PNEUMATIC SEEDING UNIT Russian patent published in 2006 - IPC A01C7/04 

FIELD: agricultural engineering, in particular, precise drilling equipment.

SUBSTANCE: seeding unit has seed hopper with vacuum chamber and seed chamber. Disk with suction apertures and seed arch destructing device are located within seed chamber. Seed arch destructing device equipped with elbow is pivotally positioned within eccentric shaft bore and is provided with two arms, one of said arms being positioned on seed chamber bottom and other arm being positioned on chamber throat wall. Seeding unit is further equipped with stirrer whose thickness is equal to distance from seeding disk to proximal edge of shaft eccentric bore. Two conical projections are provided in diametrically opposite relation on end surface of stirrer, at portion corresponding to maximal radius. Hardness of surfaces of projections is equal to that of surface of seed arch destructing device. Angle of bases of cones is smaller than frictional angle of seed arch destructing device against surface of projections.

EFFECT: improved seeding quality of pneumatic seeding units owing to improved destruction of seed arch.

3 dwg