Soybean breeding impurity removal device

By designing a soybean breeding and impurity removal device that utilizes filter mesh and mechanical structure, the problem of impurities flying in the prior art is solved, and a more efficient and uniform impurity removal effect is achieved, and environmental pollution and equipment costs are reduced.

CN120133133AInactive Publication Date: 2025-06-13黑龙江省农业科学院黑河分院
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Patent Information

Application Number
CN202510355630.9
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-03-25
Publication Date
2025-06-13
Estimated Expiration
Not applicable · inactive patent

AI Technical Summary

Technical Problem

In the prior art, when soybeans are removed through wind selection, impurities will fly everywhere, affecting the removal effect and causing pollution to the environment.

Method used

A soybean breeding and impurity removal device is designed. Using the filter mesh and mechanical structure, the soybeans and impurities are rolled repeatedly on the filter mesh through the movement of the cleaning brush and scraper. The design of the filter mesh keeps soybeans above the filter mesh and impurities fall below, thereby realizing impurity removal.

Benefits of technology

It improves the comprehensiveness and uniformity of the removal of impurities, reduces the situation of flying impurities, reduces the pollution to the environment, and reduces the manufacturing cost and operation difficulty of the equipment.

✦ Generated by Eureka AI based on patent content.

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Abstract

The invention relates to the technical field of agricultural planting, in particular to a soybean breeding impurity removal device which comprises a controller and an impurity removal box, and the side wall of the impurity removal box is fixedly communicated with a feeding box; a driving part is fixedly connected to the top of the impurity removal box, and a rotating shaft is fixedly connected to an output shaft of the driving part and rotationally matched with the inner top wall of the impurity removal box; the bottom of the rotating shaft is coaxially and fixedly connected with a main gear, the bottom of the main gear is rotationally matched with a supporting plate, and the side wall of the supporting plate is fixedly connected with the inner side wall of the impurity removing box. Secondary gears are symmetrically meshed with the two sides of the main gear; the auxiliary gears are coaxially and fixedly connected with center rods, and the lower ends of the center rods penetrate through the supporting plate and are coaxially and fixedly connected with arc-shaped teeth. Toothed plates are in sliding fit with the bottoms of the supporting plates. The arc-shaped teeth are meshed with the toothed plate; the bottoms of the arc-shaped teeth are coaxially and fixedly connected with scraping plates; the bottom of the toothed plate is fixedly connected with a cleaning brush; a filter screen is fixedly connected in the impurity removal box and is positioned below the scraper blade and the cleaning brush; the soybean impurity removing device is complete in structure and capable of improving the soybean impurity removing effect.
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Description

Technical Field

[0001] The invention relates to the technical field of agricultural planting, and in particular to a soybean breeding and weed removal device. Background Art

[0002] With the continuous advancement of agricultural technology, agricultural mechanization has become an important feature of modern agriculture. In the soybean breeding process, in order to improve production efficiency and seed quality, weed removal devices, as an important part of mechanized equipment, have been widely used and developed. Through mechanized operation, these devices can achieve efficient and rapid weed removal of soybean seeds, thus meeting the needs of modern agricultural production.

[0003] In the prior art, an air separation device is often used to remove impurities from soybeans. Soybeans are often heavier than impurities. The impurities in the soybeans are removed by blowing air, thereby achieving the soybean impurity removal function. However, in the prior art, when impurities are blown away by air separation, the impurities will fly everywhere, thereby affecting the impurity removal effect and causing pollution to the environment.

[0004] In summary, how to solve the problem in the prior art that when impurities are blown away by wind selection, impurities will fly everywhere, thereby affecting the impurity removal effect and causing environmental pollution has become a difficult problem that needs to be solved urgently in the current field. Therefore, it is necessary to propose a more reasonable soybean breeding impurity removal device. Summary of the invention

[0005] In order to solve the above problems, the present invention provides a soybean breeding impurity removal device, which utilizes the characteristic that the volume of soybeans is often larger than the volume of impurities. The soybeans and impurities are repeatedly moved on the filter, so that the impurities fall under the filter and the soybeans are retained above the filter, thereby removing impurities from the soybeans. At the same time, through the design mainly based on mechanical structure, the use of airflow is reduced, thereby reducing the flying of impurities.

