Corn planter with seed screening function

Abstract

The utility model discloses a corn planter with a seed screening function, which relates to the technical field of agricultural equipment and comprises a frame and a seed box, the seed box is arranged at the upper end of the frame, land wheels are respectively arranged on two sides of the frame, a seeding component is arranged at the lower end of the seed box, a storage layer is arranged at the top end of the seed box, and the storage layer is arranged at the bottom end of the seed box. A seed screening layer is arranged in the middle of the seed box, a furrow opener is arranged at the bottom end of the seeding assembly and is arranged on a furrow opener support, the seed screening layer is provided with a large filter screen and a small filter screen, the large filter screen can filter large impurities existing in seeds, the large impurities are prevented from entering the seeding assembly, and the small filter screen is arranged on the seed screening layer. The seeds are wound on the seed shifting wheel to influence work; small particles are filtered by the small filter screen, so that the size uniformity of the sown seeds is ensured, and the emergence rate and the growth uniformity of the corn are improved.

Description

Technical Field

[0001] This utility model relates to the field of agricultural equipment technology, and in particular to a corn planter with seed screening function. Background Technology

[0002] With the development of agricultural modernization, the requirements for corn planters are becoming increasingly stringent. Traditional corn planters may lack or have inadequate seed screening functions, leading to uneven seed size and higher impurity levels during planting, which affects the emergence rate and uniformity of corn growth. Simultaneously, the efficiency and effectiveness of coordinated operations in the planting process, such as furrowing, seed distribution, and soil covering, need to be improved to enhance planting quality and work efficiency, reduce farmers' labor intensity, and meet the needs of large-scale agricultural production. This patent addresses this context by developing a corn planter capable of effectively screening seeds and achieving efficient and precise planting. Utility Model Content

[0003] To achieve the above objectives, this utility model provides the following technical solution: a corn planter with seed screening function, comprising a frame and a seed box, the seed box being disposed at the upper end of the frame, ground wheels being disposed on both sides of the frame, a sowing component being disposed at the lower end of the seed box, a storage layer being disposed at the top of the seed box, a seed screening layer being disposed in the middle of the seed box, a furrow opener being disposed at the bottom end of the sowing component, the furrow opener being disposed on a furrow opener support, a crossbar of the frame being disposed at the upper end of the furrow opener support, a ground wheel axle being disposed on the frame, ground wheels being disposed on the ground wheel axle, and a drive gear being disposed on both sides of the ground wheel axle;

[0004] The seed screening layer includes a screening chamber, a large filter screen, a small filter screen, a guide rod, a rotating motor, and an eccentric wheel. The large and small filter screens are arranged sequentially from top to bottom inside the screening chamber. The guide rod is located on both sides of the screening chamber, passing through the large and small filter screens and extending to the lower end of the small filter screen. A limiting plate is provided on the guide rod at the lower end of the small filter screen, and a second limiting plate is provided on the guide rod at the lower end of the large filter screen. Both the first and second limiting plates are fitted with springs. The top of the guide rod passes through the top of the screening chamber and extends to the outside of the screening chamber. A movable plate is provided on the guide rod at the top of the screening chamber. The rotating motor is located on both sides of the top of the screening chamber, and the eccentric wheel is located at the output end of the rotating motor. The eccentric wheel is located directly above the movable plate, and a second spring is provided between the movable plate and the top of the screening chamber. Elastic fixing members are provided on both sides of the large and small filter screens inside the screening chamber.

[0005] The top of the screening chamber is connected to the storage layer, and one side of the screening chamber is connected to the seeding component.

[0006] Preferably, the sowing assembly includes a seed-feeding wheel, a connecting shaft, a discharge hopper, a seed dispensing guide, and a seed dispensing pipe. Side plates are respectively provided on both sides of the bottom end of the seed box. Multiple discharge ports are provided at the bottom end of the seed box. The discharge hopper is located at the bottom end of the discharge ports. Both ends of the connecting shaft are rotatably mounted on the side plates. A seed-feeding wheel is respectively provided on the connecting shaft inside each discharge hopper. The seed dispensing guide is located at the bottom end of the discharge hopper. The seed dispensing pipe is located at the bottom end of the seed dispensing guide. The bottom end of the seed dispensing pipe is located inside the furrow opener.

