A soybean seed sorting device

Abstract

The utility model provides a soybean seed selection device, including frame. The upper portion of frame head end is equipped with feeding hopper, and its bottom is rotatably connected with the discharge rotary drum, and the frame is equipped with the drive motor to drive the discharge rotary drum to rotate. The outer periphery of the discharge rotary drum is provided with a plurality of rows of circumferentially distributed seed feeding holes, and the bottom of the feeding hopper is provided with a discharge port towards one side of the tail end of the frame. Inside the frame, a screening plate is obliquely arranged downward below the discharge port, and the upper end of the screening plate is provided with a plurality of seed chutes corresponding to the seed feeding holes. A mounting bracket is horizontally arranged above the screening plate inside the frame, and the lower side of the mounting bracket is provided with a plurality of intelligent cameras. The seed chute of the screening plate is provided with a seed dropping port below the mounting bracket, and a blocking bar rotatably connected to the seed dropping port is provided with a blocking opening. The screening plate is provided with an elastic member to block the opening of the blocking bar, and a strip-shaped electromagnet obliquely arranged downward at the seed dropping port can magnetically attract the blocking bar to open the seed dropping port. The device can realize accurate screening based on the external shape characteristics of soybean particles by combining mechanical and orderly seed feeding with intelligent visual detection, and can remove unqualified seeds, thereby significantly improving the purity and quality of the seeds.

Description

Technical Field

[0001] This utility model belongs to the field of seed screening technology and relates to a soybean seed selection device. Background Technology

[0002] In the process of large-scale soybean cultivation and the development of high-quality seed industry, seed quality directly determines the sowing and emergence rate, field resistance, and final crop yield, and is a core link in ensuring agricultural production efficiency and agricultural product quality and safety. Therefore, carrying out scientific and efficient soybean seed selection is of great significance for improving seed purity and optimizing sowing results. Traditional soybean seed selection mainly relies on manual visual inspection or simple sieve grading, which can only perform preliminary screening based on seed size. Although this method is simple to operate, it suffers from low efficiency, strong subjectivity, and poor consistency, making it difficult to meet the requirements for breeding high-quality seeds. With the development of agricultural mechanization and intelligent technology, various automated soybean seed selection devices are gradually being applied to production. For example, equipment based on vibrating sieving, airflow sorting, or photoelectric recognition principles has improved the automatic grading of soybeans according to physical parameters such as particle size, density, or weight to a certain extent.

[0003] However, most existing commercial seed selection equipment still focuses primarily on single-dimensional parameters such as soybean size or weight, lacking the ability to accurately identify and target seeds based on their appearance quality. Surface defects such as mold, insect infestation, damage, wrinkling, or discoloration directly affect seed vigor, disease resistance, and germination rate, and are key indicators impacting seed quality. Currently, the screening of soybean seeds with such abnormal appearances still heavily relies on manual visual inspection, which is not only labor-intensive and costly but also inefficient, failing to meet the demands of large-scale, standardized, and high-quality modern seed production. Therefore, developing an intelligent seed selection device capable of accurately identifying soybean appearance characteristics and efficiently sorting high-quality seeds has become an urgent need to address the current bottlenecks in seed selection technology. Utility Model Content

[0004] This utility model aims to provide a soybean seed selection device that achieves precise screening based on the morphological characteristics of soybeans through the coordinated design of mechanized orderly seed delivery and intelligent visual detection. This solves the problems of low efficiency, strong subjectivity, and single screening dimension of traditional seed selection, and significantly improves seed quality and the standardization level of seed selection operations.

[0005] To solve the above-mentioned technical problems, this utility model provides a soybean seed selection device, including a frame, a feeding hopper is provided at the upper part of the head end of the frame, the bottom of the feeding hopper is arc-shaped inside the frame, a feeding drum is rotatably connected to the bottom of the feeding hopper, a drive motor for driving the feeding drum to rotate is installed outside the frame, multiple rows of seed infeed holes are opened inward on the outer circumference of the feeding drum, and a feeding port that cooperates with the feeding drum is opened on the bottom of the feeding hopper facing the tail end of the frame;

[0006] A screening plate is inclined downwards from the feed port towards the tail end of the frame inside the frame. The screening plate extends out of the tail end of the frame. Multiple seed grooves corresponding to the seed inlet holes are provided on the upper end of the screening plate towards the tail end of the frame. An installation frame is provided above the screening plate inside the frame along the length of the feed drum. Multiple smart cameras are installed on the lower side of the installation frame along its length.

