Large-flow unprocessed grain cleaning sieve with rotary vibration mechanism

Abstract

The invention relates to the technical field of cleaning sieves, and discloses a large-flow unprocessed grain cleaning sieve with a rotary vibration mechanism, which comprises a rack, a rotary vibration generating mechanism is mounted on the rack, a vibration sieve frame capable of reciprocating bidirectionally, a rotary screening rubber sleeve and a movable shaft are in transmission connection with the rotary vibration generating mechanism, and the screening rubber sleeve is rotatably connected with the vibration sieve frame. A screening area capable of being elastically deformed is fixedly arranged on the screening rubber cylinder, a set of bidirectional elastic limiting pieces are installed between the vibrating screen frame and the machine frame, and a grain injection box is installed on the vibrating screen frame. Through the arrangement of the cam plate, the screening rubber barrel can elastically deform in a reciprocating mode when moving to the connecting position of the screening rubber barrel and the cam plate, through the reciprocating deformation of the screening rubber barrel, the shape of screening holes in a screening area is changed in a reciprocating mode, and grain materials blocking the screening holes can be forcibly extruded and discharged; and therefore, the grains blocked on the screening holes are forcibly extruded and discharged.

Description

Technical Field

[0001] The present invention relates to the technical field of cleaning sieves, and more specifically, to a large-flow raw grain cleaning sieve with a rotary vibration mechanism. Background Art

[0002] With the improvement of the mechanization and automation levels of agricultural production, the production efficiency in stages such as the planting and harvesting of raw grains has been greatly improved, which also poses high requirements for the processing efficiency and quality of raw grains after harvesting. Since a large amount of impurities are contained in raw grains, if not properly processed, it will cause the grains to heat and mildew, resulting in economic losses. Therefore, the impurity removal work before the raw grains are stored in the warehouse is particularly important. Currently in the market, generally, a roller or a vibrating sieve is used to clean the impurities in raw grains.

[0003] In the prior art, a patent document with the publication number of CN115945389A discloses a raw grain cleaning sieve, including: a frame body, a roller, a first sieve hole is provided on the peripheral wall of the roller, the roller is rotatably connected to the frame body, a waste discharge port is provided at the end of the roller, and the roller is inclined towards the waste discharge port, a driving mechanism, which is arranged on the frame body, and the driving mechanism is in transmission connection with the roller to drive the roller to rotate. The above vibrating sieve can achieve large-amplitude vibration, enabling the raw grains to be fully screened in the vibrating sieve, improving the screening effect. However, when screening grains, on the one hand, it is not convenient to realize the synchronous bidirectional vibration screening of the screening mechanism through a single motor linkage and improve the vibration amplitude and screening intensity of the screening device. On the other hand, it is not convenient to synchronously realize the cam-type deformation extrusion and blockage removal of the blocked impurities on the sieve cylinder during the operation of the sieve cylinder. Subsequently, it is not convenient to maintain the high screening performance of the screening mechanism. Based on this, the present invention provides a large-flow raw grain cleaning sieve with a rotary vibration mechanism to solve the technical problems raised in the above background art. Summary of the Invention