[0007] Preferably, driven gears are provided at both ends of the connecting shaft, and the driven gears are connected to the driving gears by a chain.

[0008] Preferably, the elastic fastener includes a mounting base and three springs. The mounting base is fixed to the side wall of the screening chamber, and the three springs are disposed at the top of the mounting base. The tops of the plurality of three springs are respectively fixed to the large filter screen and the small filter screen.

[0009] Preferably, the screening chamber is provided with a discharge port, and guide grooves are symmetrically arranged on the outer wall of the screening chamber that is connected to the seeding component. A movable plate is arranged between the two guide grooves, and an electric telescopic rod for use with the movable plate is provided on the outer wall of the screening chamber. The output end of the electric telescopic rod is connected to the movable plate.

[0010] Preferably, the rear end of the frame is provided with a pressure roller assembly for use with the trencher. The pressure roller assembly includes a pressure roller, a pressure roller bracket, and a pressure roller support. The pressure roller support is disposed on the frame, the pressure roller bracket is disposed on the pressure roller support, and the pressure roller is disposed on the pressure roller support.

[0011] Preferably, a spring support rod is provided between the pressure roller support and the pressure roller bracket. The spring support rod is connected to the pressure roller via a rotating shaft. The pressure roller support is provided with a guide hole. The spring support rod passes through the guide hole and is movably connected to the pressure roller support. A spring is sleeved on the spring support rod.

[0012] Preferably, a collection box is provided at the bottom of the screening chamber, and an opening is provided on the screening chamber to be used in conjunction with the collection box.

[0013] Beneficial effects: Compared with the prior art, this utility model sets up a seed screening layer with a large filter and a small filter. The large filter can filter out larger impurities in the seeds, preventing them from entering the sowing component and getting tangled on the seed wheel, thus affecting the operation. The small filter filters out smaller particles, ensuring that the sown seeds are of uniform size and improving the emergence rate and uniform growth of corn.

[0014] The seed-dispensing wheel and other structural designs of the seed-dispensing components enable precise seeding. Combined with the furrow opener and pressure roller components, it ensures that seeds are sown at the appropriate depth and spacing, resulting in good soil covering and further improving sowing quality.

[0015] The electric telescopic rod and movable plate design on the screening chamber can flexibly adjust the connection between the screening chamber and the sowing component according to the seed screening situation and sowing needs; the spring support rod and spring four-equal structure in the pressure roller assembly can make the pressure roller adaptively adjust the pressure according to the ground conditions to ensure the soil covering effect;

[0016] A collection box is installed at the bottom of the screening chamber to facilitate the collection of screened impurities and unqualified seeds, keeping the equipment clean and facilitating subsequent processing. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model.

[0018] Figure 2 This is a partial structural schematic diagram of the present invention.

[0019] Figure 3 This is a cross-sectional view of the internal structure of the seed box of this utility model.

[0020] Figure 4 This is a cross-sectional view of the inside of the seed box of this utility model.

[0021] Figure 5 This is a partial structural diagram of the seed box of this utility model.

[0022] In the attached diagram: 1. Frame; 2. Seed box; 3. Ground wheel; 4. Seeding assembly; 5. Storage layer; 6. Furrow opener; 7. Furrow opener bracket; 8. Ground wheel shaft; 9. Drive gear; 10. Screening chamber; 11. Large filter screen; 12. Small filter screen; 13. Guide rod; 14. Rotating motor; 15. Eccentric wheel; 16. Limiting plate one; 17. Limiting plate two; 18. Spring one; 19. Movable plate; 20. Spring two; 21. Side plate; 22. Driven gear; 23. Chain; 24. Mounting base; 25. Spring three; 26. Guide groove; 27. Moving plate; 28. Electric telescopic rod; 29. ​​Pressure roller; 30. Pressure roller bracket; 31. Pressure roller support; 32. Spring support rod; 33. Spring four; 34. Collection box; 401. Discharge hopper; 402. Seed discharging guide; 403. Seed discharging pipe. Detailed Implementation

[0023] The technical solution of this patent will be further described in detail below with reference to specific embodiments.

