EP2781254A1 - Fluidrührtankanordnung für eine Maschine zum Füllen von Behältern und Rührer für die Tankanordnung - Google Patents

Fluidrührtankanordnung für eine Maschine zum Füllen von Behältern und Rührer für die Tankanordnung Download PDF

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Publication number
EP2781254A1
EP2781254A1 EP13160250.0A EP13160250A EP2781254A1 EP 2781254 A1 EP2781254 A1 EP 2781254A1 EP 13160250 A EP13160250 A EP 13160250A EP 2781254 A1 EP2781254 A1 EP 2781254A1
Authority
EP
European Patent Office
Prior art keywords
helical element
shaft
agitator
axis
fluid
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.)
Granted
Application number
EP13160250.0A
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English (en)
French (fr)
Other versions
EP2781254B1 (de
Inventor
Stefano d'Errico
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.)
Sidel SpA
Original Assignee
Sidel SpA
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 Sidel SpA filed Critical Sidel SpA
Priority to EP13160250.0A priority Critical patent/EP2781254B1/de
Publication of EP2781254A1 publication Critical patent/EP2781254A1/de
Application granted granted Critical
Publication of EP2781254B1 publication Critical patent/EP2781254B1/de
Not-in-force legal-status Critical Current
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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
    • B01F27/05—Stirrers
    • B01F27/09—Stirrers characterised by the mounting of the stirrers with respect to the receptacle
    • B01F27/091—Stirrers characterised by the mounting of the stirrers with respect to the receptacle with elements co-operating with receptacle wall or bottom, e.g. for scraping the receptacle wall
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
    • B01F27/05—Stirrers
    • B01F27/11—Stirrers characterised by the configuration of the stirrers
    • B01F27/114—Helically shaped stirrers, i.e. stirrers comprising a helically shaped band or helically shaped band sections
    • B01F27/1145—Helically shaped stirrers, i.e. stirrers comprising a helically shaped band or helically shaped band sections ribbon shaped with an open space between the helical ribbon flight and the rotating axis
    • B01F27/11451—Helically shaped stirrers, i.e. stirrers comprising a helically shaped band or helically shaped band sections ribbon shaped with an open space between the helical ribbon flight and the rotating axis forming open frameworks or cages
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
    • B01F27/80—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis
    • B01F27/92—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis with helices or screws
    • B01F27/921—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis with helices or screws with helices centrally mounted in the receptacle
    • B01F27/9213—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis with helices or screws with helices centrally mounted in the receptacle the helices having a diameter only slightly less than the diameter of the receptacle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
    • B01F27/80—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis
    • B01F27/92—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis with helices or screws
    • B01F27/921—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis with helices or screws with helices centrally mounted in the receptacle
    • B01F27/9214—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis with helices or screws with helices centrally mounted in the receptacle with additional mixing elements other than helices; having inner and outer helices; with helices surrounding a guiding tube
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
    • B01F35/90—Heating or cooling systems
    • B01F35/92—Heating or cooling systems for heating the outside of the receptacle, e.g. heated jackets or burners
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
    • B01F35/90—Heating or cooling systems
    • B01F2035/99—Heating

