Sequence controller system for regenerating water treatment unit

Details Sequence controller system for regenerating water treatment unit Sequence controller system for regenerating water treatment unit

1989-06-08

1991-02-05

Spear, Frank

Liquid purification or separation

Constituent mixture variation responsive

13762418, 210138, 210142, 210143, B01D 2130

Patent

active

049902458

ABSTRACT:
A sequence controller system for regenerating a plurality of water treatment units in a water treatment plant. Each of the water treatment units has a timer and a multi-port valve for sequencing each of the water treatments units through successively repeating cycles of service and regeneration. The sequence controller system has a priority specifying means for setting the time intervals by which only one of each water treatment unit that is ready for regeneration, at the same time, is permitted to begin its regeneration cycle. The sequence controller system also has a common interlock connection between all of the water treatment units to lockout all of the water treatment units from beginning their regeneration cycles except for the water treatment unit that has been priority specified by having the lower set time interval before beginning its regeneration cycle.

REFERENCES:
patent: 3366241 (1968-01-01), McMorris
patent: 3482697 (1969-12-01), Tremont et al.
patent: 3976101 (1976-08-01), Bassett
patent: 4275448 (1981-06-01), Ledall
patent: 4490249 (1984-12-01), Seal
patent: 4536845 (1985-08-01), Devale et al.
Publication by Fuji Electrical Rev., vol. 24, Issue No. 1, "Micro-Controller System for Water and Sewage Works", Ito et al., 1978.

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