WO1993018838A1 - Barrel neck connector - Google Patents
Barrel neck connector Download PDFInfo
- Publication number
- WO1993018838A1 WO1993018838A1 PCT/GB1993/000611 GB9300611W WO9318838A1 WO 1993018838 A1 WO1993018838 A1 WO 1993018838A1 GB 9300611 W GB9300611 W GB 9300611W WO 9318838 A1 WO9318838 A1 WO 9318838A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- barrel neck
- flanges
- neck connector
- seal
- pairs
- Prior art date
Links
- 239000004744 fabric Substances 0.000 claims abstract description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- -1 polyethylene Polymers 0.000 claims description 3
- 239000004698 Polyethylene Substances 0.000 claims description 2
- 239000003795 chemical substances by application Substances 0.000 claims description 2
- 229920000573 polyethylene Polymers 0.000 claims description 2
- 230000008961 swelling Effects 0.000 claims description 2
- 239000000706 filtrate Substances 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000009958 sewing Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- 239000004743 Polypropylene Substances 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 239000000806 elastomer Substances 0.000 description 1
- 230000005294 ferromagnetic effect Effects 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D25/00—Filters formed by clamping together several filtering elements or parts of such elements
- B01D25/12—Filter presses, i.e. of the plate or plate and frame type
- B01D25/176—Filter presses, i.e. of the plate or plate and frame type attaching the filter element to the filter press plates, e.g. around the central feed hole in the plates
Definitions
- the invention concerns a barrel neck connector particularly for use for or between spaced filter cloths in producing a filter fabric for a filter press.
- Filter cloths for use in filter presses which comprise side-by-side plates defining filter chambers therebetween are known which comprise separate filter cloths joined together by a barrel neck so positioned as to be registrable with a feed aperture in the plate, the neck being positioned to extend through the feed aperture with the individual filter cloths lying against the respective faces of the press plate.
- the present invention seeks to provide a barrel neck which may be secured to a filter cloth without the need for gluing, sewing or welding.
- a barrel neck connector comprising two pairs of flanges, said pairs of flanges being provided at opposite ends of a tube, wherein said pairs of flanges are operative to receive a filter cloth therebetween either alone or in combination with at least one seal.
- the barrel neck connector of the invention may be secured to a filter cloth without the need for an additional bonding step.
- One or more seals may be provided between at least one of the pairs of flanges .
- the filter cloth may be mounted between the flanges or between one flange and a seal or set of seals provided on the interior face of the other flange or between seals or sets of seals provided on each of the interior faces of the flanges.
- the seals may comprise an "0" ring and/or a distortable flap. The use of such seals prevents the suspension being filtered from leaking into the filtrate side of the cloth.
- a water-swellable gasket may be used as the seal means . As the gasket swells due to contact with water it creates the seal.
- the water-swellable gasket may comprise an apertured polyethylene sheet formed into a tube and containing swelling agent or a water-swellable yarn.
- Fig. 1 is a vertical cross section through one barrel neck connector in accordance with the present invention
- Fig. 2 shows possible arrangements of sealing rings for use with the barrel neck connector of Fig. 1;
- Fig. 3 shows a second barrel neck connector in accordance with the invention.
- a barrel neck connector 5 comprises a tube 10 having a pair of circular flanges 11,12,13,14 connected to either end thereof.
- the connector 5 is made from extrudable or ouldable elastomer.
- a filter cloth 15a, 15b is received between each pair of flanges.
- a seal 16 is provided between the flanges and the adjacent filter cloth. The seals 16 ensure that the suspension being filtered cannot leak into the filtrate side of the cloth 15.
- the seal 16 may comprise one or more "0" rings or flaps which could be designed to distort in use so that they provide an effective seal. It should be remembered that there is a positive pressure within each filter press chamber that will serve to force the membrane flaps towards the filter cloth.
- the water swellable substance may comprise a non-woven material or a foraminous sheet of plastics film such as that commercially available from Tredegar.
- the water- swellable seal may comprise a water-swellable yarn 17 such as that supplied by Geca. Such a yarn is easy to wind in position as is illustrated in Fig. 4.
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Filtering Materials (AREA)
Abstract
A barrel neck connector comprises two pairs of flanges (11, 12, 13, 14) provided at opposite ends of a tube (10). A filter cloth (15) is provided between each pair of flanges (11, 12, 13, 14). One or more seals (16) may be provided between the filter cloths (15) and the flanges (11, 12, 13, 14).
