EP0450377B1 - Appareil pour le remplissage de récipients avec un liquide - Google Patents

Appareil pour le remplissage de récipients avec un liquide Download PDF

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Publication number
EP0450377B1
EP0450377B1 EP91104094A EP91104094A EP0450377B1 EP 0450377 B1 EP0450377 B1 EP 0450377B1 EP 91104094 A EP91104094 A EP 91104094A EP 91104094 A EP91104094 A EP 91104094A EP 0450377 B1 EP0450377 B1 EP 0450377B1
Authority
EP
European Patent Office
Prior art keywords
liquid
valve body
valve
switching
filling
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.)
Expired - Lifetime
Application number
EP91104094A
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German (de)
English (en)
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EP0450377A1 (fr
Inventor
Jacek Walusiak
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.)
Alfill Getraenketechnik GmbH
Original Assignee
Alfill Getraenketechnik GmbH
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.)
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Publication date
Application filed by Alfill Getraenketechnik GmbH filed Critical Alfill Getraenketechnik GmbH
Publication of EP0450377A1 publication Critical patent/EP0450377A1/fr
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Anticipated expiration legal-status Critical
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B67—OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
    • B67C—CLEANING, FILLING WITH LIQUIDS OR SEMILIQUIDS, OR EMPTYING, OF BOTTLES, JARS, CANS, CASKS, BARRELS, OR SIMILAR CONTAINERS, NOT OTHERWISE PROVIDED FOR; FUNNELS
    • B67C3/00—Bottling liquids or semiliquids; Filling jars or cans with liquids or semiliquids using bottling or like apparatus; Filling casks or barrels with liquids or semiliquids
    • B67C3/02—Bottling liquids or semiliquids; Filling jars or cans with liquids or semiliquids using bottling or like apparatus
    • B67C3/22—Details
    • B67C3/28—Flow-control devices, e.g. using valves

