Centrifugal separator
US4820256A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 30, 1986 |
| Grant date | Apr 11, 1989 |
| Priority date | — |
| Expiry date | May 30, 2006 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB04B1/08
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
In a previously known centrifugal separator the separation chamber (4) of the centrifuge rotor has an inlet (9) for a mixture of two liquids and relatively heavy solids, a central outlet (23a) for separated light liquid and a periphery outlet (12) for separated solids. A third outlet (35) from the separation chamber (4), situated radially between the first said two outlets (23a, 12), communicates with a recirculation channel, which extends partly through a stationary structure and through which liquid may be conducted from the separation chamber (4) through a sensing device (38) and back to said inlet (9) for mixture. The sensing device (38) is arranged to initiate opening of the periphery outlet (12), when a certain amount of heavy liquid has been separated in the separation chamber (4). A throttle is arranged for limiting of the flow through the recirculation channel. The invention substantially resides in the feature that said throttle (37) is formed in the rotor itself between the third outlet (35) and said stationary structure (31). The periphery outlet (12) is intended to serve as an outlet for both solids and separated heavy liquid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.