EP2038204A1 - Method for the safe control of a filling valve - Google Patents

Method for the safe control of a filling valve

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Publication number
EP2038204A1
EP2038204A1 EP07764724A EP07764724A EP2038204A1 EP 2038204 A1 EP2038204 A1 EP 2038204A1 EP 07764724 A EP07764724 A EP 07764724A EP 07764724 A EP07764724 A EP 07764724A EP 2038204 A1 EP2038204 A1 EP 2038204A1
Authority
EP
European Patent Office
Prior art keywords
filling
filling element
opening time
measured
flow measuring
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
EP07764724A
Other languages
German (de)
French (fr)
Other versions
EP2038204B1 (en
Inventor
Karl Lorenz
Achim Kunz
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.)
KHS GmbH
Original Assignee
KHS 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.)
Filing date
Publication date
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Application filed by KHS GmbH filed Critical KHS GmbH
Priority to PL07764724T priority Critical patent/PL2038204T3/en
Publication of EP2038204A1 publication Critical patent/EP2038204A1/en
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Links

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
    • B67C3/287—Flow-control devices, e.g. using valves related to flow control using predetermined or real-time calculated parameters
    • B67C3/288—Flow-control devices, e.g. using valves related to flow control using predetermined or real-time calculated parameters using master-slave controls
    • 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
    • B65B3/26—Methods or devices for controlling the quantity of the material fed or filled
    • B65B3/34—Methods or devices for controlling the quantity of the material fed or filled by timing of filling operations
    • 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
    • B67C3/007—Applications of control, warning or safety devices in filling machinery

Definitions

  • the invention relates to a method for controlling a filling system according to the preamble of claim 1.
  • For aseptic filling plants are generally known that form within a housing closed to the outside, with filtered sterile air clean room or clean room area through which a transport route for the containers or bottles reaches, then in which within the clean room area a rinser, a Filling machine and a capper are provided in succession in the conveying direction.
  • this clean-room area is surrounded by a security area in which, inter alia, locks or passages for supplying the empty containers to be filled or for discharging the filled and closed containers are provided.
  • filling elements for filling bottles or the like Containers with a liquid product, especially for filling bottles with drinks in different versions are known, even in versions as Filling elements for volume controlled filling (volumetric filling).
  • a flow measuring device is provided in a liquid line between a source of the liquid filling material (eg storage tank or boiler) and the respective filling element, the one the completion of the filling process, ie the closing of the liquid valve, inducing measuring or control signal to a central control device (computer) the filling machine supplies.
  • the invention achieves this by a method for controlling a filling system having the features of patent claim 1.
  • a plant according to the invention can continue to operate on a filling element despite a defect in a flow meter, without having to repair the defective flow meter immediately.
  • a relatively reliable filling of the container with take the defective first filling element.
  • the current conditions are taken into account, especially in the vicinity of the defective filling element, so that deviations in the desired filling only are low, and thus the appropriate requirements regarding the allowable deviations of the quantities can be met even in case of failure.
  • the filling elements are attached to a large rotating rotor, which can also carry a tank with the material to be filled. Since the level inside the tank fluctuates very much over time and even large spatial deviations occur inside the tank during operation, the applied filling pressure at the Depending on their position and the respective temporal conditions, filling elements are exposed to very strong fluctuations. Similar problems occur when each filling element carries its own container for the contents.
  • valve opening signal of the second filling element delayed by the necessary, dependent on the rotor speed rotation time to a filling position, is applied to the first filling element.
  • the method is particularly advantageous in the case of a defect of the flow measuring device of the first filling element to apply.
  • the correction factor is determined by evaluating the stored opening times of the first and the second filling element.
  • At least one central computer or control unit is provided. Since the use of such control units is also known on container treatment machines, further explanations to these units are not necessary. On a representation in the figures was also omitted.
  • the invention also relates to a control unit for carrying out the method according to the invention and to a filling system with a corresponding control unit.
  • Fig. 1 is a partially sectioned schematic side view of an aseptic filling plant for use with the invention and in Fig. 2 is a partially sectioned side view through a
  • a generally designated 1 aseptic filling for use with the controller of the invention is shown in more detail in Figure 1.
  • a rinser 2 a filling 3 and a capper 4 in a closed housing 5.
  • Containers are transported by means of a conveyor on one side through a lock 7 in the interior of the housing 5 and first by the rinser 2 rinsed once again before filling and disinfected.
  • the bottles 6 pass through the filling system 3 and are provided after completion of filling in the capper 4 with a closure.
  • the bottles 6 pass through another lock 8, through which they leave the germ-free environment inside the aseptic housing 5 again.
  • the filling machine 3 has a rotating rotor 10, which rotates about the machine vertical axis 11 by a drive system not shown in detail.
  • the bottles 6 are taken after leaving the rinser 2 from the rotor 10 and run with this on a partial circular path through the filling machine.
  • filling elements 11, in particular a first filling element 12 or a second filling element 13, are arranged.
  • the bottles run under the filling opening of the filling elements 12, 13 at the same rotational speed as the rotor 10 through the filling machine 3.
  • the filling elements 12, 13 are opened and to be filled Good goes into the bottles 6.
  • the filling elements 12, 13 are closed again and the bottles 6 are fed from the filling machine 3 to the capper 4.
  • the filling of other containers such as cans, multi-chamber bottles, etc. runs.
