Chain spoon tail-raising self-cleaning type precise pinellia ternate seed sowing device

Abstract

The invention discloses a chain spoon warped tail self-cleaning type pinellia ternate precision seed-metering device which comprises a seed-metering device shell, seed spoons, a backflow plate, a chain, a chain wheel assembly and the like. The seed spoons are fixed on the linking attachment plate, a large seed filling cavity is formed by a seed taking opening and a warped tail structure, and the design of a trapezoidal structure with a narrow upper part and a wide lower part, a drop-shaped hole and a U-shaped slope surface is adopted, so that the seed filling efficiency is improved, and rapid self seed cleaning is realized. And the L-shaped chain link attachment plate of the chain and the cambered surface structure of the seed spoon cooperate to prevent the seeds from being blocked. And the backflow plate guides redundant seeds to flow back to the seed box at an inclination angle of 27 degrees. The tensioning device is used for adjusting the tensioning force of the chain and the dip angle of the seed spoon through a tensioning spring and a tensioning spring. By optimizing the matching relation between the seed spoon structure and movement, the precision and reliability of seed metering of pinellia ternate seeds are remarkably improved.

Description

Technical Field

[0001] This invention relates to the field of agricultural machinery, and in particular to a chain-spoon self-cleaning precision seed metering device for Pinellia ternata. Background Technology

[0002] Pinellia ternata, an important traditional Chinese medicinal herb and a distinctive medicinal economic crop, has seen its planting area increase year by year, with strong market demand. While the amount of seeds used for Pinellia ternata is large, sowing is primarily done manually or semi-manually, resulting in low mechanization levels, high labor intensity, and low overall yield, making it difficult to meet market demand in a timely manner. As the primary step in Pinellia ternata production, achieving mechanized sowing and continuously improving sowing precision is essential for high yields. Therefore, developing a precision seed metering device specifically designed for Pinellia ternata sowing can effectively solve the problems of high labor costs and low production efficiency in Pinellia ternata cultivation, and is of significant importance in promoting the mechanization of Pinellia ternata cultivation. Summary of the Invention

[0003] To achieve the above objectives, the present invention provides a chain-spoon self-cleaning Pinellia precision seed metering device.

[0004] The technical solution adopted in this invention is: a chain-spoon self-cleaning Pinellia precision seed metering device, comprising a seed metering device housing, a limiting square tube, a seed guard plate, a driven sprocket, a return plate, a seed spoon, a driving sprocket, a seed box, a tensioning device, a tensioning sprocket, and a chain, etc. The limiting square tube, the seed guard plate, the driven sprocket, the driving sprocket, and the tensioning sprocket are fixed to the seed metering device housing by bolts.

[0005] Furthermore, the chain is an indirect contact component for the seeds, and its chain link plate adopts an L-shaped structure to prevent the seeds from getting stuck between the chain link plate and the seed scoop during seed cleaning.

[0006] Furthermore, the return plate is installed on both sides of the chain at the top of the seed metering device housing. The return plate has an angle of 27° with the horizontal plane, and one end of it is connected to the seed box to guide excess seeds back to the seed box.

[0007] Furthermore, the seed spoon is mounted on the chain link plate, with multiple seed spoons closely arranged along the chain. Adjacent seed spoons form a large filling cavity through the seed-taking opening and the raised tail structure, improving filling efficiency. As the seed spoon moves with the chain, it performs a seed-cleaning function through rotation and self-flipping. The seed spoon adopts a trapezoidal structure that is narrower at the top and wider at the bottom, with a teardrop-shaped hole. Its back is a U-shaped sloping surface. This design expands the filling cavity to guide seeds into the seed-taking opening and accelerates the discharge of excess seeds during cleaning. The back and sides of the seed spoon have arc surfaces with a specific curvature to prevent seed jamming during chain movement.

[0008] Furthermore, the tensioning device comprises a tensioning sprocket, a tensioning spring, a tensioning slider, a tensioning track, a connecting device, and adjusting bolts. The tensioning device is symmetrically arranged on both sides of the seed metering device housing. The tensioning device controls the compression of the tensioning spring by changing the position of the adjusting bolts, thereby adjusting the chain tension. The tensioning slider can slide to adjust the position of the tensioning sprocket, thereby adjusting the seed filling angle of the seed scoop.

