Working principle of screw oil press

Working principle of screw oil press

The power transmitted by the main motor is transmitted to the main shaft through the gearbox. With the rotation of the pressing screw installed on the main shaft, the oil between the screws is continuously pushed forward. As the gap between the press chamber and the press screw gradually shrinks, the density of oil increases, so the pressure gradually increases. In the process of pressing, the friction between oil particles and between oil and parts generates heat, which constitutes the two major elements of pressure and heat in the oil pressing process, destroys the oil cell organization, the oil overflows from the oil line, and the cake is pushed out between the cone of the pressing screw and the cake outlet. When the spilled oil flows into the oil filter barrel through the oil pan, the vacuum pump extracts the air in the barrel, forms a negative pressure in the barrel, and the oil passes through the filter cloth, It is pumped into the oil filter barrel, and the oil residue is isolated on the filter cloth. At this time, pure oil is obtained.