DE102019117084A1 - Cleaning system and cleaning process, in particular for treatment systems in painting technology - Google Patents

Abstract

The invention relates to a method for cleaning a treatment system (100) with at least one sub-area (102, 104, 106) in which fluid for treating components is stored and / or components are treated with the fluid, the at least one sub-area (102, 104, 106) is subjected to a cleaning sequence in the state emptied of the fluid and is exposed to the fluid after the cleaning sequence. The invention further relates to a cleaning system for a treatment system and a treatment system.

Description

State of the art

The invention relates to a cleaning system and cleaning method, in particular for treatment systems in painting technology.

In painting technology, the usual pre-treatment and dip painting systems are designed and built in such a way that a system that is technically easy to maintain and delivers the required product quality is implemented with the lowest possible investment costs.

In the systems, radiation (e.g. UV lamps), ultrasound, electrical impulses and various chemical disinfectants (e.g. oxidative, systemic, etc.) are primarily used to combat bacteria.

Disclosure of the invention

One object of the invention is to improve a method for cleaning treatment plants.

Another object is to create a cleaning system for carrying out the method.

Another task is to create a treatment facility that can be cleaned reliably.

The tasks are achieved by the features of the independent claims. Favorable configurations and advantages of the invention emerge from the further claims, the description and the drawing.

According to one aspect of the invention, the invention relates to a method for cleaning a treatment system with at least one sub-area in which fluid for treating components is stored and / or components are treated with the fluid, the at least one sub-area being emptied of the fluid State is subjected to a cleaning sequence and is acted upon with the fluid after the cleaning sequence.

The result is a cleaning process in which environmentally friendly and degradable substances can be used as far as possible, which are well compatible with the environmentally friendly cleaning and coating chemicals and dipping paints now used in pretreatment and dipping systems. Although the cleaning and coating chemicals and dipping paints used are susceptible to microbiological pollution, undesired microbiological pollution of the system can be avoided. A contamination of the systems can be prevented.

In known systems and processes, large amounts of bacteriostatic and / or bactericidal agents often have to be used in order to bring the bacteriological situation in the systems under control or to keep it within tolerable limits.

With the method according to the invention, especially in large systems in painting technology, in which a high throughput is necessary for series production with few interruptions, in spite of the lack of bactericidal effect of the known cleaning chemicals and immersion paints, bacteriostatic and / or bactericidal agents can be used largely or even entirely be waived. In this way, a build-up of resistance in the bacteria due to improper use can be avoided, which in turn is advantageous for the process and thus the product quality. Unwanted consequences for the environment and people are also avoided, not to mention the effort involved in combating them. The cleaning sequence can be carried out within a few hours and, if necessary, combined with maintenance work. Depending on the requirement, the cleaning sequence can be carried out, for example, weekly or bi-weekly or as required.

The method can be advantageous in the area of coating components, in particular the general pretreatment of metallic parts such as screws, sheet metal, molded parts and the like, in the field of electroplating, powder coating, anodizing systems, aluminum painting, plastic painting and automotive painting systems, in which water desalination systems may be used Are used, and where metal and plastic parts are pretreated and then coated. In such an environment, dipping baths, spray tunnels and the like are used for a large number of components over a long period of time.

The method can be used particularly favorably for cleaning water treatment devices as well as water tanks and pretreatment systems in painting technology.

Other favorable application possibilities can be found in the area of dip painting and the connected anolyte system.

The treatment system can advantageously be designed so that the partial systems and / or the entire system can be cleaned well.

The cleaning sequence can be automated and thus guarantee reproducible cleaning and disinfection of the sub-areas. A needs-based cleaning and disinfection is possible with the extensive exclusion of the “human factor” in the cleaning and disinfection result, while maintaining the process and thus product quality in the pretreatment and dip painting plant. Partly manual operation is optionally possible.

Saving of energy and cleaning chemicals and thus of costs in the context of plant cleaning and wastewater treatment is possible, while at the same time protecting the environment and protecting the limited disinfectant pool available on the market, such as those listed in the so-called European REACH regulation.

According to a favorable embodiment of the method, the cleaning sequence can be repeated after a predetermined period of use of the at least one partial area. In this way, it is possible, in particular, to limit bacterial infestation in the treatment system.

According to a favorable embodiment of the method, the cleaning sequence can comprise the following steps. The at least one partial area can first be rinsed with a rinsing liquid. Water can be used as the rinsing liquid. Fresh water or a cleaning liquid from the last wash cycle of the previous cleaning sequence can be used for this purpose. The at least one partial area can then be cleaned with lye. Sodium hydroxide NaOH can be used as the base. This can be followed by rinsing the at least one partial area with a rinsing liquid. The at least one partial area can then be cleaned with acid, in particular in order to neutralize alkali residues. Nitric acid HNO ₃ , phosphoric acid H ₃ PO ₄ , sulfuric acid H ₂ SO _{4 are} well suited as the acid. This can then be followed by rinsing the at least one partial area with a rinsing liquid, in particular water. The at least one partial area can then be disinfected with at least one disinfectant. A mixture of disinfectants can optionally be used. After the cleaning sequence, the at least one partial area or the treatment system can be put into the normal operating state.

