GB2139518A - Flow-line filter - Google Patents

Flow-line filter Download PDF

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Publication number
GB2139518A
GB2139518A GB08313345A GB8313345A GB2139518A GB 2139518 A GB2139518 A GB 2139518A GB 08313345 A GB08313345 A GB 08313345A GB 8313345 A GB8313345 A GB 8313345A GB 2139518 A GB2139518 A GB 2139518A
Authority
GB
United Kingdom
Prior art keywords
housing
spring
line
filter
diameter
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.)
Withdrawn
Application number
GB08313345A
Other versions
GB8313345D0 (en
Inventor
Philip David Morgan
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.)
PEKTRON Ltd
Original Assignee
PEKTRON Ltd
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 PEKTRON Ltd filed Critical PEKTRON Ltd
Priority to GB08313345A priority Critical patent/GB2139518A/en
Publication of GB8313345D0 publication Critical patent/GB8313345D0/en
Publication of GB2139518A publication Critical patent/GB2139518A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D35/00—Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions
    • B01D35/02—Filters adapted for location in special places, e.g. pipe-lines, pumps, stop-cocks
    • 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
    • B01D29/117—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 arranged for outward flow filtration
    • 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
    • B01D29/44—Edge filtering elements, i.e. using contiguous impervious surfaces
    • B01D29/48—Edge filtering elements, i.e. using contiguous impervious surfaces of spirally or helically wound bodies
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2201/00—Details relating to filtering apparatus
    • B01D2201/04—Supports for the filtering elements
    • B01D2201/0461—Springs

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Devices For Dispensing Beverages (AREA)
  • Distillation Of Fermentation Liquor, Processing Of Alcohols, Vinegar And Beer (AREA)

Abstract

A filter for use in a flow line of a beer dispensing installation comprises a housing (10) defining a stepped through passage in which is located a filtering element in the form of a close coiled spring (28), the coils of which decrease in diameter from the upstream end, the largest diameter coil seating on a shoulder (16) defined by the through passage to prevent displacement of the spring (28) downstream through the housing (10). The location of an upstream conduit, retained in position by a connector (20) against a seal (26), prevents displacement of the spring (28) out of the upstream end of the housing (10). The spring (28) acts as a filter but does not restrict the flow rate and can be removed for cleaning and re-use. <IMAGE>

Description

SPECIFICATION Filter Apparatus for a Fluid Line This invention relates to filter apparatus for use in a fluid line and is particularly but not exclusively concerned with an in-line filter apparatus for beer dispensing installations.
It is necessary to provide a filtering arrangement in a beer dispense line to remove any foreign bodies, and previous types of filters have included a gauze extending across the line.
A gauze filter is however not particularly satisfactory, as the flow rate in the dispense line is restricted by the gauze.
According to the present invention there is provided filter apparatus for use in a flow line, the apparatus comprising a housing means for connecting fluid conduits to the housing, and a close coiled spring located in the housing, the coils of the spring decreasing in diameter in the downstream direction relative to fluid flow, whereby the spring can function as a filter in the fluid line.
Preferably the spring is releasably located in the housing.
Preferably also the apparatus includes connectors arranged to be received in the ends of the housing and annular seals.
An embodiment of the present invention will now be described by way of example only with reference to the accompanying drawing, the single figure of which is a sectional elevation of an apparatus according to the invention.
Referring to the drawing, a filter comprises a housing 10, preferably formed of a plastics material which may be a clear plastics material to enable viewing internally of the housing. The latter has a through bore of stepped configuration with a central section 12 of a smaller diameter relative to end sections 14, a first shoulder 16 being formed at either end of the central section 12, and a second shoulder 18 being formed in each of the end sections 14, but axially spaced from the respective shoulder 16. A connector 20 is adapted to be received within each end section 14, each connector 20, only one of which is shown, having an axially extending body 22 which has axial cuts defining resiliently deformable jaws of a conventional design, and an end collar 24.With the connectors 20 in place free ends of a beer dispense line tube, for example plastics tubes can then be push fitted into a respective end section 14 of the housing 10 through the respective connectors 20 whereby the jaws of the latter initially deform to allow insertion of the tubes and then the resilience of the jaws retains the tubes in position.
Within the housing 10 an annular seal 26, preferably of rubber, is located in each end section 14 to seat on the respective shoulder 18.
When the tube ends are inserted into the end sections 14, they pass through the respective seals 26 and sealingly engage thereagainst to form a fluid-tight connection.
Within the housing 10 and between the seals 26 there is also provided a close coiled spring 28, the coils of which decrease in diameter from one end to the other. The spring 28 is initially inserted through that end of the housing 10 which is to be upstream in use, with the smallest diameter end of the spring 28 facing downstream. The spring 28 is prevented from passing downstream through the central section 12 of the housing 10 as the largest diameter coil seats on the respective shoulder 16. The diameter of the seals 26 relative to the diameter of the largest coil of the spring 28 is such that the upstream seal 26 normally can prevent displacement of the spring 28 out of the upstream end of the housing 10 but the free ends of the upstream tube, when inserted, also retains the spring 28 in position.
The decreasing diameter of the spring 28 in a downstream direction enables the spring 28 to function as a filter when beer is being passed through the dispense line. The spring 28 does not restrict the flow rate of the beer and therefore is advantageous in this respect. The spring 28 can be removed from the housing 10 when the upstream end connector 20 is removed from the housing 10, simply by releasing the respective seal 26 and the spring 28 can then be cleaned and reused as necessary. It will be apparent that such a filter can be easily installed in an existing beer line simply by cutting the line and quick fitting the apparatus in position. When the housing 10 is made transparent, the condition of the spring 28 can be monitored. The pressure of the beer in the line enhances the gripping effect of the jaws of the connectors on the tube ends.
Various other modifications may be made without departing from the invention.
Whilst endeavouring in the foregoing specification to draw attention to those features of the invention believed to be of particular importance it should be understood that the applicant claims protection in respect of any patentable feature or combination of features hereinbefore referred to whether or not particular emphasis has been placed thereon.
1. Filter apparatus for use in a flow line, the apparatus comprising a housing, means for connecting fluid conduits to the housing, and a close coiled spring located in the housing, the coils of the spring decreasing in diameter in the downstream direction relative to fluid flow, whereby the spring can function as a filter in the fluid line.
2. Apparatus according to claim 1, wherein the spring is releasably located in the housing.
3. Apparatus according to claim 1 or 2, wherein the housing has a through bore of stepped configuration defining a shoulder on which seats the largest diameter coil of the spring whereby the spring is prevented from passing downstream through the housing.
4. Apparatus according to claim 3, wherein the bore of the housing defines a pair of further shoulders facing respective ends of the housing,
**WARNING** end of DESC field may overlap start of CLMS **.

