EP2528851B1 - Dosiervorrichtung und dosierverfahren für flüssigkeiten - Google Patents

Dosiervorrichtung und dosierverfahren für flüssigkeiten Download PDF

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Publication number
EP2528851B1
EP2528851B1 EP11703626.9A EP11703626A EP2528851B1 EP 2528851 B1 EP2528851 B1 EP 2528851B1 EP 11703626 A EP11703626 A EP 11703626A EP 2528851 B1 EP2528851 B1 EP 2528851B1
Authority
EP
European Patent Office
Prior art keywords
liquid
closure element
open position
flow control
control device
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.)
Active
Application number
EP11703626.9A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2528851A1 (de
Inventor
Dirk Auer
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.)
Elopak AS
Original Assignee
Elopak AS
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 Elopak AS filed Critical Elopak AS
Publication of EP2528851A1 publication Critical patent/EP2528851A1/de
Application granted granted Critical
Publication of EP2528851B1 publication Critical patent/EP2528851B1/de
Active 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
    • 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
    • B67C3/286—Flow-control devices, e.g. using valves related to flow rate control, i.e. controlling slow and fast filling phases
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B3/00—Packaging plastic material, semiliquids, liquids or mixed solids and liquids, in individual containers or receptacles, e.g. bags, sacks, boxes, cartons, cans, or jars
    • B65B3/22—Defoaming liquids in connection with filling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B39/00—Nozzles, funnels or guides for introducing articles or materials into containers or wrappers
    • B65B39/001—Nozzles, funnels or guides for introducing articles or materials into containers or wrappers with flow cut-off means, e.g. valves
    • B65B39/004—Nozzles, funnels or guides for introducing articles or materials into containers or wrappers with flow cut-off means, e.g. valves moving linearly
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B39/00—Nozzles, funnels or guides for introducing articles or materials into containers or wrappers
    • B65B2039/009—Multiple outlets
    • 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
    • B67C3/26—Filling-heads; Means for engaging filling-heads with bottle necks
    • B67C2003/2671—Means for preventing foaming of the liquid
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/8593—Systems
    • Y10T137/87917—Flow path with serial valves and/or closures
    • Y10T137/88038—One valve head carries other valve head

