DE102008003447B4 - Decentralized cleaning system - Google Patents

Abstract

Arrangement on a printing machine (1),
the arrangement comprising a first process fluid inlet (13), a first process fluid outlet (14) and a first process fluid purification device (11) associated with a first printing unit (10) of the printing machine (1),
wherein the first process fluid inlet (13) is designed such that the first printing unit (10) can be supplied with a first process fluid inlet (SZ1) via the first process fluid inlet (13) during operation of the printing press (1),
wherein the first process fluid drain (14) is designed such that the entire process fluid to be purified occurring in the first printing unit (10) in the form of a first process fluid effluent (SA1) during operation of the printing press (1) via the first process fluid drain (14) of the first process fluid cleaning device ( 11) can be fed,
wherein the first process fluid purification device (11) has a purification performance equal to or greater than the first process fluid effluent (SA1) and
wherein the first process fluid cleaning device (11) and the first process fluid inlet (13) communicate with each other in such a way that the fluid purified in the first process fluid purification device (11) is ...

Description

The The invention relates to an arrangement on a printing press with a Process fluid purification device, in particular a dampening solution cleaning device on an offset printing machine, a printing press with such Arrangement and a method for the purification of process fluid, in particular of dampening solution.

in the In the state of the art, dampening units are used in offset printing machines. The task of the dampening unit is to apply a dampening solution evenly to the dampening solution Apply printing plate of an offset printing press. This is the Dampening solution z. B. over a water tank, nozzles or in a similar way Applied to a first roller. A water film is made by the roller usually over different other rollers possible evenly applied the printing plate of the printing press.

Excess dampening solution is normally collected, cleaned, processed and the dampening unit fed again.

There In operation, contamination of the dampening solution z. B. by color components and paper dust may occur, the soiled dampening solution usually z. B. cleaned by filtering.

The DE 100 61 870 A1 discloses a cleaning system in which a feed pump removes fountain solution from a buffer and pumps the dampening water into a cleaning unit. In the cleaning unit, a further pump is provided, which presses the fountain solution through a pressure filter. According to the disclosure of this document, the entire fountain solution flow is passed through the cleaning unit. Such a cleaning unit must therefore have a certain size and is relatively expensive to produce.

In contrast, is Known from the prior art, a cleaning unit, in which the dampening water from a central tank from which the printing units a printing press are fed, funded by a pump and passed through various cleaning devices. The cleaned Dampening water is returned to the central tank after cleaning recycled. The revealed Device has the disadvantage that the fountain solution over a Drain from the central tank must be promoted regularly in one certain area of the central tank is located and therefore only in this particular area withdrawing dampening water, so that Dampening water from other areas in the central tank proportionate to a lesser extent passed through the cleaning device and therefore not cleaned becomes. This applies, for example, to dampening water in the area of a dampening water level in the central tank too, since the drain is usually well below the dampened water level is arranged.

Furthermore, in DE 40 38 021 A1 a wet offset printing machine with six printing units shown. The dampening units are located in a wet medium supply circuit with a supply line, which comes from a cooling and conditioning unit and to which all six dampening units are connected. For the return of the dampening medium two return lines leading back to the cooling and treatment device are provided. The cooling and conditioning device has a reservoir, in the dampening medium is. From the reservoir, the dampening medium is conveyed through a filter and an adjoining, leading through a cooling unit cooling section in the flow line and the connected dampening units.

The Utility Model DE 20 2006 007 599 U1 shows a system for dampening solution for a printing press consisting of a variety of dampening units. The dampening solution preparation device is connected to the dampening system of the printing machine via the dampening solution circuit. A common dampening solution flow starting from a peripheral device branches off into individual dampening system feed lines, each of which leads to a dampening unit. The dampening solution used is discharged from the dampening units by dampening unit return lines, which open into a common dampening solution return, which is connected to the peripheral device and the dampening solution back to the dampening solution processing unit, where it is prepared for reuse and back into the flow is initiated.

EP 1 897 688 A2 discloses a system for dampening solution for offset printing with a dampening solution processing device and a device for feeding one or more liquid raw materials for dampening solution processing in the dampening solution processing device. The dampening solution treatment device comprises a dampening solution tank, which is at the same time part of a dampening solution circuit, in which the dampening solution is pumped to the printing press and back to the dampening solution tank. For this purpose, a pump is arranged in the inlet of the printing press. The dampening solution returning through the return is filtered through a filter before it reaches the dampening solution tank again.

JP 2003211625 A (Abstr.) Shows a system for dampening treatment, which takes place in a circuit, the plant a filter device and a concentration control device, which supplies the dampening solution isopropanol to the concentration of adapt.

1 shows a schematic representation of a dampening solution cleaning and processing plant, as it is commonly used in the prior art in printing machines. In this case, a number of individual processing equipment A is shown, each associated with a printing unit D of the printing press. Also shown are a centrally provided cleaning system R in the interior of which a schematically illustrated settling tank S, in which suspended particles settle and are separated from the dampening solution as part of a pre-cleaning, and a cross-flow filter unit Q are shown.

There it is very expensive and expensive to produce such cleaning equipment R with a cleaning performance, which the entire or the entire to be cleaned dampening solution stream equivalent, become conventional Arrangements on printing machines provided with cleaning systems R, which only have a significantly lower cleaning performance. Fountain solution, which arises at the printing press and can not immediately be cleaned, is stored in a process fluid buffer P stored temporarily and cleaned during printing breaks.

