A corn seed quality screening and grading device

Abstract

This utility model relates to the field of screening and grading, and discloses a corn seed quality screening and grading device, including a tank. A discharge port is fixedly connected to the outer wall of the tank. A baffle is slidably connected to the inner wall of the tank. A threaded rod is fixedly connected to the top of the outer wall of the baffle. A bolt is threaded onto the outer wall of the threaded rod. A motor is fixedly connected to the top of the outer wall of the tank. The output shaft of the motor is connected to a screening plate via a vibration assembly. A pressing block is fixedly connected to the bottom of the outer wall of the screening plate. A protrusion is fixedly connected to the inner wall of the tank. A retaining ring is engaged at the bottom of the outer wall of the tank. In this utility model, by setting up a support frame, retaining ring, tank, and limiting assembly, when the discharge port position does not meet the material receiving requirements, the limiting block is released by manually sliding up a limiting switch. Then, the tank is manually rotated to move the discharge port to the desired position, achieving manual and rapid adjustment of the discharge position and improving screening and grading efficiency.

Description

Technical Field

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

[0002] The main purpose of screening and grading corn seeds is to improve the overall quality of the seeds and ensure their uniformity and consistency so that they can be sown in a mechanized, single-seed precision manner. By screening, defective seeds with insect damage, breakage, and impurities are removed, which can improve the germination rate and vigor of the seeds, thereby increasing the emergence rate and final yield in the field. In addition, graded seeds are easier to store and transport, which helps to extend the shelf life of the seeds.

[0003] Existing corn seed quality screening and grading equipment mainly relies on manual labor, including visual inspection, manual selection, and gravity separation.

[0004] Existing corn seed quality screening and grading devices typically use a fixed-direction discharge port. When the receiving direction cannot meet the requirements of a large frame, the discharge port cannot be adjusted to the required angle, resulting in only small amounts of material being received multiple times, which reduces screening efficiency. Therefore, a corn seed quality screening and grading device is proposed to solve the above problems. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a corn seed quality screening and grading device, which aims to improve the problem of the inability to adjust the discharge port angle in the prior art.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a corn seed quality screening and grading device, comprising a tank, a discharge port fixedly connected to the outer wall of the tank, a baffle slidably connected to the inner wall of the tank, a threaded rod fixedly connected to the top of the outer wall of the baffle, a bolt threadedly connected to the outer wall of the threaded rod, a motor fixedly connected to the top of the outer wall of the tank, a screening plate connected to the output shaft of the motor via a vibration assembly, a pressing block fixedly connected to the bottom of the outer wall of the screening plate, a protrusion fixedly connected to the inner wall of the tank, a retaining ring snapped into the bottom of the outer wall of the tank, a support frame fixedly connected to the outer wall of the retaining ring, and a limit component provided on the outer wall of the support frame.

[0007] As a further description of the above technical solution: The vibration assembly includes a connecting shaft, the top of the outer wall of the connecting shaft is fixedly connected to the output shaft of the motor, a directional rod is fixedly connected to the bottom of the outer wall of the connecting shaft, and a compression spring is fixedly connected to the bottom of the outer wall of the connecting shaft.

[0008] As a further description of the above technical solution: The limiting component includes a limiting frame, the top of the outer wall of the limiting frame is fixedly connected to the outer side of the support frame, the inner wall of the limiting frame is slidably connected to a limiting block, the bottom of the outer wall of the limiting block is fixedly connected to a limiting switch, and a limiting groove is formed at the bottom of the outer wall of the tank.

[0009] As a further description of the above technical solution: The outer wall of the threaded rod is slidably connected to the inner wall of the top of the tank, and the inner side of the outer wall of the bolt is in contact with the outer wall of the tank.

[0010] As a further description of the above technical solution: The outer wall of the screening plate is slidably connected to the inner wall of the tank, and the bottom of the outer wall of the extrusion block is in contact with the protrusion.

[0011] As a further description of the above technical solution: The bottom end of the compression spring is fixedly connected to the top of the outer wall of the screening plate, and the outer wall of the directional rod is slidably connected to the top inner wall of the screening plate.

[0012] As a further description of the above technical solution: The outer wall of the limiting block is slidably connected to the inner wall of the support frame, and the outer wall of the limiting switch is slidably connected to the inner wall of the limiting frame.

[0013] As a further description of the above technical solution: The bottom end of the outer wall of the limiting block is engaged with the inner wall of the limiting groove.

[0014] This utility model has the following beneficial effects: 1. In this utility model, by setting a support frame, a retaining ring, a tank body, and a limiting component, when the discharge port position does not meet the material receiving requirements, the limiting block is released by manually sliding the limit switch upward, and then the tank body is manually rotated to move the discharge port to the required position, thereby realizing manual and rapid adjustment of the discharge position and improving screening and grading efficiency.

