A square gyratory screen anti-clogging mesh structure

Abstract

This utility model discloses an anti-clogging mesh structure for a square gyratory screen, including a support frame. Four universal joints are fixedly connected to the support frame. A square screen body is fixedly connected between the four universal joints. The square screen body is fixedly connected to equally spaced fixed rods. A screen plate is slidably connected between the equally spaced fixed rods. A fixed plate is fixedly connected to each fixed rod. A spring is fixed between the fixed plate and the screen plate. A baffle is fixedly connected to the left side of the screen plate. The square screen body is rotatably connected to a rotating shaft. Two cams are fixedly connected to the rotating shaft. The cams abut against the lower side of the screen plate. A drive motor is fixedly connected to the square screen body. The cam mechanism drives the screen plate to vibrate up and down at high frequency along the fixed rods. Combined with spring reset, this powerfully shakes off and bounces away material particles stuck at the edge or shallow layer of the screen holes, achieving periodic mechanical cleaning of the screen plate itself. This significantly reduces the probability of the screen holes being blocked by materials close to the hole size, maintaining screening efficiency.

Description

Technical Field

[0001] This utility model relates to the field of square gyratory screen technology, and more specifically, it relates to an anti-clogging mesh structure for a square gyratory screen. Background Technology

[0002] Square gyratory screens achieve high-efficiency screening through a unique elliptical composite motion trajectory, and are widely used in industries such as chemical, metallurgy, mining, feed, and food. Their design is intended to meet the demands of high-volume, high-precision screening. During operation, the screen body traces an elliptical trajectory forward and to the left and right, forcing the material to adhere tightly to the screen surface; simultaneously, the material itself undergoes an elliptical curve motion on the screen mesh, greatly increasing the screening stroke time and significantly improving screening efficiency.

[0003] However, it still has the following drawbacks in practical use:

[0004] 1. Because the material moves along an elliptical trajectory on the screen during operation, particles with a size very close to the screen's pore size are easily embedded in the pores. This jamming phenomenon mainly stems from the centrifugal force exerted on the material and the friction between the material and the screen pore walls, causing some pores to become stubbornly blocked, significantly reducing the effective filtration area and directly affecting screening accuracy and efficiency.

[0005] 2. When the screen of the gyratory screen becomes clogged due to material jamming, the equipment must be stopped, and the screen must be removed manually through a tedious disassembly process. This process is not only time-consuming and labor-intensive, leading to prolonged equipment downtime, but also prevents the entire machine from operating continuously, severely reducing the production efficiency and overall processing capacity of the square gyratory screen.

[0006] 3. Conventional cleaning methods can usually only remove loose, attached material from the screen surface, but often fail to completely remove particles that are firmly stuck inside the screen holes. These residual blockages reduce the actual aperture of the screen holes or even completely block them, preventing the screen from returning to a fully transparent state. This inevitably hinders the normal passage and effective screening of subsequent materials, affecting the screening effect.

[0007] Therefore, there is an urgent need for an anti-clogging mesh structure for square gyratory screens. Utility Model Content

[0008] (a) Technical problems to be solved

[0009] In view of the problems existing in the prior art, this utility model provides an anti-clogging mesh structure for a square gyratory screen to solve the technical problems mentioned in the background art.

[0010] (II) Technical Solution

[0011] To achieve the above objectives, this utility model provides the following technical solution: an anti-clogging mesh structure for a square gyratory screen, comprising a support frame, four universal connecting rods fixedly connected to the support frame, a square screen body fixedly connected between the four universal connecting rods, a fixed rod evenly spaced fixedly connected to the square screen body, a screen plate slidably connected between the evenly spaced fixed rods, a fixed disc fixedly connected to the fixed rods, a spring fixedly connected between the fixed disc and the screen plate, a baffle fixedly connected to the left side of the screen plate, a rotating shaft rotatably connected to the square screen body, two cams fixedly connected to the rotating shaft, the cams abutting against the lower side of the screen plate, a drive motor fixedly connected to the square screen body, the output shaft of the drive motor fixedly connected to the rotating shaft, and a backlash structure provided in the square screen body.

[0012] The present invention is further configured such that a second screen plate is fixedly connected inside the square screen body, the second screen plate being located below the first screen plate, and a discharge plate is fixedly connected inside the square screen body, the discharge plate being located below the second screen plate.