Description
BARREL NECK CONNECTOR TECHNICAL FIELD The invention concerns a barrel neck connector particularly for use for or between spaced filter cloths in producing a filter fabric for a filter press.
BACKGROUND ART Filter cloths for use in filter presses which comprise side-by-side plates defining filter chambers therebetween are known which comprise separate filter cloths joined together by a barrel neck so positioned as to be registrable with a feed aperture in the plate, the neck being positioned to extend through the feed aperture with the individual filter cloths lying against the respective faces of the press plate.
It is known in the art to provide a barrel neck as a flanged jointing tube and to secure the flanges each to a respective filter cloth by sewing or by utilising polypropylene attachment rings having ferromagnetic particles therein which, on being subjected to induction radiation, serve to melt the polyproylene material of the ring and cause the same to adhere to the flange and to the filter cloth.
The present invention seeks to provide a barrel neck which may be secured to a filter cloth without the need for gluing, sewing or welding.
DISCLOSURE OF INVENTION According to the present invention there is
provided a barrel neck connector comprising two pairs of flanges, said pairs of flanges being provided at opposite ends of a tube, wherein said pairs of flanges are operative to receive a filter cloth therebetween either alone or in combination with at least one seal.
The barrel neck connector of the invention may be secured to a filter cloth without the need for an additional bonding step.
One or more seals may be provided between at least one of the pairs of flanges . The filter cloth may be mounted between the flanges or between one flange and a seal or set of seals provided on the interior face of the other flange or between seals or sets of seals provided on each of the interior faces of the flanges. The seals may comprise an "0" ring and/or a distortable flap. The use of such seals prevents the suspension being filtered from leaking into the filtrate side of the cloth.
A water-swellable gasket may be used as the seal means . As the gasket swells due to contact with water it creates the seal. The water-swellable gasket may comprise an apertured polyethylene sheet formed into a tube and containing swelling agent or a water-swellable yarn.
BRIEF DESCRIPTION OF DRAWINGS
In order that the present invention may be more readily understood specific embodiments thereof will now be described by way of example only with reference
to the accompanying drawings in which:-
Fig. 1 is a vertical cross section through one barrel neck connector in accordance with the present invention;
Fig. 2 shows possible arrangements of sealing rings for use with the barrel neck connector of Fig. 1;
Fig. 3 shows a second barrel neck connector in accordance with the invention; and
Fig. 4 shows one method of locating a seal in position in the barrel neck connector of Fig. 3. BEST MODE FOR CARRYING OUT THE INVENTION Referring to the drawings a barrel neck connector 5 comprises a tube 10 having a pair of circular flanges 11,12,13,14 connected to either end thereof. The connector 5 is made from extrudable or ouldable elastomer. In use a filter cloth 15a, 15b is received between each pair of flanges. A seal 16 is provided between the flanges and the adjacent filter cloth. The seals 16 ensure that the suspension being filtered cannot leak into the filtrate side of the cloth 15. The seal 16 may comprise one or more "0" rings or flaps which could be designed to distort in use so that they provide an effective seal. It should be remembered that there is a positive pressure within each filter press chamber that will serve to force the membrane flaps towards the filter cloth.
It is quite often the case that filtration requires the separation of aqueous liquors
from a slurry. In such circumstances the use of a water-swellable substance as a seal would be particularly advantageous. As water from the filtration process comes into contact with the water-swellable gasket the gasket swells thereby having a gripping effect and providing a seal. The water swellable substance may comprise a non-woven material or a foraminous sheet of plastics film such as that commercially available from Tredegar. Alternatively, as shown in Figures 3 and 4, the water- swellable seal may comprise a water-swellable yarn 17 such as that supplied by Geca. Such a yarn is easy to wind in position as is illustrated in Fig. 4.
It is to be understood that the embodiments described above have been described by way of illustration only. Many modifications and variations are possible.
Claims
1. A barrel neck connector comprising two pairs of flanges (11,12,13,14), said pairs of flanges being provided at opposite ends of a tube (10), wherein said pairs of flanges are operative to receive a filter cloth (15) therebetween either alone or in combination with at least one seal (16).
2. A barrel neck connector as claimed in claim 1, characterised in that said seal (16) is provided between at least one of the pairs of flanges.
