A seed cleaning screen structure

Abstract

The utility model relates to the technical field of seed cleaning, specifically a seed cleaning screen structure, including screening case and open downward screening concave box, screening concave box articulates in screening case left wall, screening concave box inside lower portion is equipped with screen, and screening concave box right side is equipped with swing screening drive assembly, the both sides of screen all have fixed plate, and the both sides of fixed plate all have a plurality of return springs between fixed plate one side and screening case inner wall, the one side of left side fixed plate is fixed with push rod, push rod sliding penetrates out screening concave box left face, and push rod left -end is fixed with the ball that is close to screening case inner wall and hits, the utility model is beneficial to the efficiency of seed screening, guarantees the cleaning effect to seed, can also shake off the impurity that blocks on the screen, effectively delays the screen blockage condition, thereby is beneficial to the service life of screen.

Description

Technical Field

[0001] This utility model relates to the field of seed cleaning technology, specifically to a seed cleaning sieve structure. Background Technology

[0002] Seed cleaning is an important part of agricultural production. It can effectively improve seed purity, reduce the incidence of pests and diseases, and promote crop growth and yield. During the cleaning process, the seeds need to be screened through a sieve to remove impurities.

[0003] In the existing technology, if the sieve is fixed in place during the seed screening process, the seeds are prone to accumulating in the same position, resulting in slow screening speed and affecting the seed cleaning effect. In addition, the existing sieve is prone to clogging, which greatly reduces the service life of the sieve. Utility Model Content

[0004] In view of the shortcomings of the existing technology, this utility model provides a seed cleaning screen structure to solve the problems of poor seed cleaning effect and easy clogging of the screen.

[0005] To achieve the above objectives, this utility model is implemented through the following technical solution: a seed cleaning screen structure, including a screening box and a screening concave box with the opening facing downward, wherein the screening concave box is hinged to the left wall of the screening box;

[0006] The lower part of the screening concave box is provided with a screen, and the right side of the screening concave box is provided with a swing screening drive component;

[0007] The screen is connected to fixed plates on both the left and right sides. Each fixed plate has several return springs connected to the inner wall of the screening box on one side. A push rod is fixed to one side of the fixed plate on the left side. The push rod slides through the left side of the screening box, and an impact ball is fixed to the left end of the push rod near the inner wall of the screening box.

[0008] Preferably, a feed hopper is connected to the upper end of the screening box, and an elastic hose connects the feed hopper and the screening concave box.

[0009] Preferably, the swing screening drive assembly includes a concave rail, a forward and reverse motor, a lead screw, a sliding block, and a telescopic rod. The concave rail is fixed to the right wall inside the screening box, the forward and reverse motor is fixed to the bottom inside the concave rail, one end of the lead screw is connected to the power end of the forward and reverse motor, and the other end of the lead screw is rotatably connected to the top inside the concave rail.

[0010] Preferably, the sliding block is slidably connected to the concave rail, and the sliding block is threadedly connected to the lead screw. One end of the telescopic rod is fixed to the left side of the sliding block, and the other end of the telescopic rod is hinged to the right side of the screening concave box.

[0011] Preferably, a U-shaped elastic band is connected between the outer periphery of the screen and the inner wall of the screening box.

[0012] Preferably, the bottom of the screening box is inclined, and a discharge valve is connected to the lower left side of the screening box.

[0013] Preferably, a waste valve is connected to the middle of the lower end of the screen.

[0014] This utility model provides a seed cleaning sieve structure, which has the following beneficial effects:

[0015] By incorporating a swing-type screening drive component, the screening box and screen are made to swing up and down, thus spreading the seeds back and forth. This helps prevent seeds from accumulating in the same spot on the screen and improves the efficiency of seed screening. Furthermore, the impact ball pushes the screen, and the return spring's elasticity further enhances the shaking screening process, improving seed screening efficiency, ensuring effective seed cleaning, and shaking off impurities that clog the screen. This effectively delays screen clogging and extends the screen's lifespan. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the overall internal structure of this utility model;

[0018] Figure 3 This is a schematic diagram of the internal structure of the screening concave box of this utility model;

[0019] Figure 4 This is a top view of the sieve structure of this utility model.