[0024] Example

[0025] Please refer to the accompanying drawings in the specification. In this embodiment of the utility model, a corn planter with seed screening function includes a frame 1 and a seed box 2. The seed box 2 is located at the upper end of the frame 1. Ground wheels 3 are respectively arranged on both sides of the frame 1. A sowing component 4 is arranged at the lower end of the seed box 2. The top of the seed box 2 is a storage layer 5. The middle of the seed box 2 is a seed screening layer. A furrow opener 6 is arranged at the bottom end of the sowing component 4. The furrow opener 6 is arranged on a furrow opener support 7. The upper end of the furrow opener support 7 is arranged on the crossbar of the frame 1. A ground wheel axle 8 is arranged on the frame 1. The ground wheels 3 are respectively arranged on the ground wheel axle 8. A drive gear 9 is arranged on both sides of the ground wheel axle 8.

[0026] The seed screening layer includes a screening chamber 10, a large filter screen 11, a small filter screen 12, a guide rod 13, a rotating motor 14, and an eccentric wheel 15. The large filter screen 11 and the small filter screen 12 are arranged sequentially from top to bottom inside the screening chamber 10. The guide rod 13 is located on both sides of the screening chamber 10. The guide rod 13 passes through the large filter screen 11 and the small filter screen 12 and extends to the lower end of the small filter screen 12. A limiting plate 16 is provided on the guide rod 13 at the lower end of the small filter screen 12, and a limiting plate 17 is provided on the guide rod 13 at the lower end of the large filter screen 11. The limiting plate 16 and the limiting plate 17 are both provided in the guide rod 13. Spring 18 is fitted on each of the two 17. The top end of the guide rod 13 passes through the top end of the screening chamber 10 and extends to the outside of the screening chamber 10. A movable plate 19 is provided on the guide rod 13 at the top end of the screening chamber 10. The rotating motor 14 is respectively provided on both sides of the top end of the screening chamber 10. An eccentric wheel 15 is provided at the output end of the rotating motor 14. The eccentric wheel 15 is located directly above the movable plate 19. Spring 20 is provided between the movable plate 19 and the top of the screening chamber 10. Elastic fixing members are respectively provided on both sides of the large filter screen 11 and the small filter screen 12 inside the screening chamber 10.

[0027] The top of the screening chamber 10 is connected to the storage layer 5, and one side of the screening chamber 10 is connected to the seeding component 4.

[0028] The sowing assembly 4 includes a seed-feeding wheel, a connecting shaft, a discharge hopper 401, a seed dispensing guide 402, and a seed dispensing pipe 403. Side plates 21 are respectively provided on both sides of the bottom end of the seed box 2. Multiple discharge ports are provided at the bottom end of the seed box 2. The discharge hopper 401 is located at the bottom end of the discharge port. The two ends of the connecting shaft are respectively rotatably mounted on the side plates 21. A seed-feeding wheel is respectively provided on the connecting shaft inside each discharge hopper 401. The seed dispensing guide 402 is located at the bottom end of the discharge hopper 401. The seed dispensing pipe 403 is located at the bottom end of the seed dispensing guide 402. The bottom end of the seed dispensing pipe 403 is located inside the furrow opener 6.

[0029] Both ends of the connecting shaft are respectively provided with driven gears 22, and the driven gears 22 are connected to the driving gear 9 by a chain 23.

[0030] The elastic fastener includes a mounting base 24 and springs 25. The mounting base 24 is fixed to the side wall of the screening chamber 10, and the springs 25 are disposed at the top of the mounting base 24. The tops of the plurality of springs 25 are respectively fixed to the large filter screen 11 and the small filter screen 12.

[0031] The screening chamber 10 is provided with a discharge port. The outer wall of the screening chamber 10, which is connected to the seeding component 4, is symmetrically provided with guide grooves 26. A movable plate 27 is provided between the two guide grooves 26. An electric telescopic rod 28 is provided on the outer wall of the screening chamber 10 to cooperate with the movable plate 27. The output end of the electric telescopic rod 28 is connected to the movable plate 27.

[0032] The rear end of the frame 1 is provided with a pressure roller assembly for use with the trencher 6. The pressure roller assembly includes a pressure roller 29, a pressure roller bracket 30 and a pressure roller support 31. The pressure roller support 31 is disposed on the frame 1, the pressure roller bracket 30 is disposed on the pressure roller support 31, and the pressure roller 29 is disposed on the pressure roller support 31.

