Pressurised water releasing nozzle for generating microbubbles in a flotation plant
US7651620B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | May 14, 2009 |
| Grant date | Jan 26, 2010 |
| Priority date | — |
| Expiry date | May 14, 2029 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB03D1/242
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The inventive nozzle comprises a first releasing stage (1) for producing a pre-release by absorbing from 5 to 20% of available pressure, a second releasing stage (2) wherein a substantial release is carried out and the pressurised water passes from a saturation pressure to an output nozzle pressure, an intermediate chamber (3) in the form of a transition chamber in which the pressurised water approaches the saturation pressure by absorbing from 5 to 30% of the available pressure and an outlet tube (3) consisting of a sudden release and cavitation confinement tube whose minimum length (1) substantially corresponds to a distance separating the end of said tube on the second release stage side from a readhesion point of jets to the tube wall at the angle of divergence (alpha) thereof ranging from 3 to 12 DEG before readhesion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.