EP1674262A2 - Fluid supply device for a printing machine cleaning apparatus - Google Patents

Fluid supply device for a printing machine cleaning apparatus Download PDF

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Publication number
EP1674262A2
EP1674262A2 EP05022339A EP05022339A EP1674262A2 EP 1674262 A2 EP1674262 A2 EP 1674262A2 EP 05022339 A EP05022339 A EP 05022339A EP 05022339 A EP05022339 A EP 05022339A EP 1674262 A2 EP1674262 A2 EP 1674262A2
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EP
European Patent Office
Prior art keywords
valve
liquid
supply device
compressed air
intermediate container
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
EP05022339A
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German (de)
French (fr)
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EP1674262B1 (en
EP1674262A3 (en
Inventor
Jürgen Köhn
Arnold Gold
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Baldwin Germany GmbH
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Baldwin Germany GmbH
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Publication of EP1674262A3 publication Critical patent/EP1674262A3/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F35/00—Cleaning arrangements or devices
    • B41F35/04—Cleaning arrangements or devices for inking rollers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
    • B08B3/02—Cleaning by the force of jets or sprays
    • B08B3/022—Cleaning travelling work
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
    • B08B3/02—Cleaning by the force of jets or sprays
    • B08B3/024—Cleaning by means of spray elements moving over the surface to be cleaned
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F35/00—Cleaning arrangements or devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F35/00—Cleaning arrangements or devices
    • B41F35/06—Cleaning arrangements or devices for offset cylinders
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41P—INDEXING SCHEME RELATING TO PRINTING, LINING MACHINES, TYPEWRITERS, AND TO STAMPS
    • B41P2235/00—Cleaning
    • B41P2235/10—Cleaning characterised by the methods or devices
    • B41P2235/26—Spraying devices

