What is screw oil press?

A screw oil press, also known as an oil expeller or screw press, is a machine used to extract oil from various seeds, nuts, and other oil-bearing materials. It operates by squeezing the oil-containing materials with the help of a screw or worm shaft. The pressing process typically involves the following steps:

Feeding: The oil-bearing seeds or nuts are fed into the press.

Pressing: The material is compressed as it moves along the screw shaft. The pressure and friction generated during this process cause the oil to be released from the seeds/nuts.

Oil Extraction: The extracted oil flows out through small openings or gaps in the press cage, leaving behind the pressed and de-oiled cake.

Screw oil presses are commonly used for processing a variety of oilseeds such as soybeans, sunflower seeds, rapeseeds, peanuts, and more. They are widely employed in the oil extraction industry due to their efficiency and simplicity of operation. The choice of the specific type of screw press depends on the type of oilseed being processed and the desired oil extraction efficiency.