The purified dampening solution is in the in 1 shown after cleaning a process fluid buffer Z and stored there stored until it is used again in the next printing process. A process fluid buffer memory P therefore has at least one volume which is equal to or greater than the product of the time of operation multiplied by the volume flow difference from the total dampening solution flow to be cleaned and the cleaning performance of the connected cleaning system. The process agent buffer Z has conventionally this volume, but it may be slightly smaller or omitted, if the purified dampening solution is partially or wholly absorbed in the individual treatment plants A.

line connections L do not deduce from closer Traps shown at the printing units the fountain solution stream into the process fluid buffer memory P and from the process resource buffer Z back to the printing units D.

It is still a variety of other devices known which intended to solve common problems or offer detailed solutions. There is no particular general direction in the prior art the different solutions together is. The technical development concerning the dampening solution supply of Printing machines is not finished yet.

there is in the printing industry, especially in offset printing, the use dampening solution containing an alcohol component Problem is because such additives as harmful to health and the environment be valid. A goal of the development is therefore, the alcohol constituent in dampening solution and / or to reduce the dampening solution consumption, what has the disadvantage that dampening solution with reduced alcohol content stronger are prone to contamination due to microorganisms.

In addition, fall in operation larger quantities Dampening solution, which must be renewed at certain intervals, especially if have these contaminants. The ones with a disposal and renewal associated costs are significant, so that already minor improvements the dampening solution supply make economic sense.

task

It It is an object of the invention to provide an arrangement on a printing press, a printing machine with such an arrangement and a method for Design and to provide for the operation of such an arrangement, wherein ensured by the arrangement a low consumption of process agents is avoided and impurities in the process fluid or reduced become.

Solution of the task

The The object is achieved by the devices and the method according to claims 1, 19 and 20 solved. Advantageous embodiments are in the subclaims disclosed.

A first aspect of the invention relates to an arrangement on a printing machine, wherein the arrangement has a first process fluid inlet, a first process fluid outlet and a first process fluid purification device, which are associated with a first printing unit of the printing press, wherein the first process fluid inlet is designed such that the first printing unit in Operation of the printing press can be supplied via the first process fluid inlet with a first process fluid flow, wherein the first process fluid flow is designed so that the entire process fluid incurred in the first printing unit during operation of the printing machine in the form of a first process fluid outflow over the first process fluid flow of the first process fluid cleaning device can be supplied wherein the first process fluid purification device has a purifying performance equal to or greater than the first process fluid effluent, and wherein the first process fluid purifying device and the he The process fluid inlet are connected to one another in such a way that the process fluid effluent purified in the first process fluid purification device flows into the process fluid inlet the first process fluid inlet is recirculated, wherein the arrangement has a second process fluid inlet, a second process fluid outlet and a second process fluid cleaning device associated with a second printing unit of the printing press, wherein the second process fluid inlet is designed such that the second printing unit during operation of the printing press on the second process fluid inlet can be supplied with a second process fluid flow, wherein the second process fluid flow is designed such that the entire occurring at the second printing unit in the operation of the printing machine to be cleaned process fluid in the form of a second process fluid effluent via the second process fluid flow to the second process fluid cleaning device, the second process fluid cleaning device a cleaning performance which is equal to or greater than the second process fluid outflow and wherein the second process fluid cleaning device and the second process fluid z are in communication with each other such that the second process fluid effluent purified in the second process fluid purification device is recirculatable to the second process fluid inlet.

The entire costs incurred at the first printing unit in the operation of the printing press Essentially, the process fluid to be purified comprises the entire am first printing unit resulting contaminated process fluid. unconsidered remain fluid flows, which are consumed in the machine, leakage currents or Fluid streams, which bypassed the process fluid purification device and be recirculated without cleaning. A process fluid purification device denotes a device in the impurities of the process fluid, in particular a dampening solution, which z. B. by color components and paper dust can occur can be eliminated. This will be the soiled dampening solution z. B. by filtering in the process fluid cleaning device cleaned. Such a process fluid purification device comprises preferably a separator and / or a cross-flow filter and / or a filter unit with exchangeable filters and / or a cascade system. The cleaning performance, which is also called cleaning capacity could, denotes the process fluid volume or the process fluid mass, which of the process fluid purification device per unit time can be cleaned. In other words, the cleaning performance or cleaning capacity the process fluid cleaning device such that the first process fluid effluent (also fluid flows denote volume or Mass per unit of time) through the process fluid purifier essentially cleanable in real time. The cleaning capacity of the first Cleaning device is therefore substantially equal to or greater than the contaminated process fluid volume at the first printing unit in the Operation of the printing press per unit time is incurred. For a cleaning performance the first cleaning device, which is designed slightly smaller than the resulting first process fluid effluent, the excess part of the process fluid preferably in a drip pan of the dampening unit, in a separation tank the cleaning device or in other containers are cached. So can z. B. smaller peaks of the process fluid effluent are compensated. However, preferred is an arrangement which is so designed is that the resulting process fluid effluent including possible peak currents can be cleaned in real time. The resulting contaminated fluid quantity Accordingly, per unit time is substantially equal to or less as that of the first process fluid purification device per unit time cleanable fluid quantity.

