Efficient screening device for corn seeds

Abstract

The utility model relates to the technical field of screening, in particular to an efficient corn seed screening device which comprises an upper cylinder and a lower cylinder, a feeding port is arranged on the upper cylinder, a first residue discharge port is arranged at the lower end of the upper cylinder, and a second residue discharge port is arranged on the lower cylinder. A rotating cylinder is arranged in the upper cylinder body, the upper end of the rotating cylinder is rotationally connected with the top wall of the upper cylinder body through a bearing, and the lower end of the rotating cylinder penetrates through the upper cylinder body and then is communicated with the lower cylinder body, and the lower end of the rotating cylinder is rotationally connected with the top wall of the lower cylinder body through a bearing; first screen holes are distributed in the rotary drum located in the upper drum body, a first bevel gear is fixed to the rotary drum located between the upper drum body and the lower drum body, the first bevel gear is meshed with a second bevel gear, the second bevel gear is connected with a stepping motor, a screen is arranged in the lower drum body, second screen holes of the screen are smaller than the first screen holes, and a discharging port is formed in the side wall, corresponding to the screen, of the lower drum body. According to the screening device, after large-particle impurities of materials are screened, small-particle impurities can be screened, the screening effect is good, and the screening efficiency is high.

Description

Technical Field

[0001] This utility model belongs to the field of screening technology, specifically relating to a high-efficiency screening device for corn seeds. Background Technology

[0002] Corn is an annual herbaceous plant belonging to the genus Zea in the family Poaceae. Before planting in agricultural production, corn seeds need to be screened to remove impurities. Impurities in corn seeds vary in size, with large particles larger than the corn seed and small particles smaller than the seed mixed together. Existing corn seed screening devices are not suitable for effectively screening these impurities, resulting in poor screening efficiency and low removal efficiency. Therefore, a high-efficiency corn seed screening device is needed to solve the above-mentioned technical problems. Utility Model Content

[0003] To address the aforementioned deficiencies in existing technologies, this utility model provides a high-efficiency corn seed screening device, comprising an upper cylinder and a lower cylinder. The upper cylinder is fixed above the lower cylinder by a bracket. The upper cylinder has a feed inlet and a first slag discharge port at its lower end. The lower cylinder has a second slag discharge port. A rotating cylinder is installed inside the upper cylinder. The upper end of the rotating cylinder is rotatably connected to the top wall of the upper cylinder via a bearing. The lower end of the rotating cylinder passes through the upper cylinder and communicates with the lower cylinder. The lower end of the rotating cylinder is rotatably connected to the top wall of the lower cylinder via a bearing.

[0004] The rotating drum inside the upper cylinder is covered with screen holes one. A bevel gear one is fixed on the rotating drum between the upper and lower cylinders. The bevel gear one meshes with a bevel gear two. The bevel gear two is connected to a stepper motor. A screen is provided inside the lower cylinder. The screen holes two of the screen are smaller than the screen holes one. A discharge port is provided on the side wall of the lower cylinder corresponding to the screen.

[0005] Preferably, a stirring rod is fixed on the outer wall of the rotating cylinder inside the upper cylinder.

[0006] Preferably, the lower end of the rotating drum is provided with a conical cloth block, the cloth block is fixedly connected to the inner wall of the rotating drum by a fixing rod, the lower end of the cloth block is fixedly connected to a vertical rod, a scraper rod is fixed on the vertical rod, and the scraper rod cooperates with the screen.

[0007] Preferably, the screen is a vibrating screen.

[0008] Preferably, the bottom of the upper cylinder is conical, and the conical bottom is fitted with a scraper, which is fixedly connected to the outer wall of the rotating cylinder.

[0009] This invention also includes other components that enable the efficient corn seed screening device to function properly, all of which are conventional techniques in the art. Furthermore, devices or components not specified in this invention, such as vibrating screens and bearings, all employ conventional techniques and equipment in the art.

[0010] The beneficial effects of this utility model are: it can screen materials for large particulate impurities first, and then screen for small particulate impurities, resulting in good screening effect and high screening efficiency. Attached Figure Description

[0011] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0012] Figure 1 This is a schematic diagram of the structure of a high-efficiency corn seed screening device according to an embodiment of the present invention.

[0013] In the diagram: 1. Upper cylinder; 2. Rotating cylinder; 3. Screen hole one; 4. Feed inlet; 5. Bevel gear one; 6. Discharge outlet; 7. Bevel gear two; 8. Stepper motor; 9. Support; 10. Fixing rod; 11. Fabric block; 12. Vertical rod; 13. Scraper rod; 14. Screen; 15. Slag discharge port two; 16. Stirring rod; 17. Scraper plate; 18. Lower cylinder; 19. Slag discharge port one. Detailed Implementation

[0014] The present invention will now be clearly described with reference to the accompanying drawings and specific embodiments. This description is merely for explaining the present invention and is not intended to limit it. Any modifications, equivalent substitutions, improvements, etc., made by those skilled in the art based on the embodiments of the present invention without inventive effort to obtain all other embodiments should be included within the protection scope of the present invention.

