Centrifugal separator with scraper or piston for discharging solids
US6986734B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 22, 2004 |
| Grant date | Jan 17, 2006 |
| Priority date | — |
| Expiry date | Jun 22, 2024 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB04B2009/085
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A centrifugal separator provides for the discharge of solids by either an axial-motion scraper or a piston/extrusion assembly. The axial-motion scraper is used with hard-packed or friable solids, and includes an integral feed liquid accelerator and feed holes. The piston/extrusion assembly is used with pasty solids, and includes a piston extending into a separator bowl and having openings permitting fluid communication across the piston. After high-speed separation is complete, a centrate valve closes one end of the bowl, and the piston is moved axially in the bowl by an actuator. Accumulated solids are scraped from the sides of the bowl and extruded out of the piston openings for discharge from the bowl. A bowl suspension employs a spherical mounting structure and a short, stiff spindle. A spherical portion of a bearing housing is mounted in a spherical mounting region at one end of the separator, with a cylindrical portion of the bearing housing extending along the rotational axis. A bearing and the spindle of the separator bowl are mounted within the cylindrical portion of the bearing housing. The suspension is retained by a stiff resilient ring and retaining member secured to t…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.