WO1993017954A1 - Dispositif de branchement permettant d'unir une tete distributrice au clapet d'un conteneur - Google Patents

Dispositif de branchement permettant d'unir une tete distributrice au clapet d'un conteneur Download PDF

Info

Publication number
WO1993017954A1
WO1993017954A1 PCT/DK1993/000084 DK9300084W WO9317954A1 WO 1993017954 A1 WO1993017954 A1 WO 1993017954A1 DK 9300084 W DK9300084 W DK 9300084W WO 9317954 A1 WO9317954 A1 WO 9317954A1
Authority
WO
WIPO (PCT)
Prior art keywords
sealing ring
slide
valve
dispenser head
coupling arrangement
Prior art date
Application number
PCT/DK1993/000084
Other languages
English (en)
Inventor
Per Kurt Augustinus
Birger Møller WOLLESEN
Original Assignee
Micro Matic A/S
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 Micro Matic A/S filed Critical Micro Matic A/S
Priority to DE4390855A priority Critical patent/DE4390855C2/de
Priority to AU37451/93A priority patent/AU3745193A/en
Priority to EP93906466A priority patent/EP0628016B1/fr
Priority to GB9417838A priority patent/GB2280176B/en
Priority to DE4390855T priority patent/DE4390855T1/de
Publication of WO1993017954A1 publication Critical patent/WO1993017954A1/fr

Links

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
    • B67D1/0829—Keg connection means
    • B67D1/0831—Keg connection means combined with valves
    • B67D1/0832—Keg connection means combined with valves with two valves disposed concentrically

