WO1996036826A1 - Clapet anti-retour a basse pression possedant un element de fermeture maintenu a distance du siege par un element formant ressort - Google Patents

Clapet anti-retour a basse pression possedant un element de fermeture maintenu a distance du siege par un element formant ressort Download PDF

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Publication number
WO1996036826A1
WO1996036826A1 PCT/NZ1996/000043 NZ9600043W WO9636826A1 WO 1996036826 A1 WO1996036826 A1 WO 1996036826A1 NZ 9600043 W NZ9600043 W NZ 9600043W WO 9636826 A1 WO9636826 A1 WO 9636826A1
Authority
WO
WIPO (PCT)
Prior art keywords
valve
flow passage
outlet
teat
valve head
Prior art date
Application number
PCT/NZ1996/000043
Other languages
English (en)
Inventor
Mark Alexander Jenkins
Original Assignee
Mark Alexander Jenkins
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 Mark Alexander Jenkins filed Critical Mark Alexander Jenkins
Priority to AU55184/96A priority Critical patent/AU5518496A/en
Publication of WO1996036826A1 publication Critical patent/WO1996036826A1/fr

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K15/00—Check valves
    • F16K15/02—Check valves with guided rigid valve members
    • F16K15/021—Check valves with guided rigid valve members the valve member being a movable body around which the medium flows when the valve is open
    • F16K15/023—Check valves with guided rigid valve members the valve member being a movable body around which the medium flows when the valve is open the valve member consisting only of a predominantly disc-shaped flat element
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01K—ANIMAL HUSBANDRY; AVICULTURE; APICULTURE; PISCICULTURE; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
    • A01K9/00—Sucking apparatus for young stock ; Devices for mixing solid food with liquids
    • A01K9/005—Teats or nipples
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/24—Heart valves ; Vascular valves, e.g. venous valves; Heart implants, e.g. passive devices for improving the function of the native valve or the heart muscle; Transmyocardial revascularisation [TMR] devices; Valves implantable in the body
    • A61F2/2421—Heart valves ; Vascular valves, e.g. venous valves; Heart implants, e.g. passive devices for improving the function of the native valve or the heart muscle; Transmyocardial revascularisation [TMR] devices; Valves implantable in the body with non-pivoting rigid closure members

