Kaolin screening device with automatic cleaning mesh screen structure

Abstract

The invention discloses a kaolin screening device with an automatic cleaning mesh screen structure, and relates to the technical field of coal series kaolin screening. The kaolin screening device comprises a device body and a feeding inclined hopper fixedly mounted in the middle of the top end of the device body; a crushing mechanism is arranged in the feeding inclined hopper; a filter screen mechanism is arranged at the upper part in the device body, the filter screen mechanism comprises a filter screen flat plate, a cleaning mechanism for preventing blockage and accumulation is arranged above the filter screen mechanism, and the cleaning mechanism comprises a cleaning brush plate capable of reciprocating; wherein a rotary screen mechanism is arranged on the lower portion in the device body, and the rotary screen mechanism comprises a rotary screen circular frame. According to the kaolin screening device with the automatic cleaning mesh screen structure, coal series kaolin is dredged and crushed through the feeding inclined hopper, meanwhile, after the coal series kaolin is screened through the movable filter screen flat plate and the rotary screen round frame, the cleaning mechanism drives sundries to be discharged and collected, and it is avoided that the kaolin and the sundries are mixed to affect subsequent machining.

Description

Technical Field

[0001] The invention relates to the technical field of coal-series kaolin screening, in particular to a kaolin screening device provided with an automatic cleaning mesh screen structure. Background Art

[0002] Coal-bearing kaolin, also known as coal gangue, is a non-metallic mineral. Coal-bearing kaolin refers to clay with kaolinite as the main mineral component in coal-bearing strata. The processing and screening of coal-bearing kaolin is an important link in the kaolin processing process. Screening can remove impurities and particles that do not meet the particle size requirements in the ore, thereby improving the purity and quality of the kaolin product. It can be classified according to particle size, which is conducive to the optimization of subsequent processing procedures and improvement of efficiency.

[0003] The invention with announcement number CN117583230B discloses a crushing drum herb screen with impurity reduction function. By arranging a rotating cylinder and three powerful fans inside the screen cylinder, the device can drive the rotating cylinder and the screen cylinder to rotate through the transmission belt when removing impurities from the rhizomes of angelica sinensis. Then, while the rotating cylinder is rotating, air is blown outward from the inside of the screen cylinder, thereby accelerating the speed at which the soil of the rhizomes of angelica sinensis is crushed and screened out from the screen cylinder.

[0004] The utility model with announcement number CN222306420U discloses a screening device with a soil cleaning function. The traction frame is lifted and lowered regularly up and down by an eccentric wheel, and the screen bucket forms a regular vibration, so that the grains rise and fall on the screen, which is convenient for the soil to fall down. The height limiting plate limits the height of the grain pile on the screen, lowers the height of the grain pile, and makes it easier for the grains to fully contact with the spraying liquid at the side.

[0005] However, the above-disclosed screening device with automatic cleaning mechanism still has the following problems in actual use: although the separation and filtration of impurities are achieved by wind power and spraying, this type of separation method using spraying and wind power is difficult to effectively adapt to filtration in the soil, and spraying and wetting will inevitably cause soil loss, which requires subsequent drying and reprocessing. At the same time, it cannot be discharged immediately after separation, and part of the material sticks to the crushing roller during the crushing process, and the metal scraps in the material cannot be collected, which causes wear of the crushing mechanism and affects the separation efficiency.

[0006] Therefore, we propose a kaolin screening device with an automatic cleaning screen structure to solve the above-mentioned problems. Summary of the invention

[0007] The purpose of the present invention is to provide a kaolin screening device with an automatic cleaning screen structure to solve the existing separation and filtration of impurities by wind and spraying. However, this type of separation method using spraying and wind power is difficult to effectively adapt to filtration in the soil. Spraying and wetting will inevitably cause soil loss, and subsequent drying and reprocessing are required. At the same time, after separation, it is impossible to assist in discharging in the first time. During the crushing process, some materials stick to the crushing roller, and metal scraps in the materials cannot be collected, which causes wear of the crushing mechanism and affects the separation efficiency.

