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WO2007017446B1 - Self-cleaning filter - Google Patents

Self-cleaning filter

Info

Publication number
WO2007017446B1
WO2007017446B1 PCT/EP2006/064980 EP2006064980W WO2007017446B1 WO 2007017446 B1 WO2007017446 B1 WO 2007017446B1 EP 2006064980 W EP2006064980 W EP 2006064980W WO 2007017446 B1 WO2007017446 B1 WO 2007017446B1
Authority
WO
WIPO (PCT)
Prior art keywords
filtering membrane
filter module
disposed
pleated
membrane
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/EP2006/064980
Other languages
French (fr)
Other versions
WO2007017446A1 (en
Inventor
Valerio Vernocchi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
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
Application filed by Individual filed Critical Individual
Priority to EP06792658A priority Critical patent/EP1909941A1/en
Publication of WO2007017446A1 publication Critical patent/WO2007017446A1/en
Publication of WO2007017446B1 publication Critical patent/WO2007017446B1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • 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
    • B01D63/06—Tubular membrane modules
    • B01D63/067—Tubular membrane modules with pleated membranes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
    • B01D29/11—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with bag, cage, hose, tube, sleeve or like filtering elements
    • B01D29/13—Supported filter elements
    • B01D29/15—Supported filter elements arranged for inward flow filtration
    • B01D29/17—Supported filter elements arranged for inward flow filtration open-ended the arrival of the mixture to be filtered and the discharge of the concentrated mixture are situated on both opposite sides of the filtering element
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
    • B01D29/11—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with bag, cage, hose, tube, sleeve or like filtering elements
    • B01D29/13—Supported filter elements
    • B01D29/15—Supported filter elements arranged for inward flow filtration
    • B01D29/21—Supported filter elements arranged for inward flow filtration with corrugated, folded or wound sheets
    • B01D29/213—Supported filter elements arranged for inward flow filtration with corrugated, folded or wound sheets having a concertina shape
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
    • B01D29/88—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor having feed or discharge devices
    • B01D29/90—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor having feed or discharge devices for feeding
    • B01D29/902—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor having feed or discharge devices for feeding containing fixed liquid displacement elements or cores
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2201/00—Details relating to filtering apparatus
    • B01D2201/29—Filter cartridge constructions
    • B01D2201/291—End caps
    • B01D2201/293—Making of end caps
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2321/00—Details relating to membrane cleaning, regeneration, sterilization or to the prevention of fouling
    • B01D2321/16—Use of chemical agents
    • B01D2321/168—Use of other chemical agents

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)

Abstract

A filter module for fluids, comprising a pleated filtering membrane (6) the surface of which separates a pre-filtration volume, upstream of the filtering membrane (6), from a post-filtration volume, downstream of the filtering membrane (6), said pleated filtering membrane (6) presenting, on its surface, pleats bounded by contiguous crests (7), said filtering membrane comprising, on the pre-filtration volume side, a conveyor (10) for causing the filtrate to flow substantially between the pleats of the pleated filtering membrane (6).

