Gypsum crystal filtering device

Abstract

The invention relates to the technical field of gypsum filtering, and discloses a gypsum crystal filtering device which comprises a base, a plurality of springs are arranged on the base, a screen seat is arranged on the springs, a vibration motor is arranged in the center of the screen seat, a plurality of detachable screen frames are arranged on the screen seat, and detachable screen meshes are arranged in the screen frames. A first cleaning rod and a second cleaning rod are arranged at the positions, located on the upper portion and the lower portion of the screen body, in the screen frame correspondingly, and the first cleaning rod moves along the circumference to clean the surface of the screen body. And by arranging the second cleaning rod and the removing mechanism, the materials which are blocked deeply on the screen are removed, the aperture of the screen is kept smooth, and therefore manual taking out and cleaning by workers are not needed.

Description

Technical Field

[0001] The present invention relates to the technical field of gypsum filtration, and specifically refers to a gypsum crystal filtration device. Background Art

[0002] Gypsum crystals generally refer to raw gypsum, with a chemical composition of calcium sulfate dihydrate. Its naturally formed crystals are white in a pure state, but may also exhibit colors such as yellow, red, and brown due to impurities.

[0003] After the raw gypsum is mined and initially dried, the gypsum ore is coarsely crushed by a crusher to make it into smaller particles, and then the crushed gypsum particles are further ground by a mill to reach the required fineness. Then, the gypsum powder is sent into a calcination device. During the calcination process, the raw gypsum will lose some crystal water and convert into hemihydrate gypsum. Finally, the gypsum powder is classified by a screening and filtering device to meet the needs of different users.

[0004] When classifying gypsum powder, a vibrating screen is usually used to filter and screen the gypsum. By setting multiple layers and different mesh sizes of the screen mesh, the classification of gypsum powder is achieved. Since the gypsum powder particles are relatively fine and the screen mesh aperture is also relatively fine, in order to prevent the gypsum powder from clogging the aperture, a cleaning brush is generally set on the screen mesh. For the gypsum powder that blocks the aperture but has a shallow clogging depth, the cleaning brush can well remove it. However, for the gypsum powder stuck in the aperture and with a deep clogging depth, it is very difficult for the cleaning brush to remove it, resulting in poor cleaning effect. Over time, it is necessary to manually remove the gypsum powder on the filter mesh. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to overcome the above difficulties and provide a gypsum crystal filtration device.

[0006] To solve the above technical problem, the technical solution provided by the present invention is: a gypsum crystal filtration device, including a base, a plurality of springs are provided on the base, a screen base is provided on the springs, a detachable screen frame is provided on the screen base, a detachable screen mesh is provided inside the screen frame. A cleaning rod one and a cleaning rod two are respectively provided above and below the screen mesh inside the screen frame. The cleaning rod one makes a circular motion to clean the surface of the screen mesh. A removing mechanism for removing the materials blocking the screen mesh is provided on the screen frame in cooperation with the cleaning rod two. A driving mechanism for driving the cleaning rod one and the cleaning rod two to make a circular motion is provided on the screen frame. The cleaning rod one cleans the materials with a shallow blockage depth on the surface of the screen mesh, the removing mechanism cooperates with the cleaning rod two to clean the materials with a deeper blockage depth, and the driving mechanism drives the cleaning rod one and the cleaning rod two to move synchronously.

[0007] As an improvement, a ring is rotatably arranged on the sieve frame. The second cleaning rod is arranged on the inner wall of the ring. One end of the second cleaning rod extends to the center of the sieve mesh. The second cleaning rod is attached to the lower surface of the sieve mesh. An L-shaped rod is arranged on the inner wall of the ring. The first cleaning rod is arranged at one end of the L-shaped rod. The first cleaning rod is attached to the upper surface of the sieve mesh. Only the first cleaning rod is arranged on the topmost ring, and only the second cleaning rod is arranged on the lowermost ring. The second cleaning rod is above the first cleaning rod.

[0008] As an improvement, the sieve mesh is slidably arranged up and down in the sieve frame. An extension plate is arranged on the sieve mesh. Elastic pieces are arranged on the bottom surface of the extension plate. Arc-shaped blocks are arranged at the ends of the elastic pieces. The arc-shaped blocks are in contact with the ring.