[0013] The present invention is further configured such that a vibration motor is fixedly connected to the front side of the square screen body.

[0014] The present invention is further configured such that a feed pipe is provided on the upper part of the square screen body, two observation ports are provided on the upper side of the square screen, a dust cover is fixedly connected to the upper side of the square screen body, and multiple discharge pipes are fixedly connected to the left side of the square screen body.

[0015] The present invention is further configured such that the backflushing structure includes multiple rotating tubes, which are rotatably connected to the square screen body. The lower side of each rotating tube is provided with an elongated through hole, and a gear is fixedly connected to each rotating tube.

[0016] The present invention is further configured such that a plurality of fixed seats are fixedly connected to the rear side of the square screen body, a sliding rod is slidably connected between the plurality of fixed seats, a plurality of racks are fixedly connected to the sliding rod, the gears mesh with adjacent racks, an electric push rod is fixedly connected to the rear side of the square screen body, and the telescopic end of the electric push rod is fixedly connected to the sliding rod.

[0017] The present invention is further configured such that a fixed pipe is fixedly connected to the rear side of the square screen body, the rotating pipe is rotatably connected to the fixed pipe, and the fixed pipe is provided with an air injection port.

[0018] The present invention is further configured such that a plurality of arc-shaped plates are fixedly connected inside the square screen body, and the arc-shaped plates are slidably engaged with the adjacent rotating tube.

[0019] (III) Beneficial Effects

[0020] Compared with the prior art, this utility model provides an anti-clogging mesh structure for a square gyratory screen, which has the following beneficial effects:

[0021] 1. This utility model uses a cam mechanism to drive the screen plate to vibrate up and down at high frequency along a fixed rod. With the help of a spring reset, it can powerfully shake off and bounce away material particles stuck on the edge or shallow layer of the screen hole, realizing the periodic mechanical cleaning of the screen plate itself, greatly reducing the probability of the screen hole being blocked by material close to the hole size, and maintaining screening efficiency.

[0022] 2. This utility model introduces a high-pressure gas backflushing structure, where gas is precisely sprayed onto the bottom surface of the screen plate through a rotatable rotating tube with elongated holes. Combined with the vibration of the screen plate, the gas can penetrate deep into the screen holes, blowing out stubborn materials that are difficult to completely remove by mechanical vibration and are deeply embedded, achieving deeper and more thorough unblocking of the screen holes and effectively solving the problem of residual blockage.

[0023] 3. This utility model uses an electric push rod to drive a rack and pinion mechanism, causing the rotating tube to oscillate back and forth during air jetting. This greatly expands the spray coverage of the high-pressure gas, cleaning the entire screen surface without any blind spots. The entire unclogging process is highly automated and integrated, eliminating the need for manual disassembly and assembly of the screen, significantly reducing downtime for maintenance, and improving the equipment's continuous operation capability and overall efficiency. Attached Figure Description

[0024] Figure 1 This is a front view of the anti-clogging mesh structure for a square gyratory screen according to the present invention.

[0025] Figure 2 This is a rear view structural diagram of the square screen body in this utility model;

[0026] Figure 3 This is a cross-sectional view of the square screen body in this utility model.

[0027] Figure 4 This is a schematic diagram of the structure of the fixing rod and the sieve plate in this utility model;

[0028] Figure 5 This is a schematic diagram of the structure of the fixed disc and the spring in this utility model;

[0029] Figure 6 This is a schematic diagram of the sliding rod and electric push rod in this utility model;

[0030] Figure 7 This is a schematic diagram of the rotating tube and the arc-shaped plate in this utility model.

[0031] In the diagram: 1. Support frame; 2. Universal connecting rod; 3. Square screen body; 4. Fixing rod; 5. Screen plate one; 6. Fixing plate; 7. Spring; 8. Baffle; 9. Rotating shaft; 10. Cam; 11. Drive motor; 12. Screen plate two; 13. Discharge plate; 14. Vibrating motor; 15. Feed pipe; 16. Observation port; 17. Dust cover; 18. Discharge pipe; 19. Rotating pipe; 20. Gear; 21. Fixing seat; 22. Sliding rod; 23. Rack; 24. Electric push rod; 25. Fixing pipe; 26. Arc plate. Detailed Implementation

[0032] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0033] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0034] In this utility model, unless otherwise stated, the orientations used, such as "up" and "down", usually refer to the direction shown in the accompanying drawings, or to the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "left" and "right" usually refer to the left and right shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not used to limit this utility model.