Of the purified process fluid stream is recirculated and the first process fluid feed to disposal posed. In this case, the fluid streams defined in this way are used as a derivative the fluid volume or the fluid mass after the time viewed or at least only designate about short periods a printing machine operating time averaged volumes or masses. By this arrangement, a decentralized process fluid purification be provided in the large, centrally planned storage container (z. B. for intermediate storage of the contaminated and / or purified Process fluids) and a corresponding piping can be avoided can. The Formulation "in the first process fluid inlet recirculatable "is to be understood in such a way that the arrangement described is preferably a circuit in which It makes sense that the circulating process fluid is preferred Dampening solution, as far as it is not consumed, continuously during operation is circulated. Such a "recirculation in the first Process fluid supply "can directly done, z. When between the first process fluid cleaning device and the first printing unit no process fluid treatment device provided is, or the dampening solution may be in another place in the cycle be recycled in such a way that the dampening solution reaches the process fluid feed on its subsequent path, z. B. over a process fluid conditioner described below. The circulation In the case of a dampening solution circuit, it is preferably an open circuit. This means that a proportion of dampening solution z. B. over the Humidification be transferred during the printing process in the printing process can and then i. d. R. is no longer traceable into the circulation. Also conceivable losses due to evaporation, leakage or the like. More fountain solution can z. B. in the cleaning device the Lost circulation. Such used dampening solution is preferably replaced in the circulation.

Also preferred is an embodiment of the arrangement in which the arrangement further comprises a first process fluid treatment device, wherein the first process fluid inlet is arranged between the first process fluid treatment device and the first printing unit such that the first process fluid flow with which the first printing unit can be supplied is removable from the first process fluid treatment device. Such a process fluid treatment device refers to a device in which the dampening solution, which is supplied to the dampening solution supply, is preferably checked for its quality and / or adjusted. This is preferably done continuously. The term quality preferably comprises a composition of the dampening solution (eg a water-alcohol ratio and / or other constituents) and / or the temperature and / or the residual stress with colored particles and / or the like. Furthermore, such a process fluid treatment device is preferably designed such that identified deficiencies in the process fluid treatment device can be eliminated. For example, an undesired water-alcohol ratio can be compensated for by addition of missing constituents (usually alcohol), a deviation from the desired temperature can be compensated by a process fluid temperature control, etc. Such a first process fluid treatment device is preferably designed as a compact assembly, which z. B. in the form of a device cabinet externally at the first printing units can be set up and is connectable via fluid lines to the printing unit and / or the first process fluid cleaning device.

A further advantageous embodiment relates to an arrangement in which the arrangement further comprises a first Process fluid recirculation line, wherein the first process fluid recirculation line such between the first process fluid cleaning device and the first process fluid treatment device is arranged, that the in the first process fluid cleaning device purified first Process fluid effluent over the first process fluid recirculation line into the first process fluid treatment device conductive is, and from there into the process fluid inlet is recirculated. In this case, the arrangement with the first process fluid recirculation line is between the first process fluid purification device and the first process fluid treatment device preferred configured such that the purified first process fluid effluent without external power supply in the first process fluid treatment device conductive is. The arrangement therefore preferably has no conveying device, in particular no pump, between the first process fluid purification device and the first Process fluid treatment unit on.

Preferably such an arrangement has a design in which the arrangement a first process fluid return line which is between the first printing unit and the first process fluid processing device such is arranged, that a first process fluid partial stream from the first printing unit directly to the first process fluid treatment device can be fed. This can be z. B. be advantageous if a fountain solution circuit is provided over the z. B. a spray dampening unit is supplied with dampening solution. In the fountain solution can dampening solution advantageously circulate under pressure, so preferably only the required dampening solution in the spray dampening unit is removed from the dampening solution and the rest of the not required and therefore uncontaminated dampening solution via the first process fluid return line back into the treatment device guided becomes.

Prefers is also such an arrangement in which the first process fluid treatment device and the first process fluid purification device housed in a first housing form the first combined process fluid purification and treatment device. Such a housing can preferably be performed closed to the functional components and / or a plurality of housing elements exhibit. Such a first combined process fluid purification and preparation device is preferably designed as a compact assembly, which z. B. in the form of a device cabinet can be set up externally on the first printing unit and via fluid lines (preferred the first process fluid inlet, the first process fluid outlet and / or the first process fluid return line) can be connected to the printing unit. In this preferred embodiment For example, the first process fluid recirculation line is preferably inside of the equipment cabinet arranged. Such an arrangement has z. B. the advantage that due to the spatial Close between the first process fluid cleaning device and the first process fluid treatment device, a flow resistance in the first process fluid recirculation line particularly low can be held, so that a conveying device, in particular a feed pump, light can be avoided. For this purpose, z. B. the first process fluid cleaning device preferably spatially be arranged above the first process fluid treatment device.

A further advantageous embodiment relates Such an arrangement in which the first process fluid treatment device and the first process fluid purification device a common first control exhibit.

Farther preferred is a design of an arrangement in which between the first printing unit and the first process fluid cleaning device no Process fluid buffer storage for storing contaminated process fluid is provided.

The term "between printing unit and process fluid cleaning device" in this sense, the distance along which the Prozeßfluidabstrom between the area of the Printing unit, where the process fluid effluent is formed, and the process fluid purification device, in which the process fluid effluent is purified flows. In this case, this route also includes the interior of the process fluid purification device up to the last functional unit in which the last cleaning step is performed.

