The invention relates to an apparatus for filtering a suspension or emulsion and comprising a bed (6, 7) of a particulate filter material arranged in a container or tank (1), one or more inlets (8) arranged at the lower part of the bed for the suspension or emulsion to be filtered, means (3) for removing...http://www.google.es/patents/US4482457?utm_source=gb-gplus-sharePatente US4482457 - Filtering apparatus
