EP1884466B1 - Filling facility for flowable masses - Google Patents

Filling facility for flowable masses Download PDF

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Publication number
EP1884466B1
EP1884466B1 EP07014460A EP07014460A EP1884466B1 EP 1884466 B1 EP1884466 B1 EP 1884466B1 EP 07014460 A EP07014460 A EP 07014460A EP 07014460 A EP07014460 A EP 07014460A EP 1884466 B1 EP1884466 B1 EP 1884466B1
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EP
European Patent Office
Prior art keywords
filling
pressure
valve
substance
actual value
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Not-in-force
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EP07014460A
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German (de)
French (fr)
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EP1884466A1 (en
Inventor
Reinhold Walther
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Ludwig Schwerdtel GmbH
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Ludwig Schwerdtel GmbH
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Publication of EP1884466A1 publication Critical patent/EP1884466A1/en
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    • 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
    • B65B3/04—Methods of, or means for, filling the material into the containers or receptacles
    • B65B3/10—Methods of, or means for, filling the material into the containers or receptacles by application of pressure to material
    • B65B3/12—Methods of, or means for, filling the material into the containers or receptacles by application of pressure to material mechanically, e.g. by pistons or pumps
    • 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
    • B65B3/04—Methods of, or means for, filling the material into the containers or receptacles
    • B65B3/16—Methods of, or means for, filling the material into the containers or receptacles for filling collapsible tubes

