DE102020109042A1 - Painting gas supply system, system for painting and method for operating a system for painting - Google Patents

Abstract

The invention relates to a painting gas feed system (101) comprising a distributor (102), the distributor (102) comprising a connector (103) and a plug unit (104), the connector (103) having a first neck (105), a second neck (106) and a third neck (107), wherein the plug unit (104) comprises a head (108) with which the plug unit (104) is connected to a free end (105a) of the first neck (105). Here, the connector unit (104) and the connector (103) are connected in such a way that an interior (109) of the connector (103) is closed in such a way and that the interior (103) through the head (108) of the connector (104) is closed in such a way is sealed so that a compressed gas (DG) can flow through it at a pressure of up to 20 bar, here the plug unit (104) comprises a heating probe (110) and here the free end (106a) of the second neck (106) is a hose connection (111) formed.

Description

The invention relates to a painting air supply line system, an installation for painting and a method for operating an installation for painting.

It is known from the prior art that an improvement in the result can also be brought about for painting processes, in particular for solvent-based painting processes and also paints that react on a water basis, e.g. harden, if compressed air enriched with moisture is used for the painting process. In particular, the use of moisture-enriched, especially saturated, compressed air at a relative humidity of e.g. over 40% can lead to a considerable improvement in the painting properties and the painting result.

The disadvantage of using known paint air supply systems is that, as a rule, liquid separators in the compressed air or compressed gas stream remove a considerable proportion of the liquid portion of the compressed gas that is relevant for the painting process in order to avoid undesirable accumulations of liquid. With the as yet unpublished German patent application 10 2018 129 038.1 an improvement of known painting air supply systems has already been proposed in order to avoid corresponding undesired accumulations of liquids in the compressed gas flow. Further practical experience has shown that, in certain cases, condensate has formed more and more after breaks in operation, and that this accumulates in particular near the spray gun. In such cases, the spray gun also releases the unwanted liquid when a painting process is started. One then speaks of the spray gun spitting, which severely impairs the quality of a paint layer to be produced.

In principle, the problems described occur to a lesser extent, but still relevant, when other compressed gases are used than painting gases.

In this respect, the invention has set itself the task of proposing a painting air supply line system, a painting installation and a method for operating a painting installation, by means of which practical suitability is further improved with regard to an optimal painting result.

This task is based on the features of the preamble of claim 1 or 17 or 20 or 23 or 25 or 30 or 32 by the characterizing features of claim 1 or 17 or 20 or 23 or 25 or 30 or 32 solved. Advantageous and expedient developments are specified in the respective subclaims.

• - wobei das Anschlussstück einen ersten Hals, einen zweiten Hals und einen dritten Hals umfasst,
• - wobei die Steckereinheit einen Kopf umfasst, mit welchem die Steckereinheit mit einem freien Ende des ersten Halses insbesondere lösbar verbunden ist,
• - wobei die Steckereinheit und das Anschlussstück derart verbunden und hierbei insbesondere einteilig ausgeführt sind, dass ein Innenraum des Anschlussstücks derart verschlossen ist und dass der Innenraum durch den Kopf der Steckereinheit derart abgedichtet ist, dass diesen ein Druckgas mit einem Druck von bis zu 20 bar durchströmen kann,
• - wobei die Steckereinheit eine Heizsonde umfasst und
• - wobei das freie Ende des zweiten Halses als Schlauchanschluss ausgebildet ist.

The painting gas supply system according to the invention comprises a distributor, the distributor comprising a connection piece and a plug unit,

• - wherein the connector comprises a first neck, a second neck and a third neck,
• - wherein the plug unit comprises a head with which the plug unit is connected to a free end of the first neck, in particular releasably,
• - wherein the plug unit and the connector are connected and in particular made in one piece in such a way that an interior of the connector is closed in such a way and that the interior is sealed by the head of the connector unit in such a way that a compressed gas with a pressure of up to 20 bar flows through it can,
• - wherein the connector unit comprises a heating probe and
• - The free end of the second neck is designed as a hose connection.

Such a painting gas supply system can be easily integrated into a new system or retrofitted to an existing system, so that the formation of condensation water in front of a spray gun can be avoided by the heating probe, since the heating probe enables the compressed gas to absorb moisture can be kept constant or increased.

It is also provided that the painting gas supply system comprises a first pressure hose, which is designed as a conductive pressure hose, in particular made of rubber, a non-return valve built into the first pressure hose or connected to the first pressure hose, and a pressure switch, the pressure switch having one in the first Pressure hose detected existing gas pressure. The pressure switch can be used to switch off the heating probe and any ionization device that may be present when the pressure drops, in order to prevent an explosion or fire. If the pressure falls below a limit value of, for example, 0.5 bar, the painting gas feed system is also switched off. The non-return valve prevents any potentially explosive gas from the ambient air from flowing into the first pressure hose, so that explosion protection is implemented. In this way, the inflow of gas from the environment via the spray gun can be effectively prevented. In the event that the pressure switch controls the heating probe, which may be If the existing ionization device and the painting gas supply system or a supply of compressed air are switched off, the next step is manual flushing of the painting gas supply system with compressed gas or an inert flushing gas, such as N2, with the supplied compressed gas or the supplied inert flushing gas over the spray gun or a discharge valve flows off, the discharge valve being arranged in the area of the end of the first pressure hose or in the area of the spray gun. After the painting gas supply system has been flushed, a manual reset takes place by actuating a reset switch, which includes the painting gas supply system.

It is also provided that the painting gas supply line system additionally comprises a regulator for purging air. By means of the regulator for purging air, it is possible to automatically flush the painting gas supply line system with compressed gas after a pressure drop. If a regulator for purging air is installed, it is provided that the purging takes place automatically, with the regulator supplying and controlling compressed air again after switching off the heating probe, the possibly existing ionization device and the painting gas supply system or a supply of compressed air this flows off via the spray gun or via a discharge valve. In this case, the regulator for scavenging air can continue to control that after scavenging the heating probe, the ionization device, if present, and the painting gas supply system or the supply of pressurized gas are reactivated. A reset is carried out accordingly by the controller for purge air.

It is also provided that the manual reset, e.g. by pressing a reset switch after purging, reactivates the heating probe, any ionization device and the painting gas supply system or the supply of pressurized gas.

It is also provided that the painting gas supply line system comprises a second pressure hose or a second pressure line and to design a free end of the third neck as a connection to which a pressure gas source can be connected directly or with the interposition of the second pressure hose or the second pressure line. In this way, the distributor can be integrated into different system configurations.

It is also provided that the heating probe is designed as a flexible element, wherein the heating probe is designed in particular as an electrical heating probe, preferably as a heating cable, or wherein the heating probe is designed in particular as a heating probe heated by a liquid, preferably as a heating hose, or wherein the heating probe is in particular designed as a heating probe Gas-heated gas heating probe, preferably designed as a heating line. This makes it possible to guide the heating probe far into the first pressure hose, which leads to the spray gun, so that the temperature in the first pressure hose can be regulated with the same effectiveness over any section of its length. Alternatively, it is also provided that the heating probe is guided along a pressure hose into a space surrounded by a jacket. Such heating probes can be operated by means of different energy sources, so that the distributor can simply be designed for the preferred energy source, so that energy sources available on site can be used without the energy form having to be converted.

The painting gas supply line system also includes a manually operated push button in order to reset the pressure switch or a purge controller after an impermissible pressure drop has been detected. This prevents an automatic restart of the painting gas supply line system.