[0008] To achieve the above object, the present invention provides the following technical solution: a kaolin screening device with an automatic cleaning mesh screen structure, comprising a device body, and a feed inclined bucket fixedly installed at the middle of the top of the device body; and further comprising: A crushing mechanism is arranged inside the feed slanted bucket, and the crushing mechanism includes crushing rollers symmetrically distributed in the front-to-back direction, and the crushing mechanism includes guide inclined plates rotatably installed on the front and rear sides of the lower part of the feed slanted bucket; A filter mechanism is arranged above the interior of the device body, and the filter mechanism includes a filter plate, and a cleaning mechanism for preventing blockage and accumulation is arranged above the filter mechanism, and the cleaning mechanism includes a cleaning brush plate that moves back and forth; A rotary screen mechanism is arranged at the lower part of the device body, and the rotary screen mechanism includes a rotary screen round frame, and a rotary screen scraper is rotatably arranged inside the rotary screen round frame.

[0009] Preferably, the crushing roller included in the crushing mechanism is rotatably arranged on the bottom surface of the feed inclined bucket through a bearing, and the ends of the crushing roller outside the right end of the feed inclined bucket are meshed and connected with each other through a transmission gear, and two-way threaded rods are rotatably arranged on both the front and rear sides of the bottom surface outside the feed inclined bucket through bearings, and the right end of the two-way threaded rod is meshed and connected to the end of the crushing roller through a pulley assembly.

[0010] Preferably, the crushing mechanism includes a guide bracket, and the bottom end of the guide bracket is threadedly connected to the left and right outer walls of the front and rear two-way threaded rods, and the top end of the guide bracket slides through the interior of the feed hopper, and a brush arc plate is fixedly provided on the bottom surface of the top end of the guide bracket, and at the same time, a sealing partition that is mutually sleeved is fixedly provided on the top end of the guide bracket to prevent kaolin from overflowing through the slide groove of the guide bracket.

[0011] Preferably, the crushing mechanism includes magnetic protrusions, and the magnetic protrusions are fixedly installed on the bottom surfaces of the front and rear material guide inclined plates at equal distances, and the magnetic protrusions and the top of the guide bracket are distributed in a repulsive manner, and the reciprocating guide bracket repels the magnetic protrusions that contact the bottom surface of the material guide inclined plate, thereby driving the material guide inclined plate to reciprocate and guide the kaolin for crushing.

[0012] Preferably, the filter screen mechanism includes a filter screen plate slidably disposed above the interior of the device body, and a guiding frame fixedly disposed at the right end of the filter screen plate and slidably penetrating the outside of the device body. A contact cam is rotatably disposed inside the guiding frame, and a transmission rotating shaft is fixedly disposed inside the contact cam.

[0013] Preferably, the filter screen mechanism includes a driving motor fixedly installed at the top of the device body, and the bottom end of the output shaft of the driving motor is fixedly connected to the top end of the transmission rotating shaft. Contact turning plates for closing the impurity discharge openings are rotatably disposed at both the left and right ends of the filter screen plate.

[0014] Preferably, the cleaning mechanism includes a cleaning brush plate fittingly sliding on the left and right sides inside the filter screen plate, and the top end of the cleaning brush plate is fixedly connected to the bottom ends of the front and rear guiding brackets. The cleaning brush plate moving to the end of the filter screen plate drives the contact turning plate to turn over to discharge the sundries.

[0015] Preferably, the cleaning mechanism includes impurity discharge sliding plates fixedly installed on both the left and right sides below the interior of the device body, and the top ends of the impurity discharge sliding plates fittingly slide on the bottom surface of the filter screen plate. The impurity discharge sliding plates are used to guide and separate the sundries cleaned and discharged from the inside of the filter screen plate.

