Good seed screening device

Abstract

The utility model relates to an improved variety screening device which comprises a box body, a feeding channel, a first screening piece, a second screening piece, a discharging channel and a transferring piece, and the feeding channel is connected to the outer side of the box body; the first screening piece is connected into the box body and communicates with the feeding channel; the second screening piece is connected into the box body and located on one side of the first screening piece. The discharging channel is connected to the outer side of the box body; the transfer piece is connected into the box body. According to the technical scheme, the seed screening device has the beneficial technical effects that to-be-screened seeds enter the first screening part through the feeding channel, poor-quality seeds small in size can fall to the bottom of the box body, the transferring part transfers the seeds suitable in size to the second screening part, and then high-quality seeds are output to a collecting position through the discharging channel; and an operator can collect through the collecting device. According to the seed screening device, the screening effect is guaranteed, meanwhile, the overall structure is optimized, the maintenance probability is reduced, and therefore the seed screening efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of seed screening equipment, specifically to a superior seed screening device. Background Technology

[0002] Crop seeds refer to the reproductive materials of various plants used in agricultural production. They carry the genetic information of crops and are the foundation of agricultural production.

[0003] Crop seeds carry the genetic information of the crop and, through planting, can produce offspring similar to their parents. Different crop seeds have different morphological characteristics, colors, sizes, and other features. These characteristics are closely related to their growth environment and genetic background. Crop seeds possess a certain degree of adaptability, enabling them to grow under different climatic and soil conditions.

[0004] To ensure crop yield and quality, seed screening is necessary, including appearance screening, which involves identifying seeds by their physical characteristics such as color, shape, and size. Damaged, deformed, or diseased seeds are removed to guarantee the yield and quality of subsequent crop planting.

[0005] In the selection of seeds for crops such as mung beans and corn, it is necessary to screen out seeds of superior quality, i.e., larger and plumper seeds. Existing technologies, such as CN20821215U, provide a screening device for soybean breeding that can perform dust removal while screening. However, this solution has an overly complex structure, and if a layer becomes clogged, maintenance is required, significantly reducing screening efficiency.

[0006] Therefore, it is very necessary to provide a superior seed screening device to solve the above-mentioned technical problems. Utility Model Content

[0007] Based on the above description, this utility model provides a seed screening device to solve the problem that the existing technology has an overly complex structure, and when a certain layer becomes blocked, it is necessary to stop for maintenance, which greatly reduces the seed screening efficiency.

[0008] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: A seed screening device includes a box, a feeding channel, a first screening element, a second screening element, a discharge channel, and a transfer element. The feeding channel is connected to the outside of the box. The first screening element is connected to the inside of the box and communicates with the feeding channel. It can receive the seeds to be screened in the feeding channel and sift the inferior seeds to the bottom of the box, while retaining the screened superior seeds. The second screening element is connected to the inside of the box and is located on one side of the first screening element. It can sift the inferior seeds to the bottom of the box again, while retaining the screened superior seeds. The discharge channel is connected to the outside of the box and can output the seeds screened by the second screening element to a collection position. The transfer element is connected to the inside of the box and can transfer the superior seeds screened by the first screening element to the second screening element.

[0009] Furthermore, the first screening component includes a first support plate, a first slot, and a first baffle. The first support plate is connected to the housing and communicates with the feeding channel. A plurality of first slots are provided, located on the side of the first support plate away from the housing. The cross-section of each first slot is U-shaped. The opening width at the lower end of the U-shaped first slot is smaller than the diameter of the high-quality seeds to be screened, while the opening width at the upper end is larger than the diameter of the high-quality seeds to be screened. The first slots can restrict the high-quality seeds to be screened, and the transfer component can pass through the first slots. Two first baffles are provided, each connected to one side of the first support plate, and the height of the two first baffles is not lower than the feeding channel.

