Rice seed metering device and rice cultivation apparatus

By introducing a pneumatic auxiliary mechanism and seed guide tube design into the rice direct seeding machine, the problems of missed sowing and seed damage during high-speed operation have been solved, achieving efficient and uniform seed discharge and protection, and improving sowing quality.

CN122397433APending Publication Date: 2026-07-17JIANGXI AGRICULTURAL UNIVERSITY
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
JIANGXI AGRICULTURAL UNIVERSITY
Filing Date
2026-06-12
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Existing rice direct seeders with mechanical seed metering devices are prone to problems such as missed seeding, poor seed mobility, and susceptibility to damage by birds and rodents when operating at high speeds.

Method used

A rice seed metering device was designed, which adopts a pneumatic auxiliary mechanism. A controllable wind pressure system is introduced to assist the seeds in falling and directional discharge. Combined with a seed protection mechanism and a seed guide tube, a suitable micro-groove structure is formed to cover the seeds.

Benefits of technology

It significantly improves seed discharge efficiency and uniformity, reduces the missed sowing index and clogging probability, maintains seed integrity, and improves germination rate and sowing quality.

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Abstract

本发明涉及农业播种机械技术领域，具体为一种水稻排种器及水稻栽培设备。排种器包括壳体，其设有入料腔、出料腔及落种管；型孔轮与壳体转动连接，周侧开有种腔承接稻种；种轮端盖固定于壳体一侧，柱塞部嵌入型孔轮阻挡稻种流出；清种机构将超出型孔轮表面的稻种清扫回入料腔；护种机构以橡胶带封闭种腔；气力辅助机构通过进气歧管与弧形槽相通形成第一驱动气路；导种管与落种管连接，形成第二驱动气路，加速稻种排出，末端出风口在泥面形成小微沟，稻种射入后泥浆覆盖，防鸟鼠虫害。本发明可提升种子排出效率，降低漏播和堵塞概率，减少种子损伤，提高出苗率，实现浅覆土，提升播种质量。
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