An automatic vibrating screening device for high-efficiency wet grain screening

Abstract

The present invention relates to the technical field of moist grain screening, specifically to an automatic vibrating screening device for high-efficiency moist grain screening, including a moving component for cleaning the screen, the moving component including a moving track installed on the rotary vibrating screen, a slide sliding on the moving track, a second reciprocating screw rotating on the slide, and a cleaning brush for cleaning the screen installed at the bottom end of the second reciprocating screw; while the rotary vibrating screen screens the moist grain, the slide realizes the horizontal uniform motion of the cleaning brush on the screen surface on the moving track. The purpose of the present invention is to provide an automatic vibrating screening device for high-efficiency moist grain screening, when the rotary vibrating screen is working, the screen surface makes horizontal circular motion and has relative motion with the cleaning brush, which can realize the rotary cleaning function, clean up the rice hair stuck on the screen, thereby increasing the passing rate of moist grain on the screen surface; and avoid the screen holes of the screen being blocked to a certain extent, which will seriously affect the screening efficiency of the moist grain.

Description

Technical Field

[0001] The invention relates to the technical field of wet grain screening, in particular to an automatic vibrating screening device for high-efficiency wet grain screening. Background Art

[0002] When using a rotary vibrating screen to screen rice hairs, some of the rice hairs will stick to the screen. As a result, during the screening of damp grains, the rice hairs will block the sieve holes of the rotary vibrating screen, resulting in poor passage of grains through the sieve holes. When the sieve holes of the screen are blocked to a certain extent, the screening efficiency of damp grains will be seriously affected. Summary of the Invention

[0003] The purpose of the present invention is to provide an automatic vibrating screening device for high-efficiency wet grain screening. When the rotary vibrating screen is working, the screen surface makes horizontal circular motion and has relative motion with the cleaning brush, which can realize the rotary cleaning function, clean up the rice hairs stuck on the screen, thereby increasing the passing rate of wet grain on the screen surface; and avoid the screen holes of the screen being blocked to a certain extent, which will seriously affect the screening efficiency of wet grain.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an automatic vibrating screen device for high-efficiency wet grain screening, comprising a moving assembly for cleaning the screen, the moving assembly comprising a moving track installed on the rotary vibrating screen, a slide sliding on the moving track, a second reciprocating screw rod rotating on the slide, and a cleaning brush for cleaning the screen screen installed at the bottom end of the second reciprocating screw rod; while the rotary vibrating screen screens the wet grain, the slide realizes the horizontal uniform movement of the cleaning brush on the screen surface on the moving track; a cleaning mechanism is provided on the slide to assist the cleaning brush in cleaning the screen, the cleaning mechanism comprises a bracket that moves synchronously with the slide, the second reciprocating screw rod is provided with a first sliding rod that moves along the second reciprocating screw rod when the second reciprocating screw rod rotates, both ends of the first sliding rod pass through the bracket and are provided with extrusion rods, side rods are provided on the bracket, and the bottom ends of the side rods are fixed A first tension spring is provided, one end of the first tension spring is fixed with an arc-shaped knocking plate that contacts and squeezes the extrusion rod. During the rotation of the second reciprocating screw rod, the first sliding rod reciprocates along the second reciprocating screw rod. At the same time, the first sliding rod drives the extrusion rod to move up and down, and in the process of the extrusion rod moving up and down, it contacts and squeezes the arc surface of the arc knocking plate, and causes the arc knocking plate to deform through the first tension spring. When the extrusion rod cancels the extrusion of the arc surface of the arc knocking plate, the arc knocking plate is reset by the first tension spring and contacts and knocks the screen by inertia; the lower part of the sliding seat assists the arc knocking plate in knocking the screen. The switching mechanism includes a second sliding rod that moves along the second reciprocating screw rod when the second reciprocating screw rod rotates, and driving rods are movably installed at both ends of the second sliding rod, and the driving rod is connected with the side rod.

[0005] Preferably, the movable track is installed above the rotary vibrating screen, and a pulley that moves on the movable track is installed above the slide.

[0006] Preferably, a motor is fixed to one end of the movable track, a first reciprocating screw is installed at the output end of the motor, and the bearing seat on the slide is connected to the first reciprocating screw via a ball nut pair.