[0009] As an improvement, the removing mechanism includes a rotating ring rotatably arranged in the sieve frame. A plurality of sockets are arranged on the rotating ring. A first plug post is movably inserted into the socket, and a first return spring is arranged between the first plug post and the socket. One end of the first plug post is provided with a first magnetic attraction block. One end of the first magnetic attraction block is provided with an abutting block. A second magnetic attraction block cooperating with the first magnetic attraction block is arranged on the ring below the rotating ring. An adjusting mechanism for adjusting the position of the abutting block is arranged in the sieve frame. The ring drives the second magnetic attraction block to move in a circular motion. When the second magnetic attraction block is below the first magnetic attraction block, the second magnetic attraction block attracts the first magnetic attraction block and drives the first plug post to move downwards. The abutting block impacts the sieve mesh and makes the sieve mesh move downwards, so that the second cleaning rod is inserted into the holes of the sieve mesh, and the blocked materials are located on the sieve mesh. The first cleaning rod cleans and discharges them.

[0010] As an improvement, the adjusting mechanism includes a fixed seat on the rotating ring. A second plug post is movably inserted into the fixed seat. A second return spring is arranged between the second plug post and the bottom surface of the fixed seat. A fixing plate is arranged on the second plug post. An extension post is arranged on one side of the fixing plate. A guiding groove cooperating with the extension post is arranged on the inner wall of the sieve frame. A moving mechanism for driving the extension post to slide in the guiding groove is arranged on the ring.

[0011] As an improvement, the guiding groove includes an upper inclined groove, a horizontal groove and a lower inclined groove which are connected in sequence.

[0012] As an improvement, the moving mechanism includes a vertical rod arranged on the L-shaped rod. One end of the fixing plate is provided with a driving post. A driving rod cooperating with the driving post is arranged on the vertical rod. One end of the driving rod is a slope. A push rod cooperating with the fixing plate is arranged on the vertical rod. The rotation of the ring drives the driving rod to move in a circular motion. One end of the slope of the driving rod abuts against the driving post. The continuous movement of the driving rod drives the driving post to move upwards. The driving post drives the fixing plate to move upwards. The push rod drives the fixing plate to slide after moving upwards.

[0013] The advantages of the present invention compared with the prior art are as follows: 1. Compared with the prior art where a rotating shaft passing through the sieve is arranged inside the sieve and cleaning brushes are arranged on the rotating shaft, resulting in the inutilization of the sieve part where the rotating shaft is located and reducing the overall area of the sieve, the present invention can keep the sieve intact by setting a circular ring, a first cleaning rod, and a second cleaning rod, and arranging a driving mechanism for driving the circular ring to rotate outside the sieve frame. Meanwhile, a cleaning mechanism is set under the condition that the overall area of the sieve remains unchanged, improving the filtering efficiency. 2. The first cleaning rod is set to remove the materials that are not deeply blocked on the sieve, and the second cleaning rod and the removing mechanism are set to remove the materials that are deeply blocked on the sieve, keeping the aperture of the sieve unobstructed, so that there is no need for workers to manually take out and clean. 3. The second cleaning rod and the removing mechanism push out the materials that are deeply blocked from the sieve holes, and then the first cleaning rod will clean the pushed-out materials and discharge them from the sieve frame. 4. By setting an adjusting mechanism, after clearing the blocked holes in a part of the sieve, it can automatically switch to other parts to dredge the blocked holes. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a three-dimensional view of a gypsum crystal filtering device of the present invention.

[0015] Figure 2 is an exploded view of a gypsum crystal filtering device of the present invention.

[0016] Figure 3 is a half-sectional view of a gypsum crystal filtering device of the present invention.

[0017] Figure 4 is a sectional view of a gypsum crystal filtering device of the present invention.

[0018] Figure 5 is a three-dimensional view of a sieve of a gypsum crystal filtering device of the present invention.

[0019] Figure 6 is a schematic diagram of a removing mechanism of a gypsum crystal filtering device of the present invention.

[0020] Figure 7 is a schematic diagram of an adjusting mechanism of a gypsum crystal filtering device of the present invention.

[0021] Figure 8 is a schematic diagram of a guiding groove of a gypsum crystal filtering device of the present invention.

[0022] Figure 9 is a schematic diagram of a driving mechanism of a gypsum crystal filtering device of the present invention.