[0035] Please see Figures 1-7 A square gyratory screen anti-clogging mesh structure includes a support 1, four universal connecting rods 2 fixed to the support 1, a square screen body 3 fixed between the four universal connecting rods 2, and equally spaced fixing rods 4 fixed to the square screen body 3. A screen plate 5 is slidably connected between the equally spaced fixing rods 4, a fixing plate 6 fixed to the fixing rods 4, and a spring 7 fixed between the fixing plate 6 and the screen plate 5. A baffle 8 is fixed to the left side of the screen plate 5. A rotating shaft 9 is rotatably connected to the square screen body 3, and two cams 10 are fixed to the rotating shaft 9. The cams 10 abut against the lower side of the screen plate 5. A drive motor 11 is provided, and the output shaft of the drive motor 11 is fixedly connected to the rotating shaft 9. The square screen body 3 is provided with a back-jet structure. A second screen plate 12 is fixedly connected inside the square screen body 3. The second screen plate 12 is located below the first screen plate 5. A discharge plate 13 is fixedly connected inside the square screen body 3. The discharge plate 13 is located below the second screen plate 12. A vibration motor 14 is fixedly connected to the front side of the square screen body 3. A feed pipe 15 is provided on the upper part of the square screen body 3. Two observation ports 16 are provided on the upper side of the square screen. A dust cover 17 is fixedly connected to the upper side of the square screen body 3. Multiple discharge pipes 18 are fixedly connected to the left side of the square screen body 3.

[0036] Please see Figure 2, Figure 3 , Figure 6 and Figure 7 The backwash structure includes multiple rotating tubes 19, which are rotatably connected to the square screen body 3. A long through-hole is provided on the lower side of each rotating tube 19, and a gear 20 is fixedly connected to each rotating tube 19. Multiple fixed seats 21 are fixedly connected to the rear side of the square screen body 3, and sliding rods 22 are slidably connected between the multiple fixed seats 21. Multiple racks 23 are fixedly connected to the sliding rods 22, and the gear 20 meshes with adjacent racks 23. An electric push rod 24 is fixedly connected to the rear side of the square screen body 3, and the telescopic end of the electric push rod 24 is fixedly connected to the sliding rod 22. A fixed tube 25 is fixedly connected to the rear side of the square screen body 3, and the rotating tubes 19 are rotatably connected to the fixed tube 25. The fixed tube 25 is provided with an air injection port. Multiple arc-shaped plates 26 are fixedly connected inside the square screen body 3, and the arc-shaped plates 26 are slidably engaged with adjacent rotating tubes 19.

[0037] Working principle: When the vibration motor 14 is started, the vibration generated by the vibration motor 14 causes the square screen body 3 to rotate on the four universal connecting rods 2, and the material is discharged from the feed pipe 15. The material is screened by the screen plate 1 5 and the screen plate 2 12 and discharged from the discharge pipe 18. After a period of use, the drive motor 11 is started. The drive motor 11 drives the rotating shaft 9 to rotate axially. The rotating shaft 9 drives the protrusions of the two cams 10 to squeeze the screen plate 1 5. The screen plate 1 5 moves upward along the multiple fixed rods 4. The spring 7 is squeezed. As the protrusions of the cams 10 lose contact with the screen plate, the screen plate 1 5 is reset under the elastic force of the spring 7. The screen plate vibrates up and down, clearing the material blocked in the filter holes of the screen plate 1 5, thereby unblocking the filter holes of the screen plate 1 5.

[0038] After starting the drive motor 11, high-pressure gas is supplied to the air inlet of the fixed pipe 25. At the same time, the electric push rod 24 is started. The telescopic end of the electric push rod 24 drives the sliding rod 22 to move. The sliding rod 22 drives the rack 23 to move synchronously. The rack 23 drives the adjacent gear 20 to rotate. The gear 20 drives the rotating pipe 19 to rotate. The arc plate 26 releases the seal on the long through hole of the adjacent rotating pipe 19. Then, the high-pressure gas is ejected from the long through hole of the rotating pipe 19. The ejected high-pressure air backflushes the screen plate 5, further cleaning the filter holes of the screen plate 5 and reducing the probability of clogging of the screen plate 5.