[0007] Preferably, the second reciprocating screw and the cleaning brush are of detachable design, a first bevel gear is mounted on the first reciprocating screw, and a second bevel gear meshing with the first bevel gear is provided on the second reciprocating screw.

[0008] Preferably, two threads are provided on the second reciprocating screw rod, and one thread on the second reciprocating screw rod is connected to the bearing seat on the first sliding rod through a ball nut pair.

[0009] Preferably, another thread on the second reciprocating screw is connected to the bearing seat on the second sliding rod through a ball nut pair.

[0010] Preferably, a first limiting groove for sliding of the first sliding rod is provided on the bracket.

[0011] Preferably, a third limiting groove for driving the rod to slide is provided on the side rod.

[0012] Preferably, a second tension spring is fixed on the second sliding rod, a penetrating rod passes through the second sliding rod, and the second tension spring is sleeved on the outside of the penetrating rod, and one end of the driving rod is fixedly connected to the penetrating rod.

[0013] Preferably, a second limiting groove in an inverted trapezoidal shape is provided on the bracket, and a slider that slides along the second limiting groove is installed at one end of the through rod.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] The second reciprocating screw rod drives the cleaning brush to rotate, thereby the cleaning brush rotates while moving horizontally at a uniform speed on the screen surface, thereby cleaning the screen mesh.

[0016] 2. The present invention, during the rotation of the second reciprocating screw, a thread on the second reciprocating screw is connected to the bearing seat on the first sliding rod through a ball nut pair. Therefore, during the rotation of the second reciprocating screw, the first sliding rod moves along the second reciprocating screw. During the movement of the first sliding rod, the first sliding rod drives the extrusion rod to move up and down. During the up and down movement of the extrusion rod, the arc surface of the arc knocking plate is squeezed. When the extrusion rod squeezes the arc surface of the arc knocking plate, the arc knocking plate is forced to flip over by the first tension spring. When the extrusion with the arc surface of the arc knocking plate is cancelled during the movement of the extrusion rod, the arc knocking plate is reset by the first tension spring. During the resetting process, the arc knocking plate will knock on the screen through inertia, thereby cooperating with the cleaning brush to further clean the rice hair on the screen, thereby avoiding the deterioration of its passability and affecting the screening efficiency.

[0017] 3. In the process of the slider moving along the second limiting groove, the slider groove drives the through rod to move on the second sliding rod through the elastic force of the second tension spring. When the through rod moves, it drives the driving rod to move. Since the driving rod is connected to the side rod through, Figure 7 As shown, when the driving rod moves, the side rod is driven to move, and the side rod drives the arc-shaped knocking plate at one end to move, thereby changing the position of the arc-shaped knocking plate knocking the screen; thereby, while the arc-shaped knocking plate knocks the screen, the position of the knocking screen can be continuously changed, further improving the efficiency and effectiveness of cleaning the screen. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0019] Figure 2 This is the second schematic diagram of the overall structure of the present invention;

[0020] Figure 3 This is a partial structural diagram of the present invention;

[0021] Figure 4 This is the second partial structural diagram of the present invention;

[0022] Figure 5 The third schematic diagram of the partial structure of the present invention;

[0023] Figure 6 The fourth schematic diagram of the partial structure of the present invention;

[0024] Figure 7 It is a partial structural diagram of the connection between the cleaning mechanism and the transposition mechanism of the present invention.

[0025] In the figure: 1. Moving assembly; 11. Moving track; 12. Motor; 13. First reciprocating screw; 14. Pulley; 15. Slide; 16. Second reciprocating screw; 17. Cleaning brush; 18. First bevel gear; 19. Second bevel gear; 2. Cleaning mechanism; 21. Bracket; 22. First sliding rod; 23. Extrusion rod; 25. Side rod; 26. First limiting groove; 27. Arc-shaped knocking plate; 28. First tension spring; 3. Shifting mechanism; 31. Second limiting groove; 32. Second sliding rod; 33. Driving rod; 34. Third limiting groove; 35. Second tension spring; 36. Through rod; 37. Slider. DETAILED DESCRIPTION

