EP0779150B1 - Washing system of graphic industry machine - Google Patents
Washing system of graphic industry machine Download PDFInfo
- Publication number
- EP0779150B1 EP0779150B1 EP96115102A EP96115102A EP0779150B1 EP 0779150 B1 EP0779150 B1 EP 0779150B1 EP 96115102 A EP96115102 A EP 96115102A EP 96115102 A EP96115102 A EP 96115102A EP 0779150 B1 EP0779150 B1 EP 0779150B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- cleaning fluid
- cleaning
- ion
- ion exchanger
- impurities
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 238000005406 washing Methods 0.000 title claims abstract description 28
- 238000004140 cleaning Methods 0.000 claims abstract description 72
- 239000012530 fluid Substances 0.000 claims abstract description 24
- 239000002904 solvent Substances 0.000 claims abstract description 6
- 238000000034 method Methods 0.000 claims description 12
- 239000012535 impurity Substances 0.000 claims description 11
- 238000005342 ion exchange Methods 0.000 claims description 10
- 239000007787 solid Substances 0.000 claims description 8
- 238000011144 upstream manufacturing Methods 0.000 claims description 7
- 238000001914 filtration Methods 0.000 claims description 6
- 150000002978 peroxides Chemical class 0.000 claims description 6
- 230000002378 acidificating effect Effects 0.000 claims description 4
- 239000000428 dust Substances 0.000 claims description 4
- 239000003456 ion exchange resin Substances 0.000 claims description 3
- 229920003303 ion-exchange polymer Polymers 0.000 claims description 3
- 239000000976 ink Substances 0.000 claims 8
- 150000001875 compounds Chemical class 0.000 claims 4
- -1 fibres Substances 0.000 claims 2
- 230000001172 regenerating effect Effects 0.000 claims 1
- 239000000356 contaminant Substances 0.000 abstract description 7
- 239000007788 liquid Substances 0.000 description 30
- 150000002500 ions Chemical class 0.000 description 23
- 238000007639 printing Methods 0.000 description 10
- 239000000126 substance Substances 0.000 description 6
- 230000000694 effects Effects 0.000 description 3
- 238000007645 offset printing Methods 0.000 description 3
- 239000003973 paint Substances 0.000 description 3
- 239000003086 colorant Substances 0.000 description 2
- 238000004821 distillation Methods 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 239000004615 ingredient Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 230000008929 regeneration Effects 0.000 description 2
- 238000011069 regeneration method Methods 0.000 description 2
- 206010010774 Constipation Diseases 0.000 description 1
- 230000002745 absorbent Effects 0.000 description 1
- 239000002250 absorbent Substances 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 229910001423 beryllium ion Inorganic materials 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 150000001868 cobalt Chemical class 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 239000003599 detergent Substances 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 150000002696 manganese Chemical class 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 239000012492 regenerant Substances 0.000 description 1
- 239000005871 repellent Substances 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Images
Classifications
-
- 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
- B41P—INDEXING SCHEME RELATING TO PRINTING, LINING MACHINES, TYPEWRITERS, AND TO STAMPS
- B41P2235/00—Cleaning
- B41P2235/30—Recovering used solvents or residues
-
- 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
- B41P2235/31—Recovering used solvents or residues by filtering
Definitions
- the invention relates to a washing system of the graphic Industry for washing paint, fibers, dust and other contaminants from rotating bodies while these rotating bodies rotate with one Cleaning liquid, which solvent to dissolve the Paint and to dissolve other soluble Contains impurities, according to the preamble of Claim 1. Furthermore, the invention relates to a method for a machine of the graphic industry for Wash off according to the generic term of the independent Subclaim for this procedure.
- washing machines for washing rotating Rotational bodies of a graphic machine Industry, in particular printing machines, and the like turn from offset printing machines, are out known various writings.
- the detergent for washing the rotating body is in one Recirculation cycle.
- From the DE utility models G 91 15 948.2 and G 88 01 323.5 as well DE-C-30 05 236 and DE-A-41 16 762 it is known mechanical in the return of the recirculation circuit Arrange filters through which from the cleaning liquid, which from a rotating body to one Storage tank flows back, mechanical components be filtered.
- DE-A 30 25 639 it is known to use a centrifuge as a filter medium which solid contaminants from the cleaning liquid be segregated.
- the cleaning liquid in the graphics industry must not have a negative impact on print quality to have. That is why there are modern cleaning fluids mainly from high quality organic substances, which not only have a cleaning effect, but at the same time also effects that affect the printing process are advantageous, for example a metered Moisten the rotating body during the Printing process for the purpose that no ink from the printed print carrier adheres to the rotating body and is transferred to this, which damage the Print image on the print carrier would mean.
- As Cleaning liquid can also, for example "Dampening solution" are used, which in the same printing press is also used in Offset printing process on the printing plate of the Printing plate cylinder ink-repellent areas form.
- the invention is not for cleaning Printing unit cylinders, for example blanket cylinders, Impression cylinder or plate cylinder limited but for continuous or discontinuous cleaning of all cylinders and Rolling machines of the graphic industry applicable, for example for cleaning the cylinder from Printing units, the roles of inking units or Dampening, for cleaning guide rollers, the Cylinder of calenders, for cleaning rollers or Cylinders in glue applicators and laminating machines.
