Liquid purification or separation – Particulate material type separator – e.g. – ion exchange or... – Within flow line or flow line connected closed casing
Patent
1982-02-22
1983-11-22
Cintins, Ivars C.
Liquid purification or separation
Particulate material type separator, e.g., ion exchange or...
Within flow line or flow line connected closed casing
B01D 2320
Patent
active
044167733
ABSTRACT:
A valve mechanism is used in combination with a fluid treatment device of the type having a tank defining a treatment bed, particulate treatment material contained within the treatment bed, and a central distribution tube mounted in the bed and terminating in a plurality of distributors which provide fluid communication between the bed and the distribution tube. The valve mechanism consists of a plurality of ball valves, each connected to a different one of the distributors and having unidirectional flow restriction assemblies such that fluid flow in a first direction from the bed to the distributor tube is relatively unrestricted, and fluid flow in a second direction from the distribution tube to the treatment bed is relatively restricted. By providing a substantial flow restriction resistance in each of the distributors conduits, fluid flow through the distributors during a backwashing cycle remains relatively balanced regardless of the variation in resistance due to dirt concentration around each distributor so that the treatment material surrounding each distributor is sufficiently agitated.
REFERENCES:
patent: 2761469 (1956-09-01), Hansen
patent: 2813545 (1957-11-01), Garnik
patent: 2973097 (1961-02-01), Snider
patent: 3306504 (1967-02-01), Tischler
patent: 3625365 (1971-12-01), Armstrong et al.
patent: 4193868 (1980-03-01), Meyers
patent: 4220531 (1980-09-01), Robison
Davis Stephen H.
Simpson Daniel W.
Cintins Ivars C.
Water Refining Company, Inc.
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