Control valve for a water softener
US10359122B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 20, 2015 |
| Grant date | Jul 23, 2019 |
| Priority date | — |
| Expiry date | Dec 12, 2035 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC02F2303/16
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
A control valve with a planar seal structure having a valve body with a water inlet, water outlet, and water drainage port. A spool with a planar seal structure and having fixed valve plate and movable valve plate is disposed in the valve body. The movable valve plate is rotationally fitted to the fixed valve plate. The fixed valve plate has a plurality of through-holes. One through-hole with an arc and fan shape is in communication with the water outlet. The outer diameter of the through-hole with an arc and fan shape is greater than that of another through-hole of the fixed valve plate. The through-hole is in communication with the valve body's water inlet. The fixed valve plate has at least one arc communicating blind hole. The through-holes of the fixed valve plate are mutually fitted with the communicating blind hole.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.