EP0105842B1 - Method and apparatus for preparing liquid mixtures - Google Patents

Method and apparatus for preparing liquid mixtures Download PDF

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Publication number
EP0105842B1
EP0105842B1 EP19830810438 EP83810438A EP0105842B1 EP 0105842 B1 EP0105842 B1 EP 0105842B1 EP 19830810438 EP19830810438 EP 19830810438 EP 83810438 A EP83810438 A EP 83810438A EP 0105842 B1 EP0105842 B1 EP 0105842B1
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EP
European Patent Office
Prior art keywords
container
liquid
outlet
containers
treatment
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
Application number
EP19830810438
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German (de)
French (fr)
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EP0105842A1 (en
Inventor
Barrie Anthony Freeman
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.)
Cessione ilford Ltd
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Ciba Geigy AG
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Publication date
Priority claimed from GB838310702A external-priority patent/GB8310702D0/en
Application filed by Ciba Geigy AG filed Critical Ciba Geigy AG
Publication of EP0105842A1 publication Critical patent/EP0105842A1/en
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Publication of EP0105842B1 publication Critical patent/EP0105842B1/en
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    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03D—APPARATUS FOR PROCESSING EXPOSED PHOTOGRAPHIC MATERIALS; ACCESSORIES THEREFOR
    • G03D3/00—Liquid processing apparatus involving immersion; Washing apparatus involving immersion
    • G03D3/02—Details of liquid circulation
    • G03D3/06—Liquid supply; Liquid circulation outside tanks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
    • B01F35/80—Forming a predetermined ratio of the substances to be mixed
    • B01F35/88—Forming a predetermined ratio of the substances to be mixed by feeding the materials batchwise
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/8593—Systems
    • Y10T137/85954—Closed circulating system
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/8593—Systems
    • Y10T137/85978—With pump
    • Y10T137/86035—Combined with fluid receiver
    • Y10T137/86067—Fluid sump