  • Such a filling element 12, 13 has at its lower end to a filling valve 14 which can be opened and closed, for example via a rod of an electromechanical switching element 15.
  • a liquid container 16 is the material to be filled, for example, a drink or a liquid medicine.
  • the level 17 of the reservoir 16 depends on a number of factors, for example, the time since the last filling or the flow rate of the feed system, not shown, which supplies the liquid to be filled to the filling machine 3. Due to the constantly changing liquid level 17, the filling pressure at the filling valve 14 is subject to strong fluctuations, so that the flow rate and thus the time required to reach a certain amount in the underlying bottle, also varies. In order to fill in spite of this fluctuation always a constant filling in the bottles 6, a magnetically inductive flow measuring device 18 is provided which can determine the amount of liquid passing through the valve 14 exactly.
  • the opening time of the front in the direction of rotation filling element 13 measured. This is the time that elapses from the opening of the filling valve of the filling element 13 until it closes, this time being determined on the basis of the still intact flow measuring device present there.
  • the filling valve of the filling element 12 is opened for the same period of time, wherein the start pulse is given by the time delay, which requires the filling element 12 to be rotated by the rotor 10 to the same starting position, at which previously the filling valve 13 am Start of filling has found.
  • both filling valves are open for an overlapping period, since the start pulse and the stop pulse of the intact valve 13 by the corresponding required, dependent on the rotational speed of the rotor 10 rotation time, delayed passed to the defective first filling element 12 becomes.
  • the defective first filling element 12 and the intact second filling element 13 are in spatial proximity in the machine, the conditions prevailing there are relatively similar, so that the method described above leads to a satisfactory filling even with the defective filling element 12.
  • the replacement of the defective flow measuring device can then take place at the next regular standstill of the system 1, since a complete cleaning and disinfection of the interior of the housing 5 must be made anyway anyway.
  • the opening times of further expediently anticipatory filling elements can be included in the calculation of the opening time for the defective filling element 12.
  • Static parameters for correcting the opening time are also possible, for example due to generally different flow rates of the individual filling elements due to structural conditions or a general extension or shortening of the opening time by a certain amount, in order to tend to achieve overfilling or underfilling of the container, depending on what is more useful in terms of plant operation.
  • the invention is of course not limited to the above embodiment, but can be modified in many ways, without departing from the spirit.
  • the arrangement of the mentioned machines and the addition of other types can be varied.
  • the invention can also be used in principle in conventional non-aseptic filling systems to minimize downtime.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Filling Of Jars Or Cans And Processes For Cleaning And Sealing Jars (AREA)
  • Basic Packing Technique (AREA)

Abstract

By use of a method for the control of a filling plant (3) which exhibits a plurality of controllable filling elements (12, 13) which contain flow measuring instruments (18), such filling plants, which are also suitable for aseptic use, are improved in such a way that even in case of certain disturbances, at least a partial use of the plant remains possible without an immediate repair having to be accomplished. This is achieved by the fact that for the control of the opening time of a first filling element (12), the opening time necessary for the run of the target flow rate is measured by at least a second fill element (13), using the flow measuring instrument thereon (18), and the first fuel element (12) is opened for the measured opening time.

Description

VERFAHREN ZUR AUS FALLS I CHEREN STEUERUNG EINES FÜLL VENTILS PROCEDURE FOR FOLLOWING THE OPERATION OF A FILLING VALVE
Die Erfindung betrifft ein Verfahren zur Steuerung einer Füllanlage gemäß dem Oberbegriff des Patentanspruches 1.The invention relates to a method for controlling a filling system according to the preamble of claim 1.
Anlagen zum aseptischen Abfüllen eines flüssigen Füllgutes in Flaschen oder dergl. Behälter gewinnen zunehmend an Bedeutung. Vielfach ist es erforderlich, ein flüssiges Füllgut aseptisch, d.h. unter Reinraumbedingungen (z.B. Reinraumklasse 100), in Flaschen oder dergl. Behälter abzufüllen und diese dann auch unter Reinraumbedingungen zu verschließen, beispielsweise beim Abfüllen von sehr empfindlichen Getränken, wie beispielsweise Milchprodukten, Säften oder aber beim Abfüllen von medizinischen Produkten usw. Dasselbe gilt auch für das Abfüllen von hygienisch und mikrobiologisch sensiblen Produkten unter keimarmen Luftbedingungen, wie z.B. bei Wein, Bier oder Fruchtschorlen.Systems for the aseptic filling of a liquid filling material in bottles or the like containers are becoming increasingly important. In many cases, it is necessary to aseptically convey a liquid product, i. under clean room conditions (eg clean room class 100), bottled or the like. Fill containers and then seal them under clean room conditions, for example, when bottling very sensitive drinks, such as dairy products, juices or in the filling of medical products, etc. The same is true for the filling of hygienic and microbiologically sensitive products under low-germ air conditions, such as with wine, beer or fruit spritzers.
