CN220092147U - Efficient and stable wheat vibration screening machine - Google Patents

Abstract

The utility model belongs to the technical field of vibration screening, in particular to a high-efficiency stable wheat vibration screening machine, which comprises a supporting frame, wherein a screening machine main body is fixedly arranged on the inner wall of the top of the supporting frame, bases are fixedly arranged at four corners of the bottom of the supporting frame, discharge grooves are formed in the right sides of the supporting frame and the screening machine main body, a discharge device is arranged at the bottom of the screening machine main body, and vibration force only acts on the upper part of a screen through a vibration component, so that the screening machine main body and the supporting frame are not in a vibration state, the noise of the machine is reduced, the connection of the internal structure of the screening machine main body is not easy to loosen, and the service life of the machine is prolonged; through the continuous rotation of baffle, make the top pile up the wheat that descends and rotate in the baffle top to make piled up wheat scatter, make the impurity that mixes in the wheat easily blow into the dust bin inside by the windstream, make the wheat need not screen once more, promote work efficiency and make the difficult waste of electric power energy.

Description

Efficient and stable wheat vibration screening machine

Technical Field

The utility model relates to the technical field of vibration screening, in particular to a high-efficiency stable wheat vibration screening machine.

Background

The wheat is a main food for people in most areas of China, qualified wheat products need to be carefully screened, after the wheat is harvested from a farmland, some impurities are doped during harvesting, impurities on the wheat need to be removed before the wheat is processed and put in storage, if the impurities are not removed, the quality of the wheat is possibly reduced, and in the process of vibration screening the wheat to remove the impurities, a high-efficiency and stable wheat vibration screening machine is needed to screen the wheat and remove the impurities;

the utility model discloses a high-efficient stable wheat vibration screening machine, including the screening machine body, screening machine body inner chamber top corner position all is equipped with the pendant, the pendant includes the mounting, the mounting bottom is connected with the backup pad, backup pad bottom fixedly connected with spring connector, spring connector bottom is connected with the support frame, the support frame inner chamber is equipped with the screening net, just the screening net is the slope setting, screening net bottom one side all is equipped with the conveyer pipe, the screening net below is equipped with vibrating motor, just vibrating motor and support frame fixed connection, support frame one side is equipped with the collecting pipe, and conveyer pipe one end inserts in the collecting pipe, the support frame below is equipped with the baffle, install the hopper on the baffle, the hopper bottom is connected with the material pipe, be connected with the tuber pipe on the material pipe;

when the screening machine is used, two problems may exist, one vibrating motor is directly connected with the screening machine main body, and the screening machine main body vibrates to screen wheat, so that noise is large in the screening process, the power of the vibrating motor is large, the internal components of the screening machine main body are easy to loosen in the vibration process, and the internal components are not tight enough, so that the service life of the screening machine is reduced; secondly, in the cleaning of smaller impurities in the wheat, as the discharging device is funnel-shaped, the wheat is easy to accumulate when descending, so that the impurities doped in the wheat cannot be blown to the dust box by the air pipe, the wheat is required to be screened again, the working efficiency is reduced, and the electric energy is easy to waste, and therefore, the wheat vibration screening machine is high-efficient and stable.

Disclosure of Invention

The utility model aims to solve the defects in the prior art, and provides a high-efficiency stable wheat vibrating screening machine.

In order to achieve the above purpose, the present utility model adopts the following technical scheme:

the utility model provides a high-efficient stable wheat vibration screening machine, includes braced frame, braced frame's top inner wall fixed mounting has the screening machine main part, braced frame's bottom four corners fixed mounting has the base, braced frame and screening machine main part's top fixed mounting has feed arrangement, the blown down tank has been seted up on braced frame and screening machine main part's right side, the bottom of screening machine main part is provided with discharging device, the discharge gate has been seted up to braced frame's bottom;