[0006] In order to achieve the above-mentioned purpose, the technical scheme of the present invention is as follows: a soybean breeding impurity removal device comprises a controller and an impurity removal box, wherein the side wall of the impurity removal box is fixedly connected to a feeding box; a driving member is fixedly connected to the top of the impurity removal box, and the output shaft of the driving member is fixedly connected to a rotating shaft, and the rotating shaft is rotatably matched with the top wall of the impurity removal box; a main gear is coaxially fixedly connected to the bottom of the rotating shaft, and a support plate is rotatably matched at the bottom of the main gear, and the side wall of the support plate is fixedly connected to the inner side wall of the impurity removal box; sub-gears are symmetrically meshed on both sides of the main gear; the sub-gears are coaxially fixedly connected to a center rod, and the lower ends of the center rods pass through the support plate and are coaxially fixedly connected to arc-shaped teeth; a tooth plate is slidably matched at the bottom of the support plate; the arc-shaped teeth are meshed with the tooth plate; the bottom of the arc-shaped teeth are coaxially fixedly connected to a scraper; a cleaning brush is fixedly connected to the bottom of the tooth plate; a filter screen is fixedly connected in the impurity removal box, and the filter screen is located below the scraper and the cleaning brush; the controller is used to control the operation of the driving member, thereby driving the rotating shaft and the main gear to rotate.

[0007] The technical principle of the above solution is as follows:

[0008] The drive is started by the controller, and the drive drives the rotating shaft and the main gear to rotate. The main gear drives the secondary gear to rotate. The secondary gear drives the central rod to rotate, and the central rod drives the arc-shaped teeth to rotate. One of the arc-shaped teeth drives the toothed plate to slide horizontally along the bottom of the support plate. When the arc-shaped tooth rotates 180°, the arc-shaped tooth separates from the toothed plate, and another arc-shaped tooth meshes with the toothed plate and drives the toothed plate to slide in the opposite direction, thereby driving the cleaning brush to reciprocally clean the soybeans on the filter screen and removing the impurities on the surface of the soybeans. At the same time, the arc-shaped teeth also drive the scraper to rotate, stirring the soybeans on the filter screen evenly, so that the positions of the soybeans and the impurities are constantly changed.

[0009] The above solution has the following beneficial effects:

[0010] 1. The present invention utilizes the reciprocating movement of the cleaning brush to repeatedly clean the soybeans on the filter screen, thereby removing the impurities attached to the surface of the soybeans. Then, the rotation of the scraper evenly stirs the soybeans, so that all soybeans can be cleaned by the cleaning brush, thereby improving the comprehensiveness and uniformity of impurity removal. At the same time, the movement of the cleaning brush and the scraper drives the soybeans and impurities to continuously roll on the filter screen. Compared with the impurities, the soybeans are larger in volume. Therefore, by designing the size of the filter screen, the soybeans cannot pass through the filter screen, but the impurities will fall below the filter screen during the rolling process, thereby realizing the impurity removal work of the soybeans. The present invention is mainly based on a mechanical structure, which is different from the air separation device in the prior art and can effectively reduce the situation of impurity flying.

[0011] 2. In the present invention, the movement of the cleaning brush and the rotation of the scraper can be carried out together only by relying on one drive, which greatly reduces the manufacturing cost of the equipment and also reduces the operation difficulty of the equipment.

[0012] 3. In the present invention, when the cleaning brush moves once, the scraper rotates one week. Such a design enables the scraper to push the soybeans completed by each cleaning to other positions and push the soybeans not yet cleaned under the cleaning brush after the cleaning brush finishes cleaning a pile of soybeans each time, thereby effectively improving the comprehensiveness and uniformity of cleaning.