[0016] Preferably, the rotary screen mechanism includes a rotary screen circular frame fixedly installed below the interior of the device body. The rotary screen circular frame is used to collect the kaolin screened by the filter screen plate for secondary screening. The rotary screen mechanism includes a rotary screen rotating shaft fixedly installed in the middle of the rotary screen scraper, and the right end of the rotary screen rotating shaft is meshed and connected to the bottom end of the transmission rotating shaft through a bevel gear set.

[0017] Preferably, both the left and right ends of the rotary screen circular frame included in the rotary screen mechanism are in an open structure, and the inner wall of the rotary screen circular frame is in mutual contact with the rotating rotary screen scraper. The rotary screen scraper is used to drive the kaolin to perform fine screening and filtration, and the side of the rotary screen circular frame is convenient for collecting and cleaning the sundries separated for the second time.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows: The kaolin screening device with an automatic cleaning screen structure realizes the guidance and crushing of coal-series kaolin through the feeding inclined hopper. At the same time, after the mobile filter screen plate and the rotary screen circular frame screen the coal-series kaolin, the cleaning mechanism drives the sundries to be discharged and collected, avoiding the mixing of kaolin and sundries and affecting subsequent processing. The specific content is as follows: 1. The feeding inclined hopper is used for the feeding of kaolin, and the external transmission gear drives the crushing roller to rotate, so that the kaolin put into the feeding inclined hopper is crushed by the inwardly rotating crushing roller, and then it is convenient for subsequent separation and treatment through the filter screen mechanism and the rotary screen mechanism.

[0019] The bidirectional threaded rod drives the dredging support to move left and right. After repelling the magnetic bumps at the top, it drives the material guide inclined plate distributed obliquely inside the feeding hopper to swing reciprocally, thereby preventing kaolin from clogging inside the feeding hopper. At the same time, the brush arc plate cleans the kaolin adhered to the surface of the crushing roller and drives the kaolin to be more efficiently fed between the crushing rollers for crushing. At the same time, the magnetic bumps can adsorb the metal waste chips mixed in the kaolin, so as to separate the kaolin more thoroughly.

[0020] 2. The crushed kaolin is carried by the filter screen plate. The driving motor rotates the fixedly connected transmission rotating shaft and the abutting cam. The abutting cam abuts against the guiding frame, so that the guiding frame drives the filter screen plate to move reciprocally in the left and right directions, thereby assisting the kaolin inside the filter screen plate to be filtered and screened.

[0021] 3. The dredging support drives the cleaning brush plate at the bottom to move left and right, so that the sundries move to the outside of the filter screen plate. At the same time, the cleaning brush plate in the shape of holes will also screen the kaolin during the movement, reducing the mis-cleaning caused by carrying the kaolin. The cleaning brush plate abuts against the outer abutting and flipping plate and flips it outwards, thereby pushing the collected sundries into the waste discharging slide plate for discharging and collecting inside the device body.

[0022] 4. The kaolin inside the rotating sieve frame is dispersed by the rotating sieve scraper to achieve fine filtration of the kaolin, while the sundries remaining inside the rotating sieve frame are collected through the outer end of the rotating sieve frame to prevent the kaolin from being mixed with the sundries and affecting subsequent processing. Description of the Drawings

[0023] Figure 1 It is a schematic three-dimensional structure diagram of the whole invention; Figure 2 It is a schematic installation structure diagram of the feeding hopper of the invention; Figure 3 It is a schematic structure diagram after the material guide inclined plate rotates of the invention; Figure 4 It is a schematic installation structure diagram of the rotating sieve frame of the invention; Figure 5 It is a schematic installation structure diagram of the sealing partition of the invention; Figure 6 It is a schematic distribution structure diagram of the dredging support and the material guide inclined plate of the invention; Figure 7 It is a schematic installation structure diagram of the filter screen plate of the invention; Figure 8 It is a schematic sectional structure diagram of the device body of the invention; Figure 9 It is a schematic three-dimensional structure diagram of the cleaning brush plate of the invention; Figure 10 This is a schematic diagram of the opening structure of the friction flip plate of the present invention.