[0010] Furthermore, it also includes a pushing component, which includes a pushing cylinder and a pushing plate. The pushing cylinder has a fixed end and a telescopic end. The fixed end of the pushing cylinder is connected to the housing. The pushing plate is connected to the telescopic end of the pushing cylinder. When the pushing plate extends, it can push the seeds to be screened into the first strip opening.

[0011] Furthermore, it also includes an elastic cover, which is arranged in a ring shape. One end of the elastic cover is connected to the pushing cylinder, and the other end of the elastic cover is connected to the pushing plate, which can prevent the seeds to be screened from falling between the pushing cylinder and the pushing plate.

[0012] Furthermore, the second screening component includes a second support plate, a second strip-shaped opening, and a third strip-shaped opening. The second support plate is connected to the housing and communicates with the discharge channel. The height of the second support plate at one end near the housing is lower than the height at the other end. A plurality of second strip-shaped openings are provided, extending from the end of the second support plate away from the housing to one end of the discharge channel. The second strip-shaped openings can convey high-quality seeds to the discharge channel. The third strip-shaped opening is correspondingly arranged to the second strip-shaped openings, located at the end of the second support plate away from the housing and below the second strip-shaped openings. The transfer component can pass through both the second and third strip-shaped openings.

[0013] Furthermore, the transfer component includes a horizontal moving component, which comprises a horizontal screw, a horizontal guide rod, a horizontal moving frame, and a horizontal motor. Both ends of the horizontal screw are rotatably connected to the housing. A plurality of horizontal guide rods are provided, arranged parallel to the horizontal screw, and both ends of the horizontal guide rods are connected to the housing. The horizontal moving frame is threadedly connected to the horizontal screw and slidably connected to the horizontal guide rods. The horizontal moving frame is provided with lifting guide rail grooves. The horizontal motor has a fixed end and a rotating end; the fixed end of the horizontal motor is connected to the housing, and the rotating end of the horizontal motor is connected to the horizontal screw.

[0014] Furthermore, it also includes a vertical moving component, which comprises a vertical screw, a vertical guide rod, a lifting slider, a screening rod, and a vertical motor. One end of the vertical screw is rotatably connected to the horizontal moving frame; one end of the vertical guide rod is fixedly connected to the horizontal moving frame; the lifting slider is slidably connected to the lifting guide rail groove, and the horizontal screw is rotatably connected to the lifting slider, and the vertical guide rod is slidably connected to the lifting slider; a plurality of screening rods are provided, and the plurality of screening rods are provided with a plurality of circular grooves; the vertical motor has a fixed end and a rotating end, the fixed end of the vertical motor is connected to the horizontal moving frame, and the rotating end of the vertical motor is connected to the vertical screw.

[0015] Furthermore, the feeding channel includes a feeding hopper and a feeding pipe, the feeding hopper being located on one side of the housing; one end of the feeding pipe is connected to the housing, the other end of the feeding pipe is connected to the feeding hopper, and the end of the feeding pipe closer to the housing is lower than the end closer to the feeding hopper.

[0016] Furthermore, the discharge channel includes a discharge hopper, a discharge pipe, and a baffle plate. The discharge hopper is located on the other side of the housing and has an insertion slot. One end of the discharge pipe is connected to the housing, and the other end of the discharge pipe is connected to the discharge hopper. The end of the discharge pipe closer to the housing is higher than the end closer to the discharge hopper. The baffle plate is slidably connected to the insertion slot and can block the outlet of the discharge hopper.

[0017] Furthermore, the bottom of the box is provided with a waste outlet.

