SEEDING ELEMENT FOR PNEUMATIC SEED DRILLS OF PRECISION SOWING Russian patent published in 2020 - IPC A01C7/04 A01C7/20 

FIELD: agriculture.

SUBSTANCE: sowing element for pneumatic seed drills of precise seeding and a pneumatic seeder containing a plurality of such sowing elements leveled in the alignment direction, substantially transverse to the sowing continuation direction, and which comprises a seed separation device comprising a sowing disk. Sowing disk separates two chambers inside the separating device, which are intended for maintenance of seeds subject to separation, and for pressure injection in the separating device accordingly. Between chambers by means of pneumatic device there created is pressure difference, which is created and maintained through row of holes, passing between opposite surfaces of seeding disc to cause there adhesion of seeds to each hole and to transport seeds, which are separated so, in direction of seed transfer pipe for movement of seeds, with initial part, which is located next to device for separation of seeds, middle part, which extends, continuing the initial portion, and the end portion having a bend for seed dispensing. Seed conduit at least in initial part and in middle part is rectilinear and coaxial and additionally comprises pneumatic accelerator, which is located along seed drill for movement of seeds. Pneumatic booster is located between middle part and end part of seed conduit for movement of seeds. Relation between the total length of the initial part and the middle part and the length of the final part of the seed conduit is greater than or equal to 2:1.

EFFECT: ensuring constancy of interval between seeds at high seeding rates.

16 cl, 8 dwg