Definitions

  • the invention relates to a liquid flow control device, in particular a metering device, with an inlet for a liquid to be dispensed, in particular as a dose, comprising a valve seat, a valve seat cooperating with the closure member and an outlet for the liquid, according to the preamble of claim 1 and as shown of the DE 22 46 176 A1 known. Moreover, the invention relates to a method, in particular dosing, for dispensing the liquid.
  • Such metering devices and metering methods are used, for example, for the rapid filling of containers, in particular packaging made of composite material (cardboard and PE coating), with a liquid (milk and juices).
  • a liquid milk and juices.
  • care must be taken that as little foam as possible is formed. This is important because, after filling, the composite packages are folded at their upper end and sealed by welding. If foam has formed, the inner surfaces of the upper edge of the package, which later form the weld, are wetted. This can lead to leaks when welding the edge of the package, because the wetted areas prevent a proper connection of the PE coating.
  • tube outlets which produce as laminar a flow as possible in the filling jet.
  • the outlets include several thin tubes through which the liquid is passed into the pack.
  • a valve body Above the outlet, a valve body is arranged, which can interrupt or release the supply of liquid from a storage tank and thus the filling jet.
  • the individual rays were still too restless due to the friction of the liquid on the inner walls of the tubes.
  • a further development is that a cylindrical body with fine axially parallel bores is arranged at the outlet of a generic metering device. In the constricted space of the bores hardly turbulence forms, so that the liquid can flow as calm as possible.
  • a metering device with such a cylindrical body for example, in the EP 0754 144 B1 shown.
  • foaming with the known measures can often not be sufficiently prevented when dosing liquids in packs.
  • the EP 1588948 A2 discloses, to prevent foaming in a liquid to be filled, a liquid filling nozzle having an inlet for a liquid comprising a valve seat and a conical closure member cooperating with the valve seat and an outlet for the liquid.
  • the closure element can be brought into a first and a second open position, wherein the flow cross-sectional area between the valve seat and the closure element and the discharge angle of the liquid with respect to the container to be filled in the two open positions are different.
  • the GB 2308174 A discloses a liquid dispensing valve for quantitatively accurate dispensing of liquids into containers.
  • a flocculation piston In a cylindrical housing with an inlet for the liquid, a flocculation piston, a dropping piston and a dripping piston are arranged concentrically from the outside to the inside, which seal an outlet opening of the liquid discharge valve.
  • the inner drip piston is connected via a piston rod with a compressed air cylinder as a drive.
  • a first spring is arranged between the drip piston and the droplet piston arranged concentrically therewith.
  • a second spring is arranged.
  • the flooding piston is supported by a third spring against the housing of the liquid discharge valve.
  • the pistons are in the range the outlet opening coincident inclined wall sections.
  • the pistons coupled to one another via the springs can be opened and closed depending on the stroke of the piston rod.
  • the outer flooding flask is first opened completely together with the dropping flasks and dripping flasks arranged therein, so that the largest part of the liquid is filled via the annular gap between the outer flooding piston and the outlet opening serving as valve seat (about 95%).
  • the piston rod is lifted to the extent that either only the central drip piston or the dripping flask and the trickle piston surrounding it are raised, so that the amount of residual liquid drips or drips into the container after closing the liquid discharge valve.
  • the DE 22 09 772 A discloses a liquid flow control device having an inlet for a liquid, such as paint.
  • the liquid flow control device comprises a closure piece movably arranged in a filling head with a valve tappet which can be brought into abutment with a conical peripheral surface at the outlet connection of the filling head.
  • a valve stem Inside the closure piece there is a valve stem, which can be brought into contact with the valve seat of a central outlet opening at the bottom of the closure piece.
  • the valve stem is reciprocated in the closure piece by means of a spring-loaded from above and temporarily acted upon by pressure medium piston plate back and forth. The closure piece initially releases the outlet of the discharge nozzle to a maximum.
  • the valve tappet is ready lowered, that the closure piece is located with its peripheral surface at a small distance from the valve seat of the outlet, so that the liquid to be filled can only leak through an annular gap between the closure piece and the valve seat. Then the closure piece is pressed firmly onto the valve seat. At the same time, however, the valve stem is still held against the action of the spring in its open position by means of compressed air. The liquid to be filled can now only flow in a small amount through the central outlet opening into the vessel to be filled. As soon as the correct weight is reached in the vessel, the valve stem is abruptly moved downwards in the direction of the valve seat by means of the compression spring, whereby the liquid supply is completely interrupted.
  • the DE 22 46 176 A1 discloses a liquid over-leveling valve which can be brought into a first, partially open and a second, fully open position.
  • the filling valve for the MatterLiteab colllung of liquids for this purpose comprises a in a main valve body to the valve center concentrically arranged towards adjustable fine-flow valve, by means of which a Feinlaufventilraum with a supply chamber connecting openings are partially or completely coverable.
  • the fine-flow valve is always opened first with the aid of a fine-flow valve linkage. The release of the cross sections of the openings does not produce a sharp jet of liquid when the fine-flow valve is fully open.
  • the fine flow valve jet exits softly and directionally from the central outlet of the scroll valve space in the main valve body.
  • the invention is based on the object to provide a liquid flow control device, in particular metering device and a liquid flow control method, in particular dosing, which effectively reduces the foaming during dispensing, in particular dosing of liquids in packages. After completion of the dispensing, a dripping of the liquid should be prevented by simple means in the liquid flow control device.
  • the solution is based u. a. on the knowledge that a restless filling jet and, consequently, a foaming is caused by the dosage itself.
  • a restless filling jet In order to always ensure the same capacity, the opening and closing of the valve takes place abruptly in the prior art. The sudden release or tearing of the filling jet leads to a troubled filling jet.
  • the object is achieved by a liquid flow control method, in particular dosing with the features of claim 5.
  • the closure element can first be brought into a first and then into a second open position with different sized flow cross-sectional area, first a small amount of the liquid flows into the container and covers its bottom. Only when the container bottom is covered with the first amount of liquid flows in the second open position of the closure element of the full filling jet of liquid into the container.
  • the staggered inlet of the liquid reduces the formation of spatter during the discharge of the liquid and thus the foaming.
  • the closure element with a first and second open position has a first and second, independently movable part, wherein in the direction of flow of the liquid through the metering device, the first part is surrounded by the second part and the parts are arranged such that the opening of the first part the closure element in the first open position and the opening of the second part brings the closure element in the second open position.
  • jet stabilization is according to the invention at the outlet of the metering a known per se, for example from the EP 0278560 A1 known cylindrical outlet arranged with a plurality of axially arranged side by side passages.
  • the closure element facing, preferably flat front side of the outlet at the same time forms at least a part of the valve seat, wherein the first and second part of the closure element each sealingly rest on a plurality of orifices of the passages in the outlet.
  • the two-stage opening or closing of the closure element wherein initially the first part in the center of the outlet releases several passages and then the second part releases several openings concentric to the centrally arranged openings of the outlet causes the particularly low-foam and spatter-free dosing of the liquid.