Definitions

  • the invention concerns a coupling arrangement for coupling 5 a dispenser head to a valve mounted in a connecting piece on a container for a liquid, such as beer under pressure from a gas, e.g. C0 2 , said dispenser head comprising; a gas inlet; a hollow slide slidable by means of a handgrip between a lower position in which the valve is open and
  • the liquid can flow out through the hollow slide, and an upper position in which the valve is closed; an elastome- ric sealing ring which, co-axial with the slide, is ar ⁇ ranged axially slidably in a recess downwardly in the dis ⁇ season head and serves to form a seal between said head
  • the sealing ring is retained in the dispenser head by means of a ring- shaped rib which is provided on the inner side of the re ⁇ cess and engages a corresponding groove in the sealing
  • the British patent specification 2 185 470 describes a coupling arrangement in which it has been attempted to solve the above-mentioned problem of removing the dis ⁇ glucose head.
  • the sealing ring is mounted to be somewhat axially slidable in the recess of the dis ⁇ dioxide head, and the slide is downwardly provided with an outwardly directed collar which lifts the sealing ring slightly clear of the upper side of the valve when the slide is moved up toward its upper position by applying an upward pull to the handgrip of the dispenser head.
  • the confined pressure gas in the cavity of the dispenser head will then escape below the sealing ring and relieve the pressure on it, following which the dispenser head can be removed without any difficulty.
  • the force required to lift the sealing ring depends upon the pressure to which it is subjected. Initially, the collar on the slide lifts the innermost end of the sealing ring, seen in cross-section, while the still confined gas keeps the outermost end pressed down against the valve. The force thus required to twist and deform the sealing ring increases as ever greater parts of the sealing ring are lifted clear of the valve.
  • the underside of the sealing ring is formed with a plurality of radial grooves which terminate on the outer side of the ring and extend somewhat inwardly below it.
  • the radial grooves reduce the force necessary to lift the sealing ring clear of the valve to an acceptable size, but on the other hand they form pits which can collect dirt and be a hotbed of fermentation and putrefactive processes which are not compatible with the requirements of hygiene that food product containers of this type must satisfy. Furthermore, the grooves reduce the active gasket area of the sealing ring and, when the upper side of the valves is uneven, may cause a leaky connection between the dispenser head and the valve.
  • the upper side of the sealing ring described in the above- mentioned British patent specification is formed with a plurality of small upwardly extending pins which are pressed elastically together against the bottom of the recess when the slide is pulled up to its upper position. According to the patent specification these pins are to serve to press the sealing ring down to engage the upper side of the valve before the slide has reached so far in its downward movement as to open the valve and the gas inlet.
  • the sealing ring remains in the recess in which it must neces ⁇ sarily form a tight fit, and this entails that liquid in- acceptably splashes out through the gap between the dis ⁇ video head and the valve before the slide has been pressed home.
  • a possible remedy to this drawback might consist in increasing the dimensions of the pins and thereby their spring force. However, this would simultane ⁇ ously increase the force necessary to lift the sealing ring clear of the valve for removal.
  • the object of the invention is to provide a coupling ar ⁇ rangement of the type mentioned in the opening paragraph which, upon activation of the dispenser head, remains tight with certainty before the slide has managed to open the valve and the gas inlet, and which can moreover easily be removed without having to apply much force.
  • the slide is formed with a second outwardly di ⁇ rected collar which has a larger diameter than the bore of the sealing ring and is so positioned on the slide in an axial direction that when being moved toward its lower position the slide, by engagement between the collar and the sealing ring, carries along the sealing ring down to engage the valve before the slide opens the valve and the gas inlet.
  • This arrangement effectively prevents uninten- tional liquid splash while the operator presses the hand ⁇ grip of the dispenser head down to open the container.
  • The. slide function of closing and opening the gas inlet and the valve, respectively entails that the slide must have a relatively long travel between its upper and lower positions.
  • the sealing ring on the other hand, only has to be lifted slightly to get clear of the valve for re ⁇ moval.
  • the second outwardly directed collar of the slide will therefore be pulled up and down through the sealing ring during the movements of the slide between its extreme positions, and for the correct function to be achieved in this connection this collar has a slightly larger diameter than the bore of the sealing ring and, in cross-section, has the shape of a triangle whose vertex faces outwardly so that the collar can suitably easily pass through the sealing ring.
  • a particularly advantageous embodiment is obtained when the sealing ring is formed with a plurality of inwardly directed noses and the slide with a third outwardly di ⁇ rected collar which is arranged at a distance below the second collar of the slide corresponding to the height of the noses, and that the diameter of the slide between the two collars has a diameter corresponding to the diametri ⁇ cal distance between the noses.
