EP0931192A1 - Paste dispenser - Google Patents

Paste dispenser

Info

Publication number
EP0931192A1
EP0931192A1 EP97912091A EP97912091A EP0931192A1 EP 0931192 A1 EP0931192 A1 EP 0931192A1 EP 97912091 A EP97912091 A EP 97912091A EP 97912091 A EP97912091 A EP 97912091A EP 0931192 A1 EP0931192 A1 EP 0931192A1
Authority
EP
European Patent Office
Prior art keywords
container
metering device
channel
access
arrangement according
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
EP97912091A
Other languages
German (de)
French (fr)
Other versions
EP0931192B1 (en
Inventor
Günther Amberg
Wolfgang Huber
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.)
Ecolab GmbH and Co oHG
Original Assignee
Henkel Ecolab GmbH and Co KG
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 Henkel Ecolab GmbH and Co KG filed Critical Henkel Ecolab GmbH and Co KG
Publication of EP0931192A1 publication Critical patent/EP0931192A1/en
Application granted granted Critical
Publication of EP0931192B1 publication Critical patent/EP0931192B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F39/00—Details of washing machines not specific to a single type of machines covered by groups D06F9/00 - D06F27/00 
    • D06F39/02—Devices for adding soap or other washing agents
    • D06F39/022—Devices for adding soap or other washing agents in a liquid state