It can also be provided that the painting gas supply system comprises at least one pressure switch, the at least one pressure switch detecting a gas pressure present in the first pressure hose, it being provided in particular that the distributor comprises an extension which is attached to a free end of the third Neck and the push button switch is mounted on the extension. If an extension is used, it allows the connection piece to be retrofitted with a pressure switch without the connection piece having to be changed.

It can also be provided that the painting gas supply system comprises a safety pressure relief valve, a connection between the interior of the distributor and an environment being established by the safety pressure relief valve. As a result, a further safety function is introduced into the system in a simple manner and without additional installation effort by means of the painting gas supply line system.

Furthermore, it is provided that the heating probe extends at least half its length beyond a free end of the second neck when the connector unit is connected to the connector. This ensures that the heating probe can deliver its heat output to the compressed gas not only in the connection piece, but also outside the connection piece.

It can be provided that the connector of the distributor can be designed in various ways, it either being designed in such a way that a longitudinal axis of the first neck and a Longitudinal axis of the second neck form a common longitudinal axis and a longitudinal axis of the third neck protruding, in particular angled, preferably arranged at right angles to the common longitudinal axis of the first and second neck or can be designed such that a longitudinal axis of the first neck and a longitudinal axis of the third Neck form a common longitudinal axis and a longitudinal axis of the second neck protruding, in particular angled, is preferably arranged at right angles to the common longitudinal axis of the first and third neck or can be designed such that a longitudinal axis of the first neck, a longitudinal axis of the second neck and a The longitudinal axis of the third neck are arranged in a Y-like manner to one another. Here, the first-mentioned design has the advantage that the heating probe can be pushed in in a straight line through the connection piece. Here, the second-mentioned design has the advantage that the plug unit and the second pressure hose open opposite one another into the connection piece. Here, the third-named design has the advantage that the connection piece is basically designed as a highly resilient component due to its shape.

It can also be provided that the connection piece is designed as a T-piece, in which one of the necks is arranged with its longitudinal axis at right angles to a common longitudinal axis of the other two necks. As a result, the connection piece forms a component which, by its external shape, already indicates its functional logic and thus facilitates error analysis in the event of malfunctions.

Furthermore, it can also be provided that the heating probe is integrated into a wall of the connection piece and / or that the heating probe is integrated into a jacket of the first pressure hose and in particular is integrated circumferentially or surrounds a jacket of the first pressure hose and in particular the first pressure hose, preferably in a spiral shape runs around and forms a heating jacket or in particular runs along a longitudinal extension of the first pressure hose, that it is also provided in particular that the heating probe comprises a heating line or several heating lines that run along a longitudinal axis of the first pressure hose and that the heating probe in particular has a single heating probe or at least two Comprises individual heating probes, which are arranged along the longitudinal axis, it is provided in particular that the individual heating probe or individual heating probes is or are integrated into the jacket, it is also provided in particular that the first Drucksch lauch is designed as a so-called multi-lumen hose or multi-chamber hose, which receives the compressed air lines and the heating probes or individual heating probes in a single hose or in several individual hoses. The first-mentioned variant has the advantage here that it is not necessary for the first pressure hose to be adapted to the heating probe, so that this variant is particularly suitable for retrofitting existing systems. Here, the second-mentioned variant has the advantage that a flow path of the first pressure hose is not reduced by the heating probe, so that the pressurized gas can flow through the first pressure hose unhindered in spite of the heating probe. Furthermore, the second-mentioned variant has the advantage that the heating probe also forms a type of insulation, so that a temperature drop is slowed down when the heating probe is switched off. A stiffening of the first pressure hose can be largely avoided by a circumferential or spiral circumferential course of the heating probe, so that its desired flexibility is retained. In a combination of the first-mentioned variant and the second-mentioned variant, a particularly long length section is created on which the compressed gas is heated with the heating probe, so that it can act particularly effectively on the compressed gas in order to prevent the formation of condensation.

Provision is also made for the heating probe to be designed as an electrical heater, the electrical heater being arranged in an interior space of the first pressure hose and the first pressure hose being designed as a conductive pressure hose, in particular made of rubber, such that a pressurized enclosure according to ATEX according to a protection level "p" is realized. This makes it possible with simple measures to operate the painting gas supply line system in an explosive environment.

Finally, it can be provided in the painting gas supply system that either, if only the first pressure hose of the painting gas supply system is operated in a potentially explosive environment, the first pressure hose is designed to be protected against ignition by pressurized encapsulation and is made of a conductive material on the outside, or that the entire painting gas supply system is operated in a potentially explosive environment, that all components of the painting gas supply system are protected against ignition by pressurized encapsulation and / or pressure-resistant encapsulation and that the first pressure hose is made of a dissipative material towards the outside. This makes it possible with little effort to design a painting gas supply line system in such a way that it meets the requirements for explosion protection and can thus be operated as a whole or in part in potentially explosive environments.

In the system for painting according to the invention, which has a compressed gas source, which in particular provides moist air or ionized air, comprises a painting gas supply system, a paint gun for spraying a paint and a drainage station, it is provided that a first pressure hose of the painting gas supply system during operation of the system either to the paint gun or to the drainage station or by means of a T-piece, in particular with the interposition of a further pressure hose, can be connected to the spray gun and / or to the drainage station and / or that it can in particular also be provided that the first pressure hose via the T-piece is connected to a breathing mask, in particular with the interposition of a respiratory air preparation device, and / or that the first pressure hose is connected via the T-piece with the interposition of a compressed air preparation device to one or more items of clothing a is connected. This makes it possible to effectively drain the pressure hose in a simple manner when no painting activity is being carried out. Furthermore, this also makes it possible, in particular, to provide breathing air via the pressure hose to supply a breathing mask. It can be provided that the breathing air is prepared by humidifying the branched off compressed air and / or that the breathing air is prepared by dehumidifying the branched compressed air and / or that the breathing air is prepared by heating the branched air and / or that the breathing air is processed a cooling of the branched air is processed. A breathing air supply is particularly advantageous when using moist compressed air, since breathing air only needs to be processed to a small extent. This also makes it possible, in particular, to use the branched-off compressed air to cool clothing. This reduces the amount of tubing required to provide breathing air or cooling air for the clothing.

Furthermore, it can also be provided that the painting gas supply line system of the installation is designed according to at least one of claims 1 to 13 and includes the distributor and the first pressure hose. This results in the advantages listed for the respective claims in combination with the above-mentioned drainage function. This means that the formation of condensate can be prevented particularly effectively and that the energy consumption of the heating probe can also be reduced, since the condensation water can be effectively removed via the drainage station when no painting work is being carried out and therefore no longer needs to be kept at temperature or must be kept gaseous by increasing the temperature.

It is also provided that pressurized gas in the form of moist air with a relative humidity of over 40% is fed in via the first pressure hose or pressurized gas in the form of ionized air or in the form of N2 or pressurized gas enriched with N2 and, in particular, that the system and in particular the painting gas supply system or in particular the distributor comprises a switching device which is optionally switched to an inflow of moist air or an inflow of ionized compressed gas. As a result, a wide variety of painting tasks can be carried out with optimal results. A manual change of the compressed gas can also be provided in that the painting gas supply line system is connected to another compressed gas source. The possibility of automatic switching makes it possible to switch between different painting processes, which each require moist air or ionized air or another form of compressed air or nitrogen, with minimal expenditure of time. Furthermore, this enables a desired compressed gas to be selected for venting the components to be painted.

