Non stop clean
Automatic filter makes use of the control-volume approach to fluid flow analysis for self-cleaning

More than 250 years after Daniel Bernoulli’s description of ideal fluids in 1738, his findings are now being applied to  the filtration process. Both geometry and position of the flanges in the SAB filter ensure the deposition of dirt particles progressing in a defined manner from the end of the filter screen to the feed inlet: speed of flow within the filter is reduced and static pressure at filter entry rises until  the differential pressure  switch initiates the automatic rinsing procedure,  without interruption of the filtration process.
According to Bernoulli, the sum of dynamic and static pressure of flowing fluids remains constant. This means that static pressure increases on lowering the rate of flow, while static pressure de-creases  on increasing the rate of flow. Schünemann’s self-cleaning SAB Filter F450  utilizes  this  principle. Filtration of the medium entering the filter axially occurs  from the inside of the filter to the out-side, after  which the purified medium leaves via a radially located exit flange. The pressure ratio resulting from geometry and positioning of the flanges causes pro-gressive accumulation of impurities along the inner side of the filter in a defined manner. Deposits begin to accumulate at  the end of the filter  insert, spreading all the way  to the feed entrance location in the course of increasing operation time.