the vibration assembly comprises a motor, a driving shaft, a turntable, a first rotating shaft, a second rotating shaft, a first belt, a second belt, a driven turntable, a connecting rod, a fixed block, a first rotating block, a second rotating block, a screen base, a spring, a sliding chute, a sliding block and a screen, wherein the motor is fixedly arranged on the inner wall of the rear side of a supporting frame, one end of the driving shaft is fixedly arranged at the output end of the motor, the other end of the driving shaft is rotatably arranged on the inner wall of the front side of the supporting frame, the turntable is fixedly arranged on the outer side of the driving shaft, one end of the first rotating shaft is rotatably arranged on the inner wall of the front side of the supporting frame, the other end of the first rotating shaft is rotatably arranged on the inner wall of the rear side of the screening machine main body, the second rotating shaft is rotatably arranged on the inner wall of the front side of the supporting frame and is positioned on the right side of the first rotating shaft, the first belt tensioning is arranged at the outer sides of the driving shaft and the first rotating shaft, the second belt tensioning is arranged at the outer sides of the first rotating shaft and the second rotating shaft, the driven turntable is rotatably arranged at the left and right sides of the front side of the screening machine main body and sequentially arranged from top to bottom, the connecting rod is rotatably arranged between the inner sides of the turntable, the connecting rod is rotatably arranged at one side of the driven turntable, the fixed blocks are fixedly arranged on the inner walls of the left and right sides of the screening machine main body and are arranged from top to bottom, the first rotating blocks are rotatably arranged at the left and right sides of the fixed blocks, the second rotating blocks are rotatably arranged between the inner sides of the first rotating blocks, the bottom of the screen base is provided with grooves, the second rotating blocks are rotatably arranged between the inner sides of the bottom grooves of the screen base, one end of the spring is fixedly arranged at the front and back sides of the bottom of the screen base, the other end fixed mounting of spring is in both sides around the top of fixed block, the spout has been seted up at the top of fixed block, slider fixed mounting is in both sides around the screen cloth base, slider slidable mounting is between the inboard of spout, screen cloth screw thread is installed at the top of screen cloth base.

Through adopting above-mentioned technical scheme, the slider slides inside the spout to inject the direction of motion of screen cloth base, make the screen cloth be difficult for touching the sieve separator main part, the noise reduction, the difficult vibrations that take place of machine, make the internals be difficult for loosening, promote stability.

The dust collection assembly comprises a worm wheel, an air pipe, a worm, fan blades, a baffle and a dust collection box, wherein the worm wheel is fixedly arranged on the outer side of a driving shaft, the air pipe is fixedly arranged on the right side of a discharging device, one end of the worm is rotatably arranged on the left inner wall of a supporting frame and penetrates through the left side of the air pipe to extend to the inner side of the air pipe, the worm wheel is meshed with the worm, the fan blades are fixedly arranged on the outer side of the worm, the baffle is fixedly arranged on the outer side of the second rotating shaft in a circle, and the dust collection box is fixedly arranged on the left side of the discharging device.

Through adopting above-mentioned technical scheme, the baffle makes the wheat that piles up the decline disperse when rotating, and the wheat of dispersion is more easily blown out its inside less impurity by the flabellum, promotes wheat screening effect.

Preferably, the right side of the screen bases of the same column are higher than the left side, and the screen bases of each column are equal in phase difference.

Through adopting above-mentioned technical scheme, when the wheat is screening, great impurity can't pass through the screen cloth, through the screen cloth that the slope set up, great impurity can follow the blown down tank of one side and flow, makes great impurity be difficult for piling up in the screen cloth top.

Preferably, an interception net is arranged at the joint of the air pipe, the dust collecting box and the discharging device, the interception net is fixedly arranged on the inner side of the baffle, and the diameter of small holes on the interception net is smaller than that of wheat.

By adopting the technical scheme, the wheat is blocked by the blocking net, so that smaller impurities in the wheat are blown into the dust box by the fan blades, the screening effect of the wheat is improved, and the collected wheat is cleaner.