[0026] To make the purpose, technical solutions and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0027] The present invention provides an automatic vibrating screen device for high-efficiency wet grain screening, comprising a moving assembly 1 for cleaning the screen, the moving assembly 1 comprising a moving track 11 mounted on a rotary vibrating screen, a slide 15 sliding on the moving track 11, a second reciprocating screw 16 rotating on the slide 15, a cleaning brush 17 for cleaning the screen mounted at the bottom end of the second reciprocating screw 16; while the rotary vibrating screen screens the wet grain, the slide 15 on the moving track 11 enables the cleaning brush 17 to move horizontally at a uniform speed on the screen surface; the moving track 11 is mounted above the rotary vibrating screen, a pulley 14 moving on the moving track 11 is mounted above the slide 15, a motor 12 is fixed at one end of the moving track 11, and the motor 12 is fixed at one end of the moving track 11. The output end of the machine 12 is equipped with a first reciprocating screw 13, the bearing seat on the slide 15 is connected to the first reciprocating screw 13 through a ball nut pair, the second reciprocating screw 16 and the cleaning brush 17 are of a detachable design, the first reciprocating screw 13 is equipped with a first bevel gear 18, the second reciprocating screw 16 is provided with a second bevel gear 19 meshing with the first bevel gear 18, the second reciprocating screw 16 is provided with two threads, one thread on the second reciprocating screw 16 is connected to the bearing seat on the first sliding rod 22 through a ball nut pair, and the other thread on the second reciprocating screw 16 is connected to the bearing seat on the second sliding rod 32 through a ball nut pair;

[0028] See Figures 1 to 5As shown, during the process of the rotary vibrating screen screening the moist grain, the motor 12 is started, and the output end of the bracket 21 drives the first reciprocating screw 13 to rotate. Since the bearing seat on the slide 15 is connected to the first reciprocating screw 13 through a ball nut pair, the slide 15 moves along the first reciprocating screw 13 during the rotation of the first reciprocating screw 13. At the same time, the slide 15 can move along the moving track 11 using the pulley 14, thereby further increasing the stability of the movement of the slide 15; at the same time, when the slide 15 moves, the slide 15 drives the second reciprocating screw 16 to move, and the second reciprocating screw 16 drives the cleaning brush 17 to move above the screen, so that the cleaning brush 17 moves horizontally at a uniform speed on the screen surface to clean the screen; at the same time, When the reciprocating screw 13 rotates, the first reciprocating screw 13 drives the first bevel gear 18 to rotate, the first bevel gear 18 drives the second bevel gear 19 to rotate, the second bevel gear 19 drives the second reciprocating screw 16 to rotate, and the second reciprocating screw 16 drives the cleaning brush 17 to rotate, thereby rotating while the cleaning brush 17 moves horizontally at a uniform speed on the screen surface, further improving the cleaning effect of the cleaning brush 17 on the screen mesh; when the rotary vibrating screen is working, the screen surface makes a horizontal circular motion and there is a relative motion between the cleaning brush 17 and the screen mesh, which can realize the rotary cleaning function and clean the rice hair stuck on the screen mesh, thereby increasing the passing rate of the moist grain on the screen surface; and avoiding the screen mesh holes being blocked to a certain extent, which will seriously affect the screening efficiency of the moist grain;

[0029] The slide 15 is provided with an auxiliary cleaning brush 17 to clean the screen cleaning mechanism 2, the cleaning mechanism 2 includes a bracket 21 that moves synchronously with the slide 15, and a first sliding rod 22 that moves along the second reciprocating screw 16 when the second reciprocating screw 16 rotates. Both ends of the first sliding rod 22 pass through the bracket 21 and are provided with an extrusion rod 23. A side rod 25 is provided on the bracket 21, and a first tension spring 28 is fixed to the bottom end of the side rod 25. One end of the first tension spring 28 is fixed with an arc-shaped knocking plate 27 that contacts and squeezes the extrusion rod 23. During the rotation of the second reciprocating screw 16, the first sliding rod 22 moves back and forth along the second reciprocating screw rod 16, and at the same time, the first sliding rod 22 drives the extrusion rod 23 to move up and down, and in the process of the extrusion rod 23 moving up and down, it contacts and squeezes the arc surface of the arc-shaped knocking plate 27, and causes the arc-shaped knocking plate 27 to be deformed by the first tension spring 28. When the extrusion rod 23 cancels the extrusion of the arc surface of the arc-shaped knocking plate 27, the arc-shaped knocking plate 27 is reset by the first tension spring 28 and contacts and knocks the screen by inertia; the bracket 21 is provided with a first limiting groove 26 for the sliding of the first sliding rod 22, and the side rod 25 is provided with a third limiting groove 34 for the sliding of the driving rod 33;