Definitions

  • the invention relates to a filling device for filling containers, in particular bottles or cans, with a predetermined amount of a liquid, in particular a carbonated liquid under pressure, according to the preamble of claim 1.
  • Filling devices for filling liquids into containers such as cans, bottles or the like usually have a storage container in which the liquid to be filled is kept ready and which has a gas space above the liquid.
  • a control device ensures that the liquid level in the storage container is kept as constant as possible in order to create defined and reproducible conditions for the filling process.
  • the storage container is normally designed as a rotating vessel, for example as a ring vessel, with a central liquid supply.
  • the storage container is normally designed as a rotating vessel, for example as a ring vessel, with a central liquid supply.
  • centering and sealing means for andocculating successive containers to be filled, which contain the necessary liquid passages and valves as well as air and gas lines with the associated actuators.
  • These devices are preferably used for filling beverages, specifically both for still beverages, such as still water, juices, milk or the like, and particularly for carbonated beverages which are filled under counterpressure.
  • the necessary equipment such as tension and return gas lines are integrated in the filling head.
  • a known filling head for a filling device is described for example in DE-OS 30 25 786.
  • a filling head that offers the possibility of volumetric dosing of the liquid to be filled is described in DE-OS 22 57 449.
  • the liquid passage of each metering container can be closed with a liquid valve which can be actuated through the storage container.
  • the outlet of each metering container has centering and sealing means for docking containers to be filled and can be closed by means of an outlet valve which can also be actuated through the storage container.
  • the valves can be operated independently of one another. Since the actuation of the valves is cam-controlled, the speed at which the valves open and close depends on the circulating speed of the storage container.
  • this filling device and the associated valve arrangement are relatively complex and require extensive installations and conversions on the storage container.
  • the dosing container is filled from above, the gas (air) from the dosing container having to rise in bubbles through the liquid in the storage container.
  • This device is therefore not suitable for measuring and filling carbonated liquids under pressure.
  • a container filling machine of the type specified at the outset which is known from US Pat. No. 3,459,340, is also unsuitable for measuring and filling carbonated liquids under pressure.
  • this machine On its circumference, this machine has filling elements with can containers, which can be connected alternately for filling with the storage container and for emptying with the container to be filled, in each case by means of a double-seat valve.
  • the double-seat valve is operated by cam control so that the speed of opening and closing of the liquid also depends on the speed of rotation of the storage boiler.
  • the valve is switched over, undetermined quantities of liquid flow through the passages and outlets and falsify the dosage in an undefined manner.
  • the can containers on this machine are attached to the outer circumference of the storage kettle and thus cause a not inconsiderable increase in its size and thus the space required for installation.
  • the invention is based on the object of specifying a further filling device of the type described at the outset, which works with higher and constant metering accuracy even at changing speeds.
  • Claim 2 contains features of a preferred embodiment and arrangement of the filling elements on the storage container, which makes it possible to fill the dosing chamber from below, which prevents foaming in carbonated liquids.
  • the mutual actuation of the passage valve and the outlet valve with the common actuating device is also possible here.
  • this structure requires relatively little space because the filling elements are largely within the circumferential profile of the storage tank.
  • Claims 3 to 4 contain further features of the actuating device for switching the passage and exhaust valve, which are of independent inventive importance.
  • Claim 5 relates to the actuation of the actuating device during the circulation of the storage container.
  • Claims 6 and 7 contain features of the liquid passage and the liquid outlet, with which it is ensured that sliding seals in the area of the passage and outlet valve are not required and that the liquid in the metering chamber can nevertheless be measured with a sufficiently high level of accuracy. These features also have independent inventive significance.
  • claims 8 and 9 relate to an embodiment of the valve which, on the one hand, permits the flow through both valves, that is to say the passage valve and the outlet valve, at the same time in predetermined phases of switching, but on the other hand limits the flow rate through the valves.
  • the invention provides in a very advantageous manner a structurally and functionally very simple and at the same time very powerful filling device for filling liquids into bottles, cans and the like.
  • the device is especially designed for filling pressurized, carbonated liquids.
  • the filling element itself and all the switching and actuating elements required for the dosing and filling processes are below or outside of the storage container, so that apart from the attachment of the liquid passages, no conversions and installations for the filling elements on the storage container are required.
  • the operation of the passage and the outlet valve is very simplified and optimally coordinated.
  • the valves have no sliding seals.
  • the throttle sections provided instead according to the invention along the switching path of the valve body limit the flow rates during the switching process and reduce the metering error to a minimum.