Preferably, a protruding block is fixedly arranged on one side of the driven turntable, a through hole is formed in the outer side of the connecting rod, and the outer diameter of the protruding block is the same as the inner diameter of the through hole.

Through adopting above-mentioned technical scheme, when the connecting rod drove driven carousel and rotates, protruding piece can rotate in the through-hole inboard, makes the connecting rod be difficult for the atress torsion to make the machine need not maintain reduction use cost.

Preferably, a third rotating shaft is arranged on one side of the driven rotating disc, a through hole is formed in one side of the fixed block, the third rotating shaft is rotatably mounted between the inner sides of the front through holes, one end of the third rotating shaft is fixedly connected with one side of the foremost first rotating block, adjacent sides of the adjacent first rotating blocks are connected through pin shafts, a fourth rotating shaft is rotatably mounted between the inner sides of the middle through holes, two ends of the fourth rotating shaft are fixedly connected with the adjacent first rotating blocks respectively, a fifth rotating shaft is fixedly mounted on one side of the rearmost first rotating block, and the fifth rotating shaft is rotatably mounted between the inner sides of the rearmost through holes.

Through adopting above-mentioned technical scheme, make the first rotating block of fixed block top rotate simultaneously to make screen cloth base vibration amplitude the same, promote vibration effect, make screening efficiency promote.

Preferably, the first rotating block is in a shape of being narrow at one end and wide at one end, and the second rotating block is rotatably arranged at the narrow part of the first rotating block.

Through adopting above-mentioned technical scheme, narrower one end is farther from the axle center, makes second pivoted piece motion distance longer to make screen cloth base vibrations range great, promote machine screening efficiency.

Compared with the prior art, the utility model has the beneficial effects that:

(1) According to the efficient and stable wheat vibration screening machine, vibration force is only applied to the upper part of the screen through the vibration component, so that the screening machine main body and the supporting frame are not in a vibration state, the noise of the machine is reduced, the internal structure of the screening machine main body is not easy to loosen, and the service life of the machine is prolonged;

(2) According to the efficient and stable wheat vibration screening machine, the baffle is continuously rotated, so that wheat piled and descended above the baffle is rotated, piled wheat is dispersed, impurities doped in the wheat are easily blown into the dust box by wind flow, the wheat is not required to be screened again, and the working efficiency is improved, so that electric energy is not easy to waste.

Drawings

Fig. 1 is a schematic perspective view of a high-efficiency stable wheat vibrating screening machine according to the present utility model;

FIG. 2 is a schematic view of a part of a three-dimensional structure of a high-efficiency stable wheat vibrating screening machine according to the present utility model;

FIG. 3 is a schematic view of a part of a three-dimensional structure of a high-efficiency stable wheat vibrating screening machine according to the present utility model;

fig. 4 is a schematic view of a part of a three-dimensional structure of a high-efficiency stable wheat vibrating screening machine according to the present utility model;

FIG. 5 is an enlarged schematic view of the portion A in FIG. 2;

FIG. 6 is an enlarged schematic view of the portion B in FIG. 3;

FIG. 7 is an enlarged schematic view of the portion C in FIG. 4;

in the figure: 1. a support frame; 2. a screening machine main body; 3. a discharge chute; 4. a discharging device; 5. a motor; 6. a drive shaft; 7. a turntable; 8. a first rotation shaft; 9. a second rotation shaft; 10. a first belt; 11. a second belt; 12. a driven turntable; 13. a connecting rod; 14. a fixed block; 15. a dust collection box; 16. a first rotating block; 17. a second rotating block; 18. a screen base; 19. a spring; 20. a chute; 21. a slide block; 22. a screen; 23. a worm wheel; 24. an air duct; 25. a worm; 26. a fan blade; 27. and a baffle.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments.

