Solid-bowl centrifuge with continuously variable liquid level
US5885202A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 30, 1997 |
| Grant date | Mar 23, 1999 |
| Priority date | — |
| Expiry date | Jun 30, 2017 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB04B2001/2083
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A solid-bowl centrifuge has a rotatable drum having an interior and a space adjacent to the interior of the drum for receiving separated off liquid conveyed from the drum. A weir disk is disposed between the interior of the drum and the chamber and is rotatable with the drum. Liquid is conveyed past an inner diameter of the weir disk to the space and that determines a level of the liquid in the interior of the drum. Two barrier disks on opposite sides of flat surfaces of the weir disk are gas-tightly joined together by a cylinder extending through the inner diameter of the weir disk. One barrier disk is immersible in the liquid in the interior of the drum and the other barrier disk is immersible in the liquid in the space. The barrier disks and cylinder define a chamber and a gas-supply channel supplies gas to the chamber to vary the pressure therein and thereby vary the level of the liquid in the interior of the drum.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.