During the cleaning sequence, various parameters such as acid concentration, alkali concentration, pressure, temperature, flow in the flow and / or return of a corresponding cleaning system can be monitored, which supplies the at least one sub-area with the media used during the cleaning sequence.

According to a favorable embodiment of the method, the cleaning sequence can be carried out individually for each of the partial areas in a treatment system with several partial areas. In particular, pipeline connections between a cleaning system and the partial areas of the treatment system can be selectively activated or deactivated. A cleaning sequence can advantageously be carried out for each sub-area and, after its completion, the cleaning sequence for the next sub-area can be carried out.

According to a favorable embodiment of the method, the cleaning sequence can be carried out in a manually controlled manner. In particular, pipeline connections between a cleaning system and at least partial areas of the treatment system can be selectively activated or deactivated in a manually controlled manner. A switchover of the media flows between individual sub-areas in the cleaning sequence can take place on a distributor panel by means of pipe bends designed so that they cannot be confused.

According to a favorable embodiment of the method, the cleaning sequence can be carried out in an automatically controlled manner. In particular, a selective activation or deactivation of pipeline connections between a cleaning system and the partial areas of the treatment system can take place in an automatically controlled manner. This allows a high degree of reproducibility of the cleaning sequence.

According to a favorable embodiment of the method, an alkali concentration can be recorded before or during the cleaning sequence and adjusted if necessary. An acid concentration can also be recorded before or during the cleaning sequence and adjusted if necessary. Furthermore, a content of bacteria can be recorded before or during the cleaning sequence and, if necessary, a content of disinfectant can be set. Furthermore, the disinfection step can be repeated and / or changed to a different disinfectant.

According to a favorable embodiment of the method, at least part of the rinsing liquid and / or the acid and / or the lye can be reused for the next cleaning sequence. This allows material savings and a cost-effective procedure, especially with larger treatment plants.

According to a favorable embodiment of the method, a cleaning system can only be connected to the treatment system to carry out the cleaning sequence. The cleaning system can advantageously also be connected to existing systems.

According to a further aspect of the invention, a cleaning system for performing the method according to the invention is proposed. The cleaning system comprises a conveying device for media used in a cleaning sequence, in particular lye, acid, water, disinfectant, as well as a connection device for a flow and a connection device for a return.

The cleaning system can advantageously be connected to a treatment system via the connection device, if necessary. A separate media circuit can advantageously be provided for each sub-area of the treatment system to be cleaned. It is advantageous to switch between the media circuits manually or automatically.

According to a favorable embodiment of the cleaning system, a metering device can be provided for metering in media used in the cleaning sequence, in particular lye, acid, water, disinfectant. The concentration of the media can be adjusted flexibly and as required. A heat exchanger can optionally be provided in order to temperature control media for the cleaning sequence if necessary.

According to a favorable embodiment of the cleaning system, at least one sensor device can be provided for monitoring media used in the cleaning sequence, in particular alkali, acid, water, disinfectant. Such a quality control can ensure a high quality of the cleaning sequence. In addition, the monitoring enables cost-saving reuse of the media, which only need to be replaced if the quality falls below a required minimum.

According to a favorable embodiment of the cleaning system, at least one container can be provided to store media used in the cleaning sequence, in particular lye, acid, water, disinfectant. The container can serve as a compensation vessel during the cleaning sequence and / or as a storage container after the cleaning sequence has been completed and can hold a medium from the cleaning sequence.

According to a favorable embodiment of the cleaning system, the delivery device can comprise a controllable pump. The regulated pump can be operated with frequency control. The delivery rate of the pump can be adapted to the different cleaning requirements of the sub-areas of the treatment system.

According to a further aspect of the invention, a distribution device for carrying out a method according to the invention is proposed, a distribution panel with a plurality of connections being provided, with which various pipeline routes can be switched manually at least to partial areas of a treatment system to be cleaned with the method. As an alternative or in addition, one or more valve devices are provided with which different pipeline routes can be automatically switched at least to partial areas of a treatment system to be cleaned with the method.

Advantageously, at least one flow to and one return from the sub-areas to a cleaning system can be switched. A separate media circuit can advantageously be provided for each sub-area of the treatment system to be cleaned.

According to a further aspect of the invention, a treatment system with at least one sub-area for performing the method according to the invention is proposed, at least one coupling point being provided to which a cleaning system according to the invention can be connected at least temporarily for cleaning the at least one sub-area. A separate media circuit between the cleaning system and the respective sub-area can advantageously be provided for each sub-area of the treatment system to be cleaned.