[0023] As shown in the figure: 1. Base; 11. Spring; 12. Sieve base; 13. Vibration motor; 14. Sieve frame; 15. Sieve mesh; 16. Extension plate; 17. Elastic sheet; 18. Arc-shaped block; 19. Arc-shaped clamping plate; 110. Discharge port; 111. Material cover; 112. Feed hole; 2. Cleaning rod one; 3. Cleaning rod two; 4. Removal mechanism; 41. Rotating ring; 42. Socket; 43. Plug post one; 44. Return spring one; 45. Magnetic attraction block one; 46. Contact block; 47. Magnetic attraction block two; 5. Driving mechanism; 51. Support plate; 52. Motor; 53. Rotating shaft; 54. Gear one; 55. Gear two; 6. Ring; 61. L-shaped rod; 7. Adjusting mechanism; 71. Fixed seat; 72. Plug post two; 73. Return spring two; 74. Fixed plate; 75. Extension post; 76. Guide groove; 761. Upper inclined groove; 762. Lower inclined groove; 763. Horizontal groove; 764. Inclined plate; 8. Moving mechanism; 81. Vertical rod; 82. Driving column; 83. Driving rod; 84. Push rod. Detailed implementation mode

[0024] The present invention will be further described in detail below with reference to the accompanying drawings.

[0025] Combined with the attached Figure 1 、attached Figure 2 、attached Figure 3 As shown, a gypsum crystal filtering device includes a base 1. A plurality of springs 11 are provided on the base 1. A sieve base 12 is provided on the springs 11. A vibration motor 13 is provided at the center of the sieve base 12. A plurality of detachable sieve frames 14 are provided on the sieve base 12. A detachable sieve mesh 15 is provided inside the sieve frame 14. A discharge port 110 is provided on the sieve frame 14. A material cover 111 is provided on the uppermost sieve frame 14. A feed hole 112 is provided on the material cover 111. A cleaning rod one 2 and a cleaning rod two 3 are respectively provided above and below the sieve mesh 15 inside the sieve frame 14. The cleaning rod one 2 makes a circular motion to clean the surface of the sieve mesh 15. A removal mechanism 4 for removing the material blocking the sieve mesh 15 in cooperation with the cleaning rod two 3 is provided on the sieve frame 14. A driving mechanism 5 for driving the cleaning rod one 2 and the cleaning rod two 3 to make a circular motion is provided on the sieve frame 14; The cleaning rod one 2 cleans the material with not deep blockage on the surface of the sieve mesh 15. The removal mechanism 4 cooperates with the cleaning rod two 3 to clean the material with deeper blockage. The driving mechanism 5 drives the cleaning rod one 2 and the cleaning rod two 3 to move synchronously.

[0026] Working principle of the present invention: Put gypsum powder into the sieve frame 14 from the feed hole 112. The gypsum powder falls on the sieve mesh 15. Start the vibration motor 13 to screen and filter the gypsum powder. Start the driving mechanism 5. The driving mechanism 5 drives the cleaning rod one 2 and the cleaning rod two 3 to move along the sieve mesh 15 to clean the materials with not deep blockage on the surface of the sieve mesh 15. The removing mechanism 4 cooperates with the cleaning rod two 3 to clean the materials with deeper blockage on the sieve mesh 15, and then the cleaning rod one 2 is used to clean the materials. The blocked materials are discharged from the discharge port 110. The finer gypsum powder enters the next layer of sieve mesh 15. The gypsum powder is divided into gypsum powders of different finenesses through multiple sieve meshes 15 to complete classification.

[0027] Combined with the attached Figure 1 , attached Figure 3 , attached Figure 4 As shown, a ring 6 is rotatably arranged on the sieve frame 14. The cleaning rod two 3 is arranged on the inner wall of the ring 6. One end of the cleaning rod two 3 extends to the center of the sieve mesh 15. The cleaning rod two 3 is attached to the lower surface of the sieve mesh 15. An L-shaped rod 61 is arranged on the inner wall of the ring 6. The cleaning rod one 2 is arranged at one end of the L-shaped rod 61. The cleaning rod one 2 is attached to the upper surface of the sieve mesh 15. Only the cleaning rod one 2 is arranged on the topmost ring 6, and only the cleaning rod two 3 is arranged on the lowermost ring 6. The cleaning rod two 3 is above the cleaning rod one 2.