  • the sealing ring therefore acts as a pump piston in the recess when the handgrip is repeatedly moved up and down, and this function can advantageously be used for cleaning the interior parts of the dispenser head, which may optionally be partly immersed in a suitable cleaning liquid in this operation.
  • a ring-shaped disc may be arranged in the recess of the dis ⁇ medical head above the sealing ring and a breast on the slide which is so axially positioned on the slide that when engaged with the disc the breast causes the disc to compress the sealing ring axially when the slide.is in its lower position.
  • the inner side of the sealing ring may moreover be formed with a lower annular rib between the inner and outer sides of the sealing ring, said rib in cross-section having the shape of a triangle with a down- wardly facing vertex which extends further down than the rest of the underside of the sealing ring in the unloaded state of the sealing ring.
  • this rib In use this rib is in a highly compressed state, and it has been found that the rib is capable of forming an extremely effective seal even in the cases where the upper side of the valve is very uneven or damaged by scratches extending transversely of the rib.
  • the compressed rib initi ⁇ ally contributes to the force which serves to lift the sealing, ring clear of the valve.
  • the rib will be more and more unstable because of its triangular cross-section and at a certain time it can no longer withstand the load from the confined pressure gas. The rib therefore collapses and permits the confined pressure gas to blow past below the rib.
  • a plurality of shoulders may moreover advantageously be provided above the lower rib on the upper side of the sealing ring which rise above the rest of the upper side of the sea-ling ring.
  • said seal ⁇ ing ring may be formed with a lip along the periphery which touches the ring face of the recess, thereby instan ⁇ taneously sealing the space above the sealing ring as soon as the gas inlet is opened.
  • the seal achieved by the lip may be improved additionally by means of a labyrinth seal along the periphery of the sealing ring below the lip, and this labyrinth seal may advantageously consist of a plurality of annular outer ribs, each of which has the shape of half an O-ring in cross-section.
  • fig. 1 is a partially sectional view of a coupling ar ⁇ rangement according to the invention, said arrangement being in a closed position in the left half and in an open position in the right half,
  • fig. 2 shows a sealing ring for the coupling arrangement shown in fig. 1,
  • fig. 3 is a top view of the same.
  • fig. 4 is a bottom view of the same.
  • Fig. 1 shows a coupling arrangment having a dispenser head which is generally designated by the reference nume ⁇ ral 1, and a valve which is generally designated by the reference numeral 2.
  • the valve of which only the upper ⁇ most part is shown, is threadedly secured in a connecting piece 3 which is welded upwardly on a container 4, which is only shown in fraction.
  • the valve is provided with an axially slidable gasket 5 which is affected by an upwardly directed force from a compression spring 6.
  • a down pipe 7 extends- down into the liquid, e.g. beer, which is to be dispensed.
  • the dispenser head 1 comprises a housing 8, a slide 9 slidable up and down in the housing as well as a handgrip 10 which serves to slidably move the slide.
  • the handgrip is pivotally journalled about pivots 11 and can pivot between an upper position shown in dotted line in the figure, and a lower position shown in solid line.
  • the dis ⁇ an head is moreover provided with a connection 12 which serves to connect the dispenser head with a pressure gas source (not shown), e.g. C0 2 in a bottle or a cart- ridge.
  • the slide 9 has an axially extending channel 13 through which the liquid to be dispensed is conveyed out to the location of consumption (not shown).
  • the valve upwardly has a flange 14, and the dispenser head an inwardly directed edge 15 gripping firmly below the flange 14 when the dispenser head is coupled to the valve.
  • the inwardly directed edge 15 only extends semi-circularly along the lower periphery of the dispenser head, which can therefore by moved transversely across the flange of the valve for coupling.
  • the seal between the dispenser head and the valve is provided by means of a sealing ring 16 which is mounted axially slidably in a recess 17 in a housing 8.
  • the valve 2 As shown to the left of fig. 1, the valve 2 is closed when the slide 9 is in its upper position, and as shown to the right of fig. 1, the valve is open when the slide is in its lower position, where it has pressed the gasket 5 down so that the liquid can be conveyed out to the location of consumption via the down pipe 7, a plurality of openings 18 in it and the channel 13 in the slide.
  • the slide has simultaneously opened the gas inlet 12.
  • Figs. 2, 3 and 4 show the sealing ring 16 on an enlarged scale.
  • the sealing ring is made of an elastomeric mate ⁇ rial, which may e.g. be rubber of a suitable hardness.
  • the underside of the sealing ring is formed with a relatively large lower, annular rib 19 having a triangular profile in cross-section.
  • the rib 19 is spaced from the outer periphery of the sealing ring.
  • two smaller annular ribs 20 are provided between the sealing ring and the rib 19, which likewise have a triangular profile in cross-section.