[0020] Figure 1-4 In the middle: 1. Screening box; 2. Screening concave box; 3. Feed hopper; 4. Flexible hose; 5. Screen; 6. Concave rail; 7. Sliding block; 8. Forward and reverse motor; 9. Lead screw; 10. Telescopic rod; 11. Fixing plate; 12. Return spring; 13. Push rod; 14. Impact ball; 15. Rebound elastic band; 16. Discharge valve; 17. Waste valve. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0022] Please see Figure 1-4This utility model provides a technical solution: a seed cleaning screen structure, including a screening box 1 and a screening concave box 2 with the opening facing downwards. The screening concave box 2 is hinged to the left wall of the screening box 1. A screen 5 is provided in the lower part of the screening concave box 2, and a swing screening drive assembly is provided on the right side of the screening concave box 2. The swing screening drive assembly includes a concave rail 6, a forward and reverse motor 8, a lead screw 9, a sliding block 7, and a telescopic rod 10. The concave rail 6 is fixed to the right wall of the screening box 1. The forward and reverse motor 8 is fixed to the bottom of the concave rail 6. One end of the lead screw 9 is connected to the power end of the forward and reverse motor 8, and the other end of the lead screw 9 is rotatably connected to the top of the concave rail 6. The sliding block 7 is slidably connected to the concave rail 6, and the sliding block 7 is threadedly sleeved with the lead screw 9. One end of the telescopic rod 10 is fixed to the left side of the sliding block 7, and the other end of the telescopic rod 10 is hinged to the right side of the screening concave box 2. A feed hopper 3 is connected to the upper end of the screening box 1, and an elastic hose 4 connects the feed hopper 3 and the screening concave box 2.

[0023] When seeds are screened through screen 5, seeds are added to the elastic hose 4 and screening box 2 through the feed hopper 3. When seeds fall onto screen 5 for screening, the forward and reverse motor 8 works and drives the lead screw 9 to rotate back and forth. The lead screw 9 drives the sliding block 7 to slide up and down along the concave rail 6. At the same time, the sliding block 7 drives the telescopic rod 10 to move up and down together. During the process of the telescopic rod 10 pulling the screening box 2, the telescopic rod 10 will be stretched or compressed. The screening box 2 rotates and tilts with the left wall of the screening box 1 as the base point. This back and forth movement of the telescopic rod 10 helps to make the screening box 2 and screen 5 swing. In this process, the seeds are swung back and forth on the screen 5, which helps to prevent the seeds from accumulating in the same position on the screen 5 and also helps to improve the efficiency of seed screening.

[0024] In this embodiment, the screen 5 is connected to a fixing plate 11 on both the left and right sides. Each fixing plate 11 has a plurality of return springs 12 connected to the inner wall of the screening box 1 on one side. A push rod 13 is fixed on one side of the fixing plate 11 on the left side. The push rod 13 slides through the left side of the screening box 2, and an impact ball 14 close to the inner wall of the screening box 1 is fixed at the left end of the push rod 13.

[0025] As the screening box 2 swings up and down, the impact ball 14 approaches the left wall inside the screening box 1. Therefore, when the screening box 2 rotates clockwise, the impact ball 14 will collide with the left wall inside the screening box 1. Then, the impact ball 14 will push the push rod 13, the fixing plate 11, and the screen 5. At the same time, the fixing plate 11 will stretch or compress the return spring 12. When the screening box 1 rotates counterclockwise and moves the impact ball 14 away from the left wall inside the screening box 1, since the impact ball 14 does not collide with the left wall inside the screening box 1 at this time, the return force of the return spring 12 will drive the screen 5 to reset. This process repeats, and the screen 5 will shake back and forth, which is beneficial for shaking the screen 5 to perform screening and improves the efficiency of seed screening. It also ensures the cleaning effect of seeds and shakes off the impurities that are blocked on the screen 5, effectively delaying the clogging of the screen 5 and thus improving the service life of the screen 5.