Für das aseptische Abfüllen sind grundsätzlich Anlagen bekannt, die innerhalb einer Einhausung einen nach außen hin geschlossenen, mit gefilterter steriler Luft versorgten Reinraum oder Reinraumbereich bilden, durch den eine Transportstrecke für die Behälter oder Flaschen hindurchreicht, an welcher dann innerhalb des Reinraumbereiches ein Rinser, eine Füllmaschine sowie ein Verschließer in Förderrichtung aufeinanderfolgend vorgesehen sind. In der Regel ist dieser Reinraumbereich von einem Sicherheitsbereich umgeben, in dem dann unter anderem Schleusen oder Durchlässe zum Zuführen der leeren, zu füllenden Behälter bzw. zum Abführen der gefüllten und verschlossenen Behälter vorgesehen sind.For aseptic filling plants are generally known that form within a housing closed to the outside, with filtered sterile air clean room or clean room area through which a transport route for the containers or bottles reaches, then in which within the clean room area a rinser, a Filling machine and a capper are provided in succession in the conveying direction. As a rule, this clean-room area is surrounded by a security area in which, inter alia, locks or passages for supplying the empty containers to be filled or for discharging the filled and closed containers are provided.
Des weiteren sind Füllelemente zum Füllen von Flaschen oder dergl. Behälter mit einem flüssigen Füllgut, insbesondere auch zum Füllen von Flaschen mit Getränken in unterschiedlichen Ausführungen bekannt, auch in Ausführungen als Füllelemente für ein volumengesteuertes Füllen (volumetrisches Füllen). Bei diesen Füllelementen ist in einer Flüssigkeitsleitung zwischen einer Quelle des flüssigen Füllgutes (z.B. Vorratsbehälter oder Kessel) und dem jeweiligen Füllelement eine Durchflussmesseinrichtung vorgesehen, die ein die Beendigung des Füllvorganges, d.h. das Schließen des Flüssigkeitsventils, veranlassendes Messoder Steuersignal an eine zentrale Steuereinrichtung (Rechner) der Füllmaschine liefert.Furthermore, filling elements for filling bottles or the like. Containers with a liquid product, especially for filling bottles with drinks in different versions are known, even in versions as Filling elements for volume controlled filling (volumetric filling). In these filling elements, a flow measuring device is provided in a liquid line between a source of the liquid filling material (eg storage tank or boiler) and the respective filling element, the one the completion of the filling process, ie the closing of the liquid valve, inducing measuring or control signal to a central control device (computer) the filling machine supplies.
Um die beschriebenen aseptischen Abfüllanlagen keimfrei zu halten, ist es, wie beschrieben, erforderlich, den Zugang von außen zu verhindern. Sollte doch einmal eine Öffnung des aseptischen Bereiches, beispielsweise für Reparaturen, notwendig sein, muss anschließend eine intensive und langwierige Reinigung und Desinfektion des gesamten Bereiches erfolgen. Deshalb führt jede, auch noch so kurze Öffnung des Bereiches, beispielsweise um eine Reparatur durchzuführen, zu wirtschaftlichen Einbußen, die über die bei herkömmlichen Anlagen auftretenden weit hinausgehen.In order to keep the described aseptic filling systems germ-free, it is, as described, required to prevent access from the outside. If an opening of the aseptic area, for example for repairs, is necessary, intensive and lengthy cleaning and disinfection of the entire area must be carried out afterwards. Therefore, even the shortest opening of the area, for example, to carry out a repair, leading to economic losses that go beyond those occurring in conventional systems far.
Es ist die Aufgabe der vorliegenden Erfindung, Füllanlagen, die sich besonders für den aseptischen Einsatz eignen, so zu verbessern, dass bei gewissen Störungen zumindest ein zeitweiser Betrieb der Anlage möglich bleibt, ohne dass sofort eine Reparatur durchgeführt werden muss.It is the object of the present invention to improve filling systems, which are particularly suitable for aseptic use, so that at certain disturbances at least a temporary operation of the system remains possible without a repair must be carried out immediately.
Die Erfindung erreicht dies durch ein Verfahren zur Steuerung einer Füllanlage mit den Merkmalen des Patentanspruches 1.The invention achieves this by a method for controlling a filling system having the features of patent claim 1.
Auf diese Weise lässt sich eine erfindungsgemäße Anlage trotz eines Defektes in einem Durchflussmesser an einem Füllelement weiter betreiben, ohne dass die Reparatur des defekten Durchflussmessers umgehend zu erfolgen hat. Durch die Verwendung einer aktuell gemessenen Öffnungszeit eines zweiten Durchflussmessers kann eine relativ zuverlässige Füllung der Behälter auch mit dem defekten ersten Füllelement erfolgen. Auch bei den sich häufig stark ändernden aktuellen Betriebsbedingungen, beispielsweise was den Druck des Füllgutes in den Zuführleitungen oder Änderungen in der Geschwindigkeit der Füllanlage als Ganzes betrifft, werden die aktuellen Bedingungen insbesondere in der Nähe des defekten Füllelementes berücksichtigt, so dass Abweichungen in der Sollfüllmenge nur gering sind, und somit den entsprechenden Anforderungen bezüglich der zulässigen Abweichungen der Füllmengen auch im Störungsfall entsprochen werden kann.In this way, a plant according to the invention can continue to operate on a filling element despite a defect in a flow meter, without having to repair the defective flow meter immediately. By using a currently measured opening time of a second flow meter, a relatively reliable filling of the container with take the defective first filling element. Even with the frequently changing current operating conditions, for example as regards the pressure of the filling material in the supply lines or changes in the speed of the filling system as a whole, the current conditions are taken into account, especially in the vicinity of the defective filling element, so that deviations in the desired filling only are low, and thus the appropriate requirements regarding the allowable deviations of the quantities can be met even in case of failure.