[0013] Furthermore, piston frames are symmetrically and fixedly connected to the outer side walls of the impurity removal box; piston plates are horizontally and slidably fitted within the piston frames. One side of each piston plate is fixedly connected to a piston rod, and the ends of the piston rods remote from the piston plates are fixedly connected to a toothed plate; ventilation pipes are connected to the sides of the piston frames remote from the impurity removal box; the other ends of the ventilation pipes are connected to the impurity removal box, and the connection points are respectively connected to a first one-way valve for inputting gas into the impurity removal box and a second one-way valve for discharging impurities from the impurity removal box; a collection box is connected to the ventilation pipe near the second one-way valve; a third one-way valve for sucking in external gas is connected to the ventilation pipe on the side near the first one-way valve.

[0014] Beneficial effects: When the toothed plate reciprocates, the toothed plate will push the piston rod to move, and then push the piston plate to slide horizontally within the piston frame; when the piston plate slides away from the side of the piston rod, the piston plate pumps the gas within the piston frame into the impurity removal box through the ventilation pipe, thereby purging the impurities in the soybeans; when the piston plate slides towards the side of the piston rod, the impurities in the impurity removal box will be sucked into the ventilation pipe, thereby adsorbing the impurities in the soybeans; through the design of the first one-way valve and the second one-way valve, one side of the ventilation pipe is responsible for purging, and the other side of the ventilation pipe is responsible for adsorption. The impurities in the impurity removal box will regularly enter the ventilation pipe from the second one-way valve and then enter the collection box for collection; this avoids the irregular flying of impurities. When the left piston plate moves to the right, it will suck in external gas into the left piston frame through the third one-way valve, thereby ensuring the normal sliding of the piston plate.

[0015] Furthermore, fan blades are fixedly connected to the side wall of the rotating shaft along its circumference; a purging pipe is connected to the upper side wall of the impurity removal box; the other end of the purging pipe is connected to the lower part of the impurity removal box, and the connection point is connected to a control valve; the controller is used to control the operation of the control valve.

[0016] Beneficial effects: When the rotating shaft rotates, the fan blades will rotate together with the rotating shaft, thereby generating an air flow sufficient to blow the soybeans to roll; after the impurity removal is completed, the operator can open the control valve through the controller, and this air flow will then pass through the purging pipe and the control valve into the impurity removal box to purge the soybeans; such a design facilitates the subsequent automatic output of soybeans by the device.

[0017] Furthermore, an opening is provided on the side wall of the impurity removal box, and a sealing cover plate is hinged at the opening.

[0018] Beneficial effects: After the impurity removal of the soybeans is completed, the user only needs to open the sealing cover plate, align a sack or other loading object with the opening, and open the control valve. Then, the soybeans will automatically roll into the sack or other loading object under the purging action of the air flow, and the sack will also automatically expand under the purging action of the air flow, facilitating the flow and loading of the soybeans; when the equipment needs to be maintained, the sealing cover plate can also be opened to directly maintain the equipment, making the maintenance process more convenient.

[0019] Furthermore, a conical frame is fixedly connected to the top of the feeding box.

[0020] Beneficial effects: When filling soybeans, the conical frame can increase the feeding range of soybeans and improve the filling efficiency.

[0021] Furthermore, a protective shell for protecting the driving part is fixedly connected to the top of the impurity removal box.

[0022] Beneficial effects: The protective shell can isolate and protect the driving part, improving the safety of the device.

[0023] Furthermore, the scraping plate is arc-shaped.

[0024] Beneficial effects: Compared with a straight scraping plate, the arc-shaped scraping plate has a larger acting area, can stir more soybeans, and improves the impurity removal efficiency.

[0025] Furthermore, a protective layer is fixedly connected to the scraping plate.

[0026] Beneficial effects: The protective layer can prevent the scraping plate from having a hard collision with soybeans and avoid damage to the soybeans.

[0027] Furthermore, the bottom of the feeding box is inclined.