Definitions

  • the invention relates to a method and an apparatus for the preparation of liquid mixtures.
  • the invention is particularly, but not exclusively, concerned with the preparation of dilute solutions of concentrated liquids and a diluent, but it should be appreciated that it can be used where mixtures of miscible liquids are required.
  • an apparatus for use in preparing liquid mixtures is proposed, as described in claim 4.
  • a supply of treatment liquid and replenishing liquid can be prepared without the user having to carry out any dimensions with one or the other of these liquids.
  • the standard amount of the first liquid can be supplied to the user as a bottle or the like, which is filled with the standard amount of liquid.
  • the second liquid can then be introduced into a mixing-preventing device until the time when the second container is wordsn filled to the required level.
  • the second liquid is fed to the anti-mixing device and then flows first into the first container to fill it and then flows over and over an overflow at the top of an extension tube and down to fill the second container which is filled with one Display can be equipped, which indicates the reached filling level and possibly interrupts the inflow of the second liquid.
  • extension tube pieces of different lengths can be provided, as mentioned in subclaim 7, and the height of the display can be adjusted.
  • the device comprises a trough or tank 1, which is advantageously made of plastic and is divided by a partition 2 into a first or refill container 3 and a second or treatment container 4.
  • the outflow pipe 5 is connected via a feed pipe 8 to an inlet 7 in the base wall of the treatment container.
  • Another outlet in the base wall of the container is connected via a feed pipe 10 to a pump 11, which in turn is connected to a pipe 12 leading into the upper end of the treatment container 4.
  • a rotatable drum 13 is mounted on bearings (not shown) in the side walls of the treatment tank and is engaged by three guide rollers also mounted in the side walls.
  • sheet material is passed between the rollers 14 and the drum 13 and through a bath of treatment liquid contained in the container 4.
  • the device is particularly suitable for the treatment of photographic material, wherein a developer, fixing or the like treatment liquid is used in the treatment container and a solution of the same treatment liquid, but usually of different strength in the refill container.
  • a developer, fixing or the like treatment liquid is used in the treatment container and a solution of the same treatment liquid, but usually of different strength in the refill container.
  • it has previously been customary to measure two different amounts of the concentrated treatment liquid, to dilute them with different amounts of water and then to pour them into the relevant containers.
  • Concentrated development solutions that are extremely caustic are very often used, while concentrated fixative is acidic and contains sulfite ions that act as reducing agents. It would therefore be highly advantageous if it was no longer necessary to measure different amounts of one or the other of these concentrated solutions.
  • the diluted solutions can now be prepared in a simple manner, without the need to measure the concentrated liquids in question separately.
  • a certain amount of concentrated solution is poured into the container 3.
  • the liquid then fills the container to the level of the overflow 6 and further liquid then flows through the pipe 8 into the container 4, for example to fill it up to the height h 2 , as shown in FIG. 1.
  • the base areas of the containers 3 and 4, the height of the overflow 6 above the base area of the container 3 and the predetermined amount of concentrated liquid are chosen so that when the containers 3 and 4 are subsequently filled with water or another diluent up to a prescribed level, the resulting solutions in the containers have the required concentrations.
  • the device in such a way that when a two-liter normal bottle of concentrated liquid is poured into the container 3, the containers 3 and 4, as shown in FIG. 1, are filled to the levels h 1 and h 2 , respectively , so that when the containers are subsequently filled with water up to the levels h 3 and h 4 , as shown in FIG. 2, solutions of the required strength are obtained.
  • the containers can be filled such that the level of the liquid in each container is the same and just above the outlet 6, and that the height of the liquid in the container 4 is the same or less, but never can be more than the height of the liquid in the container 3.
  • a tubular hollow standpipe 15 is placed on the outlet to increase the level of the overflow from the container 3 to the end 16 of the standpipe.
  • One end 17 of the standpipe is secured by a tight fit and the other or upper end of the standpipe 15 is surrounded by a cup-shaped vessel 18 provided with an outlet 19.
  • Water or another dilution liquid is now introduced into the cup-shaped vessel 18 from a water supply pipe 20 controlled by a tap or valve 21. The water then flows into the cup-shaped vessel and out through the outlet 19 until it fills the container 3 up to the level h 3 equal to the height of the outlet end 16 of the standard tube.
  • the water flows through the outlet 16 of the standard pipe, through the standard pipe 15, the outlet pipe 5 and the feed pipe 8 into the container 4 until the latter is filled to the desired height h 4 , whereupon the water supply is switched off .
  • the height h 4 can be the same or less than the height of the liquid level in the container 3, but never greater.
  • the water supply can be switched off as soon as the user sees that the level in the container 4 has reached a certain mark, but the container 4 is preferably equipped with a liquid level indicator 22.
  • a simple float switch as shown in FIG. 3, in which the float switch 22 is connected in a circuit with display means such as the bell 23 or the warning lamp 24, one or both of which are provided to the Warn users that container 4 has been filled to the required level.
  • Fig. 3 also shows that the float switch can be used to control the valve 21 and can interrupt the water supply as soon as the container 4 to required level has been filled.
  • a number of standpipes 15 of different lengths can be provided and the height of the float switch 22 above the base of the container 4 can be adjusted so that by suitable selection of a standpipe and adjustment of the Switch the strength of the two solutions can be changed.
  • the two containers can be separate from each other, but this is not so advantageous since problems may arise when setting up at different levels or levels.
  • this configuration can be useful if the containers are in fixed positions, since this enables the refill and treatment solution to be prepared in a refill tank that is at a distance from the treatment site, which is particularly advantageous if the operation at the treatment site is used to generate dangerous or harmful fumes.
  • the outlet pipe 5 can be provided in a side wall of the container 3, provided that its overflow outlet 6 can be covered in a liquid-tight manner by a standpipe of a suitable shape.
  • FIG. 4 A particularly preferred modification of the device is shown schematically in FIG. 4.
  • the device shown in FIG. 4 comprises a first or refill tank 33 for refilling developer solution, which is connected to a second or development tank 34 via a feed pipe 38 and feed pipes 310 and 312 and a pump 311.
  • the device further comprises a first or refill tank 43 for fixers, which is connected to a second or fixer tank 44 via a feed pipe 48 and feed pipes 410 and 412 2 and a pump 411.
  • the first two tanks 33 and 43 are arranged side by side, while the developing tank and the fixing tank are arranged so that photographic material is passed first through the developing tank and by means of rotatable drums, not shown in Fig. 4, but the same as those in Figs 1 and 2 are shown, can then be passed through the fixing tank.
  • the device according to FIG. 4 represents an impressively simple device for preparing and using developing and fixing solutions for photographic material.
  • the present invention is primarily concerned with the preparation of photographic processing solutions by diluting concentrated liquids with water, the invention is of course more widely applicable and can be used to prepare other mixtures of miscible liquids in desired concentrations.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Accessories For Mixers (AREA)
  • Photographic Processing Devices Using Wet Methods (AREA)

Description

Die Erfindung betrifft ein Verfahren und ein Gerät für die Zubereitung von flüssigen Mischungen. Die Erfindung befaßt sich insbesondere, aber nicht ausschließlich, mit der Zubereitung von verdünnten Lösungen aus konzentrierten Flüssigkeiten und einem Verdünnungsmittel, aber es ist dabei zu beachten, daß sie angewandt werden kann, wo Mischungen von mischbaren Flüssigkeiten verlangt werden.The invention relates to a method and an apparatus for the preparation of liquid mixtures. The invention is particularly, but not exclusively, concerned with the preparation of dilute solutions of concentrated liquids and a diluent, but it should be appreciated that it can be used where mixtures of miscible liquids are required.