  • either the first or the second part is sealingly engageable.
  • the avoidance of foaming is achieved by the lowest possible flow velocity of the liquid at the outlet of the outlet in conjunction with a splash-free starting and stopping the filling.
  • the invention makes use of the flow behavior of the liquid in the passages of the outlet for preventing foam:
  • the mean velocity results from dividing the volume flow of the liquid by the cross-sectional area of the pipe.
  • a given volume flow of the liquid can be carried out at the same average speed either by a single large-sized tube, or at the same cross-sectional area through several small-sized tubes.
  • a smaller Reynolds number results for the individual tubes according to the aforementioned formula than when using a single large-dimensioned tube.
  • a laminar flow profile is aimed at the exit of the passages of the outlet.
  • the jet begins very soft in the characteristic of a laminar flow parabolic shape, which has a soft impact on the bottom surface result.
  • not all passages of the outlet are opened at the same time in the starting phase, but only the central passages on the mouths of the first part of the closure element can be brought into abutment. Subsequently, the passages surrounding the central passages, on the mouths of which the second part of the closure element can be brought into abutment, are released.
  • the flow cross sections of the passages in the outlet are dimensioned so that emptying of the individual passages after the sealing placement of the parts of the closure element on the orifices caused by the capillary action of the liquid is avoided. In the start phase of the filling process, this is another one softer flow reached.
  • the capillary effect is first canceled.
  • the residual fluid in the passages begins to empty only accelerated by gravity.
  • the liquid above the closure element increasingly flows over the now released passages. If the passages are closed again by the parts of the closure element that can be brought to bear on their mouths, the supply of liquid to the passages is interrupted.
  • the outlet is preferably detachably fastened to the outlet of the metering device.
  • a first surface of the first part and a second surface of the second part of the closure element are opposite each other and the surfaces are arranged in such a way that when opening the first part, a small annular gap between the first and second part is formed.
  • the flow cross-sectional area, which is released by the relatively narrow annular gap, is significantly smaller than the Flow cross-sectional area between the valve seat and the closure element in the second open position.
  • a gradual swelling of the filling jet between the first and second open position can be achieved in that the distance between the first surface of the first part and the second surface of the second part decreases in the direction of flow of the liquid through the device such that during the opening of the first Part of the released through the annular gap flow cross section continuously increased.
  • the thus gradually increasing filling flow prevents even more effective spattering and foaming.
  • the two-part closure element can be operated with only one drive when the first part is connected to a power transmission means for opening the closure element and the second part is coupled to the first part such that the second part of the closure element until reaching the first open position on the Valve seat rests.
  • a metering device 1 comprises inter alia a valve housing 2, which is arranged on a cover plate 3 of a filling space.
  • containers in particular packages of composite material, with a liquid, e.g. Juice, filled.
  • the outlet 4 of the metering device 1 is aligned with a corresponding passage cross-section 5 in the cover plate 3.
  • Below the cover 3 is arranged concentrically to the outlet 4 of the metering device 1 is a known cylindrical outlet 6.
  • the outlet 6 can of course also be attached directly to the metering device 1.
  • the outlet 6 is functionally divided into a central outlet 7 and an edge outlet 8 surrounding it. Both the central outlet 7 and the edge outlet 8 is formed by a plurality of side by side in the axial direction of the outlet 6 extending cylindrical, preferably circular cylindrical passages 9.
  • a two-part closure element is displaceably guided, which has a central punch 10 as a first part and an annular valve body 11 surrounding the punch 10 as a second part.
  • the punch 10 and the valve body 11 each have on the front side a central sealing plate 12 or an annular sealing plate 13, which together in the closed state of the closure element rest on the upper side 14 of the outlet 6 in a sealing manner.
  • the top 14 thus also forms the valve seat for the closure element.
  • the valve seat may also be formed as part of the valve housing 2, for example, as at the outlet 4 circumferential inwardly facing web on which the outer edge of the annular sealing plate 13 touches.
  • the central punch 10 is connected to a control rod 15 for opening and closing the closure element.
  • the control rod 15 is connected to a linear drive, not shown.
  • the annular valve body 11 is coupled to the punch 10.
  • the punch 10 has above the central sealing plate 12 a designed as a driver 16 section whose transition to the overlying portion of the punch 10 with a smaller diameter forms a circumferential shoulder 17.
  • the annular valve body 11 has around its center opening 18 around an around the punch 10 arranged, upwardly extending driving sleeve 19, which at its upper end has a cooperating with the shoulder 17 stop 20.
  • the driving sleeve 19 couples the valve body 11 to the punch 10.
  • the driving sleeve 19 is provided at its periphery with a plurality of passages 21.
  • the substantially vertically extending cylindrical, preferably circular cylindrical surface of the driver 16 on the punch 10 is an upward, diverging, preferably frustoconical surface 23 of the valve body 11.
  • the substantially perpendicular surface of the driver 16 on the punch 10 is in an acute angle ⁇ relative to the vertical inclined surface 23 of the valve body 11 opposite, so that when opening the punch 10, a small annular gap 24 between the punch 10 and the valve body 11 is formed.
  • a larger annular gap 25 between the annular sealing plate 13 of the valve body 11 and the top 14 of the outlet 6 is released.
  • the punch 10 and the valve body 11 in each position of the closure element have a defined position to each other and the annular sealing plate 13, the passages 9 in the outlet 6 sufficiently seals, a compression spring 26 is provided, on the one hand on the top of the valve body 11 and on the other is supported on a arranged in the upper portion of the punch 10 spring plate 27.
  • valve chamber formed by the valve housing 2 is provided with an inlet 28 for the dispensed Provided liquid, which is connected to a storage tank, not shown.
  • the punch 10 For actuating the punch 10 and the valve body 11 coupled thereto, the punch 10 is connected to the control rod 15, which is guided by a housing cover 29 with a sliding guide 30.
  • a sliding guide 30 In order to prevent the entry of contamination and the escape of liquid through the sliding guide 30, extends between the valve housing 2 and the punch 10, a membrane 31, which ensures a hermetic seal of the valve chamber with respect to the sliding guide 30.
  • Fig. 3 the punch 10 is raised. Now, a first, small amount of liquid, which is present through the passages 21 of the driving sleeve 19 on the punch 10, through the small annular gap 24 and through the central outlet 7 flow into the container.
  • the speed with which the punch 10 in the first, in FIG. 4 illustrated opening position of Lifting element can be raised and then lowered back into the closed position is preferably variable, whereby, in conjunction with the inclined at the angle ( ⁇ ) surface 23 of the valve body 11, a controlled, pressure-reducing opening can be realized. This ensures that at the beginning of the filling process, the impact of the liquid is minimized to the container bottom.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Filling Of Jars Or Cans And Processes For Cleaning And Sealing Jars (AREA)
  • Basic Packing Technique (AREA)
  • Devices For Dispensing Beverages (AREA)
  • Lift Valve (AREA)
EP11703626.9A 2010-01-27 2011-01-26 Dosiervorrichtung und dosierverfahren für flüssigkeiten Active EP2528851B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102010006005A DE102010006005A1 (de) 2010-01-27 2010-01-27 Dosiervorrichtung und Dosierverfahren für Flüssigkeiten
PCT/EP2011/051039 WO2011092188A1 (de) 2010-01-27 2011-01-26 Dosiervorrichtung und dosierverfahren für flüssigkeiten