[0030] See Figures 3 to 7As shown, during the rotation of the second reciprocating screw rod 16, since a thread on the second reciprocating screw rod 16 is also connected to the bearing seat on the first sliding rod 22 through a ball nut pair, the first sliding rod 22 moves along the second reciprocating screw rod 16 during the rotation of the second reciprocating screw rod 16. During the movement of the first sliding rod 22, the first sliding rod 22 drives the extrusion rod 23 to move up and down. During the up and down movement of the extrusion rod 23, the arc surface of the arc knocking plate 27 is squeezed. When the extrusion rod 23 squeezes the arc surface of the arc knocking plate 27, the arc knocking plate 27 is forced to flip over by the first tension spring 28. When the extrusion rod 23 is moved and the extrusion with the arc surface of the arc knocking plate 27 is cancelled, the arc knocking plate 27 is reset by the first tension spring 28. During the resetting process, the arc knocking plate 27 will knock on the screen through inertia, thereby cooperating with the cleaning brush 17 to further clean the rice hair on the screen to avoid its passability from deteriorating and affecting the screening efficiency.

[0031] The auxiliary arc-shaped knocking plate 27 below the slide 15 knocks the transposition mechanism 3 of the screen. The transposition mechanism 3 includes a second sliding rod 32 that rotates and moves along the second reciprocating screw rod 16. Both ends of the second sliding rod 32 are movably installed with a driving rod 33, and the driving rod 33 is connected with the side rod 25. A second tension spring 35 is fixed on the second sliding rod 32, and a penetrating rod 36 is penetrated on the second sliding rod 32. The second tension spring 35 is sleeved on the outside of the penetrating rod 36, and one end of the driving rod 33 is fixedly connected to the penetrating rod 36. An inverted trapezoidal second limiting groove 31 is opened on the bracket 21, and a slider 37 that slides along the second limiting groove 31 is installed at one end of the penetrating rod 36;

[0032] See Figures 4 to 7 As shown, during the rotation of the second reciprocating screw rod 16, since another thread on the second reciprocating screw rod 16 is connected to the bearing seat on the second sliding rod 32 through a ball nut pair, the second sliding rod 32 moves along the second reciprocating screw rod 16 during the rotation of the second reciprocating screw rod 16. When the second sliding rod 32 moves, it drives the driving rod 33 to move, and the driving rod 33 drives the through-rod 36 to move. The slider 37 at one end of the through-rod 36 will move along the second limiting groove 31 on the bracket 21. Since the second limiting groove 31 is designed to be an inverted trapezoid, during the movement of the slider 37 along the second limiting groove 31, the slider 37 drives the through-rod 36 to move on the second sliding rod 32 through the elastic force of the second tension spring 35. When the through-rod 36 moves, it drives the driving rod 33 to move. Since the driving rod 33 is through-connected with the side rod 25, refer to FIG. Figure 7As shown, when the driving rod 33 moves, the side rod 25 is driven to move, and the side rod 25 drives the arc-shaped knocking plate 27 at one end to move, thereby changing the position at which the arc-shaped knocking plate 27 knocks on the screen; thereby, while the arc-shaped knocking plate 27 knocks on the screen, the position at which the screen is knocked can be continuously changed, thereby further improving the efficiency and effectiveness of cleaning the screen.