Of the Term process fluid buffer means a container, in the portion of the process fluid effluent passed and stored becomes, which exceeds the cleaning performance of the process fluid purification device. The process fluid to be cleaned, which is conventionally in operation stored in such process fluid buffers would be in service pauses supplied from the process fluid buffer memory of the process fluid purification device and cleaned. A process fluid buffer as used herein Sense would therefore, have at least one volume equal to or greater than as the product of time multiplied by the flow difference from process fluid effluent and cleaning performance of the connected Process fluid cleaning device. A process fluid buffer in the sense used here is therefore a container in which to be cleaned Process fluid is stored until the process fluid cleaning device in operation breaks the printing press has the capacity intermediate storage Process fluid to clean.

When Process fluid buffers in the sense will therefore not catch basins viewed in the dampening unit, in which the moistening agent when moistening the rollers excess is collected during operation. Also not considered a process fluid buffer be separating tanks, Put container or similar smaller containers, which in operation z. B. used in process fluid purification devices become. In such containers be z. B. in the context of a dampening solution pre-cleaning fountain solution contamination separated from dampening solution. Such fountain solution impurities are z. As paper, dust, paint particles or the like. These are in such containers dampening solution by settling or floating and Dissipate Skimmer or similar separated from dampening solution. Such containers, not as a process fluid buffer are preferred to have a container volume smaller than the process fluid volume caused by the contaminated process fluid effluent is that at a running machine of the press on the first Printing unit resulting to be cleaned process fluid outflow in a period of 4 hours.

A Such preferred arrangement in which between printing unit and process fluid cleaning device no process fluid buffer memory is provided has various Advantages. For example, at Such an arrangement, the laying of fluid lines, the especially in process fluid buffers, that of several printing units be fed, consuming can be. Further, conventional ones Cache often at a low altitude arranged so that pumps can be saved, the the process fluid from such process fluid buffer storage would need to bring the level of process fluid purification device. Finally will contamination of bio-organisms in dampening solution during longer storage times of the process fluid in such process fluid buffers.

Further Such an arrangement preferably has a design in which between the first process fluid cleaning device and the first printing unit no process fluid buffer for storing purified Process fluid is provided.

With the term "between Process fluid cleaning device and printing unit "in this sense, the track along which the process fluid effluent to the printing unit is directed. This route begins at the point where from the process fluid cleaning device completely purified process fluid is removed, ie in the flow direction right behind the last functional unit of the process fluid cleaning device in which the last cleaning step is performed.

Of the Term Process fluid cache means a container, in directed the proportion of purified process fluid effluent and is stored, the first was stored in the process fluid buffer and during breaks from the process fluid buffer of the process fluid purifier was fed and cleaned. A process fluid cache in the sense used here therefore preferably has the same volume on as the already described process fluid buffer memory. One Process fluid buffer is thus a container in which the pauses in operation the printing press cleaned process fluid is stored. Therefore, as process fluid latches in the sense will not container in process fluid treatment equipment viewed in which the process fluid for use on the fly is processed. Prepared means tempered to the isopropanol, pH value, hardness value, and / or the like controlled and / or adjusted.

Such a preferred arrangement, in which no process fluid buffer is provided between the process fluid cleaning device and printing unit, has various advantages. For example, in such an arrangement eliminating the laying of fluid lines, in particular in Prozessflu idbischenspeicher that feed multiple printing units, can be complex. Furthermore, conventional latches are often located at a low height level, so that pumps can be saved, which would bring the process fluid from such process fluid storage tanks to the level of the process fluid treatment device. Finally, contamination of bio-organisms in the dampening solution during prolonged storage times of the process fluid in such process fluid buffers is avoided.

Prefers is also an embodiment of the Arrangement in which between the described, on the first printing unit arranged first components and components on other printing units the printing press does not have a line connection during normal operation, an exchange of process fluid with components of an arrangement another printing unit allows. The first process fluid cleaning device or the other first Components (process fluid treatment equipment, etc.) are therefore preferred exclusively for the first one Printing unit used. This can be z. B. the composition the process fluid, in particular a dampening solution (ie, for example Additives in the dampening solution and / or the alcohol content of the dampening solution), individually to the needs in the first printing unit.

The Arrangement according to the present The invention further comprises a second process fluid inlet, a second process fluid drain and a second process fluid purification device on, which are associated with a second printing unit of the printing press, wherein the second process fluid inlet is configured such that the second printing unit during operation of the printing press via the second process fluid inlet can be supplied with a second process fluid flow, wherein the second process fluid drain is designed such that the entire at the second printing unit in the operation of the printing press accumulating too cleaning process fluid in the form of a second process fluid effluent over the second process fluid drain can be fed to the second process fluid purification device, wherein the second process fluid cleaning device is a cleaning power which is the same or larger as the second process fluid effluent, and wherein the second process fluid purifier and the process fluid inlet are so interconnected that the process fluid effluent purified in the second process fluid purification device can be recirculated into the second process fluid inlet.

In Referring to the second components (second process fluid inlet, second Process fluid drain, second process fluid purification device, etc.) the arrangement at the second printing unit apply in this regard and in the following the statements made in relation to the first printing unit. The corresponding design of the arrangement on the first, on the second Printing unit and / or on other printing units has the advantage of decentralized cleaning of the process fluid. This will be decentralized Process fluid cleaning devices provided, each one individual printing unit are assigned. The process fluid purification devices each preferably have a cleaning performance, which in Essentially as big or as big is larger like the contaminated process fluid stream of the respective printing unit. It is preferred in a printing machine with multiple printing units associated with each printing unit a process fluid cleaning device, Consequently, the cleaning of the process fluid is decentralized.

