Filter press
US5855778A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 7, 1997 |
| Grant date | Jan 5, 1999 |
| Priority date | — |
| Expiry date | Aug 7, 2017 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D25/386
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A filter press having a horizontal stack of filter plate assemblies, in which removal of filter cake is automated by means of a vibration/shifter carriage that can be moved in steps along a stack of filter plates after a press closing head has been retracted. At each step, the carriage opens up a group of filter plates. The plates are vibrated vertically by cams carried by the carriage. The vibrating action alternately tensions and relaxes the filter cloth for dislodging accumulated filter cake. An improved cylinder and ram arrangement for actuating the closing head is also disclosed and comprises oppositely acting cylinder and ram units carried by an intermediate travelling cylinder carriage. The arrangement achieves the advantages of a telescopic cylinder and ram unit, but at lower cost.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.