EP1591244A2 - Method and means for cleaning the dampening solution of a printing press - Google Patents

Method and means for cleaning the dampening solution of a printing press Download PDF

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Publication number
EP1591244A2
EP1591244A2 EP05009231A EP05009231A EP1591244A2 EP 1591244 A2 EP1591244 A2 EP 1591244A2 EP 05009231 A EP05009231 A EP 05009231A EP 05009231 A EP05009231 A EP 05009231A EP 1591244 A2 EP1591244 A2 EP 1591244A2
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EP
European Patent Office
Prior art keywords
dirt
dampening
dampening solution
solution
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
EP05009231A
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German (de)
French (fr)
Other versions
EP1591244A3 (en
EP1591244B1 (en
Inventor
Christian Walczyk
Christian Brüggemann
Jürgen Meckel
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.)
Technotrans SE
GEA Mechanical Equipment GmbH
Original Assignee
Technotrans SE
Westfalia Separator GmbH
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 Technotrans SE, Westfalia Separator GmbH filed Critical Technotrans SE
Publication of EP1591244A2 publication Critical patent/EP1591244A2/en
Publication of EP1591244A3 publication Critical patent/EP1591244A3/en
Application granted granted Critical
Publication of EP1591244B1 publication Critical patent/EP1591244B1/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F7/00—Rotary lithographic machines
    • B41F7/20—Details
    • B41F7/24—Damping devices
    • B41F7/32—Ducts, containers, or like supply devices for liquids
    • 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
    • B41P2235/30—Recovering used solvents or residues

Definitions

  • the invention relates to a method for cleaning the dampening solution of a Printing machine with an automatically emptying separator, which the Dirt particles and oil residues separated from the dampening solution and as dirt and Moistening agent mixture feeds a dirt and dampening container and introducing the remaining dampening solution into a dampening solution collecting container
  • a fountain solution is used in offset printing to moisten the rollers in the Recording and transfer of printing ink.
  • the dampening solution exists mostly essentially of water with an addition of alcohol and others Additives.
  • the dampening solution is absorbed during the printing process from paint residues, dust, etc. exposed to increasing pollution.
  • On the other side is a reuse of dampening solution sought as this way the water consumption and the cost of the additives and on the other hand, the disposal costs are limited to let.
  • dampening systems are operated in the circulation.
  • the dampening solution is filtered after use or other Subjected to cleaning operations and then into a dampening solution tank recycled.
  • the mixing ratio between Water and additives are readjusted.
  • a cleaning of dampening solution by a centrifugal separator in which the Separate dirt particles from dampening solution. There are separators of this kind also as embodiments with automatic emptying (see DE 199 55 624 A1).
  • An intensification of the cleaning process could be achieved by means of filters, which are often used in practice. Filters are in shape used by filter mats, band filters, filter bags, etc.
  • the invention is based on the object, a method and an apparatus of the above type, which allow it, without the use of filter materials a high degree of separation of dampening solution and To reach dirt particles.
  • the method according to the invention is characterized in that that the dirt and dampening solution mixture in the dirt and Dampening solution container is brought to the layered settling and that the fountain solution-containing layer by an overflow in the Dampening agent collection container is transferred.
  • a height adjustable Weir provided that is adjustable so that the bottom Dirt particles and the floating oil residues are retained.
  • a device is characterized in that the Dirt and dampening solution tank with the dampening solution collection container is connected by an overflow of the fountain solution containing Layer of the dirt and dampening solution container emanates. That from above Emerging weir can be height adjustable. It is also possible to have one of to provide below liftable, adjustable weir.
  • the single figure is a schematic circuit diagram for explaining the process the method according to the invention.
  • 10 denotes a dampening solution tank. Of this Feuchtstofftank 10 off is in a manner not shown dampening to the associated printing unit of the printing press transported and used Dampening solution returned. These details are not shown. Independently of which is from the dampening solution tank 10 via a line 12 using a pump 14 dampening withdrawn and a centrifugal separator 16 forwarded. This separator is self-draining. He serves to a large extent Separation of dampening solution and dirt particles. The separator Therefore, via a line 18 largely purified dampening solution in a Moisture collection container 20 from. On the other hand, of the separator 16 a dirt particle dampening solution via a line 22 in a Dirt and dampening solution container 24 delivered.
  • the dirt and fountain solution tank 24 is with the fountain solution tank 20 connected by an overflow 26, in the drawing only is shown schematically.
  • the overflow 26 goes from the middle region of the Dirt and fountain solution tank 24, so that in the dirt and Dampening solution tank 24 Dirt particles fall down and oil residues can float upwards, while at mid-height they are largely pure Dampening solution is available.
  • This fountain solution layer can over be deducted in the middle height overflow 26.
  • These weirs can be adjustable in the vertical direction, so that they only pass through the layer like a panel, essentially consists of pure dampening solution.
  • a line 28 From the fountain solution tank 20 is a line 28, in the there is a pump 30. Via the line 28, the purified dampening solution from the fountain solution tank 20 back into the dampening solution tank 10 are pumped.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Inking, Control Or Cleaning Of Printing Machines (AREA)
  • Rotary Presses (AREA)
  • Treatment Of Sludge (AREA)

