United States Filter Corporation

Jwi Ltd.

David M Higgins

A filter press and method for separating solids from a slurry. The filter press includes a plurality of plates which are held in a sealed and contacting relationship with one another to form a plate stack. The plate stack includes alternating diaphragm-type squeeze plates and cloth-type chamber plates whereby two adjacent plates form a filter chamber therebetween for filtering the slurry. The diaphragm-type squeeze plates include a thin liquid impermeable diaphragm or membrane having a uniform thickness for greater flexibility and heat transfer.

Filter press with alternating diaphragm squeeze chamber plates and filtration chamber plates

An air flow sensor and method for filling a filter press which detects slowing and/or intermittent stoppage of the feed pump and signals a controller associated with a pressure regulator to increase the pressure of the air supplied to the feed pump. The air flow sensor includes a spring-biased piston slidably movable within a housing, which piston defines a flow passage therein and carries a magnet thereon. A switching device is mounted on the housing and detects the position of the piston magnet, and when the piston approaches the closed position, the switching device transmits a signal to step-up the air pressure to the feed pump.

Flow control sensor and method for filling of a filter press

A shifter mechanism for a filter press, which shifter mechanism incorporates a vibrating mechanism for effecting bumping of individual filter plates during the separation thereof from the closed stack to assist in dislodgement of filter cake from the individual filter plates. The vibrating device can selectively vibrate or bump the individual filter plates responsive to the weight of the filter plate being bumped, whereby the vibrating device will be activated only upon sensing a filter plate having a weight greater than a predetermined value so as to be indicative of an undesired quantity of filter cake being adhered thereto.

Growing community of inventors

Holland, MI, United States of America

David M Higgins