- the print media can be sheets, for example Sheets of paper for brochures or newspapers, or webs be from one unwinding reel to one Winding roll or run to a cutter, which cuts the web into arches.
- the object of the invention is to be achieved Rotary body of machines of the graphic industry of components dissolved in it without cleaning the Exchange cleaning fluid and without the Machine operation or print quality too affect. This task is to be solved by means which are not structurally large devices need which are not expensive and which harmless with regard to fire and explosion are.
- Fig. 1 shows broken off a rotating body 2 one Machine of the graphic industry, for example a rubber impression cylinder, impression cylinder, impression cylinder or an ink roller of an offset printing machine or similar.
- the car wash for cleaning the Rotating body 2 with a solvent-containing Cleaning fluid contains a rotating one Washing roller 4, which is continuous or discontinuously abuts the rotating body 2, which also rotates.
- the speeds and Direction of rotation of the rotating body 2 and Wash roller 4 are chosen such that between their relative surfaces on one another takes place. Instead of a washing roller 4 can also other washing element can be used.
- the Cleaning liquid is in a storage container 6 stored, which also fresh cleaning liquid can be supplied and from which the Cleaning liquid via a flow 8 Washer roller 4 fed and via a return 10 Storage container 6 is returned.
- the Flow 8 contains a pump 12 to promote the Cleaning liquid from the reservoir 6 too a nozzle device 14 with one or more nozzles at the end of the lead 8, which the Spray cleaning liquid on the washing roller 4.
- a nozzle device 14 with one or more nozzles at the end of the lead 8, which the Spray cleaning liquid on the washing roller 4.
- the washing roller 4 dripping fresh Cleaning liquid and from the rotating body 2 of the washing roller 4 stripped dirty Cleaning liquid and if necessary from Rotating body 2 spraying cleaning liquid is by a sump 16 at the beginning of the return 10 caught.
- the return 10 contains one after the other in Flow direction the collecting wall 16, one over a upstream line 18 connected to it Return tank 20, a 2/2-way valve 22, one Intermediate line 25 with a pump 24, a Filter device 26 with a coarse filter 28 and downstream fine filter 30 for filtering Solid particles from the cleaning liquid, and an ion exchanger 32 in a downstream one Return line section 33 between the Filter device 26 and the reservoir 6.
- the cleaning liquid circulates in the Storage container 6, flow 8 and return 10 existing recirculation cycle during the Cleaning operation when said first valve 22nd not the closed position shown, but Has open position while everyone else in the Valves shown drawing their closed position to have. Closed position here means that the valves do not let liquid through; Open position means here that the valves let fluid through.
- Level switch 34 effects via a control device, that pumps 12 and 24 are only switched on when the cleaning liquid in the return tank 20 has reached a certain level, but not at a lower level.
- a flush line 36 with a second valve 38 connects the reservoir 6 to the intermediate line 25 of the return 10 upstream of its pump 24.
- the filters 28 and 30 of the filter device 26 can be in Backwashed when the first valve is flushed 22 is closed, the second valve 38 is opened a third bridging the return pump 24 Valve 40 opened, one on the pressure side of the Return pump 24 arranged and from the third valve 40 also bypassed fourth valve 42 on the Pressure side of the return pump 24 is closed, the downstream return line section 33 upstream of the ion exchange 32 by a fifth Valve 44 is closed, the pressure side of the flow pump 12 by closing a sixth valve 46 from Flow separated and by opening a seventh valve 48 connected to the output of the filter device 26 the feed pump 12 is turned on while the return pump 24 is switched off.
- the ion exchanger 32 contains at least one, or several arranged in series or parallel to each other, of the cleaning liquid of the return 10 flowed through ion filter 50.
- the ion filter 50 contain filter media for ion exchange and thus for Filter out dissolved components of the Cleaning liquid, especially for ionic Filter out alkaline colors and acidic ones Colours.
- the Cleaning liquid contains organic components, which react with oxygen in air and thereby Form peroxides, for example in the collecting trough 16 the washing roller 4 and / or the rotating body 2, then preferably also contains the ion exchanger Ion filter mass, which with these peroxides one Generates ion exchange and thereby these peroxides filters out the cleaning liquid.
- the Ion filter media are preferred Ion exchange resins. Of course you can too other substances dissolved in the cleaning liquid this cleaning liquid by ion exchange be filtered out. Depending on the type of solved Substances that are to be filtered out must be Ion exchanger 32 one adapted for this Contain ion exchange mass.
- the Ion filter masses 50 exchanged or regenerated become.
- a cover 52 is for such an exchange of the ion exchanger 32 removable.
- this conditioner to regenerate the Ion exchanger 32, it is over at its lower end an eighth valve 54 can be connected to a tub 55, and at its upper end facing away from it a ninth Valve 56 with a second regenerant container 58 connectable, in which the Chemical solution.