Referring to fig. 1-7, a high-efficiency stable wheat vibration screening machine comprises a supporting frame 1, wherein a screening machine main body 2 is fixedly installed on the inner wall of the top of the supporting frame 1, bases are fixedly installed at four corners of the bottom of the supporting frame 1, feeding devices are fixedly installed at the tops of the supporting frame 1 and the screening machine main body 2, discharge grooves 3 are formed in the right sides of the supporting frame 1 and the screening machine main body 2, a discharging device 4 is arranged at the bottom of the screening machine main body 2, and a discharging hole is formed in the bottom of the supporting frame 1; the base heightens the machine, so that the screened wheat can directly flow into a collecting bag below, and larger impurities flow out of the discharge chute 3 during screening, so that the wheat is not easy to accumulate above the screen 22, the machine is required to be closed for manual cleaning, the screening efficiency of the machine is improved,

the vibration assembly comprises a motor 5, a driving shaft 6, a rotary table 7, a first rotating shaft 8, a second rotating shaft 9, a first belt 10, a second belt 11, a driven rotary table 12, a connecting rod 13, a fixed block 14, a first rotating block 16, a second rotating block 17, a screen base 18, a spring 19, a sliding groove 20, a sliding block 21 and a screen 22, wherein the motor 5 is fixedly arranged on the rear side inner wall of the supporting frame 1, one end of the driving shaft 6 is fixedly arranged at the output end of the motor 5, the other end of the driving shaft 6 is rotatably arranged on the front side inner wall of the supporting frame 1, the rotary table 7 is fixedly arranged on the outer side of the driving shaft 6, one end of the first rotating shaft 8 is rotatably arranged on the front side inner wall of the supporting frame 1, the other end of the first rotating shaft 8 is rotatably arranged on the rear side inner wall of the screening machine main body 2, the second rotating shaft 9 is rotatably arranged on the front side inner wall of the supporting frame 1 and is positioned on the right side of the first rotating shaft 8, the first belt 10 is arranged outside the driving shaft 6 and the first rotating shaft 8 in a tensioning manner, the second belt 11 is arranged outside the first rotating shaft 8 and the second rotating shaft 9 in a tensioning manner, the driven turntable 12 is rotatably arranged on the left and right sides of the front side of the screening machine main body 2 and sequentially arranged from top to bottom, the connecting rod 13 is rotatably arranged between the inner sides of the turntable 7, the connecting rod 13 is rotatably arranged on one side of the driven turntable 12, the fixed block 14 is fixedly arranged on the inner walls of the left and right sides of the screening machine main body 2 and is arranged from top to bottom, the first rotating block 16 is rotatably arranged on the left and right sides of the fixed block 14, the second rotating block 17 is rotatably arranged between the inner sides of the first rotating block 16, the bottom of the screen base 18 is provided with a groove, the second rotating block 17 is rotatably arranged between the inner sides of the bottom groove of the screen base 18, one end of the spring 19 is fixedly arranged on the front and rear sides of the bottom of the screen base 18, the other end fixed mounting of spring 19 is in the front and back both sides at the top of fixed block 14, spout 20 has been seted up at the top of fixed block 14, slider 21 fixed mounting is in the front and back both sides of screen cloth base 18, slider 21 slidable mounting is between the inboard of spout 20, screen cloth 22 screw thread is installed at the top of screen cloth base 18, it is to be noted that, drive carousel 7 in both sides through drive shaft 6 and rotate, make screen cloth base 18 the same amplitude above the fixed block 14 vibrate, make screen cloth 22 vibrations effect better, thereby promote the screening efficiency of wheat, slider 21 slides in spout 20 inboard, make screen cloth base 18 inject the position, can only horizontal up-and-down motion, thereby be difficult for taking place to touch with sieve separator main part 2, make the during operation noise less, and the machine is difficult for producing vibrations and thereby make the inside component loose, promote stability, promote machine life.

