Reversible mixing impeller
US5316443A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Oct 4, 1991 |
| Grant date | May 31, 1994 |
| Priority date | — |
| Expiry date | Oct 4, 2011 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01F27/0724
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Liquid mixing impellers particularly designed for the chemical processing industry provide a generally axial flow when rotated in a first direction of rotation and provide a generally radial flow when rotated in the opposite direction of rotation. The blades are formed of sheet material with an edge which leads in the first direction of rotation being defined by a portion of the blade which is folded and turned in a chordwise sense through a limited extent back upon itself. The folded back leading edge forms a rearwardly facing concavity which faces the blade trailing edge. The power number in the radial flow rotation direction substantially exceeds the power number in the axial flow rotation direction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.