SOLID-LIQUID SEPARATOR

PURPOSE: To reduce the axial vibration even if the ununiform thickness distribution of a deposited material is caused in the circumferential direction with solid-liquid separating treatment by providing plural drill hole-shaped clarified liquid outlet holes equally spaced on a circumference with a concentric diameter a little larger than the inside diameter of the upper end plate. CONSTITUTION: When a separation drum 22 is rotated at prescribed speed of rotation by a motor driving device 29 and a liquid to be treated is fed into the separation drum 22 from a liquid feeding nozzle 32, the liquid to be treated is held on the inner surface of the separation drum 22 by centrifugal force. At this time, solid content which has received centrifugal force and has large specific gravity is subjected to sedimentation on the peripheral wall surface of the separation drum 22 and is settled to be turned into cake 40. Clarified liquid 38 from which solid content has been removed overflows clarified liquid outlet holes 39 installed on an upper end plate 23 and is discharged from an outlet nozzle 33. Since at least four or more clarified liquid outlet holes 39 in the shape of a cylinder equally spaced on a circumference with a concentric diameter along the inside diameter side are made in the upper end plate 23, phenomenon of the clarified liquid 19 deflecting in one direction is prevented.