SEPARATOR

PURPOSE:To prevent the clogging of the filtration pore of a cylindrical separator with a simple structure and to obviate the deterioration of the separation performance. CONSTITUTION:A cylindrical drum 3 is provided with a filtration pore in its peripheral side face 3a and contains a spiral guide wall 3b leading to the radial center from the peripheral side face 3a and an inlet 7 for introducing a material to be treated into the drum 3 is formed on its one end. The material is introduced from the inlet 7, the separable component is discharged to the outside from the pore as the drum 3 is rotated, and the residual component is collected at the center along the wall 3b. The residual component is transferred to an outlet 13 by a fixed screw 4 extended in the axial direction at the center and discharged.