[0004] In order to overcome the deficiencies of the prior art, the present invention provides a large-flow raw grain cleaning sieve with a rotary vibration mechanism. Through the setting of a cam plate, when the screening rubber cylinder moves to the connection position with the cam plate, it can undergo reciprocating elastic deformation. Through the reciprocating deformation of the screening rubber cylinder, the shape of the sieve holes in the screening area is changed reciprocally, and the grain materials blocked on the screening holes can be forced to be extruded and discharged, thereby realizing the forced extrusion and discharge of the blocked grain materials on the screening holes, and then realizing the cam-type deformation extrusion and blockage removal effect of the screening holes. By realizing the cam-type deformation extrusion and blockage removal effect of the screening holes, the blockage rate of the screening holes is reduced, and the screening efficiency and screening effect of the grain cleaning sieve are maintained. Through the setting of two reset rollers, the screening rubber cylinder can be automatically reset after deformation, and then the deformation and reset process can be cyclically realized.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical scheme: a large-flow raw grain cleaning screen with a rotary vibration mechanism comprises a frame, a rotary vibration generating mechanism is installed on the frame, a vibrating screen frame that can reciprocate in both directions and a rotatable screening rubber cylinder and a shift shaft are transmission-connected to the rotary vibration generating mechanism, the screening rubber cylinder is rotatably connected to the vibrating screen frame, a screening area that can be elastically deformed is fixedly arranged on the screening rubber cylinder, a group of bidirectional elastic limiters are installed between the vibrating screen frame and the frame, a grain filling box is installed on the vibrating screen frame, the shift shaft is rotatably connected to the grain filling box, a differential module and an auger shaft driven by the differential module are installed on the grain filling box, a spiral auger that is fitted with the screening rubber cylinder is installed on the auger shaft, a cam shaft is rotatably installed on the vibrating screen frame, the cam shaft is linked with the screening rubber cylinder, a cam plate that drives the screening rubber cylinder to deform is installed on the cam shaft, two reset rollers are rotatably installed on the inner wall of the vibrating screen frame and corresponding to the position inside the screening rubber cylinder, and both of the reset rollers are fitted with the screening rubber cylinder.

[0006] As a preferred technical solution of the present invention, each of the bidirectional elastic limit members includes a slide groove opened on the frame, the inner wall of the slide groove is slidably connected with an elastic seat, the side of the elastic seat is equipped with an axial spring limited by the frame, the inner wall of the elastic seat is slidably connected with a T-shaped guide rod, the bottom end of the T-shaped suspension rod is fixedly connected to the vibrating screen frame, and the T-shaped suspension rod is sleeved with a longitudinal spring limited by the elastic seat.

[0007] As a preferred technical solution of the present invention, the rotation vibration generating mechanism includes a motor installed on a frame, a square shaft installed on the output shaft end of the motor, an upper pulley and a lower pulley rotatably installed on the frame, a vertical vibration frame slidably connected to the frame, and a longitudinal rotation sleeve and a transverse rotation sleeve rotatably installed on the vertical vibration frame. The square shaft and the upper pulley are both equipped with a first bevel tooth, and the two first bevel teeth are meshed with each other. The upper pulley is connected to the lower pulley through a first belt, and the lower pulley is equipped with a first semicircular gear. The vertical vibration frame is equipped with a vertical tooth plate, and the first semicircular gear is connected to the vertical tooth plate. The longitudinal rotation sleeve is driven by the square shaft, and the longitudinal rotation sleeve and the transverse rotation sleeve are both equipped with second bevel teeth, and the two second bevel teeth are meshed with each other. The shift axis is driven by the transverse rotation sleeve, and a reciprocating drive module is installed between the vertical vibration frame and the transverse vibration frame.

[0008] As a preferred technical solution of the present invention, the interior of the longitudinal rotating sleeve is fixed with a first empty slot with an opening at the top and slidably connected to the square shaft, the movable shaft is provided with a linkage section, and the interior of the transverse rotating sleeve is fixed with a second empty slot with openings at both ends and slidably connected to the linkage section, and the cross-sections of the first empty slot, the second empty slot, the linkage section and the square shaft are all regular polygons.

[0009] As a preferred technical solution of the present invention, the reciprocating drive module includes a main pulley and a secondary pulley rotatably connected to the vertical vibration frame. The main pulley is drivingly connected to the secondary pulley through a second belt. A third bevel gear is installed on the main pulley, and the third bevel gear is drivingly connected to a second bevel gear on the transverse rotating sleeve. A flat toothed plate is installed on the vibrating screen frame, and a second semi-circular gear drivingly connected to the flat toothed plate is installed on the secondary pulley.

[0010] As a preferred technical solution of the present invention, the rotary vibration generating mechanism further includes a coupling rotatably installed on the vibrating screen frame. The coupling is drivingly connected to the shifting shaft through a third belt. Tooth rings are installed on both the coupling and the screening rubber cylinder, and the two tooth rings mesh with each other.