Claims

AMENDED CLAIMS received by the International Bureau on 16 March 2007 (16.03.07)
1. A filter module for fluids, comprising a pleated filtering membrane (6) the surface of which separates a pre-filtration vαlume, upstream of the filtering membrane (6), from a post-filtration volurre, downstream of the filtering membrane (6), said pleated filtering membrare (6) presenting pleats bounded by contiguous crests (7) on its surface, characterised by comprising, on the pre- filtration volume side, a conveyor (10) disposed about the crests (7) of the filtering membrane (6) and leaving an inlet and outlet aperture at 1he membrane ends for the fluid, for causing the fluid to be filtered to flow substantially between the pleats of the pleated filtering membrane (6)
2. A filter module as claimed in claim 1 , characterised In that said conveyor (10) comprises an active surface (19) disposed at the crests (7) of the filtering membrane (6),
3. A filter module as claimed in claim 2, characterised in that said active surface (19) of the conveyor (10) is tangential to the crests (7) of the pleated filtering membrane (6), to form, together with the pleats of the filtering membrane (6), flow tubes through which the flu d to be filtered is conveyed. 4 A filter module as claimed in claim 1 , characterised by comprising a casing (1) within which the pleated filtering membrane (6) is disposed. 5. A filter module as claimed in claim 1, characterised in that said filtering membrane (6) is closed in such a manner as to form, bounded by a lower end and an upper end, a laterally closed cylindrical surface of substantially star- shaped cross-section with pleats disposed in the longitudinal! direction. 6. A filter module as claimed in claims 2 and 5, characterised in that said conveyor active surface (19) is defined by the inner surface of a cylindrical jacket (10) which surrounds the cylindrical surfεice of star-shaped cross-section formed by the pleated filtering membrane (6).
7. A filter module as claimed in claims 2 and 4, characterised in that said active surface (19) forms part of the inner surface of the casing (1 ). S. A filter module as claimed in claim 6, characterised in that said conveyor is a cylindrical jacket (10) of circular-ring cross -section, presenting two ends (17 and 18) and an inner active surface (19) which surrounds the pleated filtering membrane (6) forming a cylindrical surface of star -shaped cross-section.
9. A filter module as claimed in claim 6 or 8, characterised in that said jacket (10) is disposed about the central part of the cylindrical surface of the filtering membrane (6), the ends of the filtering membrane (6) emerging by a predefined length (L) from said jacket (10), to 1orm fluid passage apertures.
10. A filter module as claimed in the preceding claim, characterised in that two spacers (11, 12) are disposed on the ends of the filtering membrane (6) to maintain the position of the jacket (10) substantially central on the lateral surface of the filtering membrane (6). 11. A filter module as claimed in claim 5, characterised by comprising twc caps (8, 9) each disposed on one of the ends of the filtering membrane (6), said caps (8, 9) preventing fluid passage from the pre-filtration volume to the post- filtration volume and vice versa, through the ends of the cylinder formed by the filtering membrane (Q). 12. A filter module as claimed in claims 4 and 6, characterised in that the outer surface of said jacket (10) is in contact with the inner wall of the casing
(1).
13. A filter module as claimed in claim 6, characterised in that said jacket (10) comprises an inflatable air chamber. 14. A filter module as claimed in claim 1, characterised by comprising two caps (208), each disposed on an end edge oϊ the filtering! membrane (206), at least one of said caps (208) presenting arrrs which follow the pleats of the filtering membrane (206) such that from the pre-filtration volume side the fluid is able to enter the flow tubes by moving substantially in a straight line.
15. A filter module as claimed in the preceding claim, characterised in that the active surface (219) extends at said caps (208) as far as the end edge of the filtering membrane (206).
16. A filter module as claimed in claim 2, characterised in that said active surface is longitudinally undulated such as to partially penetrate between the pleats of the filtering membrane.
17. A filter module as claimed in claim 1 , characterised in that said pleatec filtering membrane (206) is disposed adhering to the lateral surface of εi prismatic indeformable permeable support (216) substantially of star-shaped cross-section.
18. A filter module as claimed in the preceding claim, characterised in that said indeformable permeable support (216) presents at its ends a rim (215) which extends beyond the thickness of the filtering membrane (206) when resting on the indeformable permeable support: (216).
19. A filter module as claimed in claim , characterised by comprising a prismatic indeformable permeable support (316) presenting a cylindrical internal cavity of substantially star-shaped cross -section, said pleated filtering membrane (306) being disposed adhering to the lateral surface of said internal cavity.
20. A filter module as claimed in claim 19, characterised in that said conveyor (310) comprises at its ends a closed cylinder to be inserted into the cylindrical internal cavity of said indeformable permeable support (316).
PCT/EP2006/064980 2005-08-05 2006-08-02 Self-cleaning filter Ceased WO2007017446A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP06792658A EP1909941A1 (en) 2005-08-05 2006-08-02 Self-cleaning filter

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT001553A ITMI20051553A1 (en) 2005-08-05 2005-08-05 SELF-CLEANING FILTER
ITMI2005A001553 2005-08-05

Publications (2)

Publication Number Publication Date
WO2007017446A1 WO2007017446A1 (en) 2007-02-15
WO2007017446B1 true WO2007017446B1 (en) 2007-05-10

Family

ID=37607417

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2006/064980 Ceased WO2007017446A1 (en) 2005-08-05 2006-08-02 Self-cleaning filter

Country Status (3)

Country Link
EP (1) EP1909941A1 (en)
IT (1) ITMI20051553A1 (en)
WO (1) WO2007017446A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104389757B (en) * 2014-10-18 2016-07-13 合肥多加农业科技有限公司 A kind of paddy field device for fetching water
CN109758812B (en) * 2019-03-22 2021-06-22 上海诺净环保科技有限公司 Intelligent integrated sewage treatment equipment

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4439815C2 (en) * 1994-11-08 2001-06-07 Mann & Hummel Filter Filters, in particular liquid filters
GB9609672D0 (en) * 1996-05-09 1996-07-10 Lucas Ind Plc Filter
DE10063881A1 (en) * 2000-12-21 2002-06-27 Mann & Hummel Filter filter element

Also Published As

Publication number Publication date
EP1909941A1 (en) 2008-04-16
WO2007017446A1 (en) 2007-02-15
ITMI20051553A1 (en) 2007-02-06

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Legal Events

Date Code Title Description
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