Working Principle:
　　Utilizing the centrifugal principle of hydraulics, the flow enters the separator in a tangential direction. Impurities with higher mass are pushed by the centrifugal force toward the side wall of the cone, then slide into the sand chamber, and finally are discharged periodically. Purified water is discharged up along the cone center. The effective separation efficiency is up to 97%.

Backwashing steps of a laminated filter are as follows:

Open the sewage drain valve
Close the outlet valve
Rotate the shell back and forth until the water drained from the sewage drain valve becomes clear
Open the outlet valve, close the sewage drain valve