EP3842153A1 - Système d'alimentation en gaz de peinture, installation de peinture et procédé de fonctionnement d'une installation de peinture - Google Patents

Système d'alimentation en gaz de peinture, installation de peinture et procédé de fonctionnement d'une installation de peinture Download PDF

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Publication number
EP3842153A1
EP3842153A1 EP20208800.1A EP20208800A EP3842153A1 EP 3842153 A1 EP3842153 A1 EP 3842153A1 EP 20208800 A EP20208800 A EP 20208800A EP 3842153 A1 EP3842153 A1 EP 3842153A1
Authority
EP
European Patent Office
Prior art keywords
painting
pressure hose
gas supply
pressure
hose
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
EP20208800.1A
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German (de)
English (en)
Inventor
Thomas Mayer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of EP3842153A1 publication Critical patent/EP3842153A1/fr
Pending legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/24—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas with means, e.g. a container, for supplying liquid or other fluent material to a discharge device
    • B05B7/2402—Apparatus to be carried on or by a person, e.g. by hand; Apparatus comprising containers fixed to the discharge device
    • B05B7/2405—Apparatus to be carried on or by a person, e.g. by hand; Apparatus comprising containers fixed to the discharge device using an atomising fluid as carrying fluid for feeding, e.g. by suction or pressure, a carried liquid from the container to the nozzle
    • B05B7/2416—Apparatus to be carried on or by a person, e.g. by hand; Apparatus comprising containers fixed to the discharge device using an atomising fluid as carrying fluid for feeding, e.g. by suction or pressure, a carried liquid from the container to the nozzle characterised by the means for producing or supplying the atomising fluid, e.g. air hoses, air pumps, gas containers, compressors, fans, ventilators, their drives
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/24—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas with means, e.g. a container, for supplying liquid or other fluent material to a discharge device
    • B05B7/2489—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas with means, e.g. a container, for supplying liquid or other fluent material to a discharge device an atomising fluid, e.g. a gas, being supplied to the discharge device
    • B05B7/2491—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas with means, e.g. a container, for supplying liquid or other fluent material to a discharge device an atomising fluid, e.g. a gas, being supplied to the discharge device characterised by the means for producing or supplying the atomising fluid, e.g. air hoses, air pumps, gas containers, compressors, fans, ventilators, their drives
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
    • A62B17/00—Protective clothing affording protection against heat or harmful chemical agents or for use at high altitudes
    • A62B17/005—Active or passive body temperature control
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
    • A62B7/00—Respiratory apparatus
    • A62B7/02—Respiratory apparatus with compressed oxygen or air
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
    • A62B9/00—Component parts for respiratory or breathing apparatus
    • A62B9/04—Couplings; Supporting frames

