PNEUMATIC SEED-PLANTING DEVICE Russian patent published in 2009 - IPC A01C7/00 

FIELD: agriculture.

SUBSTANCE: invention refers to seed planting of cereal crops; it can be also implemented for supply of granulated components into mixers. The seed-planting device consists of a seed distributing chamber, of a seed spout and of a motor of an axial ventilator of the chamber. The seed distributing chamber has a replaceable perforated partition assembled at the distance of 1/3-1/4 of height from the lower end of the chamber. The ventilator and a vortex are installed in the lower part of the chamber. Both the ventilator and the vortex are made in form of spirals. A conic guide and apertures for seed outlet into the seed spout are located in the upper part of the chamber. The diameter of apertures in the partition is equal to 0.3...0.6 of the average diameter of planted seeds. A perforation step in any direction is 5...8 of a medium diameter of seeds.

EFFECT: increased uniformity of seed supply to boot, elimination of non-uniform seed planting, simplification of design, reduced metal consumption of seed planting device and expansion of its function features.

2 cl, 2 dwg