[0018] Compared with the prior art, the technical solution of this application has the following beneficial technical effects:

[0019] Seeds to be screened enter the first screening unit through the feeding channel. Smaller, inferior seeds fall to the bottom of the box, where a transfer unit transfers appropriately sized seeds to the second screening unit. Subsequently, high-quality seeds are discharged through the discharge channel to a collection point, where operators collect them using a collection device. This application ensures effective screening while optimizing the overall structure, reducing maintenance frequency, and thus increasing screening efficiency. It solves the problem of existing technologies having overly complex structures that require maintenance shutdowns when a layer becomes clogged, significantly reducing screening efficiency. Attached Figure Description

[0020] Figure 1 One of the overall structural schematic diagrams of a seed screening device provided in this embodiment of the present invention;

[0021] Figure 2 A second schematic diagram of the overall structure of a seed screening device provided in this embodiment of the present invention;

[0022] Figure 3 A front view of a seed selection device provided in an embodiment of this utility model;

[0023] Figure 4 This is a magnified schematic diagram of the structure at point Q in convex mirror 3;

[0024] Figure 5 One of the internal structural schematic diagrams of a seed screening device provided in an embodiment of this utility model;

[0025] Figure 6 for Figure 5 A magnified structural diagram at point Y in the middle;

[0026] Figure 7 for Figure 5 Enlarged structural diagram at point W;

[0027] Figure 8 for Figure 7 Enlarged structural diagram at point E;

[0028] Figure 9 A second schematic diagram of the internal structure of a seed screening device provided in an embodiment of this utility model;

[0029] Figure 10 for Figure 9 Enlarged structural diagram at point R in the middle;

[0030] Figure 11 A top view of a seed selection device provided in an embodiment of this utility model;

[0031] Figure 12 for Figure 11 Schematic diagram of the cross-sectional structure at point AA;

[0032] Figure 13 for Figure 12 A magnified structural diagram at point T.

[0033] The attached diagram lists the components represented by each number as follows:

[0034] 1. Box body;

[0035] 2. Feed channel; 21. Feed hopper; 22. Feed pipe;

[0036] 3. First screening component; 31. First support plate; 32. First strip opening; 33. First baffle; 34. Pushing component; 341. Pushing cylinder; 342. Pushing plate;

[0037] 35. Elastic cover;

[0038] 4. Second screening component; 41. Second support plate; 42. Second slot; 43. Third slot;

[0039] 5. Discharge channel; 51. Discharge hopper; 52. Insertion slot; 53. Discharge pipe; 54. Baffle plate;

[0040] 6. Transfer component; 61. Horizontal moving component; 611. Horizontal screw; 612. Horizontal guide rod; 613. Horizontal moving frame; 614. Lifting guide rail groove; 615. Horizontal motor;

[0041] 62. Vertical moving component; 621. Vertical screw; 622. Vertical guide rod; 623. Lifting slider; 624. Screening rod; 625. Circular groove; 626. Vertical motor;

[0042] 7. Waste export. Detailed Implementation

[0043] To facilitate understanding of this application, a more complete description will be provided below with reference to the accompanying drawings, which illustrate embodiments of the present application. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of this application will be thorough and complete.

[0044] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.

[0045] It is understood that spatial relation terms such as "below," "under," "below," "below," "above," "above," etc., can be used here to describe the relationship between one element or feature shown in the figure and other elements or features. It should be understood that, in addition to the orientation shown in the figure, spatial relation terms also include different orientations of the device in use and operation. For example, if the device in the figure is flipped, the element or feature described as "below" or "below" of the other element or feature will be oriented "above" the other element or feature. Therefore, the exemplary terms "below" and "below" can include both upper and lower orientations. Furthermore, the device may also include other orientations (e.g., rotated 90 degrees or other orientations), and the spatial descriptive terms used herein will be interpreted accordingly.

[0046] It should be noted that when one element is considered to be "connected" to another element, it can be directly connected to the other element or connected to the other element through an intermediary element. In the following embodiments, "connection" should be understood as "electrical connection," "communication connection," etc., if the connected circuits, modules, units, etc., have the transmission of electrical signals or data between them.

[0047] When used herein, the singular forms of “a,” “an,” and “the” may also include the plural forms unless the context clearly indicates otherwise. It should also be understood that the terms “comprising,” “including,” or “having,” etc., specify the presence of the stated feature, whole, step, operation, component, part, or combination thereof, but do not preclude the possibility of the presence or addition of one or more other features, wholes, steps, operations, components, parts, or combinations thereof.