[0028] Working principle: Since setting a rotating shaft on the sieve mesh 15 to drive the cleaning rod one 2 and the cleaning rod two 3 will reduce the area of the sieve mesh 15 and lower the screening and filtering efficiency, a ring 6 is arranged on the sieve frame 14. The rotation of the ring 6 drives the cleaning rod one 2 and the cleaning rod two 3 to clean the surface of the sieve mesh 15, and the cleaning rod one 2 and the cleaning rod two 3 can be driven to rotate without occupying the surface of the sieve mesh 15.

[0029] Combined with the attached Figure 1 , attached Figure 4 , attached Figure 9 As shown, the driving mechanism 5 includes a support plate 51 on the sieve frame 14. A motor 52 is arranged on the support plate 51. A rotating shaft 53 is arranged at the output end of the motor 52. A gear one 54 corresponding to the ring 6 is arranged on the rotating shaft 53. A gear two 55 meshing with the gear one 54 is arranged on the ring 6; An arc-shaped clamping plate 19 is arranged between two adjacent sieve frames 14. The arc-shaped clamping plate 19 is fastened by a toggle bolt.

[0030] Working principle: Since the circular ring 6 is rotatably arranged on the screen frame 14, in order to facilitate the disassembly of the circular ring 6 and the cleaning of the first cleaning rod 2 and the second cleaning rod 3, arc-shaped clamping plates 19 and toggle bolts are provided. When disassembly is required, the arc-shaped clamping plates 19 can be removed by loosening the toggle bolts, and then the screen frame 14 and the circular ring 6 can be taken out. Since the circular ring 6 needs to rotate, a second gear 55 is provided on the circular ring 6. By arranging a motor 52 on the screen frame 14, the motor 52 drives the rotating shaft 53 to rotate, the rotating shaft 53 drives the first gear 54 to rotate, and the first gear 54 drives the second gear 55 to rotate, thereby driving the first cleaning rod 2 and the second cleaning rod 3 on the circular ring 6.

[0031] Combined with the attached Figure 1 , attached Figure 2 , attached Figure 3 , attached Figure 4 , attached Figure 5 , attached Figure 6 , attached Figure 7 As shown in the figures, the screen 15 is slidably arranged up and down in the screen frame 14. An extension plate 16 is provided on the screen 15. An elastic piece 17 is provided on the bottom surface of the extension plate 16. An arc-shaped block 18 is provided at the end of the elastic piece 17. The arc-shaped block 18 abuts against the circular ring 6. The removing mechanism 4 includes a rotating ring 41 rotatably arranged in the screen frame 14. A plurality of sockets 42 are provided on the rotating ring 41. A first plug post 43 is movably inserted into the socket 42, and a first return spring 44 is provided between the first plug post 43 and the socket 42. One end of the first plug post 43 is provided with a first magnetic attraction block 45. One end of the first magnetic attraction block 45 is provided with an abutting block 46. Two inclined surfaces are provided at the end of the abutting block 46, so that the contact area between the abutting block 46 and the screen 15 is small. On the circular ring 6 below the rotating ring 41, two second magnetic attraction blocks 47 cooperating with the first magnetic attraction block 45 are provided. An adjusting mechanism 7 for adjusting the position of the abutting block 46 is provided in the screen frame 14. The circular ring 6 drives the second magnetic attraction block 47 to move in a circular motion. When the second magnetic attraction block 47 is located below the first magnetic attraction block 45, the second magnetic attraction block 47 attracts the first magnetic attraction block 45 and drives the first plug post 43 to move downward. The abutting block 46 impacts the screen 15 and makes the screen 15 move downward, so that the second cleaning rod 3 is inserted into the holes of the screen 15, and the blocked materials are located on the screen 15, and are cleaned and discharged by the first cleaning rod 2.