So lässt sich eine Anlage für geraume Zeit weiter betreiben, ohne dass ihre Kapazität nachlässt oder die Zahl der fehlerhaften Abfüllungen deutlich zunimmt. Auf diese Weise kann der nötige Austausch des defekten Füllelementes bzw. der fehlerhaften Durchflussmesseinrichtung zu einem Zeitpunkt durchgeführt werden, an dem ohnehin eine planmäßige Desinfektion der gesamten Abfüllanlage nötig bzw. vorgeschrieben ist. So wird die notwendige Stillstandszeit der Gesamtanlage lediglich um die zum eigentlichen Austausch benötigte Zeit verlängert. Ein zusätzliches Runter- bzw. Hochfahren der gesamten Anlage und die nötige unplanmäßige Desinfektion können so vermieden werden.This means that a system can be operated for a long time without losing its capacity or significantly increasing the number of faulty fillings. In this way, the necessary replacement of the defective filling element or the faulty flow measuring device can be carried out at a time at which a scheduled disinfection of the entire filling system is required or prescribed anyway. Thus, the necessary downtime of the entire system is only extended by the time required for the actual exchange. An additional down or start up of the entire system and the necessary unplanned disinfection can be avoided.
Vorteilhafte Ausgestaltungen der Erfindung ergeben sich aus den Unteransprüche.Advantageous embodiments of the invention will become apparent from the dependent claims.
So ist es vorteilhaft, bei umlaufenden Füllelementen als zweites Füllelement das dem ersten Füllelement in Umlaufrichtung vorausgehende zu verwenden.Thus, it is advantageous to use as the second filling element in the circumferential direction of the first filling element in the circumferential direction.
Bei einer gebräuchlichen Bauart von Füllanlagen sind die Füllelemente an einem großen umlaufenden Rotor befestigt, der ebenfalls einen Tank mit dem abzufüllenden Gut tragen kann. Da der Füllstand im Inneren dieses Tanks im Laufe der Zeit sehr stark schwankt und sogar starke räumliche Abweichungen im Inneren des Tanks im Betrieb auftreten, ist der anliegende Fülldruck an den Füllelementen abhängig von ihrer Position und den jeweils zeitlichen Gegebenheiten sehr starken Schwankungen ausgesetzt. Ähnliche Probleme treten auf, wenn jedes Füllelement seinen eigenen Behälter für das Füllgut trägt.In a common type of filling the filling elements are attached to a large rotating rotor, which can also carry a tank with the material to be filled. Since the level inside the tank fluctuates very much over time and even large spatial deviations occur inside the tank during operation, the applied filling pressure at the Depending on their position and the respective temporal conditions, filling elements are exposed to very strong fluctuations. Similar problems occur when each filling element carries its own container for the contents.
Bei dieser Anlagenbauart ist es vorteilhaft, das dem Füllelement mit dem defekten Durchflussmesser in Drehrichtung vorausgehende Füllelement zur Bestimmung der nötigen Öffnungszeit zu verwenden, da dieses aufgrund der räumlichen Nähe der Zuführungen zum Fülltank sehr ähnlichen Bedingungen unterworfen ist, wie das defekte Element. Auf diese Weise ist die benötigte Öffnungszeit relativ exakt für das defekte Füllelement zu verwenden.In this type of installation, it is advantageous to use the filling element with the defective flow meter in the direction of rotation preceding filling element to determine the necessary opening time, since this is subjected due to the spatial proximity of the feeders to the filling tank very similar conditions, such as the defective element. In this way, the required opening time is relatively accurate to use for the defective filling element.
So wird das Ventil-Öffnungssignal des zweiten Füllelementes, verzögert um die nötige, von der Rotorgeschwindigkeit abhängige Drehzeit um eine Füllposition, an das erste Füllelement angelegt. Sobald die Solldurchlaufmenge in dem vorausgehenden zweiten Füllelement mittels der dortigen Durchflussmesseinrichtung gemessen wurde, wird dieses geschlossen und der Schließimpuls, wiederum verzögert um die benötigte Rotationszeit, auch an das erste Füllelement übermittelt.Thus, the valve opening signal of the second filling element, delayed by the necessary, dependent on the rotor speed rotation time to a filling position, is applied to the first filling element. Once the target flow rate has been measured in the preceding second filling element by means of the local flow measuring device, this is closed and the closing pulse, in turn delayed by the required rotation time, also transmitted to the first filling element.
Das Verfahren ist besonders vorteilhaft im Falle eines Defektes der Durchflussmesseinrichtung des ersten Füllelementes anzuwenden.The method is particularly advantageous in the case of a defect of the flow measuring device of the first filling element to apply.
Ggf. kann es vorteilhaft sein, zur Berechnung der nötigen Öffnungszeit des ersten Füllelementes die gemessene Öffnungszeit des zweiten Füllelementes mit einem Korrekturfaktor zu modifizieren.Possibly. It may be advantageous to modify the measured opening time of the second filling element with a correction factor to calculate the necessary opening time of the first filling element.
Dieser kann beispielsweise stationäre Abweichungen der Durchflussgeschwindigkeit des ersten und des zweiten Füllelementes berücksichtigen, die aufgrund der baulichen Gegebenheiten vorkommen können.This can take into account, for example, stationary deviations of the flow rate of the first and the second filling element, which may occur due to the structural conditions.
