EP0213783A1 - Zapfhahn für Flüssigkeitsbehälter - Google Patents

Zapfhahn für Flüssigkeitsbehälter Download PDF

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Publication number
EP0213783A1
EP0213783A1 EP86306020A EP86306020A EP0213783A1 EP 0213783 A1 EP0213783 A1 EP 0213783A1 EP 86306020 A EP86306020 A EP 86306020A EP 86306020 A EP86306020 A EP 86306020A EP 0213783 A1 EP0213783 A1 EP 0213783A1
Authority
EP
European Patent Office
Prior art keywords
closure member
valve closure
valve
tap
seat
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Withdrawn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
EP86306020A
Other languages
English (en)
French (fr)
Inventor
Henryk Dudzik
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.)
Impress Sutton Ltd
Original Assignee
Mardon Illingworth 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 Mardon Illingworth Ltd filed Critical Mardon Illingworth Ltd
Publication of EP0213783A1 publication Critical patent/EP0213783A1/de
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B67—OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
    • B67D—DISPENSING, DELIVERING OR TRANSFERRING LIQUIDS, NOT OTHERWISE PROVIDED FOR
    • B67D1/00—Apparatus or devices for dispensing beverages on draught
    • B67D1/08—Details
    • B67D1/12—Flow or pressure control devices or systems, e.g. valves, gas pressure control, level control in storage containers
    • B67D1/14—Reducing valves or control taps
    • B67D1/1405—Control taps
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B67—OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
    • B67D—DISPENSING, DELIVERING OR TRANSFERRING LIQUIDS, NOT OTHERWISE PROVIDED FOR
    • B67D3/00—Apparatus or devices for controlling flow of liquids under gravity from storage containers for dispensing purposes
    • B67D3/04—Liquid-dispensing taps or cocks adapted to seal and open tapping holes of casks, e.g. for beer
    • B67D3/043—Liquid-dispensing taps or cocks adapted to seal and open tapping holes of casks, e.g. for beer with a closing element having a linear movement, in a direction perpendicular to the seat

