WO2001076727A1 - Hollow fibre restraining system - Google Patents

Hollow fibre restraining system Download PDF

Info

Publication number
WO2001076727A1
WO2001076727A1 PCT/AU2001/000387 AU0100387W WO0176727A1 WO 2001076727 A1 WO2001076727 A1 WO 2001076727A1 AU 0100387 W AU0100387 W AU 0100387W WO 0176727 A1 WO0176727 A1 WO 0176727A1
Authority
WO
WIPO (PCT)
Prior art keywords
restraining system
ring
elements
spacer
restraining
Prior art date
Application number
PCT/AU2001/000387
Other languages
French (fr)
Inventor
Fufang Zha
David John Cox
Original Assignee
U.S. Filter Wastewater Group, Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=3820895&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=WO2001076727(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Priority to CA002405442A priority Critical patent/CA2405442C/en
Priority to AT01919003T priority patent/ATE433794T1/en
Priority to EP01919003.2A priority patent/EP1272262B2/en
Priority to AU4624201A priority patent/AU4624201A/en
Priority to AU2001246242A priority patent/AU2001246242B2/en
Application filed by U.S. Filter Wastewater Group, Inc filed Critical U.S. Filter Wastewater Group, Inc
Priority to DE60139004T priority patent/DE60139004D1/en
Priority to JP2001574236A priority patent/JP4808897B2/en
Priority to NZ521856A priority patent/NZ521856A/en
Publication of WO2001076727A1 publication Critical patent/WO2001076727A1/en
Priority to US10/268,600 priority patent/US6783008B2/en
Priority to US10/894,191 priority patent/US6962258B2/en
Priority to US11/056,532 priority patent/US7223340B2/en
Priority to US11/496,377 priority patent/US20070209993A1/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D65/00—Accessories or auxiliary operations, in general, for separation processes or apparatus using semi-permeable membranes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D63/00—Apparatus in general for separation processes using semi-permeable membranes
    • B01D63/02—Hollow fibre modules
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2313/00—Details relating to membrane modules or apparatus
    • B01D2313/06—External membrane module supporting or fixing means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D2401/00—Tamper-indicating means

Definitions

  • the present invention relates to a restraining system for hollow fibres used in membrane filtration systems.
  • the present invention seeks to overcome or at least ameliorate one or more of the disadvantages of the prior art or at least provide the public with a useful alternative.
  • the present invention provides a restraining system for hollow fibres including a plurality of longitudinally extending elements spaced from one another and supported by a number of discrete spacer elements, each spacer element extending generally transverse of said longitudinal elements such that in combination with said longitudinal elements
  • the cage-like structure is tubular.
  • the flange-like structure is tubular.
  • longitudinal elements are rods and the spacer elements are in the form of rings.
  • the rings may of any geometric shape and are not
  • tubular structure and rods may be of any shape.
  • the tubular structure and rods may be of any shape.
  • each ring has a number of radially extending
  • each ring has a number of radially extending
  • each cut-out being sized and shaped to
  • each ring is bevelled along each internal edge.
  • each ring is providing with a cushioning
  • the cushioning element is formed of a foam material and
  • the spacer elements may be formed from a number of sub-elements
  • cut-outs or sockets are preferably equally-spaced around the
  • the rods have a reduced diameter or width at the location
  • diameter is provided by a circumferential groove or slot.
  • plastics material typically nylon and acrylonitrile butadiene styrene (ABS).
  • the cutouts are preferably part circular in cross section with an opening slightly smaller
  • Figure 1 shows a perspective view of the restraining system according to
  • Figure 2 shows a perspective view of the spacer component of the restraining system of Figure 1 ;
  • Figure 4 shows a perspective view of the restraining system according to a
  • Figure 5 shows a perspective view of the snap ring component of the
  • Figure 6 shows a perspective view of the adaptor ring component of the restraining system of Figure 4;
  • Figure 7 shows a perspective view of the restraining system according to a third embodiment
  • Figure 8 shows a perspective view of the snap ring component of the restraining system of Figure 7;
  • Figure 9 shows a perspective view of the adaptor ring component of the restraining system of Figure 7;
  • Figure 10 shows a perspective view of the restraining system according to a fourth embodiment
  • Figure 11 shows a perspective view of the snap ring component of the restraining system of Figure 10;
  • Figure 12 shows a perspective view of the adaptor ring component of the restraining system of Figure 10.
  • Figure 13 shows an enlarged perspective view of the end of the restraining system of Figure 4.
  • the restraining system comprises a generally tubular cage-like structure 5 formed from a plurality of longitudinally extending rods 6 spaced from one another and held in position by a number of longitudinally spaced and transversely extending spacer rings 7.
  • Each spacer ring 7 in this embodiment has a number of engagement sockets 8 spaced equally around its periphery.
  • Each socket 8 is formed by part- circular opposed flanges 9 spaced to provide an interference or snap-fit with the associated rod 6.
  • the sockets 8 are slightly over semi-circular in shape to provide retention of the rods 6.
  • the rods 6 in this embodiment are provided with a circumferential groove or slot 11 to provide a reduced diameter/width at the location where they engage with the ring 7. This serves to prevent longitudinal movement of the rings 7 relative to the rods 6.
  • Each end of the tubular restraining structure 5 is provided with terminating adaptor ring 12 which, in use, mounts the structure 5 to a potting sleeve 16 or the like.
  • the adaptor ring 12 includes a inner ring 13 having a plurality of openings 14 to allow passage of fluid therethrough and a radial extending circumferential rib 15.
  • Rib 15 is again provided with a corresponding number of cut-outs 16 as those provided on the spacer rings 7 for engaging with the ends 17 of rods 6.
  • the spacer rings 7 are preferably arranged in closely-spaced pairs. Further, the number of rods and rings can be varied according to restraint requirements. As best shown in Figure 10, the density of rod numbers can also be varied along the length of the tubular structure 5 where restraint requirements vary along the length.
  • the restraining system is used to restrain a bundle of hollow fibre membranes employed in filtration systems.
  • the fibre bundle extends longitudinally within the tubular restraining system.
  • the restraining system allows fluid flow to and from the hollow fibre membranes.
  • the fibres extend between upper and lower headers which, together with the restraining system, can be used to form a replaceable fibre bundle module.
  • the cage has the added advantage of protecting the fibre bundle during deployment of the module.