Definitions

  • the invention relates to a filling plant for flowable compositions, in particular for medium to high viscosity compositions, according to the preamble of claim 1.
  • a filling system for flowable materials known in which the masses to be filled are conveyed by a delivery line by means of a pump.
  • a pressure accumulator for the mass to be filled is seconded, in which the mass to be filled is applied directly with compressed air and thus kept under a predetermined pressure.
  • the pressure of the compressed air can be changed via a pressure control valve which is connected to a control device.
  • the accumulator continue to fill level sensors associated with which the level is detected in the pressure accumulator.
  • a flow meter is arranged in the delivery line for measuring an actual value of the quantity of mass to be filled flowing through the flow meter.
  • the flow meter is a filling valve for filling the mass in each metered amount in tubes or the like arranged downstream. Furthermore, a control unit is provided, which is for receiving from the respective actual value of the amount flowing through the flow is formed to be filled mass reproducing measurement signal. The control unit is designed to continuously compare these actual values with a predetermined desired value of the respective quantity of the mass to be filled and to generate and deliver a control signal to the filling device for closing the filling valve.
  • a device for metering and filling a liquid in packaging container in which a pressure sensor for detecting the fluid pressure is provided, which is connected to a control device.
  • the achievable pressure consistency over this serves to compensate for different levels in a reservoir.
  • the invention is therefore an object of the invention to provide a filling system of the general category, which requires only a small cleaning effort in recipe conversion, but which allows both a high DosierGenautechnik and a high filling speed.
  • Core of the invention is the buffer means by which the mass is constantly kept under constant pressure. This makes it possible to carry out a particularly simple and accurate dosing in the actual filling device, which consists only of a volumetric or optionally also gravimetric, but preferably volumetric flow meter and a downstream filling valve, not as the actual metering valve , For example, piston metering valve must be configured.
  • This refinement means that cleaning of the filling system is very quickly effected by the subsequent new mass during a formulation changeover.
  • the constant maintenance of the pressure of the mass in the entire filling plant including the upstream mixer allows, in particular when using a static mixer and an optimal mixing result in the static mixer.
  • the driving accuracy of the filling valve is particularly high. Since the filling valve is designed only as open-to-valve, it is also free of clogging, whereby the dosing accuracy is very high. Because of the tracking freedom and the cycle times can be minimized.
  • a frame 1 designed as a buffer cylinder 2 buffer housing with a vertical center-longitudinal axis of a buffer device 3, in which a pressure piston 4 in the direction of the central longitudinal axis displaceable and opposite the cylinder 2 is guided sealed.
  • a linear drive in the form of a hydraulically actuated piston-cylinder drive 5 is arranged in the hydraulic cylinder 6, a piston 7 is acted upon on both sides. Its piston rod 8 is connected in the direction of the central longitudinal axis with the pressure piston 4.
  • valve 12 On both sides of the piston 7 open into the hydraulic chamber 9 of the hydraulic cylinder 6 hydraulic lines 10, 11, which begin at a formed as a solenoid valve proportional valve 12. In this valve 12 opens a coming from a hydraulic pressure source, not shown feed line 13 and a discharge line 14 a. The valve 12 is driven by a central control unit 15.
  • a static mixer 17 opens, through which a premixed mass, for example body care cream, is supplied.
  • the individual components of the mass are supplied to the static mixer 17 in practice usual way and promoted more or less pulsating by a mixer, not shown, by the mixer 17 and this intensively mixed by the designed in the usual way mixer internals 18.
  • a pressure transducer 21 is arranged in the form of a pressure cell in the delivery line 20, by means of which the pressure of the mass is measured by the static mixer 17 in the delivery line 20 and optionally the Buffer room 16 is promoted. A signal corresponding to the actual value of this pressure is likewise transmitted to the control unit 15.
  • the actual filling device 22 is provided at the end of the delivery line 20, the actual filling device 22 is provided. This consists essentially of a arranged in the delivery line 20 flow meter 23 and this immediately downstream filling valve 24.
  • the flow meter 23 is the respective actual value of the flow corresponding - usually digital - on the signals Control unit 15.
  • the filling valve 24 has a downwardly projecting filling tube 25, the lower valve opening 26 is closed by a valve plate 27 and can be opened.
  • the valve plate 27 is actuated in a conventional manner by a filling tube 25 upwardly passing valve rod 28 which is linearly actuated by means of a valve actuator 29.
  • This is a pneumatically actuated piston-cylinder drive. This is acted upon by a compressed air source, not shown, with compressed air.
  • the control is carried out via a solenoid valve 30 and two connecting them to the drive 29 lines 31, 32.
  • the control of the solenoid valve 30, ie its operation, is carried out by the control unit 15.
  • the filling valve 24 is in Fig. 1b shown in closed position.
  • the valve rod 28 is lifted with the valve plate 27, so that the valve port 26 is opened. If, in contrast, the valve drive 29 is acted upon by the compressed air via the line 32, then the valve rod 28 becomes pressed down with the valve plate 27 and thus the valve opening 26 is closed.
  • a plurality of filling devices 22 may also be provided behind the buffer device 3.
  • static mixing inserts 34 are arranged in this branch conveying line 33 and the conveying line 20, by means of which causes a strong cleaning effect in a recipe conversion due to strong turbulence in the flow entry.
  • the pressure piston 4 has a buffer space 16 and the conveying line 20 facing surface 35 in the form of a downwardly tapering truncated cone. This surface 35 corresponds to a contact surface 36 in the bottom 37 of the buffer cylinder 2.
  • Fig. 1a can recognize, can be emptied residue-free into the delivery line 20 by this configuration, the buffer space 16 when the pressure piston 4 from the in Fig. 1a shown upper position in the bottom position also shown is moved.
  • the filling system works as follows:
  • the buffer device 3 is fed by the static mixer 17 with a premixed mass to be filled.
  • the pressure sensor 21 constantly detects the actual value of the pressure with which this mass is applied and outputs the corresponding signals to the control unit 15. From there, in case of deviations from a predetermined desired value of the pressure, the proportional valve 12th driven in such a way that at a deviation the actual value of the pressure down, so at a pressure drop in the mass, the piston 7 is pressurized via line 10 from above with hydraulic fluid, so that the pressure piston 4 is moved down, so that in turn below the pressure Piston 4 located in the buffer space 16 mass is subjected to higher pressure. It should be added that the mass conveyed from the static mixer 17 to the filling device 22 is constantly present against the pressure piston 4.
  • the proportional valve 12 is switched such that pressure fluid is forced through the line 11 from below into the hydraulic chamber 9, so that the piston 7 is moved together with the piston rod 8 upwards.
  • the pressure piston 4 follows, so that the mass located below the pressure piston 4 in the buffer space 16 is relieved of pressure.
  • substantially cylindrical vessels 38 such as small cartridges or tubes, filled with the mentioned mass.
  • these vessels 38 are largely pushed onto the filling tube 25 from below.
  • the filling process is triggered by the control unit 15 by a corresponding signal to the solenoid valve 30.
  • a signal is emitted when the vessel 38 to be filled is in the filling position in front of the valve opening 26.
  • the drive 29 is acted upon by compressed air via the line 31 and the valve rod 28 with the valve plate 27 moved upward, so that the valve opening 26 is opened and the mass due of the constant pressure is pressed into the vessel 38 at a constant filling rate.
  • the pressure of the mass would drop by itself.
  • the control unit 15 sends a corresponding signal to the solenoid valve 30 for closing the filling valve 24.
  • the valve drive 29 is thus acted upon via the line 32 from above with compressed air, so that the valve opening 26 is closed again by means of the valve plate 27.
  • the filled vessel 38 is removed and replaced with another vessel 38 to be filled. As such, during the time the filling valve 24 is closed, the pressure of the mass would increase throughout the system.
  • the pressure piston 4 is moved upward during this time so that the mass coming from the static mixer 17 is received in the buffer space 16 and at the same time the pressure of the mass is kept constant throughout the system. in such a way that the actual value of the pressure is equal to its desired value.

Abstract

The system has a filling valve (24) adjacent to a flow measuring device (23) for filling masses in a cylindrical container (38). A control unit (15) receives measuring signals reproducing an actual value of the volume of the masses that flows through the measuring device. The control unit compares the actual value with a predefined target value of the volume of the filled mass. The control unit generates and outputs control signals to a filling-unit (22) for closing the filling valve.

Description

Die Erfindung betrifft eine Abfüll-Anlage für fließfähige Massen, insbesondere für mittel- bis hochviskose Massen, nach dem Oberbegriff des Anspruches 1.The invention relates to a filling plant for flowable compositions, in particular for medium to high viscosity compositions, according to the preamble of claim 1.

Eine derartige aus der US 5,462,199 A bekannte Abfüll-Anlage weist einen hohen konstruktiven Aufwand auf. Sowohl die Dosiergenauigkeit als auch die Dosiergeschwindigkeit können hierbei zufriedenstellend sein; es tritt aber ein hoher Reinigungsaufwand bei einer Rezeptur-Umstellung, also einem Wechsel der abzufüllenden Massen, auf.Such from the US 5,462,199 A known filling plant has a high design cost. Both the dosing accuracy and the dosing speed can be satisfactory here; but there is a high cleaning effort in a recipe conversion, so a change in the masses to be filled, on.

