UNIT FOR APPLICATION OF MINERAL FERTILISERS TO SOIL Russian patent published in 2014 - IPC A01C15/00 

FIELD: agriculture.

SUBSTANCE: unit comprises a hopper with a metering working element in the form of a screw mounted in it, having a right-hand and left-hand winding of turns and a casing of transport channel of fertilisers having sowing holes. In the hopper a conveyor for feeding fertilisers to the metering working element is mounted. On the outer edge of turns of the screw the brushes are fixed with a height of bristles 1.5÷2 times greater than the maximum particle size of mineral fertilisers. The brushes are connected with the casing of transport channel of fertiliser, which sowing holes are located on the bottom and sidewalls of the casing in chequered order. Dimensions of seeding holes are 1.5÷2 times larger than the particle sizes of mineral fertilisers. Under the metering working element on the hexagonal axis the loosening drum is mounted, consisting of discs with teeth curved in opposite sides from the plane of the disc. The drum is pivotally mounted to the hopper frame through the leashes and to ensure spring-loaded penetration. The casing of transport channel is connected to the loosening drum by the guide shield. At the rear side of the hopper there is a metering valve. The conveyor for feeding fertilisers and the metering working element are driven by a hydraulic motor through the change-speed gear.

EFFECT: increased reliability and uniformity of metering of fertilisers and ameliorants, and simultaneous incorporation of fertilisers in the soil is provided.

4 dwg