[0028] Beneficial effects: The inclined bottom of the feeding box can guide the soybeans, making the soybeans flow into the impurity removal box more smoothly and improving the filling efficiency.

[0029] Furthermore, a hinge plate is hinged at the connection between the feeding box and the impurity removal box.

[0030] Beneficial effects: When filling soybeans, due to the impact of the soybeans, the hinge plate will rotate into the impurity removal box; when the filling of soybeans is completed, due to the gravity of the hinge plate itself, the hinge plate will return to its original position, keeping the impurity removal box closed and preventing flying impurities from flowing out of the feeding box.

[0031] The additional aspects and advantages of the present invention will be partially given in the following description, partially become apparent from the following description, or be understood through the practice of the present invention. Description of the Drawings

[0032] Figure 1 It is a front sectional view of the soybean breeding impurity removal device of the present invention.

[0033] Figure 2 It is a side sectional view of the soybean breeding impurity removal device of the present invention.

[0034] Figure 3 It is a bottom-up axonometric view of the support plate in the soybean breeding impurity removal device of the present invention.

[0035] Figure 4 It is a top-down axonometric view of the support plate in the soybean breeding impurity removal device of the present invention.

[0036] The reference numerals in the accompanying drawings of the specification include: 1. impurity removal box; 2. feeding box; 3. rotating shaft; 4. main gear; 5. support plate; 6. sub-gear; 7. central rod; 8. arc-shaped teeth; 9. toothed plate; 10. scraper; 11. cleaning brush; 12. filter screen; 13. piston frame; 14. piston plate; 15. piston rod; 16. ventilation pipe; 17. first one-way valve; 18. second one-way valve; 19. collection box; 20. fan blade; 21. purging pipe; 22. control valve; 23. conical frame; 24. protective shell; 25. hinge plate; 26. reduction motor; 27. third one-way valve. Specific Embodiment

[0037] The following is a further detailed description through specific embodiments:

[0038] Embodiment 1:

[0039] As shown in the attached Figures 1-4 figures: A soybean breeding impurity removal device includes a controller and an impurity removal box 1. The side wall of the impurity removal box 1 is welded and communicated with a feeding box 2; a driving member is bolted and fixed to the top of the impurity removal box 1, and the output shaft of the driving member is bolted and fixed to a rotating shaft 3, and the rotating shaft 3 is rotationally matched with the inner top wall of the impurity removal box 1; a main gear 4 is coaxially bolted and fixed to the bottom of the rotating shaft 3, the bottom of the main gear 4 is rotationally matched with a support plate 5, and the side wall of the support plate 5 is welded to the inner side wall of the impurity removal box 1; two sub-gears 6 are symmetrically meshed on both sides of the main gear 4; the sub-gears 6 are both coaxially bolted and fixed to a central rod 7, and the lower ends of the central rods 7 both penetrate through the support plate 5 and are coaxially bolted and fixed to arc-shaped teeth 8; a toothed plate 9 is slidably matched with the bottom of the support plate 5; the arc-shaped teeth 8 are both meshed with the toothed plate 9; scraper 10 is coaxially bolted and fixed to the bottom of each arc-shaped tooth 8; a cleaning brush 11 is bolted and fixed to the bottom of the toothed plate 9; a filter screen 12 is fixedly adhered inside the impurity removal box 1, and the filter screen 12 is located below the scraper 10 and the cleaning brush 11; the controller is used to control the operation of the driving member, thereby driving the rotation of the rotating shaft 3 and the main gear 4.

[0040] As Figure 2 shown, piston frames 13 are symmetrically welded to the outer side wall of the impurity removal box 1; piston plates 14 are both horizontally slidably matched inside the piston frames 13, piston rods 15 are welded to one side of each piston plate 14, and the ends of the piston rods 15 away from the piston plates 14 are both bolted and fixed to the toothed plate 9; ventilation pipes 16 are communicated with the sides of the piston frames 13 away from the impurity removal box 1; the other ends of the ventilation pipes 16 are both communicated with the impurity removal box 1, and the communication parts are respectively communicated with a first one-way valve 17 for inputting gas into the impurity removal box 1 and a second one-way valve 18 for discharging impurities in the impurity removal box 1; the ventilation pipe 16 near the second one-way valve 18 is communicated with a collection box 19.