[0007] Each seed groove of the screening plate has a seed drop opening below the mounting frame. The screening plate is rotatably connected to a baffle bar at each seed drop opening, which can block the corresponding seed drop opening. The screening plate is provided with an elastic element that can drive the baffle bar to block the seed drop opening. Each baffle bar is made of a magnetically attracted metal material. The screening plate is equipped with a downwardly oriented bar electromagnet at each seed drop opening. The bar electromagnet can magnetically attract the baffle bar to rotate downwards, thereby opening the seed drop opening.

[0008] By adopting the above technical solution, when soybean seed selection is required, soybean seeds are first placed into the feeding hopper, and the drive motor is started. The drive motor drives the feeding drum to rotate, and the soybean seeds in the feeding hopper gradually enter the seed inlet located at the top. As the feeding drum rotates, when it reaches the feeding port position, the seeds roll out from the seed inlet and slide out along the seed chute. During the seed sliding process, the intelligent camera under the mounting frame performs visual recognition of the seeds to determine whether the seeds have defects such as damage. At the same time, the supplementary light provides sufficient light for the intelligent camera to ensure accurate recognition. If the intelligent camera detects a defect in the seed shape, the control circuit will control the corresponding bar electromagnet to be energized. The bar electromagnet generates magnetic force to attract the baffle bar to rotate downward, thereby opening the seed drop port, allowing the defective seeds to fall into the receiving trough below, and finally be discharged outward along the receiving trough and discharge channel; while the intact seeds continue to slide along the seed chute to the end of the frame and be discharged, completing the seed selection process.

[0009] The present invention is further configured such that a receiving groove is provided below the seed inlet inside the frame, the bottom of the receiving groove is inclined to one side of the frame, and the downwardly inclined end of the receiving groove is provided with a discharge channel extending out of the frame.

[0010] The present invention is further configured such that a supplementary light is mounted downward on the mounting bracket along its length.

[0011] The present invention is further configured such that a control strip is provided on the lower side of the screening plate along its width direction at one end of the seed drop opening, a control circuit is provided in the control strip, and the elastic element is an elastic rubber strip connected between the control strip and one end of the baffle.

[0012] The present invention is further configured such that the elastic rubber strip is connected to one end of the stop bar facing the feeding drum.

[0013] The present invention is further configured such that the baffle is made of a stainless steel sheet that can be magnetically attracted.

[0014] Compared with existing technologies, this invention has the following advantages: Through the coordinated operation of an intelligent camera and a control circuit, this device achieves automated identification and precise removal of soybean appearance defects. Compared with traditional manual screening methods, it not only significantly improves seed selection efficiency and reduces labor intensity and labor costs, but also effectively avoids errors caused by subjective human judgment, and significantly improves the consistency of seed quality. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a partial cross-sectional view used to illustrate the internal structure of an embodiment of a soybean seed selection device according to this utility model;

[0017] Figure 3 Used to display the seed drop openings on the screening plate;

[0018] Figure 4 Used to display the baffles and bar electromagnets at the bottom of the screening plate;

[0019] Figure 5 Used to display the smart camera and fill light on the mounting rack.

[0020] The components include: 1. Frame; 2. Feeding hopper; 3. Feeding drum; 4. Drive motor; 5. Seed inlet; 6. Screening plate; 7. Seed chute; 8. Mounting frame; 9. Smart camera; 10. Supplemental light; 11. Seed drop outlet; 12. Baffle bar; 13. Control bar; 14. Elastic rubber strip; 15. Strip electromagnet; 16. Receiving trough; 17. Discharge channel. Detailed Implementation

[0021] The following detailed description, in conjunction with the accompanying drawings and specific embodiments, provides a further detailed explanation of the soybean seed selection device proposed in this utility model. The advantages and features of this utility model will become clearer from the following description. It should be noted that the drawings are all in a very simplified form and use non-precise proportions, and are only used to facilitate and clarify the illustration of the embodiments of this utility model. The same or similar reference numerals in the drawings represent the same or similar parts.