[0033] A spring support rod 32 is provided between the pressure roller support 31 and the pressure roller bracket 30. The spring support rod 32 is connected to the pressure roller 29 through a rotating shaft. The pressure roller support 31 is provided with a guide hole. The spring support rod 32 passes through the guide hole and is movably connected to the pressure roller support 31. A spring 33 is sleeved on the spring support rod 32.

[0034] A collection box 34 is provided at the bottom of the screening chamber 10. An opening is provided on the screening chamber 10 to be used with the collection box 34. After sowing, impurities and unqualified seeds in the collection box at the bottom of the screening chamber can be cleaned out, and the equipment can be cleaned and maintained for the next use.

[0035] Working Principle: Seed Screening Principle: A rotating motor drives an eccentric wheel to rotate. As the eccentric wheel rotates, it continuously presses against a movable plate, causing the movable plate to vibrate up and down. The movable plate is connected to the top of the screening chamber via a second spring. Simultaneously, a guide rod connected to the movable plate passes through both the large and small filter screens. Limiting plates one and two on the guide rod, along with spring one, work together to cause the large and small filter screens to vibrate as well. After the seeds enter the screening chamber from the storage layer, under the influence of vibration, the large filter screen first intercepts larger impurities. Qualified seeds fall through the large filter screen onto the small filter screen, where further screening occurs. Smaller impurities and unqualified seeds enter the bottom of the small filter screen, while qualified seeds are placed in the sowing assembly connected to the discharge port on one side of the screening chamber.

[0036] Sowing principle: When the ground wheel rolls on the ground, it drives the ground wheel axle to rotate. The driving gears on both sides of the ground wheel axle rotate accordingly. The driving gears drive the driven gears at both ends of the connecting shaft to rotate via a chain. The rotation of the connecting shaft in turn drives the seed-distributing wheel in the discharge hopper to rotate. The screened seeds fall into the discharge hopper, and the seed-distributing wheel pushes the seeds out of the discharge hopper. The seeds fall into the furrows opened by the furrow opener through the seed discharge guide and seed discharge pipe. Then, the pressure roller assembly covers and compacts the soil in the furrows after sowing.

[0037] In summary, this invention features a seed screening layer with both large and small filters. The large filter removes larger impurities from the seeds, preventing them from entering the sowing assembly and becoming entangled on the seed-feeding wheel, thus improving operation. The small filter removes smaller particles, ensuring uniform seed size and increasing corn germination rate and uniform growth. The seed-feeding wheel and other structural designs of the sowing assembly enable precise seed distribution. Combined with the furrow opener and pressure roller assembly, this ensures seeds are sown at appropriate depths and spacing, resulting in good soil covering and further improving sowing quality. The electric telescopic rod and movable plate design on the screening chamber allow for flexible adjustment of the connection between the screening chamber and the sowing assembly based on seed screening conditions and sowing needs. The spring support rod and spring-loaded structure in the pressure roller assembly allow the pressure roller to adaptively adjust pressure according to ground conditions, ensuring effective soil covering. A collection box at the bottom of the screening chamber facilitates the collection of screened impurities and unsuitable seeds, keeping the equipment clean and facilitating subsequent processing.

[0038] The above are merely preferred embodiments of this utility model. It should be noted that, for those skilled in the art, several modifications and improvements can be made without departing from the concept of this utility model, and these should also be considered within the scope of protection of this utility model. These will not affect the implementation effect of this utility model or the practicality of the patent.