- the ion exchanger 32 can also without one upstream filter device 26 for filtering Solid contaminants are used. According to other embodiments, the ion exchanger 32 also used in combination with other filter types become.
- a centrifugal separator e.g. a decanter, in the return 10 arranged upstream of the ion exchanger 32 become.
- the principle of operation of the invention or Ion exchanger is based on the fact that printing ink ingredients, such as manganese salts and Cobalt salts and peroxides, on strongly acidic and / or on strongly basic ion exchangers, preferably Ion exchange resins are bound.
- the Ion exchanger is preferably a so-called Mixed bed reactor, which according to the so-called Mixed bed process works. This will both Ink ingredients, which by acid Ion exchangers, as well as those which are made by basic Ion exchangers can be bound from the Cleaning liquid excreted.
- the invention can also be called “absorbent Solvent cleaning system for offset machines "or as "regeneration process for printing blanket cleaning” be designated.
Landscapes
- Cleaning By Liquid Or Steam (AREA)
- Control Of Washing Machine And Dryer (AREA)
- Detail Structures Of Washing Machines And Dryers (AREA)
- Detergent Compositions (AREA)
Abstract
Description
Die Erfindung betrifft eine Waschanlage der graphischen Industrie zum Abwaschen von Farben, Fasern, Staub und anderen Verunreinigungen von Rotationskörpern, während diese Rotationskörper rotieren, mit einer Reinigungsflüssigkeit, welche Lösemittel zum Lösen der Farbe und zum Lösen von anderen löslichen Verunreinigungen enthält, gemäß dem Oberbegriff von Anspruch 1. Ferner betrifft die Erfindung ein Verfahren für eine Maschine der graphischen Industrie zum Abwaschen gemäß dem Oberbegriff des unabhängigen Unteranspruches für dieses Verfahren.The invention relates to a washing system of the graphic Industry for washing paint, fibers, dust and other contaminants from rotating bodies while these rotating bodies rotate with one Cleaning liquid, which solvent to dissolve the Paint and to dissolve other soluble Contains impurities, according to the preamble of Claim 1. Furthermore, the invention relates to a method for a machine of the graphic industry for Wash off according to the generic term of the independent Subclaim for this procedure.
Waschanlagen zum Waschen von rotierenden
Rotationskörpern einer Maschine der graphischen
Industrie, insbesondere von Druckmaschinen, und hiervon
wiederum von Offset-Druckmaschinen, sind aus
verschiedenen Schriften bekannt. Das Reinigungsmittel
zum Waschen der Rotationskörper wird in einem
Rezirkulationskreislauf geführt. Aus den DE-Gebrauchsmustern
G 91 15 948.2 und G 88 01 323.5 sowie
der DE-C-30 05 236 und DE-A-41 16 762 ist es bekannt,
im Rücklauf des Rezirkulationskreislaufes mechanische
Filter anzuordnen, durch welche aus der Reinigungsflüssigkeit,
welcher von einem Rotationskörper zu einem
Vorratsbehälter zurückfließt, mechanische Bestandteile
gefiltert werden. Aus der DE-A 30 25 639 ist bekannt,
als Filtermittel eine Zentrifuge zu verwenden, durch
welche aus der Reinigungsflüssigkeit Festkörper-Verunreinigungen
abgesondert werden. Ferner ist es aus
der DE-A 41 16 762, der US-A 5 323 705 und den Patent
Abstracts of Japan, M-983, June 12, 1990 Vol. 14/No.
271 und der darin beschriebenen japanischen
Patentanmelde-Veröffentlichung 2-78552 (A) bekannt, die
Reinigungsflüssigkeit durch Destillation zu reinigen. Washing machines for washing rotating
Rotational bodies of a graphic machine
Industry, in particular printing machines, and the like
turn from offset printing machines, are out
known various writings. The detergent
for washing the rotating body is in one
Recirculation cycle. From the DE utility models
G 91 15 948.2 and G 88 01 323.5 as well
DE-C-30 05 236 and DE-A-41 16 762 it is known
mechanical in the return of the recirculation circuit
Arrange filters through which from the cleaning liquid,
which from a rotating body to one
Storage tank flows back, mechanical components
be filtered. From
Bei der Reinigung mit Filtern oder Zentrifugen werden nur Feststoff-Partikel aus der Reinigungsflüssigkeit herausgefiltert. In der Reinigungsflüssigkeit gelöste Verunreinigungs-Bestandteile können damit nicht herausgefiltert werden, insbesondere Druckfarbenreste, welche in der Reinigungsflüssigkeit gelöst sind. Dadurch wird die Reinigungsflüssigkeit nach einiger Betriebszeit mit gelösten Verunreinigungen gesättigt und muß ausgetauscht werden oder chemisch aufbereitet werden. Die mechanischen Filter haben den Nachteil, das sie durch die Feststoff-Verunreinigungen nach einiger Betriebszeit verstopfen und zur Verhinderung einer solchen Verstopfung von Zeit zu Zeit gereinigt oder ausgetauscht werden müssen. Destillations-Vorrichtungen haben den Nachteil, daß sie einen großen Apparateaufbau benötigen und teuer sind. Außerdem sind sie gefährlich, weil der Siedepunkt der Komponenten der Reinigungsflüssigkeit normalerweise über ihrem Flammpunkt liegt.When cleaning with filters or centrifuges only solid particles from the cleaning liquid filtered out. Dissolved in the cleaning liquid Contamination components cannot are filtered out, especially ink residues, which are dissolved in the cleaning liquid. This will make the cleaning fluid after some Operating time saturated with dissolved impurities and must be replaced or chemically processed become. The mechanical filters have the disadvantage that them through the solid contaminants after some Clogging up operating time and preventing one such constipation cleaned from time to time or need to be replaced. Distillation devices have the disadvantage that they have a large apparatus structure need and are expensive. They're also dangerous because the boiling point of the components of the Cleaning liquid usually over yours Flash point is.
