EP2441526A1 - Method and facility for cleaning a spraying circuit, in particular of paint, and for treating the chemical effluent generated - Google Patents

Method and facility for cleaning a spraying circuit, in particular of paint, and for treating the chemical effluent generated Download PDF

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Publication number
EP2441526A1
EP2441526A1 EP11184098A EP11184098A EP2441526A1 EP 2441526 A1 EP2441526 A1 EP 2441526A1 EP 11184098 A EP11184098 A EP 11184098A EP 11184098 A EP11184098 A EP 11184098A EP 2441526 A1 EP2441526 A1 EP 2441526A1
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EP
European Patent Office
Prior art keywords
paint
circuit
rinsing
treated effluent
ecosolvent
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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.)
Granted
Application number
EP11184098A
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German (de)
French (fr)
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EP2441526B1 (en
Inventor
Patrick Ballu
Philippe Briet
Philippe Poirier
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.)
Exel Industries SA
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Exel Industries SA
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Publication date
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Publication of EP2441526A1 publication Critical patent/EP2441526A1/en
Application granted granted Critical
Publication of EP2441526B1 publication Critical patent/EP2441526B1/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto 
    • B08B9/02—Cleaning pipes or tubes or systems of pipes or tubes
    • B08B9/027—Cleaning the internal surfaces; Removal of blockages
    • B08B9/032—Cleaning the internal surfaces; Removal of blockages by the mechanical action of a moving fluid, e.g. by flushing
    • B08B9/0321—Cleaning the internal surfaces; Removal of blockages by the mechanical action of a moving fluid, e.g. by flushing using pressurised, pulsating or purging fluid
    • B08B9/0325—Control mechanisms therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B15/00—Details of spraying plant or spraying apparatus not otherwise provided for; Accessories
    • B05B15/50—Arrangements for cleaning; Arrangements for preventing deposits, drying-out or blockage; Arrangements for detecting improper discharge caused by the presence of foreign matter
    • B05B15/55—Arrangements for cleaning; Arrangements for preventing deposits, drying-out or blockage; Arrangements for detecting improper discharge caused by the presence of foreign matter using cleaning fluids
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto 
    • B08B9/02—Cleaning pipes or tubes or systems of pipes or tubes
    • B08B9/027—Cleaning the internal surfaces; Removal of blockages