Definitions

  • the invention relates to a painting air supply line system, a plant for painting and a method for operating a plant for painting.
  • 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.
  • 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.
  • the inflow of gas from the environment via the spray gun can be effectively prevented.
  • the ionization device which may be present and the painting gas supply system or a supply of compressed air, then takes place
  • a manual flushing of the painting gas supply system with compressed gas or an inert flushing gas, such as N2 whereby the supplied compressed gas or the supplied inert flushing gas flows off via the spray gun or a discharge valve, the discharge valve in the area of the end of the first pressure hose or is arranged in the area of the spray gun.
  • a manual reset takes place by actuating a reset switch, which includes the painting gas supply system.
  • the painting gas supply line system additionally comprises a regulator for purging air.
  • 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.
  • 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.
  • the heating probe, the possibly existing ionization device and the painting gas supply system or the supply of pressurized gas can be restored by the manual reset, for example by actuating a reset switch after flushing is activated.
  • 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.
  • the distributor can be integrated into different system configurations.
  • 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.
  • 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 system also includes a manually operated push button to reset the pressure switch or of a purge controller after an impermissible pressure drop has been detected. This prevents an automatic restart of the painting gas supply line system.
  • 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 having to change the connection piece.
  • 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.
  • 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.
  • the connector of the distributor is designed in various ways, either in such a way can be designed so 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, is preferably arranged at right angles to the common longitudinal axis of the first and second neck or can be designed in such a way 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, preferably arranged at right angles to the common longitudinal axis of the first and third neck or can be designed such that a The 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.
  • the first-mentioned design has the advantage that the heating probe can be pushed in in a straight line through the connection piece.
  • the second-mentioned design has the advantage that the plug unit and the second pressure hose open opposite one another into the connection piece.
  • the third-named design has the advantage that the connection piece is basically designed as a highly resilient component due to its shape.
  • 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.
  • connection piece forms a component which, by its external shape, already indicates its functional logic and thus facilitates error analysis in the event of faults.
  • 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 is in particular integrated circumferentially or surrounds a jacket of the first pressure hose and, in particular, preferably spirals around the first pressure hose and forms a heating jacket or in particular runs along a longitudinal extension of the first pressure hose, in particular that it is also provided that the heating probe comprises a heating line or several heating lines which run along a longitudinal axis of the first pressure hose and that the heating probe comprises in particular a single heating probe or at least two individual heating probes which are arranged along the longitudinal axis, it being provided in particular that the single heating probe or Individual heating probes is or are integrated into the jacket, it being provided in particular that the first pressure hose is designed as a so-called multi-lumen hose or multi-chamber hose, which is in a single hose or in me Its individual hoses accommodate the compressed air lines and the heating probes or individual heating probes.
  • 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.
  • 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.
  • 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.
  • the heating probe 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 an overpressure enclosure according to ATEX corresponding to a protection level "p" is realized.
  • ATEX a protection level of rubber
  • the first pressure hose of the painting gas supply system 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.
  • a first pressure hose of the painting gas supply system During operation of the system, it can optionally be connected to the spray gun or to the drainage station or by means of a T-piece, in particular with the interposition of a further pressure hose to the spray gun and / or to the drainage station and / or that it can in particular also be provided that preferably When using moist air as compressed gas, the first pressure hose is connected to a respiratory protection mask via the T-piece, 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 dispenser line device is connected to one or more items of clothing that can be cooled by means of compressed air.
  • 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 treatment only needs to be carried out to a small extent. It is the same here in particular possible to use the branched compressed air to cool clothes. This reduces the amount of tubing required to provide breathing air or cooling air for the clothing.
  • 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.
  • 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.
  • 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 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.
