A sludge dewatering centrifuge is a mechanical device that uses the principle of centrifugal sedimentation to concentrate or dewater sludge. It mainly consists of a rotating drum, a screw conveyor, a differential gear, a main bearing, and a control system.
After the sludge is fed into the rotating drum through a hollow shaft, it is immediately thrown into the drum cavity by the centrifugal force generated by the high-speed rotation. Because the sludge particles have a higher density and greater centrifugal force, they are thrown to adhere to the inner wall of the drum, forming a solid ring layer. Water, due to its lower density and smaller centrifugal force, forms a liquid ring layer only inside the solid ring layer. The sludge in the solid ring layer is slowly propelled by the screw conveyor to the conical end of the drum and continuously discharged through outlets around the drum. The liquid in the liquid ring layer continuously overflows from the weir to the outside of the drum, forming a separated liquid, which then collects and is discharged from the dewatering machine by gravity.
