AF filter works in Bernoulli Effect Principle, which leads to the simple and reliable filtering operation. AF filter can remove debris and particles in the natural water sources such as sea water or river water. Cleaning the filter screen with surface cross flow and back-flushing flow produces higher particle removal efficiency than the conventional brush filter. Particles which are larger than the screen aperture will be extruded through the screen when a brush disc is brushing and cleaning.
The flushing sequence is initiated by a timer setting or triggered by a differential pressure sensor before any blockage of the filter screen causing flow reduction.
In the pre-flushing stage, the flushing valve opens and larger particles are flushed out.
During the flushing sequence, a special shaped flushing disc mounted on a piston shaft is driven by a pneumatic cylinder moves up and down in the filter basket.
Because of the gap between the disc and the inner surface of the filter screen, the flow velocity increases locally around the disc, the static pressure is reduced in accordance with the Bernoulli Principle. The direction of the flow is reversed and the vacuum effect of lower static pressure back-flushes the filter screen inside surface with the filtered water. Thus it releases particles which are stuck to the surface of the filter basket.
The released particles are led out from the filter through the flushing outlet.
We’re innovators of high standards, using cutting-edge technologies to lead the industry forward. At AU-LIVIC, we are committed to creating the most suitable pumping and filtration solutions for your ...