Aus der DE 103 08 736 A1 ist eine Abfüll-Anlage für fließfähige Massen bekannt, bei der die abzufüllenden Massen durch eine Förderleitung mittels einer Pumpe gefördert werden. In der Förder-Leitung ist ein Druckspeicher für die abzufüllenden Masse abgeordnet, in dem die abzufüllende Masse unmittelbar mit Druckluft beaufschlagt und damit unter einem vorgegebenen Druck gehalten wird. Der Druck der Druckluft kann über ein Druckregelventil verändert werden, das mit einer Steuervorrichtung verbunden ist. Dem Druckspeicher sind weiterhin Füllstand-Mess-Sensoren zugeordnet, mit denen der Füllstand im Druckspeicher erfasst wird. In der Förder-Leitung ist ein Durchfluss-Messgerät zum Messen eines Ist-Wertes der durch das Durchflussmessgerät fließenden Menge an abzufüllender Masse angeordnet. Dem Durchfluss-Messgerät ist ein Füll-Ventil zum Abfüllen der Masse in jeweils dosierter Menge in Tuben oder dergleichen nachgeordnet. Weiterhin ist eine Steuer-Einheit vorgesehen, die zur Aufnahme von dem jeweiligen Ist-Wert der Menge der durch das Durchflussfließenden abzufüllenden Masse wiedergebenden Mess-Signal ausgebildet ist. Die Steuer-Einheit ist zum fortlaufenden Vergleich dieser Ist-Werte mit einem vorgegebenen Soll-Wert der jeweiligen Menge der abzufüllenden Masse und zur Erzeugung und Abgabe eines Steuersignals an die Abfüll-Einrichtung zum Schließen des Füll-Ventils ausgebildet.From the DE 103 08 736 A1 is a filling system for flowable materials known in which the masses to be filled are conveyed by a delivery line by means of a pump. In the delivery line a pressure accumulator for the mass to be filled is seconded, in which the mass to be filled is applied directly with compressed air and thus kept under a predetermined pressure. The pressure of the compressed air can be changed via a pressure control valve which is connected to a control device. The accumulator continue to fill level sensors associated with which the level is detected in the pressure accumulator. A flow meter is arranged in the delivery line for measuring an actual value of the quantity of mass to be filled flowing through the flow meter. The flow meter is a filling valve for filling the mass in each metered amount in tubes or the like arranged downstream. Furthermore, a control unit is provided, which is for receiving from the respective actual value of the amount flowing through the flow is formed to be filled mass reproducing measurement signal. The control unit is designed to continuously compare these actual values with a predetermined desired value of the respective quantity of the mass to be filled and to generate and deliver a control signal to the filling device for closing the filling valve.

Aus der DE 39 29 08 A1 ist es bekannt, in einer Vorrichtung zum stetigen Fördern von zwei pastösen Komponenten eines Zweikomponenten-Klebstoffes einen Statik-Mischer zum Vermischen dieser Komponenten vorzusehen.From the DE 39 29 08 A1 It is known to provide a static mixer for mixing these components in a device for continuously conveying two pasty components of a two-component adhesive.

Aus der DE 199 17 441 A1 ist eine Vorrichtung zum Dosieren und Abfüllen einer Flüssigkeit in Verpackungs-Behälter bekannt, bei der ein Drucksensor zur Erfassung des Flüssigkeitsdrucks vorgesehen ist, der mit einer Steuereinrichtung verbunden ist. Die hierüber erreichbare Druck-Konstanz dient zur Kompensation von unterschiedlichen Füllhöhen in einem Vorratsbehälter.From the DE 199 17 441 A1 a device for metering and filling a liquid in packaging container is known, in which a pressure sensor for detecting the fluid pressure is provided, which is connected to a control device. The achievable pressure consistency over this serves to compensate for different levels in a reservoir.

Aus der WO 89/10206 A1 ist eine Vorrichtung zum Abgeben hochviskoser, pastöser Substanzen bekannt, die einen Puffer-Behälter aufweist, wobei Maßnahmen getroffen sind, dass der Druck in der Förder-Leitung konstant bleibt.From the WO 89/10206 A1 a device for dispensing high-viscosity, pasty substances is known, which has a buffer container, measures being taken to ensure that the pressure in the delivery line remains constant.

Der Erfindung liegt daher die Aufgabe zugrunde, eine Abfüll-Anlage der allgemeinen Gattung zu schaffen, die bei Rezeptur-Umstellung nur einen geringen Reinigungsaufwand erfordert, die aber sowohl eine hohe DosierGenauigkeit als auch eine hohe Abfüll-Geschwindigkeit ermöglicht.The invention is therefore an object of the invention to provide a filling system of the general category, which requires only a small cleaning effort in recipe conversion, but which allows both a high DosierGenauigkeit and a high filling speed.