[0026] In this embodiment, a U-shaped elastic band 15 is connected between the outer periphery of the screen 5 and the inner wall of the screening box 1.

[0027] When a seed falls onto the sieve 5, the elastic band 15, which is set between the outer edge of the sieve 5 and the inner wall of the screening box 1, helps to prevent the seed from getting stuck in the gap between the sieve 5 and the screening box 1. Moreover, when the sieve 5 swings left and right, it will stretch or compress the elastic band 15, which helps to ensure the normal shaking of the sieve 5.

[0028] In this embodiment, the bottom of the screening box 1 is inclined, and a discharge valve 16 is connected to the lower left side of the screening box 1.

[0029] When it is necessary to discharge the cleaned seeds, the seeds screened by the screen 5 will fall into the bottom of the screening box 1. Since the bottom of the screening box is inclined, after opening the discharge valve 16, the seeds will be discharged into the discharge valve 16 along the inclined surface of the bottom of the screening box 1. Finally, the cleaned seeds will be discharged and collected through the discharge valve 16.

[0030] In this embodiment, a waste valve 17 is connected to the middle of the lower end of the screen 5.

[0031] When it is necessary to discharge the impurities on the screen 5, open the waste valve 17. With the screening box 1 and the screen 5 continuing to swing, the impurities will be swung and spread into the waste valve 17, and then discharged into the bottom of the screening box 1 through the waste valve 17. Finally, they will be discharged through the discharge valve 16, which makes it easier to clean the impurities on the screen 5 so that the screen 5 can be used later.

[0032] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A seed cleaning sieve structure, comprising a screening box (1) and a downward-facing screening recess (2), wherein the screening recess (2) is hinged to the left wall of the screening box (1), characterized in that: The lower part of the screening concave box (2) is provided with a screen (5), and the right side of the screening concave box (2) is provided with a swing screening drive component; The screen (5) is connected to a fixing plate (11) on both the left and right sides. Each fixing plate (11) has several return springs (12) connected to the inner wall of the screening box (1) on one side. A push rod (13) is fixed on one side of the fixing plate (11) on the left side. The push rod (13) slides through the left side of the screening box (2), and an impact ball (14) is fixed at the left end of the push rod (13) near the inner wall of the screening box (1).

2. The seed cleaning sieve structure according to claim 1, characterized in that: The upper end of the screening box (1) is connected to the feed hopper (3), and the feed hopper (3) and the screening concave box (2) are connected by an elastic hose (4).

3. The seed cleaning sieve structure according to claim 1, characterized in that: The swing screening drive assembly includes a concave rail (6), a forward and reverse motor (8), a lead screw (9), a sliding block (7), and a telescopic rod (10). The concave rail (6) is fixed to the right wall inside the screening box (1). The forward and reverse motor (8) is fixed to the bottom inside the concave rail (6). One end of the lead screw (9) is connected to the power end of the forward and reverse motor (8), and the other end of the lead screw (9) is rotatably connected to the top inside the concave rail (6).

4. The seed cleaning sieve structure according to claim 3, characterized in that: The sliding block (7) is slidably connected to the concave rail (6), and the sliding block (7) is threadedly connected to the lead screw (9). One end of the telescopic rod (10) is fixed to the left side of the sliding block (7), and the other end of the telescopic rod (10) is hinged to the right side of the screening concave box (2).

5. The seed cleaning sieve structure according to claim 1, characterized in that: The outer periphery of the screen (5) is connected to the inner wall of the screening box (1) by a U-shaped elastic band (15).

6. The seed cleaning sieve structure according to claim 1, characterized in that: The bottom of the screening box (1) is inclined, and a discharge valve (16) is connected to the lower left side of the screening box (1).

7. The seed cleaning sieve structure according to claim 1, characterized in that: The waste valve (17) is connected to the middle of the lower end of the screen (5).

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