Brining system
US4889623A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Nov 2, 1987 |
| Grant date | Dec 26, 1989 |
| Priority date | — |
| Expiry date | Nov 2, 2007 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/7877
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
A brining system including a brine reservoir containing a supply of salt and a brine valve assembly disposed in the reservoir below the level of the salt and including a vessel for accumulating a predetermined quantity of fluid to be discharged into the reservoir to form a regeneration solution. A control valve forming part of the brine valve assembly includes a spool member shiftable between two positions. In one position a fluid supply line is communicated with the accumulating vessel and in a second position the vessel is communicated with the brine reservoir. The spool includes effective pressure areas for monitoring pressures in the supply line and the vessel. When a predetermined level in the accumulating vessel is reached, a flow of fluid into the vessel is terminated and the resulting change in pressure sensed by the spool causes it to shift to a position at which fluid in the vessel is discharged into the brine reservoir while fluid flow from the supply line is concurrently terminated. During a regeneration cycle, "suction" pressures generated in the supply line cause the spool to return to its first position. In one embodiment, the vessel includes a check ball controlled …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.