Decantation centrifuge with peripheral washing nozzles
US6193643A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Oct 29, 1998 |
| Grant date | Feb 27, 2001 |
| Priority date | — |
| Expiry date | Oct 29, 2018 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB04B1/20
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The invention refers to a decanter centrifuge particularly for sludge centrifugation, incorporating a drum, a rotor arranged therein and equipped with a helical screw for feed of sludge, a sludge outlet and a reject outlet and a flush washing device for washing (flushing) in countercurrent to the dewatered sludge. In the rotor in close connection to the blades of the helical screw are provided a number of threaded holes for connection of the nozzles of the flush washing device. In response to the washing requirement, certain or entire groups of threaded holes are closable by means of sealing plugs, so that the washing (flushing) can be effected in several consecutive steps with portions without flushing in between.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.