Automatic vibrating screen equipment for efficiently screening wet grains

Abstract

The invention relates to the technical field of wet grain screening, in particular to high-efficiency automatic vibrating screen equipment for wet grain screening, which comprises a moving assembly for cleaning a screen mesh, the moving assembly comprises a moving track mounted on a rotary vibrating screen, a sliding seat is slidably arranged on the moving track, and a second reciprocating screw rod is rotatably arranged on the sliding seat; a cleaning brush for cleaning the screen is mounted at the bottom end of the second reciprocating screw rod; according to the automatic vibrating screen equipment capable of efficiently screening the wet grains, when the rotary vibrating screen works, the screen surface does horizontal circular motion and moves relative to the cleaning brush, the rotary cleaning function can be achieved, and the automatic vibrating screen equipment capable of efficiently screening the wet grains has the advantages that the automatic vibrating screen equipment is simple in structure, convenient to operate and high in practicability. The rice hair adhered to the screen is cleaned, so that the passing rate of the damp grains on the screen surface is increased; and it is avoided that after screening holes of the screen are blocked to a certain degree, the screening efficiency of the damp grains is seriously affected.

Description

Technical Field

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

[0002] When using a rotary vibrating screen to screen the rice hair in rice, some of the rice hair will stick to the screen. As a result, during the screening of damp grain, the rice hair will block the sieve holes of the rotary vibrating screen, resulting in poor grain permeability in the sieve holes. When the sieve holes of the screen are blocked to a certain extent, the screening efficiency of the damp grain 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, so as to realize the rotary cleaning function, and clean up the rice hairs adhering to the screen, so as to increase 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 the 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 seat sliding on the moving track, a second reciprocating screw rod rotating on the slide seat, and a cleaning brush for cleaning the screen being installed at the bottom end of the second reciprocating screw rod; while the rotary vibrating screen screens the wet grain, the slide seat realizes the lateral uniform movement of the cleaning brush on the screen surface on the moving track; a cleaning mechanism is provided on the slide seat to assist the cleaning brush in cleaning the screen, the cleaning mechanism comprises a bracket that moves synchronously with the slide seat, a first sliding rod is provided on the second reciprocating screw rod, which 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, and a side rod is provided on the bracket, and the bottom end of the side rod is fixed A first tension spring is provided, one end of which is fixed with an arc-shaped knocking plate which 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, and at the same time, the first sliding rod drives the extrusion rod to move up and down, and during the up and down movement of the extrusion rod, the arc-shaped knocking plate contacts and squeezes the arc surface of the arc-shaped knocking plate, and the arc-shaped knocking plate is deformed by the first tension spring. When the extrusion rod cancels the extrusion of the arc surface of the arc-shaped knocking plate, the arc-shaped knocking plate is reset by the first tension spring and contacts and knocks the screen by inertia; a shifting mechanism for assisting the arc-shaped knocking plate to knock the screen is provided below the sliding seat, and the shifting mechanism includes a second sliding rod which 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 through-connected with the side rods.

[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 seat.

[0006] Preferably, a motor is fixed at 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 sliding seat 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 disposed on the second reciprocating screw.

[0008] Preferably, two threads are formed 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 rod is also 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 second limiting groove for sliding the driving rod 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 second limiting groove sliding 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: 1. The present invention utilizes the movement of the slide seat to drive the second reciprocating screw rod to move, and the second reciprocating screw rod drives the cleaning brush to move above the screen, so that the cleaning brush can move horizontally at a uniform speed on the screen surface to clean the screen; at the same time, when the first reciprocating screw rod rotates, the first reciprocating screw rod drives the first bevel gear to rotate, the first bevel gear drives the second bevel gear to rotate, the second bevel gear drives the second reciprocating screw rod to rotate, and the second reciprocating screw rod drives the cleaning brush to rotate, thereby the cleaning brush can rotate while moving horizontally at a uniform speed on the screen surface, thereby further improving the cleaning effect of the cleaning brush on the screen; when the rotary vibrating screen is working, the screen surface makes a horizontal circular motion and there is a relative motion with the cleaning brush, which can realize the rotary cleaning function and clean up the rice hair stuck to the screen, thereby increasing the passing rate of moist grain on the screen surface; and avoiding that the screen holes of the screen are blocked to a certain extent, which will seriously affect the screening efficiency of moist grain.