Definitions

  • the invention relates to an arrangement for supplying a paste from a flexible storage container arranged in a dimensionally stable container with descending product guidance into a metering device which promotes negative pressure, wherein a follower plate is arranged on the flexible storage container and exerts pressure on the storage container and in the bottom of the container there is an opening.
  • Liquid to pasty detergents are known in large numbers. These are generally tailored to household needs, which means that they should be sufficiently liquid and easy to pour and dose. Since they should also be stable in storage within a relatively wide temperature range, the use of organic solvents and / or hydrotropic additives is usually not possible. However, these additives are washing-inactive, comparatively complex and additionally require packaging volume or transport and storage capacity. In particular, a content of flammable solvents, which require additional safety precautions due to the comparatively high throughput of detergents in laundry plants, is a problem. Detergent concentrates of the type mentioned are therefore not or only of very limited use for laundries.
  • Powder detergents are therefore mainly used in laundry companies. Since the exact dosing of such agents is problematic or labor-intensive, particularly in large companies with extensive automation, the agents are usually stored and dosed in pre-dissolved form as base liquors, i.e. an aqueous concentrate is prepared, which is then fed to the individual consumption points.
  • the detergents usually used in laundries contain comparatively high proportions of washing alkalis, which are only limited in cold Water are soluble and also lead to salting out effects. They cause phase separation, with the result that the organic components, in particular the nonionic surfactants and soaps, separate and cream.
  • a detergent that meets these requirements is proposed in EP 0 295 525. It is a pasty detergent that places special demands on handling for dosing and mixing with water as a solvent. Such detergent pastes are transported and stored in large containers. It is proposed to place these storage containers in a removal device above the metering device and to guide the paste downwards. If a flexible container is used, it is proposed to place a follower plate on the container in the container, which exerts pressure on the storage container to ensure that the storage container is largely emptied. A generic arrangement is described in the publication.
  • the technical problem underlying the invention is to design the known arrangement so that the supply of the paste can be carried out safely and in a controllable manner using simple means and the arrangement ensures a tight connection to the dosing device which promotes negative pressure and a trouble-free as possible complete emptying.
  • This problem is solved in that in the known arrangement at the edge of the opening there is a sealing arrangement within which a tight connection from flexible storage container for access to the metering device can be represented, and access to the metering device can be blocked.
  • the proposed arrangement has the advantage that the flexible storage container can be completely emptied, since it is ensured that the material of the flexible container does not block or obstruct the conveying paths of the paste. This could easily happen if the connection between the flexible supply container and the access to the metering device were not airtight or if parts of the container material lead ahead due to the emptying of the non-tensioned supply container and would cover the container outlet ahead of time before the entire paste has been emptied.
  • the arrangement then provides a sealing ring, within the opening of which an upwardly directed knife is arranged in a connecting channel to the metering device. There is a free cross-section between the knife and the connecting channel for the paste to pass through.
  • the paste is therefore only conveyed from this arrangement if access to the metering device is enabled.
  • the negative pressure by means of which the metering device conveys can then also take effect.
  • This external sealing is particularly effective when there is a sealing lip which is arranged on the sealing ring and is directed upwards, preferably obliquely upwards, which rests firmly against the flexible container material when the container is placed on it.
  • a corresponding recess is expediently provided in the follower plate provided in such a way that the material of the flexible container guided under the follower plate does not touch the knife even when the outer ring is placed on the bottom of the container.
  • This also supports in a meaningful manner that, when the container is almost empty, the paste present in the peripheral regions of the container is first displaced towards the center by the lowering follower plate and the remainder of the paste is then concentrated in the space in the opening or is formed between the container bottom and the recess in the follower plate.
  • the knife is cruciform, which in a very simple and effective manner facilitates the provision of free cross sections for the paste to pass through.
  • the cross-shaped incision in the container material also causes the formation of material corners which fold over in the direction of flow as the paste flows through the sealing arrangement and do not impede the flow.
  • the concept of the invention is implemented in such a way that in the area of the flexible container which is placed on the container opening when inserted into the container, a commercially available container neck is used, the clamping ring of which is placed on the edge of the opening. The neck then projects through the opening in the direction of the metering device. If an insert is inserted tightly into this neck, which can be sealed against the surrounding atmosphere as well as against the dosing device with a channel arranged in the flow direction, the tight connection of the container with the dosing device can be represented very simply and very effectively.
  • the paste is normally so viscous that a sealing cap of the channel can be removed before the container is inserted into the container and thus the channel into the metering device. Should the paste become more fluid , which could lead to an unintentional leakage of paste before a tight connection to the access to the metering device, can be taken into account in an advantageous manner by equipping the channel with a closure that is automatically revealed when inserted into the metering device access.
  • a sleeve is arranged above the insert channel, that is to say from it in the direction of the inside of the container, in the wall of which there is at least one cutout which extends from the transition from the channel to the sleeve to just below the upper edge of the sleeve, this stabilizes in an advantageous manner the paste outflow and ensures that the container can be completely emptied.