[0048] like Figures 1 to 13As shown, a seed screening device includes a housing 1, a feeding channel 2, a first screening element 3, a second screening element 4, a discharge channel 5, and a transfer element 6. The feeding channel 2 is connected to the outside of the housing 1. The first screening element 3 is connected inside the housing 1 and communicates with the feeding channel 2, and can receive the seeds to be screened in the feeding channel 2, sifting the inferior seeds to the bottom of the housing 1 and retaining the screened superior seeds. The second screening element 4 is connected inside the housing 1 and located on one side of the first screening element 3, and can again sif the inferior seeds to the bottom of the housing 1 and retain the screened superior seeds. The discharge channel 5 is connected to the outside of the housing 1 and can output the seeds screened by the second screening element 4 to a collection position. The transfer element 6 is connected inside the housing 1 and can transfer the superior seeds screened by the first screening element 3 to the second screening element 4.

[0049] In this embodiment, the seeds to be screened enter the first screening element 3 through the feeding channel 2. Smaller, inferior seeds fall to the bottom of the housing 1. The transfer element 6 transfers appropriately sized seeds to the second screening element 4. Subsequently, high-quality seeds are output through the discharge channel 5 to the collection position, where operators can collect them using a collection device. This application ensures screening effectiveness while optimizing the overall structure, reducing maintenance frequency, and thus increasing screening efficiency. This solves the problem of existing technologies having overly complex structures, requiring maintenance shutdowns when a layer becomes clogged, significantly reducing screening efficiency. Furthermore, during the movement of the transfer element 6, empty seeds fall to the bottom of the housing 1. Adding a fan to increase the probability of empty seeds falling should also fall within the scope of this application.

[0050] In some embodiments, the first screening member 3 includes a first support plate 31, a first strip-shaped opening 32, and a first baffle 33. The first support plate 31 is connected to the housing 1 and communicates with the feeding channel 2. A plurality of first strip-shaped openings 32 are provided, each opening on the side of the first support plate 31 away from the housing 1. The cross-section of each first strip-shaped opening 32 is U-shaped. The opening width at the lower end of the U-shaped opening 32 is smaller than the diameter of the high-quality seeds to be screened, and the opening width at the upper end of the U-shaped opening 32 is larger than the diameter of the high-quality seeds to be screened. The first strip-shaped opening 32 can restrict the high-quality seeds to be screened, and the transfer member 6 can pass through the first strip-shaped opening 32. Two first baffles 33 are provided, each connected to both sides of the first support plate 31, and the height of the two first baffles 33 is not lower than the feeding channel 2.

[0051] In this embodiment, the opening above the first strip 32 is larger than the opening below. As a result, high-quality seeds will be collected in the upper opening of the first strip 32, and their arrangement is similar to that of bullets in a magazine. Under the action of gravity, they are arranged one by one from bottom to top, which will not be described in detail here.

[0052] In some embodiments, the device further includes a pusher 34, which includes a pusher cylinder 341 and a pusher plate 342. The pusher cylinder 341 has a fixed end and a telescopic end. The fixed end of the pusher cylinder 341 is connected to the housing 1. The pusher plate 342 is connected to the telescopic end of the pusher cylinder 341. When the pusher plate 342 is extended, it can push the seeds to be screened into the first strip opening 32.

[0053] In this embodiment, the pusher cylinder 341 pushes the pusher plate 342 to push the seeds so that they fall into the first strip-shaped opening 32, so that the subsequent transfer member 6 can collect the seeds that have fallen into the first strip-shaped opening 32. In addition, the pusher cylinder 341 is model CDJ2B10-20Z-B.

[0054] In some embodiments, an elastic cover 35 is also included, which is arranged in a ring shape. One end of the elastic cover 35 is connected to the pusher cylinder 341, and the other end of the elastic cover 35 is connected to the pusher plate 342, which can prevent the seeds to be screened from falling between the pusher cylinder 341 and the pusher plate 342.