Vorteilhaft kann sein, dass die zum Durchlauf der Soll-Durchflussmenge nötigen Öffnungszeiten des letzen oder mehrerer vorangegangener Füllvorgänge für jedes Füllelement gespeichert werden können.It may be advantageous that the necessary for the passage of the desired flow rate Opening times of the last or several previous filling operations for each filling element can be stored.
Sollte sich die unmittelbare Verwendung der Öffnungszeit des zweiten Durchflusselementes ggf. mit einem Korrekturfaktor modifiziert als nicht ausreichend erweisen, ist es so möglich, aus den gespeicherten Öffnungszeiten weitere Rückschlüsse auf das aktuelle Maschinenverhalten zu ziehen, die sich aus den gespeicherten Öffnungszeiten ergeben und zur Berechnung des Korrekturfaktors zu verwenden.If the immediate use of the opening time of the second flow element may prove to be insufficient with a correction factor, it is thus possible to draw further conclusions about the current machine behavior from the stored opening times, which result from the stored opening times and to calculate the Correction factor to use.
Daher kann es zweckmäßig sein, dass der Korrekturfaktor durch Auswertung der gespeicherten Öffnungszeiten des ersten und des zweiten Füllelementes ermittelt wird.Therefore, it may be appropriate that the correction factor is determined by evaluating the stored opening times of the first and the second filling element.
Zur Realisierung der oben beschriebenen Funktionen ist mindestens eine zentrale Rechner- oder Steuereinheit vorgesehen. Da die Anwendung derartiger Steuereinheiten auch an Behälterbehandlungsmaschinen bekannt ist, sind weitere Ausführungen zu diesen Einheiten nicht notwendig. Auf eine Darstellung in den Figuren wurde ebenfalls verzichtet.To realize the functions described above, at least one central computer or control unit is provided. Since the use of such control units is also known on container treatment machines, further explanations to these units are not necessary. On a representation in the figures was also omitted.
Die Erfindung bezieht sich außerdem auf eine Steuereinheit zur Durchführung des erfindungsgemäßen Verfahrens sowie auf eine Füllanlage mit einer entsprechenden Steuereinheit.The invention also relates to a control unit for carrying out the method according to the invention and to a filling system with a corresponding control unit.
Die beschriebenen und weitere Vorteile der Erfindung ergeben sich aus der beigefügten Zeichnung. Diese zeigt in:The described and other advantages of the invention will become apparent from the accompanying drawings. This shows in:
Fig. 1 eine teilweise geschnittene schematische Seitenansicht einer aseptischen Abfüllanlage zur Verwendung mit der Erfindung sowie in Fig. 2 eine teilweise geschnittene Seitenansicht durch einFig. 1 is a partially sectioned schematic side view of an aseptic filling plant for use with the invention and in Fig. 2 is a partially sectioned side view through a
Füllventil zur Verwendung mit der Erfindung.Filling valve for use with the invention.
Eine allgemein mit 1 bezeichnete aseptische Füllstrecke zur Verwendung mit der Steuerung nach der Erfindung ist in Figur 1 näher dargestellt. Dabei befinden sich nacheinander ein Rinser 2, eine Füllanlage 3 und ein Verschließer 4 in einer abgeschlossenen Einhausung 5. Flaschen 6 oder dergl. Behälter werden mittels einer Fördereinrichtung auf der einen Seite durch eine Schleuse 7 in das Innere der Einhausung 5 transportiert und zunächst vom Rinser 2 vor der Befüllung noch einmal ausgespült und desinfiziert. Im Anschluss daran durchlaufen die Flaschen 6 die Füllanlage 3 und werden nach erfolgter Befüllung im Verschließer 4 mit einem Verschluss versehen. Im Anschluss daran durchlaufen die Flaschen 6 eine weitere Schleuse 8, durch die sie die keimfreie Umgebung im Inneren der aseptischen Einhausung 5 wieder verlassen.A generally designated 1 aseptic filling for use with the controller of the invention is shown in more detail in Figure 1. There are successively a rinser 2, a filling 3 and a capper 4 in a closed housing 5. Bottles 6 or the like. Containers are transported by means of a conveyor on one side through a lock 7 in the interior of the housing 5 and first by the rinser 2 rinsed once again before filling and disinfected. Following this, the bottles 6 pass through the filling system 3 and are provided after completion of filling in the capper 4 with a closure. Following this, the bottles 6 pass through another lock 8, through which they leave the germ-free environment inside the aseptic housing 5 again.
Zur Versorgung des Inneren der aseptischen Anlage mit Frischluft sind Luftzuführeinrichtungen 9 vorgesehen, die die Luft, nachdem sie durch nicht näher dargestellte Filtermechanismen staub- und keimfrei gemacht worden ist, dem Inneren der Anlage zuführen.To supply the interior of the aseptic system with fresh air air supply means 9 are provided, which the air, after it has been made dust and germ-free by filter mechanisms not shown, the interior of the system.
