Flow control valve for continuous discharge centrifugal concentrators
US6796934B1 · kind B1 · utility
14Cited by
14References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 27, 2001 |
| Grant date | Sep 28, 2004 |
| Priority date | — |
| Expiry date | Feb 27, 2021 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB04B11/02
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Prior continuous discharge centrifugal concentrators for separating higher density particles from a slurry have used pinch valves to control the flow of discharge. Such pinch valves tend to be blocked by coarse particles, requiring shutdown of the machine. The present invention provides a muscle-type valve to provide a circular orifice for the valve bore of continuously variable perimeter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.