Die Reinigungsflüssigkeit in der graphischen Industrie darf keinen negativen Einfluß auf die Druckqualität haben. Deshalb bestehen moderne Reinigungsflüssigkeiten vorwiegend aus hochwertigen organischen Stoffen, welche nicht nur eine Reinigungswirkung haben, sondern gleichzeitig auch Wirkungen, welche für den Druckprozeß vorteilhaft sind, beispielsweise ein dosiertes Befeuchten der Rotationskörper während des Druckprozesses zu dem Zweck, daß keine Druckfarbe vom bedruckten Druckträger am Rotationskörper haftet und auf diesen übertragen wird, was eine Beschädigung des Druckbildes auf dem Druckträger bedeuten würde. Als Reinigungsflüssigkeit kann beispielsweise auch "Feuchtmittel" verwendet werden, welches in der gleichen Druckmaschine auch dazu verwendet wird, im Offset-Druckverfahren auf der Druckplatte des Druckplattenzylinders farbabstoßende Bereiche zu bilden.The cleaning liquid in the graphics industry must not have a negative impact on print quality to have. That is why there are modern cleaning fluids mainly from high quality organic substances, which not only have a cleaning effect, but at the same time also effects that affect the printing process are advantageous, for example a metered Moisten the rotating body during the Printing process for the purpose that no ink from the printed print carrier adheres to the rotating body and is transferred to this, which damage the Print image on the print carrier would mean. As Cleaning liquid can also, for example "Dampening solution" are used, which in the same printing press is also used in Offset printing process on the printing plate of the Printing plate cylinder ink-repellent areas form.
Die Erfindung ist nicht auf die Reinigung von Druckwerkszylindern, beispielsweise Gummituchzylinder, Gegendruckzylinder oder Druckplattenzylinder beschränkt, sondern für die kontinuierliche oder diskontinuierliche Reinigung von allen Zylindern und Walzen von Maschinen der graphischen Industrie anwendbar, beispielsweise zum Reinigen der Zylinder von Druckwerken, der Rollen von Farbwerken oder Feuchtwerken, zum Reinigen von Führungswalzen, der Zylinder von Kalandern, zum Reinigen von Walzen oder Zylindern in Leimauftragswerken und Kaschiermaschinen. Die Druckträger können Bögen, beispielsweise Papierbögen für Prospekte oder Zeitungen, oder Bahnen sein, welche von einer Abwickelrolle zu einer Aufwickelrolle oder zu einer Schneidvorrichtung laufen, welche die Bahn in Bögen schneidet.The invention is not for cleaning Printing unit cylinders, for example blanket cylinders, Impression cylinder or plate cylinder limited but for continuous or discontinuous cleaning of all cylinders and Rolling machines of the graphic industry applicable, for example for cleaning the cylinder from Printing units, the roles of inking units or Dampening, for cleaning guide rollers, the Cylinder of calenders, for cleaning rollers or Cylinders in glue applicators and laminating machines. The print media can be sheets, for example Sheets of paper for brochures or newspapers, or webs be from one unwinding reel to one Winding roll or run to a cutter, which cuts the web into arches.
Durch die Erfindung soll die Aufgabe gelöst werden, Rotationskörper von Maschinen der graphischen Industrie von in ihr gelösten Bestandteilen zu Reinigen, ohne die Reinigungsflüssigkeit auszutauschen und ohne den Betrieb der Maschine oder die Druckqualität zu beeinträchtigen. Diese Aufgabe soll mit Mitteln gelöst werden, welche keine konstruktiv großen Vorrichtungen benötigen, welche nicht teuer sind, und welche bezüglich Feuergefahr und Explosionsgefahr unbedenklich sind.The object of the invention is to be achieved Rotary body of machines of the graphic industry of components dissolved in it without cleaning the Exchange cleaning fluid and without the Machine operation or print quality too affect. This task is to be solved by means which are not structurally large devices need which are not expensive and which harmless with regard to fire and explosion are.
Diese Aufgabe wird gemäß der Erfindung durch die Kombination der Merkmale der unabhängigen Ansprüche gelöst.This object is achieved according to the invention by the Combination of features of independent claims solved.
Weitere Merkmale der Erfindung sind in den Unteransprüchen enthalten.Further features of the invention are in the Subclaims included.