[0055] In this embodiment, adding an elastic cover 35 between the pusher cylinder 341 and the pusher plate 342 can effectively prevent seeds from getting stuck between the pusher cylinder 341 and the pusher plate 342.

[0056] In some embodiments, the second screening member 4 includes a second support plate 41, a second strip-shaped opening 42, and a third strip-shaped opening 43. The second support plate 41 is connected inside the housing 1 and communicates with the discharge channel 5. The height of the second support plate 41 at one end near the housing 1 is lower than the height at the other end. A plurality of second strip-shaped openings 42 are provided, extending from the end of the second support plate 41 away from the housing 1 to one end of the discharge channel 5. The second strip-shaped openings 42 can transport high-quality seeds to the discharge channel 5. The third strip-shaped opening 43 is correspondingly provided to the second strip-shaped openings 42. The third strip-shaped opening 43 is opened at the end of the second support plate 41 away from the housing 1 and is located below the second strip-shaped openings 42. The transfer member 6 can pass through the second strip-shaped openings 42 and the third strip-shaped opening 43.

[0057] In this embodiment, the selected high-quality seeds pass through the second slot 42 and fall into the discharge channel 5 under the action of gravity. The third slot 43 is used for the passage of the transfer component 6.

[0058] In some embodiments, the transfer member 6 includes a horizontal moving member 61, which includes a horizontal screw 611, a horizontal guide rod 612, a horizontal moving frame 613, and a horizontal motor 615. The two ends of the horizontal screw 611 are rotatably connected to the housing 1. A plurality of horizontal guide rods 612 are provided, which are arranged parallel to the horizontal screw 611, and both ends of the plurality of horizontal guide rods 612 are connected to the housing 1. The horizontal moving frame 613 is threadedly connected to the horizontal screw 611 and slidably connected to the horizontal guide rods 612. The horizontal moving frame 613 is provided with a lifting guide rail groove 614. The horizontal motor 615 is provided with a fixed end and a rotating end. The fixed end of the horizontal motor 615 is connected to the housing 1, and the rotating end of the horizontal motor 615 is connected to the horizontal screw 611.

[0059] In this embodiment, the horizontal motor 615 drives the horizontal screw 611 to rotate, the horizontal screw 611 drives the horizontal moving frame 613 to move, and the horizontal guide rod 612 ensures that the horizontal moving frame 613 maintains horizontal movement. Furthermore, the horizontal motor 615 is a Siemens 1FL6042-2AF21-1AA1 motor.

[0060] In some embodiments, the system further includes a vertical moving component 62, which includes a vertical screw 621, a vertical guide rod 622, a lifting slider 623, a screening rod 624, and a vertical motor 626. One end of the vertical screw 621 is rotatably connected to the horizontal moving frame 613; one end of the vertical guide rod 622 is fixedly connected to the horizontal moving frame 613; the lifting slider 623 is slidably connected to the lifting guide groove 614, and the horizontal screw 611 is rotatably connected to the lifting slider 623, and the vertical guide rod 622 is slidably connected to the lifting slider 623; a plurality of screening rods 624 are provided, and the plurality of screening rods 624 are provided with a plurality of circular grooves 625; the vertical motor 626 has a fixed end and a rotating end, the fixed end of the vertical motor 626 is connected to the horizontal moving frame 613, and the rotating end of the vertical motor 626 is connected to the vertical screw 621.

[0061] In this embodiment, the vertical motor 626 drives the vertical screw 621 to rotate, and the vertical screw 621 drives the lifting slider 623 to move up and down, thereby driving the screening rod 624 to move up and down. Additionally, the vertical guide rod 622 is used to ensure that the lifting slider 623 does not rotate. Furthermore, the vertical motor 626 is a Siemens 1FL6042-2AF21-1AA1 motor.

