Air suction type precise corn seed sowing device

By setting up a type hole and a seed snail on the seed discharge plate of the air-suction corn precision seeder, combined with the negative pressure chamber and seed cleaning structure, the problems of difficulty in filling seeds and high leakage rate during high-speed operations are solved, and a higher single-grain filling rate and seed quality are achieved.

CN119856622AActive Publication Date: 2025-04-22CHINA AGRI UNIV
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Patent Information

Application Number
CN202510283125.8
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-03-11
Publication Date
2025-04-22
Estimated Expiration
2045-03-11

AI Technical Summary

Technical Problem

When the existing air-suction corn precision seeder is operating at high speed, the seed plate speed is high, which leads to difficulty in filling seeds, increasing the seed rate, affecting the seed quality.

Method used

A gas-suction corn precision seeding device is designed. By evenly spaced a type hole and a seed snail on the seed tray, combining the negative pressure chamber and seed cleaning structure, the seed filling state and limit of corn seeds are adjusted to improve the single-grain seed filling rate and seed filling efficiency.

Benefits of technology

By setting up a combination of the type hole and the disturbed seed boss, the seed filling status can be effectively adjusted, the single-grain filling rate will be improved, the leakage sowing rate and replay rate will be reduced, and the seed quality will be improved.

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Abstract

The invention discloses an air suction type corn precision seed sowing device in the field of agricultural machinery equipment, which comprises a shell, a seed sowing unit is arranged in the shell, the seed sowing unit comprises a seed sowing disc, a plurality of holes are uniformly formed in the seed sowing disc at intervals along the circumferential direction, and the distance between the circle center of each hole and the seed sowing disc is a preset value; a seed filling area, a seed cleaning area, a seed carrying area and a seed throwing area corresponding to the surface position of the seed metering plate are respectively arranged in the shell, a seed cleaning structure is arranged in the shell and is correspondingly arranged at the position of the seed cleaning area, a seed inlet correspondingly communicated with the position of the seed filling area is formed in the shell, and a seed outlet is formed in the shell. The shell is provided with a seed falling opening communicated with the seed throwing area; a seed disturbing boss is arranged between every two adjacent mold holes, and the distance between every two adjacent seed disturbing bosses is a preset value and adapts to the maximum length of corn seeds; the single seed filling rate is greatly improved, the seed filling efficiency is improved, and the reseeding rate is reduced.
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