Definitions

  • the invention relates to a method of cleaning a spraying circuit, especially painting, and treatment of generated chemical effluents.
  • the invention also relates to a cleaning installation of a spraying circuit, typically painting, and treatment of generated chemical effluents.
  • the French company SPCB (Institutes Chimiques de Bretagne) manufactures and markets a water-soluble spray circuit water treatment system under the name ASPIFLOC.
  • the effluents to be treated are discharged to a storage tank for treatment comprising a stirring by compressed air to homogenize the coagulation and flocculation of the liquid elements and constitute a solid phase. restraint.
  • a storage tank for treatment comprising a stirring by compressed air to homogenize the coagulation and flocculation of the liquid elements and constitute a solid phase. restraint.
  • the contents of the storage tank for treatment is transferred into a filter bag retaining the solid phase and returning a decontaminated liquid phase.
  • the treated effluents leaving the retention bag of the solid phase are discharged to a final treated effluent storage tank, consisting essentially of a decontaminated aqueous liquid phase.
  • This ASPIFLOC system for treating water-soluble spray system rinsing water generally gives satisfaction, but nevertheless requires periodic consumption of water from the network to effect the rinsing of the water-soluble spray circuit.
  • a first object of the invention is to propose a new process for the treatment of chemical effluents, especially paint, which saves Consumption of water from the network by recycling treated effluent to clean and rinse the paint circuit.
  • a second object of the invention is to guide the operator performing the cleaning and treatment of a paint circuit, semi-automatically, guiding the operator to optimize the consumption of eco-solvents or products used for rinsing and to reduce the risk of accident, improper operation and contamination of the environment, operator and equipment.
  • a method for cleaning and treating chemical effluents, especially paint is preferably performed with the assistance of a programmable controller giving authorizations to proceed to the next step when the operating conditions tested are met.
  • step 100 the end of a painting process is observed by choice of the operator and validation of this choice on a terminal capable of controlling a programmable controller.
  • step 101 the decompression of the paint pump is stopped and controlled to depressurize the paint circuit.
  • step 102 the gun or spray means is connected in a sealed manner to a rinsing box, the supply cane is disconnected from the paint tank to which it is attached, and this rod is connected to a suitable connection. a cleaning tank.
  • the paint circuit is preferably pressurized with the aid of the paint pump, to purge the pipes to a waste container that can be isolated by an isolation valve.
  • step 104 the waste container is isolated and a rinse request is indicated to the programmable logic controller.
  • step 105 a test is performed to verify the leaktight connection of the circuit in a rinsing configuration and to avoid the risk of contamination of the outside of the rinsing circuit.
  • step 105 If the test of step 105 is negative, it is looped at step 102 to check the completeness of the rinsing circuit.
  • step 106 a level test of a treated effluent tank is carried out, making only, if necessary, a make-up of water of the network to obtain the desired level.
  • step 107 it is pumped from the treated effluent tank described in step 106, a filling of a cleaning tank to a predetermined level representative of a first predetermined volume V1 of treated effluent.
  • step 108 a pre-rinse request is issued on the PLC, after selecting the position of a two-way valve to direct the rinsed products to an ecosolvent container.
  • step 109 the integrity conditions of the pre-rinse circuit comprising the cleaning tank, the supply pipe, the paint pump, the spray pipe, the spray gun or the spray means are tested. flushing box and piping passing through the two-way valve to the ecosolvent container.
  • step 110 pre-rinse is conducted to the ecosolvent container for a short time corresponding to the circulation of one to two times the volume of the paint circuit.
  • step 111 an end of pre-rinse test is carried out by means of a suitable sensor, or after a predetermined duration measured by a counter or a clock of the programmable controller.
  • step 112 a request for a first treated effluent rinse is signaled to the operator, at the same time that the aforementioned two-way valve is switched to an effluent treatment station.
  • step 113 a test is performed to check the integrity of the rinsing circuit of the cleaning tank to the effluent treatment station. If the test is negative, loop to step 112.
  • step 114 a first rinse using volume V1 of treated effluent charged to the cleaning tank at step 107 is made to the treatment station, via the feed rod, painting, the circuit of spraying, spray gun or spraying means, flushing box, two-way valve and corresponding conduit.
  • step 115 an end-of-rinse test at the treated effluent is carried out. If the test is negative, it is looped at step 114.
  • step 116 a request for a second ecosolvent rinse is reported, at the same time as a cleaning tank level test is performed to ascertain the use of treated effluent volume V1.
  • step 117 the cleaning tank is filled with a volume V 2 of ecosolvent, and the two-way valve is tilted towards the ecosolvent container to establish an ecosolvent rinsing circuit.
  • step 118 a test is made of the integrity conditions of the rinsing circuit by ecosolvent. If the test is negative, it is looped at step 117.
  • step 119 a second ecosolvent rinse is performed using the volume V2 of ecosolvent charged at step 117.
  • the volume V 2 of ecosolvent extracted from the ecosolvent container in step 117 thus refills the ecosolvent container from which it was extracted, after rinsing the paint circuit through the gun or connected spraying means. in a sealed manner to the rinsing box.
  • step 121 a third rinse request is made using a treated effluent.
  • a level test of the cleaning tank is carried out to ensure the good flow of the volume V2 of ecosolvent used in the previous steps of second rinse ecosolvent.
  • step 122 the cleaning tank is filled with a third predetermined volume V3 of treated effluent and the two-way valve is oriented towards the ecosolvent container.
  • step 123 a test is made of the conditions of the pre-rinse circuit in treated effluent. If the test is negative, it is looped at step 122.
  • step 124 treated process effluent pre-rinse is performed for a short time corresponding to the flow of one to two times the volume of the paint circuit, to the ecosolvent container.
  • a pre-rinse completion test is performed by appropriate sensors, or after a predetermined time set by an internal timer or timebase of the programmable logic controller.
  • step 126 a request for a third treated effluent rinse is reported and a selection of the two-way valve is made to direct it to an effluent treatment station.
  • step 127 a test of the integrity conditions of the third effluent rinsing circuit treated is performed to check the circuit leaving the cleaning tank, the suction pipe, the paint pump, the circuit of spraying comprising the spray gun or means for spraying through the flushing box through the two-way valve to an effluent storage container to be treated from the treatment station. If the test is negative, it is looped at step 126.
  • step 1208 a third rinse of the paint circuit is performed using the third predetermined volume V3 of treated effluent to circulate it to the treatment station.
  • step 129 a treated effluent-based third rinse-end test is performed to check the consumption of the predetermined volume V3 of treated effluent placed in the tank at step 122. If the test is negative, it is looped at step 108.
  • step 130 an operational test of the cleaned paint circuit is performed in step 130 by the programmable controller to determine the next steps. If no order is given by the operator by acknowledging a push button, proceed to step 131 end of the process.
  • step 130 If a re-painting order is given by the operator after step 130, proceed to step 132 of the request for tinting.
  • the operator When applying for tinting, the operator must connect the supply rod to a paint tank of the desired shade, and must connect the spray system to the gun to a garbage container.
  • step 133 a connection condition test is performed to verify that the supply rod is properly in place on its paint tank and that the spray gun is securely in place on the waste container. If the test is negative, it is looped at step 132.
  • test proceeds to the staining step 134 corresponding to a sufficient spraying time to fill the paint spraying circuit with the desired hue.
  • step 134 After the tinting operation of step 134, an end-of-tint test is performed at step 135. If the test is negative, it is looped at step 134. If the test is positive the process is terminated at step 131 at the end of the process.
  • the paint installation is then ready to be used for new water-soluble paint spraying operations.
  • the invention described with reference to a particular installation for cleaning and treating paint effluents also extends to the cases of multiple feed rods isolated or not by selective connections or by isolation valves allowing a selective feeding of the paint pump, a rinse or any other operation of implementation of the invention.
  • an installation for cleaning a spraying circuit, in particular for painting, and for treating the chemical effluents generated according to the invention comprises a cleaning tank (1) provided with appropriate sensors (not shown), for measuring the levels corresponding to volumes. predetermined V1 and V3 treated effluent, or V2 ecosolvent.
  • the installation also comprises a three-way valve (2) for selective orientation of a rinsing circuit to an ecosolvent container (3) or an effluent container (4a) to be treated.
  • the container (4a) of effluent to be treated is part of a treatment station (4) also comprising a filtration bag (4b) and a tank (4c) treated effluent.
  • the treated effluent tank (4c) of the treatment station (4) is connected to a pump (5) for feeding the cleaning tank (1).
  • the container (3) ecosolvent is associated with a pump (6) for feeding the tank (1) cleaning.
  • a rinsing box (7) is provided for the sealed connection of a spray gun (10) connected by a spray line (11) to a pump (12) fed by a pipe (13) connected to a rod of power supply (14).
  • a non-recyclable waste container (8) can be fed, via an isolable pipe via an isolation valve (9), to collect the waste at the beginning of cleaning.
  • the cleaning tank (1) preferably comprises a glove finger (1a) for sealing connection of the supply rod (14) of the paint circuit.
  • the effluent treatment station (4) is advantageously a processing station manufactured and marketed under the name ASPIFLOC by the Brittany Chemicals Company (SPCB) and does not require a more detailed description.
  • a not shown programmable controller advantageously comprises program code instructions representative of the steps of the method shown and described with reference to FIG. figure 1 .
  • the method can be fully automated, can be semi-automatic, or can be a series of authorized manual operations after acknowledging defects corresponding in particular to negative tests.
  • the treatment station (4) can be combined with one or more paint installations each associated with its own cleaning tank, through the use of appropriate switching, distribution and selection valves, in accordance with a known practice of the skilled person.
  • the invention also extends to the case of paint circuits for large bodies, for example heavy goods vehicles or rolling stock on railway, including a painting facility on the right of the circulating equipment and a painting installation on the left of the circulating equipment.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Details Or Accessories Of Spraying Plant Or Apparatus (AREA)
  • Coating Apparatus (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)

Abstract

The method involves preparing and purging a suction line of a paint pump (5) and rinsing a paint circuit by using volume of predetermined treated effluent. The paint circuit is rinsed by using predetermined volume of ecosolvent and by using predetermined volume of treated effluent so as to save water consumption of a network by recycling the treated effluent for cleaning and rinsing the paint circuit. A spray gun (10) or spraying unit is connected to a rinsing case (7), and a suction unit or tube is disconnected. An independent claim is also included for an installation unit for cleaning and treating chemical effluents i.e. paint, comprising a preparation and purging unit.

Description

L'invention est relative à un procédé de nettoyage d'un circuit de pulvérisation, notamment de peinture, et de traitement des effluents chimiques générés.The invention relates to a method of cleaning a spraying circuit, especially painting, and treatment of generated chemical effluents.

