products - Automatic backwash water filters - working principle

　　ASCS series and ASCSC series mesh screen have different structure, but the same principle. During the operation, the sewage flow from the inlet of the mesh screen, and the filtered clean water out from the outlet of the mesh screen, the filtered out waste was kept in the inside of filter core. When the mesh screen arrive the designed operation time or the inlet or outlet pressure differential come to the designed value, then begin the backwash, at this time, the backwash revolving arm will automatic block the inlet of every filter core one by one, and the blow-off valve will start to work automatically at the same time.
　　As the pressure of blow-off inlet lower than that of mesh screen outlet, some clean water reflux into the filter core which was blocked by backwash revolving arm, the waste in the filter core will be driven out of the pile with the influx water though the backwash revolving arm, and out the outlet of the blow-off at last. When one filter core is backwashing, the others keep normal operation. The backwash revolving arm swirl a circle makes the entire filter core washed, and finish a backwashing procedure. Additionally, the backwashing procedure can be started by pressing the button at control plate by hand.