• - entweder zwischen der Druckgasquelle und dem ersten Druckschlauch angeordnet und unmittelbar an die Druckgasquelle angeschlossen ist
• - oder dass der Verteiler zwischen einem/einer von der Druckgasquelle kommenden zweiten Druckschlauch oder Druckleitung und dem ersten Druckschlauch angeordnet ist
• - wobei es insbesondere vorgesehen ist, dass die Lackiergas-Zuleitungseinrichtung ein Umschaltventil umfasst, welches an den Verteiler angeschlossen ist und an welches wenigstens zwei Druckgasquellen angeschlossen sind, welche unterschiedliche Druckgase bereitstellen.

The system can also provide that the distributor

• - Either arranged between the compressed gas source and the first pressure hose and connected directly to the compressed gas source
• - Or that the distributor is arranged between a second pressure hose or pressure line coming from the pressurized gas source and the first pressure hose
• - It is provided in particular that the painting gas feed device comprises a switchover valve which is connected to the distributor and to which at least two pressurized gas sources are connected, which provide different pressurized gases.

In this way, different types of systems can be upgraded with the painting gas supply system, since these can be flexibly connected to an existing compressed gas source via the second pressure hose or compressed gases can also be mixed.

Finally, it can also be provided that the heating probe extends from the connection piece over at least 50%, in particular 75% and preferably at least 90% of a length of the first pressure hose. In this way, the compressed gas flowing or located in the first pressure hose can be optimally kept at the temperature or heated.

• - dass vor Beginn eines ersten Lackiervorgangs die Lackierpistole an den ersten, insbesondere entwässerten Druckschlauch gekuppelt wird,
• - dass der Lackiervorgang durchgeführt wird,
• - dass nach Abschluss des ersten Lackiervorgangs und mit Beginn einer Lackierpause die Lackierpistole von dem ersten Druckschlauch abgekuppelt wird und mit der Entwässerungsstation verbunden werden kann,
• - dass während der erste Druckschlauch mit der Entwässerungsstation verbunden ist sich in dem ersten Druckschlauch bildendes Kondenswasser über die Entwässerungsstation aus dem ersten Druckschlauch abgeführt werden kann,
• - dass nach Abschluss der Lackierpause und vor Beginn eines zweiten Lackiervorgangs der erste Druckschlauch von der Entwässerungsstation abgekuppelt wird und die Lackierpistole wieder an den ersten Druckschlauch angekuppelt wird.

In the method according to the invention for operating a system for painting, in which the system is designed in particular according to at least one of the preceding claims 13 to 17, it is provided

• - that the spray gun is coupled to the first, in particular drained, pressure hose before the start of the first painting process,
• - that the painting process is carried out,
• - that after completion of the first painting process and with the beginning of a painting break, the paint gun is uncoupled from the first pressure hose and can be connected to the drainage station,
• - that while the first pressure hose is connected to the drainage station, condensation water that forms in the first pressure hose can be discharged from the first pressure hose via the drainage station,
• - that after the end of the painting break and before the start of a second painting process, the first pressure hose is uncoupled from the drainage station and the spray gun is reconnected to the first pressure hose.

With this method, the accumulation of condensate during the rest of the painting activity can be avoided effectively and inexpensively. In particular, this method can also be used in systems that are not equipped with a heating probe to prevent the formation of condensate. In order to use the method in such systems, all that is required is the purchase of a drainage station. With this method, paints from the aerospace industry, in particular, which require adherence to a certain process window with regard to air humidity, can also be used in accordance with the regulations. In the method according to the invention, as an alternative to coupling to the dewatering station, manual or automatic dewatering can take place via the coupling and in particular via the paint spray gun.

As a supplement to the method for operating a system for painting, it is also provided that before the painting process is carried out, metal parts or plastic parts to be painted are statically discharged by blowing air supplied via the first pressure hose in preparation for the painting process, with compressed air or warm in particular Compressed air or ionized compressed air is supplied, it being provided in particular that ionization is carried out by an ionization device which is connected to the first pressure hose via a distributor. This makes it possible to optimize the painting process without any technical expenditure or with minimal technical expenditure. It is also provided that the painting process is carried out with ionized compressed gas.

In the context of the invention, a compressed gas is to be understood in the broader sense as both compressed air and compressed gases of a different type, in particular nitrogen or compressed gas mixtures, which can in particular also be provided with high proportions of moisture and are used in the painting process.

The term type of protection is a designation from explosion protection that stands for various construction principles in this area. The basic idea behind every type of protection is to minimize the risk of the simultaneous presence of an explosive atmosphere and ignition sources.

The type of protection pressurized enclosure (Ex-p) enables non-explosion-protected devices to be operated in potentially explosive areas. The type of protection pressurized enclosure is based on the idea of keeping explosive gas mixtures away from the non-Ex devices used. In the sense of the invention, the type of protection “pressurized enclosure” - abbreviated Ex-p - is understood to mean an ignition protection based on the operation of non-explosion-protected devices in a pressurized housing. In this case, the housing is protected against the ingress of potentially explosive atmospheres in the vicinity of the housing by an overpressure that is permanently present in an interior of the housing. Flushing the device before start-up and / or after a malfunction removes any ignitable gas / air mixture that may be present in the interior of the housing. This can be done manually or automatically.

In the context of the invention, the type of protection “flameproof enclosure” - Ex d for short - is understood to mean ignition protection based on the inclusion of an explosion that may occur inside the housing. Correspondingly, a housing is designed to be explosion-proof and has flameproof gaps at all housing openings. It should also be noted that the surface temperature of the housing is below the ignition temperature of the surrounding explosive atmosphere even if an expected fault occurs. The requirements for equipment that correspond to this type of protection are given in the Standard EN 60079-1 described.

In the context of the invention, a conductive object is understood to mean an object which has a higher electrical resistance than Has conductive objects, but cannot be charged dangerously if this is in contact with earth and is not exposed to any processes that generate high charges. In particular, it can be a conductive object with a maximum resistance of 1 MΩ.

ATEX conformity is understood in the sense of the invention that the painting gas supply system with its distributor and its pressure hose connected to it, which leads to a spray gun, and its heating probe through its pressure switch and its non-return valve connected to the pressure hose and its dissipative pressure hose as well in addition, optionally also through its regulator for purging air and / or manual purging, it is designed in such a way that the ATEX directive 94/9 / EG (Atex 95) or a comparable directive is fulfilled and / or that device protection through pressurized enclosure according to at least one of the protection levels pyb "and / or pxb" and / or "pzc" is fulfilled. In the event of danger, which is detected by a drop in the pressure in the first pressure hose, manual or automated purging of the painting gas supply system is then possible after the heating probe has been switched off and an ionization device that may be present.

Further details of the invention are described in the drawing with the aid of schematically illustrated exemplary embodiments. Figures 1 and 2 show different embodiments of the invention described above.

• 1: eine schematische Ansicht einer ersten Ausführungsvariante eines Lackiergas-Zuleitungssystems;
• 2: eine schematische Ansicht einer zweiten Ausführungsvariante eines Lackiergas-Zuleitungssystems;
• 3: eine schematische Ansicht einer dritten Ausführungsvariante eines Lackiergas-Zuleitungssystems;
• 4: eine schematische Seitenansicht einer ersten Anlage zum Lackieren und
• 5: eine schematische Seitenansicht einer zweiten Anlage zum Lackieren.

