EP0658511B1 - Système pour remplir des bouteilles, des boîtes ou des récipients similaires avec un produit liquide - Google Patents

Système pour remplir des bouteilles, des boîtes ou des récipients similaires avec un produit liquide Download PDF

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Publication number
EP0658511B1
EP0658511B1 EP94119475A EP94119475A EP0658511B1 EP 0658511 B1 EP0658511 B1 EP 0658511B1 EP 94119475 A EP94119475 A EP 94119475A EP 94119475 A EP94119475 A EP 94119475A EP 0658511 B1 EP0658511 B1 EP 0658511B1
Authority
EP
European Patent Office
Prior art keywords
electrode
filling
probe
voltage
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.)
Expired - Lifetime
Application number
EP94119475A
Other languages
German (de)
English (en)
Other versions
EP0658511A1 (fr
Inventor
Ludwig Clüsserath
Manfred Härtel
Dieter Krulitsch
Karl Lorenz
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 Maschinen und Anlagenbau AG
Original Assignee
KHS Maschinen und Anlagenbau AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by KHS Maschinen und Anlagenbau AG filed Critical KHS Maschinen und Anlagenbau AG
Publication of EP0658511A1 publication Critical patent/EP0658511A1/fr
Application granted granted Critical
Publication of EP0658511B1 publication Critical patent/EP0658511B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B67—OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
    • B67C—CLEANING, FILLING WITH LIQUIDS OR SEMILIQUIDS, OR EMPTYING, OF BOTTLES, JARS, CANS, CASKS, BARRELS, OR SIMILAR CONTAINERS, NOT OTHERWISE PROVIDED FOR; FUNNELS
    • B67C3/00—Bottling liquids or semiliquids; Filling jars or cans with liquids or semiliquids using bottling or like apparatus; Filling casks or barrels with liquids or semiliquids
    • B67C3/02—Bottling liquids or semiliquids; Filling jars or cans with liquids or semiliquids using bottling or like apparatus
    • B67C3/22—Details
    • B67C3/28—Flow-control devices, e.g. using valves
    • B67C3/282—Flow-control devices, e.g. using valves related to filling level control
    • B67C3/285—Flow-control devices, e.g. using valves related to filling level control using liquid contact sensing means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B67—OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
    • B67C—CLEANING, FILLING WITH LIQUIDS OR SEMILIQUIDS, OR EMPTYING, OF BOTTLES, JARS, CANS, CASKS, BARRELS, OR SIMILAR CONTAINERS, NOT OTHERWISE PROVIDED FOR; FUNNELS
    • B67C3/00—Bottling liquids or semiliquids; Filling jars or cans with liquids or semiliquids using bottling or like apparatus; Filling casks or barrels with liquids or semiliquids
    • B67C3/02—Bottling liquids or semiliquids; Filling jars or cans with liquids or semiliquids using bottling or like apparatus
    • B67C3/22—Details
    • B67C3/26—Filling-heads; Means for engaging filling-heads with bottle necks
    • B67C2003/2685—Details of probes

