A precision seeding device and method for pneumatic seed collection and cleaning

Abstract

The present invention discloses a precision seeding device and method for pneumatic seed removal and seed cleaning. The precision seeding device mainly consists of: a combined seed removal disk, a hollow shaft, an air-breaking ring, a movable disk, and a seed feed cover. Its characteristics are: the seed removal disk and the movable disk are installed to form a negative pressure chamber, the air-breaking ring is installed in the negative pressure chamber, the center of the air-breaking column on the air-breaking ring corresponds to the center of the seed hole of the seed removal disk, the seed feed cover is buckled on the combined seed removal disk to form a closed seed chamber, and the hollow shaft passes through the seed feed cover, the combined seed removal disk, the air-breaking ring, and the movable disk in sequence. The present invention aims to solve the problems in the prior art of over-clearing or missed clearing of the seed metering device leading to a decrease in seeding performance and the problem of seeds being easily damaged or stuck during the mechanical forced seed cleaning process. The effects are: adapting to the seed cleaning effect of various crops, improving the seeding performance of the seed metering device, effectively adjusting the stable adsorption posture of the seeds, and avoiding the occurrence of seed damage and seed jamming.

Description

Technical Field

[0001] The present invention relates to the technical field of agricultural sowing machinery, and in particular to a precision seeding device and method for pneumatic seed extraction and seed cleaning. Background Art

[0002] Mechanized precision seeding technology reduces seed usage, improves seeding quality, and achieves precise seeding depth, row spacing, and plant spacing. Existing mechanized seeding technology often involves mechanically forced seed clearing, which can lead to seed damage and seed jamming. Over-clearing or missed clearing by the seed meter can also reduce the meter's performance. Summary of the Invention

[0003] The purpose of the present invention is to provide a precision seeding device and method for pneumatic seed extraction and seed cleaning, which can improve seeding performance, effectively adjust the stable adsorption posture of seeds, and avoid seed damage and seed jamming.

[0004] The purpose of the present invention is achieved through the following scheme: a precision seeding device for pneumatic seed removal and seed cleaning, mainly composed of a seed feed cover, a combined seed removal plate, a connecting flange, a hollow shaft, an air cut-off ring, a movable plate, etc.

[0005] In the present invention, the combined seed taking disc, connecting flange and movable disc are installed to form a negative pressure cavity, the air cut-off ring is installed in the negative pressure cavity, and the hollow shaft passes through the seed inlet cover, the combined seed taking disc, connecting flange, air cut-off ring and movable disc in sequence.

[0006] According to the division of the seeding working area, the air-breaking ring is provided with several air-breaking columns with different densities in the seed-taking area and the seed-cleaning area. An air-breaking block is provided in the seed-throwing area, and the centers of the several air-breaking columns correspond to the centers of the seed holes of the combined seed-taking disk.

[0007] The seed inlet cover is buckled on the combined seed taking plate to form a closed seed chamber.

[0008] The beneficial effects of the present invention are as follows: the seed particles can adjust their movement posture and accelerate their movement toward the fixed seed hole under the action of the limited migration space constraint force and the intermittently changing adsorption force 1 provided by the first area of ​​the air-breaking column; after the fixed seed hole leaves the seed population, the unstable seed particles fall under the action of the intermittently changing adsorption force 2 provided by the second area of ​​the air-breaking column, and the remaining seed particles continuously adjust their adsorption posture to tend to a more stable adsorption posture; in the air-breaking block area, the seed particles lose the adsorption force and are thrown away under the action of centrifugal force and gravity.

[0009] On the basis of the above technical solution, the present invention can also be improved as follows.

[0010] Furthermore, the density and height of the several air-breaking columns arranged along the air-breaking ring can be adjusted to match the corresponding relationship according to seeds of different particle sizes.

[0011] The beneficial effect of adopting the above further scheme is that the precision seeding device can adapt to seeds of different sizes: for seeds with smaller particle sizes, higher and sparser air-breaking columns are set; for seeds with larger particle sizes, shorter and denser air-breaking columns are set; this can be achieved directly by replacing the air-breaking ring, which is easy to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is an exploded axonometric view of the precision seed metering device of the present invention.

[0013] Figure 2 It is a cross-sectional view of the precision seed metering device of the present invention.

[0014] Figure 3 This is an axonometric view of the air-breaking ring of the precision seed metering device of the present invention.

[0015] Figure 4 This is a stepped sectional front view of a precision seed drill according to an embodiment of the present invention.

