Filtration apparatus
US5130021A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 11, 1990 |
| Grant date | Jul 14, 1992 |
| Priority date | — |
| Expiry date | Jul 11, 2010 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D33/801
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Batch filtration is carried out within a rockable/rotatable housing, suspension to be filtered being fed in via ports in the upper region onto a curved filter fixed within the housing, and filtrate draining from below, via outlets to which vacuum may be applied. The housing is preferably cylindrical and may be mounted upon rollers or wheels so that rocking or rotating can be effected by belts or chains attached between the housing and a linearly reciprocable member, or by a rotary gear or friction drive wheel acting on the housing circumference, or by rack and pinion means, or a variety of other means. Washing of filter cake, reslurrying, drying by hot gases, and pressurization can all take place "in situ" whilst rocking continues, and discharge of cake is effected via the same ports as for inlet by turning the housing over.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.