Abstract

The cleaning process is for a press with an automatically emptying separator (16) which separates out the dirt and oil from the damping water, takes it as a mixture to a mixture container (24), and the remaining damping water to the damping water container (20). The mixture in the mixture container is deposited in layers. The layer containing the damping water is run off through an overflow (26) into the moisture container.

Description

Die Erfindung betrifft ein Verfahren zur Reinigung des Feuchtmittels einer Druckmaschine mit einem automatisch entleerenden Separator, der die Schmutzpartikel und Ölreste vom Feuchtmittel abtrennt und als Schmutz-und Feuchtmittelgemisch einem Schmutz- und Feuchmittelbehälter zuführt und das verbleibende Feuchtmittel in einen Feuchtmittelsammelbehälter einleitetThe invention relates to a method for cleaning the dampening solution of a Printing machine with an automatically emptying separator, which the Dirt particles and oil residues separated from the dampening solution and as dirt and Moistening agent mixture feeds a dirt and dampening container and introducing the remaining dampening solution into a dampening solution collecting container

Ein Feuchtmittel dient beim Offset-Druck zum Anfeuchten der Walzen bei der Aufnahme und der Übertragung von Druckfarbe. Das Feuchtmittel besteht zumeist im wesentlichen aus Wasser mit einem Zusatz von Alkohol und weiteren Zusätzen. Das Feuchtmittel ist während des Druckvorgangs durch Aufnahme von Farbresten, Staub, etc. einer zunehmenden Verschmutzung ausgesetzt. Auf der anderen Seite wird eine Wiederverwendung des Feuchtmittels angestrebt, da sich auf diese Weise der Wasserverbrauch und die Kosten für die Zusatzmittel sowie andererseits die Entsorgungskosten in Grenzen halten lassen. In vielen Fällen werden daher Feuchtmittelsysteme im Kreislauf betrieben. Zumeist wird das Feuchtmittel nach dem Gebrauch gefiltert oder anderen Reinigungsvorgängen unterworfen und sodann in einen Feuchtmitteltank zurückgeführt. Dabei kann auch das Mischungsverhältnis zwischen Wasser und Zusatzstoffen neu justiert werden. Bekannt ist auch eine Reinigung des Feuchtmittels durch einen Zentrifugal-Separator, in dem sich die Schmutzpartikel vom Feuchtmittel abtrennen. Separatoren dieser Art gibt es auch als Ausführungsformen mit selbsttätiger Entleerung (siehe DE 199 55 624 A1).A fountain solution is used in offset printing to moisten the rollers in the Recording and transfer of printing ink. The dampening solution exists mostly essentially of water with an addition of alcohol and others Additives. The dampening solution is absorbed during the printing process from paint residues, dust, etc. exposed to increasing pollution. On the other side is a reuse of dampening solution sought as this way the water consumption and the cost of the additives and on the other hand, the disposal costs are limited to let. In many cases, therefore dampening systems are operated in the circulation. In most cases, the dampening solution is filtered after use or other Subjected to cleaning operations and then into a dampening solution tank recycled. The mixing ratio between Water and additives are readjusted. Also known is a cleaning of dampening solution by a centrifugal separator in which the Separate dirt particles from dampening solution. There are separators of this kind also as embodiments with automatic emptying (see DE 199 55 624 A1).