Prefers is also an embodiment of the Arrangement, wherein the arrangement further comprises a second process fluid treatment device, wherein the second process fluid inlet between the second process fluid treatment device and the second printing unit is arranged, that the second process fluid inflow, with which the second printing unit can be supplied, the second process fluid processing unit can be removed is.

A further advantageous embodiment relates to an arrangement in which the arrangement further has a second Process fluid recirculation line, wherein the second process fluid recirculation line such between the second process fluid cleaning device and the second process fluid treatment device is arranged, that the in the second process fluid cleaning device purified second Process fluid effluent over the second process fluid recirculation line into the second process fluid treatment device conductive is, and from there into the second process fluid inlet recirculated is. In this case, the arrangement with the second process fluid recirculation line between the second process fluid cleaning device and the second Process fluid treatment unit preferably designed such that the purified second process fluid effluent without external power supply in the second process fluid treatment device conductive is. The arrangement therefore preferably has no conveying device, in particular no pump, between the second process fluid cleaning device and the second Process fluid treatment unit on

Preferably such an arrangement has a design in which the arrangement a second process fluid return line which is between the second printing unit and the second Process fluid treatment unit is arranged such that a second process fluid partial stream from the second Printing unit can be fed directly to the second process fluid processing unit.

Prefers is also such an arrangement in which the second process fluid processing apparatus and the second process fluid purification device housed in a second housing form second combined process fluid purification and treatment device. Such an arrangement has z. B. has the advantage that due the spatial proximity between the second process fluid cleaning device and the second process fluid treatment device, a flow resistance kept particularly low in the second process fluid recirculation line so that a conveyor, in particular a delivery pump, can be easily avoided. For this purpose, z. B. the second Process fluid cleaning device preferably spatially above the second Process fluid treatment device to be ordered.

A further advantageous embodiment relates Such an arrangement in which the second process fluid treatment device and the second process fluid cleaning device a common second Have control.

Farther preferred is a design of an arrangement in which between the second printing unit and the second process fluid cleaning device no process fluid buffer for storing contaminated Process fluid is provided.

Further Such an arrangement preferably has a design in which between the second process fluid cleaning device and the second Printer no process fluid buffer for storing is provided purified process fluid.

Prefers is also an embodiment of the Arrangement in which also in relation to further, preferably all printing units the printing machine, the arrangement according to one of the above described arrangements is designed.

The arrangements described above have the advantage that process fluid can be processed quickly, with the risk of contamination is reduced by microbial contamination. Furthermore, a decentralized arrangement allows the devices whereby memory or buffer tanks a piping and / or corresponding Pumps can be saved. As a result, the total on the printing machine to be provided Amount of process fluid can be significantly reduced. Another advantage is that by the separate execution per printing unit depending on Druckwerk different process fluid compositions and / or Process fluid cleaning devices can be used, the optimally to the needs The respective printing unit can be tuned. Particularly preferred therefore an arrangement in which for each printing unit a described process fluid cleaning and treatment device separately is provided.

A further advantageous embodiment relates to such an arrangement in which the arrangement part a dampening solution supply for a dampening unit of a printing unit of a printing press, wherein the Process fluid is a dampening solution and wherein the described process fluid-carrying parts wet-carrying Parts are. Basically a described arrangement for Various process fluids used on printing presses are used come, like B. also for Washing liquids, hydraulic oils or similar. However, the arrangement is particularly well suited, as in relation to this embodiment claimed for the use for dampening solution supply. In an arrangement for fountain solution supply would be accordingly a process fluid purification device a dampening solution purification device, a process fluid treatment device a dampening solution treatment device, a process fluid inlet a fountain solution inlet, a process fluid drain a dampening solution outlet, a process fluid recirculation line a Dampening solution recirculation line, a process fluid return line a dampening solution return line, a process fluid feed, a fountain solution feed, a process fluid effluent a dampening solution effluent, a process fluid partial flow a dampening solution partial flow and a combined process fluid purification and treatment device a combined Dampening solution cleaning and treatment device.

One second aspect of the invention relates to a printing press with a previously described arrangement.

A third aspect relates to a method comprising the steps
Determining a first process fluid effluent from contaminated process fluid to be cleaned, which is produced at a first printing unit of a printing press during operation per unit time,
Determining a second process fluid effluent of contaminated process fluid to be cleaned, which is obtained at a second printing unit of the printing press during operation per unit time,
Providing an assembly with a first process fluid cleaning device at the first printing unit of the printing press, wherein the provided first process fluid cleaning device is provided with a cleaning performance equal to or greater than the first process fluid effluent,
Providing an arrangement with a second process fluid cleaning device at the second printing unit of the printing machine, wherein the provided second process fluid cleaning device is provided with a cleaning performance equal to or greater than the second process fluid effluent is
wherein the providing takes place in such a way that during operation of the printing press the entire process fluid accumulating at the first printing unit is controllably supplied to the first process fluid circuit by the first process fluid cleaning device and in the cleaned state to the first process fluid circuit and wherein the provision is made such that during operation of the printing machine Whole process fluid at the second printing unit for cleaning process by the second process fluid cleaning device is conductive and in the purified state the second process fluid circuit can be fed again.

there refers to the step of determining a process fluid effluent preferred to the design or setup phase of the printing press in Connection with the volumetric flow design of the process fluid purification device, d. H. It is a process fluid effluent is determined, which is expected at a Printing unit will occur during normal operation or usually already incurred. This can also be flashed respectively. According to such a determined value becomes a process fluid purification device designed and prepared. In other preferred embodiments The method may include the step of determining a process fluid effluent even during operation, z. B. by appropriately provided Sensors o. Ä., and any excess process fluid stream other process fluid purification device (s) are fed, the z. B. can be arranged on other printing units.