[0016] The list of parts represented by each number in the accompanying drawings is as follows: 1. Seed inlet cover, 2. Combined seed removal plate, 3. Connecting flange, 4. Flange bearing, 5. Hollow shaft, 6. Air cut-off ring, 7. Moving plate, 8. Moving plate bearing, 9. Air cut-off block, 10. Air cut-off column, 10-1. Air cut-off column area 1, 10-2. Air cut-off column area 2, 11. Seed chamber, 12. Negative pressure chamber, 13. Seed inlet, 14. Seed hole, 15. Limited migration space, 16. Air suction port, 17. Strip vent, 18. Seeder, 19. Seed guide belt, 20. Duckbill hole former assembly, 21. Pressure plate. DETAILED DESCRIPTION

[0017] The principles and features of the present invention are described below with reference to the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0018] Specific embodiment 1.

[0019] As attached Figure 1 、 2As shown in Figures 3 and 4, the pneumatic seed removal and seed cleaning and precision seed metering device includes a seed feed cover 1, a combined seed removal disc 2, a connecting flange 3, a hollow shaft 5, an air cut-off ring 6, and a movable disc 7. Specifically, the seed feed cover 1 is provided with a seed feed port 13, the combined seed removal disc 2 is provided with a limited movement space 15 and a seeding hole 14, the hollow shaft 5 is provided with an air intake port 16 and strip-shaped air vents 17 distributed along the circumference, the air cut-off ring 6 is provided with an air cut-off block 9 and a plurality of air cut-off columns 10 with different densities in two regions, the centers of the plurality of air cut-off columns 10 corresponding to the centers of the seeding holes 14; the combined seed removal disc 2, the connecting flange 3, and the movable disc 7 are installed to form a negative pressure chamber 12, the air cut-off ring 6 is installed in the negative pressure chamber 12, the seed feed cover 1 is buckled onto the combined seed removal disc 2 to form a closed seed chamber 11, and the hollow shaft 5 passes through the seed feed cover 1, the combined seed removal disc 2, the connecting flange 3, the air cut-off ring 6, and the movable disc 7 in sequence.

[0020] The device has a reasonable and compact structure. The seed taking, seed cleaning, seed carrying and seeding processes are realized by combining the seed taking plate 2, the negative pressure chamber 12 and the air cut-off ring 6. The seed taking is accurate and the device has a long service life, high reliability and does not damage the seeds. When sowing seeds of different particle sizes, it can be directly achieved by replacing the air cut-off ring 6, which is easy to operate, thereby improving the versatility of the seeding device for seeds of different particle sizes.

[0021] The above-mentioned pneumatic seed collection and seed cleaning and precision seed metering device can be further optimized and / or improved according to actual needs.

[0022] As attached Figure 1 、 2 As shown in Figure 3, the number, height and arrangement area of ​​the air-breaking columns 10 arranged along the air-breaking ring 6 can be adjusted according to the actual needs of seeding: when it is necessary to reduce the angle of the seed-clearing area and increase the angle of the seed-throwing area so that the seeds are thrown away from the fixed seed holes 14 in advance under the action of centrifugal force and gravity, the number of air-breaking columns 10 in the two areas can be reduced and the area of ​​the air-breaking blocks 9 can be increased, so that the seeds can fall from the seeding device into the seed guide tube as soon as possible, and thus fall into the soil seed bed faster.

[0023] Specific embodiment 2.

[0024] As attached Figure 4As shown, a precision seeding device for air vibration seeding and seed cleaning comprises a precision seeding device for air vibration seeding and seed cleaning as described in Example 1, a plurality of seed separators 18, a seed guide belt 19, a plurality of duckbill seeding device assemblies 20 corresponding to the number of seed separators 18, and a vertically arranged pressure plate 21. The plurality of duckbill seeding device assemblies 15 are arranged along the end surface of the movable plate 7 and fit tightly together. The seeding positions of the duckbill seeding device 15 and the seed guide belt 19 correspond one-to-one. The seeding holes 14 of the precision seeding device for air vibration seeding and seed cleaning correspond one-to-one to the duckbill seeding device assemblies 20 and the seed separators 18. The pressure plate 21 is connected to the movable plate 7 to define the relative positions of the plurality of duckbill seeding device assemblies 15. One end of the hollow shaft 5 extends from the seed inlet cover 1 to introduce negative pressure airflow, and the other end extends from the movable plate 7 to be fixed.

[0025] The specific sowing implementation process of the precision hole seeder with air vibration seeding and seed cleaning includes the following steps.