[0062] In some embodiments, the feeding channel 2 includes a feeding hopper 21 and a feeding pipe 22. The feeding hopper 21 is located on one side of the housing 1. One end of the feeding pipe 22 is connected to the housing 1, and the other end of the feeding pipe 22 is connected to the feeding hopper 21. The end of the feeding pipe 22 closer to the housing 1 is lower than the end closer to the feeding hopper 21.

[0063] In some embodiments, the discharge channel 5 includes a discharge hopper 51, a discharge pipe 53, and a baffle plate 54. The discharge hopper 51 is located on the other side of the housing 1, and a insertion slot 52 is provided on the discharge hopper 51. One end of the discharge pipe 53 is connected to the housing 1, and the other end of the discharge pipe 53 is connected to the discharge hopper 51. The end of the discharge pipe 53 near the housing 1 is higher than the end near the discharge hopper 51. The baffle plate 54 is slidably connected to the insertion slot 52 and can block the outlet of the discharge hopper 51.

[0064] In some embodiments, the bottom of the housing 1 is provided with a waste outlet 7.

[0065] In this embodiment, the inferior seeds that have been screened are discharged through the waste outlet 7. Furthermore, to ensure that the discharged seeds include high-quality seeds, the discharged seeds are transported to the feed channel 2 for multiple screenings, which should also fall within the scope of protection of this application.

[0066] Compared with the prior art, the technical solution of this application has the following beneficial technical effects:

[0067] Seeds to be screened enter the first screening unit through the feeding channel. Smaller, inferior seeds fall to the bottom of the box, where a transfer unit transfers appropriately sized seeds to the second screening unit. Subsequently, high-quality seeds are discharged through the discharge channel to a collection point, where operators collect them using a collection device. This application ensures effective screening while optimizing the overall structure, reducing maintenance frequency, and thus increasing screening efficiency. It solves the problem of existing technologies having overly complex structures that require maintenance shutdowns when a layer becomes clogged, significantly reducing screening efficiency.

[0068] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A seed selection device, characterized in that, include: Box (1); Feed channel (2), which is connected to the outside of the box (1); The first screening component (3) is connected inside the box (1) and communicates with the feeding channel (2). It can receive the seeds to be screened in the feeding channel (2), and screen the inferior seeds in the seeds to be screened to the bottom of the box (1) while retaining the high-quality seeds. The second screening element (4) is connected inside the box (1) and located on one side of the first screening element (3). It can screen the inferior seeds in the seeds to be screened to the bottom of the box (1) again and retain the high-quality seeds. The discharge channel (5) is connected to the outside of the box (1) and can output the seeds screened by the second screening element (4) to the collection position; The transfer component (6) is connected inside the housing (1) and is capable of transferring the high-quality seeds screened on the first screening component (3) to the second screening component (4).

2. The improved seed screening device according to claim 1, characterized in that, The first screening element (3) includes: A first support plate (31) is connected inside the housing (1), and the first support plate (31) is connected to the feeding channel (2); The first strip opening (32) is provided with a plurality of first strip openings (32) on the side of the first support plate (31) away from the box body (1). The first strip opening (32) has a U-shaped cross section. The opening width at the lower end of the U-shaped first strip opening (32) is smaller than the diameter of the high-quality seeds in the seeds to be screened. The opening width at the upper end of the U-shaped first strip opening (32) is larger than the diameter of the high-quality seeds in the seeds to be screened. The first strip opening (32) can restrict the high-quality seeds in the seeds to be screened. The transfer member (6) can pass through the first strip opening (32). The first baffle (33) is provided in two parts, and the two first baffles (33) are respectively connected to both sides of the first support plate (31), and the height of the two first baffles (33) is not lower than the feed channel (2).

3. The improved seed screening device according to claim 2, characterized in that, It also includes a pusher component (34), which includes: A pusher cylinder (341) is provided with a fixed end and a telescopic end. The fixed end of the pusher cylinder (341) is connected to the housing (1). A pusher plate (342) is connected to the telescopic end of the pusher cylinder (341). When extended, the pusher plate (342) can push the seeds to be screened into the first strip opening (32).