The treatment system can advantageously be designed so that the partial areas and / or the entire system can be cleaned well. At least some sub-areas of the treatment system can favorably be constructed according to the criteria of the EHEDG (European Hygienic Engineering and Design Group).

In particular, a water treatment system (VEW system) can be designed to be cleanable.

In process tanks, instead of permanently installed ladders for access, which have many dead spaces, removable elements and / or hygienic manholes can be provided for easy and safe access from the outside.

Silhouette sheets, which usually have horizontal edges and are welded tightly to the tunnel wall, can be equipped with beveled edges and / or have drip tabs. The silhouette plates can advantageously be mounted at a distance from the wall.

Splash rings, which are usually held with horizontal metal sheets and form dead spaces, can be provided with round holders and mounted on the wall with the holders without dead spaces.

Conventional nozzle assemblies are combined to form spray rings with quick couplings that are difficult to clean in order to enable a large-area spray jet. These can be combined into splash rings using easy-to-clean, hygienic screw connections.

Sensors such as pressure and level sensors can advantageously be attached to the containers and pipelines without dead space by means of hygienic connections.

To monitor the bacterial status of process zones of the treatment plant, sampling devices can be provided on the basins and biosensors in wet areas such as wet tunnels.

Partial areas of the treatment system can be provided with spray balls or cleaning machines that achieve an automated and, as a result, repeatable cleaning and disinfection performance of the system and can be supplied by a central cleaning system according to the invention (CIP system (CIP = Cleaning In Place)).

According to a favorable embodiment of the treatment system, a water treatment device and / or a water tank and / or a pretreatment basin and / or an immersion bath and / or a spray tunnel can be provided as at least one sub-area, which are at least temporarily connected to the cleaning system according to the invention and from this with cleaning media can be supplied in a cleaning sequence.

For example, fully demineralized water (hereinafter also referred to as VEW) is usually added to fill the pool near or below the liquid level by means of non-self-draining pipes. This can lead to a re-contamination of the VEW system. The VEW system contains stub lines that are only insufficiently flushed. The VEW system is made up of components that do not meet any hygienic requirements.

In contrast, the treatment system, in particular the VEW system, can advantageously be designed according to hygienic standards. The sub-area of the entire VEW system can advantageously be constructed according to criteria which have low surface roughness and no dead spaces and which allow cleaning. The VEW system can be routed directly past the dosing points in the system and the fully demineralized water can be added to the process tank using dead space-free or self-draining branch lines above the liquid surface. In addition, the VEW system can be equipped with biosensors in order to continuously monitor the bacteriological status. After the last dosing point for fully demineralized water, a return line can be returned to the VEW tank.

According to a favorable embodiment of the treatment system, the at least one sub-area can be designed with little dead space and / or be designed so that it drips off and / or have smooth surfaces.

Usual doors and windows of tunnels of the treatment plant contain dead spaces that exclude easy cleaning. These can be replaced by stainless steel flaps with little dead space.

Conventional sheets with surface qualities of 1D according to EN 10088-2 or worse (Ra 3.50-5.50 µm) can advantageously be replaced by stainless steel sheets with a surface quality corresponding to 2B according to EN 10088-2 (Ra 0.3-0.5 µm).

Instead of the usual coarsely ground weld seams, weld seams of good quality can only be pickled or finely ground with at least 240 grain.

According to a favorable embodiment of the treatment system, accessible areas of the at least one partial area can be designed to be removable. Usual accessible areas in the wet tunnels are provided with built-in gratings and thus create dead spaces. The inspection of the tunnels of the pre-treatment and dip painting plant can advantageously be ensured through the use of temporarily insertable metal sheets.

Figure list

Further advantages emerge from the following description of the drawings. Exemplary embodiments of the invention are shown in the drawings. The drawings, the description and the claims contain numerous features in combination. The person skilled in the art will expediently also consider the features individually and combine them into useful further combinations.

