Fluid treatment tank having air blocker
US11059727B2 · kind B2 · utility
0Cited by
8References
18Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 29, 2017 |
| Grant date | Jul 13, 2021 |
| Priority date | — |
| Expiry date | Jul 12, 2039 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC02F2303/14
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
A fluid treatment tank for an aeration filter has an air blocker separating a chamber in fluid communication with a control valve of the filter from a pocket of air above the liquid in the tank and the control valve. The air blocker contains a volume of liquid that acts as a trap that prevents or at least inhibits air in the pocket from backing up into the chamber. Contact between the control valve and air is dramatically reduced. The air blocker may comprise a baffle that directs any air flowing through the air blocker downwardly and then back upwardly before the air can escape the air blocker.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.