  • the switching speed of the double-seat valve is independent of the rotating speed of the storage container, which also limits the flow rate during the switching process and makes it a defined and therefore calculable quantity. Filling with constant high dosing accuracy is guaranteed at any working speed.
  • the invention offers the advantage of a filling device of simple construction, reliable functioning and high dosing accuracy with high work productivity.
  • FIG. 1 an embodiment of a filling device according to the invention is shown schematically in a cross section.
  • 1 designates a storage tank designed as an annular vessel, which contains a liquid 2 to be filled and a gas space 3 with a gas under a predetermined pressure, for example CO2.
  • Filling elements 4 with centering and sealing means 6 for docking successive containers 7 to be filled are attached to the underside of the circumference of the storage container 1 at regular angular intervals.
  • the storage container 1 is connected in a known manner via feed lines 8 for the liquid to be filled and gas lines 9 to a central supply unit, not shown in the drawing. With known means, not shown in the drawing, the liquid level in the reservoir is kept at a predetermined level.
  • the pressure in the gas space 3 is regulated as constant as possible in order to create as constant conditions as possible for the filling of the liquid.
  • the storage container 1 runs around a vertical axis (not shown), successive containers 7 to be filled being docked, filled and released again one after the other onto the filling members 4. This process is known and need not be described here.
  • openings 12 are provided in the circumferential direction next to one another, to which downwardly extending container extensions 13 are attached.
  • the container lugs 13 are preferably designed as cylindrical tube pieces which are flanged around the bottom openings 12 on the storage container.
  • Each container extension 13 protrudes from above into a metering chamber 14 and has a liquid passage 16 at its lower end from the storage container 1 to the metering chamber 14.
  • the metering chamber preferably forms a structural unit with the container attachment, the attachment of which the reservoir does not require any further modifications or additions to the reservoir.
  • the dosing chamber is provided at its lower end with a liquid outlet 17, to which the centering and sealing means 6 known per se and therefore not shown in more detail are assigned for docking the containers 7 to be filled.
  • the dosing chamber has a dosing space 23 for receiving a predetermined amount of the liquid to be filled and above it a gas space 24 which limits the dosing space 23 in the dosing chamber 14 upwards.
  • a return gas line 26 connects the metering chamber 23 of the metering chamber to the gas chamber 3 of the storage container. The return gas line 26 opens below the gas space 24 in the dosing chamber 14.
  • the gas space 24 is closed off from the outside and thus contains a gas buffer which limits the dosing volume of the dosing chamber upwards.
  • the metering volume of the metering chamber 23 of the metering chamber 14 can be changed with a displacer body 27 that is vertically adjustable from the outside.
  • a displacer body 27 that is vertically adjustable from the outside.
  • an actuating rod 28 is provided which extends outside the storage container 1 and consequently does not require any conversions or installations on the storage container.
  • the liquid passage 16 and the liquid outlet 17 are arranged opposite one another so that they can be closed alternately by means of a double-seat valve 18 with a common valve body 19.
  • a valve seat 21 on the liquid passage 16 defines a first closed position of the valve body 19, in which the liquid passage from the reservoir 1 to the metering chamber 14 is blocked and the liquid outlet 17 of the metering chamber is open.
  • the second closed position of the valve body 19 is determined by a valve seat 22 of the liquid outlet 17 of the metering chamber 14. In this closed position of the valve body 19, the liquid outlet 17 is blocked, while the liquid passage 16 is open.
  • the valve body 19 is fixedly attached to a return gas pipe 29, which connects the inside of the container 7 to be filled with the gas space 3 of the storage container and can be closed at its upper end with a gas valve 31.
  • the gas valve 31 can be opened and closed via a sliding sleeve 32 concentrically surrounding the return gas tube 29 by means of an actuating member 33 with a cam-controlled eccentric 34.
  • a force element in the form of a spring 36 which is fastened on the one hand inside the container neck 13 and on the other hand outside on the return gas pipe 29, acts on the valve body 19 via the return gas pipe 29 so that it is brought into its upper closed position on the valve seat 21, in which it Liquid passage from the reservoir to the metering chamber is blocked.
  • the valve body 19 is against the force of the spring 36 by the pressure of the liquid in the metering chamber and the reservoir in it lower closed position held on the valve seat 22, in which it blocks the liquid outlet.
  • the force of the spring 36 is therefore less than the force with which the valve body 19 is pressed by the liquid against the valve seat 22.
  • a switching element 37 is provided in order to move the valve body 19 against the pressure of the spring 36, which holds it in the upper closed position on the valve seat 21, into its lower closed position on the valve seat 22, a switching element 37 is provided.
  • This switching element has a bearing housing 38 mounted on the outside of the container shoulder 13 for a shaft 39 on which on the one hand an eccentric tilting element 41 and on the other hand an eccentric 42 are fastened.
  • the eccentric 42 acts on a driver 43 which is attached to the return gas pipe 29.
  • FIGS. 3 and 4c show the return gas pipe 29 with a stop 44 on which the compression spring 36 acts with an upward force.
  • the tilting element 41 is designed as a segment of a circle that can be pivoted about the axis 39 and can assume two end positions defined by stops, not shown.