  • a labyrinth seal is provided along the ac ⁇ tual periphery, consisting of three 0-ring halves, and a lip 22 is provided above this labyrinth seal, said lip serving to form a seal against the inner side of the re ⁇ cess 17 as soon as the gas inlet is opened.
  • a plurality of shoulders 23 are provided on the upper side of the sealing ring in an area present above the lower annular rib 19, said shoulders being arranged with mutual spaces 24 and rising above the rest of the upper side of the sealing ring.
  • a plurality of inwardly directed noses 25, which are mutually separated by vertical openings 26, are provided along the inner side of the sealing ring. Further, a ring- shaped plane face 27 is provided downwardly on the sealing ring at the inner side.
  • the slide 9 is downwardly formed with a first outwardly directed collar 28 having an upper face mating with the ring-shaped plane face 27 downwardly on the sealing ring 16.
  • a second outwardly directed collar 29 is arranged at a distance above the first collar 28 corresponding to the height of the sealing ring at the inner side, said second collar 29 in cross-section having a triangular profile with a vertex which has a slightly larger diameter than the bore of the sealing ring.
  • a third out ⁇ wardly directed collar 30 is provided at a distance below the second collar 29 which corresponds to the height of the noses 25.
  • a ring-shaped disc 31 which has a downwardly directed edge 32 of the same diameter as the noses 25 of the seal- ing ring and a plurality of holes 33, is arranged in the recess 17 above the sealing ring 16.
  • the slide is moreover provided with a breast 34 in the form of e.g. a ring.
  • the breast 34 has a larger diameter than the inside diameter of the ring-shaped disc 31.
  • the dis ⁇ taste head is moved transversely over the flange 14 of the valve 2 and is then retained on it by the inwardly directed edge 15 downwardly on the housing 8.
  • the handgrip 10 is pulled up to its upper posi ⁇ tion and the slide 9 is correspondingly present in its upper position, where is has pulled the sealing ring 16 slightly into the recess 17 of the housing with its first collar 28.
  • the dispenser head is moreover connected to a gas source (not shown) and a location of consumption (not shown), respectively.
  • the second collar 29 passes through the opening of the sealing ring 16 because of its triangular shape, and the slide can therefore con ⁇ tinue to the lower position shown to the right in fig. 1 in which the valve 2 and the gas inlet 12 are opened.
  • the breast 34 on the slide has pressed the ring-shaped disc 31 in the recess 17 down against the sealing ring so that the downwardly directed edge 32 of the disc rests on the shoulders 23 of the sealing ring with a predetermined force, which is transferred to a con ⁇ siderable extent via the shoulders to the lower annular rib 19, which is thereby caused to effectively seal even an irregular surface on the flange 14.
  • the lip 22 of the sealing ring simultaneously ensures that the space above the sealing ring is tight from the moment the gas pressure is first admitted.
  • the labyrinth seal which consists of the O-ring halves 21, simultaneously ensures the lasting durability of the seal, because they engage the inner side of the recess and at the same time support the sealing ring against the radially acting pressure from the gas.
  • the coupling arrangement can now be used until the con ⁇ tainer has been emptied or is to be replaced for some other reason.
  • valve and the gas inlet are then closed by pulling the handgrip 10 up to its upper position, whereby the slide 9 simultaneously moves upwardly.
  • the slide engages the ring-shaped plane face 27 downwardly on the sealing ring with its first upwardly directed collar 28, and the sealing ring is therefore affected by an up ⁇ wardly directed force trying to lift the sealing ring clear of the valve 2 against the pressure of the gas which is confined in the cavity above the sealing ring.
  • the sealing ring hereby bends at the innermost end, seen in cross-section, while the outermost end is still pressed down against the valve by the gas pressure. Initially the spring force from the highly compressed large, lower rib 19 acts in the same direction as the lifting force of the slide, which is thereby reduced correspondingly.
  • the bending of the ring has reached the area at the lower rib 19, this is gradually lifted so much that, because of its triangular profile, it no longer has the necessary strength and stability to resist the pressure from the confined pressure gas.
  • the lower rib 19 therefore collapses and permits the gas to escape to the atmosphere.
  • the sealing ring is then completely unloaded and can be lifted freely.
  • the structure of the sealing ring entails that at no time of the complete lifting ope ⁇ ration has it been necessary to use a lifting force which is just as great as the force by which the confined pres ⁇ sure gas affects the sealing ring.
  • a dispenser head mounted on a valve in a pressure container can be removed easily and without any difficulty when the container is e.g. to be exchanged.
  • the reason is that the sealing ring is not fixed against the valve by the pres ⁇ sure of the confined gas above the sealing ring, since this is relieved completely when the handgrip of the dis- an head is pulled up to close the container. This only requires a modest effort from the operating staff. Further, the operating staff and the surroundings will not be splashed with liquid when the container is opened.

