Groove-tooth combined type seed metering disc for high-speed seed metering of spherical small-sized seeds

Abstract

The invention discloses a groove-tooth combined type seed metering disc for high-speed seed metering of spherical small-sized seeds. According to the seed metering disc, the center of a seed meteringdisc body is provided with a positioning hole, the seed metering disc body is provided with a plurality of limiting grooves which are distributed at intervals and are concentrically arranged with thepositioning hole, a seed stirring tooth is formed between any two adjacent limiting grooves, first adsorption channels are formed in the limiting grooves, and second adsorption channels are formed inthe seed stirring teeth. The seed metering disc has the advantages that a groove-tooth combined structure is adopted, directional stirring is carried out on a seed group, the stable accumulation stateof the seed group is broken, so that a small-sized amount of seeds can be quickly separated from the seed group and enter a fixed annular groove channel to be freely captured and accurately adsorbedby the adsorption channels, so that the seed metering efficiency is improved, high-speed seed metering is realized, meanwhile, the friction force between the groove-tooth combined type seed metering disc and the seed group is small, the stirring quantity is large, the scraping force of a baffle in a seed metering device is small, and the damage of seed coat cannot be easily caused.

Description

technical field [0001] The invention relates to the technical field of agricultural precision seeding machinery and equipment, in particular to a slotted tooth combined seeding disc for high-speed seeding of small spherical seeds. Background technique [0002] Spherical small particle size seeds refer to seeds with a sphericity of not less than 80% and an average particle size of not more than 3mm, which mainly include rapeseed, millet, alfalfa, flowers and some vegetable seeds, etc. Although they have high sphericity and good fluidity, However, due to the small particle size, weak shear resistance and large difference in sowing rate, it is difficult to achieve universal precision sowing in the field. Universal precision seeding technology has the advantages of saving time, labor, and seeds. Developing an economical, practical, light, energy-saving, universal and reliable spherical small-size precision seed metering device is an important way to save costs and increase effic...

AI Technical Summary

Problems solved by technology

However, there are still the following problems: first, the disturbance intensity of the chute to the population is not large, and the seeds are difficult to be separated from the population and absorbed by the holes; second, the directional disturbance of the chute to the population is not obvious, and it is difficult to break the population Stable stacking state, which is not conducive to the separation of seeds from the population

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