  • a second force element in the form of a tension spring 46 holds the tilting element 41 in one of the two end positions.
  • the spring 46 is fastened on the one hand to a bolt 49 attached to the tilting element 41 and on the other hand to the housing 38 via a holder 51.
  • the base points of the spring 46 are selected such that the tilting element 41 can be pivoted against the force of the spring from a first stable switching position via an unstable equilibrium position to a second stable switching position. This arrangement thus represents a mechanical FLIP-FLOP element with two stable switching positions.
  • FIG. 4a shows the tilting element in a first stable switching position. It is moved during the rotation of the storage container 1 in the direction of arrow 47 and comes into contact in a predetermined path section with a stationary control element 48 in the form of a curve piece, which moves the tilting element 41 into the unstable equilibrium position shown in FIG 4c shown second stable switching position pivots. From this second stable switching position, the tilting element 41 is pivoted back into its first switching position in a second path section by a second stationary control member 52. The speed of the pivoting movement of the tilting element 41 from its first switching position in the unstable equilibrium position shown in FIG. 4b is dependent on the rotation speed of the storage container 1 because of the interaction with the curve piece 48.
  • valve body 19 As long as no container 7 is docked to the centering and sealing means 6 of the liquid outlet 17, the valve body 19 is in its lower closed position on the valve seat 22 in order to block the liquid outlet. Since there is atmospheric pressure on the outside of the liquid outlet, the valve body is held in this closed position against the force of the spring 36 by the increased pressure prevailing inside the storage container and the metering chamber. The force of this spring is therefore less than the force with which the liquid presses the valve body 19 against the valve seat 22 of the liquid outlet 17.
  • a container 7 to be filled is docked onto the centering and sealing means 6 of the filling element 4.
  • the gas valve 31 is now opened in order to apply the pressure of the gas space 3 to the container, that is to say to prestress it.
  • the storage container 1 with the filling member 4 and the container 7 to be filled continues to rotate in the direction of the arrow 47 in FIG. 4.
  • the tilting element 41 becomes (see FIGS. 4a to 4c) of the switching element 37 by means of the control cam 48 from its upper first switching position, in which the upper closed position of the valve body 19 on the valve seat 21 is released, via the unstable equilibrium position (FIG. 4b) to the second stable switching position (4c), in which the eccentric 42 presses the return gas pipe 29 with the valve body 19 in its lower closed position on the valve seat 22 and thus blocks the liquid outlet 17.
  • the tilting element 41 remains in this second switching position until the pressure of the liquid flowing from the storage container into the metering chamber 14 is sufficient to hold the valve body 19 against the force of the spring 36 in its lower closed position on the valve seat 22. Only then is the tilting element 41 moved from the second switching position shown in FIG. 4c to its stable starting position by means of a further stationary curve piece 52 switched back, wherein the eccentric 42 releases the valve body 19 for the next filling process.
  • the return gas valve 31 of the return gas pipe 29 is closed and a relief valve 53 is opened. Now the filled container 7 can be removed. The arrangement is ready for a new filling process.
  • the double seat valve 18 is designed so that the movement of the valve body 19 does not require sliding seals.
  • the valve body 19 has sealing surfaces 69 and 71 which are inclined conically to the valve axis and cooperate with corresponding sealing surfaces of the valve seats 21 and 22.
  • throttle sections 54 and 56 can be assigned to the liquid passage 16 and the liquid outlet 17, which only open a narrow liquid passage during the movement of the valve body 19.
  • the throttle section 54 consists of an annular gap 57, which is delimited radially outwards by an axial extension 58 of the container extension 13 and radially inwards by the outer circumferential surface of the valve body 19.
  • the annular gap 57 can be selected to be as narrow as desired in order to limit the liquid flow when the valve body 19 is switched over to a value which is as small as possible and which is not significant as a metering error.
  • an annular gap is likewise formed by the outer peripheral surface of the valve body and a cylindrical housing section 59 of the metering chamber.
  • FIG. 2 shows another embodiment of the filling device according to the invention, in which, however, essential parts correspond to the embodiment according to FIG. 1. The same parts are therefore provided with the same reference numerals in FIG. 2 as in FIG. 1.
  • the return gas line does not run through the valve body 19.
  • the valve body 19 is attached to an actuating rod 61, via which on the one hand again the spring 36 and on the other hand the switching element 37 act on the valve body 19.
  • the function is the same as described in connection with FIG. 1.
  • the return gas line connecting the interior of the container 7 to be filled with the gas space of the storage container 1 now runs through a pipe section 62 which is fixedly connected to the filling element, through a line section 63 which is fixedly arranged in the dosing chamber and which projects through the container opening 12 into the gas space 3 of the storage container Another pipe section 64.
  • the return gas line can be interrupted in order to prevent a pressure loss in the gas space 3 of the storage container 1 as long as no container 7 is docked to the filling element.
  • the filling element 4 is designed such that it can be attached to the bottom opening 12 of the storage container 1 without further modifications or installations to the storage container being necessary.