[0033] Working principle: During the process of the rotary vibrating screen screening wet grain, the motor 12 is started, and the output end of the bracket 21 drives the first reciprocating screw 13 to rotate. Since the bearing seat on the slide 15 is connected to the first reciprocating screw 13 through a ball nut pair, the slide 15 moves along the first reciprocating screw 13 during the rotation of the first reciprocating screw 13. At the same time, the slide 15 can move along the moving track 11 using the pulley 14, thereby further increasing the stability of the movement of the slide 15; at the same time, when the slide 15 moves, the slide 15 drives the second reciprocating screw 16 to move, and the second reciprocating screw 16 drives the cleaning brush 17 to move above the screen, realizing the cleaning brush 1 7 moves horizontally at a uniform speed on the screen surface to clean the screen; at the same time, when the first reciprocating screw 13 rotates, the first reciprocating screw 13 drives the first bevel gear 18 to rotate, the first bevel gear 18 drives the second bevel gear 19 to rotate, the second bevel gear 19 drives the second reciprocating screw 16 to rotate, and the second reciprocating screw 16 drives the cleaning brush 17 to rotate, thereby rotating the cleaning brush 17 while moving horizontally at a uniform speed on the screen surface, further improving the cleaning effect of the cleaning brush 17 on the screen; when the rotary vibrating screen is working, the screen surface makes a horizontal circular motion and there is a relative motion between the cleaning brush 17 and the screen, which can realize the rotary cleaning function and clean the rice hair stuck on the screen.

[0034] During the rotation of the second reciprocating screw rod 16, since a thread on the second reciprocating screw rod 16 is also connected to the bearing seat on the first sliding rod 22 through a ball nut pair, the first sliding rod 22 moves along the second reciprocating screw rod 16 during the rotation of the second reciprocating screw rod 16. During the movement of the first sliding rod 22, the first sliding rod 22 drives the extrusion rod 23 to move up and down. During the up and down movement of the extrusion rod 23, the arc surface of the arc knocking plate 27 is squeezed. When the extrusion rod 23 squeezes the arc surface of the arc knocking plate 27, the arc knocking plate 27 is forced to flip over by the first tension spring 28. When the extrusion rod 23 is moved and the extrusion with the arc surface of the arc knocking plate 27 is cancelled, the arc knocking plate 27 is reset by the first tension spring 28. During the resetting process, the arc knocking plate 27 will knock on the screen through inertia, thereby cooperating with the cleaning brush 17 to further clean the rice hair on the screen to avoid its passability from deteriorating and affecting the screening efficiency.

[0035] When the second reciprocating screw rod 16 rotates, since another thread on the second reciprocating screw rod 16 is connected to the bearing seat on the second sliding rod 32 through a ball nut pair, the second sliding rod 32 moves along the second reciprocating screw rod 16 during the rotation of the second reciprocating screw rod 16. When the second sliding rod 32 moves, it drives the driving rod 33 to move, and the driving rod 33 drives the through rod 36 to move. The slider 37 at one end of the through rod 36 will move along the second limiting groove 31 on the bracket 21. Since the second limiting groove 31 is designed to be an inverted trapezoid, when the slider 37 moves along the second limiting groove 31, the elastic force of the second tension spring 35 drives the through rod 36 to move on the second sliding rod 32. When the through rod 36 moves, it drives the driving rod 33 to move. Since the driving rod 33 is connected to the side rod 25 through the through rod 25, refer to FIG. Figure 7 As shown, when the driving rod 33 moves, the side rod 25 is driven to move, and the side rod 25 drives the arc-shaped knocking plate 27 at one end to move, thereby changing the position where the arc-shaped knocking plate 27 knocks on the screen; thereby, the position where the arc-shaped knocking plate 27 knocks on the screen can be continuously changed while the arc-shaped knocking plate 27 knocks on the screen.