Bei vielen Fabrikationsverfahren oder bei Verfahren, in welchen ein Material in einer Flüssigkeit behandelt wird, ist die möglichst genaue und möglichst Schnelle Zubereitung von Behandlungsflüssigkeiten vorbestimmter Konzentration erforderlich. In vielen Fällen ist es wüchenswert, ein Bad einer Behandlungsflüssigkeit einer bestimmten Stärke und ein Bad einer Auffüllflüssigkeit der gleichen oder einer unterschiedlichen Stärke zuzubereiten, um das Bad der Hehandlungsflüssigkeit in dem Maße aufzufüllen, wie Flüssigkeit aus dem Bad durch Verdampfung, chemische Reaktion oder Hinwegführung durch das das Bad passierende Material verloren geht. Dies ist insbesondere der Fall, wenn Bogenmaterial durch das Bad einer Behandlungsflüssigkeit geführt wird.In many manufacturing processes or in processes in which a material is treated in a liquid, the most accurate and fastest possible preparation of treatment liquids of a predetermined concentration is required. In many cases, it is useful to prepare a bath of a treatment liquid of a certain strength and a bath of a replenishing liquid of the same or a different strength in order to replenish the bath of the treatment liquid to the extent that liquid is removed from the bath by evaporation, chemical reaction or by being carried away that material passing through the bathroom is lost. This is particularly the case when sheet material is passed through the bath of a treatment liquid.

Um die beiden Bäder zuzubereiten, ist es erforderlich viermal Flüssigkeiten abzumessen, wobei es sich zweimal um das Abmessen von konzentrierten Flüssigkeiten handelt und zweimal um dasjenige von Verdünnungsmaterial. Ist die konzentrierte Flüssigkeit hochgradig ätzend oder sauer oder ist sie in anderer Weise gesundheitsschädlich, so ist es offenbar unerwünscht, eine Anzahl solcher Abmessungen mit der konzentrierten Flüssigkeit durchzuführen.To prepare the two baths, it is necessary to measure liquids four times, twice measuring concentrated liquids and twice using dilution material. If the concentrated liquid is highly caustic or acidic or is otherwise harmful to health, it is obviously undesirable to perform a number of such measurements on the concentrated liquid.

Es ist daher eine Aufgabe der Erfindung, ein Verfahren und ein Gerät zu schaffen, mit denen flüssige Mischungen für ein Behandlungsbad und ein diesem angepaßtes Auffüllbad leicht und einfach und vorzugsweise so zubereitet werden . können, daß durch einen Benutzer keine Messungen irgendwelcher Art mit der einen oder anderen Flüssigkeit durchgeführt werden müssen.It is therefore an object of the invention to provide a method and an apparatus with which liquid mixtures for a treatment bath and a filler bath adapted thereto can be prepared easily and simply and preferably in this way. may mean that no measurements of any kind have to be carried out by one user with one or the other liquid.

Entsprechend einem ersten Aspekt der vorliegenden Erfindung wird daher ein Verfahren der im Patentanspruch 1 beschriebenen Art vorgeschlagen.According to a first aspect of the present invention, a method of the type described in claim 1 is therefore proposed.

Entsprechend einem anderen Aspekt der vorliegenden Erfindung wird ein Gerät zur Verwendung beim Zubereiten von flüssigen Mischungen vorgeschlagen, wie es im Patentanspruch 4 beschrieben ist.According to another aspect of the present invention, an apparatus for use in preparing liquid mixtures is proposed, as described in claim 4.

Bevorzugte Maßnahmen des Verfahrens nach der Erfindung sind in den Unteransprüchen 2 und 3, und bevorzugte Merkmale des Geräts nach der Erfindung sind in den Unteransprüchen 5 bis 9 beschrieben.Preferred measures of the method according to the invention are described in subclaims 2 and 3, and preferred features of the device according to the invention are described in subclaims 5 to 9.

Durch Hineingießen einer Standardmenge einer ersten Flüssigkeit, z.B. einer konzentrierten Flüssigkeit in einen ersten Behälter des Geräts und durch die anschließende Eingabe eines Vorrats einer zweiten Flüssigkeit, z.B. eines Verdünnungsmittels, bis ein zweiter Behälter des Geräts bis zu einem vorgegebenen Pegel gefüllt ist, kann ein Vorrat an Behandlungsflüssigkeit und an Auffüllflüssigkeit zubereitet werden, ohne daß der Benutzer irgendwelche Abmessungen mit der einen oder der anderen dieser Flüssigkeiten durchzuführen braucht. In diesem Zusammenhang verdient Beachtung, daß die Standardmenge der ersten Flüssigkeit dem Benutzer als Flasche oder dergleichen Behältnis geliefert werden kann, welches mit der Standardflüssigkeitsmenge gefüllt ist.By pouring a standard amount of a first liquid, e.g. a concentrated liquid into a first container of the device and then entering a supply of a second liquid, e.g. of a diluent, until a second container of the device is filled to a predetermined level, a supply of treatment liquid and replenishing liquid can be prepared without the user having to carry out any dimensions with one or the other of these liquids. In this connection, it should be noted that the standard amount of the first liquid can be supplied to the user as a bottle or the like, which is filled with the standard amount of liquid.