Claims (10)

**WARNING** start of CLMS field may overlap end of DESC **. SPECIFICATION Filter Apparatus for a Fluid Line This invention relates to filter apparatus for use in a fluid line and is particularly but not exclusively concerned with an in-line filter apparatus for beer dispensing installations. It is necessary to provide a filtering arrangement in a beer dispense line to remove any foreign bodies, and previous types of filters have included a gauze extending across the line. A gauze filter is however not particularly satisfactory, as the flow rate in the dispense line is restricted by the gauze. According to the present invention there is provided filter apparatus for use in a flow line, the apparatus comprising a housing means for connecting fluid conduits to the housing, and a close coiled spring located in the housing, the coils of the spring decreasing in diameter in the downstream direction relative to fluid flow, whereby the spring can function as a filter in the fluid line. Preferably the spring is releasably located in the housing. Preferably also the apparatus includes connectors arranged to be received in the ends of the housing and annular seals. An embodiment of the present invention will now be described by way of example only with reference to the accompanying drawing, the single figure of which is a sectional elevation of an apparatus according to the invention. Referring to the drawing, a filter comprises a housing 10, preferably formed of a plastics material which may be a clear plastics material to enable viewing internally of the housing. The latter has a through bore of stepped configuration with a central section 12 of a smaller diameter relative to end sections 14, a first shoulder 16 being formed at either end of the central section 12, and a second shoulder 18 being formed in each of the end sections 14, but axially spaced from the respective shoulder 16. A connector 20 is adapted to be received within each end section 14, each connector 20, only one of which is shown, having an axially extending body 22 which has axial cuts defining resiliently deformable jaws of a conventional design, and an end collar 24.With the connectors 20 in place free ends of a beer dispense line tube, for example plastics tubes can then be push fitted into a respective end section 14 of the housing 10 through the respective connectors 20 whereby the jaws of the latter initially deform to allow insertion of the tubes and then the resilience of the jaws retains the tubes in position. Within the housing 10 an annular seal 26, preferably of rubber, is located in each end section 14 to seat on the respective shoulder 18. When the tube ends are inserted into the end sections 14, they pass through the respective seals 26 and sealingly engage thereagainst to form a fluid-tight connection. Within the housing 10 and between the seals 26 there is also provided a close coiled spring 28, the coils of which decrease in diameter from one end to the other. The spring 28 is initially inserted through that end of the housing 10 which is to be upstream in use, with the smallest diameter end of the spring 28 facing downstream. The spring 28 is prevented from passing downstream through the central section 12 of the housing 10 as the largest diameter coil seats on the respective shoulder 16. The diameter of the seals 26 relative to the diameter of the largest coil of the spring 28 is such that the upstream seal 26 normally can prevent displacement of the spring 28 out of the upstream end of the housing 10 but the free ends of the upstream tube, when inserted, also retains the spring 28 in position. The decreasing diameter of the spring 28 in a downstream direction enables the spring 28 to function as a filter when beer is being passed through the dispense line. The spring 28 does not restrict the flow rate of the beer and therefore is advantageous in this respect. The spring 28 can be removed from the housing 10 when the upstream end connector 20 is removed from the housing 10, simply by releasing the respective seal 26 and the spring 28 can then be cleaned and reused as necessary. It will be apparent that such a filter can be easily installed in an existing beer line simply by cutting the line and quick fitting the apparatus in position. When the housing 10 is made transparent, the condition of the spring 28 can be monitored. The pressure of the beer in the line enhances the gripping effect of the jaws of the connectors on the tube ends. Various other modifications may be made without departing from the invention. Whilst endeavouring in the foregoing specification to draw attention to those features of the invention believed to be of particular importance it should be understood that the applicant claims protection in respect of any patentable feature or combination of features hereinbefore referred to whether or not particular emphasis has been placed thereon. CLAIMS
1. Filter apparatus for use in a flow line, the apparatus comprising a housing, means for connecting fluid conduits to the housing, and a close coiled spring located in the housing, the coils of the spring decreasing in diameter in the downstream direction relative to fluid flow, whereby the spring can function as a filter in the fluid line.
2. Apparatus according to claim 1, wherein the spring is releasably located in the housing.
3. Apparatus according to claim 1 or 2, wherein the housing has a through bore of stepped configuration defining a shoulder on which seats the largest diameter coil of the spring whereby the spring is prevented from passing downstream through the housing.
4. Apparatus according to claim 3, wherein the bore of the housing defines a pair of further shoulders facing respective ends of the housing, whereby respective fluid conduits located in the ends of the housing can engage against respective ones of the further shoulders.
5. Apparatus according to claim 4, wherein a seal is located on each of the further shoulders whereby to be engaged by a respective one of the conduits.
6. Apparatus according to claim 4 or 5, wherein a connector is arranged to be received in each end of the housing for retaining the respective fluid conduit therein.
7. Apparatus according to any of the preceding claims, wherein the housing has at least a transparent part to enable viewing internally thereof.
8. Apparatus according to claim 7, wherein the housing is formed of a clear plastics material.
9. Filter apparatus substantially as hereinbefore described with reference to the accompanying drawing.
10. Any novel subject matter or combination including novel subject matter herein disclosed, whether or not within the scope of or relating to the same invention as any of the preceding claims.
GB08313345A 1983-05-14 1983-05-14 Flow-line filter Withdrawn GB2139518A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB08313345A GB2139518A (en) 1983-05-14 1983-05-14 Flow-line filter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB08313345A GB2139518A (en) 1983-05-14 1983-05-14 Flow-line filter