Definitions

  • the present invention relates to a fluid-agitating tank assembly for a machine for filling containers.
  • the present invention also relates to an agitator for moving a fluid in a tank.
  • the present invention may be used to particular advantage for fluids with particles, such as soft drinks or beverages with fruit particles, which the following description will refer to, although this is in no way intended to limit the scope of protection as defined by the accompanying claims.
  • these beverages have to be delivered to the containers in a hot state and therefore they have to be heated when they are stored in the tanks. Moreover, they have to be continuously moved by an agitator housed in the tank in order to avoid that the fruit particles float on the free surface of the beverage or sink to the bottom of the tank.
  • agitators are typically formed by a shaft immersed in the tank, rotatable about its axis and provided with two or more blades acting on the whole beverage.
  • This kind of agitator tends to damage the fruit particles, in particular when these particles are sacs.
  • the damaging action on the fruit particles is further aggravated when the action of the blades of the agitator is combined with heating the beverage in the tank.
  • the standard agitators may be suitable for particles naturally floating or sinking but not for both of them.
  • a fluid-agitating tank assembly for a machine for filling containers, as claimed in claim 1.
  • the present invention also relates to an agitator for moving a fluid in a tank, as claimed in claim 17.
  • Number 1 in Figures 1 and 2 indicates as a whole a fluid-agitating tank assembly for a machine 2 ( Figure 1 ) for filling containers (known per se and not shown).
  • fluid relates to any pourable product having at least a liquid fraction.
  • the present invention is used to particular advantage for fluids with particles, i.e. fluids having not only a liquid fraction but also solid parts (the particles) immersed therein, as the fluid shown in Figure 2 ; typical examples are soft drinks or beverages containing fruit particles, such as soft fruit bits, fruit fibers and fruit sacs.
  • fluid may also encompass a pourable product formed by two or more miscible liquids, which have to be continuously agitated for improving their mixing.
  • Tank assembly 1 is used to store and agitate a fluid with particles destined to be fed to machine 2 and to fill a plurality of containers handled by such machine.
  • machine 2 is of known type and basically comprises a carousel 3, mounted to rotate continuously (anticlockwise in Figure 1 ) about a vertical axis A perpendicular to the Figure 1 plane.
  • the carousel 3 receives a succession of empty containers from an input star wheel 4, which is connected to carousel 3 at a first transfer station 5 and is mounted to rotate continuously about a respective longitudinal axis B parallel to axis A.
  • the carousel 3 releases a succession of filled containers to an output star wheel 6, which is connected to carousel 3 at a second transfer station 7 and is mounted to rotate continuously about a respective longitudinal axis C parallel to axes A and B.
  • Machine 2 further comprises a plurality of filling units 8, which are equally spaced angularly about axis A, are mounted along a peripheral portion of carousel 3, and are moved by the carousel 3 along a path P extending about axis A and through stations 5 and 7.
  • the fluid is delivered in a known manner from tank assembly 1 to machine 2 through a fluid delivering circuit 9, only partially shown in Figure 1 .
  • tank assembly 1 basically comprises a tank 10 filled in use with the above-mentioned fluid with particles and having an axis D parallel to axes A, B and C, and an agitator 11 coaxially housed in the tank 10 so as to be immersed in use in the fluid and supported by the tank 10 in a rotatable manner about axis D.
  • tank 10 has a substantially cylindrical lateral wall 12 of axis D and is closed, at its opposite axial ends, by a top wall 13 and a bottom wall 14.
  • top wall 13 externally supports a motor assembly 15 for moving agitator 11 about axis D
  • bottom wall 14 is provided with a mouth 17 of axis D, which can be selectively connected to a fluid feeding circuit (known per se and not shown) or to fluid delivering circuit 9 for delivering the fluid to the machine 2.
  • both top and bottom walls 13, 14 have dome-shaped or slightly rounded-shaped configurations.
  • a heating apparatus 20 is incorporated in the tank 10 for heating the fluid contained therein.
  • heating apparatus 20 comprises a cavity 21 formed in lateral and bottom walls 12, 14, an inlet 22 for feeding a heating medium to the cavity 21 and an outlet 23 for draining the heating medium from the cavity 21; in practice, inlet 22 and outlet 23 are both connected to a circuit (known per and not shown) for circulating continuously the heating medium through the cavity 21 and allowing a heat exchange with the fluid contained in the tank 10.
  • inlet 22 is formed in lateral wall 12 in a position adjacent to top wall 13, whilst outlet 23 is formed in bottom wall 14 on one side of mouth 17.
  • agitator 11 comprises moving means 25 acting in use on the fluid contained in the tank 10 for converting unidirectional rotation of the agitator 11 about axis D into bi-directional movement of the fluid in the tank 10 towards top and bottom walls 13, 14.