[0041] As Figure 1As shown, a fan blade 20 is welded to the side wall of the rotating shaft 3 along its circumferential direction, and a purging pipeline 21 communicates with the upper side wall of the impurity removal box 1; the lower end of the purging pipeline 21 communicates with the lower part of the impurity removal box 1, and a control valve 22 is communicated at the connection; the controller is used to control the operation of the control valve 22.

[0042] An opening is formed in the side wall of the impurity removal box 1, and a sealing cover plate (not shown in the figure) is hinged at the opening.

[0043] As Figure 3 shown, the scraper 10 is arc-shaped. Compared with the straight scraper 10, the arc-shaped scraper 10 has a larger acting area, can stir more soybeans, and improves the impurity removal efficiency.

[0044] In this embodiment, the driving member is selected as the reduction motor 26.

[0045] The specific implementation process is as follows:

[0046] First, the operator fills the un-cleaned soybeans into the impurity removal box 1 through the feeding box 2.

[0047] Taking Figure 4 as an example, after the soybeans are filled, the reduction motor 26 is started through the controller. The reduction motor 26 drives the rotating shaft 3 and the main gear 4 to rotate, and the main gear 4 drives the auxiliary gear 6 to rotate; the auxiliary gear 6 will drive the central rod 7 to rotate, and the central rod 7 drives the arc-shaped tooth 8 to rotate; taking Figure 3 as an example, at this time, one of the arc-shaped teeth 8 drives the toothed plate 9 to slide horizontally along the bottom of the support plate 5. When the arc-shaped tooth 8 rotates 180°, the arc-shaped tooth 8 is separated from the toothed plate 9, and another arc-shaped tooth 8 immediately meshes with the toothed plate 9 and drives the toothed plate 9 to slide in the opposite direction, thereby driving the cleaning brush 11 to reciprocally clean the soybeans on the filter screen 12 and cleaning the impurities on the surface of the soybeans; at the same time, the arc-shaped tooth 8 also drives the scraper 10 to rotate, stirring the soybeans on the filter screen 12 evenly, so that the positions of the soybeans and the impurities are constantly changed, thereby better filtering the impurities.

[0048] As Figure 3 shown, when the arc-shaped tooth 8 rotates one week, the toothed plate 9 reciprocates once; when the scraper 10 rotates one week, the cleaning brush 11 reciprocates once; such a design enables the cleaning brush 11 to push the soybeans cleaned each time to other positions after each cleaning, and push the soybeans not yet cleaned to below the cleaning brush 11, thereby effectively improving the comprehensiveness and uniformity of the cleaning.

[0049] Taking Figure 2For example, when the toothed plate 9 reciprocates, the toothed plate 9 will push the piston rod 15 to move, and then push the piston plate 14 to slide horizontally within the piston frame 13. When the piston plate 14 slides to the left, the left piston plate 14 will pump the gas in the left piston frame 13 into the impurity removal box 1 through the left ventilation pipe 16 and the first one-way valve 17, so as to purge the impurities in the soybeans. At the same time, the right piston plate 14 will slide to the left, and will suck the impurities in the impurity removal box 1 into the right ventilation pipe 16 through the second one-way valve 18, so as to adsorb the impurities, and the impurities will enter the collection box 19 under the action of gravity. Through the design of the first one-way valve 17 and the second one-way valve 18, the left ventilation pipe 16 is responsible for purging impurities, the right ventilation pipe 16 is responsible for adsorbing impurities, and the impurities in the impurity removal box 1 will regularly enter the right ventilation pipe 16 from the second one-way valve 18 and then enter the collection box 19 for collection, avoiding the irregular flying of impurities. The left ventilation pipe 16 is connected with a third one-way valve 27. When the left piston plate 14 moves to the right, it will suck the external gas into the left piston frame 13 through the third one-way valve 27, thereby ensuring the normal sliding of the piston plate 14. At the same time, due to the action of the first one-way valve 17 and the second one-way valve 18, the air flow inside the impurity removal box 1 will remain stable, avoiding affecting the impurity removal work.

