PNEUMATIC SEEDING UNIT Russian patent published in 1999 - IPC

FIELD: agriculture, in particular, precise seeding equipment. SUBSTANCE: pneumatic seeding unit has housing with seed box and cover with vacuumizer, seeding disks with cells arranged in cylindrical part, excessive seed ejector and seed ejecting plate, cylinder mounted on shaft between seeding disks. Diameter of cylinder is equal to diameters of seeding disks and width is equal to seed line spacing. Layers between seeding disks and cylinder define vacuumizing slits. Excessive seed ejector is mounted on shaft between cover and housing at seed discharge end of seed box, is made plated and is biased to seeding disks and cylinder. Seed ejecting plates are positioned at both sides of cylinder in vacuumizing slits so as to cut off vacuum channel. Shaft is mounted with its second end in cover within bearing. Such construction allows small seeds to be sown in different seeding patterns. EFFECT: increased efficiency and enhanced reliability in operation. 4 cl, 6 dwg