PNEUMATIC SEEDING UNIT Russian patent published in 2005 - IPC

FIELD: agricultural engineering.

SUBSTANCE: seeding unit has seed hopper and aeration chamber arranged in its lower part and provided with dosing window. Aeration chamber is defined by wall, bottom and ceiling and is communicating with excessive pressure source through slit opening of air collector disposed underneath bottom of aeration chamber. Aeration chamber surface is made concave and is formed as portion of Archimedes' spiral conjugated with ceiling surface. Collector is fixed for displacement and altering of inclination angle relative to slit opening.

EFFECT: increased uniformity of feeding seeds into seed guide, uniform distribution of seeds in row during embedding of seeds in soil and, as a consequence, increased yield of sown crops, and also reduced dimensions of seeding unit.

2 dwg