Die Abtrennung des Feuchtmittel-Schmutzpartikel-Gemisches im Separator bewirkt naturgemäß, dass dieses Gemisch nach wie vor einen relativ hohen Anteil von an sich verwertbarem Feuchtmittel enthält.The separation of the dampening solution-dirt particle mixture in the separator naturally causes this mixture to remain relatively high Contains proportion of usable wetting agent.

Eine Intensivierung des Reinigungsvorgangs ließe sich mithilfe von Filtern erreichen, die in der Praxis häufig verwendet werden. Filter werden in der Form von Filtermatten, Bandfiltern, Filterbeuteln usw. eingesetzt. An intensification of the cleaning process could be achieved by means of filters, which are often used in practice. Filters are in shape used by filter mats, band filters, filter bags, etc.

Diese Filtermaterialien stellen Verbrauchsmaterialien dar und sind sowohl durch die Beschaffung als auch durch die spätere Entsorgung mit Kosten verbunden. Dies gilt insbesondere auch für die Notwendigkeit, dass die Filtermaterialien regelmäßig durch Personaleinsatz gewechselt werden müssen.These filter materials are consumables and are both through the procurement as well as through the later disposal with costs connected. This is especially true for the need for the filter materials must be changed regularly by staffing.

Der Erfindung liegt die Aufgabe zugrunde, ein Verfahren und eine Vorrichtung der obigen Art zu schaffen, die es gestatten, ohne Verwendung von Filtermaterialien einen hohen Grad der Trennung von Feuchtmittel und Schmutzpartikeln zu erreichen.The invention is based on the object, a method and an apparatus of the above type, which allow it, without the use of filter materials a high degree of separation of dampening solution and To reach dirt particles.

Zur Lösung dieser Aufgabe ist das erfindungsgemäße Verfahren dadurch gekennzeichnet, dass das Schmutz- und Feuchtmittelgemisch in dem Schmutz-und Feuchtmittelbehälter zum schichtweisen Absetzen gebracht wird und dass die das Feuchtmittel enthaltende Schicht durch einen Überlauf in den Feuchtmittelsammelbehälter überführt wird.To solve this problem, the method according to the invention is characterized in that that the dirt and dampening solution mixture in the dirt and Dampening solution container is brought to the layered settling and that the fountain solution-containing layer by an overflow in the Dampening agent collection container is transferred.

Aufgrund unterschiedlicher Dichteverhältnisse setzen sich in dem Schmut-und Feuchtmittelbehälter in der Regel unten die Schmutpartikel ab, während Ölreste die obere Schicht bilden und das noch brauchbare Feuchtmittel die mittlere Schicht bildet. Man kann daher durch geeignete Anordnung eines Überlauf die mittlere Schicht abziehen und damit von der unteren Schmutzpartikelschicht und der oberen Ölschicht trennen. Bei einer anderen Verteilung der Schichten ist der Überlauf entsprechend anders einzusetzen.Due to different density ratios put in the Schmut and Dampening tank usually the bottom of the soot particles off while Oil residues form the upper layer and the still usable dampening solution forms middle layer. One can therefore by suitable arrangement of a Overflow remove the middle layer and thus from the lower dirt particle layer and separate the upper oil layer. In another distribution of the layers, the overflow is to be used differently.