Definitions

  • This invention relates to a tap for a liquid container and is concerned with dispensing liquids from pressurised containers, e.g. for dispensing carbonated drinks.
  • PET containers It has been usual for carbonated drinks to be sold in glass bottles with screw-on caps, but these are being supplanted by PET containers.
  • PET enables much larger containers to be produced economically and the material is sufficiently strong to permit increased carbonisation for these larger containers.
  • a tap With the use of larger containers, it is desirable for a tap to be fitted on the container to permit the liquid to be easily dispensed when required. It is desirable for the tap to include a valve which is linearly movable between open and closed positions, since such taps can be cheaply made and are particularly convenient to operate. Such taps are used for dispensing wine from "bag-in-box" containers, for example, and this type of valve is disclosed in GB-A-977660, AU-A-403943 and GB-A-214032.
  • valves can be used for dispensing carbonated drinks, but there is a problem that poured drinks tend to be flat due to loss of carbonation during the dispensing operation.
  • the restrictor has a frusto-conical body which is received in a complementary bore.
  • the body has a conical head whose cone angle is smaller than that of the body and the apex of the cone faces the liquid flow.
  • the conical head therefore, directs liquid to a shallow annular passage around the body.
  • the flow is reduced by moving the restrictor in opposition to the liquid flow, so that the annular passage is reduced in depth.
  • valve closure member If the restrictor was to be used as a valve closure member (which is not suggested in this document) then, as the valve closure member was moved to the open position, the annular passage around the valve body would gradually increase and control of flow would be totally lost. If flow is too high, then turbulence occurs at the outlet and, if flow is too restricted, then there is a sudden expansion as the liquid leaves the constricted area, resulting in both cases in loss of carbonation. Furthermore, the valve would be substantially complicated in construction. The type of valve with which the invention is concerned, requires the valve closure member to be biased closed in the direction of flow. Bias in the reverse direction means that exceptionally high bias is required to resist the pressurised liquid and prevent leakage and this cannot be provided by a simple diaphragm.
  • GB-A-977660 discloses a conical end to a guide rod for a valve closure member.
  • the conical end directs flow to an annular passage around the guide rod.
  • the passage opens into a large chamber at the inlet side of the valve closure member. The arrangement is, therefore, totally unsuitable for carbonated liquid, due to the expansion at the chamber.
  • GB-A-2049106 is concerned with a tap for carbonated liquids.
  • the tap provides no control for flow of liquid at the inlet side of the valve closure member.
  • the liquid is caused to flow past angular edges at the valve seat and control of flow is exercised at the outlet side of the valve seat.
  • This control is exercised by opening up a smoothly divergent annular portion which opens into a spout.
  • This solution requires a complex valve structure with numerous seals, which would be expensive to produce.
  • the present invention avoids all of these problems.
  • a tap for a liquid container comprising a hollow body having an inlet end, a closed opposite end and an outlet opening between the ends, a valve seat within the body, a valve closure member biased into engagement with the valve seat to close the inlet end from the outlet opening, means actuable to lift the valve closure member off the seat to open the tap, wherein an annular passage of substantially constant cross-sectional area is defined around the valve closure member between the seat and the outlet opening, the cross-sectional area remaining substantially constant as the valve closure member is moved from closed to open positions, the valve closure member has a conical surface divergent from an apex to the annular passage, the apex facing the inlet end, and the inlet end is provided with a frusto-conical portion defining a inlet opening, and surrounding the conical portion to define an annular passage therewith, the annular passage reducing in cross-sectional area as the valve closure member moves in the opening direction.
  • valve to be cheaply constructed with a smooth non-turbulent flow in operation.
  • annular passage maintains a controlled laminar flow and the flow to the valve seat is increasingly restricted, ensuring that there is no sudden surge of liquid, with resultant loss of carbonation.
  • the tap shown comprises a screw-threaded cap 11 for screwing on a bottle neck 10.
  • the cap is integrally moulded from plastics material with a cylindrical body 12 having an inlet end 13 and an integral domed diaphragm 14 closing the opposite end.
  • An outlet opening 15 is provided in the peripheral wall of the body adjacent the diaphragm and an outlet spout 16 communicates with the outlet opening.
  • a valve stem 17 projects axially into the body from a concave inner surface of the diaphragm and is integrally moulded with the diaphragm.
  • a frusto-­conical shoulder is formed in the body interior and defines a valve seat 20.
  • a valve closure member 30 is a single plastics moulding and includes a socket portion 31 which has formations 32 permitting snap-engagement of the socket portion on the stem.
  • An annular flange 33 extends from the socket portion 31 adjacent the diaphragm 14 and has a convex surface facing and shaped complementary to the concave surface of the diaphragm.
  • the member has a conical end 36 converging to an apex 37 facing the inlet end of the body.
  • a cylindrical wall 35 encircles the socket portion and joins this conical end to the flange 33.
  • An outwardly projecting flexible annular closure flange 38 of the member co-operates with the valve seat 20 and is urged to seal against the seat by the diaphragm 14.
  • a shallow depth annular passage 40 of uniform cross-section carries liquid from the valve seat to the outlet opening 15.
  • a separately moulded body piece 50 is attached to the main body 12 and comprises an axial inlet tube 51 leading to an inlet opening 52 at the apex of a conical wall 53.
  • the conical wall has the same cone angle as the conical end 36 and is complementary to it, so that an annular chamber 54 of constant cross-section is defined between the conical wall and the conical end.
  • the cone angles may be slightly different, so that the cross-­sectional area of the chamber 54 reduces towards the valve seat.
  • the inlet tube 51 may extend at an acute angle to the axis of the tap in the same direction as the outlet spout 16 to allow a container to be substantially emptied without the necessity for manual tilting of the container.
  • the arrangement permits smooth flow of liquid from the inlet tube to the valve seat, the conical form of the chamber 54 reducing the risk of turbulence.
  • the shallow annular passage 40 permits laminar flow of the liquid to the spout 16 and there is no possibility of sudden expansion or excessive swirling causing turbulence, so that there is little carbon dioxide loss from solution.
  • the chamber 54 reduces in cross-sectional area as the valve is opened, so that any sudden rush of liquid is prevented.
  • the actuating mechanism 60 is identical with that disclosed in GB-A-2140132.
  • the mechanism is integrally moulded with the body and diaphragm and comprises a pair of divergent levers 61, 62 hinged to the body by integral hinges 63, 64.
  • Gussets 65, 66 connect the levers to the diaphragm 14 and to spring biasing member 67 also integrally formed with the diaphragm. In use, the levers are squeezed together against the resilience of the biasing member 67 to deflect the diaphragm 14 and thereby lift the valve closure member off its seat.
  • This actuating mechanism is fully described in GB-A-2140132.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Devices For Dispensing Beverages (AREA)
EP86306020A 1985-08-07 1986-08-05 Zapfhahn für Flüssigkeitsbehälter Withdrawn EP0213783A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8519776 1985-08-07
GB858519776A GB8519776D0 (en) 1985-08-07 1985-08-07 Tap for liquid container