L'invention est également relative à une installation de nettoyage d'un circuit de pulvérisation, typiquement de peinture, et de traitement des effluents chimiques générés.The invention also relates to a cleaning installation of a spraying circuit, typically painting, and treatment of generated chemical effluents.

Le document US 5 699 817 décrit un appareillage de nettoyage de conduites par circulation turbulente.The document US 5,699,817 describes a device for cleaning pipes by turbulent circulation.

Le document US 5 882 428 décrit un procédé de rinçage de système de circulation utilisant des poussoirs de nettoyage.The document US 5,882,428 discloses a circulating system rinsing process using cleaning pusher.

La société de droit français SPCB (Société des Produits Chimiques de Bretagne) fabrique et commercialise un système de traitement des eaux de rinçage de circuit de pulvérisation hydrosoluble sous l'appellation ASPIFLOC.The French company SPCB (Société des Produits Chimiques de Bretagne) manufactures and markets a water-soluble spray circuit water treatment system under the name ASPIFLOC.

Dans ce système ASPIFLOC de traitement des eaux de rinçage de circuit de pulvérisation hydrosoluble, les effluents à traiter sont évacués vers une cuve de stockage pour traitement comportant une agitation par air comprimé pour homogénéiser la coagulation et la floculation des éléments liquides et constituer une phase solide de retenue. Après coagulation et floculation des effluents, le contenu du bac de stockage pour traitement est transféré dans un sac de filtrage retenant la phase solide et restituant une phase liquide décontaminée. Les effluents traités sortant du sac de rétention de la phase solide sont évacués vers un bac de stockage final d'effluents traités, constitué pratiquement en totalité de phase liquide aqueuse décontaminée.In this ASPIFLOC system for treating water-soluble spray circuit rinsing water, the effluents to be treated are discharged to a storage tank for treatment comprising a stirring by compressed air to homogenize the coagulation and flocculation of the liquid elements and constitute a solid phase. restraint. After coagulation and flocculation of the effluents, the contents of the storage tank for treatment is transferred into a filter bag retaining the solid phase and returning a decontaminated liquid phase. The treated effluents leaving the retention bag of the solid phase are discharged to a final treated effluent storage tank, consisting essentially of a decontaminated aqueous liquid phase.

Ce système ASPIFLOC de traitement des eaux de rinçage de circuit de pulvérisation hydrosoluble donne généralement satisfaction, mais nécessite cependant une consommation périodique d'eau du réseau pour effectuer le rinçage du circuit de pulvérisation hydrosoluble.This ASPIFLOC system for treating water-soluble spray system rinsing water generally gives satisfaction, but nevertheless requires periodic consumption of water from the network to effect the rinsing of the water-soluble spray circuit.

Un premier but de l'invention est de proposer un nouveau procédé de traitement des effluents chimiques, notamment de peinture, permettant d'économiser la consommation d'eau du réseau en recyclant l'effluent traité pour nettoyer et rincer le circuit de peinture.A first object of the invention is to propose a new process for the treatment of chemical effluents, especially paint, which saves Consumption of water from the network by recycling treated effluent to clean and rinse the paint circuit.

Un deuxième but de l'invention est de guider l'opérateur effectuant le nettoyage et le traitement d'un circuit de peinture, de manière semi-automatique, en guidant l'opérateur pour optimiser la consommation des écosolvants ou produits utilisés pour le rinçage et pour limiter les risques d'accident, de mauvaise opération et de contamination de l'environnement, de l'opérateur et du matériel.A second object of the invention is to guide the operator performing the cleaning and treatment of a paint circuit, semi-automatically, guiding the operator to optimize the consumption of eco-solvents or products used for rinsing and to reduce the risk of accident, improper operation and contamination of the environment, operator and equipment.

L'invention a pour objet un procédé de nettoyage d'un circuit de pulvérisation, notamment de peinture, et de traitement des effluents chimiques générés comportant les étapes suivantes :

  1. a) préparation et purge de la ligne d'aspiration de pompe à peinture ;
  2. b) premier rinçage du circuit de peinture à l'aide d'un premier volume prédéterminé d'effluent traité ;
  3. c) deuxième rinçage du circuit de peinture à l'aide d'un deuxième volume prédéterminé d' écosolvant ;
  4. d) troisième rinçage du circuit de peinture à l'aide d'un troisième volume prédéterminé d'effluent traité ;
de manière à économiser la consommation d'eau du réseau en recyclant l'effluent traité pour nettoyer et rincer le circuit de peinture.The subject of the invention is a method of cleaning a spraying circuit, in particular a paint circuit, and treating the chemical effluents generated comprising the following steps:
  1. a) preparing and purging the paint pump suction line;
  2. b) first rinsing the paint circuit with a first predetermined volume of treated effluent;
  3. c) flushing the paint circuit with a second predetermined volume of ecosolvent;
  4. d) third flushing of the paint circuit with a third predetermined volume of treated effluent;
in order to save the water consumption of the network by recycling the treated effluent to clean and rinse the paint circuit.

Selon d'autres caractéristiques alternatives de l'invention :