[0015] 2. In this utility model, by setting up a motor, vibration component, extrusion block, protrusion, and screening plate, when screening corn seeds, the motor is turned on to drive the connecting shaft to rotate, which in turn drives the directional rod to rotate, which in turn drives the screening plate to rotate, and the screening plate drives the extrusion block to repeatedly contact the protrusion, thereby achieving a short-distance, high-frequency vibration effect, accelerating high-quality screening, and improving screening and grading efficiency. Attached Figure Description

[0016] Figure 1 This is a three-dimensional schematic diagram of the tank body of a corn seed quality screening and grading device proposed in this utility model. Figure 2 This is a three-dimensional cross-sectional view of the tank body of a corn seed quality screening and grading device proposed in this utility model. Figure 3 This is a three-dimensional schematic diagram of a screening plate for a corn seed quality screening and grading device proposed in this utility model. Figure 4 This utility model proposes a corn seed quality screening and grading device. Figure 2 Enlarged 3D diagram of part A; Figure 5 This is a three-dimensional cross-sectional view of the limiting frame of a corn seed quality screening and grading device proposed in this utility model; Figure 6 This utility model proposes a corn seed quality screening and grading device. Figure 5 Enlarged 3D schematic diagram of part B.

[0017] Legend: 1. Tank body; 2. Discharge port; 3. Baffle; 4. Threaded rod; 5. Bolt; 6. Motor; 7. Screening plate; 8. Extrusion block; 9. Protrusion; 10. Snap ring; 11. Support frame; 12. Connecting shaft; 13. Directional rod; 14. Compression spring; 15. Limit frame; 16. Limit block; 17. Limit switch; 18. Limit groove. Detailed Implementation

[0018] 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.

[0019] Reference Figures 1-3This utility model provides an embodiment of a corn seed quality screening and grading device, comprising a tank 1, which is flat-bottomed and conical in shape to facilitate the natural downward sliding of corn seeds. An opening at the top is provided for feeding raw materials into the tank 1. A discharge port 2 is fixedly connected to the outer wall of the tank 1, with two sets on the sides and one set at the bottom to achieve a three-stage screening effect. A baffle 3 is slidably connected to the inner wall of the tank 1, which temporarily blocks the first and second stages of screening to prevent smaller corn seeds from being separated from the discharge port 2 before they fall. A threaded rod 4 is fixedly connected to the top of the outer wall of the baffle 3, which is used for manual external movement to open and close the baffle 3. A bolt 5 is threaded onto the outer wall of the threaded rod 4, which is used to rotate and fit the tank 1 to effectively close or open the baffle 3, preventing shaking or opening under force. A motor 6 is fixedly connected to the top of the outer wall of the tank 1. The motor 6 is existing technology and will not be described in detail; it drives the screening plate 7 for screening operations. The output shaft of the motor 6 passes through... The vibrating assembly is connected to a screening plate 7, which is conical in shape to allow corn seeds to slide naturally outwards. Opening the baffle 3 enables automatic discharge. An extrusion block 8 is fixedly connected to the bottom of the outer wall of the screening plate 7. Two opposing sets of the extrusion block 8 are arranged to repeatedly contact the protrusion 9, achieving a slight vibration effect. Several sets of protrusion 9 are fixedly connected to the inner wall of the tank body 1, and are semi-circular in shape to prevent jamming due to direct contact with the extrusion block 8. A retaining ring 10 is engaged at the bottom of the outer wall of the tank body 1. The retaining ring 10 is used to keep the tank 1 stable while allowing the tank 1 to rotate freely through the limiting component. The outer wall of the retaining ring 10 is fixedly connected to the support frame 11, which is used to support the tank 1 and provide it with support force. The outer wall of the support frame 11 is provided with the limiting component. The outer wall of the threaded rod 4 is slidably connected to the inner wall of the top of the tank 1. The inner side of the outer wall of the bolt 5 is in contact with the outer wall of the tank 1. The outer wall of the screening plate 7 is slidably connected to the inner wall of the tank 1. The bottom of the outer wall of the extrusion block 8 is in contact with the protrusion 9.

[0020] Reference Figures 2-4 The vibration assembly includes a connecting shaft 12, which provides a fixing point and opposing extrusion force for the compression spring 14. The top of the outer wall of the connecting shaft 12 is fixedly connected to the output shaft of the motor 6. A guide rod 13 is fixedly connected to the bottom of the outer wall of the connecting shaft 12. A guide block is provided on the outer wall of the guide rod 13 to keep the screening plate 7 sliding up and down while rotating with the connecting shaft 12. The compression spring 14 is fixedly connected to the bottom of the outer wall of the connecting shaft 12. Through the opposing extrusion force between the compression spring 14 and the connecting shaft 12, the extrusion block 8 contacts the protrusion 9 and bounces back to the bottom, achieving a vibration effect through reciprocating motion. The bottom end of the compression spring 14 is fixedly connected to the top of the outer wall of the screening plate 7, and the outer wall of the guide rod 13 is slidably connected to the top inner wall of the screening plate 7.

