CONTINUOUS FILTERING EQUIPMENT

摘要

PROBLEM TO BE SOLVED: To provide a continuous filtering equipment capable of efficiently performing washing back of a filter in a short time. SOLUTION: The filtering equipment is provided with a casing 1 having a cylindrical inner surface 2. A rotary shaft 3 is provided in the center of the casing 1. Three filters 4 are provided from the rotary shaft 3 radially to the inner surface 2 with intervals wider than the width of an inflow port 1a of the casing 1 between respective tip ends of the filters 4. In the case of washing back the filter 4, the rotary shaft 3 is rotated from a normal state of filter-treatment to allow two filters 4 in the course of filter treatment to face on one of discharge ports 5 for foreign matters provided halfway between the inflow port 1a and an outflow port 1b, and an opening/closing valve 9 of the port 5 is opened to enable to perform a simultaneous backwash of the two filters 4. Upon closing the valve 9, the operation can be returned to the state of normal treatment. COPYRIGHT: (C)2004,JPO