Horizontal belt filter
US5368732A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Apr 7, 1993 |
| Grant date | Nov 29, 1994 |
| Priority date | — |
| Expiry date | Apr 7, 2013 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D2011/002
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
In order to wash the lower run of a horizontal belt filter more effectively, and simultaneously provide for tensioning of the lower run, as required when progressing the belt intermittently, a dead weight roller is supported in a bight of the lower run of the filter belt and reciprocates up and down in a wash liquor vessel as a drive roller is alternately extended, so as to advance the upper run of the belt, and retracted. A one way device is located upstream of the dead weight roller to prevent backward movement of lower run. As the bight decreases and increases, rolling action of the dead weight roller rubs the belt and forces wash liquor therethrough. A plurality of dead weight rollers in one or more wash liquor vessels may be provided and they may be guided at their ends in vertical or oblique guide tracks.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.