Abstract

A restraining system for hollow fibres including a plurality of longitudinally extending elements (6) spaced from one another and supported by a number of discrete spacer elements (7), each spacer element (7) extending generally transverse of said longitudinal elements (6) such that in combination with said longitudinal elements (6) they define a cage-like structure (5).

Description

TITLE: HOLLOW FIBRE RESTRAINING SYSTEM
TECHNICAL FIELD
The present invention relates to a restraining system for hollow fibres used in membrane filtration systems.
BACKGROUND OF THE INVENTION
A number of different types of restraining systems usually in the form of a welded plastic mesh cage have been used in the past, however, these suffer from lack of rigidity when large apertures are required in the mesh to allow for fluid flows and are difficult to repair should any portion of the mesh be broken during transport, installation or use. While such known restraining systems are cheap and simple to manufacture they suffer from a lack of robustness in many required installations.
The present invention seeks to overcome or at least ameliorate one or more of the disadvantages of the prior art or at least provide the public with a useful alternative.
SUMMARY OF THE INVENTION
According to one aspect, the present invention provides a restraining system for hollow fibres including a plurality of longitudinally extending elements spaced from one another and supported by a number of discrete spacer elements, each spacer element extending generally transverse of said longitudinal elements such that in combination with said longitudinal elements
they define a cage-like structure.
For preference, the cage-like structure is tubular. Preferably, the
longitudinal elements are rods and the spacer elements are in the form of rings.
It will be appreciated that the rings may of any geometric shape and are not
limited to a circular shape. Similarly, the tubular structure and rods may be of
any geometric cross sectional shape.
In one preferred form, each ring has a number of radially extending
engagement formations for releasably engaging an associated rod. The
formations may be in the form of part-circular opposed flanges spaced to
provide a socket having an interference or snap-fit with the associated rod.
In another preferred form, each ring has a number of radially extending
cut-outs spaced around its periphery, each cut-out being sized and shaped to
form an interference or snap-fit with an associated rod. Preferably, the internal
surface of each ring is bevelled along each internal edge. For further
preference, the internal surface of each ring is providing with a cushioning
element. Preferably, the cushioning element is formed of a foam material and
extends past the length of each ring at both ends so as to overlap the internal
edges of each ring.
The spacer elements may be formed from a number of sub-elements
which are fixed together in use.
The cut-outs or sockets are preferably equally-spaced around the
periphery of the ring. For preference, the rods have a reduced diameter or width at the location
where they engage with an associated spacer. Preferably, the reduced
diameter is provided by a circumferential groove or slot.
The components of the system are preferably formed of generally rigid
plastics material, typically nylon and acrylonitrile butadiene styrene (ABS). The
components can be moulded or machined to the desired configuration. The cutouts are preferably part circular in cross section with an opening slightly smaller
than the diameter to provide for snap-fitting retention of the rods.
BRIEF DESCRIPTION OF THE DRAWINGS
Preferred embodiments of the invention will now be described, by way of
example only, with reference to the accompanying drawings, in which:-
Figure 1 shows a perspective view of the restraining system according to
one embodiment of the invention;
Figure 2 shows a perspective view of the spacer component of the restraining system of Figure 1 ;
