Solid bowl centrifuge with liquid release during rotation
US6425849B1 · kind B1 · utility
Inventor
Key dates
| Filing date | Mar 27, 2001 |
| Grant date | Jul 30, 2002 |
| Priority date | — |
| Expiry date | Mar 27, 2021 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB04B11/05
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A solid bowl centrifuge with liquid release during rotation includes a frame, solid bowl, drive device, scraper assembly, slurry spray, liquid collection trough, and speed control circuitry. The solid bowl includes a centrifuge chamber, and a liquid evacuation chamber. A plurality of openings are formed on the outer wall of the liquid evacuation chamber. The solid bowl is pivotal retained by the frame. The liquid collection trough is disposed around the liquid evacuation chamber. The drive device causes the solid bowl to rotate. The speed control circuit controls the speed of the drive device. Slurry is sprayed on to the wall of the centrifuge chamber while in rotation. The speed of the solid bowl is reduced to allow liquid to exit the centrifuge chamber through the liquid evacuation chamber into the liquid collection trough. The speed of the solid bowl is further reduced and the scraper assembly is activated to remove the solid material from the wall of the centrifuge chamber. The solid material falls out of the centrifuge chamber on to a conveyor or the like.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.