[0011] As a preferred technical solution of the present invention, the screening area is made of rubber material. Multiple groups of sieve holes are arranged on the screening area in a circumferential array distribution. The screening area is a hollow cylindrical structure with openings at both ends.

[0012] As a preferred technical solution of the present invention, the differential module includes a differential shaft rotatably connected to the grain feeding box. First gears are installed on both the differential shaft and the shifting shaft, and the two first gears mesh with each other. Second gears are installed on both the differential shaft and the auger shaft, and the two second gears mesh with each other. The rotation axis of the auger shaft is directly below the rotation axis of the shifting shaft, and the rotation axis of the shifting shaft is on the same straight line as the rotation axis of the screening rubber cylinder.

[0013] As a preferred technical solution of the present invention, an external gear is installed on the camshaft, and the external gear is drivingly connected to the tooth ring on the screening rubber cylinder.

[0014] As a preferred technical solution of the present invention, a set of casters is installed on the bottom surface of the frame.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0016] 1. Through the setting of the cam plate in the present invention, the screening rubber cylinder can undergo reciprocating elastic deformation when moving to the connection position with the cam plate. Through the reciprocating deformation of the screening rubber cylinder, the shape of the sieve holes on the screening area is changed reciprocally, and the grain materials blocked on the sieve holes can be forcibly extruded and discharged. Subsequently, the forced extrusion and discharge of the blocked grain materials on the sieve holes are realized, and then the cam-type deformation extrusion and blockage removal effect of the sieve holes is achieved. Through the realization of the cam-type deformation extrusion and blockage removal effect of the sieve holes, the blockage rate of the sieve holes is reduced, and the screening efficiency and screening effect of this grain cleaning sieve are maintained. Through the setting of two reset rollers, the screening rubber cylinder can be automatically reset after deformation, and then the deformation and reset process can be cyclically realized.

[0017] 2. In the present invention, during the screening operation, the motor outputs a rotational speed at a set power. After the motor outputs the rotational speed, through the arrangement of a set of bidirectional elastic limit members, the vertical toothed plate and the flat toothed plate, the vibrating sieve frame and the screening rubber cylinder can vibrate synchronously in both directions within a set stroke. Through the occurrence of the synchronous bidirectional vibration of the screening rubber cylinder, the vibration screening effect, vibration screening efficiency, and vibration screening intensity of the screening rubber cylinder can be effectively improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic structural diagram of the large-flow raw grain cleaning sieve with a rotary vibration mechanism of the present invention;

[0019] Figure 2 of the present invention Figure 1 is a schematic structural diagram from another perspective;

[0020] Figure 3 of the present invention Figure 2 is a schematic cross-sectional structural diagram;

[0021] Figure 4 of the present invention Figure 3 is a schematic diagram of the enlarged partial structure at A in the present invention;

[0022] Figure 5 of the present invention Figure 3 is a schematic diagram of the enlarged partial structure at B in the present invention;

[0023] Figure 6 is a schematic structural diagram of the grain injection box and the screening rubber cylinder of the present invention;

[0024] Figure 7 of the present invention Figure 6 is a schematic diagram of the enlarged partial structure at C in the present invention;

[0025] Figure 8 of the present invention Figure 6 is a schematic diagram of the enlarged partial structure at D in the present invention;

[0026] Figure 9 is a schematic structural diagram of the T-shaped hanging rod and the gear ring of the present invention;

[0027] Figure 10 is a schematic structural diagram of the vertical vibration frame of the present invention.