Nach der Einführung der ersten Flüssigkeit ist es besonders einfach, die erforderlichen Lösungen zuzubereiten, da die zweite Flüssigkeit dann in eine das Vermischen verhindernde Einrichtung eingeführt werden kann, bis zu dem Zeitpunkt wo der zweite Behälter bis zu dem geforderten Pegel gefüllt wordsn ist. Die zweite Flüssigkeit wird der das Vermischen verhindernden Einrichtung zugeführt und fließt dann zuerst in den ersten Behälter, um ihn zu füllen, und strömt dann über einen Überlauf am oberen Ende eines Verlängerungsrohres und durch dieses abwärts, um den zweiten Hehälter zu füllen, der mit einer Anzeige ausgerüstet sein kann, die das Erreichen des gewüchten Füllungspegels anzeigt und gegebenenfalls den Zufluß der zweiten Flüssigkeit unterbricht.After the introduction of the first liquid, it is particularly easy to prepare the required solutions, since the second liquid can then be introduced into a mixing-preventing device until the time when the second container is wordsn filled to the required level. The second liquid is fed to the anti-mixing device and then flows first into the first container to fill it and then flows over and over an overflow at the top of an extension tube and down to fill the second container which is filled with one Display can be equipped, which indicates the reached filling level and possibly interrupts the inflow of the second liquid.

Um die Verwendung der Behälter für die Zubereitung von Lösungen unterschiedlicher Konzentrationen zu gestatten, können, wie im Unteranspruch 7 erwähnt, Verlängerungsrohrstücke unterschiedlicher Länge vorgesehen sein, und die Anzeige kann in ihrer Höhe verstellbar sein.In order to allow the use of the containers for the preparation of solutions of different concentrations, extension tube pieces of different lengths can be provided, as mentioned in subclaim 7, and the height of the display can be adjusted.

Weitere Merkmale und Zwecke des Verfahrens und des Geräts nach der vorliegenden Erfindung ergeben sich aus den Ansprüchen.Further features and purposes of the method and the device according to the present invention result from the claims.

Zum leichteren Verständnis der Erfindung wird nunmehr auf die beiliegende Zeichnung Bezug genommen, welche zwei Ausführungsformen als Beispiele schematisch veranschaulicht, und in der:

  • Fig. 1 eine Querschnittsansicht durch ein Gerät mit einem Behandlungsbehälter und einem Auffüllbehälter,
  • Fig. 2 eine derjenigen von Fig. 1 ähnliche Ansicht der mit verdünnten Lösungen gefüllten Behälter,
  • Fig. 3 ein Schaltbild und
  • Fig. 4 eine schematische Draufsicht auf ein Verbundgerät mit zwei Behandlungsbehältern und zwei Auffüllbehältern
For an easier understanding of the invention, reference is now made to the accompanying drawing, which schematically illustrates two embodiments as examples, and in which:
  • 1 is a cross-sectional view through a device with a treatment container and a refill container,
  • 2 is a view similar to that of FIG. 1 of the containers filled with dilute solutions,
  • Fig. 3 is a circuit diagram and
  • Fig. 4 is a schematic plan view of a composite device with two treatment containers and two refill containers

darstellt.represents.

Auf die Figuren 1 und 2 der Zeichnung bezugnehmend, wird darin ein Gerät zur Zubereitung von zwei verdünnten Lösungen verschiedener Stärke aus einer vorgegebenen Menge konzentrierter Lösung gezeigt. Das Gerät umfaßt einenTrog oder Tank 1, der Vorteilhaft aus Kunststoff hergestellt wird und durch eine Trennwand 2 in einen ersten oder Nachfüllbehälter 3 und einen zweiten oder Behandlungsbehälter 4 unterteilt ist.Referring to Figures 1 and 2 of the drawing, there is shown an apparatus for preparing two dilute solutions of different strengths from a given amount of concentrated solution. The device comprises a trough or tank 1, which is advantageously made of plastic and is divided by a partition 2 into a first or refill container 3 and a second or treatment container 4.

Ein Ausflußrohr 5, dessen Auslaßöffnung 6 sich im Abstand h1 über der Basis des Behälters befindet, ist in der Basiswandung des Nach üllbehälters 3 gelegen. Das Ausflußrohr 5 ist über ein Speiserohr 8 mit einem Einlaß 7 in der Basiswandung des Behandlungsbehälters verbunden. Ein weiterer Auslaß in der Basiswandung des Behälters ist über ein Zufuhrrohr 10 an eine Pumpe 11 angeschlossen, die ihrerseits mit einem in das obere Ende des Behandlungsbehälters 4 führenden Rohr 12 verbunden ist.An outflow pipe 5, the outlet opening 6 of which is located at a distance h 1 above the base of the container, is located in the base wall of the oil container 3. The outflow pipe 5 is connected via a feed pipe 8 to an inlet 7 in the base wall of the treatment container. Another outlet in the base wall of the container is connected via a feed pipe 10 to a pump 11, which in turn is connected to a pipe 12 leading into the upper end of the treatment container 4.

Eine drehbare Trommel 13 ist auf Lagern (nicht gezeigt) in den Seitenwänden des Behandlungsbehälters montiert,und mit ihr stehen drei ebenfalls in den Seitenwänden gelagerte Führungswalzen in Eingriff.A rotatable drum 13 is mounted on bearings (not shown) in the side walls of the treatment tank and is engaged by three guide rollers also mounted in the side walls.

