A wheat seed selection device

Abstract

This invention proposes a wheat seed selection device, including a frame. Inside the frame, from top to bottom, are inclined and adjustable primary and secondary screens. This invention features a reasonable design and convenient operation. By setting multiple inclined adsorption plates between the primary and secondary screens, it can adsorb metallic impurities mixed in with the wheat seeds. Because there are multiple adsorption plates, falling seeds first land on them, adsorbing metallic impurities without accumulation. Furthermore, it allows workers to easily remove the adsorbed metallic impurities from the drain outlet, achieving rapid cleaning. In addition, the pull-out primary and secondary screens facilitate maintenance and replacement, improving disassembly and assembly efficiency, and also allow for easy screen angle adjustment to meet screening needs under different working conditions, thus expanding its applicability.

Description

Technical Field

[0001] This utility model belongs to the technical field of seed processing equipment, specifically relating to a wheat seed selection device. Background Technology

[0002] In agricultural production, the selection and processing of wheat seeds is a crucial step in improving seed quality and crop yield. Traditional wheat seed selection mainly relies on manual screening or simple mechanical screening equipment. These methods suffer from low efficiency, high labor intensity, and inconsistent selection results. Manual screening is not only time-consuming and labor-intensive but also susceptible to human factors, leading to inconsistent screening standards and difficulty in guaranteeing seed purity. While existing mechanical screening equipment reduces labor intensity to some extent, its simple structure and limited function often only allow for preliminary screening based on seed size or weight, failing to effectively remove metallic impurities and lighter substances, resulting in limited screening accuracy. Furthermore, most existing mechanical screening equipment uses sieves, but the sieves are fixed to the equipment, limiting angle adjustment, narrowing the applicable range, and making replacement during maintenance inconvenient. Utility Model Content

[0003] This invention provides a wheat seed selection device to solve the problems mentioned in the background art, such as the inability of existing mechanical screening equipment to simultaneously screen out metallic impurities or lightweight impurities mixed in with wheat seeds, limited screening accuracy, and inconvenience in disassembling and assembling the screen.

[0004] The technical solution adopted by this utility model is: a wheat seed selection device, including a frame, inside which a primary screen and a secondary screen are arranged at an adjustable angle from top to bottom. Several inclined adsorption plates are installed between the primary screen and the secondary screen, and there is no gap between the vertical downward projections of two adjacent adsorption plates. The adsorption plates can adsorb metal particles mixed in with wheat seeds.

[0005] The adsorption plate is slidably installed inside the frame. The side of the frame has an outwardly recessed cavity. The adsorption plate passes through the cavity and extends to the outside of the frame. A sealing strip is installed on the side wall of the frame near the recess and at the connection between the adsorption plate and the frame. The sealing strip is in close contact with the adsorption plate.

[0006] Several evenly distributed strong magnets are installed on the lower surface of the adsorption plate.

[0007] A drain outlet is formed at the lower opening of the cavity.

[0008] The machine frame is equipped with slide rails on both sides at the top and bottom. One end of the slide rail is rotatably connected to the machine frame. A slide groove is provided in the middle of the slide rail. The primary screen and the secondary screen are slidably installed in the slide groove. One end of the primary screen and the secondary screen extends outward from the machine frame and forms a handle. By pulling the handle, the primary screen or the secondary screen can be removed from the machine frame.

[0009] The slide rail has an extension end on the outer wall of the end away from its hinge axis. An arc-shaped hole is opened on the side wall of the frame. The center of the arc-shaped hole coincides with the center of the slide rail hinge axis. The extension end passes through the arc-shaped hole and extends outward from the frame. A pull rod is connected to the extension end. The upper end of the pull rod passes through the frame and is fastened with a nut.

[0010] The system also includes a base, which is connected to the frame via springs, and a vibrator is mounted on the side of the frame.

[0011] The system also includes a fan installed below the base, with a duct connected to the fan and the air outlet at the end of the duct located below the second discharge plate of the secondary screen.

[0012] A feed plate is installed at the top of the frame.

[0013] The mesh size of the primary screen is larger than that of the secondary screen.

[0014] The beneficial effects of this utility model are as follows:

[0015] This utility model features a reasonable design and convenient operation. By setting multiple inclined adsorption plates between the primary and secondary screens, it can adsorb metallic impurities mixed in with wheat seeds. Because there are multiple adsorption plates, falling seeds first land on them, allowing the metallic impurities to be adsorbed without accumulation. Furthermore, it facilitates easy removal of the adsorbed metallic impurities from the drain outlet, achieving rapid cleaning. In addition, the pull-out primary and secondary screens facilitate maintenance and replacement, improving disassembly and assembly efficiency. They also allow for easy adjustment of the screen angle, meeting screening needs under different working conditions and expanding the scope of application. Attached Figure Description

[0016] Figure 1 This is a structural diagram of the present invention;

[0017] Figure 2 This is a cross-sectional view of the internal structure of the frame of this utility model.