[0028] In the figure: 1. frame; 2. vibrating screen frame; 3. screening rubber cylinder; 4. shifting axis; 5. screening area; 6. grain filling box; 7. auger shaft; 8. spiral auger; 9. cam shaft; 10. cam plate; 11. reset roller; 12. elastic beam seat; 13. axial spring; 14. T-shaped suspension rod; 15. longitudinal spring; 16. motor; 17. square shaft; 18. upper pulley; 19. lower pulley; 20. vertical vibrating frame; 21. longitudinal rotating sleeve; 22. transverse rotating sleeve; 23. first semicircular gear; 24. vertical tooth plate; 25. main pulley; 26. secondary pulley; 27. flat tooth plate; 28. second semicircular gear; 29. coupling; 30. gear ring; 31. differential shaft; 32. first gear; 33. second gear; 34. external gear; 35. caster; 36. linkage section. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] like Figures 1 to 10 As shown, the present invention provides a large-flow raw grain cleaning screen with a rotary vibration mechanism, comprising a frame 1, and a group of casters 35 are installed on the bottom surface of the frame 1;

[0031] A rotary vibration mechanism is installed on the frame 1, and a vibrating screen frame 2 that can reciprocate in both directions, a rotatable screening rubber cylinder 3 and a shift shaft 4 are connected to the rotary vibration mechanism in a transmission manner, and the screening rubber cylinder 3 is rotatably connected to the vibrating screen frame 2;

[0032] An elastically deformable screening area 5 is fixedly provided on the screening rubber cylinder 3. The screening area 5 is made of rubber material and has a plurality of groups of screening holes distributed in a circular array. The screening area 5 is a hollow cylindrical structure with openings at both ends.

[0033] A set of bidirectional elastic limiters is installed between the vibrating screen frame 2 and the frame 1;

[0034] Each bidirectional elastic limiter comprises a slide groove provided on the frame 1, the inner wall of the slide groove is slidably connected with an elastic seat 12, the side of the elastic seat 12 is provided with an axial spring 13 limited by the frame 1, the inner wall of the elastic seat 12 is slidably connected with a T-shaped guide rod, the bottom end of the T-shaped suspension rod 14 is fixedly connected to the vibrating screen frame 2, and the T-shaped suspension rod 14 is sleeved with a longitudinal spring 15 limited by the elastic seat 12;

[0035] During the screening operation, the axial spring 13 and the longitudinal spring 15 are arranged to perform bidirectional synchronous elastic limiting on the vibrating screen frame 2;

[0036] The rotary vibration generating mechanism includes a motor 16 installed on the frame 1, a square shaft 17 installed at the output shaft end of the motor 16, an upper pulley 18 and a lower pulley 19 rotatably installed on the frame 1, a vertical vibration frame 20 slidably connected to the frame 1, and a longitudinal rotary sleeve 21 and a transverse rotary sleeve 22 rotatably installed on the vertical vibration frame 20;

[0037] First bevel gears are installed on both the square shaft 17 and the upper pulley 18, and the two first bevel gears mesh with each other;

[0038] The upper pulley 18 is drivingly connected to the lower pulley 19 through a first belt;

[0039] A first semi-circular gear 23 is installed on the lower pulley 19, a vertical tooth plate 24 is installed on the vertical vibration frame 20, the first semi-circular gear 23 is drivingly connected to the vertical tooth plate 24, and the longitudinal rotary sleeve 21 is driven by the square shaft 17;

[0040] A first empty slot with an open top and slidably connected to the square shaft 17 is fixedly formed inside the longitudinal rotary sleeve 21;

[0041] Second bevel gears are installed on both the longitudinal rotary sleeve 21 and the transverse rotary sleeve 22, the two second bevel gears mesh with each other, and the shifting shaft 4 is driven by the transverse rotary sleeve 22;

[0042] A linkage section 36 is provided on the shifting shaft 4, a second empty slot with both ends open and slidably connected to the linkage section 36 is fixedly formed inside the transverse rotary sleeve 22, and the cross-sections of the first empty slot, the second empty slot, the linkage section 36, and the square shaft 17 are all regular polygons;

[0043] A reciprocating driving module is installed between the vertical vibration frame 20 and the horizontal vibration frame;

[0044] The reciprocating driving module includes a main pulley 25 and a secondary pulley 26 rotatably connected to the vertical vibration frame 20, the main pulley 25 is drivingly connected to the secondary pulley 26 through a second belt, a third bevel gear is installed on the main pulley 25, and the third bevel gear is drivingly connected to the second bevel gear on the transverse rotary sleeve 22;

