A Screw press operates by feeding material, such as sludge or fruit pulp, into a cylindrical chamber where a rotating screw applies pressure. As the screw turns, it moves the material through the chamber, gradually compressing it and forcing the liquid portion to pass through a perforated screen or filter. The solid portion, or cake, is pushed out of the press, while the liquid is collected separately.
The pressure exerted by the screw increases as the material moves forward, causing more liquid to be expelled. This method efficiently separates liquids from solids, making screw presses ideal for dewatering sludge, extracting juice, or pressing oil from seeds. The liquid typically passes through a filter that retains large particles.
Screw presses are known for their efficiency and low maintenance. They can handle large volumes of material and are commonly used in industries like wastewater treatment, agriculture, and food processing, where solid-liquid separation is required. The design ensures continuous operation, which is ideal for industrial-scale processes.