[0032] Working principle of the removal mechanism 4: For the materials stuck in a relatively deep position of the screen 15, it is very difficult to clean them directly through the second cleaning rod 3. In order to enable the second cleaning rod 3 to clean the materials in the relatively deep position of the screen 15, an extension plate 16 and an elastic piece 17 are provided. The screen 15 can slide up and down. By setting the first insertion post 43, the first reset spring 44, the first magnetic attraction block 45 and the second magnetic attraction block 47, when the second magnetic attraction block 47 is located below the first magnetic attraction block 45, it will cause the first magnetic attraction block 45 to move downward, thereby driving the abutting block 46 to impact the screen 15 to make the screen 15 move downward. Since the second cleaning rod 3 is in contact with the bottom surface of the screen 15, the downward movement of the screen 15 will cause the brush on the second cleaning rod 3 to enter the inside of the screen 15, so as to push out the deeper materials, and then cooperate with the first cleaning rod 2 to discharge them. In order to facilitate the cooperation with the second cleaning rod 3 to remove the materials, the first cleaning rod 2 is arranged near the second cleaning rod 3. In this way, after the second cleaning rod 3 pushes out the materials, the first cleaning rod 2 can timely discharge the pushed-out materials to prevent the materials from being stuck in the screen 15 again due to untimely cleaning; Specifically, the driving mechanism 5 drives the ring 6 to rotate. The ring 6 drives the first cleaning rod 2, the second cleaning rod 3 and the second magnetic attraction block 47 thereon to move along the circumference. When the second magnetic attraction block 47 is located below the first magnetic attraction block 45, the first magnetic attraction block 45 is attracted to move downward, and the first reset spring 44 is compressed. Since the screen 15 is slidably arranged in the screen frame 14, the screen 15 will be driven to move downward. When the screen 15 moves downward, the brush on the second cleaning rod 3 enters the holes of the screen 15, so as to push the materials blocked in the holes onto the screen 15. Then the ring 6 continues to rotate, and the brush disengages from the holes of the screen 15. When the second magnetic attraction block 47 moves away from the first magnetic attraction block 45, the first reset spring 44 drives the first insertion post 43 to move upward, and the elastic piece 17 drives the screen 15 to reset, completing the cleaning of a part of the screen 15. By setting the position of the abutting block 46, the cleaning of the blocked holes of the entire screen 15 can be realized.

[0033] Combined with the attached Figure 1 、attached Figure 2 、attached Figure 7 As shown in the figure, the adjusting mechanism 7 includes a fixing seat 71 on the rotating ring 41. An insertion post 72 is movably inserted into the fixing seat 71. A second reset spring 73 is arranged between the insertion post 72 and the bottom surface of the fixing seat 71. An fixing plate 74 is arranged on the insertion post 72. An extension post 75 is arranged on one side of the fixing plate 74. A guiding groove 76 for cooperating with the extension post 75 is arranged on the inner wall of the screen frame 14. A moving mechanism 8 for driving the extension post 75 to slide in the guiding groove 76 is arranged on the ring 6.

[0034] Working principle of the adjusting mechanism 7: Since a plurality of abutting blocks 46 are provided on the rotating ring 41, it is necessary for all the abutting blocks 46 to drive the screen 15 to move downward before changing positions. By providing a moving mechanism 8 on the ring 6, only after the ring 6 rotates one circle, the moving mechanism 8 will drive the extension column 75 to slide in the guiding groove 76, thereby changing the position of the abutting block 46, so as to ensure that the position cleared by the second cleaning rod 3 is different each time; Specifically, in the initial state, the moving mechanism 8 is away from the fixed plate 74, the driving mechanism 5 drives the ring 6 to rotate, and the ring 6 drives the moving mechanism 8 thereon to move. When the moving mechanism 8 on the ring 6 gradually approaches the fixed plate 74, that is, Figure 7 as shown in the figure, the ring 6 continues to drive the moving mechanism 8 to move, the moving mechanism 8 drives the fixed plate 74 to move, and the fixed plate 74 slides in the guiding groove 76 through the extension column 75, so as to change the position of the abutting block 46 after the ring 6 rotates one circle.

[0035] Combined with the attached Figure 1 、attached Figure 2 、attached Figure 8 shown, the guiding groove 76 includes an upper inclined groove 761, a horizontal groove 763 and a lower inclined groove 762 that are sequentially communicated, and a slant plate 764 is provided in the screen frame 14 above the guiding groove 76.

[0036] Working principle: In the initial state, the extension column 75 is located at the bottom end of the upper inclined groove 761. The moving mechanism 8 drives the extension column 75 to move on the upper inclined groove 761 and the horizontal groove 763, and the return spring two 73 drives the extension column 75 to move in the lower inclined groove. The inclined groove is provided to enable the extension column 75 to change the position of the abutting block 46 during the movement, and the slant plate 764 is provided to prevent powder from entering the guiding groove 76.