Landscapes

  • Filling Of Jars Or Cans And Processes For Cleaning And Sealing Jars (AREA)
  • Basic Packing Technique (AREA)

Claims (9)

  1. Dispositif de remplissage pour remplir des récipients, notamment des bouteilles ou des boîtes, avec une quantité prédéterminée d'un liquide, notamment un liquide sous pression renfermant du gaz carbonique, comportant un récipient de réserve (1), qui se présente en tant que bassin circulant, et qui maintient à disposition le liquide à soutirer, ainsi que des organes de remplissage (4), qui sont disposés sur la périphérie du bassin selon un espacement angulaire régulier, sont destinés à remplir continuellement des récipients (7) successifs, et comportent chacun une chambre de dosage (14) reliée au réservoir de réserve par l'intermédiaire d'un passage de liquide pouvant être obturé par une soupape de passage (16), et destinée à la mesure volumétrique d'une quantité prédéterminée du liquide, ainsi qu'une sortie de liquide (17) de la chambre de dosage, pouvant être obturée par une soupape de sortie et pourvue de moyens de centrage et d'étanchéité pour l'amarrage de récipients (7) à remplir, la soupape de passage (16) et la soupape de sortie (17) étant réalisées sous forme de soupape à siège double (18) comportant un corps de soupape commun (19), qui dans une première position de fermeture obture le passage de liquide (16) et ouvre la sortie de liquide (17), et dans une seconde position de fermeture, obture la sortie de liquide (17) et ouvre le passage de liquide (16), caractérisé en ce qu'il est prévu un dispositif de positionnement (29, 36; 37) pour commuter le corps de soupape (19) de la soupape à siège double (18), d'une position de fermeture dans l'autre et inversement, et qui comporte un élément de force (36) agissant sur le corps de soupape (19) dans la direction d'une position de fermeture, ainsi qu'un organe de commutation (37), qui est réalisé de manière à déplacer le corps d'obturation de soupape, avec une vitesse indépendante de la vitesse de révolution du récipient de réserve (1) en rotation, à l'encontre de l'action de l'élément de force, d'une position de fermeture dans l'autre, et inversement.
  2. Dispositif selon la revendication 1, caractérisé en ce que les organes de remplissage (4) sont montés sur le côté inférieur du récipient de réserve (1), une embase de récipient (13) du récipient de réserve (1), qui comporte un passage de liquide (16) à son extrémité inférieure, s'engageant par le haut, pour chacun des organes de remplissage, dans la chambre de dosage (14), en ce qu'en face du passage de liquide, dans le fond de la chambre de dosage (14), est disposée la sortie de liquide (17), et en ce que le passage de liquide (16) et la sortie de liquide (17) sont à ouvrir et à fermer alternativement au moyen de la soupape à siège double (18) comportant un corps de soupape commun (19).
  3. Dispositif selon l'une des revendications 1 à 2, caractérisé en ce que l'organe de commutation (37) pour commuter le corps de soupape (19) d'une position de fermeture dans l'autre et inversement comporte un élément de type bascule bistable mécanique (41, 46).
  4. Dispositif selon l'une des revendications 1 à 3, caractérisé en ce que l'organe de commutation (37) comporte un élément basculant (41) pouvant pivoter autour d'un axe de rotation (39) et présentant deux positions de commutation stables, et en ce que l'élément basculant, dans une position de commutation, libère la position de fermeture du corps de soupape (19), définie par le premier élément de force (36), et lors de son passage à la seconde position de commutation, au moyen d'un second élément de force (46), déplace le corps d'obturation de soupape (19) dans sa seconde position de fermeture, à l'encontre de l'action du premier élément de force (36).
  5. Dispositif selon l'une des revendications 1 à 4, caractérisé en ce qu'au récipient de réserve (1) en rotation, sont associés des organes de commande (48, 52) stationnaires, pour actionner les organes de commutation (37).
  6. Dispositif selon l'une des revendications 1 à 5, caractérisé en ce qu'au passage de liquide (16) et/ou à la sortie de liquide (17) est disposé, en direction de la chambre de dosage (14), au moins un parcours d'étranglement de débit (54, 56) limitant de manière définie l'écoulement du liquide pendant le mouvement de commutation du corps de soupape (19).
  7. Dispositif selon la revendication 6, caractérisé en ce que le parcours d'étranglement (54, 56) est formé par un canal annulaire (57), qui est délimité d'une part, par une surface périphérique du corps de soupape (19), et d'autre part, par un tronçon de paroi (58, 59) entourant le corps d'obturation de soupape et prolongeant le canal d'écoulement à partir du siège de soupape (21, 22) en direction de l'intérieur de la chambre de dosage.
  8. Dispositif selon la revendication 6 ou 7, caractérisé en ce que le corps de soupape (19) présente un tronçon périphérique cylindrique (68) dont la longueur axiale est dimensionnée de manière telle, qu'à la moitié de la course de commutation, il limite les deux parcours d'étranglement (54, 56).
  9. Dispositif selon l'une des revendications 1 à 8, caractérisé en ce que le corps de soupape (19) comporte deux surfaces d'étanchéité (69, 71) orientées de manière opposée, transversalement et concentriquement à son axe, qui coopèrent avec les surfaces d'étanchéité correspondantes des sièges de soupape (21, 22), et en ce que lors du mouvement du corps de soupape (19), d'une position de fermeture à l'autre, aussi bien l'ouverture de passage (16) que l'ouverture de sortie (17) sont ouvertes.
EP91104094A 1990-03-31 1991-03-16 Appareil pour le remplissage de récipients avec un liquide Expired - Lifetime EP0450377B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4010413 1990-03-31
DE4010413A DE4010413A1 (de) 1990-03-31 1990-03-31 Vorrichtung zum fuellen von behaeltern mit einer fluessigkeit