Definitions

  • the invention relates to a liquid supply device for a printing machine cleaning device for cleaning cylinders and rollers of printing machines, in particular of offset printing machines.
  • a liquid supply device of this type is known from DE 20 2004 006 534 U1.
  • the invention aims to solve the problem of providing a low-cost and functionally reliable supply device. This object is achieved according to the invention by the features of claim 1.
  • FIG. 1 is a schematic representation of a liquid supply device according to the invention.
  • the liquid may be fresh water, for example tap water from the local water supply network, or another washing liquid or solvent or a mixture or emulsion of two or more of the aforementioned substances.
  • the liquid supply device comprises an intermediate container 2, which is closed pressure-tight. Furthermore, a vacuum cleaner 4 is provided, for example in the form of an injector or preferably ejector.
  • An air valve assembly 6 includes a controllably switchable first valve 8 in a first compressed air path 10 between a compressed air source 12 and a compressed air inlet 14 of the vacuum cleaner 4, a controllably switchable second valve 16 in a second compressed air path 18 between the compressed air source 12 and the intermediate container 2, and a controllable switchable third valve 20 in a third compressed air path 22 between the intermediate container 2 and a suction air inlet 24 of the vacuum cleaner 4.
  • All or some of the valves of the compressed air valve assembly 6 may be individual valves or part of a valve block having the function of multiple valves.
  • the second compressed air path 18 and the third compressed air path 22 can each be separated or in fluid communication with the interior of the intermediate container 2 via a common connection line 26.
  • the compressed air source 12 may be a compressed air connection element for connection to an air compressor or to a compressed air supply network or to a compressed air storage tank, either directly or via a pressure regulator.
  • the compressed air source 12 includes an air compressor 28 and a pressure regulator 30 at the outlet of the air compressor.
  • z. B. upstream or downstream of a pressure regulator 30, a compressed air storage tank 32 may be provided, from which for a short time more compressed air can be removed than from the air compressor 28th
  • the vacuum cleaner 4 further has an air outlet 25 for discharging air 27 into the outside atmosphere, preferably via a filter or moisture separator 29.
  • a remplisstiksauslassweg 42 from the intermediate container 2 includes a liquid valve assembly 44 which includes at least one switchable remplisstechniksabgabeventil 46, 48, 50, etc., the valve outlet side 47 and 49 and 51 is connected via a fluid line to the cleaning device.
  • the liquid valve assembly 44 includes a liquid dispensing valve 48, the outlet side 49 of which is connected via a liquid line 52 to a spray device 54 of a cleaning device 56 for spraying liquid onto a cylinder 58 (or a roller, such as a paint roller).
  • the cleaning device may include a squeegee 60 for doctoring the liquid softened paint from the surface of the cylinder or roller 58. Further, as another example, FIG.
  • FIG. 1 shows a discharge line 62 through which the outlet side 51 of the liquid discharge valve 50 is connected to a nozzle device 64 for spraying liquid onto a wash cloth 66 of a cleaning device 68.
  • the washing cloth 66 is engageable with the circumference of a cylinder 70 or the circumference of a roller to clean its peripheral surface.
  • All or some of the valves of the liquid valve assembly 44 may be individual valves or part of a valve block having the function of multiple valves.
  • An electrical control device 72 shown schematically in Fig. 1 is used to switch the switchable valves such that for sucking liquid 36 from the reservoir 34 into the intermediate container 2, the first valve 8 and the third valve 20 and the remindströmsperrventil 40 are open, whereas the second valve 16 and the liquid dispensing valve assembly 44 are closed, and that for dispensing liquid 36 from the intermediate container 2 to a cleaning device 56 or 68, the first valve 8 and the third valve 20 and the remindströmsperrventil 40 are closed, whereas, the second valve 16 and at least one of the liquid dispensing valves 46, 48 and / or 50 of the liquid dispensing valve assembly 44 are open.
  • the remindströmsperrventil 40 is a check valve which opens by the differential pressure between its input and its output only in the direction from the reservoir 34 to the intermediate container 2, but automatically closes at a pressure in the opposite direction.
  • the remindströmsperrventil 40 may be controllably switchable by the controller 72 valve.
  • the intermediate container 2 has such a size that its liquid supply is sufficient for at least one washing operation in the printing press. For example, its capacity is about two liters.
  • the intermediate container 2 is preferably provided with a level sensor 74 to end the filling operation of the intermediate container 2 when the liquid level reaches the level sensor 74.
  • the level sensor 74 may be a float switch or magnetic or electromagnetic or capacitive or other sensor or switch connected to the signal transmission controller 72.
  • the control device 72 may be designed such that a filling of the intermediate container 2 and / or the supply of liquid from the intermediate container 2 to the printing machine for a washing process can be started manually. According to another embodiment, however, it can also be provided that the filling and / or the liquid supply to the printing machine is automatically triggered by a printing machine control, which is connected to the electrical control 72 for this purpose.
  • the reservoir 34 may be of any type, for example, a standard container in which washing liquid manufacturers supply the washing liquid to the customer, or a custom designed container.
  • a supply cabinet 80 is provided, in which at least the intermediate container 2, the vacuum cleaner 4 and the compressed air valve assembly 6 are housed.
  • the reservoir 34 air compressor 28, pressure regulator 30, compressed air storage tank 32, electrical control device 72 and / or the liquid valve assembly 44.
  • the reservoir 34 especially if it is a larger tank, and / or the air compressor 28, pressure regulator 30 and / or the compressed air storage tank 32 may be disposed outside of the supply cabinet 80.
  • the liquid valve assembly 44 may be housed in the supply cabinet 80 or preferably provided on a printing press.

Landscapes

  • Inking, Control Or Cleaning Of Printing Machines (AREA)
  • Cleaning By Liquid Or Steam (AREA)

Abstract

The liquid supply device is part of a cleaning device for a printing press, which cleans the press cylinders and rolls. Liquid is sucked out of a storage container (34) and sent into an intermediate container (2). Compressed air is then used to expel the liquid from the intermediate container to clean the cylinders and rolls.