  • agitator 11 comprises a central shaft 26 of axis D, from which moving means 25 transversely project cantilevered.
  • Moving means 25 comprise at least a first helical element 27 and a second helical element 28, carried by shaft 26 and counter-posed to one another for imparting the fluid opposite movements towards top and bottom walls 13, 14 of tank 10.
  • helical elements 27, 28 are wound round axis D in opposite directions by considering a given advancing direction along the axis D.
  • helical element 27 is left-handed and produces in use a substantially axial fluid flow directed towards bottom wall 14 when the agitator 11 is turned clockwise about axis D; in a completely different manner, helical element 28 is left-handed and produces in use a substantially axial fluid flow directed towards top wall 13 when the agitator 11 is turned clockwise about axis D; it is however clear that helical element 27 may be also right-handed and helical element 28 may be left-handed with opposite actions on the fluid as a result of the same direction of rotation of the agitator 11 about axis D.
  • helical element 27 has a radius larger than the radius of helical element 28 with respect to axis D; in practice, helical element 28 is arranged inside helical element 27.
  • helical element 28 is directly wound on shaft 26, whilst helical element 27 is maintained spaced from the shaft 26 by a plurality of arms 30 radially protruding from the shaft 26.
  • moving means 25 comprise a further helical element 31 wound round axis D in the same direction as helical element 27 by considering a given advancing direction along the same axis, congruent with the helical element 27 and angularly spaced from the latter about the axis D.
  • Helical elements 27 and 31 have the same radius with respect to axis D and are preferably angularly spaced about axis D of an angle of 180°.
  • helical elements 27 and 31 define one double helix 32.
  • double helix 32 and helical element 28 are configured so as to move in use the fluid in the tank 10 in opposite directions substantially parallel to axis D upon rotation of the shaft 26 in a given direction of rotation (clockwise in Figure 2 ).
  • Helical elements 27 and 31 perfectly suit the tank shape in order to optimize the heat exchange between the heating apparatus 20 and the fluid.
  • helical elements 27 and 31 are arranged at a maximum distance of 1 cm from lateral and bottom walls 12, 14.
  • each helical element 27, 28, 31 is defined by a flat metal band bent to take the helical configuration.
  • moving means 25 further comprise an anchor-like plate element 35 carried transversally by end 26b of shaft 26 and acting on the bottom of tank 10 to avoid formation of deposits and vortices when the fluid is delivered through mouth 17.
  • plate element 35 protrudes from diametrically opposite sides of end 26b of shaft 26 and extends along a diametral plane of the shaft 26.
  • Plate element 35 is delimited by an outer U-shaped profile 36 and has a tapering configuration towards its free axial end facing bottom wall 14 of tank 10.
  • plate element 35 has a U-shaped configuration defining a cavity 37 for receiving end 26b of shaft 26 and two opposite ends 38a, 38b integrally connected to helical elements 27, 31, respectively.
  • plate element 35 extends over mouth 17 and crosswise thereto so as to divide the fluid flow exiting from the tank 10; thanks to this configuration, plate element 35 acts as an anti-vortex rotatable about axis D together with agitator 11.
  • helical elements 27, 31 impart a descendant axial movement towards bottom wall 14 to the fluid and particles in the peripheral region of the tank 10, whilst helical element 28 imparts an ascendant axial movement towards top wall 13 to the fluid and particles in the central region of the tank 10.
  • the particles contained in the fluid are forced to move downwards and upwards, so creating a continuous circulation in the tank 10.
  • the movements keep the particles in suspension in the fluid irrespective of the natural tendency of such particles to float or sink.
  • the anchor-like configuration of the plate element 35 keeps the bottom part of the tank 10 free from deposits and acts as an anti-vortex device on mouth 17 when the fluid is delivered to machine 2.
  • tank assembly 1 and agitator 11 The advantages of tank assembly 1 and agitator 11 according to the present invention will be clear from the foregoing description.
  • the Applicant has observed that the action of helical-shaped elements 27, 28, 31 on the fruit particles is very gentle, so avoiding any possible risk of producing damages, in particular to fruit particles constituted by sacs.
  • moving means 25 comprise at least two counter-posed helical elements 27, 28, 31, it is possible to obtain a mixing action suitable for both floating or sinking particles.
  • plate element 35 also operates as a movable anti-vortex device in the mouth 17.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Mixers Of The Rotary Stirring Type (AREA)
EP13160250.0A 2013-03-20 2013-03-20 Fluidrührtankanordnung für eine Maschine zum Füllen von Behältern Not-in-force EP2781254B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP13160250.0A EP2781254B1 (de) 2013-03-20 2013-03-20 Fluidrührtankanordnung für eine Maschine zum Füllen von Behältern