• 1 eine Anordnung nach einem Ausführungsbeispiel der Erfindung, bei dem eine Reinigungsanlage über ein Verteilerpaneel an eine Behandlungsanlage angekoppelt ist, die mehrere Teilbereiche aufweist;
• 2 die Anordnung nach 1, wobei ein erster Kreislauf für einen Medienfluss von der Reinigungsanlage zu einer Wasseraufbereitungsanlage und zurück zur Reinigungsanlage manuell über das Verteilerpaneel geschaltet ist;
• 3 die Anordnung nach 1, wobei ein zweiter Kreislauf für einen Medienfluss von der Reinigungsanlage zu einem Wassertank einer Wasseraufbereitungsanlage und zurück zur Reinigungsanlage manuell über das Verteilerpaneel geschaltet ist;
• 4 die Anordnung nach 1, wobei ein dritter Kreislauf für einen Medienfluss von der Reinigungsanlage zu einer Prozess-Teilbereich und zurück zur Reinigungsanlage manuell über das Verteilerpaneel geschaltet ist;
• 5 die Anordnung nach 1 im normalen Prozessbetrieb der Behandlungsanlage;
• 6 eine Anordnung nach einem Ausführungsbeispiel der Erfindung, bei dem eine automatisiert betreibbare Reinigungsanlage an eine Behandlungsanlage ankoppelbar ist, die mehrere Teilbereiche aufweist;
• 7 die Anordnung nach 6 mit einer detailliert ausgeführten Reinigungsanlage, die an die Behandlungsanlage angekoppelt ist und die eine automatisierte Schaltung separater Medienkreisläufe zwischen Reinigungsanlage und jeweiligem Teilbereich erlaubt;
• 8 die Anordnung nach 6, wobei ein erster Kreislauf für einen Medienfluss von der Reinigungsanlage zu einer Wasseraufbereitungsanlage und zurück zur Reinigungsanlage automatisiert geschaltet ist;
• 9 die Anordnung nach 6, wobei ein zweiter Kreislauf für einen Medienfluss von der Reinigungsanlage zu einem Wassertank einer Wasseraufbereitungsanlage und zurück zur Reinigungsanlage automatisiert geschaltet ist;
• 10 die Anordnung nach 6, wobei ein dritter Kreislauf für einen Medienfluss von der Reinigungsanlage zu einem Prozess-Teilbereich und zurück zur Reinigungsanlage automatisiert geschaltet ist;
• 11 eine Reinigungsanlage nach einem Ausführungsbeispiel der Erfindung für einen Einwegbetrieb der Medien;
• 12 eine Reinigungsanlage nach einem Ausführungsbeispiel der Erfindung für einen Betrieb mit Wiederverwendung der Medien;
• 13 schematisch ein Flussdiagramm eines Reinigungsverfahrens nach einem Ausführungsbeispiel der Erfindung.

It shows as an example:

• 1 an arrangement according to an embodiment of the invention, in which a cleaning system is coupled via a distributor panel to a treatment system which has several sub-areas;
• 2 the arrangement according to 1 , wherein a first circuit for a media flow from the cleaning system to a water treatment system and back to the cleaning system is switched manually via the distributor panel;
• 3 the arrangement according to 1 , wherein a second circuit for a media flow from the cleaning system to a water tank of a water treatment system and back to the cleaning system is switched manually via the distributor panel;
• 4th the arrangement according to 1 wherein a third circuit for a media flow from the cleaning system to a process sub-area and back to the cleaning system is switched manually via the distributor panel;
• 5 the arrangement according to 1 in normal process operation of the treatment plant;
• 6th an arrangement according to an embodiment of the invention, in which an automatically operated cleaning system can be coupled to a treatment system which has several sub-areas;
• 7th the arrangement according to 6th with a detailed cleaning system, which is coupled to the treatment system and which allows an automated switching of separate media circuits between the cleaning system and the respective sub-area;
• 8th the arrangement according to 6th , wherein a first circuit for a media flow from the cleaning system to a water treatment system and back to the cleaning system is switched automatically;
• 9 the arrangement according to 6th , wherein a second circuit for a media flow from the cleaning system to a water tank of a water treatment system and back to the cleaning system is switched automatically;
• 10 the arrangement according to 6th wherein a third circuit for a media flow from the cleaning system to a process sub-area and back to the cleaning system is switched automatically;
• 11 a cleaning system according to an embodiment of the invention for one-way operation of the media;
• 12 a cleaning system according to an embodiment of the invention for an operation with reuse of the media;
• 13th schematically a flow diagram of a cleaning method according to an embodiment of the invention.

Embodiments of the invention

Components of the same type or having the same effect are numbered with the same reference symbols in the figures. The figures show only examples and are not to be understood as restrictive.

Directional terminology used in the following with terms such as “left”, “right”, “up”, “down”, “in front of” “behind”, “after” and the like serves only for a better understanding of the figures and is in no way intended to restrict the Represent generality. The components and elements shown, their design and use can vary according to the considerations of a person skilled in the art and can be adapted to the respective applications.

The 1 to 5 illustrate an arrangement according to a first embodiment of the invention, in which a cleaning system 10 via a distribution panel 160 to a treatment facility 100 is coupled, the several areas to be cleaned 102 , 104 , 106 having. The cleaning system 10 is each with separate media circuits with each of the sub-areas 102 , 104 , 106 connectable. Switching between the media circuits is carried out manually using the distribution panel.

The treatment facility 100 is for example a painting facility, and the sub-areas 102 , 104 , 106 those areas that are in contact with water that has been treated on the system side. Section 102 is for example a water treatment system, such as a reverse osmosis system (RO system), sub-area 104 a connected water tank for treated water (VEW) and part of it 106 a process sub-area.