Definitions

  • the invention relates to a system according to the preamble of claim 1.
  • the axially displaceable probe forms with a lower first probe section, i. H. with a lower probe tip a first electrode and with an overlying probe section, namely with the actual probe body a second electrode, which is electrically or galvanically separated from the first electrode by a third probe section designed as an insulator.
  • the probe When filling a container, the probe extends with the electrode path formed between the first and second electrodes to a level in the container to be filled which corresponds to the response fill level, i.e. the level at which a probe signal causing the closing of the liquid valve is to be generated.
  • the probe is connected to the control and evaluation electronics via a possibly two-wire measuring line, of which the first wire is connected to the first electrode and the second wire to the second electrode.
  • the object of the invention is to demonstrate a system in which, while maintaining a simple design of the probe, in particular also with regard to the electrical connections, and while maintaining a simple electrical connection between the probe and the control and evaluation electronics, a probe signal preceding the response level is possible.
  • the probe assumes a low-resistance state at a preliminary filling level before reaching the response filling level, which state differs from the low-resistance state when the response filling level is reached and is determined by the electrical resistance of the liquid filling material on the electrode path which is between the first Electrode and the third electrode are formed.
  • both electrode paths form an electrode path arrangement in which these electrode paths are connected in parallel and are also parallel to the input of the control and evaluation electronics, and in addition the third electrode is arranged in such a way that it is constantly and already at the beginning of the filling phase in the liquid path of the filling material flowing into the container, the state of the probe corresponding to the provisional filling height is reached when the liquid electrode in the container is occupied by the first electrode or the first probe section forming this electrode.
  • the third electrode which is preferably formed by a return gas tube surrounding the probe, is located at a clear distance above the second electrode or the response range of this electrode. This return gas tube is then preferably designed such that it also extends into this container when a container is being filled, but with a much shorter length than the probe.
  • control signal which is derived from the state of the probe corresponding to the provisional filling level
  • functions can be controlled, for example a filling pause or temporary interruption of the filling process or a reduction in the filling speed, etc.
  • a 1 is a filling element which is provided in a large number of further filling elements on a rotating part or rotor of a filling machine for filling bottles 2 with a liquid filling material.
  • the filling element 1 consists essentially of a housing 3 with the usual liquid channel 4, in which the liquid valve 5 is provided and which on the underside of the housing 3 forms the discharge opening 7 enclosing a return gas pipe 6, via which the liquid filling material is opened when the liquid valve 5 is open flows in the sealing position with the filling element or with a sealing element 8 arranged bottle 2.
  • the return gas pipe 6 is provided on a valve body 9 of the liquid valve 5, which (valve body) can be moved together with the return gas pipe 6 between a raised open position and a lowered closed position in the direction of the vertical filling element axis FA.
  • An electrical probe 10 which determines the filling level, is arranged in the return gas tube 6, coaxially with the filling element axis FA, and extends over the lower, open end of the return gas tube 6 protrudes.
  • the return gas duct is formed between the outside surface of this probe and the inside surface of the return gas tube 6.
  • the rod-shaped probe 10 which in the embodiment shown has a constant circular cylindrical outer cross section over its entire length, has a lower, the lower end or the probe tip forming probe section 11 which has a predetermined axial length in the direction of the axis FA and an exposed surface on its outer surface forms electrically conductive surface or electrode E1.
  • the probe section 11 is adjoined at the top by a probe section 12 which is designed as an insulator and which electrically separates the section 11 from a rod-shaped section 13 which adjoins the upper side of the section 12 and which makes up most of the length of the probe 10, i.e. forms the actual probe body and is in turn formed on its outer surface as an exposed, electrically conductive electrode E2.
  • the probe section 13 projects beyond the open underside of the return gas tube 6 and also extends through the return gas tube in the interior of the filling element 1 to an upper region of this filling element, on which the electrical connections for the probe 10, which are not shown in FIGS. 1-3, are also provided are.
  • the return gas tube 6 also forms an exposed electrode E3 at least at its lower, open end.
  • the return gas tube 6 is made entirely of an electrically conductive material (metal) for this purpose.
  • FIG. 4 shows the block diagram of the circuit arrangement or probe control having the probe. As shown, the return gas tube 6 and the probe section 13 or the electrodes formed by these elements are each connected to the electrical ground of the filling machine, to which (ground) also a connection of a measuring voltage source 14 an evaluation and measuring electronics 15 is connected.
  • the voltage source 14 supplying a constant measuring voltage is a fixed voltage regulator which is connected with its input to a DC voltage supply, not shown, common to all filling elements 1 and delivers the measuring voltage at its output.