4. The improved seed screening device according to claim 3, characterized in that, It also includes an elastic cover (35) which is arranged in a ring shape. One end of the elastic cover (35) is connected to the pusher cylinder (341), and the other end of the elastic cover (35) is connected to the pusher plate (342), which can prevent the seeds to be screened from falling between the pusher cylinder (341) and the pusher plate (342).

5. The improved seed screening device according to claim 1, characterized in that, The second screening element (4) includes: The second support plate (41) is connected inside the box (1). The second support plate (41) is connected to the discharge channel (5), and the height of the second support plate (41) at one end near the box (1) is lower than the height of the other end. The second strip opening (42) is provided in a plurality of such openings. The plurality of second strip openings (42) extend from one end of the second support plate (41) away from the box body (1) to one end of the discharge channel (5). The second strip openings (42) can deliver high-quality seeds to the discharge channel (5). The third slot (43) is provided corresponding to the second slot (42). The third slot (43) is opened at the end of the second support plate (41) away from the box (1). The third slot (43) is located below the second slot (42). The transfer member (6) can pass through the second slot (42) and the third slot (43).

6. The improved seed screening device according to claim 1, characterized in that, The transfer member (6) includes a horizontal moving member (61), which comprises: A horizontal screw (611) is rotatably connected at both ends to the housing (1); A plurality of horizontal guide rods (612) are provided, wherein the plurality of horizontal guide rods (612) are arranged parallel to the horizontal screw (611), and both ends of the plurality of horizontal guide rods (612) are connected to the housing (1); A horizontal moving frame (613) is threadedly connected to the horizontal screw (611), and the horizontal moving frame (613) is slidably connected to the horizontal guide rod (612). The horizontal moving frame (613) is provided with a lifting guide rail groove (614). A horizontal motor (615) is provided with a fixed end and a rotating end. The fixed end of the horizontal motor (615) is connected to the housing (1), and the rotating end of the horizontal motor (615) is connected to the horizontal screw (611).

7. The improved seed screening device according to claim 6, characterized in that, It also includes a vertical moving element (62), which comprises: A vertical screw (621) is rotatably connected at one end to the horizontal moving frame (613); A vertical guide rod (622) is fixedly connected at one end to the horizontal moving frame (613); The lifting slider (623) is slidably connected to the lifting guide rail groove (614), and the horizontal screw (611) is rotatably connected to the lifting slider (623), and the vertical guide rod (622) is slidably connected to the lifting slider (623); A plurality of screening rods (624) are provided, and the plurality of screening rods (624) are connected to the lifting slider (623). The plurality of screening rods (624) are provided with a plurality of circular grooves (625). A vertical motor (626) has a fixed end and a rotating end. The fixed end of the vertical motor (626) is connected to the horizontal moving frame (613), and the rotating end of the vertical motor (626) is connected to the vertical screw (621).

8. The improved seed screening device according to claim 1, characterized in that, The feed channel (2) includes: A feed hopper (21) is located on one side of the box body (1); The feed pipe (22) is connected at one end to the box body (1) and at the other end to the feed hopper (21), and the end of the feed pipe (22) closer to the box body (1) is lower than the end closer to the feed hopper (21).

9. The improved seed screening device according to claim 1, characterized in that, The discharge channel (5) includes: A discharge hopper (51) is located on the other side of the box body (1), and a plug-in slot (52) is provided on the discharge hopper (51); The discharge pipe (53) is connected at one end to the box (1) and at the other end to the discharge hopper (51), and the end of the discharge pipe (53) closer to the box (1) is higher than the end closer to the discharge hopper (51); The baffle plate (54), which is slidably connected to the insertion slot (52), can block the outlet of the discharge hopper (51).

10. The improved seed screening device according to claim 1, characterized in that, The bottom of the box (1) is provided with a waste outlet (7).

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