DRILL TUBE OF AIR SEEDER Russian patent published in 2015 - IPC A01C7/04 A01C7/20 

FIELD: agriculture.

SUBSTANCE: drill tube of a air seeder comprises a pipeline and an airflow damper mounted vertically. The airflow damper is made in the form of a tube with windows. Above the tube a funnel with a clamp is fixed to prevent grain loss through the windows and controlling the amount of exhaust air.

EFFECT: invention enables to improve the quality of sowing by reducing the removal of seeds to the soil surface from under the opener hoe of the seeder due to reduction of the action of the air stream in the under-hoe space and uniformity of distribution of the seeds across the width of the furrow bottom by maintaining a sufficiently high speed of seed flight.

1 dwg