[0018] The markings in the diagram are: 1. Base; 2. Spring; 3. Handle; 4. Feed plate; 5. Frame; 6. Primary screen; 7. Secondary screen; 8. Adsorption plate; 9. First discharge plate; 10. Second discharge plate; 11. Third discharge plate; 12. Fan; 13. Air duct; 14. Air outlet; 15. Vibrator; 16. Strong magnet; 17. Slide rail; 1701. Slide groove; 1702. Extension end; 18. Cavity; 19. Sealing strip; 20. Drain outlet; 21. Pull rod; 22. Nut; 23. Arc-shaped hole. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] As shown in the figure, a wheat seed selection device includes a frame 5, with a feed plate 4 installed at the top of the frame 5. Inside the frame 5, from top to bottom, there are two inclined screens, a primary screen 6 and a secondary screen 7, with adjustable angles. The two screens are inclined in the same direction. The mesh size of the primary screen 6 is larger than that of the secondary screen 7. The primary screen 6 is used to filter out larger impurity particles in the seeds. These impurity particles are finally discharged from the first discharge plate 9 at the end of the primary screen 6 and collected. The secondary screen 7 is used to filter out fine particulate matter mixed in with the seeds. The finished seeds are discharged from the second discharge plate 10 at the end of the secondary screen 7. Small impurity particles slide down from the bottom of the frame 5 and are finally discharged from the third discharge plate 11 at its end.

[0021] Several inclined adsorption plates 8 are installed between the primary screen 6 and the secondary screen 7, with no gap between the vertical downward projections of two adjacent adsorption plates 8. The adsorption plates 8 can adsorb metal particles mixed in with wheat seeds. Specifically, the adsorption plates 8 are slidably installed in the frame 5. The side of the frame 5 has an outwardly recessed cavity 18, and a drain outlet 20 is formed at the lower opening of the cavity 18. The adsorption plates 8 pass through the cavity 18 and extend to the outside of the frame 5. A sealing strip 19 is installed on the side wall of the frame 5 near the groove and at the connection between the adsorption plates 8 and the frame 5. The sealing strip 19 is in close contact with the adsorption plates 8. The purpose of setting the cavity 18 is to allow the adsorption plates 8 to be pulled out from inside the frame 5 during the cleaning process. When pulled out, the impurities are blocked by the sealing strip 19. The blocked impurities can eventually fall into the groove and eventually fall down from the drain outlet 20, preventing metal impurities from falling onto the secondary screen 7.

[0022] Specifically, several evenly distributed strong magnets 16 are installed on the lower surface of the adsorption plate 8.

[0023] The aforementioned adsorption plate 8 is a metal plate with magnetization function, such as a low-carbon steel plate. A strong magnet 16 is installed on the back of these metal plates to magnetize the adsorption plate 8. In this way, wheat seeds can come into contact with the magnetized adsorption plate 8 during the process of falling from the primary screen 6 to the secondary screen 7, thereby adsorbing the metal impurities mixed in with the seeds. There is no gap between the vertical downward projections of two adjacent adsorption plates 8, which means that the seeds can always be in contact with the adsorption plate 8 during the falling process, avoiding the problem of material leakage.

[0024] It is understandable that, in this embodiment, as Figure 1 As shown, the adsorption plate 8 is inclined from top to bottom toward the end where the feed plate 4 is located, so that the seeds can move on the secondary screen 7 for a longer time, thereby improving the screening effect.

[0025] The frame 5 has slide rails 17 installed on its inner sides at the top and bottom. One end of the slide rail 17 is rotatably connected to the frame 5, specifically by a pin, so that one end of the slide rail 17 is fixed and the other end is movable, thus achieving an adjustable angle. A groove 1701 is provided in the middle of the slide rail 17, which runs through both ends of the slide rail 17. The primary screen 6 and the secondary screen 7 are slidably installed in the groove 1701. To facilitate the smooth entry of the two screens into the groove 1701 of the slide rail 17, the slide rail 1701 is designed to allow the two screens to enter the groove 1701 smoothly. Inside the frame 5, the fixed end of the slide rail 17 can be placed close to the side wall of the frame 5, so that when installing two screens, they can smoothly enter the slide groove 1701 of the slide rail 17 through the opening on the side of the frame. One end of the primary screen 6 and the secondary screen 7 extends outward from the frame 5 and forms a handle 3. By pulling the handle 3, the primary screen 6 or the secondary screen 7 can be taken out from the frame 5. This setting is to facilitate the quick removal of the primary screen 6 and the secondary screen 7 from the frame 5, so as to achieve the purpose of quick replacement or maintenance of the screens.

