EP3473588A1 - Vorrichtung und verfahren zum füllen von behältern mit einem fliessfähigen produkt unter druck - Google Patents

Vorrichtung und verfahren zum füllen von behältern mit einem fliessfähigen produkt unter druck Download PDF

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Publication number
EP3473588A1
EP3473588A1 EP18200015.8A EP18200015A EP3473588A1 EP 3473588 A1 EP3473588 A1 EP 3473588A1 EP 18200015 A EP18200015 A EP 18200015A EP 3473588 A1 EP3473588 A1 EP 3473588A1
Authority
EP
European Patent Office
Prior art keywords
receptacle
pressure
filling
valve
flow control
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP18200015.8A
Other languages
English (en)
French (fr)
Inventor
Roberto Zoni
Mario PETRELLA
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 Participations SAS
Original Assignee
Sidel Participations SAS
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 Participations SAS filed Critical Sidel Participations SAS
Publication of EP3473588A1 publication Critical patent/EP3473588A1/de
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B67—OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
    • 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
    • B67C3/06—Bottling liquids or semiliquids; Filling jars or cans with liquids or semiliquids using bottling or like apparatus using counterpressure, i.e. filling while the container is under pressure
    • B67C3/12—Pressure-control devices
    • 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
    • B67C3/06—Bottling liquids or semiliquids; Filling jars or cans with liquids or semiliquids using bottling or like apparatus using counterpressure, i.e. filling while the container is under pressure
    • B67C3/08—Bottling liquids or semiliquids; Filling jars or cans with liquids or semiliquids using bottling or like apparatus using counterpressure, i.e. filling while the container is under pressure and subsequently lowering the counterpressure
    • 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
    • B67C2003/2674—Means for preventing foaming of the liquid by creating a conical shaped flow directed to the container wall at the container neck height
    • B67C2003/268—Means for preventing foaming of the liquid by creating a conical shaped flow directed to the container wall at the container neck height by means of a flow channel integral with the filling nozzle