Claims

1. A corn planter with seed screening function, characterized in that: The machine includes a frame (1) and a seed box (2). The seed box (2) is located at the upper end of the frame (1). Ground wheels (3) are respectively located on both sides of the frame (1). A sowing component (4) is located at the lower end of the seed box (2). The top of the seed box (2) is a storage layer (5). The middle of the seed box (2) is a seed screening layer. A furrow opener (6) is located at the bottom end of the sowing component (4). The furrow opener (6) is located on a furrow opener support (7). The upper end of the furrow opener support (7) is located on the crossbar of the frame (1). A ground wheel axle (8) is located on the frame (1). The ground wheels (3) are respectively located on the ground wheel axle (8). A drive gear (9) is respectively located on both sides of the ground wheel axle (8). The seed screening layer includes a screening chamber (10), a large filter (11), a small filter (12), a guide rod (13), a rotating motor (14), and an eccentric wheel (15). The large filter (11) and the small filter (12) are arranged sequentially from top to bottom inside the screening chamber (10). The guide rod (13) is located on both sides of the screening chamber (10). The guide rod (13) passes through the large filter (11) and the small filter (12) sequentially and extends to the lower end of the small filter (12). A limiting plate one (16) is provided on the guide rod (13) at the lower end of the small filter (12), and a limiting plate two (17) is provided on the guide rod (13) at the lower end of the large filter (11). The limiting plate one (16) and the limiting plate two (17) are connected to each other. Spring 1 (18) is fitted on each of the two position plates (17). The top end of the guide rod (13) passes through the top end of the screening chamber (10) and extends to the outside of the screening chamber (10). A movable plate (19) is provided on the guide rod (13) at the top end of the screening chamber (10). The rotating motor (14) is respectively provided on both sides of the top end of the screening chamber (10). The output end of the rotating motor (14) is provided with the eccentric wheel (15). The eccentric wheel (15) is located directly above the movable plate (19). Spring 2 (20) is provided between the movable plate (19) and the top of the screening chamber (10). Elastic fixing members are respectively provided on both sides of the large filter screen (11) and the small filter screen (12) inside the screening chamber (10). The top of the screening chamber (10) is connected to the storage layer (5), and one side of the screening chamber (10) is connected to the seeding component (4).

2. The corn planter with seed screening function according to claim 1, characterized in that: The sowing assembly (4) includes a seed-feeding wheel, a connecting shaft, a discharge hopper (401), a seed-discharging guide (402), and a seed-discharging tube (403). Side plates (21) are respectively provided on both sides of the bottom end of the seed box (2). Multiple discharge ports are provided at the bottom end of the seed box (2). The discharge hopper (401) is located at the bottom end of the discharge port. Both ends of the connecting shaft are rotatably mounted on the side plates (21). A seed-feeding wheel is respectively provided on the connecting shaft inside each discharge hopper (401). The seed-discharging guide (402) is located at the bottom end of the discharge hopper (401). The seed-discharging tube (403) is located at the bottom end of the seed-discharging guide (402). The bottom end of the seed-discharging tube (403) is located inside the furrow opener (6). Both ends of the connecting shaft are provided with driven gears (22), and the driven gears (22) are connected to the driving gear (9) by a chain (23).

3. The corn planter with seed screening function according to claim 1, characterized in that: The elastic fastener includes a mounting base (24) and a spring three (25). The mounting base (24) is fixed on the side wall of the screening chamber (10). The spring three (25) is disposed at the top of the mounting base (24). The tops of the multiple spring three (25) are respectively fixed to the large filter screen (11) and the small filter screen (12).

4. The corn planter with seed screening function according to claim 1, characterized in that: The screening chamber (10) is provided with a discharge port. The outer wall of the screening chamber (10) connected to the seeding component (4) is symmetrically provided with guide grooves (26). A moving plate (27) is provided between the two guide grooves (26). An electric telescopic rod (28) is provided on the outer wall of the screening chamber (10) to cooperate with the moving plate (27). The output end of the electric telescopic rod (28) is connected to the moving plate (27).

5. The corn planter with seed screening function according to claim 1, characterized in that: The rear end of the frame (1) is provided with a pressure roller assembly for use with the trencher (6). The pressure roller assembly includes a pressure roller (29), a pressure roller bracket (30) and a pressure roller support (31). The pressure roller support (31) is provided on the frame (1), the pressure roller bracket (30) is provided on the pressure roller support (31), and the pressure roller (29) is provided on the pressure roller support (31).

6. The corn planter with seed screening function according to claim 5, characterized in that: A spring support rod (32) is provided between the pressure roller support (31) and the pressure roller bracket (30). The spring support rod (32) is connected to the pressure roller (29) through a rotating shaft. A guide hole is provided on the pressure roller support (31). The spring support rod (32) passes through the guide hole and is movably connected to the pressure roller support (31). A spring four (33) is sleeved on the spring support rod (32).

7. The corn planter with seed screening function according to claim 1, characterized in that: A collection box (34) is provided at the bottom of the screening chamber (10), and an opening is provided on the screening chamber (10) to cooperate with the collection box (34).

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