1 shows the arrangement as such. 2 shows the arrangement 1 , with a first circuit for a media flow from the cleaning system 10 to a water treatment plant 102 and back to the cleaning system 10 manually via the distribution panel 160 is switched. 3 shows the arrangement 1 , with a second circuit for a media flow from the cleaning system 10 to a water tank 104 the water treatment plant 102 and back to the cleaning system 10 manually via the distribution panel 160 is switched. 4th shows the arrangement 1 , with a third circuit for a media flow from the cleaning system 10 to a process Section 106 and back to the cleaning system 10 manually via the distribution panel 160 is switched. 5 shows the arrangement 1 in normal process operation of the treatment plant 100 .

The treatment device 100 is with a central water supply 110 connected. Between the water tank 104 and the process sub-area 106 is a funding module 112 arranged. The process sub-area 106 preferably comprises a pretreatment device as well as an immersion tank for cathodic dip paint treatment, in the process sub-area 106 a demineralized water circuit circulates from the water tank 104 is fed.

The distribution panel 160 forms a coupling point 200 between the cleaning system 10 and the treatment facility 100 and their sub-areas 102 , 104 , 106 ,

The connections 170 and 172 are with the cleaning system 10 connected, with connection 170 via a lead with the exit 20th and connection 172 via a return to the input 30th the cleaning system 10 connected is.
The connections 161 and 168 are short-circuited and connected to the sub-area 102 connected. The sub-area 102 is also with the connection 166 connected. The sub-area 104 is with the connector 162 and with the connector 164 connected. The sub-area 106 is with the connector 167 and via the pump module 112 with the connector 163 connected.

The central water supply 110 is with the connector 165 connected.

The cleaning system 10 supplies the sub-areas 102 , 104 , 106 each with water, lye, acid, disinfectant, the sub-areas 102 , 104 , 106 cleaned one after the other and then go into normal process operation.

First, a media circuit is established by installing a corresponding number of round arches that selectively connect some of the connections 161-172 connect with each other.
The cleaning system 10 gives a rinsing liquid, for example water, into the media circuit via the flow. Then the cleaning system gives 10 Lye as cleaning medium in the media circuit. The cleaning system 10 then returns the rinsing liquid to the media circuit. Then the cleaning system gives 10 Acid into the media circuit, and then again rinsing liquid. Finally there is the cleaning system 10 a disinfectant in the media circuit.

The preparation of the media and the switching between the media takes place in the cleaning system 10 , for which a control computer (not shown) can be available. The media in terms of flow rate, concentration, pressure, temperature and the like in the cleaning system can also be monitored 10 respectively.

With the first media cycle ( 2 ) becomes the sub-area 102 cleaned, with the media successively from the output 20th over the flow to the connection 170 get that with the connector 166 connected, from there via the connector 166 to the sub-area 102 , from there to the connections 161 , 168 that with the connector 172 connected and from there via the connector 172 in the return to the entrance 30th the cleaning system 10 reach. The media flow is symbolized by broken arrow lines.

With the second media cycle ( 3 ) becomes the sub-area 104 cleaned, with the media successively from the output 20th over the flow to the connection 170 get that now with the connector 164 connected, from there via the connector 164 to the sub-area 104 , from there to the connector 162 that with the connector 172 connected and from there via the connector 172 in the return to the entrance 30th the cleaning system 10 reach. The media flow is symbolized by broken arrow lines.

With the third media cycle ( 4th ) becomes the sub-area 106 cleaned, with the media successively from the output 20th over the flow to the connection 170 get that now with the connector 163 connected, from there via the connector 163 via the conveyor module 112 to the sub-area 106 and from there to the connector 167 that with the connector 172 connected and from there via the connector 172 in the return to the entrance 30th the cleaning system 10 reach. The media flow is symbolized by broken arrow lines.

5 shows the treatment facility 100 in normal operation, with water from the central water supply via the connection 165 that is supplied to the connector 166 connected through the port 166 for processing in the partial area 102 , from there to the connection 161 , the one with connection 162 and this one with connection 163 connected via the pump module 112 to the process sub-area 106 got.

The connections 170 , 172 to the cleaning system 10 remain open in the normal operating state of the treatment system.

The 6th to 10 show a further arrangement according to an exemplary embodiment of the invention, in which the switching of the media circuits takes place in an automated manner.

The treatment facility 100 corresponds with its sub-areas 102 , 104 , 106 largely the treatment plant 100 in the exemplary embodiment described above, to which reference is made to avoid unnecessary repetition. It is in a connecting line between the sub-area 104 and the cleaning system 10 another funding module 114 intended. Furthermore, switching between the media circuits no longer takes place with an external distributor panel, but is automated within the cleaning system 10 . Furthermore, there are a number of controllable valves 26, 36 in the lines of the treatment system 100 provided which subsections according to the exposure to media of a current media cycle between the cleaning system 10 and one of the sub-areas 102 , 104 , 106 close or release.

