COMBINED PLOUGHSHARE Russian patent published in 2015 - IPC A01C7/20 

FIELD: agricultural industry.

SUBSTANCE: fertiliser tube is connected to a discharge cavity of a fan and provided in its upper part with a swirler in the form of a rigidly fixed screw of left-handed directivity. The swirler includes a support to which an axis is attached; a left-handed screw guide is located on the axis. A sprayer connected via a hose to the discharge cavity of the pump for supply of NPK fertilisers diluted in water is mounted behind the swirler. The sprayer includes a cylindrical housing with a thread cut in the rear part. In the inner cavity of the cylindrical housing there installed is a screw-type flow guide with left-handed winding of turns arranged on the axis. A ridger for removal of dry soil layer is installed in the front part of a knife-type post. In the lower part of the knife-type post a provision is made for toes for formation of furrows of the specified profile for fertilisers and seeds; with that, height of the toe for fertilisers is larger than height of the toe for seeds. Covering devices are installed after the knife-type post. A pneumatic seed-feeding device is installed above the seed drop tube.

EFFECT: such design will allow preventing sticking of hydrogel granules to fertiliser tube walls, providing high germinating ability of seeds of agricultural plants.

3 dwg