SEED DRILL TUBE OF PNEUMATIC PLANTER Russian patent published in 2013 - IPC A01C7/20 

FIELD: agriculture.

SUBSTANCE: seed drill tube comprises a pipeline connected with the source of compressed air, and an air flow damper. The air flow damper is made in the form of through holes made in the external walls of the curved pipeline sections. The width of each hole is less than half the minimum thickness of the sown seeds, and the length is equal to the length of the corresponding curved pipeline section.

EFFECT: invention enables to provide increasing the uniformity of distribution of seeds along the row in the open furrow.

2 dwg