3. A barrel neck connector as claimed in claim 1 or claim 2, characterised in that at least one seal comprises an "O" ring and/or a distortable flap.
4. A barrel neck connector as claimed in any preceding claim, characterised in that the seal comprises a gasket that swells on contact with water.
5. A barrel neck connector as claimed in claim 4, characterised in that the gasket comprises an apertured polyethylene sheet formed into a tube and containing swelling agent.
6. A barrel neck connector as claimed in claim 4, characterised in that the gasket comprises a yarn (17) that swells when in contact with water.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB9206519.2 | 1992-03-25 | ||
| GB929206519A GB9206519D0 (en) | 1992-03-25 | 1992-03-25 | Barrel neck connector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO1993018838A1 true WO1993018838A1 (en) | 1993-09-30 |
Family
ID=10712834
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/GB1993/000611 WO1993018838A1 (en) | 1992-03-25 | 1993-03-24 | Barrel neck connector |
Country Status (3)
| Country | Link |
|---|---|
| AU (1) | AU3764293A (en) |
| GB (1) | GB9206519D0 (en) |
| WO (1) | WO1993018838A1 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007058755A2 (en) | 2005-11-14 | 2007-05-24 | Micronics, Inc. | Filter cloth connector |
| EP1923114A1 (en) * | 2006-11-16 | 2008-05-21 | Sefar AG | Filterelement, in particular plate for filter press |
| US8480891B2 (en) | 2002-09-30 | 2013-07-09 | Micronics, Inc. | Filter assembly |
| EP3482809A1 (en) | 2017-11-14 | 2019-05-15 | Sefar AG | Filter element and method for producing the same |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2008428A (en) * | 1977-09-09 | 1979-06-06 | Mosely Rubber Co Ltd | Plate for filter presses |
| DE3422574A1 (en) * | 1984-06-18 | 1985-12-19 | Hansen-BTR-GmbH, 3000 Hannover | Membrane filter plate |
| US5186998A (en) * | 1990-05-21 | 1993-02-16 | National Filter Media Corporation | Duplex filter cloth and method |
-
1992
- 1992-03-25 GB GB929206519A patent/GB9206519D0/en active Pending
-
1993
- 1993-03-24 AU AU37642/93A patent/AU3764293A/en not_active Abandoned
- 1993-03-24 WO PCT/GB1993/000611 patent/WO1993018838A1/en active Application Filing
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2008428A (en) * | 1977-09-09 | 1979-06-06 | Mosely Rubber Co Ltd | Plate for filter presses |
| DE3422574A1 (en) * | 1984-06-18 | 1985-12-19 | Hansen-BTR-GmbH, 3000 Hannover | Membrane filter plate |
| US5186998A (en) * | 1990-05-21 | 1993-02-16 | National Filter Media Corporation | Duplex filter cloth and method |
Non-Patent Citations (1)
| Title |
|---|
| SOVIET INVENTIONS ILLUSTRATED, section C, week 9042, 28 November 1990 (28.11.90), DERWENT PUBLICATIONS LTD., London, J 01 SU-1551-395-A (N DON UKR CHEM ENG) abstract. * |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8480891B2 (en) | 2002-09-30 | 2013-07-09 | Micronics, Inc. | Filter assembly |
| WO2007058755A2 (en) | 2005-11-14 | 2007-05-24 | Micronics, Inc. | Filter cloth connector |
| EP1948343A4 (en) * | 2005-11-14 | 2010-01-27 | Micronics Inc | FILTERING CANVAS CONNECTION |
| AU2006315897B2 (en) * | 2005-11-14 | 2011-05-26 | Micronics, Inc | Filter cloth connector |
| EP1923114A1 (en) * | 2006-11-16 | 2008-05-21 | Sefar AG | Filterelement, in particular plate for filter press |
| WO2008058582A1 (en) * | 2006-11-16 | 2008-05-22 | Sefar Ag | Filter element, particularly a filter press plate |
| US9278299B2 (en) | 2006-11-16 | 2016-03-08 | Sefar Ag | Filter element including a filter press plate |
| EP3482809A1 (en) | 2017-11-14 | 2019-05-15 | Sefar AG | Filter element and method for producing the same |
Also Published As
| Publication number | Publication date |
|---|---|
| GB9206519D0 (en) | 1992-05-06 |
| AU3764293A (en) | 1993-10-21 |
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