Decanter centrifuge with energy dissipating inlet
US5374234A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Feb 7, 1994 |
| Grant date | Dec 20, 1994 |
| Priority date | — |
| Expiry date | Feb 7, 2014 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB04B2001/2033
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A decanter centrifuge comprises a drum (1) with a conveyor (2) containing an inlet (4). The liquid to be separated flows in a jet centrally into the inlet (4) towards an end wall (11 ), at which the liquid is radially distributed and flows axially onwards towards the second end wall (13) through an area of the inlet (4) free of members imparting an angular velocity to the liquid. The inlet (4) is provided with inlet apertures (6) positioned on a radius larger than the radius to the overflow edge (9) at the liquid discharge. The design of the inlet (4) implies that the free liquid surface in the inlet during operation is drawn far towards the axis of the drum, thereby causing excess energy supplied to the liquid during acceleration to the angular velocity of the conveyor (2) to be dissipated in the comparatively thick liquid layer before the liquid discharges into the separation space (7) through the inlet apertures (6).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.