  • the output of the voltage source 14 is electrically connected via an adjustable measuring resistor 16 'and an electrical connecting line 17 to the probe section 11 forming the lower probe tip, the electrical connection 17 within the probe 10 being formed by a conductor 18 which is located inside the probe 10 extends upward from the probe section 11 through the probe sections 12 and 13 and to which a cable forming the electrical connection 17 outside the probe 10 is then connected.
  • Special connections are not required for the probe section 13 and the return gas tube 6 or for the electrodes formed by these components if these components are held on electrically conductive parts of the filling element 1 and these parts are connected to the electrical mass of the filling machine.
  • the evaluation and measuring electronics 15 furthermore have a measuring circuit 16 which, with its two connections, is parallel to the series connection of the output of the voltage source 14 and the measuring resistor 16 ', i.e. with its one connection via the electrical connection 17 also connected to the probe section 11 or to the electrode E1 there and with its other connection it is connected to the circuit ground.
  • FIGS. 1-3 show the closed state to the left of the axis FA and the open state of the liquid valve 5 to the right of this axis.
  • FIGS. 2 and 3 show the filling of the bottle 2, which is pressed with its bottle mouth 2 ′ against a seal 19 of a centering tulip 20, the seal 19 in turn lying tightly against the sealing element provided on the underside of the housing 3, the bottle 2 is in sealing position with the filling element 1.
  • FIGS. 2 and 3 also show, the filling material flowing into the bottle 2 when the liquid valve 5 is open via the discharge opening 7 forms a flow which essentially runs along the inner surface of the bottle 2 or the bottle neck and in FIGS. 2 and 3 with 22 is designated.
  • This flow 22 also necessarily touches the return gas tube 6 or the electrode E3 formed by this return gas tube.
  • a voltage is present at the inputs of the measuring circuit 16, which essentially corresponds to the open circuit voltage of the voltage source 14 when the measuring circuit 16 is at high impedance and is designated U1 in FIG. 5.
  • the measuring resistor 16 and the resistance which the liquid filling material 21 in the region of Flow 22 or between the electrodes E1 and E3 has a voltage divider with the result that the voltage at the input of the measuring circuit decreases and finally, with sufficient occupancy of the electrode E1 formed by the probe section 11, has a voltage value which is designated U2 in FIG. 5.
  • the electrical resistance of the aforementioned voltage divider formed by the filling material is then essentially determined by the distance between the electrodes E1 and E2, and also by the specific conductivity of the liquid filling material and the intensity of the flow 22.
  • the provisional filling level at which the mirror S reaches the lower probe section 11 and at which the step-shaped drop DU 1-2 of the voltage at the inputs of the measuring circuit 16 occurs from U1 to U2 is denoted by L1 in FIG. 2.
  • the resistance formed by the liquid filling material 21 and lying between the probe section 11 and the machine mass is reduced, in particular by the fact that the one which is decisive for this liquid resistance effective distance between the probe section 11 and the probe section 13 or between the electrodes E1 and E2 is only determined by the relatively short length of the probe section 12 and, moreover, the cross section relevant for the electrical fluid resistance is essentially determined by the entire inner cross section, the the bottle 2 has where the lower region of the probe section 13 is located.
  • the axial length of the probe section 12 can also be achieved, with a corresponding choice, that the two voltage drops DU 1-2 and DU 2-3 are approximately the same size, in each case Case are so pronounced that, depending on these voltage drops, the measuring circuit 16 can deliver special control signals to measuring lines 23.
  • the fill level at which the probe section 13 responds at time t2 and the voltage applied to the measuring circuit 16 has dropped to U3 is designated by L2 in FIG. 3 and corresponds to a fill level at which the closing of the liquid valve 5 is then initiated.
  • the following control of the filling element 1 is possible with the probe control, for example.
  • a filling pause can be made, i.e. for this purpose, the liquid valve can be closed for a certain period of time, for example, predetermined by a timer or timer, or it can be switched from a higher to a lower filling speed.
  • the liquid valve 5 is then closed with the control signal supplied by the measuring circuit 16. Again, this can be delayed in order to correct the fill level.
  • the measuring voltage is preferably an AC or pulse voltage. This results in the same dependency of the voltage at the input of the measuring circuit 16 shown in FIG. 5, the voltages U1-U3 being the amplitudes of the applied voltage.
  • the measuring circuit 16 has a rectifier circuit which rectifies the voltage present for further processing and evaluation.
  • the length L2 with which the lower region of the probe section 11 extends into the bottle 2 when it is filled, is optimally chosen for the respective bottle shape and can be optimally adjusted, for example, by exchanging the probe 10 and / or by axially adjusting this probe.
  • the probe section 13 is designed such that it consists of an upper, longer probe section 13 ', to which a probe section 10' can then be attached, for example by screwing, which, in addition to a section 13 'which can be directly attached and which is attributable to the probe section 13 Part 13 ′′ also has the probe sections 11 and 12, the optionally usable probe parts 10 ′ then having a different axial length for the part 13 ′′ and / or the probe section 11 and / or the probe section 12.
  • each filling element 1 is assigned its own evaluation and measurement electronics 15. In principle, however, it is also possible for a common evaluation and measuring electronics 15 to be provided for each group which comprises a predetermined number of filling elements 1.

