Crop seed size screening equipment

Abstract

The utility model discloses crop seed size screening equipment which comprises a support, an arc-shaped screening plate is fixedly connected into the support, a plurality of sets of trapezoidal screening openings are formed in the arc-shaped screening plate, a supporting plate is fixedly connected to the support, the bottom face of the supporting plate is fixedly connected with the upper end face of the arc-shaped screening plate, and a material box is fixedly connected to the upper end face of the supporting plate. A discharging opening is formed in the bottom of the material box, two backflow shells are fixedly connected to the arc-shaped sieve plate, and the back faces of the two backflow shells are jointly and fixedly connected with a feeding shell; crop seeds needing to be screened can be stored through the arranged material box, after the seeds are conveyed to the arc-shaped screen plate through cooperation of the arc-shaped screen plate, the seeds can be screened through the trapezoidal screen openings formed in the surface of the arc-shaped screen plate and the gradient of the arc-shaped screen plate, and due to the shape of the arc-shaped screen plate, the seeds can be screened conveniently. And the seeds cannot be accumulated on the surface of the seed screening device, so that the seeds can be better screened, and the screening effect is guaranteed.

Description

Technical Field

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

[0002] Seed size screening is an important part of seed treatment. By using sieves with different aperture sizes to screen seeds, seeds of different sizes can be separated to ensure that the seeds are of uniform size when sowing. This is beneficial to improving sowing quality and the consistency of crop growth, facilitating mechanized sowing, and also removing damaged, diseased, pest-infested, and weed seeds, thereby increasing seed germination rate and crop yield.

[0003] A search revealed a utility model patent with publication number CN213377686U, which discloses a crop seed size screening device, comprising a cylinder and a base plate. The cylinder is located above the base plate, and several screening holes are formed on the outer periphery of the cylinder. The diameter of the screening holes gradually increases from right to left. Spiral blades are fixed to the inner wall of the cylinder. A coaxial circular plate is provided on the right side of the cylinder. The left side of the circular plate and the right end of the cylinder are rotatably connected by a bearing. A motor is fixed to the left side of the circular plate, and a coaxial disk is fixed on the output shaft of the motor. The edge of the left side of the disk is rotatably connected to one end of a connecting rod, and the other end of the connecting rod is rotatably connected to the outer periphery of the cylinder.

[0004] However, the above design still has shortcomings. The design uses a combination of spiral blades, cylinder and screening holes to screen seeds. This causes the seeds to accumulate inside the structure during the screening and conveying process. As a result, only the seeds on the surface can be screened, while the seeds in the middle cannot be screened, and the screening effect is not ideal. Utility Model Content

[0005] The purpose of this invention is to provide a crop seed size screening device to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a crop seed size screening device, including a support frame, an arc-shaped sieve plate fixedly connected inside the support frame, a plurality of trapezoidal sieve openings on the arc-shaped sieve plate, a support plate fixedly connected to the support frame, the bottom surface of the support plate fixedly connected to the upper end surface of the arc-shaped sieve plate, a material box fixedly connected to the upper end surface of the support plate, a discharge port opened at the bottom of the material box, two return shells fixedly connected to the arc-shaped sieve plate, a feeding shell fixedly connected to the back of the two return shells, and a conveying assembly disposed inside the feeding shell.

[0007] The bottom of the material box is sloping, and each trapezoidal screen opening gradually increases in size from the inside to the outside.

[0008] The support has an opening at the bottom, and several sets of collection boxes are placed inside the support. Each set of collection boxes is located below the arc-shaped sieve plate.

[0009] The conveying assembly includes a vertical cylinder fixedly connected inside the upper material shell. The bottom of the vertical cylinder has multiple sets of inlets, and the top of the vertical cylinder has an outlet. A rectangular guide tube is fixedly connected inside the outlet, and the other end of the rectangular guide tube extends to the top of the material box.

[0010] The vertical cylinder is rotatably connected to a spiral conveyor shaft, and a drive motor is fixedly connected to the top of the vertical cylinder. The output end of the drive motor is fixedly connected to the top of the spiral conveyor shaft.

[0011] The outer surface of the vertical cylinder is fixedly connected to two mounting brackets, and one side of each mounting bracket is fixedly connected to the material box.