[0036] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. An automatic vibrating screening device for high-efficiency wet grain screening, characterized in that: The invention comprises a moving assembly (1) for cleaning the screen, wherein the moving assembly (1) comprises a moving track (11) mounted on the rotary vibrating screen, a slide (15) sliding on the moving track (11), a second reciprocating screw (16) rotating on the slide (15), and a cleaning brush (17) for cleaning the screen mounted on the bottom end of the second reciprocating screw (16); while the rotary vibrating screen screens the moist grain, the slide (15) on the moving track (11) enables the cleaning brush (17) to move horizontally at a uniform speed on the screen surface; The slide (15) is provided with a cleaning mechanism (2) for cleaning the screen with an auxiliary cleaning brush (17), the cleaning mechanism (2) includes a bracket (21) that moves synchronously with the slide (15), the second reciprocating screw (16) is provided with a first sliding rod (22) that moves along the second reciprocating screw (16) when the second reciprocating screw (16) rotates, both ends of the first sliding rod (22) pass through the bracket (21) and are provided with an extrusion rod (23), the bracket (21) is provided with a side rod (25), the bottom end of the side rod (25) is fixed with a first tension spring (28), one end of the first tension spring (28) is fixed with a spring connected to the extrusion rod (23), and the first tension spring (28) is provided with a spring connected to the extrusion rod (23). The arc-shaped knocking plate (27) is contacted and squeezed, and during the rotation of the second reciprocating screw (16), the first sliding rod (22) reciprocates along the second reciprocating screw (16), and at the same time, the first sliding rod (22) drives the squeezing rod (23) to move up and down, and during the up and down movement of the squeezing rod (23), the arc-shaped knocking plate (27) is contacted and squeezed, and the arc-shaped knocking plate (27) is deformed by the first tension spring (28), and when the squeezing rod (23) cancels the squeezing of the arc-shaped knocking plate (27), the arc-shaped knocking plate (27) is reset by the first tension spring (28) and contacts and knocks the screen by inertia; An auxiliary arc-shaped knocking plate (27) below the slide seat (15) knocks the screen mesh of the shifting mechanism (3), and the shifting mechanism (3) includes a second sliding rod (32) that rotates and moves along the second reciprocating screw rod (16), and a driving rod (33) is movably installed at both ends of the second sliding rod (32), and the driving rod (33) is connected to the side rod (25).

2. The automatic vibrating screening device for high-efficiency wet grain screening according to claim 1 is characterized in that: The movable track (11) is installed above the rotary vibrating screen, and a pulley (14) that moves on the movable track (11) is installed above the slide seat (15).

3. The automatic vibrating screening device for high-efficiency wet grain screening according to claim 1 is characterized in that: A motor (12) is fixed to one end of the movable track (11), a first reciprocating screw (13) is installed at the output end of the motor (12), and the bearing seat on the slide (15) is connected to the first reciprocating screw (13) via a ball nut pair.

4. The automatic vibrating screening device for high-efficiency wet grain screening according to claim 3 is characterized in that: The second reciprocating screw (16) and the cleaning brush (17) are of detachable design; a first bevel gear (18) is mounted on the first reciprocating screw (13); and a second bevel gear (19) meshing with the first bevel gear (18) is provided on the second reciprocating screw (16).

5. The automatic vibrating screening device for high-efficiency wet grain screening according to claim 1 is characterized in that: The second reciprocating screw rod (16) is provided with two threads, and one thread on the second reciprocating screw rod (16) is connected to the bearing seat on the first sliding rod (22) through a ball nut pair.

6. The automatic vibrating screening device for high-efficiency wet grain screening according to claim 5 is characterized in that: Another thread on the second reciprocating screw (16) is connected to the bearing seat on the second sliding rod (32) through a ball nut pair.

7. The automatic vibrating screening device for high-efficiency wet grain screening according to claim 1 is characterized in that: The bracket (21) is provided with a first limiting groove (26) for the first sliding rod (22) to slide.

8. The automatic vibrating screening device for high-efficiency wet grain screening according to claim 1 is characterized in that: The side rod (25) is provided with a third limiting groove (34) for driving the rod (33) to slide.

9. The automatic vibrating screening device for high-efficiency wet grain screening according to claim 1 is characterized in that: A second tension spring (35) is fixed on the second sliding rod (32), a penetrating rod (36) passes through the second sliding rod (32), and the second tension spring (35) is sleeved on the outside of the penetrating rod (36), and one end of the driving rod (33) is fixedly connected to the penetrating rod (36).

10. The automatic vibrating screening device for high-efficiency wet grain screening according to claim 1, characterized in that: A second inverted trapezoidal limiting groove (31) is provided on the bracket (21), and a slider (37) that slides along the second limiting groove (31) is installed at one end of the through rod (36).

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