Die Erfindung wird im folgenden mit Bezug auf die beiliegende Zeichnung anhand einer bevorzugter Ausführungsform als Beispiel beschrieben, darin zeigt
- Fig. 1
- schematisch eine Waschanlage nach der Erfindung für eine Maschine der graphischen Industrie zum Abwaschen von Farbe, Fasern, Staub und anderen Verunreinigungen von Rotationskörpern dieser Maschine.
- Fig. 1
- schematically a washing system according to the invention for a machine in the graphics industry for washing off paint, fibers, dust and other contaminants from rotating bodies of this machine.
Fig. 1 zeigt abgebrochen einen Rotationskörper 2 einer
Maschine der graphischen Industrie, beispielsweise
einen Gummidruckzylinder, Druckzylinder, Gegendruckzylinder
oder eine Farbwalze einer Offset-Druckmaschine
oder dergleichen. Die Waschanlage zur Reinigung des
Rotationskörpers 2 mit einer Lösemittel enthaltenden
Reinigungsflüssigkeit enthält eine rotierende
Waschwalze 4, welche kontinuierlich oder
diskontinuierlich an dem Rotationskörper 2 anliegt,
welcher ebenfalls rotiert. Die Drehzahlen und
Drehrichtungen des Rotationskörpers 2 und der
Waschwalze 4 sind derart gewählt, daß zwischen ihren
aneinander anliegenden Oberflächen eine Relativbewegung
stattfindet. Statt einer Waschwalze 4 kann auch ein
anderes Waschelement verwendet werden. Die
Reinigungsflüssigkeit ist in einem Vorratsbehälter 6
gespeichert, welchem auch frische Reinigungsflüssigkeit
zugeführt werden kann und von welchem die
Reinigungsflüssigkeit über einen Vorlauf 8 der
Waschwalze 4 zugeführt und über einen Rücklauf 10 dem
Vorratsbehälter 6 wieder zurückgeführt wird. Der
Vorlauf 8 enthält eine Pumpe 12 zur Förderung der
Reinigungsflüssigkeit aus dem Vorratsbehälter 6 zu
einer Düsenvorrichtung 14 mit einer oder mehreren Düsen
am Ende des Vorlaufes 8, welche die
Reinigungsflüssigkeit auf die Waschwalze 4 sprühen. Von
der Waschwalze 4 abtropfende frische
Reinigungsflüssigkeit sowie vom Rotationskörper 2 von
der Waschwalze 4 abgestreifte verschmutzte
Reinigungsflüssigkeit und gegebenenfalls vom
Rotationskörper 2 abspritzende Reinigungsflüssigkeit
wird von einer Auffangwanne 16 am Anfang des Rücklaufes
10 aufgefangen. Der Rücklauf 10 enthält nacheinander in
Strömungsrichtung die Auffangwand 16, einen über eine
stromaufwärtige Leitung 18 mit ihr verbundenen
Rücklaufbehälter 20, ein 2/2-Wegeventil 22, eine
Zwischenleitung 25 mit einer Pumpe 24, eine
Filtervorrichtung 26 mit einem Grobfilter 28 und einem
nachgeschalteten Feinfilter 30 zum Filtern von
Feststoff-Partikeln aus der Reinigungsflüssigkeit, und
einen Ionenaustauscher 32 in einem stromabwärtigen
Rücklauf-Leitungsabschnitt 33 zwischen der
Filtervorrichtung 26 und dem Vorratsbehälter 6.Fig. 1 shows broken off a rotating body 2 one
Machine of the graphic industry, for example
a rubber impression cylinder, impression cylinder, impression cylinder
or an ink roller of an offset printing machine
or similar. The car wash for cleaning the
Rotating body 2 with a solvent-containing
Cleaning fluid contains a rotating one
Washing roller 4, which is continuous or
discontinuously abuts the rotating body 2,
which also rotates. The speeds and
Direction of rotation of the rotating body 2 and
Wash roller 4 are chosen such that between their
relative surfaces on one another
takes place. Instead of a washing roller 4 can also
other washing element can be used. The
Cleaning liquid is in a storage container 6
stored, which also fresh cleaning liquid
can be supplied and from which the
Cleaning liquid via a flow 8
Washer roller 4 fed and via a
Die Reinigungsflüssigkeit zirkuliert in dem aus
Vorratsbehälter 6, Vorlauf 8 und Rücklauf 10
bestehenden Rezirkulationskreislauf während des
Reinigungsbetriebes, wenn das genannte erste Ventil 22
nicht die dargestellte Schließstellung, sondern
Offenstellung hat, während alle anderen in der
Zeichnung dargestellten Ventile ihre Schließstellung
haben. Schließstellung bedeutet hier, daß die Ventile
keine Flüssigkeit durchlassen; Offenstellung bedeutet
hier, daß die Ventile Flüssigkeit durchlassen. Ein
Niveauschalter 34 bewirkt über eine Steuereinrichtung,
daß die Pumpen 12 und 24 nur dann eingeschaltet werden,
wenn die Reinigungsflüssigkeit im Rücklaufbehälter 20
ein bestimmtes Niveau erreicht hat, jedoch nicht bei
einem niedrigeren Niveau.The cleaning liquid circulates in the
Storage container 6, flow 8 and return 10
existing recirculation cycle during the
Cleaning operation when said first valve 22nd
not the closed position shown, but
Has open position while everyone else in the
Valves shown drawing their closed position
to have. Closed position here means that the valves
do not let liquid through; Open position means
here that the valves let fluid through. On
Level switch 34 effects via a control device,
that
Eine Freispülleitung 36 mit einem zweiten Ventil 38
verbindet den Vorratsbehälter 6 mit der Zwischenleitung
25 des Rücklaufes 10 stromaufwärts seiner Pumpe 24.
