A seed screening device

Abstract

This utility model discloses a seed screening device, relating to the field of seed screening technology. It includes a screening box with a feeding hopper at the top and a dust collection box at the bottom, connected to the screening box. Inside the screening box are two screening cylinders, each with an inlet at the top and an outlet at the bottom. The inner wall of the outlet is equipped with a large-mesh screen. A motor is mounted on the outer wall of the screening box, and the motor's output shaft is connected to a rotating cylinder located inside the screening cylinders. A pusher plate is mounted on the outer wall of the rotating cylinder, slidingly engaging with the inner wall of the rotating cylinder. This utility model controls the electric telescopic rod piston rod to shorten, causing a baffle to move away from the discharge port. The pusher plate then pushes large seeds from the discharge port into a large seed collection trough, resulting in good screening effect and improved seed screening quality.

Description

Technical Field

[0001] This utility model relates to the field of seed screening technology, and in particular to a seed screening device. Background Technology

[0002] Agricultural technology extension refers to the activities of popularizing and applying agricultural technologies to the entire process of agricultural production, including pre-production, production, and post-production, through methods such as experimentation, demonstration, training, guidance, and consulting services. It covers fields such as crop farming, forestry, animal husbandry, and fisheries. In the process of agricultural technology extension, seed screening devices are needed to screen seeds.

[0003] A search revealed Chinese patent publication number CN221361147U, which discloses a seed screening device, including a screening box. A controller is fixedly connected to the front center of the screening box. Feed hoppers are fixedly connected to the upper left and upper right sides of the screening box. A vibration mechanism is movably connected to the upper center of the screening box. Two sealing doors are movably connected to the left and right ends of the screening box via hinges.

[0004] Existing technologies similar to the screening devices described above have limitations when too many seeds fall into the screening area at once. The screen cannot screen them all at once, resulting in many small seeds being mixed with large seeds, leading to poor screening results. Therefore, there is room for improvement. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing a seed screening device. Its advantages lie in controlling the shortening of the electric telescopic piston rod, which moves the baffle away from the discharge port, allowing the pusher plate to push large seeds from the discharge port into the large seed collection trough, resulting in good screening effect and improved seed screening quality.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A seed screening device includes a screening box, a feeding hopper at the top of the screening box, a dust collection box at the bottom of the screening box, the dust collection box being connected to the screening box, two screening cylinders inside the screening box, a feeding port at the top of the screening cylinders, a discharge port at the bottom of the screening cylinders, a large-mesh screen on the inner wall of the discharge port, a motor on the outer wall of the screening box, the output shaft of the motor being connected to a rotating cylinder, the rotating cylinder being located inside the screening cylinders, a pusher plate on the outer wall of the rotating cylinder, the pusher plate being in sliding fit with the inner wall of the rotating cylinder;

[0008] Both screening cylinders have discharge ports on their opposite outer walls. The inner walls of the discharge ports are rotatably connected to baffles. Mounting plates are provided on both sides of the screening box. Electric telescopic rods are hinged to the bottom of the mounting plates. The piston rods of the electric telescopic rods are hinged to the baffles. Large seed collection troughs are provided on both sides of the screening box. The large seed collection troughs are located below the discharge ports.

[0009] The above technical solution works as follows: During use, seeds are poured from the feeding hopper into the screening box. The seeds enter two screening cylinders through the feed inlet. Smaller seeds and impurities fall through the large-mesh screen, but the smaller seeds and impurities on the upper layer cannot fall. The motor drives the pusher plate to rotate, which stirs the seeds in the screening cylinder. The smaller seeds and impurities on the upper layer fall to the lower layer for screening. After repeated stirring, until all the smaller seeds and impurities are screened, only larger seeds remain in the screening cylinder. The electric telescopic rod piston rod is then shortened, the baffle moves away from the discharge port, and the pusher plate pushes the larger seeds from the discharge port into the large seed collection trough. This results in good screening effect and improves the screening quality of the seeds.

[0010] The present invention is further configured such that a guide block is provided at the top of the screening cylinder, and the cross-section of the guide block is triangular.

[0011] Through the above technical solution, the setting of the guide block can guide the seeds into the screening cylinder, improving the smoothness of feeding.

[0012] The present invention is further configured such that the inner wall of the screening box is provided with a perforated sieve plate, and small seed collection grooves are provided on both sides of the screening box, the small seed collection grooves being located at the lower end of the perforated sieve plate.

[0013] The above technical solution, with its small-hole sieve plate, facilitates further screening of seeds and impurities, and makes it easier to separate small seeds from dust.

[0014] The present invention is further configured such that the cross-section of the perforated sieve plate is V-shaped.