Further preferred modifications of this method will be apparent from the described preferred embodiments of one of the arrangements shown above and their application.

Brief description of the drawings

In the figures shows:

1 a conventional arrangement for cleaning and processing dampening solution in the prior art,

2a a schematic view of a printing unit of a printing machine with a preferred embodiment of an inventive arrangement and

2 B a schematic view of a printing machine with multiple printing units with a preferred embodiment of an inventive arrangement.

Detailed description the drawing

1 shows a conventional arrangement for cleaning and processing dampening solution in the prior art. With respect to the arrangement in the prior art, reference may be made to the statements made in the introduction to the description.

2a shows a schematic view of a printing unit of a printing press with a preferred embodiment of an inventive arrangement, and 2 B shows a schematic view of a printing machine with multiple printing units with a preferred embodiment of an inventive arrangement.

It puts 2a essentially an enlarged section 2 B so to avoid repetition only the differences are highlighted and below the similarities are described only once.

2 B shows a first printing unit 10 , a second printing unit 20 and other printing units of a printing press 1 ,

In this case, the illustrated printing machine 1 an arrangement for supplying the individual printing units with process fluid, which is designed in the illustrated preferred embodiment as dampening solution supply.

In this case, the preferred arrangement comprises at the first printing unit 10 a first process fluid treatment device 12 and a first process fluid purification device 11 , The first process fluid purification device 11 is with the first printing unit 10 via a first process fluid inlet 13 connected. In the process dampening solution is taken from a tank in the first process fluid treatment device 12 pumped by a pump to a dampening unit in the first printing unit. In the illustrated preferred embodiment, the dampening unit via a designed as a partial circuit fluid line with the process fluid processing unit 12 connected. This means that a first process fluid feed SZ1 is pumped via the pump to the dampening unit. In dampening a required for printing proportion of dampening solution z. B. taken over a provided in the dampening spray device and the rest of the dampening solution is in the form of a first process fluid part stream ST1 via a first process fluid return line 16 into the first process fluid treatment device 12 recycled. Also conceivable is an arrangement in which the first process fluid return line 16 is not provided, so that the entire amount of fluid that is pumped to the dampening unit and is not consumed in the printing process, following the first process fluid cleaning device 11 is supplied.

The proportion of dampening solution required for printing, which is applied to corresponding pressure rollers in the Printing unit is applied, consumed in part in the printing process, that is, it is transferred from the corresponding rollers on the substrate and / or evaporated, another part drips from the rollers of the dampening unit and / or the pressure rollers and is in the first printing unit 10 collected. For this purpose are in the first printing unit 10 Not shown collecting devices, eg. B. a drip pan or the like provided. The part of the dampening solution which is not required to be used for printing is usually in the printing unit with elements of the printing press 1 and / or come in contact with dust in the air, which contamination of the dampening solution, for. B. by paper dust and / or color residues can cause. This part of the fountain solution must therefore be cleaned and is the first process fluid effluent SA1 via the first process fluid drain 14 the process fluid purification device 11 fed. Here is the process fluid drain 14 preferably carried out by a line or the like, the z. B. between a drip pan and the first process fluid cleaning device 11 extends.

Here, the first process fluid cleaning device 11 according to the invention is designed so that it has a cleaning performance that is substantially equal to or greater than the first process fluid effluent SA1. That is, the first process fluid effluent SA1 may be in operation of the printing press by the first process fluid cleaning device 11 be cleaned without being cached. In this case, the interior of the first process fluid cleaning device 11 shown only schematically. Shown is z. B. a smaller setting container in which heavier components can settle in the dampening solution, or rise in the lighter impurities to the surface of the process fluid and there z. B. can be removed via a skimmer. Furthermore, it is shown schematically that from this setting container, a fluid flow can be pumped via a pump in a cross-flow filter. A purified portion is passed over a first process fluid recirculation line 15 into the first process fluid treatment device 12 recirculated, that is, pumped back, from there again the fluid supply of the first printing unit 10 to be available. Another portion of the dampening solution, which is pumped from the settling tank into the cross-flow filter, flows back into the settling tank, so that in the first process fluid purification device 11 an internal circulation exists. Furthermore, it is conceivable that in the first process fluid cleaning device 11 further functional assemblies are provided, which serve to clean the dampening solution. These come z. As separators, filter units or the like in question.

In the first process fluid treatment device 12 the dampening solution is preferably heated in a tank to a corresponding temperature. Furthermore, the dampening solution in the process fluid treatment device 12 preferably checked for its composition and this, if necessary, balanced.

In principle, it is conceivable within the scope of the invention that the first process fluid cleaning device 11 is designed so that the process fluid effluents from several or all printing units of the printing press 1 in real time, so to speak "online", are cleanable in this one process fluid cleaning device.

