Membrane plate and filter element
US7678273B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 7, 2004 |
| Grant date | Mar 16, 2010 |
| Priority date | — |
| Expiry date | Jan 15, 2026 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D2315/06
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A filter unit includes membrane plates placed together parallel to one another, which at least in zones around connecting elements for the purpose of draining permeate are connected together liquid-tight. The membrane plates because of their shape and after two membrane plates have been placed one on top of the other are provided for manufacturing a liquid-tight connection or a seal by welding. As a result unfiltered liquid flows through between the membrane plates and contamination of the permeate within a volume situated between the connecting elements is prevented. Over a number of connecting elements and zones located in between it is possible to attach a hollow profile, which is closed-off at its ends. This hollow profile in a liquid-tight manner surrounds discharge openings of the connecting elements and the zones located in between with positive material engagement. As a result, a permeate collection channel is formed, out of which and through a permeate discharge the permeate can be extracted through suction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.