[0026] The slide rail 17 has an extension end 1702 on its outer wall away from its hinge axis. An arc-shaped hole 23 is provided on the side wall of the frame 5. The center of the arc-shaped hole 23 coincides with the center of the hinge axis of the slide rail 17. The extension end 1702 passes through the arc-shaped hole 23 and extends outward from the frame 5. A pull rod 21 is connected to the extension end 1702. The upper end of the pull rod 21 passes through the frame 5 and is fastened by a nut 22. This arrangement is mainly to facilitate the adjustment of the angle of the slide rail 17, thereby achieving the angle adjustment of the two screens. In specific operation, first loosen the nut 22 on the pull rod 21, and pull the pull rod 21 to rotate the slide rail 17 around its hinge axis by a specified angle. Then tighten the nut 22. Since the extension end 1702 does not move in the vertical direction, it also moves in the horizontal direction when it moves up and down, thus maintaining a certain gap between the pull rod 21 and the frame 5, thereby achieving a compensation effect.

[0027] The system also includes a base 1, which is connected to the frame 5 via a spring 2. A vibrator 15 is installed on the side of the frame 5. When the vibrator 15 is started, the frame 5, the primary screen 6, and the secondary screen 7 can vibrate together, which is beneficial for the seed screening process.

[0028] The system also includes a blower 12 installed below the base 1. A duct 13 is connected to the blower 12. The air outlet 14 at the end of the duct 13 is located below the second discharge plate 10 of the secondary screen 7. During the process of the seeds falling from the second discharge plate 10, the air blown by the blower 12 can separate the light impurities mixed in with the seeds, thereby achieving the purpose of seed air separation.

[0029] In operation, this wheat seed selection device involves feeding wheat seeds into the frame 5 through the feed plate 4. The vibrator 15 is activated, and the seeds fall onto the primary screen 6 for initial screening, removing large particles of impurities. These large particles slide along the primary screen 6 and are discharged from the first discharge plate 9. Seeds falling from the primary screen 6 onto the secondary screen 7 fall onto the adsorption plate 8. During this descent, the seeds first land on the magnetized adsorption plate 8, which adsorbs any metal particles mixed in with the seeds, achieving a magnetic separation effect. Smaller impurities are filtered out on the secondary screen 7, and the seeds are finally discharged from the second discharge plate 10. As the seeds fall from the second discharge plate 10, the blower 12 blows air from below, separating lighter substances mixed in with the seeds through air separation. This combination of magnetic separation, air separation, and size screening improves the seed selection efficiency.

[0030] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A wheat seed selection device, characterized in that: The machine includes a frame, inside which are arranged, from top to bottom, an inclined primary screen and a secondary screen with adjustable angle. Between the primary and secondary screens are several inclined adsorption plates, with no gap between the vertical downward projections of adjacent adsorption plates. The adsorption plates can adsorb metal particles mixed in with wheat seeds. Inside the frame, slide rails are installed on both sides at the top and bottom. One end of the slide rail is rotatably connected to the frame. A groove is provided in the middle of the slide rail. The primary and secondary screens are slidably installed in the groove. One end of the primary and secondary screens extends outward from the frame and forms a handle. By pulling the handle, the primary or secondary screen can be removed from the frame.

2. The wheat seed selection device according to claim 1, characterized in that: The adsorption plate is slidably installed inside the frame. The side of the frame has an outwardly recessed cavity. The adsorption plate passes through the cavity and extends to the outside of the frame. A sealing strip is installed on the side wall of the frame near the recess and at the connection between the adsorption plate and the frame. The sealing strip is in close contact with the adsorption plate.

3. The wheat seed selection device according to claim 2, characterized in that: Several evenly distributed strong magnets are installed on the lower surface of the adsorption plate.

4. The wheat seed selection device according to claim 2, characterized in that: A drain outlet is formed at the lower opening of the concave cavity.

5. The wheat seed selection device according to claim 1, characterized in that: The slide rail has an extension end on the outer wall of the end away from its hinge axis. An arc-shaped hole is opened on the side wall of the frame. The center of the arc-shaped hole coincides with the center of the slide rail hinge axis. The extension end passes through the arc-shaped hole and extends outward from the frame. A pull rod is connected to the extension end. The upper end of the pull rod passes through the frame and is fastened with a nut.

6. The wheat seed selection device according to claim 1, characterized in that: It also includes a base, which is connected to the frame by springs, and a vibrator is mounted on the side of the frame.

7. The wheat seed selection device according to claim 6, characterized in that: It also includes a blower installed under the base, with an air duct connected to the blower, and the air outlet at the end of the air duct is located below the second discharge plate of the secondary screen.

8. The wheat seed selection device according to claim 1, characterized in that: A feed plate is installed at the top of the frame.

9. The wheat seed selection device according to claim 1, characterized in that: The mesh size of the primary screen is larger than that of the secondary screen.

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