[0039] The sliding rod 22 is moved back and forth by the telescopic end of the electric push rod 24, causing the rotating tube 19 to swing back and forth, thereby increasing the blowing area of ​​high-pressure air and improving the cleaning effect on blockages. After the cleaning is completed, the drive motor 11 is turned off and the telescopic end of the electric push rod 24 is reset to stop the supply of high-pressure air to the fixed tube 25.

[0040] Of all the solutions mentioned above, those involving the connection between two components can be selected according to the actual situation, such as welding, bolt and nut connection, bolt or screw connection, or other known connection methods, which will not be elaborated here. For all the fixed connections mentioned above, welding is preferred. Although embodiments of this utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this utility model. The scope of this utility model is defined by the appended claims and their equivalents.

Claims

1. A square gyratory screen anti-clogging mesh structure, comprising a support frame (1), characterized in that: The bracket (1) is fixedly connected to four universal connecting rods (2), and a square screen body (3) is fixedly connected between the four universal connecting rods (2). The square screen body (3) is fixedly connected to fixed rods (4) with equal spacing. A screen plate (5) is slidably connected between the fixed rods (4) with equal spacing. A fixed plate (6) is fixedly connected to the fixed rods (4). A spring (7) is fixedly connected between the fixed plate (6) and the screen plate (5). A baffle (8) is fixedly connected to the left side of the screen plate (5). The square screen body (3) is rotatably connected to a rotating shaft (9). Two cams (10) are fixedly connected to the rotating shaft (9). The cams (10) abut against the lower side of the screen plate (5). A drive motor (11) is fixedly connected to the square screen body (3). The output shaft of the drive motor (11) is fixedly connected to the rotating shaft (9). The square screen body (3) is provided with a backlash structure.

2. The anti-clogging mesh structure for a square gyratory screen according to claim 1, characterized in that: The square screen body (3) is fixedly connected to a screen plate two (12), which is located below the screen plate one (5). The square screen body (3) is fixedly connected to a discharge plate (13), which is located below the screen plate two (12).

3. The anti-clogging mesh structure for a square gyratory screen according to claim 2, characterized in that: A vibrating motor (14) is fixed to the front side of the square screen body (3).

4. The anti-clogging mesh structure for a square gyratory screen according to claim 1, characterized in that: The upper part of the square screen body (3) is provided with a feed pipe (15), the upper side of the square screen is provided with two observation ports (16), the upper side of the square screen body (3) is fixed with a dust cover (17), and the left side of the square screen body (3) is fixed with multiple discharge pipes (18).

5. The anti-clogging mesh structure for a square gyratory screen according to claim 1, characterized in that: The backwash structure includes multiple rotating tubes (19), which are rotatably connected to the square screen body (3). The lower side of the rotating tube (19) is provided with a long through hole, and a gear (20) is fixedly connected to the rotating tube (19).

6. The anti-clogging mesh structure for a square gyratory screen according to claim 5, characterized in that: The square screen body (3) is fixedly connected to a plurality of fixed seats (21) on the rear side. A sliding rod (22) is slidably connected between the plurality of fixed seats (21). A plurality of racks (23) are fixedly connected to the sliding rods (22). The gears (20) mesh with the adjacent racks (23). An electric push rod (24) is fixedly connected to the rear side of the square screen body (3). The telescopic end of the electric push rod (24) is fixedly connected to the sliding rod (22).

7. The anti-clogging mesh structure for a square gyratory screen according to claim 6, characterized in that: A fixed pipe (25) is fixedly connected to the rear side of the square screen body (3), and the rotating pipe (19) is rotatably connected to the fixed pipe (25). The fixed pipe (25) is provided with an air injection port.

8. The anti-clogging mesh structure for a square gyratory screen according to claim 5, characterized in that: The square screen body (3) has multiple arc-shaped plates (26) fixedly connected inside, and the arc-shaped plates (26) slide in cooperation with the adjacent rotating tube (19).

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