Landscapes

  • Filling Of Jars Or Cans And Processes For Cleaning And Sealing Jars (AREA)
  • Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)

Claims (8)

  1. Dispositif de remplissage pour le remplissage de bouteilles (2), de boîtes ou de récipients similaires avec un produit de remplissage liquide, comportant au moins un élément de remplissage (1), qui présente au moins une soupape de liquide (5) commandant l'arrivée de produit de remplissage pendant une phase de remplissage et placée sur un trajet de liquide ainsi qu'au moins une sonde (10), qui au moins pendant la phase de remplissage dépasse d'une longueur donnée de la face inférieure de l'élément de remplissage (1) et s'engage à l'intérieur du récipient (2), la sonde (10) présentant une première portion de sonde (11) inférieure, formant la pointe de la sonde ainsi qu'une première électrode (E1), ainsi qu'une deuxième portion de sonde située au-dessus dans la direction axiale (FA) de la sonde (10), qui forme une deuxième électrode (E2) et qui est séparée de la première portion de sonde (11) par une troisième portion de sonde (12), réalisée en tant qu'isolateur, comportant aussi une électronique d'exploitation et de commande (15), qui se situe, avec une entrée de mesure ou de signaux, présentant au moins deux branchements, parallèlement à un parcours d'électrode formé entre la première et la deuxième électrode (E1, E2) et fournit alors un signal entraînant la fin de l'arrivée de liquide, lorsqu'à une hauteur de remplissage de réponse dans le récipient, le parcours d'électrode entre la première et la deuxième électrode (E1, E2) est franchi par le produit de remplissage liquide et la sonde (10) est donc passée d'un premier état de grande valeur ohmique dans un second état de basse valeur ohmique, déterminé par la résistance électrique du produit de remplissage entre la première et la deuxième électrode (E1, E2), caractérise, en ce qu'il est prévu sur l'élément de remplissage (1) au moins une troisième électrode (E3), qui est placée sur le trajet du produit de remplissage liquide et qui, avec la deuxième électrode (E2), se situe sur un branchement commun de l'électronique de commande et d'exploitation (15), de sorte que parallèlement au parcours d'électrode, formé par la deuxième électrode (E2) et la première électrode (E1), il est placé un parcours d'électrode formé par la troisième électrode (E3) et la première électrode (E1) et, lorsque la première électrode (E1) est occupée par le produit de remplissage liquide, pour une hauteur de remplissage provisoire, avant que soit atteinte la hauteur de remplissage de réponse, la sonde (10) prend un troisième état de faible valeur ohmique, déterminé par la résistance électrique du produit de remplissage entre la troisième et la première électrode (E3, E1), qui correspond à la hauteur de remplissage provisoire et est différent du premier et du deuxième état, et en ce que l'électronique de commande et d'exploitation (15) comporte un circuit de mesure ou d'exploitation (16), qui détecte les résistances de sonde différentes, correspondant à la hauteur de remplissage provisoire et à la hauteur de remplissage de réponse et fournit à partir de celles-ci un signal de commande, correspondant à la hauteur de remplissage provisoire ainsi qu'un signal de commande correspondant à la hauteur de remplissage de réponse.
  2. Système selon la revendication 1, caractérisé en ce que le montage parallèle des parcours d'électrode fait partie intégrante d'un dispositif diviseur de tension, recevant une tension de mesure, qui à sa sortie fournit un signal de sortie (U1, U2, U3) différent par la tension ou l'amplitude pour chaque état de la sonde (10).
  3. Système selon la revendication 2, caractérisé en ce que la tension de mesure est une tension continue.
  4. Système selon la revendication 1 ou 2, caractérisé en ce que la tension de mesure est une tension alternative ou une tension d'impulsion.
  5. Système selon l'une des revendications 2 à 4, caractérisé en ce que le montage parallèle des parcours d'électrode est relié de préférence, par au moins une impédance en série (15), avec les branchements d'une source de tension (14) fournissant la tension de mesure, et en ce que le circuit de mesure et d'exploitation (16), avec deux branchements formant une entrée de mesure, est parallèle aux parcours d'électrode.
  6. Système selon l'une des revendications 1 à 5, caractérisé en ce que les deuxième et troisième électrodes (E2, E3) sont reliées à la masse électrique du système, qui forme aussi un branchement de l'électronique de commande et d'exploitation (15).
  7. Système selon l'une des revendications précédentes, caractérisé en ce que le dispositif diviseur de tension, présentant les parcours d'électrode est conçu de manière que dans le premier état de haute valeur ohmique s'appliquent une première tension de sortie (U1), après atteinte de la hauteur de remplissage provisoire (L1), une deuxième tension de sortie (U2), inférieure à la première, et après atteinte de la hauteur de remplissage de réponse (L2), une troisième tension de sortie (U3), inférieure à la deuxième.
  8. Système selon l'une des revendications 1 à 7, caractérisé en ce que dans le cas où il existe plusieurs éléments de remplissage, il est prévu une électronique de commande et d'exploitation pour chaque élément de remplissage (1) ou pour un groupe d'éléments de remplissage.
EP94119475A 1993-12-16 1994-12-09 Système pour remplir des bouteilles, des boîtes ou des récipients similaires avec un produit liquide Expired - Lifetime EP0658511B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4342987A DE4342987A1 (de) 1993-12-16 1993-12-16 System zum Abfüllen eines flüssigen Füllgutes in Flaschen, Dosen oder dergleichen Behälter
DE4342987 1993-12-16