Bei der Benutzung des oben beschriebenen Geräts wird Bogenmaterial zwischen den Walzen 14 und der Trommel 13 und durch ein Bad von im Behälter 4 enthaltener Behandlungsflüssigkeit hindurchgeführt.When using the device described above, sheet material is passed between the rollers 14 and the drum 13 and through a bath of treatment liquid contained in the container 4.

In dem Maße, wie Flüssigkeit aus dem Behälter durch Mitnahme auf dem Bogenmaterial verloren geht, wird Nachfüllflüssigkeit in erforderlichen Abständen mittels der Pumpe 11 aus dem Behälter 3 in den Behälter 4 gepumpt. Das Gerät ist besonders geeignet zur Behandlung von photographischem Material, wobei eine Entwickler-, Fixierungs- oder dergleichen Behandlungsflüssigkeit im Behandlungsbehälter und eine Lösung der gleichen Behandlungsflüssigkeit, gewöhnlich jedoch von unterschiedlicher Stärke im Nachfüllbehälter verwendet wird. Um die beiden Lösungen herzustellen, war es bisher üblich, zwei verschiedene Mengen der konzentrierten Behandlungsflüssigkeit abzumessen, sie mit unterschiedlichen Mengen Wasser zu verdünnen und dann in die betreffenden Behälter zu schütten. Sehr oft werden konzentrierte Entwicklungslösungen verwendet, die äußerst ätzend sind, während konzentrierte Fixierlösung sauer ist und Sulfitionen, die als Reduktionsmittel wirken, enthält. Es würde daher höchst vorteilhaft sein, wenn das Abmessen unterschiedlicher Mengen der einen oder anderen dieser konzentrierten Lösungen nicht mehr nötig wäre. Mit dem vorliegenden Gerät können nun die verdünnten Lösungen in einfacher Weise zubereitet werden, wobei die Notwendigkeit, die in Frage kommenden konzentrierten Flüssigkeiten getrennt abzumessen, entfällt.To the extent that liquid is lost from the container by being carried along on the sheet material, refill liquid is pumped from the container 3 into the container 4 at required intervals by means of the pump 11. The device is particularly suitable for the treatment of photographic material, wherein a developer, fixing or the like treatment liquid is used in the treatment container and a solution of the same treatment liquid, but usually of different strength in the refill container. In order to produce the two solutions, it has previously been customary to measure two different amounts of the concentrated treatment liquid, to dilute them with different amounts of water and then to pour them into the relevant containers. Concentrated development solutions that are extremely caustic are very often used, while concentrated fixative is acidic and contains sulfite ions that act as reducing agents. It would therefore be highly advantageous if it was no longer necessary to measure different amounts of one or the other of these concentrated solutions. With the present device, the diluted solutions can now be prepared in a simple manner, without the need to measure the concentrated liquids in question separately.

Um die erforderlichen Lösungen herzustellen, wird eine bestimmte Menge an konzentrierter Lösung in den Behälter 3 geschüttet. Die Flüssigkeit füllt dann den Behälter bis zum Pegel des Überlaufs 6 und weitere Flüssigkeit fließt dann durch das Rohr 8 in den Behälter 4, um diesen z.B., wie in Fig. 1 gezeigt, bis zur Höhe h2 zu füllen. Es ist in diesem Zusammenhang zu beachten, daß die Basisflächen der Behälter 3 und 4, die Höhe des Überlaufs 6 über der Grundfläche des Behälters 3 und die vorbestimmte Menge an konzentrierter Flüssigkeit so gewählt werden, daß beim darauffolgenden Auffüllen der Behälter 3 und 4 mit Wasser oder einem anderen Verdünnungsmittel bis zu einer vorgeschriebenen Höhe die hieraus resultierenden Lösungen in den Behältern die geforderten Konzentrationen aufweisen. Es ist z.B. vorteilhaft, das Gerät so zu bauen, daß beim Eingießen einer Zweiliter-Normalflasche an konzentrierter Flüssigkeit in den Behälter 3 die Behälter 3 und 4, wie in Fig. 1 gezeigt, bis zu den Pegeln h1 bzw. h2 gefüllt werden, so daß beim nachfolgenden Füllen der Behälter mit Wasser bis zu den Pegeln h3 und h4, wie in Fig. 2 gezeigt, Lösungen der erforderlichen Stärke erhalten werden. Es ist auch einzusehen, daß die Behälter in solcher Weise gefüllt werden können, daß der Pegel der Flüssigkeit in jedem Behälter der gleiche ist und gerade über dem Auslaß 6 liegt, und daß die Höhe der Flüssigkeit im Behälter 4 die gleiche oder weniger, aber niemals mehr als die Höhe der Flüssigkeit im Behälter 3 betragen kann.In order to prepare the required solutions, a certain amount of concentrated solution is poured into the container 3. The liquid then fills the container to the level of the overflow 6 and further liquid then flows through the pipe 8 into the container 4, for example to fill it up to the height h 2 , as shown in FIG. 1. It should be noted in this connection that the base areas of the containers 3 and 4, the height of the overflow 6 above the base area of the container 3 and the predetermined amount of concentrated liquid are chosen so that when the containers 3 and 4 are subsequently filled with water or another diluent up to a prescribed level, the resulting solutions in the containers have the required concentrations. It is advantageous, for example, to construct the device in such a way that when a two-liter normal bottle of concentrated liquid is poured into the container 3, the containers 3 and 4, as shown in FIG. 1, are filled to the levels h 1 and h 2 , respectively , so that when the containers are subsequently filled with water up to the levels h 3 and h 4 , as shown in FIG. 2, solutions of the required strength are obtained. It will also be appreciated that the containers can be filled such that the level of the liquid in each container is the same and just above the outlet 6, and that the height of the liquid in the container 4 is the same or less, but never can be more than the height of the liquid in the container 3.