[0009] The beneficial effects of this invention are as follows: This seed metering device can effectively ensure single-seed retrieval by the seed spoon during the seed filling and cleaning process without damaging the seeds, thus reducing the reseeding rate and missed seeding rate. Furthermore, the seed metering device has a simple machine structure and a reliable working mechanism. The successful application of this designed seed metering device can fill the current market gap for Pinellia ternata seed metering devices, effectively promote the mechanization of Pinellia ternata cultivation, and provide technical reference for the design of seed metering devices for other bulbous medicinal herbs. Attached Figure Description

[0010] Figure 1 The overall structural diagram of a chain-spoon self-cleaning Pinellia precision seed metering device provided by the present invention.

[0011] Figure 2 This invention provides a schematic diagram showing the connection between the chain and the seed spoon in a chain-spoon self-cleaning Pinellia precision seed metering device.

[0012] Figure 3 The diagram shows the structure of the seed spoon in a chain-spoon self-cleaning Pinellia precision seed metering device provided by this invention.

[0013] Figure 4 This is a schematic diagram of the tensioning device structure of a chain-spoon self-cleaning Pinellia precision seed metering device provided by the present invention.

[0014] Figure 5 This is a schematic diagram illustrating the working principle of a chain-spoon tail-lifting self-cleaning Pinellia precision seed metering device provided by the present invention.

[0015] In the diagram: 1. Seed metering device housing; 2. Limiting square tube; 3. Seed protection plate; 4. Driven sprocket; 5. Return plate; 6. Seed scoop; 7. Drive sprocket; 8. Seed box; 9. Tensioning device; 10. Tensioning sprocket; 11. Chain; 12. Chain link plate; 13. Tensioning spring; 14. Tensioning slider; 15. Tensioning track; 16. Connecting device; 17. Adjusting bolt. Detailed Implementation

[0016] The technical solution of the present invention will be described in detail below with reference to the accompanying drawings, so as to further understand the purpose, working principle and function of the present invention.

[0017] like Figure 1As shown, a chain-spoon self-cleaning Pinellia precision seed metering device includes a seed metering device housing (1), a limiting square tube (2), a seed protection plate (3), a driven sprocket (4), a return plate (5), a seed spoon (6), a driving sprocket (7), a seed box (8), a tensioning device (9), a tensioning sprocket (10), and a chain (11). The limiting square tube (2), the seed protection plate (3), the driven sprocket (4), the driving sprocket (7), and the tensioning sprocket (10) are fixed to the seed metering device housing (1) by bolts. The return plate (5) has an angle of 27° with the horizontal plane. The return plate (5) is installed on both sides of the chain (11) at the top of the seed metering device housing (1). One end of the return plate (5) is connected to the seed box (8), and excess seeds can flow back to the seed box (8).

[0018] like Figure 2 and Figure 3 As shown, the chain (11) is the indirect contact component for seeds. Its chain link plate (12) adopts an L-shaped structure to prevent seeds from getting stuck between the chain link plate (12) and the seed spoon (6) during seed cleaning. The seed spoon (6) is assembled on the chain link plate (12). Multiple seed spoons (6) are closely arranged along the chain (11). The adjacent seed spoons (6) form a large filling cavity through the seed extraction port and the upturned tail structure to improve the filling efficiency. When the seed spoon (6) moves with the chain (11), it achieves the seed cleaning function through rotation and the flipping of the seed spoon (6). The seed spoon (6) adopts a trapezoidal structure with a narrow top and wide bottom and a teardrop-shaped hole. Its back is a U-shaped sloping surface. This design expands the filling cavity to guide the seeds into the seed extraction port and accelerates the discharge of excess seeds during seed cleaning. The back and sides of the seed spoon (6) are provided with arc surfaces with a specific curvature to prevent seed jamming during the movement of the chain (11).

[0019] like Figure 4 As shown, the tensioning device (9) consists of a tensioning sprocket (10), a tensioning spring (13), a tensioning slider (14), a tensioning track (15), a connecting device (16), and an adjusting bolt (17). The tensioning device (9) is symmetrically arranged on both sides of the seed metering device housing (1). The tensioning device (9) controls the compression of the tensioning spring (13) by changing the position of the adjusting bolt (17), thereby adjusting the tension of the chain (11). The tensioning slider (14) can slide to adjust the position of the tensioning sprocket (10), thereby adjusting the seed filling angle of the seed spoon (6).