Publications (2)

Publication Number Publication Date
EP0658511A1 EP0658511A1 (fr) 1995-06-21
EP0658511B1 true EP0658511B1 (fr) 1996-11-06

Family

ID=6505225

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94119475A Expired - Lifetime EP0658511B1 (fr) 1993-12-16 1994-12-09 Système pour remplir des bouteilles, des boîtes ou des récipients similaires avec un produit liquide

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EP (1) EP0658511B1 (fr)
DE (2) DE4342987A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004017211B3 (de) * 2004-04-10 2006-04-27 Khs Maschinen- Und Anlagenbau Ag Füllelement zum Füllen von Flaschen oder dergleichen Behälter mit einem flüssigen Füllgut
DE102005058616A1 (de) 2005-12-07 2007-06-14 Krones Ag Vorrichtung und Verfahren zum Erfassen des Füllstandes eines Behälters und Vorrichtung zum Befüllen eines Behälters
PT1860057E (pt) * 2006-05-24 2009-08-11 Sidel Holdings & Technology Sa Unidade de válvula para máquinas de enchimento com sonda de leitura de nível numa conduta electricamente isolante
DE102009055292A1 (de) * 2009-12-23 2011-06-30 Krones Ag, 93073 Messsonde zum Bestimmen eines Füllstandes einer Flüssigkeit
DE102012012073A1 (de) 2012-06-19 2013-12-19 Khs Gmbh Sonde zur Verwendung bei Füllelementen von Füllsystemen oder Füllmaschinen sowie Füllmaschine

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1632004C3 (de) * 1967-12-16 1975-11-20 Seitz-Werke Gmbh, 6550 Bad Kreuznach Füllelement für Ein- oder Mehrkammer-Gegendruckfüllmaschinen
DE3218062A1 (de) * 1982-05-13 1983-11-17 Holstein Und Kappert Gmbh, 4600 Dortmund Verfahren zum abfuellen von fluessigkeiten in behaelter wie flaschen, dosen und dgl.
DE4102633A1 (de) * 1990-05-05 1991-11-07 Seitz Enzinger Noll Masch Fuellelement
EP0598892B1 (fr) * 1992-06-19 1998-03-18 Krones Ag Hermann Kronseder Maschinenfabrik Dispositif pour le reglage de la hauteur de remplissage dans des remplisseuses de recipients

Also Published As

Publication number Publication date
DE4342987A1 (de) 1995-06-22
EP0658511A1 (fr) 1995-06-21
DE59400997D1 (de) 1996-12-12

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