[0024] In the figure: 1. Device body; 2. Feed inclined bucket; 3. Crushing roller; 4. Guide inclined plate; 5. Filter screen plate; 6. Cleaning brush plate; 7. Rotary screen round frame; 8. Rotary screen scraper; 9. Bevel gear group; 10. Transmission gear; 11. Bidirectional threaded rod; 12. Pulley assembly; 13. Guide bracket; 14. Brush arc plate; 15. Magnetic bump; 16. Guide frame; 17. Contact cam; 18. Transmission shaft; 19. Drive motor; 20. Sealing partition; 21. Contact flip plate; 22. Debris removal slide plate; 23. Rotary screen shaft. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the implementation regulations described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] See also Figures 1-10 , the present invention provides the following technical solutions: Embodiment 1: In order to solve the problems existing in the use of the existing kaolin separation device, this embodiment adopts the following technical scheme: a kaolin screening device with an automatic cleaning screen structure, including a device body 1, and a feed inclined bucket 2 fixedly installed in the middle of the top of the device body 1; a crushing mechanism is arranged inside the feed inclined bucket 2, and the crushing mechanism includes crushing rollers 3 symmetrically distributed in the front and rear directions, and the crushing mechanism includes a guide inclined plate 4 rotatably installed on the front and rear sides of the lower part of the feed inclined bucket 2; the crushing roller 3 included in the crushing mechanism is rotatably arranged on the bottom surface of the feed inclined bucket 2 through a bearing, and the end of the crushing roller 3 outside the right end of the feed inclined bucket 2 is meshed with each other through a transmission gear 10, and the front and rear sides of the bottom surface of the outside of the feed inclined bucket 2 are rotatably arranged with a bidirectional threaded rod 11 through a bearing, and the right end of the bidirectional threaded rod 11 is meshed with the end of the crushing roller 3 through a pulley assembly 12.

[0027] like Figure 3 , Figure 5 As shown, the feed hopper 2 is used to feed kaolin. The motor outside the feed hopper 2 drives the connected crushing roller 3 to rotate through the meshing transmission gear 10, so that the kaolin fed into the feed hopper 2 is crushed by the crushing roller 3 rotating inward, which is convenient for subsequent separation and processing through the filter screen mechanism and the rotary screen mechanism.

[0028] The crushing mechanism includes a guide bracket 13, and the bottom end of the guide bracket 13 is threadedly connected to the left and right outer walls of the front and rear two-way threaded rods 11, and the top of the guide bracket 13 slides through the interior of the feed inclined bucket 2, and a brush arc plate 14 is fixedly provided on the bottom surface of the top of the guide bracket 13, and at the same time, a sealing partition 20 that is mutually sleeved is fixedly provided on the top of the guide bracket 13 to prevent kaolin from overflowing from the slide groove of the guide bracket 13; the crushing mechanism includes a magnetic protrusion 15, and the magnetic protrusion 15 is fixedly installed on the bottom surface of the front and rear material guide inclined plates 4 at equal distances, and the magnetic protrusion 15 and the top of the guide bracket 13 are distributed in a repulsive manner, and the reciprocating guide bracket 13 repels the magnetic protrusion 15 that contacts the bottom surface of the material guide inclined plate 4, thereby driving the contacting material guide inclined plate 4 to rotate reciprocatingly to guide the kaolin to be crushed.