Diese Aufgabe wird erfindungsgemäß durch die Merkmale im Anspruch 1 gelöst. Kern der Erfindung ist die Puffer-Einrichtung, mittels derer die Masse ständig unter konstantem Druck gehalten wird. Dies ermöglicht es, eine besonders einfache und genaue Dosierung in der eigentlichen Abfüll-Einrichtung vorzunehmen, die lediglich aus einem volumetrisch oder gegebenenfalls auch gravimetrisch, bevorzugt aber volumetrisch arbeitenden Durchfluss-Messgerät und einem nachgeordneten Füll-Ventil besteht, das nicht als eigentliches Dosier-Ventil, beispielsweise Kolben-Dosier-Ventil ausgestaltet sein muss. Diese Ausgestaltung führt dazu, dass bei einer Rezeptur-Umstellung sehr schnell eine Reinigung der Abfüll-Anlage durch die nachfolgende neue Masse bewirkt wird. Die Konstanthaltung des Drucks der Masse in der gesamten Abfüll-Anlage einschließlich des vorgeordneten Mischers ermöglicht insbesondere bei Einsatz eines Statik-Mischers auch ein optimales Mischergebnis im Statik-Mischer. Insbesondere wenn das Füll-Ventil direkt hinter dem Durchfluss-Messgerät angeordnet ist, wird die Ansteuergenauigkeit des Füll-Ventils besonders hoch. Da das Füll-Ventil nur als Auf Zu-Ventil ausgebildet ist, ist es auch nachlauffrei, wodurch die Dosiergenauigkeit sehr hoch wird. Wegen der Nachlauffreiheit können auch die Taktzeiten minimiert werden.This object is achieved by the features in claim 1. Core of the invention is the buffer means by which the mass is constantly kept under constant pressure. This makes it possible to carry out a particularly simple and accurate dosing in the actual filling device, which consists only of a volumetric or optionally also gravimetric, but preferably volumetric flow meter and a downstream filling valve, not as the actual metering valve , For example, piston metering valve must be configured. This refinement means that cleaning of the filling system is very quickly effected by the subsequent new mass during a formulation changeover. The constant maintenance of the pressure of the mass in the entire filling plant including the upstream mixer allows, in particular when using a static mixer and an optimal mixing result in the static mixer. In particular, when the filling valve is arranged directly behind the flow meter, the driving accuracy of the filling valve is particularly high. Since the filling valve is designed only as open-to-valve, it is also free of clogging, whereby the dosing accuracy is very high. Because of the tracking freedom and the cycle times can be minimized.

Weitere Merkmale, Vorteile und Einzelheiten der Erfindung ergeben sich aus der nachfolgenden Beschreibung eines Ausführungsbeispiels anhand der Zeichnung. Es zeigt

Fig. 1a
einen ersten Teil einer erfindungsgemäßen Abfüll-Anlage und
Fig. 1b
den zweiten Teil der erfindungsgemäßen Abfüll-Anlage.
Further features, advantages and details of the invention will become apparent from the following description of an embodiment with reference to the drawing. It shows
Fig. 1a
a first part of a filling plant according to the invention and
Fig. 1b
the second part of the filling plant according to the invention.

Wie aus den zusammengehörenden Fig. 1a und 1b erkennbar ist, ist auf einem Gestell 1 ein als Puffer-Zylinder 2 ausgebildetes Puffer-Gehäuse mit vertikaler Mittel-Längs-Achse einer Puffer-Einrichtung 3 angeordnet, in dem ein Druck-Kolben 4 in Richtung der Mittel-Längs-Achse verschiebbar und gegenüber dem Zylinder 2 abgedichtet geführt ist. Oberhalb des Puffer-Zylinders 2 ist ein Linearantrieb in Form eines hydraulisch beaufschlagbaren Kolben-Zylinder-Antriebs 5 angeordnet, in dessen Hydraulik-Zylinder 6 ein beidseitig beaufschlagbarer Kolben 7 angeordnet ist. Dessen Kolbenstange 8 ist in Richtung der Mittel-Längs-Achse mit dem Druck-Kolben 4 verbunden. Beiderseits des Kolbens 7 münden in den Hydraulik-Raum 9 des Hydraulik-Zylinders 6 Hydraulik-Leitungen 10, 11 ein, die an einem als Magnetventil ausgebildeten Proportional-Ventils 12 beginnen. In dieses Ventil 12 mündet eine von einer nicht dargestellten Hydraulik-Druckquelle kommende Zuführ-Leitung 13 und eine AbführLeitung 14 ein. Das Ventil 12 wird von einer zentralen Steuer-Einheit 15 angesteuert.Like from the belonging together Fig. 1a and 1b can be seen, is arranged on a frame 1 designed as a buffer cylinder 2 buffer housing with a vertical center-longitudinal axis of a buffer device 3, in which a pressure piston 4 in the direction of the central longitudinal axis displaceable and opposite the cylinder 2 is guided sealed. Above the buffer cylinder 2, a linear drive in the form of a hydraulically actuated piston-cylinder drive 5 is arranged in the hydraulic cylinder 6, a piston 7 is acted upon on both sides. Its piston rod 8 is connected in the direction of the central longitudinal axis with the pressure piston 4. On both sides of the piston 7 open into the hydraulic chamber 9 of the hydraulic cylinder 6 hydraulic lines 10, 11, which begin at a formed as a solenoid valve proportional valve 12. In this valve 12 opens a coming from a hydraulic pressure source, not shown feed line 13 and a discharge line 14 a. The valve 12 is driven by a central control unit 15.

