Juntai's Overlapping Screw Sludge Dewatering Machine is an advanced spiral extrusion dewatering device that dispenses with the need for sedimentation tanks and sludge thickening tanks, thereby lowering the construction costs of wastewater treatment plants. Unlike traditional sieve filtration methods, this system adopts a revolutionary multi-ring self-cleaning filtration technology. The built-in self-cleaning mechanism ensures uninterrupted and stable solid-liquid separation performance. Through the strong squeezing force generated by the gradually changing diameter and pitch of the screw, coupled with the narrow clearances between the moving and fixed rings, the sludge achieves effective dewatering-making it a cutting-edge solution for solid-liquid separation.
Structural Principle
- The main structure of the dewatering machine consists of a filtration unit formed by multiple alternately stacked fixed and moving rings, with a spiral shaft running through the center. The front section acts as the concentration zone, while the rear section serves as the dewatering zone.
- From the concentration zone to the dewatering zone, both the gap between the fixed and moving rings and the pitch of the spiral shaft decrease progressively.
- As the spiral shaft rotates, it transports sludge from the concentration zone to the dewatering zone and simultaneously drives the moving rings to continuously clean the gaps, effectively preventing clogging issues.
- After being thickened by gravity in the concentration zone, the sludge is conveyed to the dewatering zone. During its forward movement, the steadily reducing gaps and screw pitch, combined with the resistance provided by the back-pressure plate, create significant internal pressure. This pressure gradually compresses the sludge volume, realizing efficient dewatering.
Dewatering Mechanism
Following gravity-driven thickening in the concentration zone, the sludge is transferred to the dewatering zone. As it advances, the progressively narrowing clearances between the rings, the reduced screw pitch, and the resistance exerted by the back-pressure plate collectively generate intense internal pressure. This pressure leads to a continuous reduction in sludge volume, ensuring thorough and reliable dewatering results.