[0020] In an alternative embodiment, such as Figure 5As shown, when the self-cleaning seed metering device with a raised tail of the chain spoon starts working, the active sprocket (7) drives the seed metering device chain (11) to move counterclockwise into the filling zone under the power drive. At this time, the seeds of Pinellia ternata in the lower layer of the population are filled into the seed scoop (6) seed-taking part under the combined action of gravity, the interaction force between seeds and between seeds and the inner wall of the seed box. The seed scoop (6) on the seed metering chain (11) scoops up Pinellia ternata seeds in turn. When passing through the seed cleaning zone, the target seeds in the seed retention part of the seed scoop are retained, and the excess seeds are cleaned up and fall into the return plate (5) and fall back into the seed box (8) by their own gravity. When entering the seed protection zone, the seed scoop (6) and the seed protection plate (3) form a closed space. Under the protection and guidance of the seed protection plate (3), the seeds move with the chain (11) to the seed placement area. When entering the seed placement area, the closed space opens, the seeds lose support and fall into the seed furrow, and the sowing process is completed.

[0021] This invention can complete the seeding process, including seed filling, seed cleaning, seed protection, and seed placement, in one go, which can effectively improve the efficiency and quality of precision seeding.

[0022] The above specific embodiments are merely descriptions of the basic principles and main features of the present invention, and are not intended to limit the scope of the present invention. Any equivalent changes or modifications made by those skilled in the art to the technical solutions of the present invention without departing from the spirit of the present invention should fall within the patent protection scope of the present invention.

Claims

1. A chain-spoon, self-cleaning, precision seed metering device for Pinellia ternata, characterized in that: The device includes a seed metering housing (1), a limiting square tube (2), a seed protection plate (3), a driven sprocket (4), a return plate (5), a seed scoop (6), a driving sprocket (7), a seed box (8), a tensioning device (9), a tensioning sprocket (10), and a chain (11). The limiting square tube (2), the seed protection plate (3), the driven sprocket (4), the driving sprocket (7), and the tensioning sprocket (10) are fixed to the seed metering housing (1) by bolts.

2. The chain-spoon self-cleaning Pinellia precision seed metering device according to claim 1, characterized in that: The chain (11) is the indirect contact component for the seeds. Its chain link plate (12) adopts an L-shaped structure to prevent the seeds from getting stuck between the chain link plate (12) and the seed spoon (6) during seed cleaning.

3. The chain-spoon self-cleaning Pinellia precision seed metering device according to claim 1, characterized in that: The return plate (5) is installed on both sides of the chain (11) at the top of the seed metering device housing (1). The angle between the return plate (5) and the horizontal plane is 27°. One end of the return plate is connected to the seed box (8) to guide excess seeds back to the seed box (8).

4. The chain-spoon self-cleaning Pinellia precision seed metering device according to claim 1, characterized in that: The seed scoop (6) is mounted on the chain link plate (12). Multiple seed scoops (6) are arranged closely along the chain (11). Adjacent seed scoops (6) form a large filling cavity through the seed extraction port and the upturned tail structure to improve the filling efficiency. When the seed scoop (6) moves with the chain (11), it achieves the seed cleaning function through rotation and the flipping of the seed scoop (6). The seed scoop (6) adopts a trapezoidal structure with a narrow top and wide bottom and a teardrop-shaped hole. Its back is a U-shaped slope. This design expands the filling cavity to guide the seeds into the seed extraction port and accelerates the discharge of excess seeds during seed cleaning. The back and sides of the seed scoop (6) are provided with arc surfaces with a specific curvature to avoid seed jamming during the movement of the chain (11).

5. The chain-spoon self-cleaning Pinellia precision seed metering device according to claim 1, characterized in that: The tensioning device (9) consists of a tensioning sprocket (10), a tensioning spring (13), a tensioning slider (14), a tensioning track (15), a connecting device (16), and an adjusting bolt (17). The tensioning device (9) is symmetrically arranged on both sides of the seed metering device housing (1). The tensioning device (9) controls the compression of the tensioning spring (13) by changing the position of the adjusting bolt (17), thereby adjusting the tension of the chain (11). The tensioning slider (14) can slide to adjust the position of the tensioning sprocket (10), thereby adjusting the seed filling angle of the seed spoon (6).

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