6th shows the treatment facility 100 during a treatment process in normal operation in which the cleaning system 10 from the treatment facility 100 is decoupled. In normal operation, fresh water comes from a central water supply 110 in the treatment facility 100 .

The cleaning system 10 can be operated automatically and at a coupling point 200 with their exit 20th and entrance 30th to the treatment facility 100 can be coupled to carry out the cleaning method according to the invention.

7th shows the arrangement 6th with a detailed cleaning system 10 attached to the treatment facility 100 is coupled and an automated switching of separate media circuits between the cleaning system 10 and the respective sub-area 102 , 104 , 106 allowed. The cleaning system 10 is in 11 shown and described in detail. The cleaning system 10 is designed as a “single-use system” in which the media are only used once in the cleaning sequence and then discarded. This is for smaller treatment facilities 100 or if there is little space for the cleaning system 10 Cheap.

The cleaning system 10 points at their exit 20th a separate lead for each media cycle 21st , 22nd , 23 on and at the entrance 30th its own return 31 , 32 , 33 . Each media circuit therefore has its own pipe system.

8th shows the arrangement 6th , with a first circuit for a media flow from the outlet 20th the cleaning system 10 about their advance 21st to a water treatment plant as a part 102 the treatment plant 100 leads. From there, the respective medium, ie rinsing liquid, lye, acid, disinfectant, reaches the return line 31 back to the entrance 30th the cleaning system 200 . The media flow is symbolized by broken arrow lines.

9 shows the arrangement 6th , with a second circuit for a media flow from the outlet 20th the cleaning system 10 about their advance 22nd the cleaning system 10 to a water tank as a part 104 the treatment plant 100 leads. From there, the respective medium, ie rinsing liquid, lye, acid, disinfectant, reaches the return line 32 back to the entrance 30th the cleaning system 200 . The media flow is symbolized by broken arrow lines.

10 shows the arrangement 6th , with a third circuit for media flow from the outlet 20th the cleaning system 10 about their advance 23 the cleaning system 10 to a process sub-area as a sub-area 106 the treatment plant 100 leads. From there, the respective medium, ie rinsing liquid, lye, acid, disinfectant, reaches the return line 33 back to the entrance 30th the cleaning system 200 . The media flow is symbolized by broken arrow lines.

11 shows a cleaning system 10 according to an embodiment of the invention for a one-way operation of the media, as shown in the previous embodiment 6th to 10 is used.

The execution of the cleaning system 10 is designed for operation with freshly prepared cleaning and disinfecting solutions. It includes a tank 34 , which serves as an expansion tank when the respective media circuit is closed.

At the exit 20th is a sensor device 64 arranged with several sensors for monitoring the media that enter the media circuit. At the entrance 30th is a sensor device 66 provided, which monitors the returned media. exit 20th and entrance 30th provide the coupling point of the cleaning system 10 with the treatment plant 100 represent.

The sensor device on the output side 64 is upstream of a heat exchanger 48 arranged, via interfaces 13th , 14th a heat transfer medium, for example heated water, is supplied and removed. With the heat exchanger 48 the respective medium can be brought to a temperature favorable for the cleaning sequence.

Downstream of the sensor device 64 is a funding agency 60 , preferably a controllable pump, arranged. This can adjust its delivery rate depending on the media circuit to be supplied. Upstream of the conveyor and downstream of the tank 34 is a dosing device 62 arranged. There you can use interfaces 17th , 18th , 19th Cleaning media such as lye through the interface 17th , Acid across the interface 18th and disinfectants via the interface 19th be added.

The media are mixed with water that passes through the interface 15th into a line 70 is supplied, brought to a desired concentration. Via another interface 12 can add additional disinfectant to the line of the interface 19th are fed.

The concentrated media coming through the dosing point 62 can be added in modules 17th for lye, 18 for acid and 19 for disinfectant in appropriate storage containers 52 for alkali, 54 for acid and 56 for disinfectant in separate modules 51 , 53 , 55 be stored. If necessary, the respective interfaces 17th , 18th , 19th connected to each other and the media metered in as required.

The exit 20th can be blocked or opened with an adjustable valve 26. Accordingly, the entrance 30th be closed with an adjustable valve 38.

The respective medium can be in the tank 34 collected and via a disposal connection 72 be disposed of. You can do this with a 34 connected valve node 36 can be switched accordingly with several valves.

In a first switching position of the valve node 36 can tap the water 70 to the dosing device 62 and the funding 60 reach. In a second switching position of the valve node, medium can be drawn from the tank serving as an equalizing vessel 34 back into the media cycle for funding 60 flow. In another switch position of the valve node 36 can take the medium from the tank to the disposal connection 72 and out of the cleaning system 10 be derived.

Additional valves, sensors and filters can be provided to control the cleaning system. Furthermore, a control computer (not shown) is provided, which controls or regulates the sensors for monitoring the media as well as the valves and conveying means.