Here shows:

• 1 : a schematic view of a first embodiment variant of a painting gas supply line system;
• 2 : a schematic view of a second embodiment variant of a painting gas supply line system;
• 3rd : a schematic view of a third embodiment of a painting gas supply line system;
• 4th : a schematic side view of a first plant for painting and
• 5 : a schematic side view of a second plant for painting.

In the 1 is a first variant of a painting gas supply system 101 shown in schematic view. This includes a distributor to which a first variant of a first pressure hose 151 connected. The distributor 102 includes a connector 103 and a connector unit 104 . The connector 103 includes a first neck 105 , a second neck 106 and a third neck 107 . The connector unit 104 includes a head 108 with which the connector unit 104 with a free end 105a of the first neck 105 is releasably connected.

The connector unit 104 and the connector 103 are connected in such a way that an interior space 109 of the connector 103 is so closed and that the interior 109 through the head 108 the connector unit 104 is sealed in such a way that a compressed gas DG can flow through it at a pressure of up to 20 bar. The connector unit 104 includes a heating probe 110 . A free end 106a of the second neck 106 is as a hose connection 111 is formed, on which the leading to a paint spray gun, not shown, first pressure hose 151 connected. According to one embodiment, it is provided that the connector unit 104 and the connector 103 in one piece, are designed as a component made of one material.

A free end 107a of the third neck 107 is as a connector 112 formed on which a pressurized gas source, not shown, with the interposition of a second pressure hose 161 connected. It can alternatively also be provided here for the distributor 102 to be connected directly to the pressurized gas source. The heating probe 110 is designed as a flexible element, which is a course of the first pressure hose 151 adapts.

The heating probe 110 is as an electric heating probe 113 in the form of a heating cable 114 educated. With a dash-dotted line is in the 1 a wall 171 indicated which one to the right of the wall 171 Lying potentially explosive environment room 172 from one to the left of the wall 171 lying, non-explosive environment 173 separates from each other. Here are the first pressure hose 151 and the heating probe running in it 110 through the wall 171 passed through so that the distributor 102 in the non-explosive environment 172 is arranged and thus can be made technically simpler and thus more cost-effective. In front of the above-mentioned paint gun, not shown, is on one of the hose connection 111 opposite end 151b of the pressure hose 151 a backflow protection 180 arranged. This prevents in particular also in a pressureless or weak pressure state of the first pressure hose 151 an undesired influx of potentially explosive ambient air, e.g. via the spray gun. Through this backflow protection 180 is also prevented that compressed gas DG against a direction of flow x flows back. There is also the first pressure hose 151 designed to be dissipative through a rubber coating. Alternatively, it is also provided that the rubber hose is designed as a solid rubber hose. The distributor 101 also includes a regulator 181 for purge air.

The painting gas supply system 101 includes an extension 115 which at the free end 107a of the third neck 107 of the distributor 102 is connected and in the present embodiment variant through the second pressure hose 161 is formed. Furthermore, the painting gas supply system includes 101 a pressure switch 116 which at the extension 115 is mounted. Alternatively, the pressure switch can also be mounted in other areas of the painting gas supply line system. The pressure switch 116 detected over an interior 117 of the distributor 102 one in the pressure hose 151 existing gas pressure. The regulator mentioned 181 enables, for example, when the pressure switch 116 a pressure of, for example, below 0.5 bar is detected and the painting gas feed system is switched off 101 has caused an automatic purging with compressed gas DG. Alternatively, instead of the controller 181 and the pressure switch 116 there may also be only one pressure switch, flushing being carried out manually in such a case.

The painting gas supply system 101 includes a safety pressure relief valve 118 , being through the safety pressure relief valve 118 a connection between the interior 117 of the distributor 102 and an environment U is made.

The painting gas supply system 101 also includes a pressure regulator 119 , the pressure regulator 119 to the extension 115 connected. Alternatively, it is also provided to connect the pressure regulator to the third neck.

The heating probe 110 extends over its entire length L110 when installed with more than half its length HL110 over the free end 106a of the second neck 106 out into the pressure hose 151 into it.

The connector 103 is designed such that a longitudinal axis LA105 of the first neck 105 and a longitudinal axis LA106 of the second neck 106 form a common longitudinal axis A156 and a longitudinal axis LA107 of the third neck 107 perpendicular to the common longitudinal axis A156 of the first and second necks 105 , 106 is arranged.

The connector is accordingly 103 is designed as a T-piece, in which the third neck 107 with its longitudinal axis LA107 perpendicular to the common longitudinal axis LA156 the other two necks 105 , 106 is arranged.

In the 2 is a second variant of a painting gas supply system 201 shown in schematic view. Here is a distributor 202 to a second variant of a first pressure hose 251 connected. Basically, for this second variant embodiment, the description of the 1 referenced. The correspond to the 1 specified reference numerals each with the reference numerals of the increased by 100 2 . In contrast to that in the 1 The variant shown is a heating probe 210 as a gas heating probe heated by a gas 213 in the form of a heating cable 214 designed and designed in such a way that Directive 94/9 / EC (Atex 95) is met and thus the distributor 202 in an explosive environment 272 can be accommodated. There is also a pressure switch accordingly 216 Installed in such a way that Directive 94/9 / EC (Atex 95) is met.

According to one embodiment, it is provided that the connector unit 204 and the connector 203 in one piece, are designed as a component made of one material.

In front of the above-mentioned paint gun, not shown, is on one of the hose connection 211 opposite end 151b of the pressure hose 251 a backflow protection 280 arranged. This prevents ambient air from flowing in when it is depressurized or depressurized. Through this backflow protection 280 is also prevented that compressed gas DG against a direction of flow x flows back. The distributor 201 also includes a regulator 281 for purge air, with the regulator 281 if the pressure is too low, a signal from the pressure switch 216 receives and then ensures automatic flushing by a flushing device. There is ATEX conformity.

In the 3rd is a third variant of a painting gas supply line system 301 shown in schematic view, with a manifold 302 to a third variant of a first pressure hose 351 connected. Basically, for this third variant embodiment, the description of the 1 referenced. The correspond to the 1 specified reference numerals each with the reference numerals of the increased by 200 3rd . In contrast to the 1 is a heating probe 310 than a heating probe heated by a liquid 313 in the form of a heated hose 314 educated. They also form a longitudinal axis L305 of a first neck 305 and a longitudinal axis L307 a third neck 307 a common longitudinal axis LA357 and a longitudinal axis L306 of the second neck 306 is perpendicular to the common longitudinal axis LA357 of the first and third neck 305 , 307 arranged. The mentioned heating probe 310 is in a coat M351 of the first pressure hose 351 integrated and runs in this along its longitudinal extent. Alternatively, it is also provided that the heating probe runs in a spiral shape circumferentially in the direction of the longitudinal extension of the first pressure hose. By both In variant embodiments, it can also be provided that the heating probe runs inside the jacket in an interior space of the first pressure hose.

According to one embodiment, it is provided that the connector unit 304 and the connector 303 in one piece, are designed as a component made of one material.

In front of the above-mentioned paint gun, not shown, is on one of the hose connection 311 opposite end 351b of the pressure hose 351 a backflow protection 380 arranged. In a pressureless or weak state, this prevents ambient air from flowing in, for example via the spray gun. Through this backflow protection 380 is also prevented that compressed gas DG against a direction of flow x flows back. The distributor 301 also includes a regulator 381 for purge air, with the regulator 381 if the pressure is too low, a signal from the pressure switch 316 receives and then ensures automatic flushing by a flushing device. There is ATEX conformity.