  • 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.
  • ionization device which is connected to the first pressure hose via a distributor.
  • 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.
  • 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-proof devices to be operated in potentially explosive areas.
  • the type of protection pressurized enclosure is the The underlying idea is to keep explosive gas mixtures away from the non-Ex devices used.
  • the "pressurized enclosure" type of protection - abbreviated Ex-p - is understood to mean an ignition protection based on the operation of non-explosion-protected devices in a pressurized housing.
  • the housing is protected against the ingress of potentially explosive atmospheres in the vicinity of the housing by an overpressure permanently present in an interior of the housing. Flushing the device before it is started up and / or after an operational malfunction removes any ignitable gas / air mixture that may be present in the interior of the housing. This can be done manually or automatically.
  • the "flameproof enclosure" type of protection - Ex d for short - is understood to mean ignition protection based on the inclusion of an explosion that may occur inside the housing.
  • 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 described in the EN 60079-1 standard.
  • a conductive object is understood to mean an object which has a higher electrical resistance than conductive objects, but is not dangerously charged if it is in contact with earth and is also not exposed to any strong charge-generating processes.
  • it can be a conductive object with a maximum resistance of 1 M ⁇ .
  • 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.
  • a first embodiment variant of a painting gas supply line system 101 is shown in a schematic view.
  • This comprises a distributor to which a first variant embodiment of a first pressure hose 151 is connected.
  • the distributor 102 comprises a connection piece 103 and a plug unit 104.
  • the connection piece 103 comprises a first neck 105, a second neck 106 and a third neck 107.
  • the plug unit 104 comprises a head 108, with which the plug unit 104 with a free end 105a of the first neck 105 is releasably connected.
  • the plug unit 104 and the connection piece 103 are connected in such a way that an interior 109 of the connection piece 103 is closed in such a way and that the interior 109 is sealed by the head 108 of the plug unit 104 in such a way that a compressed gas DG with a pressure of up to 20 bar can be supplied to it can flow through.
  • the plug unit 104 comprises a heating probe 110.
  • a free end 106a of the second neck 106 is designed as a hose connection 111 to which the first pressure hose 151 leading to a paint spray gun (not shown) is connected.
  • the Plug unit 104 and the connection piece 103 are formed in one piece, as a component made from one material.
  • a free end 107a of the third neck 107 is designed as a connection 112 to which a pressurized gas source (not shown) is connected with the interposition of a second pressure hose 161.
  • a pressurized gas source not shown
  • the distributor 102 is connected directly to the compressed gas source.
  • the heating probe 110 is designed as a flexible element which adapts to the course of the first pressure hose 151.
  • the heating probe 110 is designed as an electrical heating probe 113 in the form of a heating cable 114.
  • a wall 171 is indicated, which separates a potentially explosive environment, space 172, lying to the right of the wall 171, from a non-potentially explosive environment 173, lying to the left of the wall 171.
  • the first pressure hose 151 and the heating probe 110 running therein are passed through the wall 171, so that the distributor 102 is arranged in the non-explosive environment 172 and can thus be designed in a technically simpler and thus more cost-effective manner.
  • a non-return valve 180 is arranged in front of the above-mentioned paint spray gun (not shown) at an end 151b of the pressure hose 151 opposite the hose connection 111.
  • This backflow protection 180 also prevents compressed gas DG from flowing back against a flow direction x.
  • the first pressure hose 151 is covered with rubber designed to be dissipative. Alternatively, it is also provided that the rubber hose is designed as a solid rubber hose.
  • the manifold 101 also includes a regulator 181 for purge air.
  • the painting gas supply line system 101 comprises an extension 115 which is connected to the free end 107a of the third neck 107 of the distributor 102 and, in the present embodiment, is formed by the second pressure hose 161. Furthermore, the painting gas supply line system 101 comprises a pressure switch 116 which is mounted on the extension 115. Alternatively, the pressure switch can also be mounted in other areas of the painting gas supply system. The pressure switch 116 detects a gas pressure present in the pressure hose 151 via an interior 117 of the distributor 102.
  • the mentioned controller 181 enables, for example, when the pressure switch 116 detects a pressure of, for example, below 0.5 bar and has caused the painting gas supply line system 101 to be switched off, automatic purging with compressed gas DG. Alternatively, instead of the regulator 181 and the pressure switch 116, only one pressure switch can be present, in which case flushing is carried out manually.
  • the painting gas supply line system 101 comprises a safety pressure relief valve 118, a connection between the interior space 117 of the distributor 102 and an environment U being established by the safety pressure relief valve 118.
  • the painting gas supply line system 101 also comprises a pressure regulator 119, the pressure regulator 119 being connected to the extension 115. Alternatively, it is also provided to connect the pressure regulator to the third neck.