  • L'étape de préparation et purge de la ligne d'aspiration de pompe à peinture comporte un branchement d'un pistolet ou moyen de pulvérisation à un boîtier de rinçage, une déconnexion d'un moyen d'aspiration ou canne d'aspiration, et une éjection des déchets par la pompe à peinture vers un conteneur à déchets.
  • On peut utiliser plusieurs moyens ou cannes d'aspiration associés à des moyens ou vannes d'isolation pour mettre en oeuvre un procédé selon l'invention.
  • L'étape de premier rinçage du circuit de peinture à l'aide d'un premier volume prédéterminé d'effluent traité comporte avantageusement un remplissage d'une cuve de nettoyage avec un premier volume prédéterminé d'effluent traité, un prérinçage du circuit de peinture à travers le moyen ou pistolet de pulvérisation vers un conteneur d'écosolvant, et un rinçage du circuit de peinture à travers le moyen ou pistolet de pulvérisation vers une station de traitement d'effluents.
  • L'étape de deuxième rinçage du circuit de peinture à l'aide d'un deuxième volume prédéterminé d'écosolvant comporte avantageusement un remplissage d'une cuve de nettoyage avec un deuxième volume prédéterminé d'écosolvant, un rinçage du circuit de peinture à travers le moyen ou pistolet de pulvérisation vers un conteneur d'écosolvant.
  • L'étape de troisième rinçage du circuit de peinture à l'aide d'un troisième volume prédéterminé d'effluent traité comporte avantageusement un remplissage d'une cuve de nettoyage avec un troisième volume prédéterminé d'effluent traité, un prérinçage du circuit de peinture à travers le moyen ou pistolet de pulvérisation vers un conteneur d'écosolvant et un rinçage du circuit de peinture à travers le moyen ou pistolet de pulvérisation vers une station de traitement d'effluent.
  • Le procédé selon l'invention peut avantageusement comporter une étape additionnelle de montée en teinte du circuit de peinture par éjection vers un conteneur à déchets jusqu'à obtention de la teinte désirée.
According to other alternative features of the invention:
  • The step of preparing and purging the paint pump suction line comprises a connection of a spray gun or means to a rinsing box, a disconnection of a suction means or suction rod, and ejection of waste by the paint pump to a waste container.
  • Several means or suction rods associated with isolation means or valves can be used to implement a method according to the invention.
  • The first rinsing step of the paint circuit using a first predetermined volume of treated effluent advantageously comprises a filling of a cleaning tank with a first predetermined volume of treated effluent, a pre-rinse of the paint circuit. through the spray gun or medium to an ecosolvent container, and flushing the paint circuit through the spray gun or medium to an effluent treatment station.
  • The second rinsing step of the paint circuit using a second predetermined volume of ecosolvent advantageously comprises a filling of a cleaning tank with a second predetermined volume of ecosolvent, a rinsing of the paint circuit through the means or spray gun to an ecosolvent container.
  • The third rinsing step of the paint circuit using a third predetermined volume of treated effluent advantageously comprises a filling of a cleaning tank with a third predetermined volume of treated effluent, a pre-rinse of the paint circuit. through the spray gun means or spray to an ecosolvent container and rinsing the paint circuit through the spray gun means or spray gun to an effluent treatment station.
  • The method according to the invention may advantageously comprise an additional step of tinting the paint circuit by ejection to a waste container until the desired color is obtained.

L'invention a également pour objet une installation de nettoyage d'un circuit de pulvérisation notamment de peinture, et de traitement des effluents chimiques générés, comportant :

  1. a) des moyens de préparation et de purge de la ligne d'aspiration de pompe à peinture ;
  2. b) des moyens de premier rinçage du circuit de peinture à l'aide d'un premier volume prédéterminé d'effluent traité ;
  3. c) des moyens de deuxième rinçage du circuit de peinture à l'aide d'un deuxième volume prédéterminé d' écosolvant ;
  4. d) des moyens de troisième rinçage du circuit de peinture à l'aide d'un troisième volume prédéterminé d'effluent traité ;
de manière à économiser la consommation d'eau du réseau en recyclant l'effluent traité pour nettoyer et rincer le circuit de peinture.The subject of the invention is also an installation for cleaning a spraying circuit, especially for painting, and for treating the chemical effluents generated, comprising:
  1. a) means for preparing and purging the paint pump suction line;
  2. b) means for first rinsing the paint circuit with a first predetermined volume of treated effluent;
  3. c) second rinsing means of the paint circuit with a second predetermined volume of ecosolvent;
  4. d) means for third rinsing of the paint circuit with a third predetermined volume of treated effluent;
in order to save the water consumption of the network by recycling the treated effluent to clean and rinse the paint circuit.

Selon d'autres caractéristiques alternatives de l'invention :

  • Les moyens de préparation et purge de la ligne d'aspiration de pompe à peinture comportent un boîtier de rinçage équipé de moyen de branchement d'un pistolet ou moyen de pulvérisation, un conteneur à déchets et une vanne d'isolation et d'éjection des déchets par la pompe à peinture vers le conteneur à déchets.
  • On peut utiliser avantageusement plusieurs moyens ou cannes d'aspiration associés à des moyens ou vannes d'isolation pour une communication sélective vers la pompe à peinture.
  • L'installation selon l'invention comporte avantageusement au moins une cuve de nettoyage apte à être remplie avec des volumes prédéterminés d'effluents traités ou d'écosolvants, pour rincer le circuit de peinture à travers le moyen ou pistolet de pulvérisation vers une destination appropriée.
  • L'installation comporte avantageusement une station de traitement constituée d'une cuve de stockage pour traitement avec agitation, d'un sac de filtration de phase solide et d'un conteneur d'effluents traités.
  • L'installation de traitement est avantageusement pilotée par une logique ou un automate programmable assurant un guidage pas à pas de l'opérateur pour éviter les risques de mauvaise opération et les accidents de matériel et de personnel pouvant en résulter.
According to other alternative features of the invention:
  • The means for preparing and purging the paint pump suction line comprise a rinsing box equipped with means for connecting a spray gun or a spraying means, a waste container and an isolation and ejection valve. waste by the paint pump to the waste container.
  • Several means or suction rods associated with insulation means or valves can be advantageously used for selective communication with the paint pump.
  • The plant according to the invention advantageously comprises at least one cleaning tank capable of being filled with predetermined volumes of treated effluents or of eco-solvents for rinsing the paint circuit through the spray gun or means to an appropriate destination. .
  • The installation advantageously comprises a treatment station consisting of a storage tank for treatment with stirring, a solid phase filtration bag and a treated effluent container.
  • The processing installation is advantageously controlled by a logic or a programmable controller providing step-by-step guidance of the operator to avoid the risk of misoperation and accidents of equipment and personnel that may result.

L'invention sera mieux comprise grâce à la description qui va suivre donnée à titre d'exemple non limitatif en référence aux dessins annexés dans lesquels :

  • La figure 1 représente schématiquement un organigramme de procédé de nettoyage et de traitement des effluents chimiques, notamment de peinture, selon l'invention.
  • La figure 2 représente schématiquement un circuit d'installation de nettoyage et de traitement des effluents chimiques, notamment de peinture, selon l'invention.
The invention will be better understood from the following description given by way of nonlimiting example with reference to the accompanying drawings in which:
  • The figure 1 schematically represents a process flow diagram for cleaning and treatment of chemical effluents, especially paint, according to the invention.
  • The figure 2 schematically represents an installation circuit cleaning and treatment of chemical effluents, including paint, according to the invention.

En référence à la figure 1, un procédé de nettoyage et de traitement des effluents chimiques, notamment de peinture, est de préférence exécuté avec assistance d'un automate programmable donnant des autorisations pour passer à l'étape suivante lorsque les conditions de fonctionnement testées sont respectées.With reference to the figure 1 a method for cleaning and treating chemical effluents, especially paint, is preferably performed with the assistance of a programmable controller giving authorizations to proceed to the next step when the operating conditions tested are met.

