PNEUMATIC SEEDING UNIT Russian patent published in 2003 - IPC

FIELD: agricultural engineering. SUBSTANCE: seeding unit has casing with seed chamber, cover with vacuumizer, seeding disk mounted between casing and cover on horizontal shaft and composed of base with sucking through openings and faceplate with suction openings, which are made in the form of equilateral triangle with apex oriented toward seeding disk center. Basic sizes of suction openings depend on seed fraction of crop to be sown. Seeding unit may be used in precise drills. EFFECT: improved quality of precise sowing and reduced consumption of seeds due to elimination of double sowing. 3 dwg