Durch Schließen des ersten Ventils 22 und Öffnen des
zweiten Ventils 38 können die Filter 28 und 30 der
Filtervorrichtung 26 in Vorwärtsrichtung gespült
werden, wobei nur die Rücklauf-Pumpe 24 eingeschaltet
ist, während die Vorlauf-Pumpe 12 ausgeschaltet ist. A
Die Filter 28 und 30 der Filtervorrichtung 26 können in
Rückwärtsrichtung gespült werden, wenn das erste Ventil
22 geschlossen wird, das zweite Ventil 38 geöffnet
wird, ein die Rücklauf-Pumpe 24 überbrückendes drittes
Ventil 40 geöffnet, ein auf der Druckseite der
Rücklauf-Pumpe 24 angeordnetes und vom dritten Ventil
40 ebenfalls überbrücktes viertes Ventil 42 auf der
Druckseite der Rücklauf-Pumpe 24 verschlossen wird, der
stromabwärtige Rücklauf-Leitungsabschnitt 33
stromaufwärts des Ionenaustausches 32 durch ein fünftes
Ventil 44 geschlossen wird, die Druckseite der Vorlauf-Pumpe
12 durch Schließen eines sechsten Ventils 46 vom
Vorlauf getrennt und durch Öffnen eines siebten Ventils
48 mit dem Ausgang der Filtervorrichtung 26 verbunden
wird, die Vorlaufpumpe 12 eingeschaltet wird, während
die Rücklauf-Pumpe 24 abgeschaltet ist.The
Der Ionenaustauscher 32 enthält mindestens einen, oder
mehrere in Reihe oder parallel zueinander angeordnete,
von der Reinigungsflüssigkeit des Rücklaufes 10
durchströmte Ionenfilter 50. Die Ionenfilter 50
enthalten Filtermassen zum Ionenaustausch und damit zum
Ausfiltern von gelösten Bestandteilen der
Reinigungsflüssigkeit, insbesondere zum ionischen
Herausfiltern von alkalischen Farben und von sauren
Farben. In der bevorzugten Ausführungsform, wenn die
Reinigungsflüssigkeit organische Bestandteile enthält,
welche in Luft mit Sauerstoff reagieren und dadurch
Peroxyde bilden, beispielsweise in der Auffangwanne 16,
der Waschwalze 4 und/oder dem Rotationskörper 2, dann
enthält der Ionenaustauscher vorzugsweise auch
Ionenfiltermasse, welche mit diesen Peroxyden einen
Ionenaustausch erzeugt und dadurch diese Peroxyde aus
der Reinigungsflüssigkeit ausfiltert. Die
Ionenfiltermassen sind vorzugsweise
Ionenaustauschharze. Selbstverständlich können auch
andere in der Reinigungsflüssigkeit gelöste Stoffe aus
dieser Reinigungsflüssigkeit durch Ionenaustausch
herausgefiltert werden. Je nach Art der gelösten
Stoffe, welche herausgefiltert werden sollen, muß der
Ionenaustauscher 32 eine dafür angepaßte
Ionenaustauschmasse enthalten.The
Wenn nach einiger Betriebszeit der Ionenaustauscher 32
keine austauschbaren Ionen mehr hat, können die
Ionenfiltermassen 50 ausgetauscht oder regeneriert
werden. Für einen solchen Austausch ist ein Deckel 52
des Ionenaustauschers 32 abnehmbar. Für eine
Regenerierung der Ionenfiltermassen der Ionenfilter 50
müssen sie mit einer geeigneten Chemikalienlösung
gespült werden. Für diese Spülung zur Regeneration des
Ionenaustauschers 32 ist er an seinem unteren Ende über
ein achtes Ventil 54 mit einer Wanne 55 verbindbar, und
an seinem dazu abgewandten oberen Ende über ein neuntes
Ventil 56 mit einem zweiten Regenerationsmittel-Behälter
58 verbindbar, in welchem sich die
Chemikalienlösung befindet. Während der Spülung des
Ionenaustauschers 32 mit der Chemikalienlösung muß der
stromabwärtige Rücklauf-Leitungsabschnitt 33 durch
Schließen des fünften Ventils 44 von der
Filtervorrichtung 26 und durch Schließen eines zehnten
Ventils 60 vom Vorratsbehälter 6 der
Reinigungsflüssigkeit getrennt werden.If after some operating time the
Der Ionenaustauscher 32 kann auch ohne eine
vorgeschaltete Filtereinrichtung 26 zum Filtern von
Feststoff-Verunreinigungen verwendet werden. Gemäß
anderen Ausführungsformen kann der Ionenaustauscher 32
auch in Kombination mit anderen Filterarten verwendet
werden.The
Zum Ausfiltern von ungelösten Feststoff-Verunreinigungen
kann anstelle oder zusätzlich der
Filtervorrichtung 26 eine Fliehkraft-Abscheidevorrichtung,
z.B. ein Dekanter, im Rücklauf 10
stromaufwärts des Ionenaustauschers 32 angeordnet
werden.For filtering out undissolved solid contaminants
can instead of or in addition the
Filter device 26 a centrifugal separator,
e.g. a decanter, in the
Das Wirkprinzip der Erfindung bzw. des Ionenaustauschers beruht darauf, daß Druckfarben-Inhaltsstoffe, wie zum Beispiel Mangansalze und Kobaltsalze sowie Peroxyde, an stark saure und/oder an stark basische Ionenaustauscher, vorzugsweise Ionenaustauscher-Harze, gebunden werden. Der Ionenaustauscher ist vorzugsweise ein sogenannter Mischbettreaktor, welcher nach dem sogenannten Mischbettverfahren arbeitet. Dadurch werden sowohl die Druckfarben-Inhaltsstoffe, welche durch saure Ionenaustauscher, als auch die, welche durch basische Ionenaustauscher gebunden werden können, aus der Reinigungsflüssigkeit ausgeschieden. The principle of operation of the invention or Ion exchanger is based on the fact that printing ink ingredients, such as manganese salts and Cobalt salts and peroxides, on strongly acidic and / or on strongly basic ion exchangers, preferably Ion exchange resins are bound. The Ion exchanger is preferably a so-called Mixed bed reactor, which according to the so-called Mixed bed process works. This will both Ink ingredients, which by acid Ion exchangers, as well as those which are made by basic Ion exchangers can be bound from the Cleaning liquid excreted.