[0050] For Figure 1 example, when the rotating shaft 3 rotates, the fan blade 20 will rotate together with the rotating shaft 3, thereby generating an air flow sufficient to blow the soybeans to roll. After the impurity removal of the soybeans is completed, the user only needs to open the sealing cover plate, align the loading of the soybeans (a gunny bag is selected in this embodiment) with the opening, and open the control valve 22. Then the soybeans will automatically roll into the gunny bag under the purging action of the air flow, and the gunny bag will also automatically expand under the purging action of the air flow, facilitating the flow and loading of the soybeans. When the equipment needs to be maintained, the sealing cover plate can also be opened to directly maintain the equipment, making the maintenance process more convenient.

[0051] In this embodiment, the reciprocating movement of the cleaning brush 11 is utilized to repeatedly clean the soybeans on the filter screen 12, so as to remove the impurities attached to the surface of the soybeans. Then, the rotation of the scraping plate 10 is used to evenly stir the soybeans, so that all the soybeans can be cleaned by the cleaning brush 11, thereby improving the comprehensiveness and uniformity of the impurity removal of the device. At the same time, through the movement of the cleaning brush 11 and the scraping plate 10, the soybeans and impurities are driven to continuously roll on the filter screen 12. Compared with the impurities, the soybeans are larger in volume. Therefore, the soybeans cannot pass through the filter screen 12, but the impurities will fall below the filter screen 12 during the rolling process, thereby realizing the impurity removal work of the soybeans. Compared with the impurity removal devices in the prior art, this embodiment mainly uses a mechanical structure and is assisted by a regularly flowing gas, which can effectively reduce the situation of impurity flying.

[0052] Embodiment 2:

[0053] As shown in the appendix Figure 1 As shown, different from the above embodiments, a conical frame 23 is welded and communicated at the top of the feeding box 2.

[0054] The specific implementation process is as follows: When loading soybeans, the conical frame 23 can increase the feeding range of soybeans and improve the loading efficiency.

[0055] Embodiment 3:

[0056] As shown in the appendix Figures 1-2 As shown, different from the above embodiments, a protective shell 24 for protecting the reduction motor 26 is fixedly connected to the top of the impurity removal box 1 by bolts.

[0057] The specific implementation process is as follows: The protective shell 24 can isolate and protect the reduction motor 26, improving the safety of the device.

[0058] Embodiment 4:

[0059] As shown in the appendix Figures 1-3 As shown, different from the above embodiments, a protective layer is fixedly adhered to the scraper 10.

[0060] The specific implementation process is as follows: The protective layer can prevent the scraper 10 from having a hard collision with soybeans and avoid damage to the soybeans.

[0061] Embodiment 5:

[0062] As shown in the appendix Figure 1 As shown, different from the above embodiments, the bottom of the feeding box 2 is inclined, and a hinge plate 25 is hinged at the connection between the feeding box 2 and the impurity removal box 1.

[0063] The specific implementation process is as follows: The inclined bottom of the feeding box 2 can guide the soybeans, making the soybeans flow into the impurity removal box 1 more smoothly and improving the loading efficiency. When loading soybeans, the inclined feeding box 2 will cause the soybeans to have a certain impact force. Under the impact of the soybeans, the hinge plate 25 will rotate into the impurity removal box 1; when the soybean loading is completed, due to the gravity of the hinge plate 25 itself, the hinge plate 25 will return to its original position to keep the impurity removal box 1 closed and prevent flying impurities from flowing out of the feeding box 2.

[0064] Obviously, the above embodiments are only examples given clearly and are not limitations on the implementation manners. For those of ordinary skill in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation manners here. And the obvious changes or modifications derived therefrom are still within the protection scope of the present invention.