[0021] Reference Figures 5-6The limiting component includes a limiting frame 15, which is semi-circular in shape to keep the limiting block 16 sliding stably along the inner wall and provide it with a recovery space. The top of the outer wall of the limiting frame 15 is fixedly connected to the outer side of the support frame 11. The inner wall of the limiting frame 15 is slidably connected to the limiting block 16, which is semi-circular in shape to engage with the limiting groove 18 to fix the tank 1. The bottom of the outer wall of the limiting block 16 is fixedly connected to a limiting switch 17, which is used to manually release the limiting on the outer wall for easy manual operation. The bottom of the outer wall of the tank 1 has a limiting groove 18, which is provided in several sets to engage the limiting block 16 in multiple positions to change the angle between the tank 1 and the outlet 2. The outer wall of the limiting block 16 is penetrating and slidably connected to the inner wall of the support frame 11. The outer wall of the limiting switch 17 is slidably connected to the inner wall of the limiting frame 15. The bottom of the outer wall of the limiting block 16 is engaged with the inner wall of the limiting groove 18.

[0022] Working principle: When the discharge port 2 does not meet the material receiving requirements, the limit switch 17 is manually slid upward to drive the limit block 16 to disengage from the limit groove 18 to release the limit. Then, the tank body 1 is manually rotated to drive the discharge port 2 to the required position. Then, the limit switch 17 is slid downward to drive the limit block 16 to engage with the corresponding limit groove 18. Then, the bolt 5 is manually rotated to release the limit. Then, the threaded rod 4 is slid to drive the baffle 3 to open the discharge port 2. Then, the motor 6 is turned on to drive the screening plate 7 to separate the corn seeds from the tank body 1 through the discharge port 2. This allows for manual and rapid adjustment of the position of the discharge port 2, improving screening and grading efficiency.

[0023] When screening corn seeds, the motor 6 is turned on, which drives the connecting shaft 12 to rotate. The connecting shaft 12 drives the directional rod 13 to rotate, which in turn drives the screening plate 7 to rotate. The screening plate 7 drives the pressing block 8 to rotate, and the pressing block 8 repeatedly releases the protrusion 9 to achieve a short-distance, high-frequency vibration effect, thereby accelerating high-quality screening and improving screening and grading efficiency.

[0024] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. 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 corn seed quality screening and grading device, comprising a tank (1), characterized in that: The outer wall of the tank (1) is fixedly connected to a discharge port (2), the inner wall of the tank (1) is slidably connected to a baffle (3), the top of the outer wall of the baffle (3) is fixedly connected to a threaded rod (4), the outer wall of the threaded rod (4) is threadedly connected to a bolt (5), the top of the outer wall of the tank (1) is fixedly connected to a motor (6), the output shaft of the motor (6) is connected to a screening plate (7) through a vibration assembly, the bottom of the outer wall of the screening plate (7) is fixedly connected to an extrusion block (8), the inner wall of the tank (1) is fixedly connected to a protrusion (9), the bottom of the outer wall of the tank (1) is snapped with a retaining ring (10), the outer wall of the retaining ring (10) is fixedly connected to a support frame (11), and the outer wall of the support frame (11) is provided with a limit assembly.

2. The corn seed quality screening and grading device according to claim 1, characterized in that: The vibration assembly includes a connecting shaft (12), the top of the outer wall of the connecting shaft (12) is fixedly connected to the output shaft of the motor (6), the bottom of the outer wall of the connecting shaft (12) is fixedly connected to a directional rod (13), and the bottom of the outer wall of the connecting shaft (12) is fixedly connected to a compression spring (14).

3. The corn seed quality screening and grading device according to claim 1, characterized in that: The limiting component includes a limiting frame (15), the top of the outer wall of the limiting frame (15) is fixedly connected to the outer side of the support frame (11), the inner wall of the limiting frame (15) is slidably connected to a limiting block (16), the bottom of the outer wall of the limiting block (16) is fixedly connected to a limiting switch (17), and a limiting groove (18) is opened at the bottom of the outer wall of the tank (1).

4. The corn seed quality screening and grading device according to claim 1, characterized in that: The outer wall of the threaded rod (4) is slidably connected to the inner wall of the top of the tank (1), and the inner side of the outer wall of the bolt (5) is in contact with the outer wall of the tank (1).

5. The corn seed quality screening and grading device according to claim 1, characterized in that: The outer wall of the screening plate (7) is slidably connected to the inner wall of the tank (1), and the bottom of the outer wall of the extrusion block (8) is in contact with the protrusion (9).

6. The corn seed quality screening and grading device according to claim 2, characterized in that: The bottom end of the compression spring (14) is fixedly connected to the top of the outer wall of the screening plate (7), and the outer wall of the directional rod (13) is slidably connected to the top inner wall of the screening plate (7).

7. The corn seed quality screening and grading device according to claim 3, characterized in that: The outer wall of the limiting block (16) is slidably connected to the inner wall of the support frame (11), and the outer wall of the limiting switch (17) is slidably connected to the inner wall of the limiting frame (15).

8. The corn seed quality screening and grading device according to claim 3, characterized in that: The bottom of the outer wall of the limiting block (16) is engaged with the inner wall of the limiting groove (18).

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