À l'étape 100, la fin d'un procédé de peinture est constatée par choix de l'opérateur et validation de ce choix sur un terminal apte à commander un automate programmable.In step 100, the end of a painting process is observed by choice of the operator and validation of this choice on a terminal capable of controlling a programmable controller.

À l'étape 101, on arrête et on commande la décompression de la pompe de peinture pour dépressuriser le circuit de peinture.At step 101, the decompression of the paint pump is stopped and controlled to depressurize the paint circuit.

À l'étape 102, on connecte le pistolet ou moyen de pulvérisation de manière étanche à un boîtier de rinçage, on déconnecte la canne d'alimentation du réservoir de peinture sur lequel elle est fixée et on connecte cette canne sur une connexion appropriée d'une cuve de nettoyage.In step 102, the gun or spray means is connected in a sealed manner to a rinsing box, the supply cane is disconnected from the paint tank to which it is attached, and this rod is connected to a suitable connection. a cleaning tank.

À l'étape 103, on pressurise le circuit de peinture de préférence à l'aide de la pompe à peinture, pour effectuer une purge des tuyauteries vers un conteneur à déchets apte à être isolé par une vanne d'isolation.In step 103, the paint circuit is preferably pressurized with the aid of the paint pump, to purge the pipes to a waste container that can be isolated by an isolation valve.

À l'étape 104, on isole le conteneur à déchets et on indique à l'automate programmable une demande de rinçage.In step 104, the waste container is isolated and a rinse request is indicated to the programmable logic controller.

À l'étape 105, un test est effectué pour vérifier le branchement étanche du circuit selon une configuration de rinçage et pour éviter les risques de contamination de l'extérieur du circuit de rinçage.In step 105, a test is performed to verify the leaktight connection of the circuit in a rinsing configuration and to avoid the risk of contamination of the outside of the rinsing circuit.

Si le test de l'étape 105 est négatif, on boucle à l'étape 102 pour vérifier l'intégralité du circuit de rinçage.If the test of step 105 is negative, it is looped at step 102 to check the completeness of the rinsing circuit.

À l'étape 106, on effectue un test de niveau d'une cuve d'effluent traité, en effectuant, seulement si nécessaire, un appoint d'eau du réseau pour obtenir le niveau désiré.In step 106, a level test of a treated effluent tank is carried out, making only, if necessary, a make-up of water of the network to obtain the desired level.

À l'étape 107, on effectue par pompage, depuis la cuve d'effluent traité décrite à l'étape 106, un remplissage d'une cuve de nettoyage jusqu'à atteindre un niveau prédéterminé représentatif d'un premier volume prédéterminé V1 d' effluent traité.In step 107, it is pumped from the treated effluent tank described in step 106, a filling of a cleaning tank to a predetermined level representative of a first predetermined volume V1 of treated effluent.

À l'étape 108, une demande de prérinçage est lancée sur l'automate programmable, après avoir sélectionné la position d'une vanne à deux voies pour diriger les produits rincés vers un conteneur d'écosolvant.In step 108, a pre-rinse request is issued on the PLC, after selecting the position of a two-way valve to direct the rinsed products to an ecosolvent container.

À l'étape 109, on effectue un test des conditions d'intégrité du circuit de prérinçage comportant la cuve de nettoyage, la canne d'alimentation, la pompe de peinture, la tuyauterie de pulvérisation jusqu'au pistolet ou moyen de pulvérisation, le boîtier de rinçage et la tuyauterie passant par la vanne deux voies jusqu'au conteneur d'écosolvant.In step 109, the integrity conditions of the pre-rinse circuit comprising the cleaning tank, the supply pipe, the paint pump, the spray pipe, the spray gun or the spray means are tested. flushing box and piping passing through the two-way valve to the ecosolvent container.

À l'étape 110, on effectue un prérinçage en direction du conteneur d'écosolvant pendant une courte durée correspondant à la circulation d'une à deux fois le volume du circuit de peinture.In step 110, pre-rinse is conducted to the ecosolvent container for a short time corresponding to the circulation of one to two times the volume of the paint circuit.

À l'étape 111, on effectue un test de fin de prérinçage au moyen d'un capteur approprié, ou après une durée prédéterminée mesurée par un compteur ou une horloge de l'automate programmable.In step 111, an end of pre-rinse test is carried out by means of a suitable sensor, or after a predetermined duration measured by a counter or a clock of the programmable controller.

À l'étape 112, une demande de premier rinçage en effluent traité est signalée à l'opérateur, en même temps que la vanne à deux voies précitée est commutée vers une station de traitement d'effluents.In step 112, a request for a first treated effluent rinse is signaled to the operator, at the same time that the aforementioned two-way valve is switched to an effluent treatment station.

À l'étape 113, un test est effectué pour vérifier l'intégrité du circuit de rinçage de la cuve de nettoyage jusqu'à la station de traitement d'effluents. Si le test est négatif, on boucle à l'étape 112.In step 113, a test is performed to check the integrity of the rinsing circuit of the cleaning tank to the effluent treatment station. If the test is negative, loop to step 112.

À l'étape 114, un premier rinçage utilisant le volume V1 d'effluent traité chargé dans la cuve de nettoyage à l'étape 107 est effectué en direction de la station de traitement, en passant par la canne d'alimentation, la pompe de peinture, le circuit de pulvérisation, le pistolet ou moyen de pulvérisation, le boîtier de rinçage, la vanne deux voies et le conduit correspondant.In step 114, a first rinse using volume V1 of treated effluent charged to the cleaning tank at step 107 is made to the treatment station, via the feed rod, painting, the circuit of spraying, spray gun or spraying means, flushing box, two-way valve and corresponding conduit.

À l'étape 115, un test de fin de rinçage à l'effluent traité est effectué. Si le test est négatif, on boucle à l'étape 114.In step 115, an end-of-rinse test at the treated effluent is carried out. If the test is negative, it is looped at step 114.

À l'étape 116, une demande de deuxième rinçage par écosolvant est signalée, en même temps qu'un test du niveau de la cuve de nettoyage est effectué pour s'assurer de l'utilisation du volume V1 d'effluent traité.In step 116, a request for a second ecosolvent rinse is reported, at the same time as a cleaning tank level test is performed to ascertain the use of treated effluent volume V1.

