Screw oil press

Operation of screw oil press：

When the oil press is running, the processed oil enters the press chamber from the hopper. The spiral rotation of the press causes the material embryo to continuously push inward for pressing. Due to the fact that the material embryo is in motion in the oil press chamber, under high pressure conditions in the chamber, there is a significant frictional resistance between the material embryo and the screw, as well as between the material embryo and the chamber. This can cause friction between the material embryo and the micro material, resulting in relative motion.

On the other hand, due to the gradual increase in root diameter and decrease in pitch of the squeezed screw, when the squeezed screw rotates, the thread can force the material embryo to move forward and flip outward. At the same time, the material layer near the surface of the squeezed screw thread also rotates with the squeezed shaft. In this way, each embryo particle in the squeezing chamber does not move in the same direction at equal speed, but also has relative motion between particles.

The heat generated by friction also meets the necessary heat for the oil pressing process operation, which helps to promote the thermal denaturation of proteins in the feed embryo, damage the colloid, increase plasticity, and reduce some viscosity that is prone to oil precipitation. Therefore, the oil output rate of the oil press is increased, allowing the oil pressure in the material to be squeezed out and flow out from the circular and strip gaps.