Drum-type pneumatic seed metering device

Abstract

The invention discloses a drum-type pneumatic seed metering device. The drum-type pneumatic seed metering device comprises a case, a seed metering roller, a seed net, a seed exit channel and a motor;a seed cabin, an air cabin and an air inlet are arranged in the case; the seed metering drum is rotationally installed in the air cabin, and is driven by the motor to rotate; the seed net is placed between the seed exit and the seed metering drum; the seed exit channel is used for receiving seeds obtained from seed suction holes in the drum and leading the seeds to the outside of the case; and theinterior of the case is equipped with an airflow distribution channel. According to the drum-type pneumatic seed metering device, by installing the airflow distribution channel in the case, airflow enters the air cabin in two ways to form pressure difference between the inner side and the outer side of the seed metering drum, so that the seed suction holes can suck and transfer the seeds; and when entering the air cabin, airflow entering the air cabin through the seed net makes the seeds on the seed net in a "boiling" state, so that the moving resistance of the seeds is greatly reduced, and postures of the seeds can be changed, thereby greatly improving the suction success rate of the seed suction holes in the seed metering drum, and guaranteeing seed metering quality of seeds with irregular shapes.

Description

technical field [0001] The invention relates to the technical field of agricultural machinery, in particular to a drum type pneumatic seed metering device. Background technique [0002] At present, agricultural machinery relies on the seeding device for seed supply and sowing. The seeding device can quantitatively and accurately separate the seeds from the seed pile to meet the needs of precise sowing of crops. The air-suction seed metering device is a commonly used seed metering device. It relies on the suction force of the seed-suction holes on the parts with multiple seed-suction holes to suck the seeds out of the seed pile and transport them to the seed outlet. For regular seeds (such as corn seeds), due to the large movement resistance of the seeds, the population state is unreasonable. Therefore, the leakage rate of the seed suction holes is very high, which affects the sowing quality of agricultural machinery. Contents of the invention [0003] Purpose of the inven...

AI Technical Summary

Problems solved by technology

The air-suction seed metering device is a more commonly used seed metering device, which relies on the suction force of the seed-suction holes on the parts with multiple seed-suction holes to suck the seeds out of the seed pile and transport them to the seed outlet, but for different shapes For regular seeds (such as corn seeds), due to the large movement resistance of the seeds, the population state is unreasonable, so the leakage rate of the seed suction holes is very high, which affects the sowing quality of agricultural machinery

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