[0029] like Figures 5-6 As shown, the crushing roller 3 rotating inside the feed inclined bucket 2 drives the meshing bidirectional threaded rod 11 to rotate through the pulley assembly 12 at the end, and then the guide bracket 13 threadedly connected to the bidirectional threaded rod 11 is driven to move in the left and right directions. During the movement of the feed inclined bucket 2, the guide bracket 13 repels the magnetic protrusion 15 at the top and drives the guide inclined plate 4 obliquely distributed inside the feed inclined bucket 2 to swing back and forth, thereby avoiding kaolin blockage inside the feed inclined bucket 2. At the same time, the brush arc plate 14 cleans the kaolin stuck on the surface of the crushing roller 3, and drives the kaolin to be more efficiently delivered to the crushing rollers 3 for crushing, and the magnetic protrusions 15 distributed at equal distances can absorb the metal waste mixed in the kaolin, thereby separating the kaolin more thoroughly. At the same time, during the movement of the guide bracket 13, it drives the mutually sleeved sealing partitions to move to avoid kaolin overflowing from the slide groove of the guide bracket 13.

[0030] Embodiment 2: In order to solve the problems existing in the use of the existing kaolin separation device, this embodiment adopts the following technical scheme: a filter screen mechanism is arranged above the interior of the device body 1, and the filter screen mechanism includes a filter screen plate 5, and a cleaning mechanism for preventing blockage and accumulation is arranged above the filter screen mechanism, and the cleaning mechanism includes a cleaning brush plate 6 that moves back and forth.

[0031] The filter mechanism includes a filter plate 5 which is slidably arranged on the upper part of the interior of the device body 1, and a guide frame 16 which slides through the outside of the device body 1 is fixedly arranged on the right end of the filter plate 5, and a resistance cam 17 is rotatably arranged inside the guide frame 16, and a transmission shaft 18 is fixedly arranged inside the resistance cam 17.

[0032] The filter sieve mechanism includes a driving motor 19, and the driving motor 19 is fixedly installed at the top of the device body 1. The bottom end of the output shaft of the driving motor 19 is fixedly connected to the top end of the transmission rotating shaft 18. At the left and right ends of the filter sieve flat plate 5, there are rotatably arranged contact flipping plates 21 for closing the impurity discharge openings.

[0033] As Figures 7-9 shown, after the kaolin is crushed, it enters the interior of the device body 1 and is carried by the upper filter sieve flat plate 5. At the same time, the driving motor 19 drives the fixedly connected transmission rotating shaft 18 and the contact cam 17 to rotate. During the rotation of the contact cam 17, it contacts the guiding frame 16 through its end, causing the guiding frame 16 to drive the filter sieve flat plate 5 inside the device body 1 to move reciprocally in the left - right direction, thereby assisting in the filtration and screening of the kaolin inside the filter sieve flat plate 5.

[0034] Embodiment 3: To solve the problems existing in the use of the existing kaolin separation device, therefore, in this embodiment, through the following technical solutions, the cleaning brush plate 6 included in the cleaning mechanism fits and slides on the left and right sides inside the filter sieve flat plate 5. The top end of the cleaning brush plate 6 is fixedly connected to the bottom ends of the front and rear guiding brackets 13. The cleaning brush plate 6 that moves to the end of the filter sieve flat plate 5 is used to drive the contact flipping plate 21 to flip to discharge the sundries; the cleaning mechanism includes a waste discharge slide plate 22, and the waste discharge slide plate 22 is fixedly installed on the left and right sides below the interior of the device body 1. The top end of the waste discharge slide plate 22 fits and slides on the bottom surface of the filter sieve flat plate 5. The waste discharge slide plate 22 is used to guide and separate the sundries cleaned and discharged from inside the filter sieve flat plate 5.

[0035] As Figure 3 、 Figures 9-10 shown, during the movement of the guiding bracket 13 above the device body 1, it drives the cleaning brush plate 6 fixedly connected to its bottom end to move left and right synchronously. The cleaning brush plate 6 drives the blocked (unable to filter and fall) sundries to move to the outside of the filter sieve flat plate 5. At the same time, the cleaning brush plate 6 in the shape of holes also screens the kaolin during the movement, reducing the effect of carrying kaolin for cleaning. The cleaning brush plate 6 that moves to the side contacts the contact flipping plate 21 at the outer end of the filter sieve flat plate 5 and flips it outwards, thereby pushing the collected sundries into the waste discharge slide plate 22 for discharging and collecting inside the device body 1.