Description

Die Erfindung betrifft eine Flüssigkeitsversorgungseinrichtung für eine Druckmaschinen-Reinigungsvorrichtung zum Reinigen von Zylindern und Walzen von Druckmaschinen, insbesondere von Offset-Druckmaschinen.The invention relates to a liquid supply device for a printing machine cleaning device for cleaning cylinders and rollers of printing machines, in particular of offset printing machines.

Eine Flüssigkeitsversorgungseinrichtung dieser Art ist aus der DE 20 2004 006 534 U1 bekannt.A liquid supply device of this type is known from DE 20 2004 006 534 U1.

Durch die Erfindung soll die Aufgabe gelöst werden, eine preiswerte und funktionssichere Versorgungseinrichtung bereitzustellen.
Diese Aufgabe wird gemäß der Erfindung durch die Merkmale von Anspruch 1 gelöst.The invention aims to solve the problem of providing a low-cost and functionally reliable supply device.
This object is achieved according to the invention by the features of claim 1.

Die Erfindung wird im Folgenden mit Bezug auf die beiliegende Zeichnung anhand einer bevorzugten Ausführungsform als Beispiel beschrieben. In der Zeichnung zeigt
Fig. 1 eine schematische Darstellung einer Flüssigkeitsversorgungseinrichtung nach der Erfindung.The invention will be described below with reference to the accompanying drawings with reference to a preferred embodiment as an example. In the drawing shows
Fig. 1 is a schematic representation of a liquid supply device according to the invention.

Die Flüssigkeit kann Frischwasser, beispielsweise Leitungswasser aus dem örtlichen Wasserversorgungsnetz, oder eine andere Waschflüssigkeit oder Lösemittel oder eine Mischung oder Emulsion aus zwei oder mehreren der vorgenannten Substanzen sein.The liquid may be fresh water, for example tap water from the local water supply network, or another washing liquid or solvent or a mixture or emulsion of two or more of the aforementioned substances.

Die Flüssigkeitsversorgungseinrichtung nach der Erfindung enthält einen Zwischenbehälter 2, welcher druckdicht verschlossen ist. Ferner ist ein Unterdrucksauger 4 zum Beispiel in Form eines Injektors oder vorzugsweise Ejektors vorgesehen. Eine Druckluftventilanordnung 6 enthält ein steuerbar umschaltbares erstes Ventil 8 in einem ersten Druckluftweg 10 zwischen einer Druckluftquelle 12 und einem Drucklufteinlass 14 des Unterdrucksaugers 4, ein steuerbar umschaltbares zweites Ventil 16 in einem zweiten Druckluftweg 18 zwischen der Druckluftquelle 12 und dem Zwischenbehälter 2, und ein steuerbar umschaltbares drittes Ventil 20 in einem dritten Druckluftweg 22 zwischen dem Zwischenbehälter 2 und einem Sauglufteinlass 24 des Unterdrucksaugers 4.The liquid supply device according to the invention comprises an intermediate container 2, which is closed pressure-tight. Furthermore, a vacuum cleaner 4 is provided, for example in the form of an injector or preferably ejector. An air valve assembly 6 includes a controllably switchable first valve 8 in a first compressed air path 10 between a compressed air source 12 and a compressed air inlet 14 of the vacuum cleaner 4, a controllably switchable second valve 16 in a second compressed air path 18 between the compressed air source 12 and the intermediate container 2, and a controllable switchable third valve 20 in a third compressed air path 22 between the intermediate container 2 and a suction air inlet 24 of the vacuum cleaner 4.

Alle oder einige der Ventile der Druckluftventilanordnung 6 können einzelne Ventile oder Teil eines Ventilblockes sein, welcher die Funktion von mehreren Ventilen hat.All or some of the valves of the compressed air valve assembly 6 may be individual valves or part of a valve block having the function of multiple valves.

