The main working principle of screw oil press

The main working principle of screw oil press can be summarized as follows:

Basic composition and working principle

The screw type oil press is mainly composed of a feeding hopper, a screw (also known as a pressing screw), a pressing chamber (including a pressing cage), an oil pressing tank, an oil outlet, a frame, and other parts. Its working principle is mainly to use a spiral shaped screw rod to compress and rupture the oil under the pressure inside the squeezing chamber, thereby extracting the oil pressure from the oil.

Specific work process

• Feeding stage:
• The oil enters the oil press from the feeding hopper.
• The spiral rod begins to rotate, bringing the oil into the squeezing chamber.
• Squeezing stage:
• As the spiral rod continues to rotate, the oil is gradually squeezed by the pressure from the spiral rod inside the squeezing chamber.
• The volume of space inside the squeezing chamber gradually decreases, the density of the oil increases, and the pressure gradually increases.
• Friction occurs between oil particles and between oil and parts, generating heat. These heat and pressure work together to destroy the tissue cells of the oil, causing the oil to overflow from the oil line.
• Oil extraction stage:
• The squeezed oil flows out from the gap of the squeezing cage and enters the oil pressing tank or oil outlet.
• The oil residue is pressed into a flaky cake and continuously discharged from the end of the pressing shaft.

note

• When using a screw press, it is important to ensure that the machine is in a horizontal position to ensure a smooth pressing process.
• It is necessary to regularly clean and maintain the machine to prevent oil residue blockage and machine wear.
• Attention should be paid to safety during the oil pressing process to avoid accidents such as electric shock and burns.

In summary, the screw press achieves the pressing of oil and the separation of oil through the rotation of the screw rod and the pressure inside the press chamber. It has a simple working principle, easy operation, wide applicability, and high oil yield, and is one of the commonly used oil pressing equipment in the oil industry.

Soybean oil

Cottonseed Oil

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