12 shows a cleaning system according to a further exemplary embodiment of the invention for operation with reuse of the media that are used in the cleaning sequence. This is beneficial for large systems that require large volumes of cleaning media.

The cleaning system largely corresponds to that from the previous exemplary embodiment.

The execution of the cleaning system 10 however, it is designed to operate with reusable cleaning and disinfecting solutions. It contains several tanks 40 , 42 , 44 , 46 , which serve as an expansion tank when the respective media circuit is closed and as a storage tank after the cleaning sequence.

In the tank 40 water is stored for pre-rinsing before adding lye. This water can, for example, be the rinsing medium from the last rinse cycle of the previous cleaning sequence.

In the tank 42 contains reusable lye. The Tank 44 is intended for acid, the tank 46 is intended for fresh water as the rinsing medium for the last rinse.

The tanks 40 , 42 , 44 , 46 are upstream of the metering device 62 arranged.

At the exit 20th is a sensor device 64 arranged with several sensors for monitoring the media that enter the media circuit. At the entrance 30th is a sensor device 66 provided, which monitors the returned media. exit 20th and entrance 30th provide the coupling point of the cleaning system 10 with the treatment plant 100 represent.

The sensor device on the output side 64 is upstream of a heat exchanger 48 arranged, via interfaces 13th , 14th a heat transfer medium, for example heated water, is supplied and removed. With the heat exchanger 48 the respective medium can be brought to a temperature favorable for the cleaning sequence.

Downstream of the sensor device 64 is a funding agency 60 , preferably a controllable pump, arranged. This can adjust its delivery rate depending on the media circuit to be supplied. Upstream of the conveyor and downstream of the tank 34 is a dosing device 62 arranged. There you can use interfaces 17th , 18th , 19th Cleaning media such as lye through the interface 17th , Acid across the interface 18th and disinfectants via the interface 19th be added. The disinfectant is not stored here, but used freshly prepared for each cleaning sequence.

The respective medium in the tanks 40 , 42 , 44 , 46 can after consumption via a disposal connection 72 be disposed of.

The media are mixed with water that passes through the interface 15th into a line 70 is supplied, brought to a desired concentration.

The concentrated media coming through the dosing point 62 can be added in modules 17th for lye, 18 for acid and 19 for disinfectant in appropriate storage containers 52 for alkali, 54 for acid and 56 for disinfectant in separate modules 51 , 53 , 55 be stored. If necessary, the respective interfaces 17th , 18th , 19th connected to each other and the media metered in as required.

The exit 20th can be blocked or opened with an adjustable valve 26. Accordingly, the entrance 30th be closed with an adjustable valve 38.

Additional valves, sensors and filters can be provided to control the cleaning system. Furthermore, a control computer (not shown) is provided, which controls or regulates the sensors for monitoring the media as well as the valves and conveying means.

13th shows schematically a flow chart of a cleaning method according to an embodiment of the invention. As an example, three sub-areas of a treatment system are subjected to a cleaning sequence in succession.

The method provides that at least a partial area of a treatment system is subjected to a cleaning sequence. After the cleaning sequence, the normal fluid for the treatment process can be applied to the sub-area and the next cleaning sequence can be carried out in another sub-area.

A first media cycle is switched and in step S10 the sub-area rinsed with a rinsing liquid. In step S12 the area is cleaned with lye. In step S14 the sub-area is rinsed with rinsing liquid. In step S16 the area is cleaned with acid and lye residues are neutralized. In step S18 the sub-area is rinsed with rinsing liquid. In step S20 the area is disinfected with a disinfectant.

After the cleaning sequence, the sub-area is ready for use.

The steps S10-S20 are repeated in the next sub-area when the second media circuit is activated. Then the third media circuit is switched for the third sub-area and the steps S10-S20 there repeated.

Fewer or more partial areas can be cleaned with the cleaning sequence.

10

Cleaning system

12th

interface

13

interface

14th

interface

15th

interface

16

interface

17th

interface

18th

interface

19th

interface

20th

leader

21st

management

22nd

management

23

management

28 30

Rewind

31

management

32

management

33

management

34

Compensation tank

36

Valve node

40

Water tank

42

Lye tank

44

Acid tank

46

Water tank

48

Heat exchanger

51

Lye module

52

container

53

Acid module

55

Disinfection module

56

container

60

Conveyor

62

Dosing device

64

Sensor device

66

Sensor device

70

Water supply

72

Disposal connection

100

Treatment facility

102

Water treatment plant

104

Water tank

106

Coating system

110

Water inlet filter

112

Delivery module

114

Delivery module

160

Distribution panel

161

connection

162

connection

163

connection

164

container

165

connection

166

connection

167

connection

168

connection

170

connection

172

connection

200

Coupling point

S10

Rinsing step

S12

Lye treatment step

S14

Rinsing step

S16

Acid treatment step

S18

Rinsing step

S20

Disinfection step

Claims (19)