  • the connection of such an arrangement with a corresponding recess in the follower plate in the central region of the arrangement of the container neck and the sleeve is also particularly advantageous here.
  • Fig. 1 shows an arrangement with sealing lip and cross knife
  • Fig. 2 shows an arrangement with container neck and insert arranged therein.
  • the metering device 2 is shown schematically in the lower part, the access 3 of which can be blocked by a closure 4.
  • a solid container 5 with an opening 9 in the bottom is placed on the frame of the metering device 2.
  • a flexible container 6 is used, which also serves as a transport container for the washing paste.
  • a follower plate 7 is placed, which has a weight of a few kilos and fits into the container so that there is only a small gap between the follower plate 7 and the inner container wall. In this gap, if necessary, if the flexible Container is designed so that a protrusion of the material from which the flexible container 6 is made.
  • a sealing ring 10 is arranged in the opening 9 of the container.
  • This sealing ring has a circumferential sealing lip 11 directed obliquely upwards. Since the sealing ring 10 is inserted into the housing of the metering device 2 and the container bottom is inserted into the annular keyway between the sealing ring 10 and the sealing lip 11, this arrangement represents an effective seal of the system from the environment. That in the container or container volume protruding cross-shaped knife 12 slits the material 20 of the flexible container 6 when it is inserted into the container 5 and pressed down. Between the cross-shaped blades of the knife 12, the cut bag corners yielding to the pressure of the paste bend downward, so that they do not resist the paste. In the segments between the blades there is sufficient free cross-section for the paste to pass through, which can enter the connecting channel 18. There is a transition to the access 3 of the metering device 2, which is sealed by a closure 4 in the state shown.
  • the negative pressure generated by the injector on the principle of a water jet pump can become effective for sucking in the paste. After dosing the predetermined amount, the access 3 is closed again, so that no further paste can be conveyed.
  • FIG. 2 an embodiment is shown in which a commercially available container neck 13 is inserted into the flexible container 6 such that when the flexible container 6 is inserted into the container 5 it fits into the opening 9 of the container.
  • the flat underside of the clamping ring 14 lies on the edge of the opening 9.
  • An insert 15 is inserted into the central opening of the container neck 13 and is fixed against the sleeve-shaped part of the neck 13 by a radially outwardly directed annular web and a radially outwardly projecting annular bead.
  • the cylindrical outer wall of the insert 15 is bent radially inwards at its end on the container side and merges into a channel 16 which faces away from the container in a slightly conical manner.
  • This channel 16 is closed at the lower end with a cap, not shown. If this cap is integrated with the channel 16, it is separated before the container 6 is inserted into the container, which does not lead to leakage if the paste has a higher viscosity.
  • a special embodiment can also be designed so that the cap opens automatically when the channel 16 is inserted into the access 3 to the metering device.
  • a sleeve 17 is arranged on the top of the insert 15 on the container side, which protrudes into the container volume.
  • a cutout 19 which extends from the transition of the bead into the sleeve to just below the upper edge of the sleeve.
  • annular sealing elements 22 are provided on the outside, which enable a seal between the metering device 2 and the insert 15 placed on this web.
  • the proposed arrangement in which there is a sealing arrangement at the edge of the opening 9, within which a tight connection from the flexible supply container 6 to the access 3 of the metering device 2 can be represented, is particularly suitable for combination, also in the form of the two alternative proposed solutions with a metering device 2, the one Injector 23 has.
  • a highly tensioned fluid for example pressurized water, is fed into this injector via a lockable channel 25, the water which relaxes after passing through the injector nozzle 23 flowing into an opposite access 27 to a measuring section.
  • the injector 23, which works on the principle of a water jet pump, generates a negative pressure on the suction side 24, which can be transmitted through the feed channel 26 to the access 3 to the metering device 2.
  • the pressure-tight connection between the flexible container 6 and the access 3 advantageously enables this negative pressure to suck the paste out of the flexible container 6 and feed it to the metering device 2.
  • the two channels 25 and 26 are closed by a double control piston system.
  • this control circuit can be seen, among other things, in the fact that the pistons are matched to one another such that the closure 4 of the channel 26 is always released first, before the piston closing the channel 25 is lowered to such an extent that the high pressure water flows in and over the injector can generate the vacuum required to convey the paste. Since water is the solvent for the paste, simple and effective mixing is ensured in this way.
  • the metering is controlled by carrying out a conductivity measurement in the measuring section behind the access 27, which enables the exact concentration of the paste in solution and thus the amount to be determined. When the target dosing quantity is reached, the channels 25, 26 are then closed again in the reverse order.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
  • Die Bonding (AREA)
  • Noodles (AREA)
  • Manufacturing And Processing Devices For Dough (AREA)
  • Gyroscopes (AREA)
  • Confectionery (AREA)
  • Vending Machines For Individual Products (AREA)
  • Formation And Processing Of Food Products (AREA)
  • Packages (AREA)
  • Closures For Containers (AREA)

Abstract

PCT No. PCT/EP97/05402 Sec. 371 Date May 10, 1999 Sec. 102(e) Date May 10, 1999 PCT Filed Oct. 1, 1997 PCT Pub. No. WO98/15684 PCT Pub. Date Apr. 16, 1998The invention relates to a device enabling delivery of a paste from a flexible storage container located in a dimensionally stable container. Product is fed into a dosing device which dispenses product under vacuum. A follow-up plate is located on the top portion of the flexible storage container exerting pressure upon it. An opening is provided at the bottom of the container. On the edge of the opening a sealing device is arranged. Inside this arrangement a tight connection is made between the flexible storage container and access to the dosing device. Access to the dosing device can be barred. The sealing device is a sealing ring. Inside the opening of the sealing ring an upwardly turned blade is located in a conduit that connects to the dosing device. Between the blade and the connecting conduit a free cross section is available in order to enable paste flow.