The dust collection assembly comprises a worm wheel 23, a wind pipe 24, a worm 25, fan blades 26, a baffle 27 and a dust collection box 15, wherein the worm wheel 23 is fixedly arranged on the outer side of a driving shaft 6, the wind pipe 24 is fixedly arranged on the right side of a discharging device 4, one end of the worm 25 is rotatably arranged on the left inner wall of a supporting frame 1 and penetrates through the left side of the wind pipe 24 and extends to the inner side of the wind pipe 24, the worm wheel 23 is meshed with the worm 25, the fan blades 26 are fixedly arranged on the outer side of the worm 25, the baffle 27 is fixedly arranged on the outer side of a second rotating shaft 9 for a circle, the dust collection box 15 is fixedly arranged on the left side of the discharging device 4, the worm wheel 23 can drive the worm 25 to rotate when the worm wheel 23 drives the worm 25 to rotate, the fan blades 26 are blown to the inner side of the dust collection box 15 when smaller impurities are blown, the baffle 27 enables wheat accumulated and lowered above to be separated and the descending speed is delayed, and the collected wheat is more easily blown by the impurities when the wheat is scattered.

In this embodiment, the right sides of the screen bases 18 in the same row are higher than the left sides, and the difference heights of the screen bases 18 in each row are equal, and it is to be noted that the screen 22 is mounted on the screen base 18 to make the left sides of the screen 22 lower, and when the screen 22 vibrates, wheat flows into the discharging device 4 below through the screen 22, but larger impurities cannot flow downwards, and flows out from the discharging tank 3 on the left side through the inclined screen 22, so that larger impurities are not easy to be accumulated above the screen 22, the screening efficiency is improved, and the large impurities above the screen 22 do not need to be manually cleaned.

In this embodiment, the junction of tuber pipe 24 and dust collection box 15 and discharging device 4 is provided with the interception net, and the inboard fixed mounting of baffle 27 has the interception net, and the aperture diameter on the interception net is less than the diameter of wheat, and it should be noted that, the interception net makes the wheat be difficult for getting into the inside of tuber pipe 24 and dust collection box 15, makes less impurity blow into the inside of dust collection box 15 by flabellum 26 to make the screening efficiency of wheat higher, need not many times screening, practice thrift screening time.

In this embodiment, the protruding block is fixedly installed on one side of the driven turntable 12, the through hole is formed in the outer side of the connecting rod 13, the outer diameter of the protruding block is the same as the inner diameter of the through hole, it is to be noted that the through hole in the outer side of the connecting rod 13 drives the protruding block to move, and the protruding block can rotate in the through hole, so that the protruding block can be always stable in the through hole when the connecting rod 13 rotates, and is not easy to deviate, so that the connection is more stable.

In this embodiment, a third rotating shaft is disposed on one side of the driven turntable 12, a through hole is disposed on one side of the fixed block 14, the third rotating shaft is rotatably mounted between the inner sides of the front through hole, one end of the third rotating shaft is fixedly connected with one side of the foremost first rotating block 16, adjacent sides of the adjacent first rotating blocks 16 are connected through a pin shaft, a fourth rotating shaft is rotatably mounted between the inner sides of the middle through hole, two ends of the fourth rotating shaft are fixedly connected with the adjacent first rotating blocks 16 respectively, a fifth rotating shaft is fixedly mounted on one side of the rearmost first rotating block 16, the fifth rotating shaft is rotatably mounted between the inner sides of the rearmost through hole, it is to be noted that when the driven turntable 12 rotates, the third rotating shaft drives the third rotating shaft to rotate, the first rotating block 16 is driven to rotate, thereby enabling the second rotating block 17 to rotate, the fourth rotating shaft is connected with the first rotating blocks 16 to rotate, thereby enabling the plurality of first rotating blocks 16 to simultaneously rotate, driving the second rotating blocks 17 to rotate, and enabling the movement amplitude of the screen base 18 to be the same.

In this embodiment, the first rotating block 16 has a narrow end and a wider end, and the second rotating block 17 is rotatably mounted at the narrower part of the first rotating block 16, and it should be noted that, when the first rotating block 16 rotates, the narrower end is farther from the axis, so that the moving distance of the second rotating block 17 is longer, so that the vibration amplitude of the screen base 18 is larger, and the screening effect of the machine is better.

