Principle and Structure :
Screw expeller pressing is to separate the oil from oil bearing materials by the pressing power which comes from the change of chamber volume, drive from screw worm, resistance of curve teeth at press rings and extrusion friction between oil materials. Under the big pressure created in press chamber, the oil can be discharged from gap of press bars and oil trough of press rings. Either big scale and small scale of screw oil expeller, they have similar theories in screw expeller pressing. Because the screw type seed oil expeller is mainly used by extrusion theory, so it is also called as oil extruder or oil extrusion process.
Features of oil press machine :
* Cast iron machine base;
* Special gear box structure make the rotating speed averagely;
* Main parts of chamber through the processing of high-temperature tempering and low temperature quenching;
* Cake thickness can be adjusted once the machine stop running;
* Superior grade oil cake;
* Compact structure, stable function, simple maintenance.