Description

Pastenspender Paste dispenser
Die Erfindung betrifft eine Anordnung zur Zuführung einer Paste aus einem in einem formstabilen Behälter angeordneten flexiblen Vorratsgebinde mit absteigender Produktführung in eine mittels Unterdruck fördernde Dosiervorrichtung, wobei auf dem flexiblem Vorratsgebinde eine Folgeplatte angeordnet ist, die Druck auf das Vorratsgebinde ausübt, und im Boden des Behälters eine Öffnung vorhanden ist.The invention relates to an arrangement for supplying a paste from a flexible storage container arranged in a dimensionally stable container with descending product guidance into a metering device which promotes negative pressure, wherein a follower plate is arranged on the flexible storage container and exerts pressure on the storage container and in the bottom of the container there is an opening.
Flüssige bis pastenförmige Waschmittel sind in großer Zahl bekannt. Diese sind im allgemeinen auf die Bedürfnisse im Haushalt abgestimmt, das heißt sie sollen hinreichend flüssig sein und sich problemlos ausgießen und dosieren lassen. Da sie außerdem innerhalb eines größeren Temperaturbereichs lagerstabil sein sollen, kommt man üblicherweise nicht ohne die Anwendung von organischen Lösungsmitteln und/oder hydrotropen Zusatzstoffen aus. Diese Zusätze sind jedoch waschinaktiv, vergleichsweise aufwendig und beanspruchen zusätzlich Verpackungsvolumen bzw. Transport- und Lagerkapazität. Insbesondere stört ein Gehalt an brennbaren Lösungsmitteln, die wegen des vergleichsweise hohen Durchsatzes an Waschmitteln in Wäschereibetrieben zusätzlich Sicherheitsvorkehrungen erfordern. Waschmittelkonzentrate der genannten Art sind daher für Wäschereien nicht oder nur sehr bedingt brauchbar.Liquid to pasty detergents are known in large numbers. These are generally tailored to household needs, which means that they should be sufficiently liquid and easy to pour and dose. Since they should also be stable in storage within a relatively wide temperature range, the use of organic solvents and / or hydrotropic additives is usually not possible. However, these additives are washing-inactive, comparatively complex and additionally require packaging volume or transport and storage capacity. In particular, a content of flammable solvents, which require additional safety precautions due to the comparatively high throughput of detergents in laundry plants, is a problem. Detergent concentrates of the type mentioned are therefore not or only of very limited use for laundries.
Es werden daher in Wäschereibetrieben in der Hauptsache pulverförmige Waschmittel eingesetzt. Da insbesondere in großen Betrieben mit weitgehender Automatisierung die genaue Dosierung derartiger Mittel problematisch bzw. personalaufwendig ist, werden die Mittel meist in vorgelöster Form als Stammlaugen bevorratet und dosiert, das heißt, man setzt ein wässriges Konzentrat an, das dann den einzelnen Verbrauchsstellen zugeführt wird. Die üblicherweise in Wäschereibetrieben verwendeten Waschmittel enthalten jedoch vergleichsweise hohe Anteile an Waschalkalien, die nur beschränkt in kaltem Wasser löslich sind und überdies zu Aussalzungseffekten führen. Sie bewirken eine Phasentrennung mit der Folge, daß die organischen Komponenten, insbesondere die nicht-ionischen Tenside und Seifen, sich abscheiden und aufrahmen. Man muß daher in relativ starker wässriger Verdünnung arbeiten und die Stammlaugen zusätzlich ständig intensiv durchmischen und im Kreislauf führen, um auch in den Zuführungsleitungen zu den Verbrauchsstellen ein Abscheiden einzelner Komponenten zu verhindern. Derartige Verfahren erfordern daher hohe Investitionen für geräumige Ansatzbehälter und die damit verbundene Statik für Mischer und Fördereinrichtungen sowie eine ständige Energiezufuhr für das Temperieren und Umpumpen der Stammlaugen.Powder detergents are therefore mainly used in laundry companies. Since the exact dosing of such agents is problematic or labor-intensive, particularly in large companies with extensive automation, the agents are usually stored and dosed in pre-dissolved form as base liquors, i.e. an aqueous concentrate is prepared, which is then fed to the individual consumption points. However, the detergents usually used in laundries contain comparatively high proportions of washing alkalis, which are only limited in cold Water are soluble and also lead to salting out effects. They cause phase separation, with the result that the organic components, in particular the nonionic surfactants and soaps, separate and cream. It is therefore necessary to work in a relatively strong aqueous dilution and to mix the stock liquors continuously and intensively in order to prevent the separation of individual components in the supply lines to the consumption points. Such processes therefore require high investments for spacious batch containers and the associated statics for mixers and conveyors as well as a constant supply of energy for tempering and pumping around the stock liquors.
Ein diesen Anforderungen entsprechendes Waschmittel ist in der EP 0 295 525 vorgeschlagen. Dabei handelt es sich um ein pastöses Waschmittel, das besondere Anforderungen an die Handhabung für das Dosieren und Vermischen mit Wasser als Lösungsmittel stellt. Derartige Waschmittelpasten werden in großen Gebinden transportiert und bevorratet. Es wird vorgeschlagen, diese Vorratsgebinde in eine Entnahmevorrichtung oberhalb der Dosiervorrichtung zu setzen und die Paste nach unten absteigend zu führen. Im Fall der Verwendung eines flexiblen Gebindes wird vorgeschlagen, auf das im Behälter befindliche Gebinde eine Folgeplatte aufzusetzen, die Druck auf das Vorratsgebinde ausübt, um eine weitgehende Entleerung des Vorratsbehälters sicherzustellen. In der Druckschrift wird eine gattungsgemäße Anordnung beschrieben.A detergent that meets these requirements is proposed in EP 0 295 525. It is a pasty detergent that places special demands on handling for dosing and mixing with water as a solvent. Such detergent pastes are transported and stored in large containers. It is proposed to place these storage containers in a removal device above the metering device and to guide the paste downwards. If a flexible container is used, it is proposed to place a follower plate on the container in the container, which exerts pressure on the storage container to ensure that the storage container is largely emptied. A generic arrangement is described in the publication.
Das der Erfindung zugrunde liegende technische Problem besteht darin, die bekannte Anordnung so auszubilden, daß die Zuführung der Paste mit einfachen Mitteln sicher und kontrollierbar durchzuführen ist und die Anordnung einen dichten Anschluß an die mit Unterdruck fördernde Dosiervorrichtung sowie eine störungsfreie möglichst vollständige Entleerung gewährleistet. Dieses Problem wird dadurch gelöst, daß bei der bekannten Anordnung am Rand der Öffnung eine Dichtanordnung vorhanden ist, innerhalb derer eine dichte Verbindung vom flexiblem Vorratsgebinde zum Zugang der Dosiervorrichtung darstellbar ist, und der Zugang zur Dosiervorrichtung absperrbar ist.The technical problem underlying the invention is to design the known arrangement so that the supply of the paste can be carried out safely and in a controllable manner using simple means and the arrangement ensures a tight connection to the dosing device which promotes negative pressure and a trouble-free as possible complete emptying. This problem is solved in that in the known arrangement at the edge of the opening there is a sealing arrangement within which a tight connection from flexible storage container for access to the metering device can be represented, and access to the metering device can be blocked.
