0.2KW 12kg/H Screw Press Dewatering Machine Sewage Sludge Treatment

Volute Screw Press Sludge Dewatering Machine for Sewage Sludge Treatment

Features Of Sludge Dewatering Machine

NOT EASY TO BLOCK: unique dynamic and static ring filter slot structure makes the device not easy to block;

CONTINUOUS AUTOMATIC OPERATION: automatic control is adopted, no personnel are

required to operate the equipment, and 24 hours of continuous unmanned operation;

SAVING OPERATION COST: integrated design, compact design, significant savings in operating costs; 24-hour fully-automatic unmanned operation, greatly reducing labor costs; equipment covers a small area, reducing civil engineering investment;

LIGHT WEIGHT AND DURABLE: The body is almost entirely made of stainless steel, and the replacement parts are only the spiral shaft and the moving ring, which have a long service life and are durable.

Structure and Working Principle

The core part of the screw sludge dewatering machine is one or several groups of filter units composed of a screw drive shaft, multiple fixed laminations and multiple floating laminations. Each filter unit is divided into two parts: concentration section and dehydration section. From the sewage inlet of the concentration section to the mud cake outlet of the dewatering section, the pitch of the screw shaft gradually decreases, and the gap between the fixed ring and the moving ring gradually changes. small. There is a back pressure plate at the sludge outlet to adjust the pressure in the spiral cavity. The spiral sludge dewatering machine completes the thickening and squeezing and dewatering of the sludge in one cylinder, replacing the traditional filter cloth and centrifugal filtration method with a unique and subtle filter body mode.

Working Process

1. Thickening: When the screw drive shaft rotates, the multiple solid and active laminations arranged on the periphery of the drive shaft move relative to each other. Under the action of gravity, water is filtered out of the relatively moving lamination gap to achieve rapid concentration.

2. Dewatering: The concentrated sludge moves forward with the rotation of the screw shaft; along the direction of the mud cake outlet, the pitch of the screw shaft gradually decreases, and the gap between the rings gradually decreases, and the volume of the spiral cavity Constantly shrinking; under the action of the back pressure plate at the outlet, the internal pressure gradually increases. Under the continuous continuous operation of the screw drive shaft, the water in the sludge is squeezed and discharged, and the solid content of the filter cake continues to increase, finally achieving sludge Continuous dehydration.

3. Self-cleaning: The rotation of the screw shaft pushes the moving ring to continuously rotate. The equipment relies on the movement between the fixed ring and the moving ring to achieve a continuous self-cleaning process, thereby cleverly avoiding the common blocking problem of traditional dehydrators.