Preferably, however, the arrangement of the printing press in each case comprises a process fluid cleaning device per printing unit, so that each process fluid effluent which is obtained in one of the printing units can be cleaned and cleaned during operation in the respective process fluid cleaning device which is assigned to the respective printing unit. Furthermore, it is preferable to combine such a process fluid purification device with the downstream process fluid treatment device such that a compact, combined process fluid purification and treatment device is provided, which preferably in its own housing 18 is housed in which 2a is shown only schematically.

In 2 B is a printing press 1 shown, which has a plurality of printing units. Here are only the first two printing units 10 . 20 and their components provided with reference numerals. The other two illustrated printing units preferably correspond substantially to the first and the second printing unit 10 . 20 ,

Also the second printing unit 20 and the second components of the arrangement arranged thereon in the illustrated preferred embodiment correspond to the first printing unit 10 and the first components disposed thereon. With respect to the description of these second components, reference is therefore made to the above description of the first components.

In this case, in a preferred embodiment, in each case one combined process fluid cleaning and conditioning device can be provided on each of the illustrated printing units, even if in 2 B this in 2a schematically illustrated housing 18 not shown.

As in 2 B is shown, no fluid lines are preferably provided between the arrangements at the respective printing units, so that each of the arrangements on one of the printing units for a represents a closed arrangement. It is also conceivable that in order to create a redundancy, lines between the individual arrangements are provided, so that fluid flows, which z. B. can not be cleaned due to a defect in one of the process fluid cleaning devices can be processed in other process fluid purification devices.

D

printing unit

A

processing plant

R

purifier

S

settling tank

Q

Cross-flow filtration unit

P

Process fluid buffer

Z

Process fluid buffer

L

line connection

1

press

10

first printing unit

11

first Process fluid cleaning device

12

first Process fluid treatment unit

13

first Process fluid inlet

14

first Process fluid flow

15

first Prozessfluidrezirkulationsleitung

16

first Process fluid return line

17

first Combined process fluid cleaning and treatment device

18

first casing

SZ1

first Process fluid influx

SA1

first Prozessfluidabstrom

ST1

first Process fluid partial flow

20

second printing unit

21

second Process fluid cleaning device

22

second Process fluid treatment unit

23

second Process fluid inlet

24

second Process fluid flow

25

second Prozessfluidrezirkulationsleitung

26

second Process fluid return line

Claims (20)

