Patent · US Expired

Membrane filter module for filtering fluids in a cross-flow

US5228991A · kind A · utility

9Cited by

2References

21Claims

0Family size

Assignee

Seitz-Filter-Werke GmbH und Co. · DE

Inventors

Gerhard Strohm · Dexheim, DE
Wilfried Kaul · Prüm, DE
Georg Schnieder · Bad Kreuznach, DE

Key dates

Filing date	Nov 20, 1991
Grant date	Jul 20, 1993
Priority date	—
Expiry date	Nov 20, 2011

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB01D2313/21
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

In known membrane filter modules the sealing of the inlet of the faces of the capillary or hollow fiber membranes relative to the inlet of the stainless steel filter housing suffers from loosening of the sealing compound from the housing and from ruptures within the sealing compound due to different extension coefficients of the materials employed. With the inventive membrane filter module the safe employment of stainless steel filter housings with sealings and fluid distributing heads made of plastic is possible. At least a portion of the outer mantle surface of the end of the membrane bundle which is enclosed by a sealing compound or fused with plastic material is exposed so that the exposed outer mantle surface of the end of the membrane bundle may cooperate with sealing elements. Due to the fact that the sealing no longer acts on the stainless steel housing a simple and safe combination of the membrane filter module with the fluid distributing heads made of plastic is achieved.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.