SPIRAL-SCREW MIXER-DISTRIBUTOR OF MINERAL FERTILISERS Russian patent published in 2017 - IPC A01C15/00 

FIELD: agriculture.

SUBSTANCE: device contains a hopper divided into compartments by partitions that are rotatably mounted, rotatable casings made in the form of a hollow cylinder, with a seeding window located along a screw line and made in the form of a continuous slit. Inside the rotatable casing there are spirals having left and right winding. Dispensers are located at the bottom of hopper compartments. In the lower part of hopper, perpendicular to the axis of rotatable casing, is a mixing spiral, whose axes are parallel to the axis of rotation of the hopper compartments partitions. Inside the mixing spiral an additional spiral is installed, the outer diameter of which is 0.5…0.9 of inner diameter of mixing spiral. The direction of additional spiral windings is opposite to the direction of mixing spiral windings. The intake part of mixing spiral is located under the dispensers of hopper compartments. The unloading part is connected with the rotatable casings by means of fertiliser guide.

EFFECT: use of the invention allows to increase the intensity of mixing fertilisers.

3 dwg