Publications (2)

Publication Number Publication Date
EP0450377A1 EP0450377A1 (fr) 1991-10-09
EP0450377B1 true EP0450377B1 (fr) 1994-07-20

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EP91104094A Expired - Lifetime EP0450377B1 (fr) 1990-03-31 1991-03-16 Appareil pour le remplissage de récipients avec un liquide

Country Status (6)

Country Link
US (1) US5150743A (fr)
EP (1) EP0450377B1 (fr)
JP (1) JPH04242591A (fr)
CA (1) CA2039476A1 (fr)
DE (2) DE4010413A1 (fr)
ES (1) ES2058961T3 (fr)

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DE2257449A1 (de) * 1972-11-23 1974-05-30 Franz Crombach Vorrichtung zum abfuellen von fluessigkeiten
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DE3025786A1 (de) * 1980-07-08 1982-02-04 Enzinger-Union-Werke Ag, 6800 Mannheim Gegendruck-fuellmaschine fuer kohlensaeurehaltige getraenke
GB2081677B (en) * 1980-08-12 1984-09-26 Coetzee John Clement Dispensing and metering devices for liquids
DE3245943C2 (de) * 1982-12-11 1986-03-20 Bremerland Molkerei eG, 2800 Bremen Auslaßventil zur schaumarmen Abgabe loser Frischmilch in abgemessenen Mengen an den Verbraucher
IT1200221B (it) * 1986-10-03 1989-01-05 Simonazzi Spa A & L Equipaggiamento per la predeterminazione, la regolazione simultanea e la taratura micrometrica individuale di esatte quantita' di liquido per erogare in processi di riempimento a gravita'

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ES2058961T3 (es) 1994-11-01
US5150743A (en) 1992-09-29
DE59102213D1 (de) 1994-08-25
EP0450377A1 (fr) 1991-10-09
JPH04242591A (ja) 1992-08-31
CA2039476A1 (fr) 1991-10-01
DE4010413A1 (de) 1991-10-02

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