Spiral Sludge Dewatering Machine
product picture
Features
The normal operation of traditional sludge dewatering machines requires operators to have a strong technical level, and requires a long period of system business training and guidance in advance, so the skill level of the operators is relatively high. The stacked screw sludge dehydrator is safe and simple to operate, and implements fully automated control, which is very worry-free. As long as the on-site technicians undergo simple training, they can be easily operated. It can directly dehydrate low-concentration mud, which not only reduces construction costs, but more importantly, can reduce the release of phosphorus and the generation of odor when the oxidation ditch is directly dehydrated.
1. Wide application, compact design and small footprint;
2. It has self-cleaning function. There is no need to clean the filter seams to prevent clogging;
3. Low speed operation, low power consumption and low noise;
4. It is easy to operate and can achieve 24-hour continuous unmanned operation;
5. The machine body is almost entirely made of stainless steel, which can maximize the service life.
Working Principle
The main body of the spiral dehydrator is a filter device formed by the fixed ring and the floating ring overlapping each other into a cylinder, and the spiral shaft running through it. Because the inner diameter of the spiral shaft is larger than the inner diameter of the traveling ring, the rotation of the spiral shaft drives the traveling ring to do circular motion to prevent clogging. The gap between the fixed ring and the floating ring gradually decreases along the direction of the mud cake from the thickening part to the dewatering part. After the thickening part is gravity concentrated, the sludge is transported to the dewatering part, and forced dehydration is achieved under the internal pressure generated by the back pressure plate of the drainage source.
The stacked screw sludge dewatering machine is divided into three steps when working, namely concentration, dehydration and self-cleaning.
1. Concentration: When the spiral push shaft rotates, the multiple solid and active laminations located on the periphery of the push shaft move relative to each other. Under the action of gravity, water is filtered out from the gaps between the relatively moving laminations, achieving rapid concentration.
2. Dehydration: The concentrated sludge continues to move forward as the spiral shaft rotates. Along the mud cake outlet direction, the pitch of the spiral shaft gradually becomes smaller, the gap between the rings also gradually becomes smaller, and the volume of the spiral cavity continues to shrink. , under the action of the back pressure plate at the outlet, the internal pressure gradually increases. Driven by the continuous operation of the spiral push shaft, the water in the sludge is extruded and discharged, and the solid content of the filter cake continues to increase, ultimately achieving continuous flow of the sludge. Dehydration.
3. Self-cleaning: The rotation of the spiral shaft drives 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 clogging problem of traditional dehydrators.
Technical Data
Application Scope
1. Used in papermaking, slaughtering, leather, sugar, wine, food processing, textile, printing and dyeing, petrochemical and other industrial wastewater treatment, remove suspended matter, floating matter, sediment and other solid matter;
2. Used in papermaking, alcohol, starch, food processing and other industries in the recovery of fiber, slag and other useful substances;
3. Used in urban sewage treatment instead of the initial sedimentation tank.
