OIL PRESS Russian patent published in 1997 - IPC

FIELD: oil-bearing raw material processing equipment. SUBSTANCE: oil press has cylinder with working tool positioned within cylinder and having auger-type shaft composed of cylindrical sleeves with pressing coils on their outer surface. Working tool is mounted in vertical position and is composed of sleeve-shaped section adapted for feeding, grinding and pressing of raw material and oil extraction. Working surface of feeding sections is provided with feeding auger-type blades. Outer surface of grinding sections is provided with channels widening toward lower part of working tool and provided with side cutting edges and inner surface is provided with channels narrowing downward and provided with side cutting edges. Working surface of rubbing sections is provided with helical grooves having oval-shaped profile of ridges and slots and positioned to come into contact with inner surface of cylinder during operation of press. Pressing section is composed of at least two sleeves having width equal to fractional number of pressing coil pitch value. Oil press may be provided with heat-emitters and oscillation exciter positioned within carcass, which is fixed in oil squeezing zone. EFFECT: increased efficiency, simplified construction and enhanced reliability in operation. 4 cl, 5 dwg