Definitions

  • the present invention relates to a filling device for a filling machine configured for filling receptacles, in particular plastic receptacles, with a pourable product at a pressure higher than the atmospheric pressure, for example a pourable gasified product such as sparkling water, soft drinks or carbonated beverages, etc.
  • the present invention relates, furthermore, to a method for filling receptacles with a pourable product at a pressure higher than the atmospheric pressure.
  • Typical used filling machines in this field essentially comprise a carousel rotating around a vertical axis, a reservoir containing the pourable product, and a plurality of filling devices peripherally carried by the carousel, connected to the reservoir by means of respective circuits or ducts and conveyed by the carousel along a circular transfer path.
  • the carousel receives a succession of empty receptacles from an inlet star wheel and directs the full receptacles to an outlet star wheel.
  • Each filling device essentially comprises a support element apt to receive and hold a respective receptacle in a vertical position, and a filling valve configured to feed a predetermined volume of a pourable product into said receptacle, while the filling device moves along the transfer path due to the rotary motion imparted by the carousel.
  • the tubular body has a longitudinal axis parallel to the carousel axis and terminates at a lower end with an axial discharge opening configured to come into contact, in use, with a top end mouth of the respective receptacle to be filled.
  • the channel of the tubular body comprises a tapered-section portion located above the discharge opening and narrowing in the direction of the discharge opening itself, up to a section of minimum diameter.
  • the shutter is movable inside the channel of the tubular body between a lower closing position, in which the shutter sealingly closes the tapered-section portion of the channel itself and interrupts the flow of the pourable product towards the discharge opening, and an upper opening position in which the shutter delimits, together with the tapered-section portion, an annular passage communicating with the discharge opening.
  • the filling valve comprises, furthermore, two circuits formed at least partially inside the tubular body:
  • the decompression circuit has an end opening communicating, in use, with the receptacle located under the filling valve, and another end opening opposite to the first one and connected, by means of an on/off type valve, to a decompression chamber kept at atmospheric pressure.
  • the decompression phase is carried out by opening, for one or more pre-set time intervals, the on/off valve that controls the connection of the decompression circuit, and thus the internal environment of the filled receptacle, with the decompression chamber.
  • the duration of the above-mentioned time intervals is set to the same value for each filling valve of the filling machine, before the start of production, being part of the predetermined filling procedure.
  • the object of the present invention is to provide a filling device which is of high reliability and limited cost, and can satisfy at least one of the above-mentioned needs.
  • this object is achieved by a filling device as claimed in claim 1.
  • the present invention further relates to a method for filling a receptacle with a pourable product as defined in claim 11.
  • number 1 denotes as a whole a filling machine configured for filling a plurality of receptacles 2 with a pourable product at a pressure value P S higher than the atmospheric pressure.
  • the receptacles 2 are preferably made of plastic material, and the pourable product is a liquid with the addition of gas under pressure, for example, sparkling water or a carbonated drink.
  • the machine 1 is fed with empty receptacles 2 and is configured for filling the latter with the pourable product.
  • the machine 1 comprises a rotary conveyor, preferably a carousel 3, configured to rotate about a vertical axis A, and a reservoir 5 containing the pourable product at pressure P S and located peripherally with respect to the carousel 3.
  • the carousel 3 carries in a cantilevered manner at its own peripheral portion 3a a plurality of filling devices 4 configured for filling respective receptacles 2 up to a predetermined level during the rotation of the carousel 3 itself around the axis A.
  • the filling devices 4 are thus conveyed by the carousel 3 along a circular transfer path at respective radially spaced positions with respect to the axis A.
  • each filling device 4 is fluidly connected to the reservoir 5 by means of a circuit 6 configured to convey the pourable product from the reservoir 5 to the filling device 4 itself.
  • the carousel 3 receives a succession of empty receptacles 2 from an inlet star wheel (not illustrated) and directs the filled receptacles 2 to an outlet star wheel (also not illustrated).
  • each receptacle 2 is defined by a bottle having a longitudinal axis B and advanced in a vertical position by the carousel 3.
  • each receptacle 2 is advanced by the carousel 3 with its own axis B parallel to the axis A of the carousel 3.
  • each receptacle 2 has a neck 7 coaxial with the axis B and defining a threaded surface 7a designed to allow the closure thereof by means of a screw cap (according to a known manner and not described in detail).
  • each filling device 4 comprises a filling valve 8 configured to control the outflow of the pourable product towards a respective receptacle 2 to be filled, and support means 10 adapted for supporting such receptacle 2 in a vertical position under the respective filling valve 8.
  • the upper edge of the neck 7 of the receptacle 2 is placed in contact with the filling valve 8 so as to receive from the latter the pourable product in a fluid-tight condition.
  • the filling device 4 is thus configured to perform a so-called “contact filling operation", in which the receptacle 2 is supported in fluid-tight contact against the filling valve 8.
  • Such filling valve 8 essentially comprises:
  • the tubular body 11 presents an upper end portion 14, an intermediate portion 17 provided with a transverse inlet opening 15 configured to receive the pourable product from the reservoir 5 through the circuit 6, and a lower end portion 16 ending with an axial outlet opening 18 configured to feed the pourable product to the respective receptacle 2.
  • the lower end portion 16 is adapted to come into contact, in use, with the neck 7 of the respective receptacle 2 to be filled so as to place the upper edge of the neck 7 itself in fluid connection with the outlet opening 18.
  • the end portion 16 comprises an annular gasket 20 defining, in use, an axial abutment for the neck 7 of the respective receptacle 2 and configured for sealing the latter to the filling valve 8 during the filling process.
  • annular gasket 20 defining, in use, an axial abutment for the neck 7 of the respective receptacle 2 and configured for sealing the latter to the filling valve 8 during the filling process.
  • the channel 12 comprises, at the lower end portion 16 of the tubular body 11, a tapered-section portion 21 defining the terminal part of the channel 12 itself.
  • the portion 21 comprises a first frustum-conical segment 22, with a section tapering towards the outlet opening 18, and a second substantially cylindrical segment 23, extending from the minimum section of segment 22 and ending, after a further final tapering, with the outlet opening 18.
  • the segment 22 is located upstream of the segment 23 with respect to the flow direction of the pourable product inside the channel 12 and has a diameter gradually decreasing towards the diameter of the segment 23 itself.
  • the shutter 13 is coaxially mounted inside the channel 12 of the tubular body 11.
  • the shutter 13 comprises an externally cylindrical upper portion 25, an intermediate portion 26 having a diameter larger than the diameter of the upper portion 25 and arranged below the latter, and a lower portion 29 extending axially from the intermediate portion 26 in the direction of the lower end portion 16 of the tubular body 11 and terminating in close proximity to the outlet opening 18 and above the latter.