Figure 3 shows an enlarged exploded perspective view of the restraining
system of Figure 1 ;
Figure 4 shows a perspective view of the restraining system according to a
second embodiment of the invention;
Figure 5 shows a perspective view of the snap ring component of the
restraining system of Figure 4; Figure 6 shows a perspective view of the adaptor ring component of the restraining system of Figure 4;
Figure 7 shows a perspective view of the restraining system according to a third embodiment;
Figure 8 shows a perspective view of the snap ring component of the restraining system of Figure 7;
Figure 9 shows a perspective view of the adaptor ring component of the restraining system of Figure 7;
Figure 10 shows a perspective view of the restraining system according to a fourth embodiment;
Figure 11 shows a perspective view of the snap ring component of the restraining system of Figure 10;
Figure 12 shows a perspective view of the adaptor ring component of the restraining system of Figure 10; and
Figure 13 shows an enlarged perspective view of the end of the restraining system of Figure 4.
DESCRIPTION OF PREFERRED EMBODIMENTS
Referring to Figures 1 to 3, the restraining system comprises a generally tubular cage-like structure 5 formed from a plurality of longitudinally extending rods 6 spaced from one another and held in position by a number of longitudinally spaced and transversely extending spacer rings 7. Each spacer ring 7 in this embodiment has a number of engagement sockets 8 spaced equally around its periphery. Each socket 8 is formed by part- circular opposed flanges 9 spaced to provide an interference or snap-fit with the associated rod 6. The sockets 8 are slightly over semi-circular in shape to provide retention of the rods 6.
Referring to Figures 4 to 13 of the drawings, each ring 7 in these embodiments has a number of radially extending cut-outs 10 equally spaced around its periphery, each cut-out 10 being sized and shaped to form an interference or snap-fit with an associated rod 6. The cut-outs 10 in this embodiment are slightly over semi-circular in shape to provide retention of the rods 6.
The rods 6 in this embodiment are provided with a circumferential groove or slot 11 to provide a reduced diameter/width at the location where they engage with the ring 7. This serves to prevent longitudinal movement of the rings 7 relative to the rods 6.
Each end of the tubular restraining structure 5 is provided with terminating adaptor ring 12 which, in use, mounts the structure 5 to a potting sleeve 16 or the like. The adaptor ring 12 includes a inner ring 13 having a plurality of openings 14 to allow passage of fluid therethrough and a radial extending circumferential rib 15. Rib 15 is again provided with a corresponding number of cut-outs 16 as those provided on the spacer rings 7 for engaging with the ends 17 of rods 6. As shown in the various embodiments, the spacer rings 7 are preferably arranged in closely-spaced pairs. Further, the number of rods and rings can be varied according to restraint requirements. As best shown in Figure 10, the density of rod numbers can also be varied along the length of the tubular structure 5 where restraint requirements vary along the length.
The restraining system is used to restrain a bundle of hollow fibre membranes employed in filtration systems. The fibre bundle extends longitudinally within the tubular restraining system. The restraining system allows fluid flow to and from the hollow fibre membranes. Typically, the fibres extend between upper and lower headers which, together with the restraining system, can be used to form a replaceable fibre bundle module. In such arrangements, the cage has the added advantage of protecting the fibre bundle during deployment of the module.
It will be appreciated, that further embodiments and exemplifications of the invention are possible without departing from the spirit or scope of the invention described.