Landscapes

  • Devices For Dispensing Beverages (AREA)
  • Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)

Abstract

Dispositif de branchement permettant d'unir une tête de distribution (1) au clapet (2) monté sur une pièce de réunion (3) d'un conteneur (4) à liquide, tel que de la bière mise en pression par un gaz, comme du CO2. L'étanchéité entre les deux éléments (1, 2) est réalisée par une bague d'étanchéité (16) montée coulissante dans le sens axial à l'intérieur d'un évidement (17) dans la tête distributrice. Cette dernière comporte en outre un coulisseau (9) pouvant être déplacé verticalement vers le haut et vers le bas à l'aide d'une poignée (10) pour réaliser respectivement la fermeture et l'ouverture du conteneur et de l'admission de gaz sous pression. Ce coulisseau comporte à sa partie inférieure une première collerette (28) dirigée vers l'extérieur, qui soulève la bague d'étanchéité et la dégage du clapet lorsque le conteneur doit être fermé et la tête distributrice enlevée. Le coulisseau comporte en outre une deuxième collerette (29) dirigée vers l'extérieur, qui a pour fonction de mettre la bague d'étanchéité au contact du clapet avant que le coulisseau n'ouvre le clapet et l'admission de gaz. Pour garantir une étanchéité effective et un démontage aisé, la bague d'étanchéité (16) comporte une nervure annulaire (19) relativement importante, à profil triangulaire, à sa partie inférieure. Ce dispositif de branchement permet de monter aisément et sans difficulté une tête distributrice sur le clapet d'un conteneur à pression renfermant un liquide sous pression sous l'effet d'un gaz et de retirer cette tête tout aussi facilement. Ce dispositif prémunit en outre le personnel chargé de son maniement contre les éclaboussures au moment de l'ouverture du conteneur.
PCT/DK1993/000084 1992-03-04 1993-03-03 Dispositif de branchement permettant d'unir une tete distributrice au clapet d'un conteneur WO1993017954A1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
DE4390855A DE4390855C2 (de) 1992-03-04 1993-03-03 Kupplungsanordnung zur Kupplung eines Ausgabekopfes mit einem Ventil
AU37451/93A AU3745193A (en) 1992-03-04 1993-03-03 A coupling arrangement for coupling a dispenser head to a container valve
EP93906466A EP0628016B1 (fr) 1992-03-04 1993-03-03 Dispositif de branchement permettant d'unir une tete distributrice au clapet d'un conteneur
GB9417838A GB2280176B (en) 1992-03-04 1993-03-03 Dispenser head which is provided with coupling means for coupling to a container valve
DE4390855T DE4390855T1 (de) 1992-03-04 1993-03-03 Kupplungsanordnung zur Kupplung eines Ausgabekopfes mit einem Behälterventil

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DK0291/92 1992-03-04
DK29192A DK169814B1 (da) 1992-03-04 1992-03-04 Koblingsarrangement til at koble et tappehoved sammen med en beholderventil

Publications (1)

Publication Number Publication Date
WO1993017954A1 true WO1993017954A1 (fr) 1993-09-16

Family

ID=8091897

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DK1993/000084 WO1993017954A1 (fr) 1992-03-04 1993-03-03 Dispositif de branchement permettant d'unir une tete distributrice au clapet d'un conteneur

Country Status (6)

Country Link
EP (1) EP0628016B1 (fr)
DE (2) DE4390855T1 (fr)
DK (1) DK169814B1 (fr)
GB (1) GB2280176B (fr)
NL (1) NL194121C (fr)
WO (1) WO1993017954A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1995011191A1 (fr) * 1993-10-22 1995-04-27 Micro Matic A/S Tete de distributeur
WO1999025643A1 (fr) * 1997-11-18 1999-05-27 Skerra Pty. Limited Fut de biere et element rapporte a clapet
WO2005021418A1 (fr) * 2003-09-01 2005-03-10 Spears Limited Ensemble valve pour un baril a biere
WO2008005654A2 (fr) * 2006-07-03 2008-01-10 Nordson Corporation Distributeur et piston pour distribuer un matériau liquide et procédé de fabrication d'un piston
CN105776116A (zh) * 2007-07-10 2016-07-20 欧洲凯格公司 分配头