Claims

1. A soybean breeding impurity removal device, characterized in that: The utility model comprises a controller and a dust removal box (1), wherein the side wall of the dust removal box (1) is fixedly connected to a feeding box (2); a driving member is fixedly connected to the top of the dust removal box (1), and the output shaft of the driving member is fixedly connected to a rotating shaft (3), and the rotating shaft (3) is rotatably matched with the top wall of the dust removal box (1); a main gear (4) is coaxially fixedly connected to the bottom of the rotating shaft (3), and a support plate (5) is rotatably matched to the bottom of the main gear (4), and the side wall of the support plate (5) is fixedly connected to the inner side wall of the dust removal box (1); two sides of the main gear (4) are symmetrically meshed with auxiliary gears (6); and the auxiliary gears (6) are coaxially fixedly connected to a center rod. (7), the lower end of the center rod (7) passes through the support plate (5) and is coaxially fixedly connected with an arc-shaped tooth (8); the bottom of the support plate (5) is slidably matched with a tooth plate (9); the arc-shaped teeth (8) are meshed with the tooth plate (9); the bottom of the arc-shaped teeth (8) is coaxially fixedly connected with a scraper (10); the bottom of the tooth plate (9) is fixedly connected with a cleaning brush (11); a filter screen (12) is fixedly connected inside the debris removal box (1), and the filter screen (12) is located below the scraper (10) and the cleaning brush (11); the controller is used to control the operation of the driving member, thereby driving the rotating shaft (3) and the main gear (4) to rotate.

2. The soybean breeding impurity removal device according to claim 1, characterized in that: The outer wall of the impurity removal box (1) is symmetrically fixedly connected with a piston frame (13); a piston plate (14) is slidably fitted in the piston frame (13) in a transverse direction, a piston rod (15) is fixedly connected to one side of the piston plate (14), and one end of the piston rod (15) away from the piston plate (14) is fixedly connected to the tooth plate (9); a ventilation pipe (16) is connected to the side of the piston frame (13) away from the impurity removal box (1); the other end of the ventilation pipe (16) is connected to the impurity removal box (1), and the connection point is respectively connected to a first one-way valve (17) for inputting gas into the impurity removal box (1) and a second one-way valve (18) for discharging impurities in the impurity removal box (1); the ventilation pipe (16) close to the second one-way valve (18) is connected to a collection box (19); the ventilation pipe (16) close to the first one-way valve (17) is connected to a third one-way valve (27) for sucking external air.

3. The soybean breeding impurity removal device according to claim 2, characterized in that: The side wall of the rotating shaft (3) is fixedly connected with a fan blade (20) along its circumferential direction; the upper side wall of the impurity removal box (1) is connected with a purge pipe (21); the other end of the purge pipe (21) is connected with the lower part of the impurity removal box (1), and the connection point is connected with a control valve (22); the controller is used to control the operation of the control valve (22).

4. The soybean breeding impurity removal device according to claim 3, characterized in that: The side wall of the impurity removal box (1) is provided with an opening, and a sealing cover plate is hingedly connected to the opening.

5. The soybean breeding impurity removal device according to claim 4, characterized in that: The top of the feeding box (2) is fixedly connected with a conical frame (23).

6. The soybean breeding impurity removal device according to claim 5, characterized in that: A protective shell (24) for protecting the driving member is fixedly connected to the top of the debris removal box (1).

7. The soybean breeding impurity removal device according to claim 6, characterized in that: The scraper (10) is arc-shaped.

8. The soybean breeding impurity removal device according to claim 7, characterized in that: A protective layer is fixedly connected to the scraper (10).

9. The soybean breeding impurity removal device according to claim 8, characterized in that: The bottom of the feeding box (2) is arranged in an inclined manner.

10. The soybean breeding impurity removal device according to claim 9, characterized in that: A hinge plate (25) is hingedly connected at the connection point between the feeding box (2) and the impurity removal box (1).