In the 4th is a schematic side view of a first plant 1.1 shown for painting. The first system 1.1 includes a source of pressurized gas 2 for compressed gas 3rd . With the compressed gas 3rd it is moist compressed gas with a relative humidity of over 40%. The attachment 1.1 comprises a first painting gas supply system LZ1 , which is a distributor 7th and a first pressure hose 4th and which can be designed in detail according to one of the previously described painting gas supply line systems. The plant also includes 1.1 a paint gun 5 for spraying a paint and can, as shown, a drainage station 6th for draining the pressure hose 4th include. Here is the pressure hose 4th during the operation of the system 1.1 optionally to the spray gun 5 or to the drainage station 6th connected.

If necessary, the pressure hose can be drained manually 4th take place in that, before the start of a painting process, compressed air is first used without the supply of paint or paint 3rd through the spray gun 5 is blown off. Here is the paint gun 5 aligned in such a way that it blows past a component to be painted, not shown.

Optionally, it can also be provided that the pressure hose 4th via a T-piece to a respirator 23 connected. This can be done with the interposition of a breathing air preparation device 22nd respectively.

The distributor 7th is between the pressurized gas source 2 and the pressure hose 4th arranged and thus directly on the pressure hose 4th connected. Alternatively, the distributor 7th either via a second pressure hose, not shown, to the pressurized gas source 2 be connected or be connected directly to the compressed gas source.

The distributor also includes 7th a connector 8th and a heating probe 9 , with the heating probe 9 from the connector 8th out over a length L4 of the first pressure hose 4th extends.

The first pressure hose 4th is with a first ending 4a via the distributor 7th with the pressurized gas source 2 connected and with a second end 4b optionally with the spray gun 5 or the drainage station 6th connected. According to an embodiment variant not shown, the second end of the pressure hose can also be connected to the paint gun and the drainage station via a T-piece. For this purpose, the first pressure hose comprises 4th at its second end 4b a hose coupling K4b and this includes the spray gun 5 one on the hose coupling K4b adapted gun coupling K5 and the drainage station 6th one on the hose coupling K4b adapted clutch K6 . The drainage station 6th has a so-called "bleeding function", by means of which, when the painting function is inactive, a continuous gas flow and thus continuous drainage of the first pressure hose 4th is feasible. The heating probe 9 runs around the pressure hose 4th spiral-like and forms a hose heater. This heating probe 9 can also according to the statements on the 1 to 3rd than in the pressure hose 4th running, internal heating probe 9 or as in a jacket of the pressure hose, which is not shown in more detail in the schematic representation 4th embedded heating probe 9 be trained. Using the heating probe 9 Heating can be done electrically, with heating gas or heating with hot water. The heating probe is ATEX-compliant. For detailed designs of the distributor and its heating probe, please refer to the description of 1 to 3rd referenced. The one in the 4th shown first system 1.1 can be combined with any painting gas supply line system described in the description of the figures or resulting from the claims.

The first system 1.1 includes a non-return valve 20th . This is in an area of the second end 4b of the first pressure hose 4th arranged. Through this backflow protection 20th is prevented that compressed gas DG against a direction of flow x into the pressure hose 4th flows back. The first plant also includes 1.1 a pressure switch 16 , by means of which a pressure in an interior of the pressure hose 4th is monitored. Furthermore, the first painting air supply line system LZ1 the first plant 1.1 a regulator 21 for purge air include the regulator 21 if the pressure is too low, a signal from the pressure switch 16 receives and then ensures automatic flushing by a flushing device. For the components of the first system 1.1 there is ATEX conformity.

In the 5 is a schematic side view of a second plant 1.2 shown for painting. The second plant 1.2 includes a source of pressurized gas 2 for compressed gas 3rd . With the compressed gases 3rd it is either ionized compressed gas, in particular ionized compressed air or ionized nitrogen or ionized compressed air enriched with nitrogen or ionized carbon dioxide or a non-ionized compressed gas. The second plant 1.2 includes a second painting gas supply system LZ2 , which is a distributor 7th and a first pressure hose 4th and which can be implemented in detail at least partially in accordance with one of the painting gas supply line systems described above. The second plant also includes 1.2 a paint gun 5 for spraying a paint. Here is the pressure hose 4th in operation of the second system 1.2 to the spray gun 5 connected. Optionally, it is also provided that the pressure hose 4th via a T-piece to a respirator 23 connected. This can be done with the interposition of a breathing air preparation device 22nd respectively.

If necessary, the pressure hose can be drained manually 4th take place in that, before the start of a painting process, compressed air is first used without the supply of paint or paint 3rd through the spray gun 5 is blown off. Here is the paint gun 5 aligned in such a way that it blows past a component to be painted, not shown.

The distributor 7th is between the pressurized gas source 2 and the pressure hose 4th arranged and thus directly on the pressure hose 4th connected. Alternatively, the distributor 7th either via a second pressure hose, not shown, to the pressurized gas source 2 be connected or be connected directly to the compressed gas source.

The distributor also includes 7th a connector 8th and a heating probe 9 , with the heating probe 9 from the connector 8th out over a length L4 of the first pressure hose 4th extends.

The first pressure hose 4th is with a first ending 4a via the distributor 7th with the pressurized gas source 2 connected and with a second end 4b detachable from the spray gun 5 connected. For this purpose, the first pressure hose comprises 4th at its second end 4b a hose coupling K4b and this includes the spray gun 5 one on the hose coupling K4b adapted gun coupling K5 . The heating probe 9 is designed as an electrical heating probe and runs along the longitudinal axis in an interior space 4i of the pressure hose 4th . A coat 4m , which the pressure hose 4th is formed from a dissipative material, in particular from rubber. Thus, the second plant 1.2 in an explosive environment 72 ATEX conformity. In particular, the plant 1.2 ATEX conformity in accordance with pressurized encapsulation, with a level of protection pxb or pyb or pzc being achieved in particular. The distributor 7th can at least in part according to the description of the 1 to 3rd be executed.

The second plant 1.2 includes a non-return valve 20th . This is in an area of the second end 4b of the first pressure hose 4th arranged. Through this backflow protection 20th is prevented in particular from using the spray gun 5 Gas against a direction of flow x into the pressure hose 4th flows in. The painting air supply system also includes LZ2 the second plant 1.2 a pressure switch 16 which one in the interior 4i of the pressure hose 4th The prevailing pressure is monitored and the heating probe is switched off if the pressure drops below, for example, 0.5 bar 9 as well as switching off an ionization device 50 causes. Here is the ionization device 50 in the 5 shown only schematically and can alternatively both in front of the pressure hose 4th as well as in the pressure hose 4th , as well as after the pressure hose 4th be arranged. The second plant also includes 1.2 either a regulator 21 for purge air or a reset switch 51 , so that after a shutdown caused by the pressure switch, the pressure hose is flushed 4th either automated and the second system 1.2 is restarted automatically or flushing takes place manually and the second system 1.2 then manually using the reset switch 51 is restarted.