Claims

CLAIMS:
1. A restraining system for hollow fibres including a plurality of longitudinally extending elements spaced from one another and supported by a number of discrete spacer elements, each spacer element extending generally transverse of said longitudinal elements such that in combination with said longitudinal elements they define a cage-like structure.
2. A restraining system according to claim 1 wherein the cage-like structure is tubular.
3. A restraining system according to claim 1 or claim 2 wherein the longitudinal elements are rods and the spacer elements are in the form of rings.
4. A restraining system according to claim 3 wherein each ring has a number of radially extending engagement formations for releasably engaging an associated rod.
5. A restraining system according to claim 4 wherein the formations are in the form of part-circular opposed flanges spaced to provide a socket having an interference or snap-fit with the associated rod.
6. A restraining system according to claim 3 wherein each ring has a number of radially extending cut-outs spaced around its periphery, each cut-out being sized and shaped to form an interference or snap-fit with an associated rod.
7. A restraining system according to claim 6 wherein the cut-outs are part circular in cross section with an opening slightly smaller than the diameter to provide for snap-fitting retention of the associated rod.
8. A restraining system according to any one of claims 5, 6 or 7 wherein the cut-outs or sockets are equally-spaced around the periphery of the ring.
9. A restraining system according to any one of claims 3 to 8 wherein the rods have a reduced diameter or width at the location where they engage with an associated spacer.
10. A restraining system according to claim 9 wherein the reduced diameter is provided by a circumferential groove or slot.
11. A restraining system according to anyone of the preceding claims wherein the spacer elements are formed from a number of sub-elements which are fixed together in use.
12. A restraining system according to anyone of claims 3 to 11 wherein an internal surface of each ring is bevelled along each internal edge.
13. A restraining system according to anyone of claims 3 to 12 wherein the internal surface of each ring is providing with a cushioning element.
14. A restraining system according to claim 13 wherein the cushioning element extends past the length of each ring at both ends so as to overlap the internal edges of each ring.
15. A restraining system substantially as hereinbefore described with reference to any one of the embodiments of the invention illustrated in the accompanying drawings.
PCT/AU2001/000387 2000-04-10 2001-04-06 Hollow fibre restraining system WO2001076727A1 (en)

Priority Applications (12)

Application Number Priority Date Filing Date Title
NZ521856A NZ521856A (en) 2000-04-10 2001-04-06 Hollow fibre restraining system
JP2001574236A JP4808897B2 (en) 2000-04-10 2001-04-06 Hollow fiber holding device
EP01919003.2A EP1272262B2 (en) 2000-04-10 2001-04-06 Hollow fibre restraining system
AU4624201A AU4624201A (en) 2000-04-10 2001-04-06 Hollow fibre restraining system
AU2001246242A AU2001246242B2 (en) 2000-04-10 2001-04-06 Hollow fibre restraining system
CA002405442A CA2405442C (en) 2000-04-10 2001-04-06 Hollow fibre restraining system
DE60139004T DE60139004D1 (en) 2000-04-10 2001-04-06 HOLLOW FIBER RESTRAINT SYSTEM
AT01919003T ATE433794T1 (en) 2000-04-10 2001-04-06 HOLLOW FIBER RESTRAINT SYSTEM
US10/268,600 US6783008B2 (en) 2000-04-10 2002-10-09 Hollow fibre restraining system
US10/894,191 US6962258B2 (en) 2000-04-10 2004-07-19 Hollow fiber restraining system
US11/056,532 US7223340B2 (en) 2000-04-10 2005-02-11 Hollow fibre restraining system
US11/496,377 US20070209993A1 (en) 2000-04-10 2006-07-31 Hollow fibre restraining system

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AUPQ6801 2000-04-10
AUPQ6801A AUPQ680100A0 (en) 2000-04-10 2000-04-10 Hollow fibre restraining system

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US10/268,600 Continuation US6783008B2 (en) 2000-04-10 2002-10-09 Hollow fibre restraining system

Publications (1)

Publication Number Publication Date
WO2001076727A1 true WO2001076727A1 (en) 2001-10-18

Family

ID=3820895

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/AU2001/000387 WO2001076727A1 (en) 2000-04-10 2001-04-06 Hollow fibre restraining system

Country Status (13)

Country Link
US (4) US6783008B2 (en)
EP (1) EP1272262B2 (en)
JP (1) JP4808897B2 (en)
CN (1) CN1178738C (en)
AT (1) ATE433794T1 (en)
AU (1) AUPQ680100A0 (en)
CA (1) CA2405442C (en)
DE (1) DE60139004D1 (en)
ES (1) ES2326590T3 (en)
MY (1) MY125954A (en)
NZ (1) NZ521856A (en)
TW (1) TW558449B (en)
WO (1) WO2001076727A1 (en)

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