SPIRAL-SCREW MIXER-SPREADER OF MINERAL FERTILISERS Russian patent published in 2014 - IPC A01C15/00 

FIELD: agriculture.

SUBSTANCE: invention relates to agricultural machinery industry, namely, machines for mixing and application of mineral fertilisers, and can be used for mixing and distribution of other bulk materials on the surface of the field. The device comprises a hopper divided to compartments by partitions mounted with the ability to rotate, a hinged cover. The hinged cover is made in the form of a hollow cylinder inside which there are spirals having left and right winding. The dispensers are located in the lower part of the hopper compartments. In the lower part of the hopper perpendicular to the axis of the hinged cover the mixer spiral is mounted, the intake part of which is located under the dispensers of the hopper compartments, and the unloading part by means of fertiliser guide is connected with the hinged covers. The hinged covers have a sowing window which is made in the form of continuous slit located on the helical line. The pivot axes of the partitions of the hopper compartments are parallel to the axis of the mixer spiral.

EFFECT: overall application of mixtures of mineral fertilisers without their prior preparation is ensured.

3 dwg