Publications (2)

Publication Number Publication Date
EP2528851A1 EP2528851A1 (de) 2012-12-05
EP2528851B1 true EP2528851B1 (de) 2016-04-20

Family

ID=44064817

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11703626.9A Active EP2528851B1 (de) 2010-01-27 2011-01-26 Dosiervorrichtung und dosierverfahren für flüssigkeiten

Country Status (7)

Country Link
US (1) US10472218B2 (ru)
EP (1) EP2528851B1 (ru)
CN (1) CN102791612B (ru)
BR (1) BR112012016532B1 (ru)
DE (1) DE102010006005A1 (ru)
RU (1) RU2541293C2 (ru)
WO (1) WO2011092188A1 (ru)

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US7694692B2 (en) * 2004-07-08 2010-04-13 Conax Florida Corporation Non-magnetic latching servo actuated valve
EP1851112B1 (en) * 2005-02-23 2014-05-28 Norden Machinery Ab Filling nozzle
ES2307366B1 (es) * 2006-01-20 2009-09-18 Antonio Mengibar, S.A. Cabezal de llenado de bajo numero de reynolds.
US7753093B2 (en) * 2006-09-21 2010-07-13 Bevcorp, Llc Tipless can filling valve
FR2952047B1 (fr) * 2009-11-04 2011-12-09 Sidel Participations Dispositif de remplissage avec systeme de clapet particulier

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WO2011092188A1 (de) 2011-08-04
CN102791612B (zh) 2014-05-07
US20120291898A1 (en) 2012-11-22
US10472218B2 (en) 2019-11-12
CN102791612A (zh) 2012-11-21
BR112012016532A2 (pt) 2016-04-19
RU2012136549A (ru) 2014-03-10
DE102010006005A1 (de) 2011-07-28
RU2541293C2 (ru) 2015-02-10
EP2528851A1 (de) 2012-12-05
BR112012016532B1 (pt) 2019-09-10

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