PNEUMATIC SEEDING UNIT Russian patent published in 2007 - IPC A01C7/04 

FIELD: agricultural engineering.

SUBSTANCE: seeding unit has seed hopper, casing with seed chamber and vacuum chamber, excessive seed flicker, drive shaft, seeding disk with suction openings, and stirrer with main and additional blades. Working faces of additional blades define, in conjunction with end face of stirrer disposed at the side adjacent to seed chamber, acute two-face angles oriented in direction of rotation of seeding disk. Rib of two-face angle between working face of each additional blade of stirrer is positioned tangentially to concentric circle of base of additional blades. Ribs of additional blades of stirrer facing flat part of stirrer base define therewith angle exceeding double angle of friction of seed against stirrer surface. Main and additional blades of stirrer are made of different length. Rollers are positioned at ends of main blades, at pins perpendicular to plane of seeding disk.

EFFECT: improved quality of single seed dispensing procedure and reduced consumption of power for seeding procedure.

3 dwg