Die Füllmaschine 3 weist einen umlaufenden Rotor 10 auf, der sich um die Maschinenhochachse 11 durch ein nicht näher dargestelltes Antriebssystem dreht. Die Flaschen 6 werden nach dem Verlassen des Rinsers 2 vom Rotor 10 aufgenommen und laufen mit diesem auf einer Teilkreisbahn durch die Füllmaschine 3.The filling machine 3 has a rotating rotor 10, which rotates about the machine vertical axis 11 by a drive system not shown in detail. The bottles 6 are taken after leaving the rinser 2 from the rotor 10 and run with this on a partial circular path through the filling machine. 3
Im Rotor 10 sind Füllelemente 11 , insbesondere ein erstes Füllelement 12 oder ein zweites Füllelement 13, angeordnet. Die Flaschen laufen unter Füllöffnung der Füllelemente 12, 13 mit der gleichen Drehgeschwindigkeit wie der Rotor 10 durch die Füllmaschine 3. Die Füllelemente 12, 13 werden geöffnet und das zu füllende Gut läuft in die Flaschen 6 ein. Nach dem Durchlauf der nötigen Menge des Füllgutes werden die Füllelemente 12, 13 wieder geschlossen und die Flaschen 6 aus der Füllmaschine 3 dem Verschließer 4 zugeführt. Analog verläuft auch das Füllen anderer Behälter, wie beispielsweise Dosen, Mehrkammerflaschen usw.In the rotor 10, filling elements 11, in particular a first filling element 12 or a second filling element 13, are arranged. The bottles run under the filling opening of the filling elements 12, 13 at the same rotational speed as the rotor 10 through the filling machine 3. The filling elements 12, 13 are opened and to be filled Good goes into the bottles 6. After passing through the required amount of the filling material, the filling elements 12, 13 are closed again and the bottles 6 are fed from the filling machine 3 to the capper 4. Similarly, the filling of other containers, such as cans, multi-chamber bottles, etc. runs.
Der Aufbau eines Füllelementes 12, 13 ist in Figur 2 näher dargestellt.The construction of a filling element 12, 13 is shown in more detail in FIG.
Ein derartiges Füllelement 12, 13 weist an seinem unteren Ende ein Füllventil 14 auf, das beispielsweise über eine Stange von einem elektromechanischen Schaltelement 15 geöffnet und geschlossen werden kann. In einem Flüssigkeitsbehälter 16 befindet sich das abzufüllende Gut, beispielsweise ein Getränk oder eine Flüssigmedizin. Der Füllstand 17 des Vorratsbehälters 16 hängt von einer Reihe von Faktoren ab, beispielsweise dem Zeitpunkt seit dem letzten Füllvorgang oder der Flussrate des nicht näher dargestellten Zuführsystems, das die abzufüllende Flüssigkeit an der Füllmaschine 3 anliefert. Aufgrund des sich ständig ändernden Flüssigkeitspegels 17 ist der Fülldruck an dem Füllventil 14 starken Schwankungen unterworfen, so dass die Durchflussgeschwindigkeit und damit die Zeit, die zum Erreichen einer bestimmten Füllmenge in der darunter befindlichen Flasche nötig ist, ebenfalls schwankt. Um trotz dieser Schwankung immer eine konstante Füllmenge in die Flaschen 6 einzufüllen, ist eine magnetisch induktive Durchflussmesseinrichtung 18 vorgesehen, die die durch das Ventil 14 laufende Flüssigkeitsmenge exakt bestimmen kann.Such a filling element 12, 13 has at its lower end to a filling valve 14 which can be opened and closed, for example via a rod of an electromechanical switching element 15. In a liquid container 16 is the material to be filled, for example, a drink or a liquid medicine. The level 17 of the reservoir 16 depends on a number of factors, for example, the time since the last filling or the flow rate of the feed system, not shown, which supplies the liquid to be filled to the filling machine 3. Due to the constantly changing liquid level 17, the filling pressure at the filling valve 14 is subject to strong fluctuations, so that the flow rate and thus the time required to reach a certain amount in the underlying bottle, also varies. In order to fill in spite of this fluctuation always a constant filling in the bottles 6, a magnetically inductive flow measuring device 18 is provided which can determine the amount of liquid passing through the valve 14 exactly.
Das erfindungsgemäße Verfahren läuft wie folgt ab:The process according to the invention proceeds as follows:
Im Falle, dass der Durchflussmesser des Füllelementes 12 ausfällt, kann aufgrund der, wie beschrieben, stark schwankenden Maschinenparameter die durchfließende Menge Füllgut nicht mehr exakt bestimmt werden. Aus diesem Grunde wird die Öffnungszeit des in Drehrichtung vorauslaufenden Füllelementes 13 gemessen. Dieses ist die Zeit, die vom Öffnen des Füllventils des Füllelementes 13 bis zu seinem Schließen vergeht, wobei diese Zeit anhand der mittels der dort vorhandenen noch intakten Durchflussmesseinrichtung ermittelt wird. In der Folge wird dann das Füllventil des Füllelementes 12 für dieselbe Zeitdauer geöffnet, wobei der Startimpuls um die Zeit verzögert gegeben wird, die das Füllelement 12 benötigt, um vom Rotor 10 an dieselbe Startposition gedreht zu werden, an der sich vorher das Füllventil 13 am Start seines Füllvorganges befunden hat.In the event that the flow meter of the filling element 12 fails, due to the, as described, greatly fluctuating machine parameters, the amount of filling material flowing through can no longer be determined exactly. For this reason, the opening time of the front in the direction of rotation filling element 13 measured. This is the time that elapses from the opening of the filling valve of the filling element 13 until it closes, this time being determined on the basis of the still intact flow measuring device present there. As a result, then the filling valve of the filling element 12 is opened for the same period of time, wherein the start pulse is given by the time delay, which requires the filling element 12 to be rotated by the rotor 10 to the same starting position, at which previously the filling valve 13 am Start of filling has found.
