Wind tunnel for cleaning and classifying solid particle form material
US5281278A · kind A · utility
4Cited by
9References
9Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 23, 1992 |
| Grant date | Jan 25, 1994 |
| Priority date | — |
| Expiry date | Apr 23, 2012 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB07B11/06
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A chamber has upwardly diverging walls so that an upward airstream has different air speeds at different heights in the chamber. When particles such as seeds are put into the chamber, they reach equilibrium at different heights depending on their weights. A horizontal conveyor airstream, much less in magnitude than the upward airstream, directs the classified-by-height particles to a side wall of the chamber, where they are removed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.