[0045] A flat tooth plate 27 is installed on the vibrating screen frame 2, and a second semi-circular gear 28 drivingly connected to the flat tooth plate 27 is installed on the secondary pulley 26;

[0046] Through the setting of the regular polygon cross-section of the square shaft 17 and the first empty slot, when the vertical vibration frame 20 moves up and down reciprocally, the square shaft 17 can continuously drive the longitudinal rotary sleeve 21;

[0047] Through the setting of the regular polygon cross-section of the linkage section 36 and the second empty slot, when the vibrating screen frame 2 moves left and right reciprocally, the transverse rotary sleeve 22 can continuously drive the shifting shaft 4;

[0048] When the motor 16 outputs the speed, a set of bidirectional elastic limiters, vertical tooth plates 24 and horizontal tooth plates 27 are provided, so that the vibrating screen frame 2 and the screening rubber cylinder 3 can be synchronously bidirectionally vibrated within the set stroke;

[0049] The synchronous bidirectional vibration of the screening rubber cylinder 3 is performed to effectively improve the vibration screening effect, vibration screening efficiency and vibration screening intensity of the screening rubber cylinder 3;

[0050] The rotary vibration generating mechanism also includes a coupling shaft 29 rotatably mounted on the vibrating screen frame 2, the coupling shaft 29 is connected to the shift shaft 4 through a third belt, and a gear ring 30 is installed on the coupling shaft 29 and the screening rubber cylinder 3, and the two gear rings 30 are meshed with each other;

[0051] A grain filling box 6 is installed on the vibrating screen frame 2, and the shift shaft 4 is rotatably connected to the grain filling box 6. A differential module and an auger shaft 7 driven by the differential module are installed on the grain filling box 6, and a spiral auger 8 that fits the screening rubber cylinder 3 is installed on the auger shaft 7;

[0052] The differential module includes a differential shaft 31 rotatably connected to the grain filling box 6, a first gear 32 is installed on the differential shaft 31 and the shift shaft 4, and the two first gears 32 are meshed with each other, and a second gear 33 is installed on the differential shaft 31 and the auger shaft 7, and the two second gears 33 are meshed with each other;

[0053] The rotation axis of the auger shaft 7 is directly below the rotation axis of the shift shaft 4, and the rotation axis of the shift shaft 4 and the rotation axis of the screening rubber cylinder 3 are on the same straight line;

[0054] A cam shaft 9 is rotatably mounted on the vibrating screen frame 2, and the cam shaft 9 is linked with the screening rubber cylinder 3;

[0055] An external gear 34 is mounted on the camshaft 9, and the external gear 34 is transmission-connected to the gear ring 30 on the screening rubber cylinder 3;

[0056] A cam plate 10 is mounted on the cam shaft 9 to drive the deformation of the screening rubber cylinder 3;

[0057] By setting the cam plate 10, the screening rubber cylinder 3 can undergo reciprocating elastic deformation when it moves to the connection position with the cam plate 10. By the reciprocating deformation of the screening rubber cylinder 3, the shape of the screen hole on the screening area 5 is reciprocated and the grain blocked on the screening hole can be forced to be squeezed out, thereby realizing the forced extrusion and discharge of the blocked grain on the screening hole, thereby realizing the cam-type deformation extrusion and unblocking effect of the screening hole. By realizing the cam-type deformation extrusion and unblocking effect of the screening hole, the blockage rate of the screening hole is reduced and the screening efficiency and screening effect of the grain cleaning screen are maintained;

[0058] Two reset rollers 11 are rotatably installed at positions on the inner wall of the vibrating sieve frame 2 corresponding to the inner side of the screening rubber cylinder 3. The cam plate 10 is arranged between the two reset rollers 11, and both of the two reset rollers 11 are in contact with the screening rubber cylinder 3.

[0059] Through the arrangement of the two reset rollers 11, the screening rubber cylinder 3 can be automatically reset after deformation, and then the deformation and reset process can be cyclically realized.

