PULSE AIR OPERATED SEEDER UNIT Russian patent published in 2014 - IPC A01C7/04 

FIELD: machine building.

SUBSTANCE: seeder unit comprises housing, overpressure nozzle, intake device and seeder disc with working edge that feature factor of friction against seed over 0.7. Said seeder disc is fitted on drive shaft in the housing circular groove and shaped to truncated circular right cove with smaller base facing the housing. Housing circular groove is composed, also, of conical surface with its larger base facing the seeder disc. Angles of inclination of seeder disc generating lines and housing circular grooves to seeder disc base plane are equal. Housing features profile of truncated circle. Housing cylindrical part top zone of transition to flat part on the side abutting on seeder disc has bore for air pulses generator nozzle. This bore features diameter smaller than half the seed minimum size. Besides, seed duct pipe is secured at the housing flat surface perpendicular to seeder disc plane at the distance of at least two maximum seed sizes from air pulse generator nozzle. Pipe cross-section features the shape of rectangle with sides not smaller than seed maximum size.

EFFECT: higher quality of seeding.

2 dwg