Unitary plastic filter plate including expandable skins and plas

Details Unitary plastic filter plate including expandable skins and plas Unitary plastic filter plate including expandable skins and plas

1995-05-12

1997-09-30

Savage, Matthew O.

Liquid purification or separation

Sectional chamber press type

Plates or frames

210350, 100211, B01D 25133

Patent

active

056722729

ABSTRACT:
A filter plate which is formed in a molding operation and comprises an outer frame with integrally formed, relatively thin chamber forming walls or skins and which has an injected foam interior core. The filter plate is substantially constructed of plastic materials which are capable of being molded and thereby provides excellent heat transfer characteristics to the slurry which is being separated through the filter plate. The plate is capable of being expanded, much in the same manner as a diaphragm plate in order to improve separation characteristics, but provides excellent heat transfer characteristics and avoids the attendant disadvantages of a conventional diaphragm plate. An accessory in the nature of a filter screen having a unique construction and a method of making a unique filter screen is also disclosed.

REFERENCES:
patent: 3362032 (1968-01-01), Summers
patent: 4781829 (1988-11-01), Stanik
patent: 5210892 (1993-05-01), Johenning et al.
patent: 5452487 (1995-09-01), Leggett

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