In den unterhalb des Druck-Kolbens 4 befindlichen Puffer-Raum 16 des Puffer-Zylinders 2 mündet ein Statik-Mischer 17 ein, durch den eine vorgemischte Masse, beispielsweise Körperpflege-Creme, zugeführt wird. Die einzelnen Komponenten der Masse werden dem Statik-Mischer 17 in der Praxis üblicher Weise zugeführt und insgesamt mittels einer nicht dargestellten Pumpe durch den Mischer 17 mehr oder weniger pulsierend gefördert und hierbei durch die in üblicher Weise ausgestalteten Mischer-Einbauten 18 intensiv gemischt.In the buffer space 16 of the buffer cylinder 2 situated below the pressure piston 4, a static mixer 17 opens, through which a premixed mass, for example body care cream, is supplied. The individual components of the mass are supplied to the static mixer 17 in practice usual way and promoted more or less pulsating by a mixer, not shown, by the mixer 17 and this intensively mixed by the designed in the usual way mixer internals 18.

In Förder-Richtung 19 des Statik-Mischers 17 gesehen hinter dem Statik-Mischer 17 mündet aus diesem eine Förder-Leitung 20 aus, in die der Puffer-Raum 16 von oben einmündet. Unmittelbar hinter dem Puffer-Zylinder 2 ist in der Förder-Leitung 20 ein Druck-Messgeber 21 in Form einer Druckmessdose angeordnet, mittels dessen der Druck der Masse gemessen wird, die durch den Statik-Mischer 17 in die Förder-Leitung 20 und gegebenenfalls den Puffer-Raum 16 gefördert wird. Ein dem Ist-Wert dieses Drucks entsprechendes Signal wird ebenfalls zu der Steuer-Einheit 15 übermittelt.In the conveying direction 19 of the static mixer 17 seen behind the static mixer 17 opens from this a delivery line 20, in which the buffer space 16 opens from above. Immediately behind the buffer cylinder 2, a pressure transducer 21 is arranged in the form of a pressure cell in the delivery line 20, by means of which the pressure of the mass is measured by the static mixer 17 in the delivery line 20 and optionally the Buffer room 16 is promoted. A signal corresponding to the actual value of this pressure is likewise transmitted to the control unit 15.

Am Ende der Förder-Leitung 20 ist die eigentliche Abfüll-Einrichtung 22 vorgesehen. Diese besteht im Wesentlichen aus einem in der Förder-Leitung 20 angeordneten Durchfluss-Messgerät 23 und einem diesem unmittelbar nachgeordneten Füll-Ventil 24. Das Durchfluss-Messgerät 23 gibt dem jeweiligen Ist-Wert des Durchflusses entsprechende - in der Regel digitale - Signale auf die Steuer-Einheit 15. Das Füll-Ventil 24 weist ein nach unten ragendes Füll-Rohr 25 auf, dessen untere Ventil-Öffnung 26 mittels eines Ventil-Tellers 27 verschlossen ist bzw. geöffnet werden kann. Der Ventil-Teller 27 wird in üblicher Weise durch eine das Füll-Rohr 25 nach oben durchsetzende Ventil-Stange 28 betätigt, die mittels eines Ventil-Antriebs 29 linear betätigbar ist. Hierbei handelt es sich um einen pneumatisch beaufschlagbaren Kolben-Zylinder-Antrieb. Dieser wird von einer nicht dargestellten Druckluftquelle mit Druckluft beaufschlagt. Die Steuerung erfolgt über ein Magnet-Ventil 30 und zwei diese mit dem Antrieb 29 verbindende Leitungen 31, 32. Die Ansteuerung des Magnet-Ventils 30, d. h. dessen Betätigung, erfolgt von der Steuer-Einheit 15. Das Füll-Ventil 24 ist in Fig. 1b in geschlossener Stellung dargestellt. Wenn über das Magnet-Ventil 30 die Leitung 31 mit Druckluft beaufschlagt wird, wird die Ventil-Stange 28 mit dem Ventil-Teller 27 angehoben, so dass die Ventil-Öffnung 26 geöffnet wird. Wird dagegen der Ventil-Antrieb 29 über die Leitung 32 mit Druckluft beaufschlagt, dann wird die Ventil-Stange 28 mit dem Ventil-Teller 27 nach unten gedrückt und damit die Ventil-Öffnung 26 geschlossen.At the end of the delivery line 20, the actual filling device 22 is provided. This consists essentially of a arranged in the delivery line 20 flow meter 23 and this immediately downstream filling valve 24. The flow meter 23 is the respective actual value of the flow corresponding - usually digital - on the signals Control unit 15. The filling valve 24 has a downwardly projecting filling tube 25, the lower valve opening 26 is closed by a valve plate 27 and can be opened. The valve plate 27 is actuated in a conventional manner by a filling tube 25 upwardly passing valve rod 28 which is linearly actuated by means of a valve actuator 29. This is a pneumatically actuated piston-cylinder drive. This is acted upon by a compressed air source, not shown, with compressed air. The control is carried out via a solenoid valve 30 and two connecting them to the drive 29 lines 31, 32. The control of the solenoid valve 30, ie its operation, is carried out by the control unit 15. The filling valve 24 is in Fig. 1b shown in closed position. When the line 31 is pressurized with air via the solenoid valve 30, the valve rod 28 is lifted with the valve plate 27, so that the valve port 26 is opened. If, in contrast, the valve drive 29 is acted upon by the compressed air via the line 32, then the valve rod 28 becomes pressed down with the valve plate 27 and thus the valve opening 26 is closed.