Definitions

  • This invention relates to a valve.
  • valve which is operative such that it permits full flow through the valve when the valve is in the open position yet is sufficiently sensitive and positive in operation to prevent back or reverse flow through the valve from occurring.
  • Such applications can be as diverse as the medical field on the one hand where the valve can function as, say, a heart valve and the farming industry on the other hand where the valve can be used to control flow of liquid animal feed via, say, a feeding teat.
  • a feeding teat liquid feed eg milk or a milk mixture is supplied to the teat whereupon an animal squeezing on the teat causes feed to issue from the outlet of the teat.
  • Such squeezing action can, however, also create a back or reverse flow such that the feed flows back out the inlet of the teat. Consequently the animal does not obtain the full charge of feed contained in the teat prior to the squeezing action taking place. Consequently the feeding time for. an animal to obtain a full volume of feed increases and there is also the danger that the animal will not obtain the optimum volume of feed.
  • valve to ensure that back flow is prevented or at least minimised.
  • the valve is incorporated in the teat itself at the inlet end thereof.
  • valve may prevent or minimise back flow it can also inhibit the flow of feed into the teat and thereby reduce the volume of feed available in the teat prior to the sucking action of the animal. Therefore the valve must be able to fully open the flow passage yet be sufficiently sensitive and positive to close the flow passage against back or reverse flow.
  • a valve comprising a valve body which defines a flow passage extending from an inlet end to an outlet end, a valve head adapted to close the outlet end and at least one spring element supporting the valve head and normally biasing the valve head away from engagement with said outlet.
  • valve is moulded in one piece from a plastics material and more particularly a thermoplastic elastomer.
  • a pair of spring elements are provided each being a hinged arm extending from a support element to the valve head, said support element extending over but being spaced from the outlet end of the flow passage.
  • Figure 1 is an elevation view of the valve according to one preferred form.
  • Figure 2 is a more detailed view of the valve head and spring elements supporting same
  • Figure 3 is a plan view of the valve.
  • Figure 4 is an elevation view of a further form of the invention.
  • Figure 5 is a cross-sectional elevation view on line A-A of Figure 4. DESCRIPTION OF THE PREFERRED EMBODIMENTS
  • valve is by way of example described as forming a fitting for the inlet end of a teat for the feeding of small animals. This is only one application of the valve according to the invention.
  • fields of use of the class of valves to which the present invention belongs are diverse and encompass, for example, medical uses for, say, heart valves.
  • the valve comprises a valve body 10 which in the end use application being described herein is commonly referred to as a bung which fits within the inlet end of a teat.
  • the bung 10 has an axial flow passage 11 and is provided with a peripheral flange 12 at one end. This flange engages with the edge of the teat about the inlet opening into which the bung 10 is fitted to thereby limit the extent by which the bung can be inserted.
  • the bung 10 can simply be a force fit into the teat and if so it can usefully be provided with a plurality of external circumferential ridges (not shown) which can mate with correspondingly shaped and spaced circumferential grooves in the- internal wall surface of the inlet end of the teat.
  • the bung 10 can be fixed into the inlet end of the teat by a suitable adhesive or other bonding/adhering method.
  • the internal wall surface of the flow passage 11 can be provided with circumferential ribs 26 or other protrusions to form a friction fit with the external wall surface of an end of a tube pushed therein.
  • the end of the flow passage 11 located at the flanged end of the body 10 forms the inlet end of the flow passage 11.
  • the other end of the flow passage 11 opens at end wall 13 of the body 10 and forms the outlet end.
  • a valve seat 14 can be moulded into or integrally formed in the outlet end.
  • the flow passage 11 adjacent end wall 13 can be provided with a circumferential groove 24.
  • the valve seat 14 can be formed by an insert 25 which is inserted through the inlet end so as to have a circumferential rib 26 located in groove 24 to thereby secure the insert into place in the flow passage.
  • the insert 25 has an axial bore 26 which is coaxially aligned with flow passage 11.
  • the outlet end 15 of the insert which forms seat 14 can stand proud of the external surface of wall 13.
  • Inserts 25 of different lengths can be provided. Thus by selecting an insert of a suitable length the amount by which the insert projects from wall 13 can be adjusted.
  • a valve head 16 having greater area than the cross-sectional area of the flow passage 11 or the outlet opening in the valve seat 14 is located by a pair of spring elements 17 which extend from a hoop shaped support 18 which extends from end 13 of the body 10. This valve head 16 can locate on the valve seat 14 so as to close the outlet end 15 of the flow passage 11.
  • valve 10 located within a teat any flow of liquid in the teat which tends to reverse or back flow through the flow passage 11 will contact with and cause the valve head 16 to move onto the valve seat 14. This closes outlet 15 thereby preventing back or reverse flow from occurring.
  • Such movement or pressure of liquid in the teat otherwise tending to cause back or reverse flow will generally occur as a result of an animal squeezing the teat.
  • valve is manufactured in one piece from a plastics material and more particularly a thermoplastic elastomer of which Kraton, Santoprene, Vyran and polyurethane are examples.
  • the spring elements 17 are formed as hinged arms having a first part 20 extending from the support hoop 18 and a second part 21 extending from valve head 16.
  • the arm portions 20 and 21 are coupled by a small curved portion 22 with the leg portions 20 and 21 being located one to the other at an acute angle.
  • the construction and arrangement is such that upon the valve head 16 being forced toward the hoop support 18 the angle between the legs decreases. A restoring action is thereby set up in the spring elements 17 such that upon the flow of liquid in the flow passage 11 ceasing or lessening a restoring force is applied to the valve head 16 thereby moving it back toward the valve seat 14.
  • each spring element 17 has first and second parts 20' and 21' which are joined end to end by a web 22' .
  • the opposite end of each part 20' and 21' is joined by a thin hinge 23 to the support hoop 18 and valve head 16 respectively.
  • valve the web 22' stretches as the valve head 16 moves away from the seat 14. This stretching applies the required restoring force to the valve head 16. Also a degree of restoring force may result from hinges 23.
  • the hinge elements can be thickened in cross section. This may be particularly so with the webs.
  • the valve according to the present invention thus is effective in not only preventing or at least reducing back or reverse flow through the flow passage but permits the valve to open sufficiently for full or optimum flow in the forward or correct direction in the flow passage.
  • valves used in the application of a feeding teat A problem which is often associated with valves used in the application of a feeding teat is that the valve is often affected in operation by its actual orientation. It is quite common with feeding teats to rotate the teat from time to time about its longitudinal axis so that the squeezing action of the animal does not always act on the same part of the external wall of the teat. This adjustment of the position of the teat reduces wear and hence increases the life of the teat.
  • the valve when used in medical applications will generally have a shortened body 10 with a thin membrane extending peripherally from the end (or near the end) of the body at the inlet end. This membrane will have little holes for securing to muscle, eg in heart muscle.
  • the number of spring elements can be increased if needed to increase or decrease the effective spring pressure on the valve head.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Environmental Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Animal Husbandry (AREA)
  • Biodiversity & Conservation Biology (AREA)
  • Mechanical Engineering (AREA)
  • Check Valves (AREA)

