Screw Volute Press Dewatering Machine for Sludge Dewater Use

   The main body of Screw/volute press dewatering machine formed by stacking a fixed ring and a moving ring, and the screw shaft runs through it. The front section is the concentration section, and the rear section is the dehydration section. The filter gap formed between the fixed ring and the moving ring and the pitch of the screw shaft gradually decrease from the concentration part to the dehydration part. While the rotation of the screw shaft pushes the sludge to be transported from the thickening part to the dewatering part, it also drives the swimming ring to clean the filter seam to prevent clogging.

Dehydration principle

    1.Concentration: When the screw push shaft rotates, the multiple fixed and movable laminations located on the periphery of the push shaft move relatively. Under the action of gravity, the water is filtered out from the relatively moving lamination gap to achieve rapid concentrate. 2. Dehydration: The concentrated sludge moves forward with the rotation of the screw shaft; along the outlet direction of the mud cake, the pitch of the screw shaft gradually decreases, the gap between the rings also gradually decreases, and the volume of the spiral cavity gradually decreases. Continuously shrinking; under the action of the back pressure plate at the outlet, the internal pressure gradually increases, and under the continuous operation of the screw shaft, the water in the sludge is squeezed and discharged, and the solid content of the filter cake is continuously increased, and finally the sludge is realized. continuous dehydration. 3. Self-cleaning: The rotation of the screw shaft drives the moving ring to rotate continuously, and the equipment relies on the movement between the fixed ring and the moving ring to realize a continuous self-cleaning process, thus cleverly avoiding the common clogging problem of traditional dehydrators.

1. Not easy to block

It has the function of self-cleaning, which does not need to be cleaned to prevent the clogging of the filter seam, reduces the water consumption for flushing, and reduces the burden of internal circulation.Good at dewatering of oily sludge.

2. Simple operation

Through the linkage between the electric control cabinet and the brewing machine, the mud feeding pump, the dosing pump, etc., 24 hours of continuous unmanned operation is realized.

3. Low speed operation

The speed of the screw shaft is about 2--3 rpm, and the power consumption is low.

Fewer failures, less noise and vibration, and safe operation.

4. Small design

Compact design, the dehydrator includes electric control cabinet, metering tank, flocculation mixing tank and dehydration main body.

Small footprint, easy maintenance and replacement; small weight, easy to carry.

5. Durable

The body is almost entirely made of stainless steel, which can maximize the service life.

The replacement parts are only the screw shaft and the traveling ring, and the service cycle is long.