A drum type pneumatic seed metering device

Abstract

The invention discloses a drum type pneumatic seed metering device, which comprises a machine case, a seed metering drum, a seed net, a seed outlet channel and a motor. There are seed chamber, air chamber and air inlet in the chassis; the seed roller is installed in the air chamber, and its rotation is driven by a motor; the seed net is placed between the seed outlet and the seed roller; the seed outlet channel is used to accept the seed The seed suction holes on the drum capture the seeds and lead them out of the case; there are air distribution channels in the case. In the present invention, the airflow distribution channel is arranged in the cabinet, so that the airflow enters the air chamber in two ways, so that a pressure difference appears between the inner and outer sides of the seed-discharging drum, so that the seed suction hole can absorb and transfer the seeds, wherein the airflow entering the air chamber through the seed net When entering the air chamber, the seeds on the seeding net can be in a "boiling" state, which greatly reduces the movement resistance of the seeds, and can change the attitude of the seeds, greatly improving the success rate of adsorption of the seed suction holes on the seeding drum, ensuring that the shape is not Seed quality of regular seeds.

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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