Selbstverständlich können hinter der Puffer-Einrichtung 3 auch mehrere Abfüll-Einrichtungen 22 vorgesehen sein. Dies ist durch eine Abzweig-Förder-Leitung 33 angedeutet, die hinter dem Druck-Messgeber 21 aus der Förder-Leitung 20 abzweigt. Wie sich aus der Zeichnung ergibt, sind in dieser Abzweig-Förder-Leitung 33 und der Förder-Leitung 20 Statik-Misch-Einsätze 34 angeordnet, mittels derer bewirkt wird, dass bei einer Rezeptur-Umstellung aufgrund starker Turbulenz in der Strömung ein starker Reinigungseffekt eintritt.Of course, a plurality of filling devices 22 may also be provided behind the buffer device 3. This is indicated by a branch conveying line 33, which branches off from the delivery line 20 behind the pressure sensor 21. As is apparent from the drawing, static mixing inserts 34 are arranged in this branch conveying line 33 and the conveying line 20, by means of which causes a strong cleaning effect in a recipe conversion due to strong turbulence in the flow entry.

Wie aus Fig. 1a erkennbar ist, hat der Druck-Kolben 4 eine dem Puffer-Raum 16 und der Förder-Leitung 20 zugewandte Oberfläche 35 in Form eines sich nach unten verjüngenden Kegelstumpfes. Dieser Oberfläche 35 entspricht eine Anlage-Fläche 36 im Boden 37 des Puffer-Zylinders 2. Wie Fig. 1a erkennen lässt, kann durch diese Ausgestaltung der Puffer-Raum 16 rückstandsfrei in die Förder-Leitung 20 entleert werden, wenn der Druck-Kolben 4 aus der in Fig. 1a dargestellten oberen Position in die ebenfalls dargestellte unterste Position verfahren wird.How out Fig. 1a can be seen, the pressure piston 4 has a buffer space 16 and the conveying line 20 facing surface 35 in the form of a downwardly tapering truncated cone. This surface 35 corresponds to a contact surface 36 in the bottom 37 of the buffer cylinder 2. Like Fig. 1a can recognize, can be emptied residue-free into the delivery line 20 by this configuration, the buffer space 16 when the pressure piston 4 from the in Fig. 1a shown upper position in the bottom position also shown is moved.

Die Abfüll-Anlage arbeitet wie folgt:The filling system works as follows:

Wie bereits erwähnt, wird der Puffer-Einrichtung 3 vom Statik-Mischer 17 eine vorgemischte abzufüllende Masse zugeführt. Der Druck-Messgeber 21 erfasst ständig den Ist-Wert des Drucks, mit dem diese Masse beaufschlagt ist und gibt die entsprechenden Signale auf die Steuer-Einheit 15. Von dort wird bei Abweichungen von einem vorgegebenen Soll-Wert des Drucks das Proportional-Ventil 12 derartig angesteuert, dass bei einer Abweichung des Ist-Wertes des Drucks nach unten, also bei einem Druckabfall in der Masse, der Kolben 7 über die Leitung 10 von oben mit Druckflüssigkeit beaufschlagt wird, so dass der Druck-Kolben 4 nach unten verfahren wird, so dass wiederum die unterhalb des Druck-Kolbens 4 im Puffer-Raum 16 befindliche Masse mit höherem Druck beaufschlagt wird. Es sei hinzugefügt, dass die vom Statik-Mischer 17 her zur Abfüll-Einrichtung 22 geförderte Masse ständig gegen den Druck-Kolben 4 ansteht. Ist dagegen der Ist-Wert des Drucks der Masse etwas höher als der vorgegebene Soll-Wert, dann wird das Proportional-Ventil 12 derartig geschaltet, dass Druckflüssigkeit durch die Leitung 11 von unten in den Hydraulik-Raum 9 gedrückt wird, so dass der Kolben 7 mitsamt der Kolbenstange 8 nach oben verfahren wird. Der Druck-Kolben 4 folgt dem, so dass die unterhalb des Druck-Kolbens 4 im Puffer-Raum 16 befindliche Masse vom Druck entlastet wird. Durch die geschilderte Konstant-Regelung des Drucks der Masse steht somit ein konstanter Druck der Masse gegen den Statik-Mischer 17 und auch an der Ventil-Öffnung 26 an. Durch die Konstanthaltung des Drucks im Statik-Mischer 17 wird außerdem die Misch-Qualität des Statik-Mischers 17 optimiert.As already mentioned, the buffer device 3 is fed by the static mixer 17 with a premixed mass to be filled. The pressure sensor 21 constantly detects the actual value of the pressure with which this mass is applied and outputs the corresponding signals to the control unit 15. From there, in case of deviations from a predetermined desired value of the pressure, the proportional valve 12th driven in such a way that at a deviation the actual value of the pressure down, so at a pressure drop in the mass, the piston 7 is pressurized via line 10 from above with hydraulic fluid, so that the pressure piston 4 is moved down, so that in turn below the pressure Piston 4 located in the buffer space 16 mass is subjected to higher pressure. It should be added that the mass conveyed from the static mixer 17 to the filling device 22 is constantly present against the pressure piston 4. If, however, the actual value of the pressure of the mass is slightly higher than the predetermined desired value, then the proportional valve 12 is switched such that pressure fluid is forced through the line 11 from below into the hydraulic chamber 9, so that the piston 7 is moved together with the piston rod 8 upwards. The pressure piston 4 follows, so that the mass located below the pressure piston 4 in the buffer space 16 is relieved of pressure. By the described constant control of the pressure of the mass is thus a constant pressure of the mass against the static mixer 17 and also at the valve opening 26 at. By keeping constant the pressure in the static mixer 17 also the mixing quality of the static mixer 17 is optimized.