  • the heating probe 110 extends over its entire length L110 in the installed state with more than half its length HL110 over the free end 106a of the second neck 106 out into the pressure hose 151.
  • the connecting piece 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 at right angles to the common longitudinal axis A156 of the first and second neck 105, 106 is arranged.
  • connection piece 103 is designed as a T-piece, in which the third neck 107 is arranged with its longitudinal axis LA107 at right angles to the common longitudinal axis LA156 of the other two necks 105, 106.
  • FIG. 2 a second embodiment variant of a painting gas supply line system 201 is shown in a schematic view.
  • a distributor 202 is connected to a second variant embodiment of a first pressure hose 251.
  • this second variant embodiment is referred to in the description of the Figure 1 referenced.
  • The correspond to the Figure 1 specified reference numerals each with the reference numerals increased by 100 Figure 2 .
  • a heating probe 210 is designed as a gas heating probe 213 heated by a gas in the form of a heating line 214 and designed in such a way that Directive 94/9 / EC (ATEX 95) is met and thus the distributor 202 is in an explosive environment 272 can be accommodated.
  • a pressure switch 216 is also installed in such a way that Directive 94/9 / EC (Atex 95) is met.
  • the plug unit 204 and the connection piece 203 are designed in one piece, as a component made from one material.
  • a non-return valve 280 is arranged in front of the above-mentioned paint spray gun (not shown) at an end 151b of the pressure hose 251 opposite the hose connection 211. This prevents ambient air from flowing in when it is depressurized or depressurized. This backflow protection 280 also prevents compressed gas DG from flowing back against a flow direction x.
  • the distributor 201 also includes a regulator 281 for scavenging air, the regulator 281 receiving a signal from the pressure switch 216 if the pressure is too low and then ensuring automatic scavenging by a scavenging device. There is ATEX conformity here.
  • a third embodiment variant of a painting gas supply line system 301 is shown in a schematic view, a distributor 302 being connected to a third embodiment variant of a first pressure hose 351.
  • the description of the Figure 1 referenced. The correspond to the Figure 1 specified reference numerals each with the reference numerals of the increased by 200 Figure 3 .
  • a heating probe 310 is designed as a heating probe 313 heated by a liquid in the form of a heating hose 314.
  • a longitudinal axis L305 of a first neck 305 and a longitudinal axis L307 of a third neck 307 form a common longitudinal axis LA357 and a longitudinal axis L306 of the second neck 306 is arranged at right angles to the common longitudinal axis LA357 of the first and third necks 305, 307.
  • the heating probe 310 mentioned is integrated into a jacket M351 of the first pressure hose 351 and runs along it its longitudinal extension. Alternatively, it is also provided that the heating probe runs in a spiral shape in the direction of the longitudinal extension of the first pressure hose. In both embodiment variants, it can also be provided that the heating probe runs inside the jacket in an interior space of the first pressure hose.
  • the plug unit 304 and the connection piece 303 are designed in one piece as a component made from one material.
  • a non-return valve 380 is arranged in front of the above-mentioned paint spray gun (not shown) at an end 351b of the pressure hose 351 opposite the hose connection 311. This prevents ambient air from flowing in, e.g. via the spray gun, in a pressureless or weak state.
  • This backflow protection 380 also prevents compressed gas DG from flowing back against a flow direction x.
  • the distributor 301 also includes a regulator 381 for scavenging air, the regulator 381 receiving a signal from the pressure switch 316 if the pressure is too low and then ensuring automatic scavenging by a scavenging device. There is ATEX conformity here.
  • the first system 1.1 comprises a compressed gas source 2 for compressed gas 3.
  • the compressed gas 3 is moist compressed gas with a relative humidity of over 40%.
  • the system 1.1 comprises a first painting gas supply line system LZ1, which comprises a distributor 7 and a first pressure hose 4 and which can be designed in detail in accordance with one of the painting gas supply systems described above.
  • Annex 1.1 also includes a Spray gun 5 for spraying a paint and can, as shown, comprise a drainage station 6 for draining the pressure hose 4.
  • the pressure hose 4 is optionally connected to the paint spray gun 5 or to the drainage station 6 when the system 1.1 is in operation.
  • the pressure hose 4 can be drained by hand in that, before the start of a painting process, compressed air 3 is initially blown off through the paint gun 5 without supplying paint or paint.
  • the paint spray gun 5 is oriented in such a way that it is blown past a component to be painted (not shown).
  • the pressure hose 4 is connected to a breathing mask 23 via a T-piece. This can take place with the interposition of a breathing air preparation device 22.
  • the distributor 7 is arranged between the pressurized gas source 2 and the pressure hose 4 and is thus connected directly to the pressure hose 4.
  • the distributor 7 can either be connected to the compressed gas source 2 via a second pressure hose (not shown) or it can also be connected directly to the compressed gas source.
  • the distributor 7 comprises a connection piece 8 and a heating probe 9, the heating probe 9 extending from the connection piece 8 over a length L4 of the first pressure hose 4.
  • the first pressure hose 4 is connected with a first end 4a via the distributor 7 to the compressed gas source 2 and with a second end 4b optionally connected to the spray gun 5 or the drainage station 6. According to one not The second end of the pressure hose shown can also be connected to the spray gun and the drainage station via a T-piece.
