VERTICAL DECANTER TYPE CENTRIFUGAL SEPARATION DEVICE AND CENTRIFUGAL SEPARATION METHOD USING VERTICAL DECANTER TYPE CENTRIFUGAL SEPARATION DEVICE

摘要

To provide a vertical decanter type centrifugal separation device and so on which can perform solid-liquid separation processing by centrifugal separation and discharge processing of solid matters in parallel with each other.SOLUTION: The vertical decanter type centrifugal separation device comprises: a bowl in which a separated liquid discharge port for discharging separated liquid is formed on axial one end side and a separated solid matter discharge port for discharging separated solid matter is formed on the other end side a feeding part which feeds raw liquid as processed material to the bowl; a screw conveyor which is arranged inside the bowl and is rotationally driven at a rotational speed different from that of the bowl; and a differential speed generation mechanism which generates a differential speed between the bowel and the screw conveyor. The plurality of separated solid matter discharge ports are formed at an equal interval in a circumferential direction of the bowl, a valve which is moved between an opening position and a closing position is provided in each of the separated solid matter discharge ports and each of the valves is moved to either one side position of the opening position and the closing position due to a centrifugal force when a centrifugal force of the bowl reaches a predetermined movement centrifugal force.SELECTED DRAWING: Figure 1