[0015] The above technical solution, with its V-shaped cross-section, allows seeds to fall easily down the inclined surface of the perforated sieve plate, improving the ease of screening.

[0016] The present invention is further configured such that guide plates are provided on both sides of the screening box, and the guide plates are located between the perforated sieve plate and the screening cylinder.

[0017] The above technical solution, with its guide plate, allows small seeds to be easily guided to the top of the small-hole sieve plate and fall, improving the uniformity of screening.

[0018] The present invention is further provided that an inspection port is provided on one outer wall of the screening box, and an inspection door is provided on the inner wall of the inspection port.

[0019] The above technical solution allows for convenient inspection of the internal parts of the screening box, improving the ease of equipment maintenance.

[0020] The present invention is further provided with a handle on the outer wall of the inspection door, and the inner wall of the handle is provided with anti-slip texture.

[0021] The above technical solution, with its handle design, allows for easy opening and closing of the maintenance door, improving operational convenience.

[0022] The beneficial effects of this utility model are as follows:

[0023] 1. In use, seeds are poured from the feeding hopper into the screening box. The seeds enter the two screening cylinders through the feed inlet. Smaller seeds and impurities fall through the large-mesh screen, but the small seeds and impurities on the upper layer cannot fall. The motor drives the pusher plate to rotate, which stirs the seeds in the screening cylinder. The small seeds and impurities on the upper layer fall to the lower layer for screening. After stirring repeatedly until all small seeds and impurities are screened, only large seeds remain in the screening cylinder. The piston rod of the electric telescopic rod is shortened, the baffle moves away from the discharge port, and the pusher plate pushes the large seeds from the discharge port into the large seed collection trough. The screening effect is good, improving the screening quality of seeds.

[0024] 2. This seed screening device features a guide block that guides seeds into the screening cylinder, improving the smoothness of feeding; a small-hole sieve plate facilitates further screening of seeds and impurities, making it easy to separate small seeds from dust; and a V-shaped cross-section design allows seeds to fall smoothly down the inclined surface of the small-hole sieve plate, improving the convenience of screening. Attached Figure Description

[0025] Figure 1 This is a three-dimensional structural diagram of a seed screening device proposed in this utility model;

[0026] Figure 2 This is a cross-sectional structural diagram of a seed screening device proposed in this utility model;

[0027] Figure 3 for Figure 2 A magnified structural diagram of point A in the middle.

[0028] In the diagram: 1. Screening box; 2. Feeding hopper; 3. Motor; 4. Inspection door; 5. Handle; 6. Dust collection box; 7. Small seed collection trough; 8. Large seed collection trough; 9. Baffle; 10. Electric telescopic rod; 11. Mounting plate; 12. Guide block; 13. Push plate; 14. Large-hole screen; 15. Small-hole screen plate; 16. Guide plate; 17. Rotary drum; 18. Screening drum. Detailed Implementation

[0029] The technical solution of this patent will be further described in detail below with reference to specific embodiments.

[0030] The embodiments of this patent are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this patent, and should not be construed as limiting this patent.

[0031] Example 1

[0032] Reference Figure 1-3 A seed screening device includes a screening box 1, a feeding hopper 2 at the top of the screening box 1, a dust collection box 6 at the bottom of the screening box 1, the dust collection box 6 being connected to the screening box 1, two screening cylinders 18 inside the screening box 1, a feeding port at the top of the screening cylinder 18, a discharge port at the bottom of the screening cylinder 18, a large-hole screen 14 on the inner wall of the discharge port, a motor 3 on the outer wall of the screening box 1, the output shaft of the motor 3 being connected to a rotating cylinder 17, the rotating cylinder 17 being located inside the screening cylinder 18, a pusher plate 13 on the outer wall of the rotating cylinder 17, the pusher plate 13 being in sliding fit with the inner wall of the rotating cylinder 17;

[0033] Both screening cylinders 18 have discharge ports on their opposite outer walls. The inner walls of the discharge ports are rotatably connected to baffles 9. Both sides of the screening box 1 are provided with mounting plates 11. The bottom of the mounting plates 11 is hinged with an electric telescopic rod 10. The piston rod of the electric telescopic rod 10 is hinged to the baffle 9. Both sides of the screening box 1 are provided with large seed collection troughs 8, which are located below the discharge ports.

[0034] In this embodiment, a guide block 12 is provided at the top of the screening cylinder 18. The cross-section of the guide block 12 is triangular. The seeds can be guided into the screening cylinder 18 through the guide block 12, which improves the smoothness of feeding.