• - dass vor Beginn eines ersten Lackiervorgangs die Lackierpistole 5 an den ersten Druckschlauch 4 gekuppelt wird,
• - dass der Lackiervorgang durchgeführt wird,
• - dass nach Abschluss des ersten Lackiervorgangs und mit Beginn einer Lackierpause die Lackierpistole 5 von dem ersten Druckschlauch 4 abgekuppelt wird und mit der Entwässerungsstation 6 verbunden werden kann,
• - dass während der erste Druckschlauch 4 mit der Entwässerungsstation 6 verbunden ist sich in dem ersten Druckschlauch 4 bildendes Kondenswasser über die Entwässerungsstation 6 aus dem ersten Druckschlauch 4 abgeführt wird,
• - dass nach Abschluss der Lackierpause und vor Beginn eines zweiten Lackiervorgangs der erste Druckschlauch 4 von der Entwässerungsstation 6 abgekuppelt wird und die Lackierpistole 5 wieder an den Druckschlauch 4 angekuppelt wird.

On the basis of to the 4th described first system 1.1 or on the basis of to the 5 described second plant 1.2 provides a method for operating the first system 1.1 or the second system 1.2 for painting before:

• - that the spray gun is used before the start of the first painting process 5 to the first pressure hose 4th is coupled,
• - that the painting process is carried out,
• - that after the first painting process has been completed and with the start of a painting break, the spray gun 5 from the first pressure hose 4th is uncoupled and with the drainage station 6th can be connected,
• - that during the first pressure hose 4th with the drainage station 6th is connected in the first pressure hose 4th educational Condensation water over the drainage station 6th from the first pressure hose 4th is discharged,
• - that after the end of the painting break and before the start of a second painting process, the first pressure hose 4th from the drainage station 6th is disconnected and the spray gun 5 back to the pressure hose 4th is coupled.

In particular, the systems described above by way of example are also possible 1.1 and 1.2 combined as a system with a single pressure hose. The compressed gas source can optionally provide at least one of the aforementioned and subsequent compressed gases.

For the variants of the 1 to 5 applies that as pressurized gas 3rd or painting gas to the painting gas supply system 101 or. 201 or. 301 humidified air or warm humidified air or with 1 to 30 kV ionized air or with 1 to 30 kV ionized warm air or nitrogen or compressed air enriched with nitrogen or warm nitrogen or nitrogen enriched warm compressed air or compressed air or warm compressed air or another compressed gas such as e.g. Carbon dioxide is supplied.

The pressurized gas can be heated by activating the hose heater. A selection between compressed air, ionized compressed air, humidified compressed air, nitrogen or compressed air enriched with nitrogen can be made by means of a corresponding switchover valve. This means that the system can be operated with a wide variety of pressure gases DG. If compressed gas is selected as ionized compressed gas or as humidified air, metal parts or plastic parts, which are blown with this, can be statically discharged in preparation for the painting process. A selection between different compressed gases can be made by means of a switchover valve. If compressed gas is selected as ionized compressed gas or as humidified air and used as painting air, metal parts or plastic parts can be statically discharged during a painting process and / or statically not charged as strongly as when using air as the compressed gas.

In principle, all versions of the painting gas supply system, regardless of the above, are in compliance with ATEX.

List of reference symbols

1.1.1.2

first / second plant

2

Pressurized gas source

3

Pressurized gas

4th

first pressure hose

4a

first end of 4

4b

second end of 4

4i

Interior of 4

4m

Coat of 4

5

Spray gun

6th

Drainage station

7th

Distributor

8th

Connector

9

Heating probe

16

Pressure switch

20th

Backflow protection

21

Regulator for purge air

22nd

Breathing air preparation device

23

Respirator

50

Ionization device

51

Reset switch

72

explosive environment

K4b

Hose coupling

K5

Gun coupling

K6

coupling

LZ1, LZ2

first / second painting gas supply system

101

Painting gas supply system

102

Distributor

103

Connection piece from 102

104

Connector unit from 102

105

first neck of 103

105a

free end of 105

106

second neck of 103

106a

free end of 106

107

third neck of 103

107a

free end of 107

108

Head of 104

109

Interior of 103

110

Heating probe

111

Hose connection

112

connection

113

electric heating probe

114

Heating cable

115

renewal

116

Pressure switch

117

Interior of 102

118

Safety pressure relief valve

119

Pressure regulator

151

first pressure hose

151b

End of 151

161

second pressure hose

171

wall

172

explosive environment

173

non-explosive environment

180

Backflow protection

181

Regulator for purge air

HL110

half length of 110

L110

Length of 110

LA105

Longitudinal axis of 105

LA106

Longitudinal axis of 106

LA107

Longitudinal axis of 107

LA156

common axis of 105 and 106

U

Surroundings

201

Painting gas supply system

202

Distributor

203

Connector from 202

204

Connector unit from 202

205

first neck of 203

205a

free end of 205

206

second neck of 203

206a

free end of 206

207

third neck of 203

207a

free end of 207

208

Head of 204

209

Interior of 203

210

Heating probe

211

Hose connection

212

connection

213

Gas heating probe

214

Heating cable

215

renewal

216

Pressure switch

217

Interior of 202

218

Safety pressure relief valve

219

Pressure regulator

251

first pressure hose

251b

End of 251

261

second pressure hose

272

explosive environment

280

Backflow protection

281

Regulator for purge air

LA205

Longitudinal axis of 205

LA206

Longitudinal axis of 206

LA207

Longitudinal axis of 207

LA256

common axis of 205 and 206

301

Painting gas supply system

302

Distributor

303

Connection piece from 302

304

Connector unit from 302

305

first neck of 303

305a

free end of 305

306

second neck of 303

306a

free end of 306

307

third neck of 303

307a

free end of 307

308

Head of 304

309

Interior of 303

310

Heating probe

311

Hose connection

312

connection

313

heating probe heated with liquid

314

Airbag

315

renewal

316

Pressure switch

317

Interior of 302

318

Safety pressure relief valve

319

Pressure regulator

351

first pressure hose

351b

End of 351

361

second pressure hose

380

Backflow protection

381

Regulator for purge air

LA357

common longitudinal axis

L305

Longitudinal axis

L306

Longitudinal axis

L307

Longitudinal axis

M351

Coat of 351

x

Direction of flow

QUOTES INCLUDED IN THE DESCRIPTION

This list of the documents listed by the applicant was generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Patent literature cited

• DE 102018129038 [0003]

Non-patent literature cited

• Standard EN 60079-1 [0035]

Claims (33)