[0036] Embodiment 4: To solve the problems existing in the use of the existing kaolin separation device, the following technical solutions are adopted in this embodiment. A rotary sieve mechanism is arranged below the interior of the device body 1, and the rotary sieve mechanism includes a rotary sieve circular frame 7. A rotary sieve scraper 8 is rotatably arranged inside the rotary sieve circular frame 7. The rotary sieve circular frame 7 included in the rotary sieve mechanism is fixedly installed below the interior of the device body 1, and the rotary sieve circular frame 7 is used to collect the kaolin screened by the filter sieve plate 5 for secondary screening. The rotary sieve mechanism includes a rotary sieve rotating shaft 23, and the rotary sieve rotating shaft 23 is fixedly installed in the middle of the rotary sieve scraper 8. The right end of the rotary sieve rotating shaft 23 is meshed and connected to the bottom end of the transmission rotating shaft 18 through a bevel gear set 9.

[0037] The left and right ends of the rotary sieve circular frame 7 included in the rotary sieve mechanism are of an open structure. The inner wall of the rotary sieve circular frame 7 is in mutual contact with the rotating rotary sieve scraper 8. The rotary sieve scraper 8 is used to drive the kaolin to achieve fine screening and filtration. The side of the rotary sieve circular frame 7 is convenient for collecting and cleaning the sundries separated secondly.

[0038] As Figure 4 、 Figures 7-8 shown, the kaolin filtered by the filter sieve plate 5 descends into the interior of the rotary sieve circular frame 7. The rotary sieve circular frame 7 with a circular bottom structure concentrates the kaolin. At the same time, after the rotary sieve rotating shaft 23 is meshed with the transmission rotating shaft 18 through the bevel gear set 9 at the right end, it rotates, and then the kaolin inside the rotary sieve circular frame 7 is dispersed by the rotary sieve scraper 8 to achieve fine filtration of the kaolin. The sundries remaining inside the rotary sieve circular frame 7 are collected through the outer end of the rotary sieve circular frame 7 to prevent the kaolin from being mixed with the sundries and affecting subsequent processing.

[0039] Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A kaolin screening device with an automatic cleaning screen structure, comprising a device body (1), and a feed slant bucket (2) fixedly mounted at the middle of the top of the device body (1); It is characterized in that Also includes: A crushing mechanism is arranged inside the feed slanted bucket (2), and the crushing mechanism includes crushing rollers (3) symmetrically arranged in the front-to-back direction, and the crushing mechanism includes guide inclined plates (4) rotatably mounted on the front and rear sides of the lower part of the feed slanted bucket (2); A filter mechanism is arranged above the interior of the device body (1), and the filter mechanism includes a filter plate (5), and a cleaning mechanism for preventing clogging and accumulation is arranged above the filter mechanism, and the cleaning mechanism includes a cleaning brush plate (6) that moves back and forth; A rotary screen mechanism is arranged at the lower part of the device body (1), and the rotary screen mechanism includes a rotary screen round frame (7), and a rotary screen scraper (8) is rotatably arranged inside the rotary screen round frame (7).

2. A kaolin screening device with an automatic cleaning screen structure according to claim 1, characterized in that: The crushing mechanism comprises a crushing roller (3) which is rotatably arranged on the bottom surface of the feed inclined bucket (2) via a bearing, and the ends of the crushing roller (3) outside the right end of the feed inclined bucket (2) are meshed and connected to each other via a transmission gear (10), and a bidirectional threaded rod (11) is rotatably arranged on both the front and rear sides of the bottom surface of the feed inclined bucket (2) via a bearing, and the right end of the bidirectional threaded rod (11) is meshed and connected to the end of the crushing roller (3) via a pulley assembly (12).