Publications (1)

Publication Number Publication Date
EP0213783A1 true EP0213783A1 (de) 1987-03-11

Family

ID=10583413

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86306020A Withdrawn EP0213783A1 (de) 1985-08-07 1986-08-05 Zapfhahn für Flüssigkeitsbehälter

Country Status (4)

Country Link
EP (1) EP0213783A1 (de)
AU (1) AU6086286A (de)
GB (2) GB8519776D0 (de)
ZA (1) ZA865874B (de)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2277366A (en) * 1993-04-21 1994-10-26 Northvale Korting Limited Fluid control valve
FR2788326A1 (fr) * 1999-01-11 2000-07-13 Rene Erb Robinet de distribution de liquides
WO2014072010A1 (de) * 2012-11-12 2014-05-15 Sartorius Stedim Biotech Gmbh Behälter mit vorrichtung zur vermeidung von schaumbildung und verfahren zur herstellung der vorrichtung
US10131530B2 (en) 2014-05-23 2018-11-20 David S. Smith America, Inc. Liquid dispenser with valve
US10526190B2 (en) 2015-04-17 2020-01-07 Ds Smith Plastics Limited Multilayer film used with flexible packaging

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1167837A (fr) * 1955-12-02 1958-12-01 Gaskell & Chambers Ltd Robinet pour commander la distribution de liquides sous pression
GB977660A (en) * 1962-12-14 1964-12-09 Dole Valve Co Improvements in or relating to fluid control valves

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1167837A (fr) * 1955-12-02 1958-12-01 Gaskell & Chambers Ltd Robinet pour commander la distribution de liquides sous pression
GB977660A (en) * 1962-12-14 1964-12-09 Dole Valve Co Improvements in or relating to fluid control valves

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2277366A (en) * 1993-04-21 1994-10-26 Northvale Korting Limited Fluid control valve
GB2277366B (en) * 1993-04-21 1996-12-04 Northvale Korting Limited Fluid control valve
FR2788326A1 (fr) * 1999-01-11 2000-07-13 Rene Erb Robinet de distribution de liquides
WO2000041964A1 (fr) 1999-01-11 2000-07-20 Scholle Corporation Robinet de distribution de liquides
US6296157B1 (en) 1999-01-11 2001-10-02 Scholle Corporation Liquid dispensing tap
US6360925B2 (en) 1999-01-11 2002-03-26 Scholle Corporation Liquid dispensing tap
AU750100B2 (en) * 1999-01-11 2002-07-11 Scholle Ipn Corporation Liquid dispensing tap
WO2014072010A1 (de) * 2012-11-12 2014-05-15 Sartorius Stedim Biotech Gmbh Behälter mit vorrichtung zur vermeidung von schaumbildung und verfahren zur herstellung der vorrichtung
US9493334B2 (en) 2012-11-12 2016-11-15 Sartorius Stedim Biotech Gmbh Container having device for preventing foaming and method for producing the device
US10131530B2 (en) 2014-05-23 2018-11-20 David S. Smith America, Inc. Liquid dispenser with valve
US10526190B2 (en) 2015-04-17 2020-01-07 Ds Smith Plastics Limited Multilayer film used with flexible packaging

Also Published As

Publication number Publication date
ZA865874B (en) 1987-04-29
GB8519776D0 (en) 1985-09-11
GB2178827A (en) 1987-02-18
GB2178827B (en) 1989-01-05
GB8619105D0 (en) 1986-09-17
AU6086286A (en) 1987-02-12

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Inventor name: DUDZIK, HENRYK