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9408110D0 (en) * 1994-04-23 1994-06-15 Hughes Jonathan P Barrel adaptor

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DK145414B (da) * 1980-07-15 1982-11-15 Micro Matic As Fadkobling til et fad for vaeske,som staar under gastryk
GB2185469A (en) * 1986-01-21 1987-07-22 Vsh Fabrieken Nv Tap heads
GB2185470A (en) * 1986-01-21 1987-07-22 Vsh Fabrieken Nv Improvements in tap heads
EP0263620A1 (fr) * 1986-10-06 1988-04-13 Royal Packaging Industries Van Leer B.V. Tête de distribution de liquide
EP0294095A1 (fr) * 1987-06-03 1988-12-07 Micro Matic A/S Tête de soutirage

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1530968A (en) * 1976-09-17 1978-11-01 Grundy Ltd Coupling or dispensing heads for pressurised casks and like containers

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DK145414B (da) * 1980-07-15 1982-11-15 Micro Matic As Fadkobling til et fad for vaeske,som staar under gastryk
GB2185469A (en) * 1986-01-21 1987-07-22 Vsh Fabrieken Nv Tap heads
GB2185470A (en) * 1986-01-21 1987-07-22 Vsh Fabrieken Nv Improvements in tap heads
EP0263620A1 (fr) * 1986-10-06 1988-04-13 Royal Packaging Industries Van Leer B.V. Tête de distribution de liquide
EP0294095A1 (fr) * 1987-06-03 1988-12-07 Micro Matic A/S Tête de soutirage

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1995011191A1 (fr) * 1993-10-22 1995-04-27 Micro Matic A/S Tete de distributeur
US5617977A (en) * 1993-10-22 1997-04-08 Micro Matic A/S Dispenser head for dispensing a liquid which is pressurized by a gas in a container
AU685520B2 (en) * 1993-10-22 1998-01-22 Micro Matic A/S A dispenser head
WO1999025643A1 (fr) * 1997-11-18 1999-05-27 Skerra Pty. Limited Fut de biere et element rapporte a clapet
WO2005021418A1 (fr) * 2003-09-01 2005-03-10 Spears Limited Ensemble valve pour un baril a biere
WO2008005654A2 (fr) * 2006-07-03 2008-01-10 Nordson Corporation Distributeur et piston pour distribuer un matériau liquide et procédé de fabrication d'un piston
WO2008005654A3 (fr) * 2006-07-03 2008-02-28 Nordson Corp Distributeur et piston pour distribuer un matériau liquide et procédé de fabrication d'un piston
US7891528B2 (en) 2006-07-03 2011-02-22 Nordson Corporation Dispenser and piston for dispensing a liquid material
US8337737B2 (en) 2006-07-03 2012-12-25 Nordson Corporation Method of making a piston for a dispenser
CN105776116A (zh) * 2007-07-10 2016-07-20 欧洲凯格公司 分配头
CN105776116B (zh) * 2007-07-10 2019-03-15 米克罗曼蒂科公司 分配头

Also Published As

Publication number Publication date
NL194121B (nl) 2001-03-01
DE4390855T1 (de) 1995-04-27
NL9320028A (nl) 1995-03-01
DK169814B1 (da) 1995-03-06
EP0628016B1 (fr) 1996-06-12
DK29192A (da) 1993-09-05
DE4390855C2 (de) 2001-11-29
EP0628016A1 (fr) 1994-12-14
GB9417838D0 (en) 1994-10-26
DK29192D0 (da) 1992-03-04
GB2280176A (en) 1995-01-25
GB2280176B (en) 1996-06-05
NL194121C (nl) 2001-07-03

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