PNEUMATIC FEED Russian patent published in 2004 - IPC

FIELD: agricultural engineering; seeding mechanisms.

SUBSTANCE: proposed pneumatic feed has vacuum chamber and seed box. Seeding disk with cover plate provided with suction holes is placed between vacuum chamber and seed box. Projections in form of triangular pyramid are made at each hole. One face of pyramid lies in plane of cover plate surface. Other face with suction hole is working one and is pointed in direction of disk rotation. Angle of face tilting to plane of disk is at least 10% less than angle of seed friction against material of which projection is made. Working face rib being base of face is directed radially to center of disk rotation. Axis of suction hole in cover plate and in projection is square to plane of working face of projection.

EFFECT: improved quality of one-by-one delivery of seeds.

2 dwg