Method for cleaning a treatment system (100) with at least one sub-area (102, 104, 106) in which fluid for treating components is stored and / or components are treated with the fluid, the at least one sub-area (102, 104 , 106) is subjected to a cleaning sequence in the state in which the fluid has been emptied and, after the cleaning sequence, the fluid is applied. Procedure according to Claim 1 , the cleaning sequence being repeated after a predetermined period of use of the at least one partial area (102, 104, 106). Procedure according to Claim 1 or 2 , wherein the cleaning sequence comprises the following steps (i) rinsing the at least one sub-area (102, 104, 106) with a rinsing liquid; (ii) cleaning the at least one sub-area (102, 104, 106) with lye; (iii) rinsing the at least one sub-region (102, 104, 106) with a rinsing liquid; (iv) cleaning the at least a portion (102, 104, 106) with acid; (v) rinsing the at least one partial area (102, 104, 106) with a rinsing liquid; (vi) disinfecting the at least one sub-area (102, 104, 106) with at least one disinfectant. Method according to one of the preceding claims, wherein the cleaning sequence in a treatment system (100) with several sub-areas (102, 104, 106) is carried out individually for each of the sub-areas (102, 104, 106), in particular with pipeline connections between a cleaning system (10 ) and at least partial areas (102, 104, 106) of the treatment system (100) can be selectively activated or deactivated. Method according to one of the preceding claims, wherein the cleaning sequence is carried out manually controlled, in particular wherein a selective activation or disconnection of pipeline connections between a cleaning system (10) and the sub-areas (102, 104, 106) of the treatment system (100) takes place manually controlled. Method according to one of the Claims 1 to 4th , wherein the cleaning sequence is carried out in an automatically controlled manner, in particular wherein a selective activation or disconnection of pipeline connections between a cleaning system (10) and at least partial areas (102, 104, 106) of the treatment system (100) is automatically controlled. Method according to one of the preceding claims, wherein before or during the cleaning sequence an alkali concentration is detected and adjusted if necessary; and / or an acid concentration being detected before or during the cleaning sequence and adjusted if necessary; and / or wherein a content of bacteria is detected before or during the cleaning sequence and, if necessary, a content of disinfectant is set. Method according to one of the preceding claims, wherein at least part of the rinsing liquid and / or the acid and / or the base is used several times for a next cleaning sequence. Method according to one of the preceding claims, wherein a cleaning system (10) is connected to the treatment system (100) only to carry out the cleaning sequence. Cleaning system (10) for performing the method according to one of the preceding claims, comprising a conveying device (60) for media used in a cleaning sequence, in particular lye, acid, water, Disinfectants, as well as a connection device (20) for a flow and a connection device (30) for a return, in particular which can each be connected to a treatment system (100) as required. Cleaning system after Claim 10 , wherein a metering device (62) for metering in agents used in the cleaning sequence, in particular lye, acid, water, disinfectant, is provided. Cleaning system after Claim 10 or 11 , at least one sensor device (64, 66, 68) being provided for monitoring media used in the cleaning sequence, in particular lye, acid, water, disinfectant. Cleaning system after one of the Claims 10 to 12 , at least one container (40, 42, 44, 46) being provided for storing media used in the cleaning sequence, in particular alkali, acid, water, disinfectant. Cleaning system after one of the Claims 10 to 13th wherein the delivery device (60) comprises a controllable pump. Distribution device for performing a method according to one of the Claims 1 to 9 , wherein a distributor panel (160) with a plurality of connections (161, 162, 163, 164, 165, 166, 167, 168, 170, 172) is provided, with which different pipeline routes at least to partial areas (102, 104, 106) a treatment plant (100) to be cleaned with the method can be switched manually or one or more valve devices (26, 36) are provided with which various pipeline paths at least to partial areas (102, 104, 106) of a treatment plant (100) to be cleaned with the method ) can be switched automatically. Treatment system (100) with at least one partial area (102, 104, 106) for carrying out the method according to one of the Claims 1 to 9 , at least one coupling point (200) being provided to which a cleaning system (10) according to one of the Claims 10 to 13th can be temporarily connected for cleaning the at least one sub-area (102, 104, 106). Treatment facility after Claim 16 , whereby as at least one sub-area (102, 104, 106) a water treatment device (102) and / or a water tank (104) and / or a pretreatment basin (106) and / or an immersion bath (106) and / or a spray tunnel (106) is provided. Treatment facility after Claim 16 or 17th , wherein the at least one partial area (102, 104, 106) is designed with little dead space and / or is designed so that it drips off and / or has smooth surfaces. Treatment plant according to one of the Claims 16 to 18th , wherein accessible areas of the at least one partial area (102, 104, 106) are designed to be removable.

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