Die vorgeschlagene Anordnung hat den Vorteil, daß das flexible Vorratsgebinde vollständig entleerbar ist, da gewährleistet ist, daß das Material des flexiblen Gebindes die Förderwege der Paste nicht verstopft oder behindert. Dies könnte leicht passieren, wenn die Verbindung zwischen dem flexiblen Vorratsgebinde und dem Zugang zur Dosiervorrichtung nicht luftdicht wäre oder durch die Entleerung des nicht gespannten Vorratsgebindes Teile des Gebindematerials voreilen und den Gebindeauslaß vorzeitig abdecken würde, bevor die gesamte Paste entleert ist.The proposed arrangement has the advantage that the flexible storage container can be completely emptied, since it is ensured that the material of the flexible container does not block or obstruct the conveying paths of the paste. This could easily happen if the connection between the flexible supply container and the access to the metering device were not airtight or if parts of the container material lead ahead due to the emptying of the non-tensioned supply container and would cover the container outlet ahead of time before the entire paste has been emptied.
Im Rahmen dieses Erfindungsgedankens werden zwei alternative Lösungen vorgeschlagen. Einmal sieht danach die Anordnung einen Dichtring vor, innerhalb dessen Öffnung in einem Verbindungskanal zur Dosiervorrichtung ein nach oben gerichtetes Messer angeordnet ist. Zwischen Messer und Verbindungskanal ist freier Querschnitt für den Pastendurchtritt vorhanden. Hiermit ist es vorteilhaft in einfacher Weise möglich, das flexible Vorratsgebinde beim Einsatz in den Behälter automatisch aufzuschneiden, wobei gleichzeitig durch die Dichtlippen eine druckdichte Abdichtung nach außen hin gewährleistet wird. Gefördert wird die Paste aus dieser Anordnung demnach nur dann, wenn der Zugang zur Dosiervorrichtung freigegeben ist. Dabei kann dann auch der Unterdruck wirksam werden, mittels dessen die Dosiervorrichtung fördert. Diese Abdichtung nach außen wird besonders wirksam, wenn eine am Dichtring angeordnete und nach oben, vorzugsweise schräg nach oben gerichtete Dichtlippe vorhanden ist, die sich beim Aufsetzten des Gebindes fest gegen das flexible Gebindematerial anlegt.Within the framework of this inventive idea, two alternative solutions are proposed. Once, the arrangement then provides a sealing ring, within the opening of which an upwardly directed knife is arranged in a connecting channel to the metering device. There is a free cross-section between the knife and the connecting channel for the paste to pass through. In this way it is advantageously possible in a simple manner to automatically cut open the flexible supply container when it is used in the container, while at the same time ensuring a pressure-tight seal to the outside through the sealing lips. The paste is therefore only conveyed from this arrangement if access to the metering device is enabled. The negative pressure by means of which the metering device conveys can then also take effect. This external sealing is particularly effective when there is a sealing lip which is arranged on the sealing ring and is directed upwards, preferably obliquely upwards, which rests firmly against the flexible container material when the container is placed on it.
Ist das Messer so angeordnet, daß es in den unteren Behälterraum hineinragt, wird zweckmäßigerweise in der Folgeplatte eine entsprechende Aussparung derart vorgesehen, daß das unter der Folgeplatte geführte Material des flexiblen Gebindes auch bei Auflage des äußeren Kranzes auf dem Behälterboden das Messer nicht berührt. Hierdurch wird in sinnvoller Weise auch unterstützt, daß bei fast entleertem Gebinde die in den peripheren Bereichen des Gebindes vorhandene Paste zuerst durch die sich absenkende Folgeplatte in Richtung des Zentrums verdrängt wird und die Reste der Paste sich dann in dem Raum konzentrieren, der in der Öffnung bzw. zwischen dem Behälterboden und der Aussparung in der Folgeplatte gebildet wird.If the knife is arranged so that it projects into the lower container space, a corresponding recess is expediently provided in the follower plate provided in such a way that the material of the flexible container guided under the follower plate does not touch the knife even when the outer ring is placed on the bottom of the container. This also supports in a meaningful manner that, when the container is almost empty, the paste present in the peripheral regions of the container is first displaced towards the center by the lowering follower plate and the remainder of the paste is then concentrated in the space in the opening or is formed between the container bottom and the recess in the follower plate.
Gemäß einer besonderen Ausführungsform ist das Messer kreuzförmig ausgebildet, was in sehr einfacher und wirkungsvoller Weise das Vorsehen freier Querschnitte für den Pastendurchtritt erleichtert. Auch bewirkt der kreuzförmige Einschnitt in das Gebindematerial die Bildung von Materiaiecken, die sich beim Durchfluß der Paste innerhalb der Dichtanordnung in Fließrichtung umlegen und den Fluß nicht behindern.According to a special embodiment, the knife is cruciform, which in a very simple and effective manner facilitates the provision of free cross sections for the paste to pass through. The cross-shaped incision in the container material also causes the formation of material corners which fold over in the direction of flow as the paste flows through the sealing arrangement and do not impede the flow.
In einer anderen Ausgestaltung wird der Erfindungsgedanke so umgesetzt, daß in dem Bereich des flexiblen Gebindes, der beim Einsetzen in den Behälter auf die Behälteröffnung gesetzt wird, ein handelsüblicher Gebindehals eingesetzt wird, dessen Klemmring auf den Rand der Öffnung aufgesetzt wird. Durch die Öffnung ragt dann der Hals in Richtung der Dosiervorrichtung. Wird in diesen Hals ein Einsatz dicht eingesetzt, der sowohl gegen die umgebende Atmosphäre als auch mit einem in Fließrichtung angeordneten Kanal gegen die Dosiervorrichtung abdichtbar ist, kann mit einfachen Mitteln und sehr wirkungsvoll die dichte Verbindung des Gebindes mit der Dosiervorrichtung dargestellt werden.In another embodiment, the concept of the invention is implemented in such a way that in the area of the flexible container which is placed on the container opening when inserted into the container, a commercially available container neck is used, the clamping ring of which is placed on the edge of the opening. The neck then projects through the opening in the direction of the metering device. If an insert is inserted tightly into this neck, which can be sealed against the surrounding atmosphere as well as against the dosing device with a channel arranged in the flow direction, the tight connection of the container with the dosing device can be represented very simply and very effectively.