Nach dem Eingießen der konzentrierten Flüssigkeit in das Gerät wird ein röhrenförmiges hohles Standrohr 15 auf den Auslaß aufgesetzt, um den Pegel des Überlaufs aus dem Behälter 3 bis zum Ende 16 des Standrohres zu erhöhen. Das eine Ende 17 des Standrohres wird durch Festsitz gesichert und das andere oder obere Ende des Standrohrs 15 ist von einem mit einem Auslaß 19 versehenen becherförmigen Gefäß 18 umgeben. Wasser oder eine andere Verdünnungsflüssigkeit wird nunmehr in das becherförmige Gefäß 18 aus einem durch einen Hahn oder ein Ventil 21 gesteuerten Wasserzuleitungsrohr 20 eingeführt. Das Wasser fließt dann in das becherförmige Gefäß und durch den Auslaß 19 wieder hinaus, bis es den Behälter 3 bis zum Pegel h3 gleich der Höhe des Auslaß-endes 16 des Standardrohres füllt. Ist der Behälter 3 gefüllt so fließt das Wasser durch den Auslaß 16 des Standardrohres, durch das Standardrohr 15, das Auslaßrohr 5 und das Zuleitungsrohr 8 in den Behälter 4, bis der letztere bis zur gewünschten Höhe h4 gefüllt ist, worauf die Wasserzufuhr abgeschaltet wird. Die Höhe h4 kann dabei dieselbe oder geringer sein als die Höhe des Flüssigkeitspegels im Behälter 3, jedoch niemals größer.After pouring the concentrated liquid into the device, a tubular hollow standpipe 15 is placed on the outlet to increase the level of the overflow from the container 3 to the end 16 of the standpipe. One end 17 of the standpipe is secured by a tight fit and the other or upper end of the standpipe 15 is surrounded by a cup-shaped vessel 18 provided with an outlet 19. Water or another dilution liquid is now introduced into the cup-shaped vessel 18 from a water supply pipe 20 controlled by a tap or valve 21. The water then flows into the cup-shaped vessel and out through the outlet 19 until it fills the container 3 up to the level h 3 equal to the height of the outlet end 16 of the standard tube. If the container 3 is filled, the water flows through the outlet 16 of the standard pipe, through the standard pipe 15, the outlet pipe 5 and the feed pipe 8 into the container 4 until the latter is filled to the desired height h 4 , whereupon the water supply is switched off . The height h 4 can be the same or less than the height of the liquid level in the container 3, but never greater.

Die Wasserzufuhr kann abgeschaltet werden, sobald der Benutzende sieht, daß der Pegel im Behälter 4 eine bestimmte Markierung erreicht hat, doch wird der Behälter 4 bevorzugt mit einem Flüssigkeitsstandanzeiger 22 ausgestattet. Dies kann vorteilhaft mittels eines einfachen Schwimmerschalters geschehen, wie ihn die Fig. 3 zeigt, in welcher der Schwimmerschalter 22 in einem Schaltkreis mit Anzeigemitteln wie z.B. der Glocke 23 oder der Warnlampe 24 verbunden ist, wobei eines von beiden oder beide vorgesehen sind, um den Benutzer zu warnen, daß der Behälter 4 bis zum erforderlichen Pegel gefüllt worden ist. Fig. 3 zeigt auch, daß der Schwimmerschalter zur Steuerung des Ventils 21 verwendet werden und die Wasserzufuhr unterbrechen kann, sobald der Behälter 4 bis zum geforderten Pegel gefüllt worden ist.The water supply can be switched off as soon as the user sees that the level in the container 4 has reached a certain mark, but the container 4 is preferably equipped with a liquid level indicator 22. This can be done advantageously by means of a simple float switch, as shown in FIG. 3, in which the float switch 22 is connected in a circuit with display means such as the bell 23 or the warning lamp 24, one or both of which are provided to the Warn users that container 4 has been filled to the required level. Fig. 3 also shows that the float switch can be used to control the valve 21 and can interrupt the water supply as soon as the container 4 to required level has been filled.

