Vacuum membrane filter plates have a chamber below the drainage surface that is inflated after the filter cake is formed. Heated water at 175 °F – 230 °F (higher temperatures may be used with metal cores) is pumped through this cavity, both inflating the membrane against and transferring heat into the filter cake.
A constant pressure is generated by water flow, which keeps the membrane face against the filter cake as it shrinks during the drying process. A vacuum applied within the filtration chamber draws out moisture from the filter cake and will, with sufficient time, produce a bone dry filter cake product.
Contact us to learn more about our extensive range of filter plate options and whether vacuum membrane filter plates are right for your operating conditions and objectives.