Vorzugsweise ist oben und gegebenenfalls auch unten ein höhenverstellbares Wehr vorgesehen, das so einstellbar ist, dass die unten befindlichen Schmutzpartikel und die oben schwimmenden Ölreste zurückgehalten werden.Preferably, above and optionally also below a height adjustable Weir provided that is adjustable so that the bottom Dirt particles and the floating oil residues are retained.

Eine erfindungsgemäße Vorrichtung ist dadurch gekennzeichnet, dass der Schmutz- und Feuchtmittelbehälter mit dem Feuchtmittelsammelbehälter durch einen Überlauf verbunden ist, der von der das Feuchtmittel enthaltenden Schicht des Schmutz- und Feuchtmittelbehälters ausgeht. Das von oben auftauchende Wehr kann höhenverstellbar sein. Es ist auch möglich, ein von unten anhebbares, verstellbares Wehr vorzusehen. A device according to the invention is characterized in that the Dirt and dampening solution tank with the dampening solution collection container is connected by an overflow of the fountain solution containing Layer of the dirt and dampening solution container emanates. That from above Emerging weir can be height adjustable. It is also possible to have one of to provide below liftable, adjustable weir.

Im folgenden werden bevorzugte Ausführungsbeispiele der Erfindung anhand der beigefügten Zeichnung näher erläutert.In the following preferred embodiments of the invention are based on the accompanying drawings explained.

Die einzige Figur ist ein schematisches Schaltbild zur Erläuterung des Ablaufs des erfindungsgemäßen Verfahrens.The single figure is a schematic circuit diagram for explaining the process the method according to the invention.

In der Zeichnung ist mit 10 ein Feuchtmitteltank bezeichnet. Von diesem Feuchtmitteltank 10 aus wird in nicht gezeigter Weise Feuchtmittel zu dem zugehörigen Druckwerk der Druckmaschine transportiert und gebrauchtes Feuchtmittel zurückgeleitet. Diese Einzelheiten sind nicht dargestellt. Unabhängig davon wird von dem Feuchtmitteltank 10 über eine Leitung 12 mithilfe einer Pumpe 14 Feuchtmittel abgezogen und einem Zentrifugal-Separator 16 zugeleitet. Dieser Separator wirkt selbstentleerend. Er dient zu einer weitgehenden Trennung von Feuchtmittel und Schmutzpartikeln. Der Separator gibt daher über eine Leitung 18 weitgehend gereinigtes Feuchtmittel in einen Feuchtmittelsammelbehälter 20 ab. Andererseits wird von dem Separator 16 ein Schmutzpartikel-Feuchtmittelgemisch über eine Leitung 22 in einen Schmutz- und Feuchtmittelbehälter 24 abgegeben.In the drawing, 10 denotes a dampening solution tank. Of this Feuchtmitteltank 10 off is in a manner not shown dampening to the associated printing unit of the printing press transported and used Dampening solution returned. These details are not shown. Independently of which is from the dampening solution tank 10 via a line 12 using a pump 14 dampening withdrawn and a centrifugal separator 16 forwarded. This separator is self-draining. He serves to a large extent Separation of dampening solution and dirt particles. The separator Therefore, via a line 18 largely purified dampening solution in a Moisture collection container 20 from. On the other hand, of the separator 16 a dirt particle dampening solution via a line 22 in a Dirt and dampening solution container 24 delivered.