  • the intermediate portion 26 is provided with flow-stabilizing means for the pourable product, for example a swirler 28, configured to impart a rotating motion to the pourable product itself.
  • flow-stabilizing means for the pourable product for example a swirler 28, configured to impart a rotating motion to the pourable product itself.
  • the shutter 13 is also provided, at the intermediate portion 26, with a sealing ring 27, preferably made of an elastomeric material and configured to selectively cooperate in a fluid-tight manner with the segment 22 of the channel 12 so as to prevent the outflow of the pourable product towards the outlet opening 18 and, therefore, inside the receptacle 2 to be filled.
  • a sealing ring 27 preferably made of an elastomeric material and configured to selectively cooperate in a fluid-tight manner with the segment 22 of the channel 12 so as to prevent the outflow of the pourable product towards the outlet opening 18 and, therefore, inside the receptacle 2 to be filled.
  • the shutter 13 is movable inside the channel 12 of the tubular body 11 between:
  • the movement of the shutter 13 from the closing position to the opening position is obtained by means of the actuator 24, preferably a fluid controlled actuator.
  • the actuator 24 comprises a plunger 24a housed inside a respective chamber 24b located at the upper end portion 14 of the filling device 4.
  • the chamber 24b is adapted to receive a fluid under pressure (e.g. air, water or oil) configured to exert a thrust on the plunger 24a.
  • the shutter 13 is coupled to the plunger 24a, according to a known manner and not described in detail, and its movement between the closing and opening positions directly depends on the movement of the plunger 24a, as this is caused by the fluid under pressure on the inside of chamber 24b.
  • the actuation of the shutter 13 could be achieved by means of a mechanical or electromagnetic actuator.
  • the filling valve 8 further comprises:
  • the pressurization-exhaust circuit 30 comprises a duct 31 which fluidly connects the internal environment of the respective receptacle 2 to an annular chamber 32 of the pressurization-exhaust circuit 30 itself, formed in the carousel 3 and containing a fluid under pressure, for example carbon dioxide.
  • the duct 31 has a lower opening 36 communicating, in use, with the receptacle 2 and an upper opening 37 communicating with the chamber 32.
  • the duct 31 of the pressurization-exhaust circuit 30 comprises, proceeding from the direction starting from the lower opening 36 to the upper opening 37:
  • the decompression circuit 33 comprises a duct 34 which fluidly connects the internal environment of the respective receptacle 2 to an annular chamber 35 formed in the carousel 3; the chamber 35 is kept at a pressure lower than the pressure inside the receptacle 2 at the end of the filling and can be connected in turn to the external environment at atmospheric pressure according to a known manner.
  • the duct 34 has a lower opening 40 communicating, in use, with the receptacle 2, and an upper opening 41 communicating with the chamber 35.
  • the duct 34 of the decompression circuit 33 comprises, proceeding in the direction from the lower opening 40 to the upper opening 41:
  • the filling device 4 comprises, furthermore, a pressure sensor 42, preferably a pressure gauge, configured to generate a pressure signal W correlated with the pressure inside the respective receptacle 2 connected to the filling valve 8; the filling device 4 further comprises a control unit 43 configured to receive the pressure signal W from the pressure sensor 42 and to control the valve 39 so as to cause a pressure drop in the respective receptacle 2 up to a predetermined final pressure value P 0 .
  • control unit 43 controls the closure of the valve 39 so as to terminate the decompression phase.
  • the decompression phase is dynamic.
  • the final pressure value P 0 is chosen to be higher than the atmospheric pressure; in particular, this final pressure value P 0 is preferably higher than the atmospheric pressure of an amount ranging between 0.1 and 0.5 bar, even more preferably between 0.2 and 0.3 bar.
  • the decompression phase can be carried out in two or more successive cycles: in practice, one or more intermediate pressure values P i can be selected and each time the pressure sensor 42 measures such pressure values P i , the control unit 43 controls the pre-set time closure of the valve 39 for a pre-set time interval.
  • the pressure sensor 42 is preferably fixed externally to the tubular body 11 and is connected to the portion 34a of the duct 34; the pressure detected at this point corresponds to that inside the underlying receptacle 2.
  • valve 39 of the decompression circuit 33 is of the on/off type, i.e. it is selectively movable between two opening and closing positions following the control signal received from the control unit 43.
  • Figures from 3a to 3 show the operation of the filling machine 1 during four successive moments.
  • the receptacle 2 is fed by the carousel 3 in a position lower than the respective filling device 4 and is arranged by the support means 10 so as to be located with the upper end of the neck 7 in abutment against the annular gasket 20 of the tubular body 11 ( Figure 3a ).
  • the valve 38 is opened to start the pressurization phase: the gas under pressure, typically carbon dioxide, contained in chamber 32 outflows along the pressurization-exhaust circuit 30, inside the receptacle 2, until the pressure on its inside reaches the pressure value of the reservoir 5 of the pourable product to be introduced into the receptacle 2 itself ( Figure 3b ).
  • the gas under pressure typically carbon dioxide
  • the shutter 13 is moved, by means of the actuator 24 from the closing position to the opening position.
  • the pourable product can therefore flow into the channel 12, through the outlet opening 18 and, then, inside the receptacle 2.
  • the gas contained in the receptacle 2 is released through the pressurization-exhaust circuit 30 ( Figure 3c ).
  • valve 39 is opened to start the decompression phase: the receptacle 2 is depressurized by means of the outflow of the gas contained in the upper part of the neck 7, in the pressurization-exhaust circuit 30 up to the closed valve 38, and in the channel 12 up to the sealing ring 27 along the decompression circuit 33 towards the chamber 35.
  • the pressure sensor 42 measures the pressure value in the portion 34a of the duct 34 corresponding to that contained inside the filled receptacle 2; as soon as said value reaches the pre-set intermediate pressure value/s P i , the control unit controls the temporary closure of the valve 39 for a pre-set time interval thus allowing the pourable product contained in the receptacle 2 to reduce its "agitation" by settling to the new pressure value/s.
  • the control unit 43 controls the permanent closure of the valve 39, so as to end the decompression phase.
  • Figure 4a shows the pressure variation in the receptacle 2 during the decompression phase in the hypothesis where two decompression cycles are performed with a temporary closure of the valve 39 for a pre-set time for reaching a certain set pressure value P i .
  • the receptacle 2 is then detached from the filling device 4 at the final pressure value P 0 to be conveyed by the carousel 3 to the outlet star wheel. During such phase, the pressure of the receptacle 2 will drop to the value of the atmospheric pressure P a .
  • the selective control of the valve 39 of the decompression circuit 33 correlated with the pressure value measured inside the receptacle 2 by the pressure sensor 42, allows the decompression phase to be carried out dynamically in multiple cycles and, therefore, to reach a certain determined final pressure value P 0 in the receptacle 2 at the end of the decompression phase itself.
  • the amount of foam generated is always predictable and kept to a minimum, thus avoiding unforeseen and unwanted product loss.
  • valve 39 of the decompression circuit 33 may be a modulating valve, i.e. capable of defining a plurality of opening positions with passage sections different from one another.

