DEVICE FOR PRESSING OF BIRD DROPPINGS Russian patent published in 2012 - IPC A01C3/00 

FIELD: agriculture.

SUBSTANCE: device comprises a perforated casing with a hopper, a helical screw and a drive. The perforated surface of the casing is arranged in the sector 20…340° and ends with an admixture-accumulating chamber. The helical screw in the end part is equipped with pressing rolls in amount of at least three. Rolls are arranged along the helical line with even central angles, with increasing diameters from the first to the last one, determined using the formula d_n=d₁+(n-1)k, where d - diameter of the pressing roll, n pressing roll, k - progression pitch, k>0. The total length of rolls equals length of the perforated surface of the screw body, against which they rest with their cylindrical surfaces, and being equipped with damping devices. The admixture-accumulating chamber is placed in the rear part of the screw casing and has a spring-loaded cover with an adjustable opening force.

EFFECT: higher efficiency of the device and reduced power inputs.

4 cl, 3 dwg