Specifically, the machine is connected with an external power supply, wheat is conveyed into a feeding device above a supporting frame 1, the wheat falls into one side with higher screen 22, a control motor 5 drives a driving shaft 6 to rotate, the driving shaft 6 drives a rotary table 7 to rotate, the driving shaft 6 drives a first rotating shaft 8 to rotate through a first belt 10, the first rotating shaft 8 drives a second rotating shaft 9 to rotate through a second belt 11, the second rotating shaft 9 drives a rotary table 7 on one side to rotate, the rotary table 7 controls a connecting rod 13 to drive a driven rotary table 12 on the left side to rotate, the driven rotary table 12 drives a third rotating shaft to rotate, the third rotating shaft rotates to drive a first rotating block 16 in a convex groove to rotate, the first rotating block 16 drives a second rotating block 17 connected above to rotate, the second rotating block 17 drives the screen base 18 to reciprocate up and down, the screen base 18 adjusts the stress through two springs 19 arranged below, sliding blocks 21 at the front side and the rear side of the movement of the screen base 18 slide in sliding grooves 20, so that the movement direction of the screen base 18 is fixed, a screen 22 is arranged above the screen base 18 through threads, the screen 22 is driven to vibrate, wheat falls below the screen 22 in vibration, larger impurities in the wheat slide out of a discharge chute 3 at the right side through the obliquely arranged screen 22, meanwhile, a driving shaft 6 drives a worm wheel 23 to rotate, the worm wheel 23 drives a worm 25 to rotate, the worm 25 drives a fan blade 26 to rotate, wind current is generated to blow from a wind pipe 24 to a dust box 15, a first rotating shaft 8 drives a baffle 27 to rotate, the wheat is dispersed by the baffle 27 in the descending process, the wind flow generated by the fan blades 26 causes small foreign substances to be blown into the inside of the dust box 15.

The efficient and stable wheat vibration screening machine provided by the utility model is described in detail above. The principles and embodiments of the present utility model have been described herein with reference to specific examples, which are intended to be merely illustrative of the methods of the present utility model and their core ideas. It should be noted that it will be apparent to those skilled in the art that various modifications and adaptations of the utility model can be made without departing from the principles of the utility model and these modifications and adaptations are intended to be within the scope of the utility model as defined in the following claims.

Claims (6)

1. A high-efficient stable wheat vibration screening machine, its characterized in that includes:

the screening machine comprises a supporting frame (1), wherein a screening machine main body (2) is fixedly arranged on the inner wall of the top of the supporting frame (1), bases are fixedly arranged at four corners of the bottom of the supporting frame (1), feeding devices are fixedly arranged at the tops of the supporting frame (1) and the screening machine main body (2), discharge grooves (3) are formed in the right sides of the supporting frame (1) and the screening machine main body (2), a discharge device (4) is arranged at the bottom of the screening machine main body (2), and a discharge hole is formed in the bottom of the supporting frame (1);