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  • Filling Of Jars Or Cans And Processes For Cleaning And Sealing Jars (AREA)
EP18200015.8A 2017-10-18 2018-10-12 Vorrichtung und verfahren zum füllen von behältern mit einem fliessfähigen produkt unter druck Withdrawn EP3473588A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT102017000117756A IT201700117756A1 (it) 2017-10-18 2017-10-18 Dispositivo e metodo di riempimento di recipienti con un prodotto versabile in pressione

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EP3473588A1 true EP3473588A1 (de) 2019-04-24

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EP18200015.8A Withdrawn EP3473588A1 (de) 2017-10-18 2018-10-12 Vorrichtung und verfahren zum füllen von behältern mit einem fliessfähigen produkt unter druck

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EP (1) EP3473588A1 (de)
IT (1) IT201700117756A1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021043621A1 (de) * 2019-09-02 2021-03-11 Khs Gmbh VERFAHREN ZUM BEFÜLLEN UND VERSCHLIEßEN VON BEHÄLTERN

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0601514A1 (de) * 1992-12-10 1994-06-15 KHS Maschinen- und Anlagenbau Aktiengesellschaft Füllmaschine, insbesondere Gegendruck-Füllmaschine
EP1127835A1 (de) * 2000-02-23 2001-08-29 KHS Maschinen- und Anlagenbau Aktiengesellschaft System sowie Verfahren zum Füllen von Behältern mit einem flüssigen Füllgut
WO2005056464A1 (de) * 2003-12-13 2005-06-23 Khs Maschinen- Und Anlagenbau Ag Füllelement für eine füllmaschine sowie füllmaschine mit derartigen füllelementen
EP1411023B1 (de) 2002-10-17 2006-12-27 Shibuya Kogyo Co., Ltd Füllventil
DE102010006028A1 (de) * 2010-01-27 2011-07-28 KHS GmbH, 44143 Verfahren sowie Füllsystem zum Druckfüllen von Behältern

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0601514A1 (de) * 1992-12-10 1994-06-15 KHS Maschinen- und Anlagenbau Aktiengesellschaft Füllmaschine, insbesondere Gegendruck-Füllmaschine
EP1127835A1 (de) * 2000-02-23 2001-08-29 KHS Maschinen- und Anlagenbau Aktiengesellschaft System sowie Verfahren zum Füllen von Behältern mit einem flüssigen Füllgut
EP1411023B1 (de) 2002-10-17 2006-12-27 Shibuya Kogyo Co., Ltd Füllventil
WO2005056464A1 (de) * 2003-12-13 2005-06-23 Khs Maschinen- Und Anlagenbau Ag Füllelement für eine füllmaschine sowie füllmaschine mit derartigen füllelementen
DE102010006028A1 (de) * 2010-01-27 2011-07-28 KHS GmbH, 44143 Verfahren sowie Füllsystem zum Druckfüllen von Behältern

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021043621A1 (de) * 2019-09-02 2021-03-11 Khs Gmbh VERFAHREN ZUM BEFÜLLEN UND VERSCHLIEßEN VON BEHÄLTERN
US11795045B2 (en) 2019-09-02 2023-10-24 Khs Gmbh Method of filling and closing containers, such as bottles and similar containers, for containing products, such as beverages and similar products

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