Normalerweise ist die Paste so zähflüssig, daß eine Verschlußkappe des Kanals entfernt werden kann, bevor das Gebinde in den Behälter und damit der Kanal in den Zugang der Dosiervorrichtung eingesetzt wird. Sollte die Paste leichtflüssiger sein, wodurch ein unbeabsichtigter Austritt von Paste vor dichtem Anschluß an den Zugang zur Dosiervorrichtung auftreten könnte, kann dem in vorteilhafter Weise dadurch Rechnung getragen werden, daß der Kanal mit einen beim Einsetzen in den Zugang der Dosiervorrichtung automatisch offenbaren Verschluß ausgestattet wird. Wird oberhalb des Einsatzkanals, das heißt von diesem aus in Richtung des Gebindeinnern gerichtet, eine Hülse angeordnet, in deren Wand mindestens ein Ausschnitt vorhanden ist, der sich vom Übergang des Kanals zur Hülse bis kurz unterhalb des oberen Hülsenrandes erstreckt, stabilisiert dies in vorteilhafter Weise den Pastenausfluß und gewährleistet die vollständige Entleerbarkeit des Gebindes. Besonders vorteilhaft ist auch hier die Verbindung einer solchen Anordnung mit einer entsprechnenden Aussparung der Folgeplatte im zentralen Bereich der Anordnung des Gebindehalses und der Hülse.The paste is normally so viscous that a sealing cap of the channel can be removed before the container is inserted into the container and thus the channel into the metering device. Should the paste become more fluid , which could lead to an unintentional leakage of paste before a tight connection to the access to the metering device, can be taken into account in an advantageous manner by equipping the channel with a closure that is automatically revealed when inserted into the metering device access. If a sleeve is arranged above the insert channel, that is to say from it in the direction of the inside of the container, in the wall of which there is at least one cutout which extends from the transition from the channel to the sleeve to just below the upper edge of the sleeve, this stabilizes in an advantageous manner the paste outflow and ensures that the container can be completely emptied. The connection of such an arrangement with a corresponding recess in the follower plate in the central region of the arrangement of the container neck and the sleeve is also particularly advantageous here.
Die erwähnten und weitere Vorteile werden bei der Erläuterung von Ausführungsbeispielen verdeutlicht, die in beiliegender Zeichnung dargestellt sind. Darin zeigtThe mentioned and other advantages are clarified in the explanation of exemplary embodiments which are illustrated in the accompanying drawing. In it shows
Fig. 1 eine Anordnung mit Dichtiippe und Kreuzmesser undFig. 1 shows an arrangement with sealing lip and cross knife and
Fig. 2 eine Anordnung mit Gebindehals und darin angeordnetem Einsatz.Fig. 2 shows an arrangement with container neck and insert arranged therein.
In der Darstellung der beiden Ausführungsbeispiele ist im unteren Teil schematisch die Dosiervorrichtung 2 dargestellt, deren Zugang 3 durch einen Verschluß 4 absperrbar ist. Auf das Gestell der Dosiervorrichtung 2 ist ein fester Behälter 5 mit einer Öffnung 9 im Boden aufgesetzt. In den Behälter 5 ist ein flexibles Gebinde 6 eingesetzt, das zweckmäßigerweise auch als Transportbehälter für die Waschpaste dient. Auf das flexible Gebinde 6 ist eine Folgeplatte 7 aufgesetzt, die ein Gewicht von einigen Kilo aufweist und so in den Behälter paßt, daß zwischen Folgeplatte 7 und innerer Behälterwand nur ein geringer Spalt besteht. In diesem Spalt kann gegebenenfalls, wenn der flexible Behälter so ausgebildet ist, ein Überstand des Materials angeordnet sein, aus dem das flexible Gebinde 6 hergestellt ist.In the illustration of the two exemplary embodiments, the metering device 2 is shown schematically in the lower part, the access 3 of which can be blocked by a closure 4. A solid container 5 with an opening 9 in the bottom is placed on the frame of the metering device 2. In the container 5, a flexible container 6 is used, which also serves as a transport container for the washing paste. On the flexible container 6, a follower plate 7 is placed, which has a weight of a few kilos and fits into the container so that there is only a small gap between the follower plate 7 and the inner container wall. In this gap, if necessary, if the flexible Container is designed so that a protrusion of the material from which the flexible container 6 is made.
In Fig. 1 ist gut zu erkennen, daß in der Öffnung 9 des Behälters ein Dichtring 10 angeordnet ist. Dieser Dichtring weist schräg nach oben gerichtet eine umlaufende Dichtlippe 11 auf. Da der Dichtring 10 in das Gehäuse der Dosiervorrichtung 2 eingelassen und der Behälterboden in die ringförmige Keilnut zwischen Dichtring 10 und Dichtlippe 11 eingelegt ist, stellt diese Anordnung eine wirkungsvolle Abdichtung des Systems gegenüber der Umgebung dar. Das in das Behälter- bzw. Gebinde-Volumen hineinragende kreuzförmige Messer 12 schlitzt das Material 20 des flexiblen Gebindes 6 auf, wenn dieses in den Behälter 5 eingesetzt und nach unten gedrückt wird. Zwischen den kreuzförmig angeordneten Klingen des Messers 12 biegen sich die dem Druck der Paste nachgebenden aufgeschnittenen Beutelecken nach unten, so daß sie der Paste keinen Widerstand entgegensetzen. In den Segmenten zwischen den Klingen steht genügend freier Querschnitt für den Pastendurchtritt zur Verfügung, die den Verbindungskanal 18 eintreten kann. Dort besteht ein Übergang zum Zugang 3 der Dosiervorrichtung 2, der im dargestellten Zustand durch einen Verschluß 4 abgedichtet ist.In Fig. 1 it can be clearly seen that a sealing ring 10 is arranged in the opening 9 of the container. This sealing ring has a circumferential sealing lip 11 directed obliquely upwards. Since the sealing ring 10 is inserted into the housing of the metering device 2 and the container bottom is inserted into the annular keyway between the sealing ring 10 and the sealing lip 11, this arrangement represents an effective seal of the system from the environment. That in the container or container volume protruding cross-shaped knife 12 slits the material 20 of the flexible container 6 when it is inserted into the container 5 and pressed down. Between the cross-shaped blades of the knife 12, the cut bag corners yielding to the pressure of the paste bend downward, so that they do not resist the paste. In the segments between the blades there is sufficient free cross-section for the paste to pass through, which can enter the connecting channel 18. There is a transition to the access 3 of the metering device 2, which is sealed by a closure 4 in the state shown.
Wird der Zugang 3 geöffnet, kann der durch den Injektor nach dem Prinzip einer Wasserstrahlpumpe erzeugte Unterdruck zum Ansaugen der Paste wirksam werden. Nach Dosierung der vorgegebenen Menge wird der Zugang 3 wieder verschlossen, so daß keine weitere Paste mehr gefördert werden kann.If access 3 is opened, the negative pressure generated by the injector on the principle of a water jet pump can become effective for sucking in the paste. After dosing the predetermined amount, the access 3 is closed again, so that no further paste can be conveyed.