[0060] The working principle and usage process of the present invention:

[0061] This device is mainly applicable to the screening operation of raw grains. When the screening operation is carried out, the motor 16 outputs a rotational speed at a set power. After the motor 16 outputs the rotational speed, through the arrangement of a set of bidirectional elastic limit members, the vertical tooth plate 24 and the flat tooth plate 27, the vibrating sieve frame 2 and the screening rubber cylinder 3 can vibrate synchronously in both directions within a set stroke. Through the synchronous bidirectional vibration of the screening rubber cylinder 3, the vibration screening effect, vibration screening efficiency and vibration screening intensity of the screening rubber cylinder 3 can be effectively improved. Through the arrangement of the cam plate 10, the screening rubber cylinder 3 can undergo reciprocating elastic deformation when it moves to the connection position with the cam plate 10. Through the reciprocating deformation of the screening rubber cylinder 3, the shape of the sieve holes on the screening area 5 can be changed reciprocally and the grain materials blocked on the screening holes can be forced to be extruded and discharged, thereby realizing the forced extrusion and discharge of the blocked grain materials on the screening holes, and then realizing the cam-type deformation extrusion and blockage removal effect of the screening holes. Through the realization of the cam-type deformation extrusion and blockage removal effect of the screening holes, the blockage rate of the screening holes can be reduced and the screening efficiency and screening effect of this grain cleaning sieve can be maintained. Through the arrangement of the two reset rollers 11, the screening rubber cylinder 3 can be automatically reset after deformation, and then the deformation and reset process can be cyclically realized.

[0062] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device.

[0063] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. The large-flow raw grain cleaning sieve with a rotary vibration mechanism comprises a frame (1), and is characterized in that: The frame (1) is provided with a rotary vibration generating mechanism, the rotary vibration generating mechanism is connected to a vibrating screen frame (2) capable of bidirectional reciprocating movement, a rotatable screening rubber cylinder (3) and a shift shaft (4), the screening rubber cylinder (3) is rotatably connected to the vibrating screen frame (2), an elastically deformable screening area (5) is fixedly provided on the screening rubber cylinder (3), a group of bidirectional elastic limiting members are installed between the vibrating screen frame (2) and the frame (1), a grain injection box (6) is installed on the vibrating screen frame (2), the shift shaft (4) is rotatably connected to the grain injection box (6), and the grain injection box (6) is provided with a plurality of movable parts. A differential module and an auger shaft (7) driven by the differential module are installed, a spiral auger (8) fitted with a screening rubber cylinder (3) is installed on the auger shaft (7), a cam shaft (9) is rotatably installed on the vibrating screen frame (2), the cam shaft (9) is linked with the screening rubber cylinder (3), a cam plate (10) for driving the screening rubber cylinder (3) to deform is installed on the cam shaft (9), and two reset rollers (11) are rotatably installed on the inner wall of the vibrating screen frame (2) and corresponding to the position inside the screening rubber cylinder (3), and the two reset rollers (11) are both fitted with the screening rubber cylinder (3).

2. The large-flow raw grain cleaning sieve with a rotary vibration mechanism according to claim 1, characterized in that: Each of the bidirectional elastic limiting members comprises a slide groove opened on the frame (1); the inner wall of the slide groove is slidably connected to an elastic seat (12); an axial spring (13) limited by the frame (1) is installed on the side of the elastic seat (12); the inner wall of the elastic seat (12) is slidably connected to a T-shaped guide rod; the bottom end of the T-shaped suspension rod (14) is fixedly connected to the vibrating screen frame (2); and a longitudinal spring (15) limited by the elastic seat (12) is sleeved on the T-shaped suspension rod (14).