Arrangement on a printing machine ( 1 ), wherein the arrangement comprises a first process fluid inlet ( 13 ), a first process fluid drain ( 14 ) and a first process fluid purification device ( 11 ), which is a first printing unit ( 10 ) of the printing machine ( 1 ), wherein the first process fluid inlet ( 13 ) is designed such that the first printing unit ( 10 ) during operation of the printing press ( 1 ) over the first process fluid inlet ( 13 ) can be supplied with a first process fluid inflow (SZ1), the first process fluid outflow (SZ1) 14 ) is designed such that the entire at the first printing unit ( 10 ) during operation of the printing press ( 1 ) to be cleaned process fluid in the form of a first process fluid effluent (SA1) via the first process fluid flow ( 14 ) of the first process fluid purification device ( 11 ), wherein the first process fluid cleaning device ( 11 ) has a cleaning performance which is equal to or greater than the first process fluid effluent (SA1) and wherein the first process fluid purification device ( 11 ) and the first process fluid feed ( 13 ) in such a way that in the first process fluid cleaning device ( 11 ) purified first process fluid effluent (SA1) into the first process fluid feed ( 13 ) is recirculatable, the arrangement having a second process fluid inlet ( 23 ), a second process fluid drain ( 24 ) and a second process fluid purification device ( 21 ), which a second printing unit ( 20 ) of the printing machine ( 1 ), wherein the second process fluid inlet ( 23 ) is designed such that the second printing unit ( 20 ) during operation of the printing press ( 1 ) via the second process fluid inlet ( 23 ) can be supplied with a second process fluid flow, wherein the second process fluid flow ( 24 ) is designed such that the entire at the second printing unit ( 20 ) during operation of the printing press ( 1 ) to be cleaned process fluid in the form of a second process fluid effluent via the second process fluid flow ( 24 ) of the second process fluid purification device ( 21 ), wherein the second process fluid purification device ( 21 ) has a cleaning performance which is equal to or greater than the second process fluid effluent and wherein the second process fluid purification device ( 21 ) and the second process fluid feed ( 23 ) in such a way that in the second process fluid cleaning device ( 21 ) purified second process fluid effluent into the second process fluid feed ( 23 ) is recirculatable. Arrangement according to claim 1, wherein the arrangement further comprises a first process fluid treatment device ( 12 ), wherein the first process fluid inlet ( 13 ) between the first process fluid treatment device ( 12 ) and the first printing unit ( 10 ) is arranged such that the first process fluid inflow (SZ1), with which the first printing unit ( 10 ), the first process fluid conditioner ( 12 ) is removable. Arrangement according to claim 2, wherein the arrangement further comprises a first process fluid recirculation line ( 15 ), wherein the first process fluid recirculation line ( 15 ) between the first process fluid purification device ( 11 ) and the first process fluid treatment device ( 12 ) is arranged in the first process fluid cleaning device ( 11 ) cleaned first process fluid effluent (SA1) via the first process fluid recirculation line ( 15 ) into the first process fluid treatment device ( 12 ) is conductive, and of there into the process fluid inlet ( 13 ) is recirculatable. Arrangement according to one of claims 2 or 3, wherein the arrangement further comprises a first process fluid return line ( 16 ), which between the first printing unit ( 10 ) and the first process fluid treatment device ( 12 ) is arranged such that a first process fluid partial stream (ST1) from the first printing unit ( 10 ) directly to the first process fluid treatment device ( 12 ) can be fed. Arrangement according to one of claims 2 to 4, wherein the first process fluid treatment device ( 12 ) and the first process fluid cleaning device ( 11 ) one in a first housing ( 18 ) first combined process fluid purification and treatment device ( 17 ) form. Arrangement according to one of claims 2 to 5, wherein the first process fluid treatment device ( 12 ) and the first process fluid purification device ( 11 ) have a common first control. Arrangement according to one of the preceding claims, wherein between the first printing unit ( 10 ) and the first process fluid purification device ( 11 ) no process fluid buffer memory (P) is provided for storing contaminated process fluid. Arrangement according to one of the preceding claims, wherein between the first process fluid cleaning device ( 11 ) and the first printing unit ( 10 ) no process fluid buffer (Z) is provided for storing purified process fluid. Arrangement according to one of the preceding claims, wherein between the described, on the first printing unit ( 10 ) arranged first components and components on other printing units of the printing press ( 1 ) in normal operation no line connection (L) exists, which allows an exchange of process fluid with components of an arrangement on another printing unit. Arrangement according to claim 1, wherein the arrangement further comprises a second process fluid treatment device ( 22 ), wherein the second process fluid inlet ( 23 ) between the second process fluid treatment device ( 22 ) and the second printing unit ( 20 ) is arranged, that the second process fluid influx with which the second printing unit ( 20 ), the second process fluid treatment device ( 22 ) is removable. An assembly as claimed in any one of the preceding claims, wherein the assembly further comprises a second process fluid recirculation line (12). 25 ), wherein the second process fluid recirculation line ( 25 ) between the second process fluid purification device (see 21 ) and the second process fluid treatment device ( 22 ) is arranged in the second process fluid cleaning device ( 21 ) cleaned second process fluid effluent via the second process fluid recirculation line ( 25 ) into the second process fluid treatment device ( 22 ) is conductive, and from there into the second process fluid inlet ( 23 ) is recirculatable. Arrangement according to one of the preceding claims, wherein the arrangement further comprises a second process fluid return line ( 26 ), which between the second printing unit ( 20 ) and the second process fluid treatment device ( 22 ) is arranged such that a second process fluid partial flow from the second printing unit ( 20 ) directly to the second process fluid treatment device ( 22 ) can be fed. Arrangement according to one of the preceding claims, in which the second process fluid treatment device ( 22 ) and the second process fluid purification device ( 21 ) form a second combined process fluid purification and conditioning device housed in a second housing. Arrangement according to one of the preceding claims, in which the second process fluid treatment device ( 22 ) and the second process fluid purification device ( 21 ) have a common second control. Arrangement according to one of the preceding claims, wherein between the second printing unit ( 20 ) and the second process fluid purification device ( 21 ) no process fluid buffer memory (P) is provided for storing contaminated process fluid. Arrangement according to one of the preceding claims, wherein between the second process fluid cleaning device ( 21 ) and the second printing unit ( 20 ) no process fluid buffer (Z) is provided for storing purified process fluid. Arrangement according to one of the preceding claims, wherein also with regard to further, preferably all printing units of the printing press ( 1 ) the arrangement is designed according to the arrangement described in one of the preceding claims. Arrangement according to one of the preceding claims, wherein the arrangement is part of a dampening solution supply for a dampening unit of a printing unit ( 10 . 20 ) of a printing machine ( 1 ), wherein the process fluid is a dampening solution and wherein the described process fluid carrying parts are moistened parts. Printing machine ( 1 ) with an arrangement according to one of claims 1 to 17. Method comprising the steps of determining a first process fluid effluent (SA1) of contaminated process fluid to be purified, which is attached to a first printing unit ( 10 ) of a printing machine ( 1 ) during operation per unit time, determining a second process fluid effluent from contaminated process fluid to be purified, which is at a second printing unit ( 20 ) on the printing machine ( 1 ) during operation per unit time, providing an arrangement with a first process fluid cleaning device ( 11 ) at the first printing unit ( 10 ) of the printing machine ( 1 ), wherein the provided first process fluid cleaning device ( 11 ) is provided with a cleaning performance which is equal to or greater than the first process fluid outflow (SA1), providing an arrangement with a second process fluid purification device ( 21 ) on the second printing unit ( 20 ) of the printing machine ( 1 ), wherein the provided second process fluid purification device ( 21 ) is provided with a cleaning performance which is equal to or greater than the second process fluid outflow, the provision being made such that during ongoing operation of the printing press ( 1 ) the entire at the first printing unit ( 10 ) for the purification process fluid through the first process fluid cleaning device ( 11 ) conductive and in the cleaned state the first process fluid circuit can be fed again and wherein the provision is made such that during operation of the printing machine ( 1 ) the whole at the second printing unit ( 20 ) for the purification process fluid through the second process fluid cleaning device ( 21 ) and in the purified state the second process fluid circuit can be fed again.