Die Erfindung kann auch als "absorbtive Lösemittelreinigungsanlage für Offsetmaschinen" oder als "Regenerationsverfahren für Drucktuchreinigung" bezeichnet werden. Vorzugsweise werden für die Erfindung austauschbare patronenförmige Ionenaustauscher-Filterelemente verwendet.The invention can also be called "absorbent Solvent cleaning system for offset machines "or as "regeneration process for printing blanket cleaning" be designated. Preferably be for the Replaceable cartridge-shaped invention Ion exchange filter elements used.
Im Rahmen der Erfindung bedeutet "mindestens", daß eines oder mehrere der so bezeichneten Elemente in Parallelschaltung oder in Reihenschaltung zueinander verwendet werden können.In the context of the invention "at least" means that one or more of the elements so designated in Parallel connection or series connection to each other can be used.
Claims (11)
- A washing device of a machine of the graphics industry for washing inks, fibres, dust and other impurities from rotary elements, with a cleaning fluid, which contains solvent for dissolving at least one of the soluble impurities, the washing device comprising the following: a recirculation circuit (6, 8, 10), which comprises a feed line (8) for the supply of cleaning fluid from a supply receptacle (6) to the rotary element (2) which is to be cleaned and a return line (10) for conveying the cleaning fluid from a washing device (4, 14, 16) used for washing the rotary element (2) back to the supply receptacle (6); cleaning means (32) for cleaning the returned contaminated cleaning fluid on its path in the return line (10); characterised in that the cleaning means comprises at least one ion exchanger (32), which is constructed in such a manner that it separates at least one of the dissolved impurities from the cleaning fluid by ion exchange.
- A washing device according to claim 1, characterised in that the ion exchanger (32) comprises at least one ion filter compound for the ionic filtering of inks, more particularly alkaline inks and/or acidic inks.
- A washing device according to claim 1 or 2, characterised in that the ion exchanger (32) comprises an ion filter compound for the ionic filtering of peroxides from the cleaning fluid.
- A washing device according to one of the preceding claims, characterised in that the ion filter compound comprises a plurality of different ion exchange resins.
- A washing device according to one of the preceding claims, characterised in that means (54, 55, 56, 58) for regenerating the ion exchanger (32) are provided, without having to fully or partially remove or disassemble the ion exchanger.
- A washing device according to one of claims 1 to 4, characterised in that the ion filter compound (50) of the ion exchanger (32) is replaceably arranged.
- A washing device according to one of the preceding claims, characterised in that arranged upstream of the ion exchanger (32) in the direction of flow is a device (26) for filtering out solid impurities from the returned cleaning fluid.
- A method for a machine of the graphics industry for washing inks, fibres, dust and other impurities from rotary elements, with a cleaning fluid, which contains solvent for dissolving at least one of the soluble impurities, the method comprising the following steps: recirculation of the cleaning fluid from a supply receptacle (6) to a cleaning device (4, 14, 16) for cleaning the rotary element (2) and back again into the supply receptacle (6); cleaning of the cleaning fluid on its return path from the cleaning device (4, 14, 16) to the supply receptacle (6);
characterised in that the cleaning fluid is conveyed for its cleaning through at least one ion exchanger (32), which is constructed in such a manner that it separates at least one of the impurities dissolved in the cleaning fluid from the cleaning fluid by ion exchange with said impurities. - A method according to claim 8, characterised in that at least inks, alkaline and/or acidic inks are separated from the cleaning fluid in the ion exchanger (32) by ion exchange with said inks.