Wenn es erwünscht ist, Lösungen unterschiedlicher Stärke unter Verwendung des gleichen Geräts zu erzeugen, so kann eine Anzahl Standrohre 15 verschiedener Länge vorgesehen und die Höhe des Schwimmerschalters 22 über der Grundfläche des Behälters 4 verstellbar sein, so daß durch geeignete Auswahl eines Standrohres und Verstellen des Schalters die Stärke der beiden Lösungen verändert werden kann.If it is desired to produce solutions of different strengths using the same device, a number of standpipes 15 of different lengths can be provided and the height of the float switch 22 above the base of the container 4 can be adjusted so that by suitable selection of a standpipe and adjustment of the Switch the strength of the two solutions can be changed.

Es ist dabei in Betracht zu ziehen, daß an dem soeben beschriebenen Gerät viele Abänderungen vorgenommen werden können. Die beiden Behälter können von einander getrennt sein, was aber nicht so vorteilhaft ist, da beim Aufstellen auf von dem oder den beabsichtigten verschiedenen Niveaus Probleme auftreten können. Hingegen kann diese Ausgestaltung von Nutzen sein, wenn die Behälter sich in festen Stellungen befinden, da dies die Zubereitung der Nachfüll- und der Behandlungslösung in einem im Abstand vom Behandlungsort gelegenen Nachfülltank ermöglicht, was besonders vorteilhaft ist, wenn der Betrieb am Behandlungsort zur Erzeugung von gefährlichen oder gesundheitsschädlichen Dämpfen führt. Weiter kann das Auslaßrohr 5 in einer Seitenwand des Behälters 3 vorgesehen sein, vorausgesetzt, daß sein Überlaufauslaß 6 flüssigkeitsdicht durch ein Standrohr geeigneter Form überdeckt werden kann.It should be considered that many changes can be made to the device just described. The two containers can be separate from each other, but this is not so advantageous since problems may arise when setting up at different levels or levels. On the other hand, this configuration can be useful if the containers are in fixed positions, since this enables the refill and treatment solution to be prepared in a refill tank that is at a distance from the treatment site, which is particularly advantageous if the operation at the treatment site is used to generate dangerous or harmful fumes. Furthermore, the outlet pipe 5 can be provided in a side wall of the container 3, provided that its overflow outlet 6 can be covered in a liquid-tight manner by a standpipe of a suitable shape.

Eine besonders bevorzugte Abänderung des Geräts ist schematisch in Fig. 4 dargestellt. Das in Fig. 4 gezeigte Gerät umfaßt einen ersten oder Nachfülltank 33 zum Nachfüllen von Entwicklerlösung, der über ein Zuleitungsrohr 38 und Speiserohre 310 und 312 sowie eine Pumpe 311 mit einem zweiten oder Entwicklungstank 34 verbunden ist. Das Gerät umfaßt weiter einen ersten oder Nachfülltank 43 für Fixierer, der über ein Zufuhrrohr 48 und Speiserohre 410 und 412 2 sowie eine Pumpe 411 mit einem zweiten oder Fixiertank 44 verbunden ist. Wie ersichtlich sind die beiden ersten Tanks 33 und 43 nebeneinander angeordnet, während der Entwicklungstank und der Fixiertank so angeordnet sind, daß photographisches Material zuerst durch den Entwicklungstank und mittels drehbarer Trommeln, die nicht in Fig. 4 gezeigt, aber die gleichen wie die in Figuren 1 und 2 gezeigten sind, anschließend durch den Fixiertank geführt werden kann. Es ist ersichtlich, daß das Gerät nach Fig. 4 eine bestechend einfache Vorrichtung zum Zubereiten und Verwenden von Entwickler-und Fixierlösungen für photographisches Material darstellt.A particularly preferred modification of the device is shown schematically in FIG. 4. The device shown in FIG. 4 comprises a first or refill tank 33 for refilling developer solution, which is connected to a second or development tank 34 via a feed pipe 38 and feed pipes 310 and 312 and a pump 311. The device further comprises a first or refill tank 43 for fixers, which is connected to a second or fixer tank 44 via a feed pipe 48 and feed pipes 410 and 412 2 and a pump 411. As can be seen, the first two tanks 33 and 43 are arranged side by side, while the developing tank and the fixing tank are arranged so that photographic material is passed first through the developing tank and by means of rotatable drums, not shown in Fig. 4, but the same as those in Figs 1 and 2 are shown, can then be passed through the fixing tank. It can be seen that the device according to FIG. 4 represents an impressively simple device for preparing and using developing and fixing solutions for photographic material.

Während die vorliegende Erfindung sich vor allem mit der Zubereitung von photographischen Behandlungslösungen durch das Verdünnen konzentrierter Flüssigkeiten mit Wasser befaßt, ist die Erfindung selbstverständlich breiter anwendbar und kann zur Zubereitung von anderen Mischungen mischbarer Flüssigkeiten in gewünschten Konzentrationen dienen.While the present invention is primarily concerned with the preparation of photographic processing solutions by diluting concentrated liquids with water, the invention is of course more widely applicable and can be used to prepare other mixtures of miscible liquids in desired concentrations.