À l'étape 117, on remplit la cuve de nettoyage avec un volume V2 d'écosolvant, et on bascule la vanne à deux voies en direction du conteneur d'écosolvant pour établir un circuit de rinçage à l'écosolvant.In step 117, the cleaning tank is filled with a volume V 2 of ecosolvent, and the two-way valve is tilted towards the ecosolvent container to establish an ecosolvent rinsing circuit.

À l'étape 118, on effectue un test des conditions d'intégrité du circuit de rinçage en écosolvant. Si le test est négatif, on boucle à l'étape 117.In step 118, a test is made of the integrity conditions of the rinsing circuit by ecosolvent. If the test is negative, it is looped at step 117.

À l'étape 119, on effectue un deuxième rinçage en écosolvant en utilisant le volume V2 d'écosolvant chargé à l'étape 117.In step 119, a second ecosolvent rinse is performed using the volume V2 of ecosolvent charged at step 117.

Le volume V2 d'écosolvant extrait du conteneur d'écosolvant à l'étape 117 vient ainsi remplir à nouveau le conteneur d'écosolvant d'où il a été extrait, après rinçage du circuit de peinture à travers le pistolet ou moyen de pulvérisation connecté de manière étanche au boîtier de rinçage.The volume V 2 of ecosolvent extracted from the ecosolvent container in step 117 thus refills the ecosolvent container from which it was extracted, after rinsing the paint circuit through the gun or connected spraying means. in a sealed manner to the rinsing box.

À l'étape 121, une demande de troisième rinçage est effectuée en utilisant un effluent traité. Un test de niveau de la cuve de nettoyage est effectué pour s'assurer du bon écoulement du volume V2 d'écosolvant utilisé aux étapes précédentes de deuxième rinçage en écosolvant.In step 121, a third rinse request is made using a treated effluent. A level test of the cleaning tank is carried out to ensure the good flow of the volume V2 of ecosolvent used in the previous steps of second rinse ecosolvent.

À l'étape 122, on remplit la cuve de nettoyage avec un troisième volume V3 prédéterminé d'effluent traité et on oriente la vanne deux voies en direction du conteneur d'écosolvant.In step 122, the cleaning tank is filled with a third predetermined volume V3 of treated effluent and the two-way valve is oriented towards the ecosolvent container.

À l'étape 123, on effectue un test des conditions du circuit de prérinçage en effluent traité. Si le test est négatif, on boucle à l'étape 122.In step 123, a test is made of the conditions of the pre-rinse circuit in treated effluent. If the test is negative, it is looped at step 122.

À l'étape 124, on effectue un prérinçage en effluent traité du circuit de peinture pendant une durée courte correspondant à l'écoulement d'une à deux fois le volume du circuit de peinture, en direction du conteneur d'écosolvant.In step 124, treated process effluent pre-rinse is performed for a short time corresponding to the flow of one to two times the volume of the paint circuit, to the ecosolvent container.

À l'étape 125, un test de fin de prérinçage est effectué par des capteurs appropriés, ou après une durée prédéterminée fixée à l'aide d'un compteur ou d'une base de temps interne de l'automate programmable.In step 125, a pre-rinse completion test is performed by appropriate sensors, or after a predetermined time set by an internal timer or timebase of the programmable logic controller.

À l'étape 126, une demande de troisième rinçage en effluent traité est signalée et une sélection de la vanne deux voies est effectuée pour l'orienter vers une station de traitement d'effluents.In step 126, a request for a third treated effluent rinse is reported and a selection of the two-way valve is made to direct it to an effluent treatment station.

À l'étape 127, un test des conditions d'intégrité du circuit de troisième rinçage en effluent traité est effectué pour vérifier le circuit partant de la cuve de nettoyage, de la canne d'aspiration, de la pompe de peinture, du circuit de pulvérisation comprenant le pistolet ou moyen de pulvérisation à travers le boîtier de rinçage en passant par la vanne deux voies jusqu'à un conteneur de stockage d'effluents à traiter de la station de traitement. Si le test est négatif, on boucle à l'étape 126.In step 127, a test of the integrity conditions of the third effluent rinsing circuit treated is performed to check the circuit leaving the cleaning tank, the suction pipe, the paint pump, the circuit of spraying comprising the spray gun or means for spraying through the flushing box through the two-way valve to an effluent storage container to be treated from the treatment station. If the test is negative, it is looped at step 126.

À l'étape 128, on effectue un troisième rinçage du circuit de peinture en utilisant le troisième volume prédéterminé V3 d'effluent traité pour le faire circuler jusqu'à la station de traitement.In step 128, a third rinse of the paint circuit is performed using the third predetermined volume V3 of treated effluent to circulate it to the treatment station.

À l'étape 129, on effectue un test de fin de troisième rinçage à base d'effluent traité pour vérifier la consommation du volume V3 prédéterminé d'effluent traité placé la cuve à l'étape 122. Si le test est négatif, on boucle à l'étape 108.In step 129, a treated effluent-based third rinse-end test is performed to check the consumption of the predetermined volume V3 of treated effluent placed in the tank at step 122. If the test is negative, it is looped at step 108.

Après la fin du troisième rinçage, un test opératoire du circuit de peinture nettoyé est effectué à l'étape 130 par l'automate programmable pour déterminer la suite des opérations. Si aucun ordre n'est donné par l'opérateur par acquittement d'un bouton poussoir, on passe à l'étape 131 de fin de procédé.After the end of the third rinse, an operational test of the cleaned paint circuit is performed in step 130 by the programmable controller to determine the next steps. If no order is given by the operator by acknowledging a push button, proceed to step 131 end of the process.

Si un ordre de remise en peinture est donné par l'opérateur après l'étape 130, on passe à l'étape 132 de demande de mise en teinte. Lors de la demande de mise en teinte, l'opérateur doit connecter la canne d'alimentation à un réservoir de peinture de la teinte désirée, et doit connecter le circuit de pulvérisation jusqu'au pistolet à un conteneur à déchets.If a re-painting order is given by the operator after step 130, proceed to step 132 of the request for tinting. When applying for tinting, the operator must connect the supply rod to a paint tank of the desired shade, and must connect the spray system to the gun to a garbage container.

À l'étape 133, un test des conditions de connexion est effectué pour vérifier que la canne d'alimentation est bien en place sur son réservoir de peinture et que le pistolet de pulvérisation est bien en place sur le conteneur à déchets. Si le test est négatif, on boucle à l'étape 132.In step 133, a connection condition test is performed to verify that the supply rod is properly in place on its paint tank and that the spray gun is securely in place on the waste container. If the test is negative, it is looped at step 132.