Abstract

Clapet de régulation d'un écoulement de liquide. Ce clapet possède un corps (10) comportant un passage d'écoulement (11) s'étendant depuis une extrémité d'entrée (12) vers une extrémité de sortie (13). Une tête de clapet (16) sert à fermer la sortie du passage d'écoulement. Une paire d'éléments formant ressort (17) supportent la tête de clapet (16) et sollicitent généralement cette dernière afin de la dégager de la sortie, de sorte que le clapet est normalement ouvert.
PCT/NZ1996/000043 1995-05-15 1996-05-15 Clapet anti-retour a basse pression possedant un element de fermeture maintenu a distance du siege par un element formant ressort WO1996036826A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU55184/96A AU5518496A (en) 1995-05-15 1996-05-15 Low pressure bung check valve having valve closure member he ld just off the valve seat by a spring element

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NZ27212695 1995-05-15
NZ272126 1995-05-15

Publications (1)

Publication Number Publication Date
WO1996036826A1 true WO1996036826A1 (fr) 1996-11-21

Family

ID=19925261

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/NZ1996/000043 WO1996036826A1 (fr) 1995-05-15 1996-05-15 Clapet anti-retour a basse pression possedant un element de fermeture maintenu a distance du siege par un element formant ressort

Country Status (2)

Country Link
AU (1) AU5518496A (fr)
WO (1) WO1996036826A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7204380B2 (en) * 2000-09-12 2007-04-17 Jackel International Limited Drinking vessel

Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2223944A (en) * 1937-03-26 1940-12-03 Albert E Roy Check valve
GB531916A (en) * 1939-05-22 1941-01-14 Armour & Co Improvements in feeding apparatus for suckling animals
AU350840A (en) * 1940-09-04 1941-10-09 Dunlop Perdriau Rubber Company Limited Improvements in valves forthe innertubes of pneumatic tyres
US2442656A (en) * 1946-11-29 1948-06-01 Joseph W Less Nursing nipple for bottles
US2497906A (en) * 1944-10-20 1950-02-21 Peters & Russell Inc Valved hose connection
US2803251A (en) * 1955-12-29 1957-08-20 James C White Nursing nipple
DE1027518B (de) * 1954-09-08 1958-04-03 Draegerwerk Ag Ausatemventil für Atemschutzmasken mit aus elastischem Stoff bestehender und mittig befestigter Ventilscheibe
US2922435A (en) * 1955-01-28 1960-01-26 Illinois Tool Works Grease fitting
US2946342A (en) * 1960-07-26 Dopplmaier
AU4195072A (en) * 1972-05-05 1973-08-23 Kelley Company Inc. Safety mechanism fora hydraulically operated dockboard
AU3562478A (en) * 1977-05-16 1979-11-08 Cutter Laboratories, Inc Check valve
AU4058378A (en) * 1978-10-10 1980-04-17 Silvey, Elmer R. Tree felling ram
AU4076178A (en) * 1977-10-14 1980-04-24 Soderbergs R Ingenjorsbyra Ab Fluid flow control device

Patent Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2946342A (en) * 1960-07-26 Dopplmaier
US2223944A (en) * 1937-03-26 1940-12-03 Albert E Roy Check valve
GB531916A (en) * 1939-05-22 1941-01-14 Armour & Co Improvements in feeding apparatus for suckling animals
AU350840A (en) * 1940-09-04 1941-10-09 Dunlop Perdriau Rubber Company Limited Improvements in valves forthe innertubes of pneumatic tyres
US2497906A (en) * 1944-10-20 1950-02-21 Peters & Russell Inc Valved hose connection
US2442656A (en) * 1946-11-29 1948-06-01 Joseph W Less Nursing nipple for bottles
DE1027518B (de) * 1954-09-08 1958-04-03 Draegerwerk Ag Ausatemventil für Atemschutzmasken mit aus elastischem Stoff bestehender und mittig befestigter Ventilscheibe
US2922435A (en) * 1955-01-28 1960-01-26 Illinois Tool Works Grease fitting
US2803251A (en) * 1955-12-29 1957-08-20 James C White Nursing nipple
AU4195072A (en) * 1972-05-05 1973-08-23 Kelley Company Inc. Safety mechanism fora hydraulically operated dockboard
AU3562478A (en) * 1977-05-16 1979-11-08 Cutter Laboratories, Inc Check valve
AU4076178A (en) * 1977-10-14 1980-04-24 Soderbergs R Ingenjorsbyra Ab Fluid flow control device
AU4058378A (en) * 1978-10-10 1980-04-17 Silvey, Elmer R. Tree felling ram

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7204380B2 (en) * 2000-09-12 2007-04-17 Jackel International Limited Drinking vessel

Also Published As

Publication number Publication date
AU5518496A (en) 1996-11-29

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