[0022] Example, refer to Figure 1-5 A soybean seed selection device includes a frame 1. A feeding hopper 2 with an open top is provided at the upper part of the head end of the frame 1. The bottom of the feeding hopper 2 is arc-shaped inside the frame 1. A feeding drum 3 is rotatably connected to the bottom of the feeding hopper 2. A drive motor 4 for driving the feeding drum 3 to rotate is installed on the outside of the frame 1. The power output shaft of the drive motor 4 is connected to one end of the feeding drum 3. Multiple rows of seed inlet holes 5 are opened inwardly on the outer circumference of the feeding drum 3. A feeding port (not shown) is opened on the bottom of the feeding hopper 2 facing the tail end of the frame 1, which cooperates with the feeding drum 3. During the rotation of the feeding drum 3, the soybean seeds in the feeding hopper 2 can gradually enter the seed inlet holes 5 located at the top. As the feeding drum 3 rotates downward to the feeding port position, the seeds roll out from the seed inlet holes 5 at the feeding port.

[0023] A screening plate 6 is installed downwards at the rear end of the frame 1 below the feeding port. The screening plate 6 extends beyond the rear end of the frame 1, allowing high-quality seeds that have passed through it to be discharged from the rear end. A collection frame is placed at the rear end during seed selection. Multiple seed grooves 7, corresponding one-to-one with the seed inlet 5, are provided on the upper end of the screening plate 6 towards the rear end of the frame 1. This allows seeds discharged from the feeding drum 3 to slide out row by row along the seed grooves 7, facilitating identification and screening. Two mounting frames 8 are installed above the screening plate 6 within the frame 1 along the length of the feeding drum 3. Three intelligent cameras 9 are mounted on the lower side of each mounting frame 8, extending along its length. These cameras intelligently identify the shape of the seeds and determine if they are damaged. A supplementary light 10 is installed downwards along the length of each mounting frame 8 to aid in visual identification by the intelligent cameras 9.

[0024] Each seed chute 7 of the screening plate 6 has a seed drop opening 11 below each mounting bracket 8. A baffle 12 is rotatably connected to each seed drop opening 11 on the screening plate 6 to block it. A control strip 13 is provided on the lower side of the screening plate 6 along its width at one end of the seed drop opening 11. A control circuit (not shown) is installed inside the control strip 13. An elastic rubber strip 14 connects the control strip 13 and the baffle 12 at the end facing the feeding drum 3. The elastic rubber strip 14 acts as an elastic element, driving the baffle 12 to block the seed drop opening. 11. Each baffle 12 is made of magnetically attractable stainless steel sheet. A downward-sloping bar electromagnet 15 is installed at each seed drop opening 11 on the screening plate 6. The bar electromagnet 15 magnetically attracts the baffle 12 to rotate downwards, opening the seed drop opening 11. When a seed morphological defect is detected, the corresponding bar electromagnet 15 is energized to attract the baffle 12 to rotate downwards, opening the seed drop opening 11 and allowing the seed to fall. After the bar electromagnet 15 is de-energized, the baffle 12 rotates upwards under the elastic force of the elastic rubber strip 14, blocking the seed drop opening 11. A receiving trough 16 is provided below the seed drop opening 11 inside the frame 1. The bottom of the receiving trough 16 slopes towards one side of the frame 1. A discharge channel 17 extends outwards from the downward-sloping end of the receiving trough 16, extending outwards from the frame 1. Defective seeds falling from the seed drop opening 11 fall into the receiving trough 16 and are finally discharged outwards along the receiving trough 16 and the discharge channel 17.

[0025] Working principle: When soybean seed selection is required, soybean seeds are first placed into the feeding hopper 2. The drive motor 4 is started, which drives the feeding drum 3 to rotate. The soybean seeds in the feeding hopper 2 gradually enter the seed inlet 5 located at the top. As the feeding drum 3 rotates, when it reaches the feeding port position, the seeds roll out from the seed inlet 5 and slide out along the seed chute 7. During the seed sliding process, the intelligent camera 9 under the mounting frame 8 performs visual recognition of the seeds to determine whether there are any defects such as damage. At the same time, the supplementary light 10 provides sufficient light for the intelligent camera 9 to ensure accurate recognition. If the smart camera 9 detects a defect in the seed shape, the control circuit will control the corresponding bar electromagnet 15 to be energized. The bar electromagnet 15 generates magnetic force to attract the baffle 12 to rotate downward, thereby opening the seed drop port 11, allowing the defective seeds to fall into the receiving trough 16 below, and finally be discharged outward along the receiving trough 16 and the discharge channel 17; while the seeds with intact shape continue to slide along the seed slide 7 to the end of the frame 1 and be discharged, completing the seed selection process.

