Rotary filtration device
US4897192A · kind A · utility
Inventor
Key dates
| Filing date | Dec 28, 1988 |
| Grant date | Jan 30, 1990 |
| Priority date | — |
| Expiry date | Dec 28, 2008 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D33/74
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A filtration device includes in a pressure vessel a driven rotary shaft having a longitudinal bore. Fluid suspension to be processed to recover the fluid is expelled from distributing conduit, situated either in the shaft or in the vessel, the outlets of which open to the cavity of the pressure vessel at central processing zones proximate the shaft adjacent the radially inward portions of annular filtration discs secured to the shaft. The filtration discs are laminates in which an inner conducting support layer is enclosed by an outer filtration layer. The layers are porous, the pores are in fluidic communication, and the pores of the inner layer are larger than the pores in the outer layer. Fluid collecting in the outer layer of a spinning filter disc flows from the inner layer through collecting passageways to the longitudinal bore in the shaft, and is removed from the vessel through a conduit fluidly communicating with longitudinal bore.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.