[0015] 2. The present invention allows the second reciprocating screw to rotate. Since a thread on the second reciprocating screw is also connected to the bearing seat on the first sliding rod through a ball nut pair, the first sliding rod moves along the second reciprocating screw during the rotation of the second reciprocating screw. During the movement of the first sliding rod, the first sliding rod drives the extruding rod to move up and down. During the up and down movement of the extruding rod, the arc surface of the arc knocking plate is squeezed. When the extruding rod squeezes the arc surface of the arc knocking plate, the arc knocking plate is forced to flip over through the first tension spring. When the extrusion rod cancels the extrusion with the arc surface of the arc knocking plate during the movement of the extruding 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 inertial activity, thereby cooperating with the cleaning brush to further clean the rice hair on the screen to avoid the deterioration of its passability and affect the screening efficiency.

[0016] 3. In the process of the second limiting groove moving along the second limiting groove, the second limiting groove drives the through rod to move on the second sliding rod through the elastic force of the second tension spring, and the through rod drives the driving rod to move when it moves. Since the driving rod is connected with the side rod through the through rod, 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, thereby further improving the efficiency and effectiveness of cleaning the screen. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 The second schematic diagram of the overall structure of the present invention; Figure 3 It is a partial structural schematic diagram of the present invention; Figure 4 The second schematic diagram of the partial structure of the present invention; Figure 5 The third is a partial structural schematic diagram of the present invention; Figure 6 The fourth is a partial structural schematic diagram of the present invention; Figure 7 It is a partial structural schematic diagram of the connection between the cleaning mechanism and the transposition mechanism of the present invention.

[0018] In the figure: 1. moving component; 11. moving track; 12. motor; 13. first reciprocating screw; 14. pulley; 15. slide seat; 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. second limiting groove; 35. second tension spring; 36. through rod. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution 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 claimed invention, 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 creative work are within the scope of protection of the present invention.

[0020] 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 seat 15 sliding on the moving track 11, a second reciprocating screw rod 16 rotating on the slide seat 15, a cleaning brush 17 for cleaning the screen installed at the bottom end of the second reciprocating screw rod 16; while the rotary vibrating screen screens the wet grain, the slide seat 15 on the moving track 11 realizes the lateral uniform movement of the cleaning brush 17 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 seat 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 seat 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 detachably designed, 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; See also Figures 1 to 5As shown, during the process of the rotary vibrating screen screening the 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, during the rotation of the first reciprocating screw 13, the slide 15 moves along the first reciprocating screw 13, and 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 the cleaning brush 17 rotates 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 with the cleaning brush 17, which can realize the rotary cleaning function, and clean the rice hair adhering to the screen, so as to increase the passing rate of wet grain on the screen surface; avoid the screen holes of the screen being blocked to a certain extent, which will seriously affect the screening efficiency of wet grain; 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 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 The first sliding rod 22 reciprocates 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 the arc-shaped knocking plate 27 is 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 first sliding rod 22 to slide, and the side rod 25 is provided with a second limiting groove 34 for the driving rod 33 to slide; See also 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 through the first tension spring 28. When the extrusion rod 23 cancels the extrusion with the arc surface of the arc knocking plate 27 during the movement of the extrusion rod 23, 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 inertial activity, thereby cooperating with the cleaning brush 17 to further clean the rice hair on the screen to avoid its poor passability and affect the screening efficiency.

[0021] The auxiliary arc-shaped knocking plate 27 below the slide seat 15 knocks the transposition mechanism 3 of the screen, and the transposition mechanism 3 includes a second sliding rod 32 that rotates and moves along the second reciprocating screw rod 16, and both ends of the second sliding rod 32 are movably installed with driving rods 33, and the driving rod 33 is connected with the side rod 25 through, and a second tension spring 35 is fixed on the second sliding rod 32, and a through rod 36 is penetrated on the second sliding rod 32, and the second tension spring 35 is sleeved on the outside of the through rod 36, and one end of the driving rod 33 is fixedly connected with the through rod 36, and an inverted trapezoidal second limiting groove 31 is opened on the bracket 21, and a second limiting groove 34 that slides along the second limiting groove 31 is installed at one end of the through rod 36; See also 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, and the second sliding rod 32 drives the driving rod 33 to move when it moves, and the driving rod 33 drives the through rod 36 to move, and the second limiting groove 34 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 have an inverted trapezoidal shape, during the movement of the second limiting groove 34 along the second limiting groove 31, the second limiting groove 34 drives the through rod 36 to move on the second sliding rod 32 through the elastic force of the second tension spring 35, and the driving rod 33 is driven to move when the through rod 36 moves. Since the driving rod 33 is throughly connected with the side rod 25, see 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 where the arc-shaped knocking plate 27 knocks on the screen; thereby, while the arc-shaped knocking plate 27 knocks on the screen, the position of the knocking screen can be continuously changed, thereby further improving the efficiency and effectiveness of cleaning the screen.

