EXTRUDER Russian patent published in 2020 - IPC A23N17/00 

FIELD: agriculture.

SUBSTANCE: invention relates to agriculture, namely to devices for preparation of feedstuffs. Press extruder consists of housing 1 with loading hopper 2. In the cavity of the housing there installed is screw 3 and matrix 4 located on the housing end. Lengthwise ribs 5 with recesses 6 are arranged on housing inner side. Housing has feed zone 7 and zone of plasticisation 8. Housing and matrix are made integral and have conical shape. Diameter of body decreases in direction of rotation of screw, diameter of which increases in direction of rotation. Screw coiling step decreases along its entire length. Side walls of matrix are equipped with uniformly arranged cone-shaped holes 9 for output of finished products. Lengthwise ribs are rhomb shaped and arranged in staggered order. Housing on the side of larger diameter before the loading hopper is equipped with a cover with flange 13, in the lower part of which there is a receiver in the form of niche 11 with outlet hole 12 for flow of the squeezed out liquid.

EFFECT: higher quality of raw material grinding.

1 cl, 2 dwg