3. The kaolin screening device with an automatic cleaning screen structure according to claim 2, characterized in that: The crushing mechanism comprises a guide bracket (13), wherein the bottom end of the guide bracket (13) is threadedly connected to the left and right outer walls of the bidirectional threaded rods (11) on the front and rear sides, and the top end of the guide bracket (13) slides through the interior of the feed inclined bucket (2), and a brush arc plate (14) is fixedly provided on the bottom surface of the top end of the guide bracket (13), and a sealing partition (20) which is mutually sleeved is fixedly provided on the top end of the guide bracket (13) to prevent kaolin from overflowing through the slide groove of the guide bracket (13).

4. The kaolin screening device with an automatic cleaning screen structure according to claim 3, characterized in that: The crushing mechanism comprises magnetic protrusions (15), and the magnetic protrusions (15) are fixedly installed at equal distances on the bottom surfaces of the front and rear material guide inclined plates (4), and the bottom surface level of the magnetic protrusions (15) is lower than the top surface level of the guide bracket (13), and the reciprocating guide bracket (13) repels the magnetic protrusions (15) that are in contact with the bottom surface of the material guide inclined plate (4), thereby driving the material guide inclined plate (4) to reciprocate and rotate to guide the kaolin to be crushed.

5. The kaolin screening device with an automatic cleaning screen structure according to claim 1, characterized in that: The filter mechanism comprises a filter plate (5) which is slidably arranged above the inside of the device body (1), and a guide frame (16) which slides through the outside of the device body (1) is fixedly arranged at the right end of the filter plate (5), and a resistance cam (17) is rotatably arranged inside the guide frame (16), and a transmission shaft (18) is fixedly arranged inside the resistance cam (17).

6. The kaolin screening device with an automatic cleaning screen structure according to claim 5, characterized in that: The filter mechanism comprises a drive motor (19), and the drive motor (19) is fixedly mounted on the top of the device body (1), and the bottom end of the output shaft of the drive motor (19) is fixedly connected to the top of the transmission shaft (18), and both left and right ends of the filter plate (5) are rotatably provided with a resisting flip plate (21) for closing the impurity discharge window.

7. The kaolin screening device with an automatic cleaning screen structure according to claim 1, characterized in that: The cleaning mechanism comprises a cleaning brush plate (6) which fits and slides on the left and right sides of the inside of the filter screen plate (5), and the top end of the cleaning brush plate (6) is fixedly connected to the bottom ends of the front and rear guide brackets (13), and the cleaning brush plate (6) moved to the end of the filter screen plate (5) is used to contact the flip plate (21) to drive the flip to achieve the discharge of debris.

8. The kaolin screening device with an automatic cleaning screen structure according to claim 7, characterized in that: The cleaning mechanism includes a debris removal slide plate (22), and the debris removal slide plate (22) is fixedly mounted on the left and right sides of the lower interior of the device body (1), and the top end of the debris removal slide plate (22) slides in contact with the bottom surface of the filter screen plate (5), and the debris removal slide plate (22) is used to guide and separate the debris discharged from the interior of the filter screen plate (5).

9. The kaolin screening device with an automatic cleaning screen structure according to claim 1, characterized in that: The rotary screen mechanism comprises a rotary screen frame (7) fixedly mounted at the lower part of the inside of the device body (1), and the rotary screen frame (7) is used to collect kaolin sieved by the filter plate (5) to achieve secondary screening, and the rotary screen mechanism comprises a rotary screen shaft (23), and the rotary screen shaft (23) is fixedly mounted at the middle of the rotary screen scraper (8), and the right end of the rotary screen shaft (23) is meshedly connected to the bottom end of the transmission shaft (18) through a bevel gear set (9).

10. The kaolin screening device with an automatic cleaning screen structure according to claim 9, characterized in that: The left and right ends of the rotary screen frame (7) included in the rotary screen mechanism are open structures, and the inner wall of the rotary screen frame (7) and the rotating rotary screen scraper (8) are in contact with each other, and the rotary screen scraper (8) is used to drive the kaolin to achieve fine screening filtration, and the side of the rotary screen frame (7) is convenient for collecting and cleaning the secondary separated debris.

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