SPREADER OF FERTILISERS Russian patent published in 2015 - IPC A01C17/00 

FIELD: agriculture.

SUBSTANCE: spreader comprises a hopper with an extension piece placed on the frame, a safety grid, and metering holes in the bottom, made with the ability of adjustment of the size using the valves, as well as a fertiliser diffuser, which drive is carried out by the tractor PTO, and a stirring device. The stirring device is mounted on a rotary axis of the rotary valve overlapping the metering holes. The stirring device is made in the form of a dome-destroyer. The dome-destroyer comprises a horizontal or inclined plank or a combination of horizontal and inclined planks arranged vertically one above the other. The dome-destroyer is mounted on a rotary axis of the valve at the lower part of the hopper, immediately above the metering holes. In the open position of the rotary valve, covering the metering holes, any face of the dome-destroyer, facing the direction of proposed movement of the rotary valve during its closing, is located in the same vertical plane as the face of the rotary valve facing the metering holes.

EFFECT: reduction of the extent of damage of granules or crystals of the applied mineral fertilisers by the stirring device.

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