Liquid purification or separation – With repair or assembling means – Sliding or rolling on guide means
Patent
1994-04-21
1996-01-09
Savage, Matthew O.
Liquid purification or separation
With repair or assembling means
Sliding or rolling on guide means
210346, 210351, 210450, 210456, 100197, 100211, B01D 2941, B01D 2982, B01D 2996
Patent
active
054826233
ABSTRACT:
A plurality of substantially parallel filter plates are assembled as a unit and are locatable within a substantially rigid outer shell to provide a closed vessel. Either or both of the unit and the shell are movable relative to the other between a position wherein the unit is sealed within the shell to enable pressurised supply to the shell of medium to be filtered via the plates and a position wherein the unit is at least partially removed from the shell to enable discharge of resultant filter cake from the plates. To improve filter efficiency, reducing the number of plates required and the pressure required, and to allow the removal of the filter plate unit when encrusted with filter cake, substantially impermeable, flexible membrane is provided as a lining to the shell and an additional shell inlet/outlet port is provided and is connected to pressure medium supply means so that a space between the lining and the shell is inflatable by pressure medium for the duration of the filtration operation. Adjacent filter plates of the unit are separated by spacer means of elastomeric material, and the filter plates and the intervening spacer means are slidably mounted on bearers with mechanical means provided for releasably pressing the plates and the spacer means together. In this way additional cake compression can be achieved as well as easy release of dry cake at the end of each cycle.
REFERENCES:
patent: 4607570 (1986-08-01), Hauser
patent: 5094760 (1992-03-01), Bratten
D & C Limited
Savage Matthew O.
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