Airflow type seed-metering device

Abstract

The invention provides an airflow type seed-metering device. Seeds are absorbed through negative pressure and airflow blows the seeds to be subjected to seed metering; a seed flow is formed by the seeds in a seed-metering pipe under the action of the airflow, so that collision between the seeds and the seed-metering pipe is reduced; the seeds are stably sowed into seed ditches under the action of a separator, so that the seed sowing precision is increased and the seed sowing quality is improved. The airflow type seed-metering device is mainly composed of an airflow seed-metering device, a compensation draught fan, the separator and the seed-metering pipe; the seed-metering pipe is connected with an outlet the airflow seed-metering device and an inlet of the separator respectively; the draught fan is connected with the outlet of the separator and the inlet of the airflow seed-metering device respectively. The airflow seed-metering device is composed of a shell, a seed disc and an airflow distributor; the airflow generates negative pressure under the action of a forward fan blade in the airflow distributor and is used for filling the seeds; the airflow blows the seeds out of greapel holes under the action of a backward fan blade, so as to carry out seed metering; the airflow and the seeds form the seed flow to enter the seed-metering pipe together; after the seed flow enters the separator, the seeds and the airflow are separated. The device is simple in structure and high in seed filling and metering efficiency; the seed sowing is more accurate and the seed sowing quality is improved.

Description

technical field [0001] The invention relates to the technical field of agricultural planting machinery, in particular to an air flow type seed meter. Background technique [0002] At present, precision seeding technology is developing rapidly, and relevant scholars have realized the precise seeding operation of the seed metering device by improving the performance of the seed metering device. However, during the process of the seeds being discharged through the seeding tube, it is easy to form accumulations and large gaps under the action of collision, friction, etc., resulting in inaccurate seeding and affecting the quality of seeding. The invention proposes an air-flow type seed metering device, which sucks seeds through negative pressure and blows seeds with air flow for seeding. Under the action of the separator, the seeds are stably sown into the seed furrow, which increases the sowing precision and improves the sowing quality. SUMMARY OF THE INVENTION [0003] The ...

AI Technical Summary

Problems solved by technology

However, when the seeds are discharged and pass through the seeding pipe, they are easy to form accumulations and large gaps under the action of collision and friction, resulting in inaccurate seeding and affecting the quality of seeding.

Images