Der zweite Druckluftweg 18 und der dritte Druckluftweg 22 können jeweils getrennt oder über eine gemeinsame Anschlussleitung 26 mit dem Innenraum des Zwischenbehälters 2 in Strömungsverbindung stehen.The second compressed air path 18 and the third compressed air path 22 can each be separated or in fluid communication with the interior of the intermediate container 2 via a common connection line 26.

Die Druckluftquelle 12 kann ein Druckluftanschlusselement zum Anschluss an einen Luftverdichter oder an ein Druckluftversorgungsnetz oder an einen Druckluftspeicherbehälter sein, entweder direkt oder über einen Druckregler. Gemäß der bevorzugten Ausführungsform der Erfindung enthält die Druckluftquelle 12 einen Luftverdichter 28 und einen Druckregler 30 am Ausgang des Luftverdichters. Ferner kann, z. B. stromaufwärts oder stromabwärts eines Druckreglers 30, ein Druckluftspeicherbehälter 32 vorgesehen sein, aus welchem kurzzeitig mehr Druckluft entnehmbar ist als von dem Luftverdichter 28.The compressed air source 12 may be a compressed air connection element for connection to an air compressor or to a compressed air supply network or to a compressed air storage tank, either directly or via a pressure regulator. According to the preferred embodiment of the invention, the compressed air source 12 includes an air compressor 28 and a pressure regulator 30 at the outlet of the air compressor. Furthermore, z. B. upstream or downstream of a pressure regulator 30, a compressed air storage tank 32 may be provided, from which for a short time more compressed air can be removed than from the air compressor 28th

Der Unterdrucksauger 4 hat ferner einen Luftauslass 25 zur Abgabe von Luft 27 in die Außenatmosphäre, vorzugsweise über einen Filter oder Feuchtigkeitsabscheider 29.The vacuum cleaner 4 further has an air outlet 25 for discharging air 27 into the outside atmosphere, preferably via a filter or moisture separator 29.

Zwischen dem Zwischenbehälter 2 und einem Vorratsbehälter 34 für Flüssigkeit 36 befindet sich eine Flüssigkeitstransferleitung 38 mit einem Rückströmsperrventil 40 zur Flüssigkeitsübertragung aus dem Vorratsbehälter 34 in den Zwischenbehälter 2.Between the intermediate container 2 and a reservoir 34 for liquid 36 is a liquid transfer line 38 with a Rückströmsperrventil 40 for liquid transfer from the reservoir 34 into the intermediate container. 2

Ein Flüssigkeitsauslassweg 42 aus dem Zwischenbehälter 2 enthält eine Flüssigkeitsventilanordnung 44, die mindestens ein umschaltbares Flüssigkeitsabgabeventil 46, 48, 50 usw. enthält, dessen Ventilauslassseite 47 bzw. 49 bzw. 51 über eine Flüssigkeitsleitung mit der Reinigungsvorrichtung verbunden ist. Als Beispiel enthält die Flüssigkeitsventilanordnung 44 ein Flüssigkeitsabgabeventil 48, dessen Auslassseite 49 über eine Flüssigkeitsleitung 52 mit einer Sprühvorrichtung 54 einer Reinigungsvorrichtung 56 verbunden ist, um Flüssigkeit auf einen Zylinder 58 (oder eine Walze, beispielsweise eine Farbwalze) zu sprühen. Die Reinigungsvorrichtung kann ein Rakel 60 zum Abrakeln der von der Flüssigkeit aufgeweichten Farbe von der Oberfläche des Zylinders oder Walze 58 aufweisen. Ferner zeigt Fig. 1 als weiteres Beispiel eine Abgabeleitung 62, durch welche die Auslassseite 51 des Flüssigkeitsabgabeventils 50 mit einer Düsenvorrichtung 64 verbunden ist, um Flüssigkeit auf ein Waschtuch 66 einer Reinigungsvorrichtung 68 zu sprühen. Das Waschtuch 66 ist an den Umfang eines Zylinders 70 oder den Umfang einer Walze anstellbar, um dessen Umfangsfläche zu reinigen.A Flüssigkeitsauslassweg 42 from the intermediate container 2 includes a liquid valve assembly 44 which includes at least one switchable Flüssigkeitsabgabeventil 46, 48, 50, etc., the valve outlet side 47 and 49 and 51 is connected via a fluid line to the cleaning device. By way of example, the liquid valve assembly 44 includes a liquid dispensing valve 48, the outlet side 49 of which is connected via a liquid line 52 to a spray device 54 of a cleaning device 56 for spraying liquid onto a cylinder 58 (or a roller, such as a paint roller). The cleaning device may include a squeegee 60 for doctoring the liquid softened paint from the surface of the cylinder or roller 58. Further, as another example, FIG. 1 shows a discharge line 62 through which the outlet side 51 of the liquid discharge valve 50 is connected to a nozzle device 64 for spraying liquid onto a wash cloth 66 of a cleaning device 68. The washing cloth 66 is engageable with the circumference of a cylinder 70 or the circumference of a roller to clean its peripheral surface.