Painting gas supply system (101; 201; 301; LZ1; LZ2) comprising a distributor (102; 202; 302; 7), the distributor (102; 202; 302; 7) having a connection piece (103; 203; 303) and a Plug unit (104; 204; 304) comprises, - wherein the connection piece (103; 203; 303) has a first neck (105; 205; 305), a second neck (106; 206; 306) and a third neck (107; 207 ; 307), - wherein the plug unit (104; 204; 304) comprises a head (108; 208; 308) with which the plug unit (104; 204; 304) with a free end (105a; 205a; 305a) of the first neck (105; 205; 305) is connected, characterized in that the plug unit (104; 204; 304) and the connecting piece (103; 203; 303) are connected in such a way that an interior space (109; 209; 309) of the connection piece (103; 203; 303) is closed in such a way and that the interior (103; 203; 303) is sealed by the head (108; 208; 308) of the plug unit (104; 204; 304) in such a way that a compressed gas (DG; 3) with a pressure k can flow through up to 20 bar, - that the connector unit (104; 204; 304) comprises a heating probe (110; 210; 310; 9), - that the free end (106a; 206a; 306a) of the second neck (106; 206; 306) is designed as a hose connection (111; 211; 311). Painting gas supply system according to Claim 1 , characterized in that the painting gas supply system (101; 201; 301; LZ1; LZ2) comprises - a first pressure hose (151; 251; 351; 4), which is designed as a conductive pressure hose and in particular as a rubber hose, - wherein the painting gas - The supply system comprises a non-return valve (180; 280; 380; 20) installed in the first pressure hose (151; 251; 351; 4) or connected to the first pressure hose (151; 251; 351; 4) and / or - wherein the painting gas -Feed system comprises a pressure switch (116; 216; 316; 16) and in particular a reset switch (51), the pressure switch (116; 216; 316; 16) having an in the first pressure hose (151; 251; 351; 4) detected gas pressure and the reset switch (51), by means of which the pressure switch (16) can be reset after detection of a too low pressure. Painting gas supply system according to Claim 2 , characterized in that the painting gas supply line system comprises a regulator (181; 281; 381; 21) for purging air. Painting gas supply system according to Claim 1 or 2 or 3rd , characterized in that the painting gas supply line system (101; 201; 301; LZ1; LZ2) comprises a second pressure hose (161; 261; 361) or a second pressure line and that a free end (107a; 207a; 307a) of the third neck (107; 207; 307) is designed as a connection (112; 212; 312) to which a compressed gas source (2) is connected directly or with the interposition of the second pressure hose (161; 261; 361) or the second pressure line. Painting gas supply system according to Claim 1 or 2 or 3rd , or 4 characterized in that the heating probe (110; 210; 310; 9) is designed as a flexible element, - wherein the heating probe (110; 9) is designed in particular as an electrical heating probe (113), preferably as a heating cable (114) or - wherein the heating probe (210) is designed in particular as a heating probe (213) heated by a liquid, preferably as a heating hose (214) or - in which the heating probe (310) is in particular as a gas heating probe (313) heated by a gas, preferably as a heating line (314) is formed. Painting gas supply system according to at least one of the preceding claims, characterized in that the distributor (102; 202; 302; 7) comprises an extension (115; 215; 315) which is attached to a free end (107a; 207a; 307a) of the third neck (107; 207; 307) is connected, and the pressure switch (116; 216; 316) is mounted on the extension (115; 215; 315). Painting gas supply line system according to at least one of the preceding claims, characterized in that the painting gas supply line system (101; 201; 301; LZ1; LZ2) comprises a safety pressure relief valve (118; 218; 318), - whereby the safety pressure relief valve (118; 218 ; 318) a connection between the interior space (117; 217; 317) of the distributor (102; 202; 302) and an environment (U) is established. Painting gas supply system according to at least one of the preceding claims, characterized in that the heating probe (110; 210; 310; 9) when the connector unit (104; 204; 304) is connected to the connector (103; 203; 303) at least half of it Length (HL110) extends beyond a free end (106a; 206a; 306a) of the second neck (106; 206; 306). Painting gas supply system according to at least one of the preceding claims, characterized in that the connection piece (103; 203; 303) is designed such that - either a longitudinal axis (LA105; LA205) of the first neck (105; 205) and a longitudinal axis (LA106 ; LA206) of the second neck (106; 206) form a common longitudinal axis (LA156; LA256) and one Longitudinal axis (LA107; LA207) of the third neck (107; 207) protruding, in particular angled, preferably at right angles to the common longitudinal axis (LA156; LA256) of the first and second necks (105, 106; 205, 206) is arranged - or one Longitudinal axis (LA305) of the first neck (305) and a longitudinal axis (LA307) of the third neck (307) form a common longitudinal axis (LA357) and a longitudinal axis (LA306) of the second neck (306) protruding, in particular angled, preferably at right angles to the common longitudinal axis (LA357) of the first and third neck (305, 307) is arranged - or a longitudinal axis of the first neck, a longitudinal axis of the second neck and a longitudinal axis of the third neck are arranged in a Y-like manner to one another. Painting gas supply system according to at least one of the preceding claims, characterized in that the connection piece (103; 203; 303) is designed as a T-piece, in which one of the necks (107; 207; 306) with its longitudinal axis (LA107, LAL207, LA306) is arranged at right angles to a common longitudinal axis (LA156, LA256, LA357) of the other two necks (105, 106; 205; 206; 305, 307). Painting gas supply system according to at least one of the preceding claims, characterized in that - the heating probe (110; 210; 310; 9) is integrated into a wall of the connection piece (103; 203; 303) and / or - that the heating probe (310; 9) is integrated into a jacket (M351; 4m) of the first pressure hose (351; 4) and in particular is integrated circumferentially or surrounds a jacket (M351) of the first pressure hose (4) and, in particular, preferably runs around the first pressure hose (4) in a spiral shape forms a heating jacket or in particular runs along a longitudinal extension of the first pressure hose, - that it is also provided in particular that the heating probe comprises a heating line or several heating lines that run along a longitudinal axis of the first pressure hose and that the heating probe is in particular a single heating probe or at least two individual heating probes comprises, which are arranged along the longitudinal axis, it being provided in particular that di e individual heating probe or individual heating probes is or are integrated into the jacket, whereby it is also provided in particular that the first pressure hose is designed as a so-called multi-lumen hose or multi-chamber hose, which in a single hose or in several individual hoses the compressed air lines and the heating probes or individual heating probes records. Painting gas supply system according to at least one of the preceding claims, characterized in that the heating probe (9) is designed as an electrical heater, the electrical heater being arranged in an interior (4i) of the first pressure hose (4) and the first pressure hose (4) is designed as a dissipative pressure hose, so that a pressurized enclosure according to ATEX is implemented according to a protection level "p". Painting gas supply system in particular according to at least one of the preceding claims, characterized in that the first pressure hose (151; 251; 351; 4) comprises a heater such that ATEX conformity is implemented according to pressurized encapsulation and in particular according to a protection level “p”. Painting gas supply system in particular according to at least one of the preceding claims, characterized in that the first pressure hose (151; 251; 351; 4) comprises a heater and is designed as a conductive hose and / or a pressure switch (16; 116; 216; 316) which detects a pressure within the first pressure hose (151; 251; 351; 4) and / or comprises a manual and / or automated flushing device, such that ATEX conformity is implemented according to pressurized enclosure and in particular according to a protection level “p”. Painting gas supply system in particular according to at least one of the preceding claims, characterized in that the first pressure hose (151; 251; 351; 4) comprises a heater and is designed as a conductive hose and / or a pressure switch (16; 116; 216; 316) which detects a pressure within the first pressure hose (151; 251; 351; 4) and / or comprises a manual and / or automated flushing device, such that ATEX conformity is implemented according to pressurized enclosure and in particular according to a protection level “p” and in particular according to the Type of protection pxb and / or pyb and / or pzc is implemented. Painting gas supply system according to at least one of the preceding claims, characterized in that either, if only the first pressure hose (151) of the painting gas supply system (101) is operated in an explosive environment (172), the first pressure hose (151) is through Pressurized enclosure is designed to be protected against ignition and is made of a conductive material towards the outside - or, the entire painting gas supply system (201) is operated in an explosive environment (272), all components of the Painting gas supply