Der Schmutz- und Feuchtmittelbehälter 24 ist mit dem Feuchtmittelsammelbehälter 20 durch einen Überlauf 26 verbunden, der in der Zeichnung nur schematisch dargestellt ist. Der Überlauf 26 geht vom mittleren Bereich des Schmutz- und Feuchtmittelbehälters 24 aus, so dass in dem Schmutz- und Feuchtmittelbehälter 24 Schmutzpartikel nach unten absinken und Ölreste nach oben aufschwimmen können, während in mittlerer Höhe weitgehend reines Feuchtmittel zur Verfügung steht. Diese Feuchtmittelschicht kann über den in mittlerer Höhe ansetzenden Überlauf 26 abgezogen werden. Dabei kann von oben und gegebenenfalls auch von unten ein Wehr in den Überlauf hineinragen. Diese Wehre können in senkrechter Richtung einstellbar sein, so dass sie wie eine Blende lediglich die Schicht hindurchlassen, die im wesentlichen aus reinem Feuchtmittel besteht.The dirt and fountain solution tank 24 is with the fountain solution tank 20 connected by an overflow 26, in the drawing only is shown schematically. The overflow 26 goes from the middle region of the Dirt and fountain solution tank 24, so that in the dirt and Dampening solution tank 24 Dirt particles fall down and oil residues can float upwards, while at mid-height they are largely pure Dampening solution is available. This fountain solution layer can over be deducted in the middle height overflow 26. there can from above and possibly also from below a weir in the overflow protrude. These weirs can be adjustable in the vertical direction, so that they only pass through the layer like a panel, essentially consists of pure dampening solution.

Von dem Feuchtmittelsammelbehälter 20 geht eine Leitung 28 aus, in der sich eine Pumpe 30 befindet. Über die Leitung 28 kann das gereinigte Feuchtmittel aus dem Feuchtmittelsammelbehälter 20 zurück in den Feuchtmitteltank 10 gepumpt werden. From the fountain solution tank 20 is a line 28, in the there is a pump 30. Via the line 28, the purified dampening solution from the fountain solution tank 20 back into the dampening solution tank 10 are pumped.

Die Anordnung der beiden Behälter 20,24 mit dem sie verbindenden Überlauf 26 führt dazu, dass für die Reinigung des Feuchtmittels eine weitere Reinigungsstufe zur Verfügung steht, ohne dass zusätzliche Filtereinheiten verwendet werden müssen.The arrangement of the two containers 20,24 with the overflow connecting them 26 results in a further cleaning step for cleaning the dampening solution is available without using additional filter units Need to become.

Der Aufwand für die Entsorgung verbrauchten Trennmittels wird reduziert.The effort for the disposal of used release agent is reduced.

Claims (8)