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP13160250.0A EP2781254B1 (de) 2013-03-20 2013-03-20 Fluidrührtankanordnung für eine Maschine zum Füllen von Behältern

Publications (2)

Publication Number Publication Date
EP2781254A1 true EP2781254A1 (de) 2014-09-24
EP2781254B1 EP2781254B1 (de) 2015-07-29

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Family Applications (1)

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EP13160250.0A Not-in-force EP2781254B1 (de) 2013-03-20 2013-03-20 Fluidrührtankanordnung für eine Maschine zum Füllen von Behältern

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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104815457A (zh) * 2015-04-22 2015-08-05 江苏沙家浜化工设备有限公司 具有二次蒸汽回收功能的笼式动态强制提取装置
CN105381748A (zh) * 2015-12-25 2016-03-09 刘建霞 多功能绞龙搅拌器及具有多功能绞龙搅拌器的发酵罐
CN106938181A (zh) * 2016-12-29 2017-07-11 武汉华丽环保科技有限公司 一种锥形螺带混合机
FR3051316A1 (fr) * 2016-05-23 2017-11-24 Seb Sa Pale de melange pour appareil de preparation d'aliment pour animaux
CN107551897A (zh) * 2017-09-27 2018-01-09 广州中臣埃普科技有限公司 一种冰浆搅拌桶
CN108380120A (zh) * 2018-05-09 2018-08-10 安龙县赶场电子商务有限公司 一种高精度比例混合搅拌设备
WO2018206710A1 (de) * 2017-05-10 2018-11-15 EKATO Rühr- und Mischtechnik GmbH Rührorganvorrichtung
CN110354929A (zh) * 2019-08-21 2019-10-22 绍兴市达冷肯生物科技有限公司 一种生物技术搅拌加热装置
WO2023102720A1 (en) * 2021-12-07 2023-06-15 Tetra Laval Holdings & Finance S.A. A buffer tank, a filling machine comprising the buffer tank and a method for filling liquid food product in packages

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US509987A (en) * 1893-12-05 Dough-mixer
US3352543A (en) * 1966-06-10 1967-11-14 Atlantic Res Corp Vertical mixer
NL125092C (nl) * 1960-02-26 1968-04-16 Compagnie De Saint-Gobain Werkwijze voor de massapolymerisatie van vinylchloride
US3482823A (en) * 1968-03-08 1969-12-09 Brighton Corp Mixing kettle
JPS5570332A (en) * 1978-11-21 1980-05-27 Japan Synthetic Rubber Co Ltd Tank with stirrer having ribbon-shaped blade and its operation method
DE4002527A1 (de) * 1989-02-03 1990-08-09 Hitachi Ltd Verfahren und vorrichtung zur herstellung von materialien mit hoher viskositaet
EP0398788A1 (de) * 1989-05-19 1990-11-22 Elf Atochem S.A. Grosstechnisches Verfahren zur Polykondensation von n-dichlorophosphoryl- oder n-dichlorothiophosphoryl-P-trichlorophosphazenen
EP0515852A1 (de) * 1991-05-31 1992-12-02 EKATO Rühr- und Mischtechnik GmbH Rührvorrichtung
EP0598253A1 (de) * 1992-11-18 1994-05-25 Shinko Pantec Co., Ltd. Mischvorrichtung und darin verwendetes unterstes bandförmiges Rührelement
EP1114672A2 (de) * 2000-01-07 2001-07-11 Jörg Hartmann Gärtank
CA2731629A1 (en) * 2011-02-11 2012-08-11 Zero Waste Energy Systems Inc. Ribbon screw agitator/flow director for horizontal anaerobic digester