[0012] The feed shell is fixedly connected to a guide plate, which is sleeved on the bottom of the vertical cylinder.

[0013] A control box is fixedly connected to the bracket, and the control box is electrically connected to the drive motor via wires.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] This invention features a hopper for storing crop seeds that require screening. The seeds are conveyed onto an arc-shaped screen plate, where trapezoidal sieve openings and the plate's slope facilitate screening. The arc shape prevents seed accumulation, ensuring efficient screening. A reflux shell, along with the feeding shell and conveying components, enables continuous seed screening, guaranteeing high quality. The system boasts a high degree of automation and ease of operation. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of a crop seed size screening device according to the present invention;

[0017] Figure 2 This is a side view of a crop seed size screening device according to the present invention;

[0018] Figure 3 This is a three-dimensional structural diagram of the reflux shell in a crop seed size screening device according to the present invention;

[0019] Figure 4This is a cross-sectional view of a crop seed size screening device according to the present invention;

[0020] Figure 5 This is a three-dimensional structural diagram of the arc-shaped sieve plate in a crop seed size screening device of this utility model;

[0021] Figure 6 This is a three-dimensional structural diagram of the drive motor in a crop seed size screening device according to the present invention.

[0022] In the diagram: 1. Support frame; 2. Control box; 3. Material bin; 4. Vertical cylinder; 5. Drive motor; 6. Mounting frame; 7. Rectangular guide tube; 8. Support plate; 9. Arc-shaped screen plate; 10. Collection box; 11. Return shell; 12. Feeding shell; 13. Guide plate; 14. Trapezoidal screen opening; 15. Screw conveyor shaft; 16. Inlet; 17. Outlet. Detailed Implementation

[0023] 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.

[0024] Please see Figure 1-6 This utility model provides a technical solution: a crop seed size screening device, including a support 1, which is the main structure of the device. An arc-shaped sieve plate 9 is fixedly connected inside the support 1. Its shape can prevent seeds from accumulating. Several sets of trapezoidal sieve openings 14 are opened on the arc-shaped sieve plate 9, which can allow seeds to pass through the trapezoidal sieve openings 14 to complete the screening. A support plate 8 is fixedly connected to the support 1. The bottom surface of the support plate 8 is fixedly connected to the upper end surface of the arc-shaped sieve plate 9. A material box 3 is fixedly connected to the upper end surface of the support plate 8, which can be used to store the seeds to be screened. A discharge port 17 is opened at the bottom of the material box 3, which can allow the seeds to leak out for screening. Two return shells 11 are fixedly connected to the arc-shaped sieve plate 9, which can collect the seeds that slide off the arc-shaped sieve plate 9. The back of the two return shells 11 are fixedly connected to the upper shell 12. The seeds inside the return shells 11 can enter the upper shell 12. A conveying component is set inside the upper shell 12, which can send the seeds in the upper shell 12 into the material box 3.

[0025] The bottom of the feed box 3 is designed as a slope, and each trapezoidal sieve opening 14 gradually increases in size from the inside to the outside, so that crop seeds of different sizes can be screened out.

[0026] The support 1 has a placement opening at its bottom, and several sets of collection boxes 10 are placed inside the support 1. Each set of collection boxes 10 is located below the arc-shaped sieve plate 9, which can collect the screened seeds for subsequent processing.

[0027] The conveying assembly includes a vertical cylinder 4 fixedly connected inside the upper material shell 12. The bottom of the vertical cylinder 4 has multiple sets of inlets 16, and the top of the vertical cylinder 4 has an outlet. A rectangular conduit 7 is fixedly connected inside the outlet, and the other end of the rectangular conduit 7 extends to the top of the material box 3. Seeds inside the upper material shell 12 can enter the interior of the vertical cylinder 4 through the inlets 16.

[0028] The vertical cylinder 4 is rotatably connected to a spiral conveying shaft 15, and a drive motor 5 is fixedly connected to the top of the vertical cylinder 4. The output end of the drive motor 5 is fixedly connected to the top of the spiral conveying shaft 15. The drive motor 5 provides power to drive the spiral conveying shaft 15 to rotate in order to convey the seeds.

