Principle of sludge dewatering machine
A sludge dewatering machine is a specialized mechanical equipment used for dewatering sludge. It can help us effectively reduce the volume of sludge, lower the water content in sludge, and facilitate subsequent treatment and disposal. The following are the working principles of several common screw press dewatering:
Plate and frame screw press machine
In a closed state, the sludge injected by the high-pressure pump is compressed by the plate and frame, and the water inside the sludge is discharged through the filter cloth to achieve the purpose of dewatering screw press.
Belt type sludge dewatering machine
The sludge layer is carried by two tightly tensioned filter belts, which pass through a series of regularly arranged roller drums in an S-shape. By relying on the tension of the filter belt itself, it forms a squeezing and shearing force on the sludge layer, squeezing out the capillary water in the sludge layer and achieving sludge dewatering.
Centrifugal sludge dewatering machine
Composed of a reposting and a screw conveyor with a hollow shaft, the sludge is fed into the drum by the hollow shaft, and under the centrifugal force generated by high-speed rotation, it is immediately thrown into the drum chamber. Due to different densities, solid-liquid separation occurs. Under the push of the screw conveyor, the sludge is transported to the conical end of the drum and continuously discharged from the outlet; The liquid in the liquid ring layer is continuously 'overflowed' from the weir and discharged outside the drum by gravity.
Stacked screw sludge dewatering machine
The filter body is formed by stacking a fixed ring and a moving ring, with a spiral axis passing through it. Through gravity concentration and the internal pressure formed by the back pressure plate during the propulsion process, the sludge is fully dehydrated. The filtrate is discharged from the filter gap formed by the fixed ring and the movable ring, and the sludge cake is discharged from the end of the dehydration section.