Self-cleaning filter is a kind of use of the filter directly to intercept impurities in the water to remove water suspended solids, particulate matter, reduce turbidity, clean water quality, reduce system dirt, bacteria algae, rust, etc. to clean water quality and protection system other equipment normal Work precision equipment, water from the inlet into the self-cleaning filter body, due to intelligent (PLC, PAC) design, the system can automatically identify the degree of impurity deposition, to the sewage valve signal automatic sewage.