Verfahren zur Reinigung des Feuchtmittels einer Druckmaschine mit einem automatisch entleerenden Separator (16), der die Schmutzpartikel und Ölreste vom Feuchtmittel abtrennt und als Schmutz- und Feuchtmittelgemisch einem Schmutz- und Feuchmittelbehälter (24) zuführt und das verbleibende Feuchtmittel in einen Feuchtmittelsammelbehälter (20) einleitet, dadurch gekennzeichnet, dass das Schmutz- und Feuchtmittelgemisch in dem Schmutz- und Feuchtmittelbehälter (24) zum schichtweisen Absetzen gebracht wird und dass die das Feuchtmittel enthaltende Schicht durch einen Überlauf (26) in den Feuchtmittelsammelbehälter (20) überführt wird.A method for cleaning the dampening solution of a printing machine with an automatically emptying separator (16), which separates the dirt particles and oil residues from the dampening solution and as a dirt and dampening solution a dirt and dampening container (24) supplies and initiates the remaining dampening solution in a fountain solution tank (20) , characterized in that the dirt and dampening solution mixture in the dirt and dampening solution container (24) is brought to the layered settling and that the dampening solution-containing layer is transferred by an overflow (26) in the dampening solution collecting container (20). Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass in den Überlaufstrom ein von oben eintauchendes Wehr eingesetzt wird.A method according to claim 1, characterized in that in the overflow stream from a dipping weir from above. Verfahren nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass ein von unten anhebbares Wehr vorgesehen ist.Method according to claim 1 or 2, characterized in that a weir which can be raised from below is provided. Verfahren nach Anspruch 2 oder 3, dadurch gekennzeichnet, dass die Wehre höhenverstellbar sind.A method according to claim 2 or 3, characterized in that the weirs are height adjustable. Vorrichtung zur Reinigung des Feuchtmittels einer Druckmaschine, mit einem automatisch entleerenden Separator (16), der die Schmutzpartikel vom Feuchtmittel abtrennt und als Schmutzpartikel-Feuchtmittelgemisch einem Schmutz- und Feuchtmittelbehälter (24) zuführt und das verbleibende Feuchtmittel in einen Feuchtmittelsammelbehälter (20) einleitet, dadurch gekennzeichnet, dass der Schmutz- und Feuchtmittelbehälter (24) mit dem Feuchtmittelsammelbehälter (20) durch einen Überlauf (26) verbunden ist, der von der das Feuchtmittel enthaltenden Schicht des Schmutz- und Feuchtmittelbehälters (24) ausgeht.Device for cleaning the fountain solution of a printing press with an automatically emptying separator (16) which separates the dirt particles from the fountain solution and supplies as dirt particles dampening solution mixture to a dirt and fountain solution container (24) and introducing the remaining fountain solution into a fountain solution storage tank (20), characterized in that the dirt and dampening solution container (24) is connected to the dampening agent collecting container (20) by an overflow (26) which starts from the layer of the dirt and dampening agent container (24) containing the dampening solution. Vorrichtung nach Anspruch 5, dadurch gekennzeichnet, dass in die Strömungsbahn des Überlaufs (26) von oben ein Wehr eintaucht. Apparatus according to claim 5, characterized in that in the flow path of the overflow (26) from above a weir dips. Vorrichtung nach Anspruch 6, dadurch gekennzeichnet, dass das Wehr höhenverstellbar ist.Apparatus according to claim 6, characterized in that the weir is height adjustable. Vorrichtung nach einem der Ansprüche 3 bis 7, dadurch gekennzeichnet, dass ein von unten anhebbares, verstellbares Wehr in der Strömungsbahn des Überlaufs (26) vorgesehen ist.Device according to one of claims 3 to 7, characterized in that a liftable from below, adjustable weir in the flow path of the overflow (26) is provided.
EP05009231A 2004-04-30 2005-04-27 Method and means for cleaning the dampening solution of a printing press Expired - Fee Related EP1591244B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004021508 2004-04-30
DE102004021508A DE102004021508B4 (en) 2004-04-30 2004-04-30 Method and device for cleaning the dampening solution of a printing machine

Publications (3)

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EP1591244A2 true EP1591244A2 (en) 2005-11-02
EP1591244A3 EP1591244A3 (en) 2005-11-09
EP1591244B1 EP1591244B1 (en) 2009-04-08

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US (1) US7291277B2 (en)
EP (1) EP1591244B1 (en)
JP (1) JP4242853B2 (en)
DE (2) DE102004021508B4 (en)

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EP2078609A1 (en) 2008-01-08 2009-07-15 technotrans AG Decentralised cleaning system
EP1787814A3 (en) * 2005-11-19 2009-10-21 Technotrans AG Cleaning device for the dampening water of an offset printing machine
ITMI20100018A1 (en) * 2010-01-12 2011-07-13 Ecografica S R L PLANT FOR THE SEPARATION AND RECOVERY OF MICROPARTELS CONTAINED IN SUSPENSION IN THE OFFSET PRINTING WATER.

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DE102004021508B4 (en) * 2004-04-30 2007-04-19 Technotrans Ag Method and device for cleaning the dampening solution of a printing machine
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DE102007033293A1 (en) * 2007-07-17 2009-01-29 Technotrans Ag Filtration for printing machines
DE102008010036B3 (en) * 2008-02-20 2009-07-30 Technotrans Ag Damping solution cleaning device arrangement for use in printing machine, has additive dosing device arranged such that dosing of dampening solution additive is controlled based on parameters of damping solution cleaning device
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US7291277B2 (en) 2007-11-06
JP4242853B2 (en) 2009-03-25
EP1591244A3 (en) 2005-11-09
EP1591244B1 (en) 2009-04-08
JP2005313649A (en) 2005-11-10
DE102004021508B4 (en) 2007-04-19
DE502005007024D1 (en) 2009-05-20
DE102004021508A1 (en) 2005-11-24
US20060005724A1 (en) 2006-01-12

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