  • the first pressure hose 4 comprises a hose coupling K4b at its second end 4b and for this purpose the paint spray gun 5 comprises a gun coupling K5 adapted to the hose coupling K4b and the drainage station 6 a coupling K6 adapted to the hose coupling K4b.
  • the drainage station 6 has a so-called "bleeding function", by means of which a continuous gas flow and thus continuous drainage of the first pressure hose 4 can be achieved when the painting function is inactive.
  • the heating probe 9 runs around the pressure hose 4 like a spiral and forms a hose heater.
  • This heating probe 9 can also according to the statements about the Figures 1 to 3 be designed as an internal heating probe 9 running in the pressure hose 4 or as a heating probe 9 embedded in a jacket of the pressure hose 4, not shown in any more detail in the schematic representation.
  • heating probe 9 heating can be carried out electrically, with heating gas or heating with hot water.
  • the heating probe is ATEX-compliant.
  • the one in the Figure 4 The first system 1.1 shown 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 comprises a non-return valve 20. This is arranged in a region of the second end 4b of the first pressure hose 4. This backflow protection 20 prevents compressed gas DG from flowing back into the pressure hose 4 against a flow direction x. Furthermore, the first system 1.1 comprises a pressure switch 16, by means of which a pressure in an interior of the pressure hose 4 is monitored. Furthermore, the first painting air supply line system LZ1 of the first system 1.1 can include a regulator 21 for rinsing air, the regulator 21 receiving a signal from the pressure switch 16 when the pressure is too low and then ensuring automatic rinsing by a rinsing device. The components of the first system 1.1 are in compliance with ATEX.
  • the second system 1.2 comprises a compressed gas source 2 for compressed gas 3.
  • the compressed gas 3 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 system 1.2 comprises a second painting gas supply line system LZ2, which comprises a distributor 7 and a first pressure hose 4 and which can be implemented in detail at least partially in accordance with one of the painting gas supply systems described above.
  • the second system 1.2 comprises a spray gun 5 for spraying a paint.
  • the pressure hose 4 is connected to the paint spray gun 5 when the second system 1.2 is in operation.
  • the pressure hose 4 is connected to a breathing mask 23 via a T-piece. This can take place with the interposition of a breathing air preparation device 22.
  • the pressure hose 4 can be drained by hand in that, before the start of a painting process, compressed air 3 is initially blown off through the paint gun 5 without supplying paint or paint.
  • the paint spray gun 5 is oriented in such a way that it is blown past a component to be painted (not shown).
  • the distributor 7 is arranged between the pressurized gas source 2 and the pressure hose 4 and is thus connected directly to the pressure hose 4.
  • the distributor 7 can either be connected to the compressed gas source 2 via a second pressure hose (not shown) or it can also be connected directly to the compressed gas source.
  • the distributor 7 comprises a connection piece 8 and a heating probe 9, the heating probe 9 extending from the connection piece 8 over a length L4 of the first pressure hose 4.
  • the first pressure hose 4 is connected with a first end 4a via the distributor 7 to the pressurized gas source 2 and with a second end 4b detachably connected to the paint spray gun 5.
  • the first pressure hose 4 comprises a hose coupling K4b at its second end 4b
  • the paint spray gun 5 comprises a gun coupling K5 adapted to the hose coupling K4b.
  • 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 4.
  • a jacket 4m, which forms the pressure hose 4 is made of a conductive material, in particular rubber.
  • the second system 1.2 thus has 72 ATEX conformity in a potentially explosive environment.
  • the system 1.2 has an ATEX conformity in accordance with pressurized encapsulation, with a level of protection pxb or pyb or pzc being achieved in particular.
  • the distributor 7 can at least in parts according to the description of the Figures 1 to 3 be executed.
  • the second system 1.2 comprises a non-return valve 20. This is arranged in a region of the second end 4b of the first pressure hose 4. Through this backflow protection 20 this prevents gas from flowing into the pressure hose 4 counter to a flow direction x, in particular via the spray gun 5. Furthermore, the painting air supply system LZ2 of the second system 1.2 comprises a pressure switch 16, which monitors a pressure prevailing in the interior 4i of the pressure hose 4 and, if the pressure drops below, for example 0.5 bar, both a shutdown of the heating probe 9 and a shutdown of a Ionization device 50 causes.
  • the ionization device 50 is shown in FIG Figure 5 shown only schematically and can alternatively be arranged both in front of the pressure hose 4 and in the pressure hose 4, as well as after the pressure hose 4.
  • the second system 1.2 comprises either a regulator 21 for scavenging air or a reset switch 51, so that, after the pressure switch has been switched off, the pressure hose 4 is either automatically rinsed and the second system 1.2 is automatically restarted or rinsing is carried out manually and the second system 1.2 is then restarted manually via the reset switch 51.
  • the compressed gas source can optionally provide at least one of the aforementioned and subsequent compressed gases.
  • 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 warm compressed air or compressed air enriched with nitrogen or warm compressed air or another compressed gas such as 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 using a corresponding switchover valve.
  • 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.