Si le test est positif, on passe à l'étape 134 de mise en teinte correspondant à une durée de pulvérisation suffisante pour remplir le circuit de pulvérisation de peinture de la teinte désirée.If the test is positive, it proceeds to the staining step 134 corresponding to a sufficient spraying time to fill the paint spraying circuit with the desired hue.

Après l'opération de mise en teinte de l'étape 134, on passe à un test de fin de mise en teinte à l'étape 135. Si le test est négatif, on boucle à l'étape 134. Si le test est positif, on termine le procédé à l'étape 131 de fin de procédé.After the tinting operation of step 134, an end-of-tint test is performed at step 135. If the test is negative, it is looped at step 134. If the test is positive the process is terminated at step 131 at the end of the process.

L'installation de peinture est alors prête à être utilisée pour de nouvelles opérations de pulvérisation de peinture hydrosoluble.The paint installation is then ready to be used for new water-soluble paint spraying operations.

L'invention décrite en référence à une installation particulière de nettoyage et de traitement des effluents de peinture s'étend également aux cas de cannes d'alimentation multiples isolées ou non par des connexions sélectives ou par des vannes d'isolation permettant une alimentation sélective de la pompe à peinture, un rinçage ou toute autre opération de mise en oeuvre de l'invention.The invention described with reference to a particular installation for cleaning and treating paint effluents also extends to the cases of multiple feed rods isolated or not by selective connections or by isolation valves allowing a selective feeding of the paint pump, a rinse or any other operation of implementation of the invention.

En référence à la figure 2, une installation de nettoyage d'un circuit de pulvérisation, notamment de peinture, et de traitement des effluents chimiques générés selon l'invention comporte une cuve (1) de nettoyage munie de capteurs appropriés non représentés, pour mesurer les niveaux correspondant à des volumes prédéterminés V1 et V3 d'effluent traité, ou V2 d'écosolvant.With reference to the figure 2 , an installation for cleaning a spraying circuit, in particular for painting, and for treating the chemical effluents generated according to the invention comprises a cleaning tank (1) provided with appropriate sensors (not shown), for measuring the levels corresponding to volumes. predetermined V1 and V3 treated effluent, or V2 ecosolvent.

L'installation comporte également une vanne (2) à trois voies permettant une orientation sélective d'un circuit de rinçage vers un conteneur (3) d'écosolvant ou un conteneur (4a) d'effluent à traiter.The installation also comprises a three-way valve (2) for selective orientation of a rinsing circuit to an ecosolvent container (3) or an effluent container (4a) to be treated.

Le conteneur (4a) d'effluent à traiter fait partie d'une station de traitement (4) comportant également un sac de filtration (4b) et une cuve (4c) d'effluent traité.The container (4a) of effluent to be treated is part of a treatment station (4) also comprising a filtration bag (4b) and a tank (4c) treated effluent.

La cuve (4c) d'effluent traité de la station de traitement (4) est reliée à une pompe (5) permettant d'alimenter la cuve de nettoyage (1).The treated effluent tank (4c) of the treatment station (4) is connected to a pump (5) for feeding the cleaning tank (1).

Le conteneur (3) d'écosolvant est associé à une pompe (6) permettant d'alimenter la cuve (1) de nettoyage.The container (3) ecosolvent is associated with a pump (6) for feeding the tank (1) cleaning.

Un boîtier de rinçage (7) est prévu pour la connexion étanche d'un pistolet (10) de pulvérisation relié par une canalisation de pulvérisation (11) à une pompe (12) alimentée par une tuyauterie (13) reliée à une canne d'alimentation (14).A rinsing box (7) is provided for the sealed connection of a spray gun (10) connected by a spray line (11) to a pump (12) fed by a pipe (13) connected to a rod of power supply (14).

Un conteneur à déchets non recyclables (8) peut être alimenté, par une canalisation isolable par l'intermédiaire d'une vanne d'isolation (9), pour recueillir les déchets en début de nettoyage.A non-recyclable waste container (8) can be fed, via an isolable pipe via an isolation valve (9), to collect the waste at the beginning of cleaning.

La cuve de nettoyage (1) comporte de préférence un doigt de gant (1a) permettant la connexion étanche de la canne (14) d'alimentation du circuit de peinture.The cleaning tank (1) preferably comprises a glove finger (1a) for sealing connection of the supply rod (14) of the paint circuit.

La station (4) de traitement d'effluents est avantageusement une station de traitement fabriquée et commercialisée sous l'appellation ASPIFLOC par la Société de Produits Chimiques de Bretagne (SPCB) et ne nécessite pas de description plus détaillée.The effluent treatment station (4) is advantageously a processing station manufactured and marketed under the name ASPIFLOC by the Brittany Chemicals Company (SPCB) and does not require a more detailed description.

Un automate programmable non représenté comporte avantageusement des instructions de codes de programme représentatives des étapes du procédé représenté et décrit en référence à la figure 1.A not shown programmable controller advantageously comprises program code instructions representative of the steps of the method shown and described with reference to FIG. figure 1 .

Le procédé peut être totalement automatisé, peut être semi-automatique, ou peut constituer en une suite d'opérations manuelles autorisées après acquittement de défauts correspondant notamment à des tests négatifs.The method can be fully automated, can be semi-automatic, or can be a series of authorized manual operations after acknowledging defects corresponding in particular to negative tests.

L'invention décrite en référence à un mode de réalisation particulier ne lui est nullement limitée, mais couvre au contraire toute modification de forme et toute variante de réalisation dans le cadre et l'esprit de l'invention.The invention described with reference to a particular embodiment is in no way limited thereto, but on the contrary covers any modification of form and any variant embodiment within the scope and spirit of the invention.

Ainsi, la station de traitement (4) peut être combinée avec une ou plusieurs installations de peinture associées chacune à sa propre cuve de nettoyage, moyennant l'utilisation de vannes d'aiguillage, de répartition et de sélection appropriées, selon une pratique connue de l'homme du métier.Thus, the treatment station (4) can be combined with one or more paint installations each associated with its own cleaning tank, through the use of appropriate switching, distribution and selection valves, in accordance with a known practice of the skilled person.

En particulier, l'invention s'étend également au cas de circuits de peinture pour carrosseries de taille importante, par exemple de poids-lourds ou de matériels roulants sur voie ferrée, comportant une installation de peinture à droite du matériel circulant et une installation de peinture à gauche du matériel circulant.In particular, the invention also extends to the case of paint circuits for large bodies, for example heavy goods vehicles or rolling stock on railway, including a painting facility on the right of the circulating equipment and a painting installation on the left of the circulating equipment.