[0026] It should also be noted that all terms such as "set up" and similar descriptive words in this application (especially the specification) indicate that two structures have or exist a connection relationship. However, the specific means by which the two are connected are not limited in detail, and are usually conventional connection methods. That is, the means should be understood as prior art and do not need to be elaborated. For example, "m is set up with n" only indicates that structure m has structure n, and whether the two are connected by welding, riveting, adhesive, or integral molding is within the scope of protection of this application. Similarly, "x is rotatably set up with y" only indicates that y and x can rotate relative to each other, and whether the two are connected by a bearing, or whether y directly passes through x and is rotatably connected to x, or other feasible methods, are all within the scope of protection of this application.

[0027] The above description is only a description of the preferred embodiment of the present utility model and is not intended to limit the scope of the present utility model in any way. Any changes or modifications made by those skilled in the art based on the above disclosure shall fall within the protection scope of the claims.

Claims

1. A soybean seed selection device, comprising a frame (1), characterized in that, A feeding hopper (2) is provided at the upper part of the head end of the frame (1). The bottom of the feeding hopper (2) is arc-shaped inside the frame (1). A feeding drum (3) is rotatably connected to the bottom of the feeding hopper (2). A drive motor (4) for driving the feeding drum (3) to rotate is installed outside the frame (1). Multiple rows of seed inlet holes (5) are opened inward on the outer periphery of the feeding drum (3). A feeding port that cooperates with the feeding drum (3) is opened on the side of the bottom of the feeding hopper (2) facing the tail end of the frame (1). A screening plate (6) is inclined downwards from the bottom of the feed port to the tail end of the frame (1) inside the frame (1). The screening plate (6) extends out of the tail end of the frame (1). Multiple seed grooves (7) corresponding to the seed inlet (5) are provided on the upper end of the screening plate (6) towards the tail end of the frame (1). An installation frame (8) is provided above the screening plate (6) along the length of the feed drum (3) inside the frame (1). Multiple smart cameras (9) are installed on the lower side of the installation frame (8) along its length. Each seed groove (7) of the screening plate (6) is provided with a seed drop opening (11) below the mounting frame (8). The screening plate (6) is rotatably connected to a baffle (12) that can block the corresponding seed drop opening (11) at each seed drop opening (11). The screening plate (6) is provided with an elastic element that can drive the baffle (12) to block the seed drop opening (11). Each baffle (12) is made of a metal material that can be magnetically attracted. The screening plate (6) is equipped with a bar electromagnet (15) that is set at an angle downward at each seed drop opening (11). The bar electromagnet (15) can magnetically attract the baffle (12) to rotate downward and open the seed drop opening (11).

2. The soybean seed selection device according to claim 1, characterized in that, A receiving trough (16) is provided below the seed drop port (11) inside the frame (1). The bottom of the receiving trough (16) is inclined toward one side of the frame (1), and the downward inclined end of the receiving trough (16) is provided with a discharge channel (17) extending out of the frame (1).

3. The soybean seed selection device according to claim 1, characterized in that, The mounting bracket (8) has a supplementary light (10) installed downward along its length.

4. The soybean seed selection device according to claim 1, characterized in that, A control strip (13) is provided on the lower side of the screening plate (6) along its width direction at one end of the seed drop opening (11). A control circuit is provided inside the control strip (13). The elastic element is an elastic rubber strip (14) connected between the control strip (13) and one end of the baffle (12).

5. The soybean seed selection device according to claim 4, characterized in that, The elastic rubber strip (14) is connected to the end of the baffle (12) facing the feeding drum (3).

6. The soybean seed selection device according to claim 1, characterized in that, The baffle (12) is made of a stainless steel sheet that can be magnetically attracted.

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