (17) is connected to the arc-shaped hole (16); both ends of the groove (17) extend to the two end surfaces of the movable seat (15), and the ends of the groove (17) are provided with rounded corners (18).

6. The method for separating ultrafine diamond powder according to claim 1, characterized in that: The clutch structure comprises a brake disc (10), a brake block (20) matched with the brake disc (10), a first automatic telescopic rod (21) driving the brake block (20), and a brake frame (19) supporting the first automatic telescopic rod (21); the brake disc (10) is located outside the end of the screen drum (3), the brake disc (10) is evenly distributed with heat dissipation holes (11), the brake frame (19) is connected to the end of the hole cleaning component, and two groups of brake blocks (20) and the first automatic telescopic rod (21) are arranged on the brake frame (19), which are respectively located on both sides of the brake disc (10).

7. The method for separating ultrafine diamond powder according to claim 1, characterized in that: When the hole cleaning component approaches the screen drum (3), the alignment structure makes the hole cleaning structure correspond to the upper screen holes of the screen drum (3); the alignment structure comprises a movable frame (22) and a second automatic telescopic rod (23) for driving the movable frame (22) to move; the movable frame (22) is slidably connected to a tooth block (25) toward one side of the screen drum (3); the moving direction of the tooth block (25) is perpendicular to the moving direction of the movable frame (22); and an alignment gear ring (27) is provided on the outer side of the end of the screen drum (3) and is aligned with the tooth block (25).

8. The method for separating ultrafine diamond powder according to claim 1, characterized in that: The hole cleaning structure is connected to the alignment structure, and comprises a mounting plate (24). A plurality of third automatic telescopic rods (28) are mounted on the mounting plate (24). The telescopic ends of the third automatic telescopic rods (28) correspond to the sieve holes on the sieve cylinder (3). The telescopic ends of the third automatic telescopic rods (28) extend from the outside of the sieve cylinder (3) to push the diamond micropowder blocking the sieve holes into the sieve cylinder (3).

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