[0026] S1: Negative pressure air is provided by the air intake 16 connected to the air pipe, which communicates with the negative pressure chamber 12 through the strip vent 17 of the hollow shaft 5. A number of seeds are fed into the seed chamber 11 from the seed inlet 13. The seeds are concentrated at the bottom of the seed chamber 11 under the action of gravity. The combined seed removal disk 2 rotates to disturb the seed population. Under the restraining force of the limited migration space 15 and the intermittently changing adsorption force provided by the broken air column area 10-1, the seeds continuously adjust their movement posture and move toward the fixed seed hole 14. One or two seeds enter the fixed seed hole 14.

[0027] S2: After the seed holes 14 filled with one or two seeds leave the seed group, the unstable seeds fall off under the action of the intermittently changing adsorption force provided by the second area of ​​the air-breaking column 10-2, and the remaining seeds continuously adjust their adsorption posture to a more stable adsorption posture and migrate backward along with the combined seed tray 2;

[0028] S3: In the air-off block area, the stably adsorbed seeds in the seeding holes 14 lose their adsorption force and are thrown out of the precision seeding device under the action of centrifugal force and gravity, and enter the cavity of the duckbill hole forming device assembly 20 through the seed distributor 18 and the seed guide belt 19;

[0029] S4: As the precision seed drill for pneumatic seeding and seed cleaning rotates and contacts the soil, the duckbill seed drill assembly 20 opens, and the seeds smoothly fall into the seed bed opened by the duckbill seed drill assembly 20, completing the seed drill process.

[0030] In the present invention, the term "several" refers to two or more, unless otherwise specified. Terms such as "installed," "connected," and "fixed" should be interpreted broadly. For example, "connected" can mean a fixed connection, a detachable connection, or an integral connection. Those skilled in the art will understand the specific meanings of these terms in the present invention based on specific circumstances.

[0031] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or unit referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the present invention.

[0032] Throughout this specification, references to "a specific embodiment" mean that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. Throughout this specification, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0033] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A precision seeding device for pneumatic seed removal and seed cleaning, comprising a seed feed cover (1), a combined seed removal disc (2), a connecting flange (3), a hollow shaft (5), an air cut-off ring (6), and a movable disc (7), wherein: The seeding cover (1) is provided with a seeding port (13), the combined seeding disc (2) is provided with a limited movement space (15) and a seeding hole (14), the hollow shaft (5) is provided with an air inlet (16) and strip-shaped air vents (17) distributed along the circumference, and the air-breaking ring (6) is provided with an air-breaking block (9); the characteristic is that: the combined seeding disc (2), the connecting flange (3) and the moving disc (7) are installed to form a negative pressure chamber (12), the air-breaking ring (6) is installed in the negative pressure chamber (12), and the air-breaking ring (6) is provided with a pressure regulating device according to the seeding direction. A plurality of air-breaking columns (10) with different densities are distributed in two different working areas, specifically an air-breaking column area 1 (10-1) and an air-breaking column area 2 (10-2). The centers of the plurality of air-breaking columns (10) correspond to the centers of the seed holes (14) on the combined seed-taking disk. The seed-entry cover (1) is buckled on the combined seed-taking disk (2) to form a closed seed chamber (11). The hollow shaft (5) passes through the seed-entry cover (1), the combined seed-taking disk (2), the connecting flange (3), the air-breaking ring (6), and the movable disk (7) in sequence. The seeding method using the pneumatic seeding and seed cleaning precision seeding device includes the following steps: S1: A negative pressure airflow is provided by connecting the air inlet (16) to the air pipe, and the strip-shaped air vent (17) of the hollow shaft (5) is connected to the negative pressure chamber (12). A number of seeds are fed into the seed chamber (11) from the seed inlet (13). The seeds are concentrated at the bottom of the seed chamber (11) under the action of gravity. The combined seed-taking disk (2) rotates and disturbs the seed population. The seeds continuously adjust their movement posture and move toward the fixed seed hole (14) under the action of the restraining force of the limited migration space (15) and the intermittently changing adsorption force provided by the broken air column area (10-1). One or two seeds enter the fixed seed hole (14); S2: After the seed holes (14) filled with one or two seeds leave the seed group, the unstable seeds fall under the action of the intermittently changing adsorption force provided by the second area of ​​the air-breaking column (10-2), and the remaining seeds continuously adjust their adsorption posture to a more stable adsorption posture and migrate backward along the combined seed-taking disk (2); S3: In the air-off block area, the stably adsorbed seed particles in the fixed seed hole (14) lose their adsorption force and are thrown away under the action of centrifugal force and gravity, completing the working process.

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