Filter Systems

Introduction

AF series Bernoulli self-cleaning Filter is designed for continuous filtration of water on pressurized systems. AF Filter removes debris and particles from waters such as sea water, river water and the circulating cooling water. AF filter works in BERNOULLI principle, which leads to the simple and highly reliable filtering operation.
Simple and reliable structure with only two moving parts (clean disc and flushing valve), non-contact cleaning, no particle extrusion out of the filter screen, efficient filtration, low and consistant pressure drop (even < 11KPa) both when clean and dirty, very low working pressure requirement down to 30KPa, wide flow rate range from 30 t0 8000 m3/ h through single filter, with filtration degree ranging from 150 from 2000μm, no filtration interruption when self-cleaning, easy installation in horizontal or vertical position.

Working Principle

The filter screen of Bernoulli Self-cleaning Filter is cleaned by the cleaning disc mounted on the pneumatic cylinder rod.
When the cleaning action triggered, the disc moves into the filter screen and water passes through the gap between the disc and the filter screen. Flow velocity increases around the disc and the static pressure around the disc decreases because of the Bernoulli principle. Around the disc edge, the vacuum effect of lower static pressure makes the filtrate back-flush the filter screen inner surface.

Technical Features and Advantadges