Gravity filter beds are designed for continuous filtration applications
capable of removing moderate to high levels of contamination. Fluid
is pumped onto the filter bed and drains by gravity through the filter
media. Solids are captured by the filter media, while filtered fluid
collects in the lower reservoir.
The filter bed consists of a stainless steel conveyor with level control.
As the filter media removes solids, the material slowly becomes restricted
and the fluid level rises on the filter. When the fluid level reaches
the level control sensor, the conveyor drive motor is activated which
transports the used filter media and collected solids into a solids
hopper. Clean filter media is indexed allowing the filtration process
to continue uninterrupted.
Roll filter media is available in numerous material types, porosity and weights to meet a wide range of fluid filtration needs. The low cost of roll filter media provides a significant cost advantage over pressure and self cleaning filters.