An dem Füll-Ventil 24 werden in der Regel relativ kleine im Wesentlichen zylindrische Gefäße38, beispielsweise kleine Kartuschen oder Tuben, mit der erwähnten Masse gefüllt. Hierzu werden diese Gefäße 38von unten weitgehend auf das Füll-Rohr 25 aufgeschoben. Der Füll-Vorgang wird von der Steuer-Einheit 15 durch ein entsprechendes Signal auf das Magnet-Ventil 30 ausgelöst. Ein solches Signal wird dann abgegeben, wenn das zu füllende Gefäß 38 sich in der Befüllungsstellung vor der Ventil-Öffnung 26 befindet. Daraufhin wird über die Leitung 31 der Antrieb 29 mit Druckluft beaufschlagt und die Ventil-Stange 28 mit dem Ventil-Teller 27 nach oben verfahren, so dass die Ventil-Öffnung 26 geöffnet wird und die Masse aufgrund des konstanten Drucks mit konstanter Füllgeschwindigkeit in das Gefäß 38 gedrückt wird. Während dieses Füllvorgangs würde an sich der Druck der Masse abfallen. Aufgrund der geschilderten Konstant-Regelung des Druckes wird während dieser Zeit der Druck-Kolben 4 von oben nach unten so nachgeführt, dass der Druck in dem gesamten System konstant bleibt. Wenn über das Durchfluss-Messgerät 23 entweder volumetrisch oder gravimetrisch einen Soll-Wert der Menge der in das Gefäß 38 zu fördernden Masse ermittelt wird, kommt von der Steuer-Einheit 15 ein entsprechendes Signal an das Magnet-Ventil 30 zum Schließen des Füll-Ventils 24. Der Ventil-Antrieb 29 wird also über die Leitung 32 von oben mit Druckluft beaufschlagt, so dass die Ventil-Öffnung 26 wieder mittels des Ventil-Tellers 27 verschlossen wird. Das gefüllte Gefäß 38 wird entfernt und durch ein weiteres zu füllendes Gefäß 38 ersetzt. Während der Zeit, während der das Füll-Ventil 24 geschlossen ist, würde an sich der Druck der Masse im gesamten System steigen. Aufgrund der geschilderten Konstant-Regelung wird während dieser Zeit der Druck-Kolben 4 so nach oben verfahren, dass die vom Statik-Mischer 17 kommende Masse im Puffer-Raum 16 aufgenommen wird und gleichzeitig der Druck der Masse im gesamten System weiterhin konstant gehalten wird, und zwar so, dass der Ist-Wert des Druckes gleich seinem Soll-Wert ist.At the filling valve 24 are usually relatively small substantially cylindrical vessels 38, such as small cartridges or tubes, filled with the mentioned mass. For this purpose, these vessels 38 are largely pushed onto the filling tube 25 from below. The filling process is triggered by the control unit 15 by a corresponding signal to the solenoid valve 30. Such a signal is emitted when the vessel 38 to be filled is in the filling position in front of the valve opening 26. Then, the drive 29 is acted upon by compressed air via the line 31 and the valve rod 28 with the valve plate 27 moved upward, so that the valve opening 26 is opened and the mass due of the constant pressure is pressed into the vessel 38 at a constant filling rate. During this filling process, the pressure of the mass would drop by itself. Due to the described constant control of the pressure of the pressure piston 4 is tracked from top to bottom during this time so that the pressure in the entire system remains constant. When either a volumetric or a gravimetric determination of the target quantity of the mass to be conveyed into the vessel 38 is made via the flow meter 23, the control unit 15 sends a corresponding signal to the solenoid valve 30 for closing the filling valve 24. The valve drive 29 is thus acted upon via the line 32 from above with compressed air, so that the valve opening 26 is closed again by means of the valve plate 27. The filled vessel 38 is removed and replaced with another vessel 38 to be filled. As such, during the time the filling valve 24 is closed, the pressure of the mass would increase throughout the system. Due to the described constant control, the pressure piston 4 is moved upward during this time so that the mass coming from the static mixer 17 is received in the buffer space 16 and at the same time the pressure of the mass is kept constant throughout the system. in such a way that the actual value of the pressure is equal to its desired value.