In Fig. 2 ist ein Ausführungsbeispiel dargestellt, bei dem in das flexible Gebinde 6 ein handelsüblicher Gebindehals 13 derart eingesetzt ist, daß dieser beim Einsetzten des flexiblen Gebindes 6 in den Behälter 5 in die Öffnung 9 des Behälters paßt. Dabei legt sich die plane Unterseite des Klemmrings 14 auf den Rand der Öffnung 9 auf. Durch den Klemmring 14 wird das flexible Material 20 des Gebindes 6 in einem Spalt zwischen Klemmring 14 und Gebindehals 13 dicht festgeklemmt. In die zentrale Öffnung des Gebindehalses 13 ist ein Einsatz 15 eingesetzt, der durch einen radial nach außen gerichteten Ringsteg und einen radial nach außen überstehenden Ringwulst gegen den hülsenförmigen Teil des Halses 13 festgelegt ist. Die zylindrische Außenwand des Einsatzes 15 ist an ihrem behälterseitigen Ende radial nach innen umgebogen und geht in einen Kanal 16 über, der leicht konisch vom Behälter abgewandt ist. Dieser Kanal 16 ist am unteren Ende mit einer nicht dargestellten Kappe verschlossen. Ist diese Kappe mit dem Kanal 16 integriert verbunden, wird sie vor dem Einsetzen des Gebindes 6 in den Behälter abgetrennt, was bei höherer Viskosität der Paste nicht zu einem Auslaufen führt. Für dünnflüssige Pasten kann ein spezielles Ausführungsbeispiel auch so ausgestaltet sein, daß die Kappe sich beim Einsetzten des Kanals 16 in den Zugang 3 zur Dosiervorrichtung automatisch öffnet.In Fig. 2, an embodiment is shown in which a commercially available container neck 13 is inserted into the flexible container 6 such that when the flexible container 6 is inserted into the container 5 it fits into the opening 9 of the container. The flat underside of the clamping ring 14 lies on the edge of the opening 9. Through the clamping ring 14, the flexible material 20th of the container 6 tightly clamped in a gap between the clamping ring 14 and the container neck 13. An insert 15 is inserted into the central opening of the container neck 13 and is fixed against the sleeve-shaped part of the neck 13 by a radially outwardly directed annular web and a radially outwardly projecting annular bead. The cylindrical outer wall of the insert 15 is bent radially inwards at its end on the container side and merges into a channel 16 which faces away from the container in a slightly conical manner. This channel 16 is closed at the lower end with a cap, not shown. If this cap is integrated with the channel 16, it is separated before the container 6 is inserted into the container, which does not lead to leakage if the paste has a higher viscosity. For thin pastes, a special embodiment can also be designed so that the cap opens automatically when the channel 16 is inserted into the access 3 to the metering device.
Die leicht konische Ausbildung des Kanals 16 erlaubt einen dichten Anschluß an den Zugang 3. Auf der behälterseitigen Kuppe des Einsatzes 15 ist eine Hülse 17 angeordnet, die in das Behältervolumen hineinragt. Im Hülsenmantel ist ein Ausschnitt 19 vorhanden, der sich vom Übergang des Wulstes in die Hülse bis kurz unterhalb des oberen Hülsenrandes erstreckt. In einem sich nach oben erstreckenden kranzförmigen Steg 21 der Dosiervorrichtung 2, innerhalb dessen der Verbindungskanal 18 gebildet wird, sind außen ringförmige Dichtelemente 22 vorgesehen, die eine Abdichtung zwischen der Dosiervorrichtung 2 und dem auf diesen Steg aufgesetzten Einsatz 15 ermöglichen.The slightly conical design of the channel 16 allows a tight connection to the access 3. A sleeve 17 is arranged on the top of the insert 15 on the container side, which protrudes into the container volume. In the sleeve casing there is a cutout 19 which extends from the transition of the bead into the sleeve to just below the upper edge of the sleeve. In an upwardly extending ring-shaped web 21 of the metering device 2, within which the connecting channel 18 is formed, annular sealing elements 22 are provided on the outside, which enable a seal between the metering device 2 and the insert 15 placed on this web.
Die vorgeschlagene Anordnung, bei der am Rand der Öffnung 9 eine Dichtanordnung vorhanden ist, innerhalb derer eine dichte Verbindung vom flexiblen Vorratsgebinde 6 zum Zugang 3 der Dosiervorrichtung 2 darstellbar ist, eignet sich, auch in Form der beiden alternativen Lösungsvorschläge, in besonderer Weise zur Kombination mit einer Dosiervorrichtung 2, die einen Injektor 23 aufweist. In diesen Injektor wird über einen absperrbaren Kanal 25 ein hochgespanntes Fluid, beispielsweise Druckwasser, zugeführt, wobei das sich nach Durchgang durch die Injektordüse 23 entspannende Wasser in einen gegenüberliegenden Zugang 27 zu einer Meßstrecke strömt. Der nach dem Prinzip einer Wasserstrahlpumpe arbeitende Injektor 23 erzeugt auf der Saugseite 24 einen Unterdruck, der durch den Zuführkanal 26 auf den Zugang 3 zur Dosiervorrichtung 2 übertragen werden kann. Die druckdichte Verbindung zwischen flexiblem Gebinde 6 und dem Zugang 3 ermöglicht in vorteilhafter Weise, daß dieser Unterdruck die Paste aus dem flexiblen Behälter 6 ansaugt und der Dosiervorrichtung 2 zuführt. Die beiden Kanäle 25 und 26 werden dabei durch ein Doppel-Steuerkolbensystem verschlossen.The proposed arrangement, in which there is a sealing arrangement at the edge of the opening 9, within which a tight connection from the flexible supply container 6 to the access 3 of the metering device 2 can be represented, is particularly suitable for combination, also in the form of the two alternative proposed solutions with a metering device 2, the one Injector 23 has. A highly tensioned fluid, for example pressurized water, is fed into this injector via a lockable channel 25, the water which relaxes after passing through the injector nozzle 23 flowing into an opposite access 27 to a measuring section. The injector 23, which works on the principle of a water jet pump, generates a negative pressure on the suction side 24, which can be transmitted through the feed channel 26 to the access 3 to the metering device 2. The pressure-tight connection between the flexible container 6 and the access 3 advantageously enables this negative pressure to suck the paste out of the flexible container 6 and feed it to the metering device 2. The two channels 25 and 26 are closed by a double control piston system.
Die Besonderheit bei dieser Steuerschaltung ist unter anderem darin zu sehen, daß die Kolben so aufeinander abgestimmt sind, daß immer zunächst der Verschluß 4 des Kanals 26 freigegeben wird, bevor auch der den Kanal 25 verschließende Kolben soweit abgesenkt ist, daß das Hochdruckwasser einströmen und über den Injektor den zur Förderung der Paste erforderlichen Unterdruck erzeugen kann. Da das Wasser das Lösungsmittel für die Paste darstellt, ist auf diese Weise eine einfache und wirkungsvolle Durchmischung gewährleistet. Die Dosierung wird darüber gesteuert, daß in der Meßstrecke hinter dem Zugang 27 eine Leitfähigkeitsmessung durchgeführt wird, die die Feststellung der genauen Konzentration der in Lösung befindlichen Paste und damit der Menge ermöglicht. Bei Erreichen der Solldosiermenge werden die Kanäle 25, 26 dann in umgekehrter Reihenfolge wieder verschlossen. The peculiarity of this control circuit can be seen, among other things, in the fact that the pistons are matched to one another such that the closure 4 of the channel 26 is always released first, before the piston closing the channel 25 is lowered to such an extent that the high pressure water flows in and over the injector can generate the vacuum required to convey the paste. Since water is the solvent for the paste, simple and effective mixing is ensured in this way. The metering is controlled by carrying out a conductivity measurement in the measuring section behind the access 27, which enables the exact concentration of the paste in solution and thus the amount to be determined. When the target dosing quantity is reached, the channels 25, 26 are then closed again in the reverse order.

