ABSTRACT
A filter press is a frame in which a number of loose slabs of filter surface may be clamped to form a series of hollow chambers capable of withstanding internal pressure. This arrangement gives a large filtering surface for a given volume of equipment and, when properly constructed of suitable materials, gives long service with a degree of reliability. The surface of the plates upon which the filter cloth rests takes a variety of forms depending on the design of the plate, the position of the feed, and the material to be handled. It is important that the liquor channels be sufficiently deep and narrow to prevent complete closure of the passage by the filtering cloth. Washing is carried out in the filter press with the simplest method to force water in through the feed passage. The cost of outside lugs is only justified where the filtering medium is subject to frequent washings or renewals.