[0015] Example

[0016] like Figure 1 As shown, this utility model provides a high-efficiency corn seed screening device, including an upper cylinder 1 and a lower cylinder 18. The upper cylinder 1 is fixed above the lower cylinder 18 by a bracket 9. The upper cylinder 1 is provided with a feed inlet 4 and a first slag discharge port at its lower end. The lower cylinder 18 is provided with a second slag discharge port 15. A rotating cylinder 2 is provided inside the upper cylinder 1. The upper end of the rotating cylinder 2 is rotatably connected to the top wall of the upper cylinder 1 by a bearing. The lower end of the rotating cylinder 2 passes through the upper cylinder 1 and communicates with the lower cylinder 18. The lower end of the rotating cylinder 2 is rotatably connected to the top wall of the lower cylinder 18 by a bearing.

[0017] The rotating drum 2 located inside the upper cylinder 1 is covered with screen holes 3. A bevel gear 5 is fixed on the rotating drum 2 located between the upper cylinder 1 and the lower cylinder 18. The bevel gear 5 meshes with a bevel gear 7. The bevel gear 7 is connected to a stepper motor 8. A screen 14 is provided inside the lower cylinder 18. The screen holes 2 of the screen 14 are smaller than the screen holes 3. A discharge port 6 is provided on the side wall of the lower cylinder 18 corresponding to the screen 14. A switch valve is provided at the discharge port.

[0018] A stirring rod 16 is fixed on the outer wall of the rotating drum 2 located inside the upper drum 1. The stirring rod can stir the corn seeds in the upper drum when the drum rotates, making the screening of corn seeds more efficient. Large particles of impurities larger than corn seeds remain in the upper drum and are discharged through the first discharge port after screening. Corn seeds and small particles of impurities enter the rotating drum through the first screen and fall into the lower drum. The screen in the lower drum screens out the small particles of impurities and discharges them through the second discharge port. The screened corn seeds are discharged from the discharge port.

[0019] The lower end of the rotating drum 2 is provided with a conical material block 11. The material block 11 is fixedly connected to the inner wall of the rotating drum 2 by a fixing rod 10. A vertical rod 12 is fixedly connected to the lower end of the material block 11, and a scraper rod 13 is fixed on the vertical rod 12. The scraper rod 13 cooperates with the screen 14. This setting can distribute the material falling into the lower drum body more evenly when it falls on the screen.

[0020] The screen 14 is a vibrating screen. The vibrating screen can make the screening of the screen more efficient.

[0021] The bottom of the upper cylinder 1 is conical, and a scraper 17 is fitted to the conical bottom. The scraper 17 is fixedly connected to the outer wall of the rotating cylinder 2. This design allows the scraper to stir the material on the screen and clean the screen holes as it rotates with the cloth block, reducing clogging and further improving the screening effect and efficiency.

[0022] Working principle: The corn seeds to be screened enter the upper cylinder through the feed inlet. The stepper motor drives the first bevel gear to rotate, which in turn drives the second bevel gear to rotate, causing the drum to rotate. During the rotation, the stirring rod stirs the corn seeds in the upper cylinder, causing the corn seeds and small particles of impurities to enter the drum. Large particles of impurities remain in the upper cylinder and are discharged from the first slag outlet. The corn seeds and small particles of impurities that have entered the drum are evenly sprinkled onto the screen in the lower cylinder by the cloth block and screened by the screen. The screen filters out the small particles of impurities and discharges them from the second slag outlet. The screened corn seeds are discharged from the discharge outlet.

[0023] The vibrating screen, switching valve, stepper motor, etc. in this embodiment are all existing technologies. This application does not make any improvements to them, but only utilizes their existing functions. For their specific structure and principle, please refer to the product manual or existing technical data, which are all existing technologies.

[0024] The embodiments of this utility model have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A high-efficiency corn seed screening device, comprising an upper cylinder and a lower cylinder, wherein the upper cylinder is fixed above the lower cylinder by a bracket, the upper cylinder is provided with a feed inlet, a first discharge outlet is provided at the lower end of the upper cylinder, and a second discharge outlet is provided on the lower cylinder; characterized in that: The upper cylinder is equipped with a rotating cylinder. The upper end of the rotating cylinder is rotatably connected to the top wall of the upper cylinder through a bearing. The lower end of the rotating cylinder passes through the upper cylinder and communicates with the lower cylinder. The lower end of the rotating cylinder is rotatably connected to the top wall of the lower cylinder through a bearing. The rotating drum inside the upper cylinder is covered with screen holes one. A bevel gear one is fixed on the rotating drum between the upper and lower cylinders. The bevel gear one meshes with a bevel gear two. The bevel gear two is connected to a stepper motor. A screen is provided inside the lower cylinder. The screen holes two of the screen are smaller than the screen holes one. A discharge port is provided on the side wall of the lower cylinder corresponding to the screen.

2. The high-efficiency corn seed screening device according to claim 1, characterized in that: A stirring rod is fixed on the outer wall of the rotating cylinder inside the upper cylinder.

3. The high-efficiency corn seed screening device according to claim 1, characterized in that: The lower end of the rotating drum is provided with a conical cloth block. The cloth block is fixedly connected to the inner wall of the rotating drum by a fixing rod. A vertical rod is fixedly connected to the lower end of the cloth block. A scraper rod is fixed on the vertical rod and cooperates with the screen.

4. The high-efficiency corn seed screening device according to claim 1, characterized in that: The screen is a vibrating screen.

5. The high-efficiency corn seed screening device according to claim 1, characterized in that: The bottom of the upper cylinder is conical, and a scraper is fitted to the conical bottom. The scraper is fixedly connected to the outer wall of the rotating cylinder.

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