Claims

Patentansprüche claims
1. Anordnung zur Zuführung einer Paste aus einem in einem formstabilen Behälter (5) angeordneten flexiblem Vorratsgebinde (6) mit absteigender Produktführung in eine mittels Unterdruck fördernde Dosiervorrichtung (2), wobei auf dem flexiblem Vorratsgebinde (6) eine Folgeplatte (7) angeordnet ist, die Druck auf das Vorratsgebinde (6) ausübt, und im Boden des Behälters (5) eine Öffnung (9) vorhanden ist,1. Arrangement for supplying a paste from a flexible storage container (6) arranged in a dimensionally stable container (5) with descending product guidance into a metering device (2) which promotes by means of negative pressure, a follower plate (7) being arranged on the flexible storage container (6) , which exerts pressure on the storage container (6) and an opening (9) is present in the bottom of the container (5),
dadurch gekennzeichnet, daßcharacterized in that
am Rand der Öffnung (9) eine Dichtanordnung (10, 13) vorhanden ist, innerhalb derer eine dichte Verbindung vom flexiblem Vorratsgebinde (6) zum Zugang (3) der Dosiervorrichtung (2) darstellbar ist, und daß der Zugang (3) zur Dosiervorrichtung (2) absperrbar ist.at the edge of the opening (9) there is a sealing arrangement (10, 13) within which a tight connection from the flexible supply container (6) to the access (3) of the metering device (2) can be represented, and that the access (3) to the metering device (2) can be locked.
2. Anordnung gemäß Anspruch 1 , dadurch gekennzeichnet, daß die Dichtanordnung ein Dichtring (10) ist und innerhalb der Öffnung (9) des Dichtrings (10) in einem Verbindungskanal (18) zur Dosiervorrichtung (2) ein nach oben gerichtetes Messer (12) angeordnet ist, wobei zwischen Messer (12) und Verbindungskanal (18) freier Querschnitt für den Pastendurchtritt vorhanden ist.2. Arrangement according to claim 1, characterized in that the sealing arrangement is a sealing ring (10) and within the opening (9) of the sealing ring (10) in a connecting channel (18) to the metering device (2) an upwardly directed knife (12) is arranged, between the knife (12) and the connecting channel (18) there is a free cross section for the paste passage.
3. Anordnung gemäß Anspruch 2, dadurch gekennzeichnet, daß der Dichtring (10) eine nach oben gerichtete Dichtlippe (11) aufweist, die gegen das flexible Gebindematerial (19) fest anliegt.3. Arrangement according to claim 2, characterized in that the sealing ring (10) has an upwardly directed sealing lip (11) which bears firmly against the flexible packaging material (19).
4. Anordnung gemäß Anspruch 2 oder 3, dadurch gekennzeichnet, daß das Messer (12) so angeordnet ist, daß es in den Behälter (5) hineinragt, und daß die Folgeplatte (7) eine Aussparung (8) derart aufweist, daß sie bei 98/156844. Arrangement according to claim 2 or 3, characterized in that the knife (12) is arranged so that it protrudes into the container (5), and that the follower plate (7) has a recess (8) such that it at 98/15684
Auflage auf dem Behälterboden das Messer (12) und die Dichtlippe (11) nicht berührt.Rest on the bottom of the container does not touch the knife (12) and the sealing lip (11).
5. Anordnung gemäß einem der Ansprüche 2 bis 5, dadurch gekennzeichnet, daß das Messer (12) kreuzförmig ausgebildet ist.5. Arrangement according to one of claims 2 to 5, characterized in that the knife (12) is cross-shaped.
6. Anordnung gemäß Anspruch 1, dadurch gekennzeichnet, daß die Dichtanordnung (10) aus einem an sich bekannten Gebindehals (13) besteht, in dem ein Einsatz (15) dicht angeordnet ist, wobei der Einsatz (15) gegen die Dosiervorrichtung (2) abdichtbar ist und einen Kanal (16) aufweist, der mit dem Zugang (3) der Dosiervorrichtung (2) verbindbar ist.6. Arrangement according to claim 1, characterized in that the sealing arrangement (10) consists of a container neck (13) known per se, in which an insert (15) is arranged tightly, the insert (15) against the metering device (2) is sealable and has a channel (16) which can be connected to the access (3) of the metering device (2).
7. Anordnung gemäß Anspruch 6, dadurch gekennzeichnet, daß an dem in Fließrichtung vorderen Ende des Kanals (16) ein Verschluß (4) vorhanden ist, der beim Einsetzen des Kanals (16) in den Zugang (3) der Dosiervorrichtung (2) automatisch offenbar ist.7. Arrangement according to claim 6, characterized in that a closure (4) is present at the front end of the channel (16) in the direction of flow, which automatically when inserting the channel (16) into the access (3) of the metering device (2) is evident.
8. Anordnung gemäß Anspruch 6 oder 7, dadurch gekennzeichnet, daß oberhalb des Einsatzkanals (16) eine mit diesem verbundene Hülse (17) angeordnet ist, die in das Gebinde (6) hineinragt, wobei in der Hülsenwand (17) mindestens ein Ausschnitt (19) vorhanden ist, der sich vom Übergang des Kanals (16) zur Hülse (17) bis kurz unterhalb des oberen Hülsenrandes erstreckt.8. Arrangement according to claim 6 or 7, characterized in that above the insert channel (16) with this a sleeve (17) is arranged, which protrudes into the container (6), wherein in the sleeve wall (17) at least one cutout ( 19) is present, which extends from the transition of the channel (16) to the sleeve (17) to just below the upper edge of the sleeve.
9. Anordnung gemäß Anspruch 8, dadurch gekennzeichnet, daß die Folgeplatte (7) eine Aussparung (8) derart aufweist, daß sie bei Auflage auf dem Behälterboden den Gebindehals (13) und die Hülse (17) nicht berührt. 9. Arrangement according to claim 8, characterized in that the follower plate (7) has a recess (8) such that it does not touch the container neck (13) and the sleeve (17) when resting on the container bottom.
EP97912091A 1996-10-10 1997-10-01 Paste dispenser Expired - Lifetime EP0931192B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19641746 1996-10-10
DE19641746A DE19641746C2 (en) 1996-10-10 1996-10-10 Paste dispenser
PCT/EP1997/005402 WO1998015684A1 (en) 1996-10-10 1997-10-01 Paste dispenser

Publications (2)

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EP0931192A1 true EP0931192A1 (en) 1999-07-28
EP0931192B1 EP0931192B1 (en) 2001-04-04

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US (1) US6149034A (en)
EP (1) EP0931192B1 (en)
AT (1) ATE200317T1 (en)
DE (2) DE19641746C2 (en)
DK (1) DK0931192T3 (en)
ES (1) ES2155989T3 (en)
GR (1) GR3035707T3 (en)
NO (1) NO991683L (en)
PL (1) PL183914B1 (en)
PT (1) PT931192E (en)
WO (1) WO1998015684A1 (en)

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DE59703309D1 (en) 2001-05-10
DE19641746C2 (en) 1999-04-01
EP0931192B1 (en) 2001-04-04
NO991683D0 (en) 1999-04-09
ES2155989T3 (en) 2001-06-01
PL183914B1 (en) 2002-08-30
GR3035707T3 (en) 2001-07-31
NO991683L (en) 1999-04-09
DE19641746A1 (en) 1998-04-23
US6149034A (en) 2000-11-21
PT931192E (en) 2001-09-27
PL332428A1 (en) 1999-09-13
DK0931192T3 (en) 2001-07-02
WO1998015684A1 (en) 1998-04-16
ATE200317T1 (en) 2001-04-15

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