Pressure switch brine shut-off
US3946753A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Feb 6, 1974 |
| Grant date | Mar 30, 1976 |
| Priority date | — |
| Expiry date | Feb 6, 1994 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/7287
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A brine system to manufacture brine for the regeneration of ion exchange material including a brine well positioned within a brine drum. A vertically adjustable air chamber activates a diaphragm and control arm assembly which in turn controls inlet shut-off valves associated with the brine well when the water level within the drum reaches a predetermined level. The control arm has a unique cam arrangement associated therewith which prevents premature shut-off of the valves. Water enters and is withdrawn from the brine well through a down tube having a vertically adjustable lower end extending down into the brine well to a predetermined level and an upper end in communication with the shut-off valves through a series of passageways and chambers. A floating disc seal is provided within one of these chambers to shut-off the air entering the chamber after the brine is drawn down to a level below the lower end of the down tube.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.