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US509987A (en) * 1893-12-05 Dough-mixer
NL125092C (nl) * 1960-02-26 1968-04-16 Compagnie De Saint-Gobain Werkwijze voor de massapolymerisatie van vinylchloride
US3352543A (en) * 1966-06-10 1967-11-14 Atlantic Res Corp Vertical mixer
US3482823A (en) * 1968-03-08 1969-12-09 Brighton Corp Mixing kettle
JPS5570332A (en) * 1978-11-21 1980-05-27 Japan Synthetic Rubber Co Ltd Tank with stirrer having ribbon-shaped blade and its operation method
DE4002527A1 (de) * 1989-02-03 1990-08-09 Hitachi Ltd Verfahren und vorrichtung zur herstellung von materialien mit hoher viskositaet
EP0398788A1 (de) * 1989-05-19 1990-11-22 Elf Atochem S.A. Grosstechnisches Verfahren zur Polykondensation von n-dichlorophosphoryl- oder n-dichlorothiophosphoryl-P-trichlorophosphazenen
EP0515852A1 (de) * 1991-05-31 1992-12-02 EKATO Rühr- und Mischtechnik GmbH Rührvorrichtung
EP0598253A1 (de) * 1992-11-18 1994-05-25 Shinko Pantec Co., Ltd. Mischvorrichtung und darin verwendetes unterstes bandförmiges Rührelement
EP1114672A2 (de) * 2000-01-07 2001-07-11 Jörg Hartmann Gärtank
CA2731629A1 (en) * 2011-02-11 2012-08-11 Zero Waste Energy Systems Inc. Ribbon screw agitator/flow director for horizontal anaerobic digester

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104815457A (zh) * 2015-04-22 2015-08-05 江苏沙家浜化工设备有限公司 具有二次蒸汽回收功能的笼式动态强制提取装置
CN105381748A (zh) * 2015-12-25 2016-03-09 刘建霞 多功能绞龙搅拌器及具有多功能绞龙搅拌器的发酵罐
CN109152993A (zh) * 2016-05-23 2019-01-04 Seb公司 用于动物食物制备设备的混合叶片和动物食物制备方法
WO2017203149A1 (fr) * 2016-05-23 2017-11-30 Seb S.A. Pale de melange pour appareil de preparation d'aliment pour animaux et procédé de préparation d'aliment pour animaux
FR3051316A1 (fr) * 2016-05-23 2017-11-24 Seb Sa Pale de melange pour appareil de preparation d'aliment pour animaux
US11154826B2 (en) 2016-05-23 2021-10-26 Seb S.A. Mixing paddle for appliance for preparing animal feed, and method for preparing animal feed
CN106938181A (zh) * 2016-12-29 2017-07-11 武汉华丽环保科技有限公司 一种锥形螺带混合机
CN110621395B (zh) * 2017-05-10 2022-07-26 艾卡多搅拌及混合工程有限公司 搅拌元件装置
WO2018206710A1 (de) * 2017-05-10 2018-11-15 EKATO Rühr- und Mischtechnik GmbH Rührorganvorrichtung
CN110621395A (zh) * 2017-05-10 2019-12-27 艾卡多搅拌及混合工程有限公司 搅拌元件装置
JP2020519434A (ja) * 2017-05-10 2020-07-02 エカート リューア− ウント ミッシュテヒニク ゲーエムベーハーＥＫＡＴＯ Ｒｕｅｈｒ− ｕｎｄ Ｍｉｓｃｈｔｅｃｈｎｉｋ ＧｍｂＨ 攪拌要素装置
US10857509B2 (en) 2017-05-10 2020-12-08 EKATO Rühr- und Mischtechnik GmbH Stirring element device
CN107551897A (zh) * 2017-09-27 2018-01-09 广州中臣埃普科技有限公司 一种冰浆搅拌桶
CN107551897B (zh) * 2017-09-27 2023-11-24 广州中臣埃普科技有限公司 一种冰浆搅拌桶
CN108380120A (zh) * 2018-05-09 2018-08-10 安龙县赶场电子商务有限公司 一种高精度比例混合搅拌设备
CN110354929A (zh) * 2019-08-21 2019-10-22 绍兴市达冷肯生物科技有限公司 一种生物技术搅拌加热装置
WO2023102720A1 (en) * 2021-12-07 2023-06-15 Tetra Laval Holdings & Finance S.A. A buffer tank, a filling machine comprising the buffer tank and a method for filling liquid food product in packages

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