AGRICULTURAL PRODUCT PROCESSING EXTRUDER Russian patent published in 2001 - IPC

FIELD: feed production. SUBSTANCE: extruder has housing, charging device mounted within housing, die positioned for axial displacement in housing end closure equipped with conical working surface, cylindrical auger arranged on drive shaft within housing, and conical member fixed on cylindrical auger end oriented towards die. Conical member encloses in conjunction with end closure inner surface and die annual working chamber communicated with outlet forming bushing disposed in die. Conical member is made in the form of additional conical auger with double-thread screw member whose edge part faced to die forming bushing is turned at right angle to its screw surface. Inner conical working surface of end closure is equipped with longitudinal guides made of wear-resistant material. Die may be fixed by means of thread in end closure. Extruder of such construction allows agricultural bulk product to be processed by pressure. EFFECT: increased efficiency, improved quality and wider range of agricultural products. 2 cl, 3 dwg