[0029] Two mounting brackets 6 are fixedly connected to the outer surface of the vertical cylinder 4. One side of each mounting bracket 6 is fixedly connected to the material box 3. The mounting brackets 6 can be used to reinforce the vertical cylinder 4, making its installation more stable and reliable.

[0030] The feed shell 12 is fixedly connected to the inside of a guide plate 13, which is sleeved on the bottom of the vertical cylinder 4, so that the seeds inside the feed shell 12 can enter the vertical cylinder 4 better.

[0031] The support 1 is fixedly connected to the control box 2, which is electrically connected to the drive motor 5 via wires, facilitating the operation and control of the device.

[0032] Working principle: When in use, the device can be placed directly in the location of use and connected to the power supply. Then, the operator can put the crop seeds to be screened into the inside of the material box 3. The seeds can fall onto the arc-shaped screen plate 9 through the discharge port 17 at the bottom of the material box 3. Utilizing the shape and slope of the arc-shaped screen plate 9 itself, the seeds can move on its surface. The trapezoidal screen opening 14 allows the seeds to leak downwards, thus completing the screening of the seeds. During the screening process, some seeds will fall into the return shell 11. Utilizing the slope of the return shell 11, the seeds can slide into the upper material shell 12. Inside the upper material shell 12, the seeds can be fed back into the material box 3 through the set conveying components to circulate and screen the seeds, fully ensuring the screening quality.

[0033] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A crop seed size sorting apparatus comprising a support (1), characterised in that: The inside of the support (1) is fixedly connected with an arc-shaped sieve plate (9), a plurality of groups of trapezoidal sieve openings (14) are formed in the arc-shaped sieve plate (9), the support (1) is fixedly connected with a supporting plate (8), the bottom surface of the supporting plate (8) is fixedly connected with the upper end surface of the arc-shaped sieve plate (9), the upper end surface of the supporting plate (8) is fixedly connected with a material box (3), the bottom of the material box (3) is provided with a discharge port (17), the arc-shaped sieve plate (9) is fixedly connected with two reflux shells (11), the back surfaces of the two reflux shells (11) are fixedly connected with a feeding shell (12), and the inside of the feeding shell (12) is provided with a conveying assembly.

2. A crop seed size sorting apparatus according to claim 1, characterised in that: The bottom of the material box (3) is provided as a slope surface, and each trapezoidal sieve opening (14) gradually increases from inside to outside.

3. A crop seed size sorting apparatus as claimed in claim 1, wherein: The bottom of the support (1) is provided with a placing opening, and a plurality of groups of collecting boxes (10) are placed in the inside of the support (1), and each group of collecting boxes (10) is arranged below the arc-shaped sieve plate (9).

4. A crop seed size sorting apparatus as claimed in claim 1, wherein: The conveying assembly comprises a vertical cylinder (4) fixedly connected in the inside of the feeding shell (12), a plurality of groups of inlets (16) are formed in the bottom of the vertical cylinder (4), an outlet is formed in the top of the vertical cylinder (4), a rectangular conduit (7) is fixedly connected in the inside of the outlet, and the other end of the rectangular conduit (7) extends above the material box (3).

5. A crop seed size sorting apparatus according to claim 4, characterised in that: A spiral conveying shaft (15) is rotatably connected in the inside of the vertical cylinder (4), a driving motor (5) is fixedly connected with the top end of the vertical cylinder (4), and the output end of the driving motor (5) is fixedly connected with the top end of the spiral conveying shaft (15).

6. A crop seed size sorting apparatus according to claim 4, wherein: Two mounting frames (6) are fixedly connected with the outer surface of the vertical cylinder (4), and one side surface of each mounting frame (6) is fixedly connected with the material box (3).

7. A crop seed size sorting apparatus as claimed in claim 4, wherein: A guide plate (13) is fixedly connected in the inside of the feeding shell (12), and the guide plate (13) is sleeved on the bottom of the vertical cylinder (4).

8. A crop seed size sorting apparatus according to claim 5, wherein: The support (1) is fixedly connected with a control box (2), and the control box (2) is electrically connected with the driving motor (5) through wires.

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