Method and device for filtering a suspension of particles in a liquid
US4708801A · kind A · utility
4Cited by
1References
12Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 14, 1986 |
| Grant date | Nov 24, 1987 |
| Priority date | — |
| Expiry date | Apr 14, 2006 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB04B2005/0457
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
In a method and device for filtering a suspension of particles in a liquid the liquid is passed continuously through a porous membrane, particles from the suspenion gradually accumulating on the membrane and clogging its pores. The filtered liquid is caused to flow momentarily in the reverse direction to return the accumulated particles to the suspension and so unclog the membrane. To achieve this the filtered liquid is fed into one end of a conduit wound around an axis and recovered from its other end, and the conduit is rotated about its axis, the speed of rotation gradually increasing, and then suddenly stopped.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.