Alle oder einige der Ventile der Flüssigkeitsventilanordnung 44 können einzelne Ventile oder Teil eines Ventilblockes sein, welcher die Funktion von mehreren Ventilen hat.All or some of the valves of the liquid valve assembly 44 may be individual valves or part of a valve block having the function of multiple valves.

Eine in Fig. 1 schematisch dargestellte elektrische Steuereinrichtung 72 dient zum Umschalten der umschaltbaren Ventile derart, dass zum Einsaugen von Flüssigkeit 36 aus dem Vorratsbehälter 34 in den Zwischenbehälter 2 das erste Ventil 8 und das dritte Ventil 20 sowie das Rückströmsperrventil 40 offen sind, wohingegen das zweite Ventil 16 und die Flüssigkeitsabgabeventilanordnung 44 geschlossen sind, und dass zum Abgeben von Flüssigkeit 36 aus dem Zwischenbehälter 2 zu einer Reinigungsvorrichtung 56 oder 68 das erste Ventil 8 und das dritte Ventil 20 sowie das Rückströmsperrventil 40 geschlossen sind, wohingegen das zweite Ventil 16 und mindestens eines der Flüssigkeitsabgabeventile 46, 48 und/oder 50 der Flüssigkeitsabgabeventilanordnung 44 offen sind.An electrical control device 72 shown schematically in Fig. 1 is used to switch the switchable valves such that for sucking liquid 36 from the reservoir 34 into the intermediate container 2, the first valve 8 and the third valve 20 and the Rückströmsperrventil 40 are open, whereas the second valve 16 and the liquid dispensing valve assembly 44 are closed, and that for dispensing liquid 36 from the intermediate container 2 to a cleaning device 56 or 68, the first valve 8 and the third valve 20 and the Rückströmsperrventil 40 are closed, whereas, the second valve 16 and at least one of the liquid dispensing valves 46, 48 and / or 50 of the liquid dispensing valve assembly 44 are open.

Gemäß einer Ausführungsform der Erfindung ist das Rückströmsperrventil 40 ein Rückschlagventil, welches durch den Differenzdruck zwischen seinem Eingang und seinem Ausgang nur in Richtung vom Vorratsbehälter 34 zum Zwischenbehälter 2 öffnet, jedoch bei einem Druck in entgegen gesetzter Richtung automatisch schließt. Gemäß anderen Ausführungsformen der Erfindung kann das Rückströmsperrventil 40 ein von der Steuereinrichtung 72 steuerbar umschaltbares Ventil sein.According to one embodiment of the invention, the Rückströmsperrventil 40 is a check valve which opens by the differential pressure between its input and its output only in the direction from the reservoir 34 to the intermediate container 2, but automatically closes at a pressure in the opposite direction. According to other embodiments of the invention, the Rückströmsperrventil 40 may be controllably switchable by the controller 72 valve.