[0022] 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, during the rotation of the first reciprocating screw 13, the slide 15 moves along the first reciprocating screw 13, and 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 with the cleaning brush 17, which can realize the rotary cleaning function and clean the rice hair adhering to the screen.

[0023] 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. During the movement of the extrusion rod 23, when 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 inertial activity, thereby cooperating with the cleaning brush 17 to further clean the rice hair on the screen to avoid its poor passability and affect the screening efficiency.

[0024] During the rotation of the second reciprocating screw rod 16, since another thread on the second reciprocating screw rod 16 is also connected to the bearing seat on the second sliding rod 32 through a ball nut pair, during the rotation of the second reciprocating screw rod 16, the second sliding rod 32 moves along the second reciprocating screw rod 16, and the second sliding rod 32 drives the driving rod 33 to move when it moves, and the driving rod 33 drives the through rod 36 to move, and the second limiting groove 34 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 have an inverted trapezoidal shape, during the movement of the second limiting groove 34 along the second limiting groove 31, the second limiting groove 34 drives the through rod 36 to move on the second sliding rod 32 through the elastic force of the second tension spring 35, and the driving rod 33 is driven to move when the through rod 36 moves. Since the driving rod 33 is throughly connected with the side rod 25, refer to 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 of the arc-shaped knocking plate 27 knocking the screen; thereby, the position of the arc-shaped knocking plate 27 knocking the screen can be continuously changed while the arc-shaped knocking plate 27 knocks the screen.

[0025] Although 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 the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present 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, the moving assembly (1) comprising a moving track (11) mounted on the rotary vibrating screen, a slide seat (15) sliding on the moving track (11), a second reciprocating screw rod (16) rotating on the slide seat (15), a cleaning brush (17) for cleaning the screen being mounted at the bottom end of the second reciprocating screw rod (16); while the rotary vibrating screen is screening wet grain, the slide seat (15) on the moving track (11) enables the cleaning brush (17) to move horizontally at a uniform speed on the screen surface; The slide seat (15) is provided with a cleaning mechanism (2) for cleaning the screen with an auxiliary cleaning brush (17), the cleaning mechanism (2) comprising a bracket (21) that moves synchronously with the slide seat (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 that is connected to the extrusion rod (23), and the second end of the first tension spring (28) is fixed with a spring that is connected to the extrusion rod (23). The arc-shaped knocking plate (27) contacts and squeezes the arc-shaped knocking plate (27), and during the rotation of the second reciprocating screw rod (16), the first sliding rod (22) reciprocates 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 during the up and down movement of the extrusion rod (23), the arc-shaped knocking plate (27) contacts and squeezes the arc-shaped knocking plate (27), and the arc-shaped knocking plate (27) is deformed by the first tension spring (28), and when the extrusion rod (23) cancels the extrusion 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 on a shifting mechanism (3) of the screen, the shifting mechanism (3) comprising a second sliding rod (32) that rotates on the second reciprocating screw rod (16) and moves along the second reciprocating screw rod (16), and driving rods (33) are movably mounted on both ends of the second sliding rod (32), and the driving rod (33) is connected to the side rod (25) through.

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 mounted on the output end of the motor (12), and the bearing seat on the slide seat (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 disposed 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) via 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 second limiting groove (34) for the driving 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 penetration rod (36) penetrates the second sliding rod (32), and the second tension spring (35) is sleeved on the outside of the penetration rod (36), and one end of the driving rod (33) is fixedly connected to the penetration rod (36).

10. The automatic vibrating screening device for high-efficiency wet grain screening according to claim 1, characterized in that: The bracket (21) is provided with an inverted trapezoidal second limiting groove (31), and one end of the through rod (36) is provided with a second limiting groove (34) that slides along the second limiting groove (31).

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