the vibration assembly comprises a motor (5), a driving shaft (6), a rotary table (7), a first rotating shaft (8), a second rotating shaft (9), a first belt (10), a second belt (11), a driven rotary table (12), a connecting rod (13), a fixed block (14), a first rotating block (16), a second rotating block (17), a screen base (18), a spring (19), a sliding groove (20), a sliding block (21) and a screen (22), wherein the motor (5) is fixedly arranged on the inner wall of the rear side of a supporting frame (1), one end of the driving shaft (6) is fixedly arranged at the output end of the motor (5), the other end of the driving shaft (6) is rotatably arranged on the inner wall of the front side of the supporting frame (1), the rotary table (7) is fixedly arranged on the outer side of the driving shaft (6), one end of the first rotating shaft (8) is rotatably arranged on the inner wall of the front side of the supporting frame (1), the other end of the first rotating shaft (8) is rotatably arranged on the inner wall of the rear side of the screening machine main body (2), the second rotating shaft (9) is rotatably arranged on the inner wall of the supporting frame (1) and is arranged on the outer side of the first rotating shaft (10), the second belt (11) is tensioned and arranged on the outer sides of the first rotating shaft (8) and the second rotating shaft (9), the driven rotating disc (12) is rotatably arranged on the left side and the right side of the front side of the screening machine main body (2) and sequentially arranged from top to bottom, the connecting rod (13) is rotatably arranged between the inner sides of the rotating disc (7), the connecting rod (13) is rotatably arranged on one side of the driven rotating disc (12), the fixed block (14) is fixedly arranged on the inner walls of the left side and the right side of the screening machine main body (2) and is arranged from top to bottom, the first rotating block (16) is rotatably arranged on the left side and the right side of the fixed block (14), the second rotating block (17) is rotatably arranged between the inner sides of the first rotating block (16), the bottom of the screen base (18) is provided with grooves, one end of the spring (19) is fixedly arranged on the front side and the rear side of the bottom of the screen base (18), the other end of the spring (19) is fixedly arranged on the front side and the rear side of the screen base (18), the other end (19) is fixedly arranged on the front side of the sliding block (20) of the fixed block (14), the sliding block (20) is fixedly arranged on the front side of the top of the sliding block (20), the screen (22) is arranged on the top of the screen base (18) in a threaded manner;

the dust collection assembly comprises a worm wheel (23), an air pipe (24), a worm (25), a fan blade (26) and a baffle plate (27) and a dust collection box (15), wherein the worm wheel (23) is fixedly installed on the outer side of a driving shaft (6), the air pipe (24) is fixedly installed on the right side of a discharging device (4), one end of the worm (25) is rotatably installed on the left side inner wall of a supporting frame (1) and penetrates through the left side of the air pipe (24) and extends to the inner side of the air pipe (24), the worm wheel (23) is meshed with the worm (25), the fan blade (26) is fixedly installed on the outer side of the worm (25), the baffle plate (27) is fixedly installed on the outer side of a circle of a second rotating shaft (9), and the dust collection box (15) is fixedly installed on the left side of the discharging device (4).

2. An efficient and stable wheat vibration screening machine according to claim 1, characterized in that the right side of the screen bases (18) of the same row are each higher than the left side, the screen bases (18) of each row being equally different in height.

3. The efficient and stable wheat vibration screening machine according to claim 1, wherein an interception net is arranged at the joint of the air pipe (24) and the dust collecting box (15) and the discharging device (4), and the inner side of the baffle plate (27) is fixedly provided with the interception net, and the diameter of small holes on the interception net is smaller than that of wheat.

4. The efficient and stable wheat vibration screening machine according to claim 1, wherein a protruding block is fixedly installed on one side of the driven turntable (12), a through hole is formed in the outer side of the connecting rod (13), and the outer diameter of the protruding block is identical to the inner diameter of the through hole.

5. The efficient and stable wheat vibration screening machine according to claim 1, wherein a third rotating shaft is arranged on one side of the driven turntable (12), a through hole is formed in one side of the fixed block (14), the third rotating shaft is rotatably mounted between the inner sides of the front through holes, one end of the third rotating shaft is fixedly connected with one side of the foremost first rotating block (16), adjacent sides of the adjacent first rotating blocks (16) are connected through pin shafts, a fourth rotating shaft is rotatably mounted between the inner sides of the middle through holes, two ends of the fourth rotating shaft are fixedly connected with the adjacent first rotating blocks (16) respectively, a fifth rotating shaft is fixedly mounted on one side of the rearmost first rotating block (16), and the fifth rotating shaft is rotatably mounted between the inner sides of the rearmost through holes.

6. The efficient and stable wheat vibration screening machine according to claim 1, wherein the first rotating block (16) is shaped such that one end is narrow and the other end is wide, and the second rotating block (17) is rotatably mounted at the narrow portion of the first rotating block (16).