Der Zwischenbehälter 2 hat eine solche Größe, dass sein Flüssigkeitsvorrat für mindestens einen Waschvorgang in der Druckmaschine ausreicht. Beispielsweise beträgt sein Fassungsvermögen ungefähr zwei Liter.The intermediate container 2 has such a size that its liquid supply is sufficient for at least one washing operation in the printing press. For example, its capacity is about two liters.

Der Zwischenbehälter 2 ist vorzugsweise mit einem Niveausensor 74 versehen, um den Füllvorgang des Zwischenbehälters 2 zu beenden, wenn das Flüssigkeitsniveau den Niveausensor 74 erreicht. Der Niveausensor 74 kann ein Schwimmerschalter oder magnetischer oder elektromagnetischer oder kapazitiver oder anderer Sensor oder Schalter sein, welcher mit der Steuereinrichtung 72 zur Signalübertragung verbunden ist. Die Steuereinrichtung 72 kann derart ausgebildet sein, dass ein Füllen des Zwischenbehälters 2 und/oder das Zuführen von Flüssigkeit von dem Zwischenbehälter 2 zur Druckmaschine für einen Waschvorgang manuell gestartet werden kann. Gemäß anderer Ausführungsform kann jedoch auch vorgesehen sein, dass das Füllen und/oder die Flüssigkeitszufuhr zur Druckmaschine automatisch von einer Druckmaschinensteuerung ausgelöst wird, welche hierfür mit der elektrischen Steuerung 72 verbunden ist.The intermediate container 2 is preferably provided with a level sensor 74 to end the filling operation of the intermediate container 2 when the liquid level reaches the level sensor 74. The level sensor 74 may be a float switch or magnetic or electromagnetic or capacitive or other sensor or switch connected to the signal transmission controller 72. The control device 72 may be designed such that a filling of the intermediate container 2 and / or the supply of liquid from the intermediate container 2 to the printing machine for a washing process can be started manually. According to another embodiment, however, it can also be provided that the filling and / or the liquid supply to the printing machine is automatically triggered by a printing machine control, which is connected to the electrical control 72 for this purpose.

Der Vorratsbehälter 34 kann von beliebiger Art sein, beispielsweise ein Norm-Gebinde, in welchem Waschflüssigkeitshersteller die Waschflüssigkeit dem Kunden liefern, oder ein kundenspezifisch gestalteter Behälter.The reservoir 34 may be of any type, for example, a standard container in which washing liquid manufacturers supply the washing liquid to the customer, or a custom designed container.

Gemäß einer bevorzugten Ausführungsform der Erfindung ist ein Versorgungsschrank 80 vorgesehen, in welchem mindestens der Zwischenbehälter 2, der Unterdrucksauger 4 und die Druckluftventilanordnung 6 untergebracht sind. Gemäß weiterer Ausführungsformen ist auch mindestens eines der folgenden Elemente im Versorgungsschrank 80 untergebracht: der Vorratsbehälter 34, Luftverdichter 28, Druckregler 30, Druckluftspeicherbehälter 32, elektrische Steuereinrichtung 72 und/oder die Flüssigkeitsventilanordnung 44. Der Vorratsbehälter 34, insbesondere wenn es sich um einen größeren Tank handelt, und/oder der Luftverdichter 28, Druckregler 30 und/oder der Druckluftspeicherbehälter 32 können außerhalb des Versorgungsschrankes 80 angeordnet sein. Die Flüssigkeitsventilanordnung 44 kann im Versorgungsschrank 80 untergebracht sein oder vorzugsweise an einer Druckmaschine vorgesehen werden.According to a preferred embodiment of the invention, a supply cabinet 80 is provided, in which at least the intermediate container 2, the vacuum cleaner 4 and the compressed air valve assembly 6 are housed. According to further embodiments also at least one of the following elements in the supply cabinet 80 accommodated: the reservoir 34, air compressor 28, pressure regulator 30, compressed air storage tank 32, electrical control device 72 and / or the liquid valve assembly 44. The reservoir 34, especially if it is a larger tank, and / or the air compressor 28, pressure regulator 30 and / or the compressed air storage tank 32 may be disposed outside of the supply cabinet 80. The liquid valve assembly 44 may be housed in the supply cabinet 80 or preferably provided on a printing press.