Daraus ergibt sich auch, dass unter Umständen beide Füllventile für einen sich überlappenden Zeitraum geöffnet sind, da der Startimpuls und der Stoppimpuls des intakten Ventils 13 um die entsprechend benötigte, von der Drehgeschwindigkeit des Rotors 10 abhängige Drehzeit, verzögert an das defekte erste Füllelement 12 weitergegeben wird.It also follows that under certain circumstances, both filling valves are open for an overlapping period, since the start pulse and the stop pulse of the intact valve 13 by the corresponding required, dependent on the rotational speed of the rotor 10 rotation time, delayed passed to the defective first filling element 12 becomes.
Da sich das defekte erste Füllelement 12 und das intakte zweite Füllelement 13 in räumlicher Nähe in der Maschine befinden, sind die Bedingungen, die dort herrschen, relativ ähnlich, so dass das oben beschriebene Verfahren zu einer befriedigenden Befüllung auch mit dem defekten Füllelement 12 führt. Der Austausch der defekten Durchflussmesseinrichtung kann dann beim nächsten turnusmäßigen Stillstand der Anlage 1 erfolgen, da hier ohnehin eine Komplettreinigung und Desinfektion des Inneren der Einhausung 5 vorgenommen werden muss.Since the defective first filling element 12 and the intact second filling element 13 are in spatial proximity in the machine, the conditions prevailing there are relatively similar, so that the method described above leads to a satisfactory filling even with the defective filling element 12. The replacement of the defective flow measuring device can then take place at the next regular standstill of the system 1, since a complete cleaning and disinfection of the interior of the housing 5 must be made anyway anyway.
Sollte die beschriebene Verfahrensweise noch nicht zu ausreichenden Füllergebnissen führen, können die Öffnungszeiten weiterer zweckmäßigerweise vorauseilender Füllelemente, beispielsweise durch Mittelwertbildung, in die Berechnung der Öffnungszeit für das defekte Füllelement 12 mit einbezogen werden. Auch statische Parameter zur Korrektur der Öffnungszeit sind möglich, beispielsweise aufgrund allgemein unterschiedlicher Durchflussraten der einzelnen Füllelemente bedingt durch bauliche Gegebenheiten oder eine generelle Verlängerung bzw. Verkürzung der Öffnungszeit um einen gewissen Betrag, um tendenziell eher eine Über- bzw. Unterfüllung des Behälters zu erzielen, je nachdem, was in Bezug auf den Anlagenbetrieb sinnvoller ist. Neben der Verwendung fester Faktoren für diese Werte kann es zweckmäßig sein, wenn die Öffnungszeiten dieser oder aller Füllelemente mit funktionsfähigen Durchflussmessern über einen gewissen Zeitraum gespeichert und ausgewertet werden.If the procedure described does not yet lead to sufficient filling results, the opening times of further expediently anticipatory filling elements, for example by averaging, can be included in the calculation of the opening time for the defective filling element 12. Static parameters for correcting the opening time are also possible, for example due to generally different flow rates of the individual filling elements due to structural conditions or a general extension or shortening of the opening time by a certain amount, in order to tend to achieve overfilling or underfilling of the container, depending on what is more useful in terms of plant operation. In addition to the use of fixed factors for these values, it may be useful if the opening times of these or all filling elements with functional flow meters stored and evaluated over a period of time.
Die Erfindung ist selbstverständlich nicht auf das vorstehende Ausführungsbeispiel beschränkt, sondern kann in vielfältiger Hinsicht abgewandelt werden, ohne den Grundgedanken zu verlassen. So ist die Anordnung der erwähnten Maschinen sowie die Ergänzung mit weiteren Typen variierbar. Dasselbe gilt für die verwendeten Behälter zur Abfüllung sowie das einzufüllende Füllgut. Nicht zuletzt ist die Erfindung auch grundsätzlich bei konventionellen nicht aseptischen Abfüllanlagen einsetzbar, um Ausfallzeiten zu minimieren. The invention is of course not limited to the above embodiment, but can be modified in many ways, without departing from the spirit. Thus, the arrangement of the mentioned machines and the addition of other types can be varied. The same applies to the containers used for filling as well as the contents to be filled. Last but not least, the invention can also be used in principle in conventional non-aseptic filling systems to minimize downtime.