- A method according to claim 8 or 9, characterised in that peroxides are filtered out in the ion exchanger (32) by ion exchange.
- A method according to one of claims 8 to 10, characterised in that solid impurities are filtered out of the cleaning fluid upstream of the ion exchanger by means of a filter device (26).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19546972A DE19546972A1 (en) | 1995-12-15 | 1995-12-15 | Washing machine of a machine of the graphic industry |
DE19546972 | 1995-12-15 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0779150A1 EP0779150A1 (en) | 1997-06-18 |
EP0779150B1 true EP0779150B1 (en) | 2000-03-01 |
Family
ID=7780286
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP96115102A Expired - Lifetime EP0779150B1 (en) | 1995-12-15 | 1996-09-20 | Washing system of graphic industry machine |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0779150B1 (en) |
AT (1) | ATE190010T1 (en) |
DE (2) | DE19546972A1 (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10061870B4 (en) * | 2000-12-12 | 2011-06-09 | Platsch Gmbh & Co.Kg | Method and device for filtering dampening solution |
DE10132600B4 (en) * | 2001-07-05 | 2006-10-05 | Man Roland Druckmaschinen Ag | Preparation of used detergents |
ITSA20050007A1 (en) * | 2005-03-10 | 2006-09-11 | Uni Di Salerno | PROCESS FOR CLEANING CYLINDERS FROM PRINTING AND / OR COUPLING, USED IN GRAPHIC INDUSTRY AND IN THE PRODUCTION OF FLEXIBLE PACKAGING. |
CN118201777A (en) * | 2021-11-03 | 2024-06-14 | 博斯特比勒费尔德有限公司 | System and printing machine for recovering cleaning solution |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3005236C2 (en) * | 1980-02-13 | 1983-05-19 | Mathias Bäuerle GmbH, 7742 St Georgen | Washing unit for an offset machine |
DE3025639A1 (en) * | 1980-07-07 | 1982-01-21 | Maschinenfabrik Goebel Gmbh, 6100 Darmstadt | DEVICE FOR CLEANING A WIPING CYLINDER ON A STEEL PRINTING MACHINE |
DE3427652A1 (en) * | 1983-07-28 | 1985-02-07 | Canon K.K., Tokio/Tokyo | Dyestuff purification and ink production system |
DE8801323U1 (en) * | 1988-02-03 | 1988-03-17 | Gisch, Lieselotte, 2081 Alveslohe | Device for washing dampening rollers |
DE4113813A1 (en) * | 1991-04-27 | 1992-10-29 | Gat Handelsgesellschaft Fuer I | Cleaning waste water from printing operations - in which desorption air is purified in activated carbon@ filter before venting, and desorbed water is further filtered |
DE4116762A1 (en) * | 1991-05-23 | 1992-11-26 | Roland Man Druckmasch | DEVICE FOR WASHING A CYLINDER OF A PRINTING MACHINE |
DE4129189C2 (en) * | 1991-09-03 | 1997-02-27 | Roland Man Druckmasch | Device for washing a cylinder of a printing press |
DE9115948U1 (en) * | 1991-12-21 | 1992-02-20 | Lößner, Wolfgang, 6229 Kiedrich | Washing system for the blanket cylinder of an offset printing machine |
DE4216389A1 (en) * | 1992-05-18 | 1993-11-25 | Baldwin Gegenheimer Gmbh | Printing unit washing device for printing machines |
DE4216423A1 (en) * | 1992-05-18 | 1993-11-25 | Baldwin Gegenheimer Gmbh | Printing unit washing device for printing machines |
US5367982A (en) * | 1993-02-25 | 1994-11-29 | Howard W. DeMoore | Automatic coating circulation and wash-up system for printing presses |
IT1266557B1 (en) * | 1993-07-21 | 1997-01-09 | Arturo Guerini | PROCEDURE AND EQUIPMENT FOR TREATMENT OF WET LIQUID IN PRINTING MACHINES, ESPECIALLY FOR |
US5402724A (en) * | 1993-10-29 | 1995-04-04 | Paper Converting Machine Company | Method and apparatus for washing the deck of a press or coater |
-
1995
- 1995-12-15 DE DE19546972A patent/DE19546972A1/en not_active Withdrawn
-
1996
- 1996-09-20 AT AT96115102T patent/ATE190010T1/en not_active IP Right Cessation
- 1996-09-20 DE DE59604538T patent/DE59604538D1/en not_active Expired - Fee Related
- 1996-09-20 EP EP96115102A patent/EP0779150B1/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
DE19546972A1 (en) | 1997-06-19 |
ATE190010T1 (en) | 2000-03-15 |
EP0779150A1 (en) | 1997-06-18 |
DE59604538D1 (en) | 2000-04-06 |
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