line system (101; 201; 301) are designed to be protected against ignition by pressurized encapsulation and / or pressure-resistant encapsulation, and the first pressure hose (251) is formed outwardly from a dissipative material. System (1.1; 1.2) for painting, the system (1.1; 1.2) comprising a compressed gas source (2) which provides moist compressed air as compressed gas (39), characterized in that this compressed gas source (2) is a moist compressed air with a relative humidity of at least 30% and preferably at least 40% and is used by means of a spray gun (5) to spray a paint and / or is connected to a respiratory mask (23) by means of at least one distributor piece, which is in particular designed as a T-piece. Plant after Claim 17 , characterized in that the system (1.1; 1.2) comprises a painting gas supply line system (101; 201; 301; LZ1; LZ2), the painting gas supply system (101; 201; 301; LZ1; LZ2) of the system (1.1; 1.2) after at least one of the Claims 1 to 16 is formed and comprises the distributor (7; 102; 202; 302) and the first pressure hose (4). Plant after Claim 17 or 18th , characterized in that the system (1.1; 1.2) comprises a painting gas supply line system (101; 201; 301; LZ1; LZ2), the painting gas supply system (101; 201; 301; LZ1; LZ2) of the system (1.1; 1.2) comprises the first pressure hose (4; 151; 251; 351) and is connected to one or more items of clothing that can be cooled by means of compressed air by means of at least one branch. Plant for painting in particular according to at least one of the Claims 17 to 19th , wherein the system (2) comprises a pressurized gas source (2) and a painting gas supply line system (101; 201; 301; LZ1; LZ2), characterized in that a first pressure hose (4; 151; 251; 351) of the painting gas supply system (101; 201 ; 301; LZ1; LZ2) has ATEX conformity and in particular has ATEX conformity through pressurized enclosure. Plant according to one of the preceding Claims 17 to 20th , characterized in that the first pressure hose (4; 151; 251; 351) comprises ATEX conformity through pressurized encapsulation and in particular through compliance with the protection level pxb and / or pyb and / or pzc and it is provided in particular that the system has a painting gas supply system ( 101; 201; 301; LZ1; LZ2), which after at least one of the Claims 1 to 16 is trained. Plant for painting according to one of the preceding Claims 17 to 21 , the system (1.1; 1.2) comprising a compressed gas source (2) which provides ionized compressed gas as compressed gas (3), characterized in that this compressed gas source (2) is an ionized compressed gas in the form of - ionized compressed air or - ionized nitrogen or - ionized provides compressed air enriched with nitrogen and is used by means of a paint gun (5) for spraying a paint and / or is used by blowing off for static discharge of metal and / or plastic surfaces. Plant for painting, in particular after at least one of the Claims 17 to 22nd , the system (1.1; 1.2) comprising a compressed gas source (2) which provides ionized compressed gas as compressed gas (3), characterized in that this ionized compressed gas is used to spray a paint by means of a paint gun (5) and / or by means of at least one distributor , which is designed in particular as a T-piece, is connected to a breathing mask (23). Plant according to one of the preceding Claims 17 to 23 , characterized in that the system (1.1; 1.2) comprises a painting gas supply system (101; 201; 301; LZ1; LZ2), comprises the first pressure hose (4; 151; 251; 351) and by means of at least one distributor piece, which in particular is designed as a T-piece, is connected to a respirator (23) and / or is connected by means of at least one branch to one or more items of clothing that can be cooled using compressed air, and in particular that a compressed air processing device is located in front of the respirator (23) or the at least one item of clothing is located and in particular thereby the compressed gas (3) is either cooled or heated and / or is either humidified or dehumidified. Plant for painting, in particular after at least one of the Claims 17 to 24 , wherein the system (1) comprises a compressed gas source (2), a painting gas supply system (101; 201; 301; LZ1; LZ2), a painting gun (5) for spraying a paint and in particular a dewatering station (6), characterized in that, that a first pressure hose (4) of the painting gas supply system (101; 201; 301; LZ1; LZ2) during operation of the system (1) either to the paint gun (5) or to the drainage station (6) or by means of a distributor piece, which in particular is designed as a T-piece, in particular with the interposition of a further pressure hose connected to the spray gun (5) and / or to the drainage station (6) and - that it is also provided that preferably when using moist air as the compressed gas (3 ) the first pressure hose (4) in particular with the interposition of a Breathing air processing device (22) is connected to a respiratory protection mask (23) and / or - that the first pressure hose (4) is connected to one or more items of clothing that can be cooled by means of compressed air with the interposition of a cooling air supply device. Plant after Claim 25 , characterized in that the painting gas supply system (101; 201; 301; LZ1; LZ2) of the system (1) according to at least one of the Claims 1 to 13th is formed and comprises the distributor (7; 102; 202; 302) and the first pressure hose (4). Plant after Claim 26 , characterized in - that compressed gas (DG, 3) in the form of moist air with a relative humidity of over 40% is fed in via the first pressure hose (4) or compressed gas (DG, 3) in the form of the first pressure hose (4) is supplied by ionized air and that it is provided in particular that the distributor (7) comprises a switching device which is switched to an inflow of moist air or which is connected to an inflow of ionized compressed gas. Plant according to at least one of the preceding Claims 25 to 27 , characterized in that the distributor (7; 102; 202; 302) - either arranged between the pressurized gas source (2) and the first pressure hose (4) and connected directly to the pressurized gas source (2) - or that the distributor (102; 202; 302; 7) is arranged between a second pressure hose coming from the pressurized gas source (2) and the first pressure hose (4) and - that it is provided in particular that the painting gas supply device (101; 201; 301; LZ1; LZ2) comprises a switching valve which is connected to the distributor (102; 202; 302; 7) and to which at least two compressed gas sources (2) are connected, which provide different compressed gases (DG; 3). Plant according to at least one of the preceding Claims 25 to 28 , characterized in that a heating probe (110; 210; 310; 9) extends from the connection piece (103; 203; 303) over at least 50%, in particular 75% and preferably at least 90% of a length of the first pressure hose (151; 10 ) extends. Method for operating a plant (1) for painting, the plant (1) in particular according to at least one of the preceding Claims 17 to 29 is designed, characterized in that before a painting process and / or after a painting process and / or in a painting break between two painting processes, condensation water that forms in the first pressure hose (4) is discharged from the first pressure hose (4), in that the first pressure hose (4) is connected to the drainage station (6) and / or by means of a manual and / or automated or programmed process by means of the compressed gas (3) from the first pressure hose (4) condensation water that forms is discharged into the atmosphere. Procedure according to Claim 30 , characterized in that an automated paint gun such as a painting robot or a painting machine discharges condensation water that forms in the first pressure hose (4) into the atmosphere before a painting process is carried out and this takes place in particular next to an object to be painted and this in particular via a program control can be done. Method for operating a plant (1) for painting, in particular according to Claim 30 or 31 , wherein the system (1) in particular according to at least one of the preceding Claims 17 to 29 is designed, characterized in - that before the start of a first painting process the paint spray gun (5) is coupled to the first pressure hose (4), - that the painting process is carried out, - that after the first painting process has been completed and with the start of a painting break, the paint spray gun ( 5) is uncoupled from the first pressure hose (4) and is connected to the drainage station (6), - that while the first pressure hose (4) is connected to the drainage station (6), condensation water forms in the first pressure hose (4) via the The drainage station (6) is removed from the first pressure hose (4), - that after the end of the painting break and before the start of a second painting process, the first pressure hose (4) is uncoupled from the drainage station (6) and the spray gun (5) is connected to the first again The pressure hose (4) is coupled. Procedure according to Claim 32 , characterized in that before the painting process to be painted metal parts or plastic parts are statically discharged by blowing with air supplied via the first pressure hose (4) in preparation for the painting process, in particular compressed air or warm compressed air or ionized compressed air or nitrogen or with Nitrogen-enriched compressed air is supplied, it being provided in particular that ionization is carried out by an ionization device which is connected to the first pressure hose via a distributor.

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