Bezugszeichenliste:LIST OF REFERENCE NUMBERS
1 Füllstrecke1 filling line
2 Rinser2 rinsers
3 Füllanlage3 filling system
4 Verschließer4 cappers
5 Einhausung5 enclosure
6 Flaschen6 bottles
7 Schleuse7 lock
8 Schleuse8 lock
9 Luftzuführeinrichtungen9 air supply devices
10 Rotor10 rotor
11 Maschinenhochachse11 machine vertical axis
12 erstes Füllelement12 first filling element
13 zweites Füllelement13 second filling element
14 Füllventil14 filling valve
15 elektromechanisches Schaltelement15 electromechanical switching element
16 Flüssigkeitsbehälter16 liquid containers
17 Füllstand17 level
18 Durchflussmesseinrichtung 18 flow measuring device

Claims

Patentansprüche: claims:
1. Verfahren zur Steuerung einer Füllanlage (3), die eine Mehrzahl von steuerbaren Füllelementen (12,13) mit DurchflussmesseinrichtungenA method of controlling a filling plant (3) comprising a plurality of controllable filling elements (12, 13) with flow measuring means
(18) aufweist, dadurch gekennzeichnet, dass zur Steuerung der Öffnungszeit eines ersten Füllelementes (12), die zum(18), characterized in that for controlling the opening time of a first filling element (12) connected to the
Durchlauf der Soll-Durchflussmenge nötige Öffnungszeit wenigstens eines zweiten Füllelementes (13) mittels der daran befindlichenPassing the desired flow rate necessary opening time of at least one second filling element (13) by means of the thereto
Durchflussmesseinrichtung (18) gemessen wird und das erste Füllelement (12) für die gemessene Öffnungszeit geöffnet wird.Flow measuring device (18) is measured and the first filling element (12) is opened for the measured opening time.
2. Verfahren nach Anspruch 1 , dadurch gekennzeichnet, dass die Füllelemente (12,13) umlaufen und als zweites Füllelement (13) das dem ersten Füllelement (12) in Umlaufrichtung vorausgehende verwendet wird.2. The method according to claim 1, characterized in that the filling elements (12,13) rotate and as a second filling element (13) which is the first filling element (12) used in the circumferential direction preceding.
3. Verfahren nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass das Verfahren nur im Fall eines Defektes der Durchflussmesseinrichtung3. The method according to claim 1 or 2, characterized in that the method only in the case of a defect of the flow measuring device
(18) des ersten Füllelementes (12) angewendet wird.(18) of the first filling element (12) is applied.
4. Verfahren nach einem der vorangegangenen Ansprüche, dadurch gekennzeichnet, dass zur Berechnung der nötigen Öffnungszeit des ersten Füllelementes (12), die gemessene Öffnungszeit des zweiten Füllelementes (13) mit einem Korrekturfaktor modifiziert wird. 4. The method according to any one of the preceding claims, characterized in that for the calculation of the necessary opening time of the first filling element (12), the measured opening time of the second filling element (13) is modified with a correction factor.
5. Verfahren nach Anspruch 4, dadurch gekennzeichnet, dass die zum Durchlauf der Soll-Durchflussmenge nötigen Öffnungszeiten des letzten oder mehrerer vorangegangener Füllvorgänge für jedes Füllelement (12,13) gespeichert werden.5. The method according to claim 4, characterized in that the necessary for the passage of the desired flow rate opening times of the last or several previous filling operations for each filling element (12,13) are stored.
6. Verfahren nach Anspruch 5, dadurch gekennzeichnet, dass der Korrekturfaktor durch Auswertung der gespeicherten Öffnungszeiten des ersten (12) und des zweiten Füllelementes (13) ermittelt wird.6. The method according to claim 5, characterized in that the correction factor is determined by evaluating the stored opening times of the first (12) and the second filling element (13).
7. Verfahren nach Anspruch 4 bis 6, dadurch gekennzeichnet, dass zusätzlich die Öffnungszeiten weiterer Füllelemente (11 ) gemessen werden und der Korrekturfaktor durch Auswertung der gewichteten Mittelwerte der gemessenen Öffnungszeiten der weiteren Füllelemente (12,13) ermittelt wird.7. The method according to claim 4 to 6, characterized in that in addition the opening times of further filling elements (11) are measured and the correction factor by evaluating the weighted average values of the measured opening times of the other filling elements (12,13) is determined.
8. Verfahren nach einem der vorangegangenen Ansprüche, dadurch gekennzeichnet, dass als Durchflussmesseinrichtung (18) magnetisch-induktive8. The method according to any one of the preceding claims, characterized in that as a flow measuring device (18) magneto-inductive
Messeinrichtungen verwendet werden.Measuring devices are used.
9. Verfahren nach einem der vorangegangenen Ansprüche, dadurch gekennzeichnet, dass als Füllelemente elektromechanisch und/oder pneumatisch und/oder hydraulisch steuerbare Ventile verwendet werden. 9. The method according to any one of the preceding claims, characterized in that electromechanically and / or pneumatically and / or hydraulically controllable valves are used as filling elements.
10. Steuereinheit zur Durchführung eines Verfahrens nach10. Control unit for carrying out a method according to
Anspruch 1 oder einem der folgenden.Claim 1 or one of the following.
11. Füllanlage mit einer Steuereinheit zur Durchführung eines Verfahrens nach Anspruch 1 oder einem der folgenden. 11. Filling plant with a control unit for carrying out a method according to claim 1 or one of the following.
EP07764724.6A 2006-06-27 2007-06-20 Method for the safe control of a filling valve Active EP2038204B1 (en)

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DE102006029490A1 (en) 2008-01-03
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US8985161B2 (en) 2015-03-24
CN101479182A (en) 2009-07-08
JP5280355B2 (en) 2013-09-04
JP2009541166A (en) 2009-11-26
RU2396203C1 (en) 2010-08-10
MX2008016139A (en) 2009-01-20
DE102006029490B4 (en) 2008-04-17
EP2038204B1 (en) 2015-05-27
BRPI0712284A2 (en) 2012-01-10
DE102006029490C5 (en) 2015-07-02
CN101479182B (en) 2012-07-25

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