[0035] Furthermore, the inner wall of the screening box 1 is provided with a perforated sieve plate 15, and small seed collection troughs 7 are provided on both sides of the screening box 1. The small seed collection troughs 7 are located at the lower end of the perforated sieve plate 15. The perforated sieve plate 15 can facilitate further screening of seeds and impurities, and facilitate the separation of small seeds and dust. The cross-section of the perforated sieve plate 15 is V-shaped. The perforated sieve plate 15 with a V-shaped cross-section can facilitate the seeds to fall down the inclined surface of the perforated sieve plate 15, which improves the convenience of screening.

[0036] It is worth mentioning that guide plates 16 are provided on both sides of the screening box 1. The guide plates 16 are located between the perforated sieve plate 15 and the screening cylinder 18. The guide plates 16 can easily guide small seeds to the top of the perforated sieve plate 15 and make them fall, thus improving the uniformity of screening.

[0037] Working principle: When in use, the seeds are poured from the feeding hopper 2 into the screening box 1. The seeds enter the two screening cylinders 18 through the feed inlet. Smaller seeds and impurities will fall through the large-hole screen 14, but the small seeds and impurities on the upper layer cannot fall. The motor 3 is controlled to drive the pusher plate 13 to rotate. The pusher plate 13 stirs the seeds in the screening cylinder 18. The small seeds and impurities on the upper layer will fall to the lower layer and be screened. After stirring repeatedly, until all the small seeds and impurities are screened, only large seeds remain in the screening cylinder 18. The piston rod of the electric telescopic rod 10 is shortened, the baffle 9 is moved away from the discharge port, and the pusher plate 13 pushes the large seeds from the discharge port into the large seed collection tank 8. The screening effect is good, and the screening quality of the seeds is improved.

[0038] Example 2

[0039] This second embodiment is based on the first embodiment, and is more specific, such as... Figure 1 As shown, an inspection port is provided on one outer wall of the screening box 1, and an inspection door 4 is provided on the inner wall of the inspection port. The interior of the screening box 1 can be easily inspected through the inspection port, which improves the convenience of equipment maintenance. A handle 5 is provided on the outer wall of the inspection door 4, and the inner wall of the handle 5 is provided with anti-slip texture. The inspection door 4 can be easily opened or closed through the handle 5, which improves the convenience of operation.

[0040] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A seed screening device, comprising a screening box (1), wherein a feeding hopper (2) is provided at the top of the screening box (1), and a dust collection box (6) is provided at the bottom of the screening box (1), wherein the dust collection box (6) is connected to the screening box (1), characterized in that, The screening box (1) is equipped with two screening cylinders (18) inside. The top of the screening cylinder (18) is provided with a feed port and the bottom of the screening cylinder (18) is provided with a discharge port. The inner wall of the discharge port is provided with a large-hole screen (14). The outer wall of the screening box (1) is provided with a motor (3). The output shaft of the motor (3) is connected to a rotating cylinder (17). The rotating cylinder (17) is located inside the screening cylinder (18). The outer wall of the rotating cylinder (17) is provided with a pusher plate (13). The pusher plate (13) and the inner wall of the rotating cylinder (17) form a sliding fit. The two screening cylinders (18) are provided with discharge ports on their opposite outer walls. The inner walls of the discharge ports are rotatably connected to baffles (9). The screening box (1) is provided with mounting plates (11) on both sides. The bottom of the mounting plate (11) is hinged to an electric telescopic rod (10). The piston rod of the electric telescopic rod (10) is hinged to the baffle (9). The screening box (1) is provided with large seed collection troughs (8) on both sides. The large seed collection troughs (8) are located below the discharge ports.

2. The seed screening device according to claim 1, characterized in that, The top of the screening cylinder (18) is provided with a guide block (12), and the cross-section of the guide block (12) is triangular.

3. The seed screening device according to claim 1, characterized in that, The inner wall of the screening box (1) is provided with a perforated sieve plate (15), and small seed collection troughs (7) are provided on both sides of the screening box (1). The small seed collection troughs (7) are located at the lower end of the perforated sieve plate (15).

4. The seed screening device according to claim 3, characterized in that, The cross-section of the perforated sieve plate (15) is V-shaped.

5. The seed screening device according to claim 4, characterized in that, The screening box (1) is provided with guide plates (16) on both sides, and the guide plates (16) are located between the small hole screen plate (15) and the screening cylinder (18).

6. The seed screening device according to claim 1, characterized in that, The screening box (1) has an inspection port on one outer wall, and an inspection door (4) is provided on the inner wall of the inspection port.

7. A seed screening device according to claim 6, characterized in that, The outer wall of the inspection door (4) is provided with a handle (5), and the inner wall of the handle (5) is provided with anti-slip texture.

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