Sewage Dehydrator Screw Filter Press Sludge Dewatering Stainless Steel

    Volute dewatering press pertains to spiral extrusion machine, which can improve desilter and sludge thickener, and save construction cost of exhause water factory. The machine replaces automatic update for filtration of filter mass for traditional sieving filteration. Consecutive separation of water and sludge is realized efficiently. Extrusion and dehydration of sludge is carried out via strong force resulting from the change of spiral spindle diameter and screw pitch, as well as tiny gap between float ring and fixing ring. Sludge is concentrated by gravity at concentration system before transfered to dehydration system. During delivery, filtration gap and screw pitch get smaller, and internal pressure is produced with resistance of back pressure plate and volume is reduced, thus realizing extrusion and dehydration.