Publications (2)

Publication Number Publication Date
GB8313345D0 GB8313345D0 (en) 1983-06-22
GB2139518A true GB2139518A (en) 1984-11-14

Family

ID=10542763

Family Applications (1)

Application Number Title Priority Date Filing Date
GB08313345A Withdrawn GB2139518A (en) 1983-05-14 1983-05-14 Flow-line filter

Country Status (1)

Country Link
GB (1) GB2139518A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2260503A (en) * 1991-10-09 1993-04-21 Rover Group A breather
DE20010933U1 (en) * 2000-06-27 2001-09-13 Weh Erwin Filter part for fluid lines

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB282846A (en) * 1927-04-29 1928-01-05 Douglas Arnold Coates Improvements in or relating to filters and strainers for liquids
GB290703A (en) * 1927-10-10 1928-05-24 Cockburns Ltd Improvements in or relating to steam separators and the like
GB359157A (en) * 1930-09-23 1931-10-22 Harold Bernard Dowler Improvements in or relating to strainers for sink pipes and the like
GB921906A (en) * 1958-05-29 1963-03-27 Scient Design Co Improvements in or relating to means for retaining solids in tubes

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB282846A (en) * 1927-04-29 1928-01-05 Douglas Arnold Coates Improvements in or relating to filters and strainers for liquids
GB290703A (en) * 1927-10-10 1928-05-24 Cockburns Ltd Improvements in or relating to steam separators and the like
GB359157A (en) * 1930-09-23 1931-10-22 Harold Bernard Dowler Improvements in or relating to strainers for sink pipes and the like
GB921906A (en) * 1958-05-29 1963-03-27 Scient Design Co Improvements in or relating to means for retaining solids in tubes

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2260503A (en) * 1991-10-09 1993-04-21 Rover Group A breather
DE20010933U1 (en) * 2000-06-27 2001-09-13 Weh Erwin Filter part for fluid lines
WO2002000322A1 (en) * 2000-06-27 2002-01-03 Erwin Weh Filter part for fluid pipes
KR100790199B1 (en) * 2000-06-27 2007-12-31 어빈 베 Filter part for fluid pipes

Also Published As

Publication number Publication date
GB8313345D0 (en) 1983-06-22

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WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)