[0037] Combined with the attached Figure 1 、attached Figure 2 、attached Figure 7 shown, the moving mechanism 8 includes a vertical rod 81 provided on the L-shaped rod 61, one end of the fixed plate 74 is provided with a driving column 82, the vertical rod 81 is provided with a driving rod 83 that cooperates with the driving column 82, one end of the driving rod 83 is a slope, and the vertical rod 81 is provided with a push rod 84 that cooperates with the fixed plate 74; The rotation of the ring 6 drives the driving rod 83 to move in a circular motion. One end of the driving rod 83 is in contact with the driving column 82 through an inclined surface. As the driving rod 83 continues to move, since one end of the driving rod 83 is an inclined surface, which is a surface that rises from low to high with a gradually increasing height, it will force the driving column 82 to move on the inclined surface of the driving rod 83. The driving column 82 drives the fixed plate 74 to move upward. When the extension column 75 on one side of the fixed plate 74 is located in the horizontal groove 763, at this time, the driving rod 83 is located at the bottom surface of the driving column 82. The driving rod 83 continues to move and passes through the driving column 82. At this time, the push rod 84 comes into contact with the driving column 82, and the push rod 84 pushes the driving column 82 to move, thereby driving the fixed plate 74 located at the position of the horizontal groove 763 to slide.

[0038] Working principle of the moving mechanism 8: The rotation of the ring 6 drives the driving rod 83 on it to move in a circular motion. The inclined surface at the end of the driving rod 83 is in contact with the driving column 82. At this time, the bottom of the inclined surface is in contact with the driving column 82. Only when the driving column 82 is located at the upper end of the driving rod 83 can the driving rod 83 continue to move in a circular motion. Thus, the driving rod 83 drives the driving column 82 to move upward along the circumference. The driving column 82 drives the fixed plate 74 to move upward, and the second reset spring 73 is compressed. The extension column 75 slides in the upper inclined groove 761. When it slides onto the horizontal groove 763, the top surface of the driving rod 83 is in contact with the bottom surface of the driving column 82. Then the ring 6 continues to drive the driving rod 83 to move, and the driving rod 83 disengages from the driving column 82. Since the fixed plate 74 rises, the push rod 84 comes into contact with the fixed plate 74 and drives the fixed plate 74 to move. When the extension column 75 is located in the lower inclined groove 762, the second reset spring 73 pushes the second insertion column 72 downward, so that the extension column 75 is located at the end of the lower inclined groove 762. At this time, the change in the position of the abutting block 46 is completed.

[0039] In specific use, first place the sieve frame 14 on the sieve base 12 and fix it with the arc-shaped clamping plate 19 and the toggle bolt. Then place the ring 6. Only the second cleaning rod 3 is provided on this ring 6, and the sieve mesh 15 is not placed on this layer of sieve frame 14. Then when placing the next layer of sieve frame 14 on the ring 6, the sieve mesh 15 needs to be placed in the sieve frame 14 first, then place the ring 6, and then place another layer of sieve frame 14 with the sieve mesh 15 on the ring 6. Ensure that the discharge ports 110 are not in the same position when installing the sieve frame 14. When installing the ring 6, ensure that the brush of the first cleaning rod 2 faces downward and the brush of the second cleaning rod 3 faces upward. Only the first cleaning rod 2 is provided on the topmost ring 6, and then place the material cover 111, and then perform the filtration and screening of the gypsum crystals.

[0040] The above describes the present invention and its implementation manners. Such description is not restrictive. What is shown in the drawings is only one of the implementation manners of the present invention, and the actual structure is not limited thereto. In summary, if those of ordinary skill in the art are inspired by it and, without departing from the gist of the present invention, design similar structural manners and embodiments to this technical solution without creative efforts, they shall fall within the protection scope of the present invention.

Claims

1. A gypsum crystal filtering device, comprising a base (1). A plurality of springs (11) are provided on the base (1). A sieve base (12) is provided on the springs (11). A detachable sieve frame (14) is provided on the sieve base (12). A detachable sieve mesh (15) is provided in the sieve frame (14). It is characterized in that: A cleaning rod one (2) and a cleaning rod two (3) are respectively provided above and below the sieve mesh (15) in the sieve frame (14). The cleaning rod one (2) makes a circular motion to clean the surface of the sieve mesh (15). A removing mechanism (4) for removing the materials blocking the sieve mesh (15) is provided on the sieve frame (14) in cooperation with the cleaning rod two (3). A driving mechanism (5) for driving the cleaning rod one (2) and the cleaning rod two (3) to make a circular motion is provided on the sieve frame (14). The cleaning rod one (2) cleans the materials with not deep blockage on the surface of the sieve mesh (15). The removing mechanism (4) cooperates with the cleaning rod two (3) to clean the materials with deeper blockage. The driving mechanism (5) drives the cleaning rod one (2) and the cleaning rod two (3) to move synchronously.