3. The large-flow raw grain cleaning sieve with a vibration-rotation mechanism according to claim 2, characterized in that: The rotary vibration generating mechanism comprises a motor (16) mounted on a frame (1), a square shaft (17) mounted on an output shaft end of the motor (16), an upper belt pulley (18) and a lower belt pulley (19) rotatably mounted on the frame (1), a vertical vibration frame (20) slidably connected to the frame (1), and a longitudinal rotation sleeve (21) and a transverse rotation sleeve (22) rotatably mounted on the vertical vibration frame (20), the square shaft (17) and the upper belt pulley (18) are both mounted with first bevel teeth, the two first bevel teeth are meshed with each other, the upper belt pulley (18) is connected to the lower belt pulley (19) by a first belt, and the first bevel teeth are meshed with each other. The first semicircular gear (23) is installed on the lower pulley (19), and the vertical vibration frame (20) is installed with a vertical tooth plate (24). The first semicircular gear (23) is connected to the vertical tooth plate (24). The longitudinal rotating sleeve (21) is driven by the square shaft (17). The longitudinal rotating sleeve (21) and the transverse rotating sleeve (22) are both installed with second bevel teeth. The two second bevel teeth are meshed with each other. The shifting shaft (4) is driven by the transverse rotating sleeve (22). A reciprocating drive module is installed between the vertical vibration frame (20) and the transverse vibration frame.

4. The large-flow raw grain cleaning sieve with a rotary vibration mechanism according to claim 3, characterized in that: Inside the longitudinal rotation sleeve (21), a first empty slot with an open top and slidably connected to the square shaft (17) is fixedly provided. A linkage section (36) is provided on the moving shaft (4). Inside the transverse rotation sleeve (22), a second empty slot with both ends open and slidably connected to the linkage section (36) is fixedly provided. The cross-sections of the first empty slot, the second empty slot, the linkage section (36), and the square shaft (17) are all regular polygons.

5. The large-flow raw grain cleaning sieve with a vibration-rotation mechanism according to claim 4, characterized in that: The reciprocating drive module includes a main pulley (25) and a secondary pulley (26) rotatably connected to the vertical vibration frame (20). The main pulley (25) is drivingly connected to the secondary pulley (26) through a second belt. A third bevel gear is installed on the main pulley (25), and the third bevel gear is drivingly connected to the second bevel gear on the transverse rotation sleeve (22). A flat toothed plate (27) is installed on the vibrating screen frame (2). A second semi-circular gear (28) drivingly connected to the flat toothed plate (27) is installed on the secondary pulley (26).

6. The large-flow raw grain cleaning sieve with a rotary vibration mechanism according to claim 3, characterized in that: The rotary vibration generating mechanism further includes a coupling shaft (29) rotatably installed on the vibrating screen frame (2). The coupling shaft (29) is drivingly connected to the moving shaft (4) through a third belt. Tooth rings (30) are installed on both the coupling shaft (29) and the screening rubber cylinder (3), and the two tooth rings (30) mesh with each other.

7. The large-flow raw grain cleaning sieve with a vibration-rotation mechanism according to claim 1, wherein: The screening area (5) is made of rubber material. Multiple groups of screening holes arranged in a circular array are provided on the screening area (5). The screening area (5) is a hollow cylindrical structure with both ends open.

8. The large-flow raw grain cleaning sieve with a rotary vibration mechanism according to claim 1, characterized in that: The differential module includes a differential shaft (31) rotatably connected to the grain filling box (6). First gears (32) are installed on both the differential shaft (31) and the moving shaft (4), and the two first gears (32) mesh with each other. Second gears (33) are installed on both the differential shaft (31) and the auger shaft (7), and the two second gears (33) mesh with each other. The rotation axis of the auger shaft (7) is directly below the rotation axis of the moving shaft (4), and the rotation axis of the moving shaft (4) is on the same straight line as the rotation axis of the screening rubber cylinder (3).

9. The large-flow raw grain cleaning sieve with a rotary vibration mechanism according to claim 1, characterized in that: An external gear (34) is installed on the camshaft (9), and the external gear (34) is drivingly connected to the tooth ring (30) on the screening rubber cylinder (3).

10. The large-flow raw grain cleaning sieve with a rotary vibration mechanism according to claim 1, characterized in that: A set of casters (35) is installed on the bottom surface of the frame (1).

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