PNEUMATIC MECHANICAL SEEDING UNIT Russian patent published in 2008 - IPC A01C7/04 

FIELD: agriculture; engines and pumps.

SUBSTANCE: seeding unit consists of working cylinder with inlet port, booster tubes with valve, piston, cam, frame with roller, working spring, seeds tank, seed cells, damper valve and feeder device. Frame is connected to the piston by rod. Feeder device is made in the form of a cane which is situated inside the seed cell and outside the cope. Cane is tightly connected to the rod and it has a keying action member for seeds. Latter is made in the form of spoons. The bottom of the spoon is downward at an angle α≥ϕ, where ϕ - is an angle of seeds friction over the material of the spoon. The keying action member has a guide plate with a longitudinal recess. Plate is tightly fixed under the inlet port in working cylinder.

EFFECT: improvement in selection accuracy of different seed sorts and in steady distribution of the seeds along the row by planting them into the ground.

2 dwg