2. The gypsum crystal filtering device according to claim 1, characterized in that: A ring (6) is rotatably provided on the sieve frame (14). The cleaning rod two (3) is provided on the inner wall of the ring (6). One end of the cleaning rod two (3) extends to the center of the sieve mesh (15). The cleaning rod two (3) is in contact with the lower surface of the sieve mesh (15). An L-shaped rod (61) is provided on the inner wall of the ring (6). The cleaning rod one (2) is provided at one end of the L-shaped rod (61). The cleaning rod one (2) is in contact with the upper surface of the sieve mesh (15). Only the cleaning rod one (2) is provided on the uppermost ring (6). Only the cleaning rod two (3) is provided on the lowermost ring (6). The cleaning rod two (3) is above the cleaning rod one (2).

3. The gypsum crystal filtering device according to claim 2, wherein: The sieve mesh (15) is slidably arranged up and down in the sieve frame (14). An extension plate (16) is provided on the sieve mesh (15). An elastic piece (17) is provided on the bottom surface of the extension plate (16). An arc-shaped block (18) is provided at the end of the elastic piece (17). The arc-shaped block (18) abuts against the ring (6).

4. The gypsum crystal filtering device according to claim 3, characterized in that: The removing mechanism (4) includes a rotating ring (41) rotatably provided in the sieve frame (14). A plurality of sockets (42) are provided on the rotating ring (41). A first plug (43) is movably inserted into the socket (42), and a first return spring (44) is provided between the first plug (43) and the socket (42). One end of the first plug (43) is provided with a first magnetic attraction block (45). One end of the first magnetic attraction block (45) is provided with an abutting block (46). A second magnetic attraction block (47) cooperating with the first magnetic attraction block (45) is provided on the ring (6) below the rotating ring (41). An adjusting mechanism (7) for adjusting the position of the abutting block (46) is provided in the sieve frame (14). The circular ring (6) drives the second magnetic attraction block (47) to move in a circular motion. When the second magnetic attraction block (47) is located below the first magnetic attraction block (45), the second magnetic attraction block (47) attracts the first magnetic attraction block (45) and drives the first insertion post (43) to move downward. The abutting block (46) impacts the screen mesh (15) and causes the screen mesh (15) to move downward, so that the second cleaning rod (3) is inserted into the holes of the screen mesh (15), and the blocked material is located on the screen mesh (15), and is cleaned and discharged by the first cleaning rod (2).

5. A gypsum crystal filtration device according to claim 4, characterized in that: The adjusting mechanism (7) includes a fixed seat (71) on the rotating ring (41). A second insertion post (72) is movably inserted into the fixed seat (71). A second reset spring (73) is provided between the second insertion post (72) and the bottom surface of the fixed seat (71). A fixing plate (74) is provided on the second insertion post (72). An extension post (75) is provided on one side of the fixing plate (74). A guiding groove (76) matching with the extension post (75) is provided on the inner wall of the screen frame (14). A moving mechanism (8) for driving the extension post (75) to slide in the guiding groove (76) is provided on the circular ring (6).

6. The gypsum crystal filtering device according to claim 5, wherein: The guiding groove (76) includes an upper inclined groove (761), a horizontal groove (763) and a lower inclined groove (762) which are connected in sequence.

7. The gypsum crystal filtering device according to claim 5, wherein: The moving mechanism (8) includes a vertical rod (81) provided on the L-shaped rod (61). A driving post (82) is provided at one end of the fixing plate (74). A driving rod (83) matching with the driving post (82) is provided on the vertical rod (81). One end of the driving rod (83) is a slope. A push rod (84) matching with the fixing plate (74) is provided on the vertical rod (81). The rotation of the circular ring (6) drives the driving rod (83) to move in a circular motion. One end slope of the driving rod (83) abuts against the driving post (82). The continuous movement of the driving rod (83) drives the driving post (82) to move upward. The driving post (82) drives the fixing plate (74) to move upward. The push rod (84) drives the fixing plate (74) after upward movement to slide.

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