SOWING DEVICE FOR GRAIN CROPS Russian patent published in 2015 - IPC A01C7/04 

FIELD: agriculture.

SUBSTANCE: sowing device for grain crops comprises a hopper mounted on the bottom of the intake chamber, a drum-guide of seeds with a mechanical drive, a plate reflector of superfluous seeds, and a channel of increased pressure for forced ejection of seeds to the drill tube with the overpressure air. The overpressure channel is formed in the drum. The surface of the drum-guide is made of silicone and it is mounted in the stationary housing with an ability of rotation and periodic communication of the overpressure channel with the gap of conjugation of stationary housing and the drill tube of silicone when the seeds achieve the said gap through the channel of seed distribution. The latter is connected to the drum-guide. The size of the coupling gap is 1.00÷1.20 mm, and the pressure in the system is 0.21÷0.23 MPa.

EFFECT: invention enables to improve the distribution of seeds in the soil while simultaneous reduction of their damage.

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