Claims (7)

  1. Filling installation for free-flowing substances, the filling installation comprising
    - a conveyor line (20);
    -- through which substances to be filled are conveyable in a direction of conveyance (19);
    - a buffer device (3)
    -- which comprises a buffer cylinder (2) with a pressure piston (4) comprising a surface (35) facing the conveyor line (20); and
    -- which comprises a pressure generation device in the form of a linear drive acting upon the pressure piston (4), with a pressure being applicable on the substance by means of said pressure generation device;
    - a pressure transducer (21) arranged in the conveyor line (20) for detecting an actual value of the pressure of the substance;
    - a flow meter (23) for measuring an actual value of the amount of substance to be filled which is flowing through the flow meter (23);
    - a filling valve (24) arranged downstream of the flow meter (23) for filling an in each case controlled dose of the substance into receptacles (38); and
    - a control unit (15)
    -- which is configured for receiving measuring signals of the pressure transducer (21) reflecting the respective actual value of the pressure of the substance, for continuously comparing these respective actual values with a predetermined desired value of the pressure of the substance, and for generating and transmitting control signals to the linear drive for generating a predetermined actual value of the pressure of the substance, said actual value corresponding to the desired value; and
    -- which is configured for receiving measuring signals reflecting the respective actual value of the amount of the substance to be filled which is flowing through the flow meter (23), for continuously comparing these actual values with a predetermined desired value of the respective amount of the substance to be filled, and for generating and transmitting a control signal to the filling device (22) for closing the filling valve (24);
    characterized in
    that a static mixer (17) opens into the conveyor line (20) upstream of the buffer device (3) when seen in the direction of conveyance (19); that the shape of the surface (35) of the pressure piston (4) facing the conveyor line (20) corresponds to that of a contact surface (36) at the transition to the conveyor line (20); and
    that the buffer device (3) comprises a buffer space (16) in the buffer cylinder (20), said buffer space (16) being connected to the static mixer (17) via the conveyor line (20), with the substances to be filled being conveyable against the pressure piston (4).
  2. Filling installation according to claim 1, characterized in
    that the linear drive is a piston cylinder drive (5) which is hydraulically pressurizable on two sides.
  3. Filling installation according to claim 2, characterized in
    that the piston cylinder drive (5) is pressurizable by means of a hydraulic liquid via a proportional valve (12) which is actuable by the control unit (15).
  4. Filling installation according to one of claims 1 to 3, characterized in that the flow meter (23) is arranged immediately in front of the filling valve (24).
  5. Filling installation according to one of claims 1 to 4, characterized in that the filling valve (24) comprises a filling tube (25) with a valve opening (26) on one end, the valve opening (26) being openable and closable by means of a valve disk (27).
  6. Filling installation according to claim 5, characterized in
    that the valve disk (27) is operable by means of a valve drive (29) which is a pneumatically pressurizable piston cylinder drive.
  7. Filling installation according to claim 6, characterized in
    that the valve drive (29) is operable by means of a magnetic valve (30) which is actuable by the control unit (15).
EP07014460A 2006-08-04 2007-07-24 Filling facility for flowable masses Not-in-force EP1884466B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102006036478A DE102006036478A1 (en) 2006-08-04 2006-08-04 Filling plant for flowable materials

Publications (2)

Publication Number Publication Date
EP1884466A1 EP1884466A1 (en) 2008-02-06
EP1884466B1 true EP1884466B1 (en) 2009-06-10

Family

ID=38657459

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07014460A Not-in-force EP1884466B1 (en) 2006-08-04 2007-07-24 Filling facility for flowable masses

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EP (1) EP1884466B1 (en)
AT (1) ATE433413T1 (en)
DE (2) DE102006036478A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009013080A1 (en) * 2009-03-13 2010-09-23 Benz & Hilgers Gmbh Method for packaging portioned pasty product i.e. emulsion, involves portioning product in pasty condition, and homogenizing directly product in pasty condition before transferring product into packaging and after portioning product
CN102649482A (en) * 2012-04-07 2012-08-29 浙江炜驰轻工机械有限公司 Particle valve of particle filling machine

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE566322C (en) * 1931-07-08 1932-12-15 Walter Henke Filling machine with automatic control
DE1163727B (en) * 1960-12-06 1964-02-20 Wilhelm Waldherr Device for filling containers, in particular tubes
WO1989010206A1 (en) * 1988-04-20 1989-11-02 Lenhardt Maschinenbau Gmbh Device for dispensing high-viscosity pasty compressible substances
DE3929608A1 (en) * 1988-09-06 1990-03-15 Lenhardt Maschinenbau Prodn. of adhesive for glass plates - by pumping e.g. resin and hardener from tanks to intermediate containers and then to mixer by synchronised pumps to hold proportions
DE19917441C2 (en) * 1999-04-17 2001-10-11 Bosch Gmbh Robert Device for dosing and filling a liquid into packaging containers
DE20103988U1 (en) * 2001-03-07 2001-07-12 Seaquist Perfect Dispensing Filling head for filling containers with a fluid medium
DE10308736A1 (en) * 2003-02-28 2004-09-09 Iwk Verpackungstechnik Gmbh Tube filling machine for filling tube with paste material has mass flow sensor arranged in product line and connected via mass signal line to controller to which it sends throughflow signal

Also Published As

Publication number Publication date
DE502007000848D1 (en) 2009-07-23
DE102006036478A1 (en) 2008-02-07
EP1884466A1 (en) 2008-02-06
ATE433413T1 (en) 2009-06-15

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