What type of screw presses are usually used to produce cold pressed vegetable oil?

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Types of Screw Presses for Cold Pressed Vegetable Oil

Expeller Press

The expeller press is the most commonly used type of screw press for producing cold pressed vegetable oil. It consists of a continuous screw-shaped shaft that rotates within a barrel. The shaft pushes the oilseeds against a barrel, which exerts pressure and forces the oil out. This process is done at low temperatures to preserve the quality and nutrients of the oil.

Hydraulic Press

Another type of screw press used for producing cold pressed vegetable oil is the hydraulic press. In this method, the oilseeds are placed in a chamber and high pressure is applied using hydraulic cylinders to extract the oil. The advantage of this method is that it can achieve a higher extraction rate compared to the expeller press.

Combined Screw Press

A combined screw press is a type of press that combines the features of both expeller and hydraulic presses. It uses a combination of screw shaft and hydraulic pressure to extract oil from oilseeds. This method is preferred by some producers as it can achieve high extraction rates while maintaining the quality of the oil.In conclusion, the most commonly used types of screw presses for producing cold pressed vegetable oil are the expeller press, hydraulic press, and combined screw press. Each of these types has its own advantages and producers may choose the one that best fits their production needs and requirements.

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