Claims (9)

Flüssigkeitsversorgungseinrichtung für eine Druckmaschinen-Reinigungsvorrichtung zum Reinigen von Zylindern und Walzen, enthaltend einen Zwischenbehälter (2); einen Unterdrucksauger (4); eine Druckluftventilanordnung (6) mit einem steuerbar umschaltbaren ersten Ventil (8) in einem ersten Druckluftweg (10) zwischen einer Druckluftquelle (12) und einem Drucklufteinlass (14) des Unterdrucksaugers (4), mit einem steuerbar umschaltbaren zweiten Ventil (16) in einem zweiten Druckluftweg (18) zwischen der Druckluftquelle (12) und dem Zwischenbehälter (2), und mit einem steuerbar umschaltbaren dritten Ventil (20) zwischen dem Zwischenbehälter (2) und einem Sauglufteinlass (24) des Unterdrucksaugers (4); eine Flüssigkeitstransferleitung (38) mit einem Rückströmsperrventil (40) zwischen dem Zwischenbehälter (2) und einem Vorratsbehälter (34); einem Flüssigkeitsauslassweg (42) aus dem Zwischenbehälter (2), welcher mit einer Flüssigkeitsventilanordnung (44) versehen ist oder an welchen eine solche Flüssigkeitsventilanordnung anschließbar ist, die mindestens ein steuerbar umschaltbares Flüssigkeitsabgabeventil (46, 48, 50) enthält, dessen Ventilauslassseite mit einer Reinigungsvorrichtung (56, 68) verbindbar ist; wobei die steuerbar umschaltbaren Ventile derart steuerbar sind, dass zum Einsaugen von Flüssigkeit aus dem Vorratsbehälter (34) in den Zwischenbehälter (2) das erste Ventil (8) und das dritte Ventil (20) sowie das Rückströmsperrventil (40) offen sind, wohingegen das zweite Ventil (16) und die Flüssigkeitsventilanordnung (44) geschlossen sind, und dass zum Abgeben von Flüssigkeit aus dem Zwischenbehälter (2) das erste Ventil (8) und das dritte Ventil (20) sowie das Rückströmsperrventil (40) geschlossen sind, wohingegen das zweite Ventil (16) und mindestens eines der Flüssigkeitsabgabeventile (46, 48, 50) der Flüssigkeitsventilanordnung (44) offen sind.A liquid supply device for a printing machine cleaning device for cleaning cylinders and rollers, comprising an intermediate container (2); a vacuum cleaner (4); a compressed air valve arrangement (6) with a controllably switchable first valve (8) in a first compressed air path (10) between a compressed air source (12) and a compressed air inlet (14) of the vacuum cleaner (4), with a controllably switchable second valve (16) in one second compressed air path (18) between the compressed air source (12) and the intermediate container (2), and with a controllably switchable third valve (20) between the intermediate container (2) and a suction air inlet (24) of the vacuum cleaner (4); a fluid transfer line (38) having a check valve (40) between the surge tank (2) and a reservoir (34); a Flüssigkeitsauslassweg (42) from the intermediate container (2), which is provided with a liquid valve arrangement (44) or to which such a liquid valve arrangement is connectable, which contains at least one controllably switchable liquid dispensing valve (46, 48, 50) whose Ventilauslassseite with a cleaning device (56, 68) is connectable; wherein the controllably switchable valves are controllable such that for sucking liquid from the reservoir (34) into the intermediate container (2) the first valve (8) and the third valve (20) and the Rückströmsperrventil (40) are open, whereas the second valve (16) and the liquid valve assembly (44) are closed, and that for discharging liquid from the intermediate container (2), the first valve (8) and the third valve (20) and the Rückströmsperrventil (40) are closed, whereas the second valve (16) and at least one of the liquid dispensing valves (46, 48, 50) of the liquid valve assembly (44) are open. Flüssigkeitsversorgungseinrichtung nach Anspruch 