Claims (9)

1. Method for preparing liquid mixtures in a first and in a second container (3,4) by introducing different amounts of a first and a second liquid into each of these containers, characterized in that a measured quantity of the first liquid is introduced into the first container (3), which has an outlet (6) at a distance from the bottom of the container, there being connecting means (8) from the outlet (6) of the First container to an inlet (7) of the second container (4) whereby liquid can flow under the effect of gravity through the said outlet (6) into the said second container (4); that the measured quantity of first liquid introduced into the first container (3) is greater than the amount which can be retained in the first container, whereby a proportion of the said liquid flows through the said connecting means (8) into the second container (4); that the height (hl) of the said outlet (6) above the basal area of the first container (3) and the basal areas of the containers (3,4) are selected such that a desired distribution of the first liquid between the two containers takes place; that an extension tube (15), which is equipped at its upper end with an overflow outlet (16) and with a vessel (18) preventing a mixture of further infed liquid after the first container (3) is filled, is fitted onto the said outlet (6); and that the second liquid is introduced into the said mixture-preventing vessel (18) from which it firstly flows into the first container (3) until the latter is filled to the level of the overflow outlet (16) and theheafter through the said overflow outlet (16) into the second container (4) without substantially mixing with the liquid in the first container (3).
2. Method according to Claim 1, characterized in that an electrical signal is generated when the second container (4) is filled to a certain level, and that the electrical signal is used to produce an audible or visible warning, or to control the introduction of the second liquid.
3. A method according to Claim 1 or 2, characterized in that the first liquid is a concentrated liquid and the second liquid is a diluent-
4. Apparatus for use in the preparation of liquid mixtures in two containers, with a first and a second container (3,4) and means (8) connecting these containers with each other, characterized in that the first container (3) has an outlet (6) at a distance from the bottom of the container, whereby the height (hi) of the outlet (6) above the bottom of the container and the basal area of the container (3) are selected such that a predetermined amount of a first liquid can be retained in the container before further liquid overflows into the said outlet (6); that the second container (4) has an inlet (7); that connecting means (8) are provided, which connect the outlet (6) of the first container (3) to the inlet (7) of the second container (4) and permit liquid overflowing into the said outlet (6) to flow under the effect of gravity into the second container; that an extension tube (15) is provided, which is able to be placed onto the said outlet (6), whereby the extension tube (15) has at its upper end an overflow outlet (16) and a vessel (18) which after the first container (3) is filled prevents mixing of further infed liquid, which vessel is able to receive an inflow of a second liquid; that the arrangement is such that by pouring in a measured quantity of the first liquid to be mixed in first container (3), in the absence of the extension tube (15), a predetermined amount remains in the container and the excess flows through the said connecting means (8) into the second container (4), whilst after the extension tube (15) is fitted to the said outlet (6), a the second liquid can be introduced into the said mixture-preventing vessel (18) such that this second liquid can flow firstly from the latter vessel (18) into the first container (3) to fill this up to the level of the overflow outlet (16) and that thereafter it can flow through the overflow outlet into the second container (4) without substantially mixing with the liquid in the first container, whereby in the said containers liquid mixtures are prepared, the concentrations of which are determined by the basal areas of the containers and by the height of the level above the bottoms of the containers reached by the first liquid and by the mixtures of the first and second liquid in the said containers (3,4).
5. Apparatus according to Claim 4, characterized in that the mixture-preventing vessel (18) is a cup-shaped container arranged around the overflow outlet (16) of the extension tube (15), which container has an outlet (19) in the direction of the first container (3).
6. Apparatus according to Claim 4 or 5, characterized in that an indicating means (21) is provided which gives an audible or visible warning when the level of the liquid in the second container has reached a predetermined level, or in the above mentioned case, interrups the inflow of the second liquid.
7. Apparatus according to Claim 6; characterized in that the indicating means (21) is adjustable to enable the predetermined level to be varied, and that a plurality of extension tubes (15) of different lengths is provided, which can be used in the preparation of mixtures of different concentrations.
8. Apparatus according to one of Claims 4 to 7, characterized in that one of the said containers is a treatment container (4) in which material can be subjected to a treatment in a bath of liquid, and that the other container is a replenishment container (3); and that through the connecting means (8) liquid can arrive from the replenishment container (3) into the treatment container (4) to make up losses of liquid in the latter.
9. Apparatus according to Claim 8, characterized in that a plurality of replenishment containers (33.43) is provided, each of which is appropriately connected to an associated container of a pluraity of treatment containers (34,44), and that the treatment containers (34,44) are arranged such that successive treatments may be carried out on a material which is passed in turn through each of the treatment containers (34,44).
EP19830810438 1982-10-04 1983-09-28 Method and apparatus for preparing liquid mixtures Expired EP0105842B1 (en)

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GB8228310 1982-10-04
GB8228310 1982-10-04
GB8310702 1983-04-20
GB838310702A GB8310702D0 (en) 1983-04-20 1983-04-20 Solution mixing device

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EP0105842A1 EP0105842A1 (en) 1984-04-18
EP0105842B1 true EP0105842B1 (en) 1986-04-09

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DE3362940D1 (en) 1986-05-15
EP0105842A1 (en) 1984-04-18

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