Landscapes

  • Details Or Accessories Of Spraying Plant Or Apparatus (AREA)
  • Nozzles (AREA)
EP20208800.1A 2019-11-21 2020-11-20 Système d'alimentation en gaz de peinture, installation de peinture et procédé de fonctionnement d'une installation de peinture Pending EP3842153A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102019131550 2019-11-21
DE102020109042.0A DE102020109042A1 (de) 2019-11-21 2020-04-01 Lackiergas-Zuleitungssystem, Anlage zum Lackieren und Verfahren zum Betrieb einer Anlage zum Lackieren

Publications (1)

Publication Number Publication Date
EP3842153A1 true EP3842153A1 (fr) 2021-06-30

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Application Number Title Priority Date Filing Date
EP20208800.1A Pending EP3842153A1 (fr) 2019-11-21 2020-11-20 Système d'alimentation en gaz de peinture, installation de peinture et procédé de fonctionnement d'une installation de peinture

Country Status (2)

Country Link
EP (1) EP3842153A1 (fr)
DE (2) DE102020109042A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4321260A1 (fr) * 2022-08-09 2024-02-14 Tiemo Sehon Installation de peinture et procédé de peinture d'un objet de peinture

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EP2893982A1 (fr) * 2014-01-13 2015-07-15 Gerhard Brendel Dispositif de laquage
WO2016030012A2 (fr) * 2014-08-26 2016-03-03 Sata Gmbh & Co. Kg Absorbeur à charbon actif
DE102017109932A1 (de) * 2017-05-09 2018-11-15 Herbert Hauptkorn Vorrichtung zur Befeuchtung von Druckluft
DE102017209353A1 (de) * 2017-06-01 2018-12-06 Lufthansa Technik Ag Vorrichtung und Verfahren zur Reparatur von Oberflächen in der Flugzeugkabine
DE102018118206A1 (de) * 2017-07-28 2019-01-31 Thomas Mayer Vorrichtung zur Bereitstellung von Druckgas an einer mit Druckgas arbeitenden Sprühvorrichtung, Verfahren zur Bereitstellung von Druckgas an einer mit Druckgas arbeitenden Sprühvorrichtung sowie Verfahren zum Versprühen eines flüssigen Mediums
DE102018129038A1 (de) 2018-07-23 2020-01-23 Thomas Mayer Druckluftbefeuchtung - Schlauchentwässerung

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US2833909A (en) * 1956-05-29 1958-05-06 Gustave S Levey Hose-type paint heater
DE3414284A1 (de) * 1984-04-14 1985-10-31 Heraeus-Wittmann Gmbh, 6450 Hanau Elektrisches heizelement fuer rohrleitungen, insbesondere fuer lange rohrleitungen
DE60214125T2 (de) * 2002-01-25 2007-02-22 Eurosider S.A.S. Di Milli Ottavio & C. Membranvorrichtung zur Behandlung eines Zuluftstroms für eine Spritzlackiereinrichtung
US20160053380A1 (en) * 2013-05-03 2016-02-25 United Technologies Corporation High temperature and high pressure portable gas heater
US20140361099A1 (en) * 2013-06-05 2014-12-11 Finishing Brands Holdings Inc. System and Method for Thermal Control of Flow Through a Conduit

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Publication number Priority date Publication date Assignee Title
EP2893982A1 (fr) * 2014-01-13 2015-07-15 Gerhard Brendel Dispositif de laquage
WO2016030012A2 (fr) * 2014-08-26 2016-03-03 Sata Gmbh & Co. Kg Absorbeur à charbon actif
DE102017109932A1 (de) * 2017-05-09 2018-11-15 Herbert Hauptkorn Vorrichtung zur Befeuchtung von Druckluft
DE102017209353A1 (de) * 2017-06-01 2018-12-06 Lufthansa Technik Ag Vorrichtung und Verfahren zur Reparatur von Oberflächen in der Flugzeugkabine
DE102018118206A1 (de) * 2017-07-28 2019-01-31 Thomas Mayer Vorrichtung zur Bereitstellung von Druckgas an einer mit Druckgas arbeitenden Sprühvorrichtung, Verfahren zur Bereitstellung von Druckgas an einer mit Druckgas arbeitenden Sprühvorrichtung sowie Verfahren zum Versprühen eines flüssigen Mediums
DE102018129038A1 (de) 2018-07-23 2020-01-23 Thomas Mayer Druckluftbefeuchtung - Schlauchentwässerung

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4321260A1 (fr) * 2022-08-09 2024-02-14 Tiemo Sehon Installation de peinture et procédé de peinture d'un objet de peinture

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