1, dadurch gekennzeichnet, dass das Rückströmsperrventil (40) ein selbsttätig umschaltbares Rückschlagventil oder Einwegventil ist.Liquid supply device according to claim 1, characterized in that the Rückströmsperrventil (40) is an automatically switchable check valve or one-way valve. Flüssigkeitsversorgungseinrichtung nach Anspruch 1, dadurch gekennzeichnet, dass das Rückströmsperrventil (40) ein steuerbar umschaltbares Ventil ist.Liquid supply device according to claim 1, characterized in that the Rückströmsperrventil (40) is a controllable switchable valve. Flüssigkeitsversorgungseinrichtung nach mindestens einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Unterdrucksauger (4) ein Injektor oder Ejektor ist.Liquid supply device according to at least one of the preceding claims, characterized in that the vacuum cleaner (4) is an injector or ejector. Flüssigkeitsversorgungseinrichtung nach mindestens einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass ein Versorgungsschrank (80) vorgesehen ist, in welchem mindestens der Zwischenbehälter (2), der Unterdrucksauger (4) und die Druckluftventilanordnung (6) untergebracht sind.Liquid supply device according to at least one of the preceding claims, characterized in that a supply cabinet (80) is provided in which at least the intermediate container (2), the vacuum cleaner (4) and the compressed air valve arrangement (6) are housed. Flüssigkeitsversorgungseinrichtung nach Anspruch 5, dadurch gekennzeichnet, dass im Versorgungsschrank (80) ein Freiraum zur Aufnahme des Vorratsbehälters (34) vorgesehen ist.Liquid supply device according to claim 5, characterized in that in the supply cabinet (80) has a free space for receiving the storage container (34) is provided. Flüssigkeitsversorgungseinrichtung nach Anspruch 5 oder 6, dadurch gekennzeichnet, dass eine elektrische Steuereinrichtung (72) zum Betätigen von mindestens einigen der steuerbar umschaltbaren Ventile im Versorgungsschrank (80) untergebracht ist.Liquid supply device according to claim 5 or 6, characterized in that an electrical control device (72) for actuating at least some of the controllably switchable valves in the supply cabinet (80) is housed. Flüssigkeitsversorgungseinrichtung nach mindestens einem der Ansprüche 5 bis 7, dadurch gekennzeichnet, dass die Flüssigkeitsventilanordnung (44) intern vom Versorgungsschrank (80) angeordnet ist.Liquid supply device according to at least one of claims 5 to 7, characterized in that the liquid valve arrangement (44) is arranged internally from the supply cabinet (80). Flüssigkeitsversorgungseinrichtung nach mindestens einem der Ansprüche 5 bis 7, dadurch gekennzeichnet, dass die Flüssigkeitsventilanordnung (44) extern vom Versorgungsschrank (80) angeordnet ist.Liquid supply device according to at least one of claims 5 to 7, characterized in that the liquid valve arrangement (44) is arranged externally from the supply cabinet (80).
EP20050022339 2004-12-23 2005-10-13 Fluid supply device for a printing machine cleaning apparatus Active EP1674262B1 (en)

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DE200410063336 DE102004063336A1 (en) 2004-12-23 2004-12-23 Liquid supply device for a printing machine cleaning device

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DE102007030827B4 (en) * 2007-07-03 2010-08-12 Technotrans Ag Device for providing washing fluids to printing machines

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DE102004063336A1 (en) 2006-07-06
EP1674262B1 (en) 2011-01-05
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DE502005010792D1 (en) 2011-02-17
EP1674261A3 (en) 2007-09-05

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