Precise seed-metering unit with air injection-seed cleaning combined geneva wheel

Abstract

The invention relates to a precise seed-metering unit with an air injection-seed cleaning combined geneva wheel in the field of agriculture seeding machinery. The precise seed-metering unit is provided with a precise seed-metering wheel which is arranged in a seed-metering unit housing and can rotate, a plurality of rows of small seed-metering holes are formed in one end of the precise seed-metering wheel, seed-metering slots are uniformly distributed in the periphery of the other end of the precise seed-metering wheel, an air injection pillar is arranged at the lower part of the seed-metering unit housing and is internally tangent with the segment of the small seed-metering holes of the precise seed-metering wheel, air vents are formed in the air injection pillar, the end of the air injection pillar is sealed, air injection holes are arranged downwards, and every one row of small seed-metering holes correspond to one air injection hole. Compared with the background art, the precise seed-metering unit has the advantages that seed pushing by a seeding pushing gear is changed to be high-pressure gas seed cleaning, the size and the number of the precise seed-metering holes are not affected by the seed pushing gear, processing can be carried out randomly, and even smaller seeds can be precisely sown.

Description

technical field [0001] The invention belongs to the technical field of agricultural machinery manufacturing, in particular to a seed meter in the accessories of sowing machinery. technical background [0002] There are various types of existing seed metering devices such as grooved wheel type, socket type, pneumatic type, finger clip type, etc., but some functions are single, and the seeding effect on small seeds is poor. Unloading seed metering device", 99202267.3 patent "multi-functional precision seeder metering device" and 200710017665.3 patent "central drive strong push type and half-mouth seeding precision seed metering device" can achieve accurate rowing of small, medium and large seeds However, there are still disadvantages such as complex structure and damaged seed metering device. Contents of the invention [0003] The purpose of the present invention is mainly for the 200710017665.3 patent "central drive forced push type and half-mouth precision seed metering d...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is mainly for the 200710017665.3 patent "central drive forced push type and half-mouth precision seed metering device" product, the center drive forced push type precision seed metering device and the seed pushing teeth meshed with the small hole of the seed metering wheel The strength and quality are difficult to guarantee, and the meshing of the pushing teeth and the seeding holes is easy to be misplaced, and the pushing teeth are damaged, which affects the service life of the product. A new cleaning method is adopted to avoid damage to the pushing teeth

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