Claims (13)

Procédé de nettoyage d'un circuit de pulvérisation, notamment de peinture, et de traitement des effluents chimiques générés, comportant les étapes suivantes : a) préparation et purge de la ligne d'aspiration de pompe à peinture ; b) premier rinçage du circuit de peinture à l'aide d'un premier volume prédéterminé d'effluent traité ; c) deuxième rinçage du circuit de peinture à l'aide d'un deuxième volume prédéterminé d' écosolvant ; d) troisième rinçage du circuit de peinture à l'aide d'un troisième volume prédéterminé d'effluent traité ;
de manière à économiser la consommation d'eau du réseau en recyclant l'effluent traité pour nettoyer et rincer le circuit de peinture. A method of cleaning a spraying circuit, in particular a paint circuit, and treating the chemical effluents generated, comprising the following steps: a) preparing and purging the paint pump suction line; b) first rinsing the paint circuit with a first predetermined volume of treated effluent; c) flushing the paint circuit with a second predetermined volume of ecosolvent; d) third flushing of the paint circuit with a third predetermined volume of treated effluent;
in order to save the water consumption of the network by recycling the treated effluent to clean and rinse the paint circuit. Procédé selon la revendication 1, caractérisé par le fait que l'étape de préparation et purge de la ligne d'aspiration de pompe à peinture comporte un branchement d'un pistolet ou moyen de pulvérisation à un boîtier de rinçage, une déconnexion d'un moyen d'aspiration ou canne d'aspiration, et une éjection des déchets par la pompe à peinture vers un conteneur à déchets.Process according to Claim 1, characterized in that the step of preparing and purging the paint pump suction line comprises connecting a spray gun or means to a rinsing box, disconnecting a suction means or suction rod, and an ejection of waste by the paint pump to a waste container. Procédé selon la revendication 1 ou la revendication 2, caractérisé par le fait que plusieurs moyens ou cannes d'aspiration associés à des moyens ou vannes d'isolation sont utilisés pour une communication sélective vers la pompe à peinture.Process according to Claim 1 or Claim 2, characterized in that several means or suction rods associated with insulation means or valves are used for selective communication to the paint pump. Procédé selon l'une quelconque des revendications 1 à 3, caractérisé par le fait que l'étape de premier rinçage du circuit de peinture à l'aide d'un premier volume prédéterminé d'effluent traité comporte avantageusement un remplissage d'une cuve de nettoyage avec un premier volume prédéterminé d'effluent traité, un prérinçage du circuit de peinture à travers le moyen ou pistolet de pulvérisation vers un conteneur d'écosolvant, et un rinçage du circuit de peinture à travers le moyen ou pistolet de pulvérisation vers une station de traitement d'effluents.Process according to any one of Claims 1 to 3, characterized in that the step of first rinsing the paint circuit with the aid of a first predetermined volume of treated effluent advantageously comprises a filling of a tank of cleaning with a first predetermined volume of treated effluent, pre-rinsing the paint circuit through the spray gun or medium to an ecosolvent container, and rinsing the paint circuit through the spray gun or medium to a station effluent treatment. Procédé selon l'une quelconque des revendications 1 à 4, caractérisé par le fait que l'étape de deuxième rinçage du circuit de peinture à l'aide d'un deuxième volume prédéterminé d'écosolvant comporte avantageusement un remplissage d'une cuve de nettoyage avec un deuxième volume prédéterminé d'écosolvant, un rinçage du circuit de peinture à travers le moyen ou pistolet de pulvérisation vers un conteneur d'écosolvant.Process according to any one of Claims 1 to 4, characterized in that the step of second rinsing of the paint circuit using a second volume The predetermined ecosolvent preferably comprises filling a cleaning tank with a second predetermined volume of ecosolvent, rinsing the paint circuit through the spray gun or medium to an ecosolvent container. Procédé selon l'une quelconque des revendications 1 à 5, caractérisé par le fait que l'étape de troisième rinçage du circuit de peinture à l'aide d'un troisième volume prédéterminé d'effluent traité comporte avantageusement un remplissage d'une cuve de nettoyage avec un troisième volume prédéterminé d'effluent traité, un prérinçage du circuit de peinture à travers le moyen ou pistolet de pulvérisation vers un conteneur d'écosolvant et un rinçage du circuit de peinture à travers le moyen ou pistolet de pulvérisation vers une station de traitement d'effluent.Process according to any one of Claims 1 to 5, characterized in that the step of third rinsing of the paint circuit with the aid of a third predetermined volume of treated effluent advantageously comprises a filling of a tank of cleaning with a third predetermined volume of treated effluent, pre-rinse the paint circuit through the spray gun or medium to an ecosolvent container and flushing the paint circuit through the spray gun or medium to a test station; effluent treatment. Procédé selon l'une quelconque des revendications 1 à 6, caractérisé par le fait que le procédé comporte une étape additionnelle de montée en teinte du circuit de peinture par éjection vers un conteneur à déchets jusqu'à obtention de la teinte désirée.Method according to any one of claims 1 to 6, characterized in that the method comprises an additional step of tinting the paint circuit by ejection to a garbage container until the desired shade is obtained. Installation de nettoyage et de traitement des effluents chimiques, notamment de peinture, comportant : a) des moyens de préparation et de purge de la ligne d'aspiration de pompe à peinture ; b) des moyens de premier rinçage du circuit de peinture à l'aide d'un premier volume prédéterminé d'effluent traité ; c) des moyens de deuxième rinçage du circuit de peinture à l'aide d'un deuxième volume prédéterminé d' écosolvant ; d) des moyens de troisième rinçage du circuit de peinture à l'aide d'un troisième volume prédéterminé d'effluent traité ;
de manière à économiser la consommation d'eau du réseau en recyclant l'effluent traité pour nettoyer et rincer le circuit de peinture. Installation for cleaning and treating chemical effluents, in particular paint, comprising: a) means for preparing and purging the paint pump suction line; b) means for first rinsing the paint circuit with a first predetermined volume of treated effluent; c) second rinsing means of the paint circuit with a second predetermined volume of ecosolvent; d) means for third rinsing of the paint circuit with a third predetermined volume of treated effluent;
in order to save the water consumption of the network by recycling the treated effluent to clean and rinse the paint circuit. Installation selon la revendication 8, caractérisée par le fait que les moyens de préparation et purge de la ligne d'aspiration de pompe à peinture comportent un boîtier de rinçage équipé de moyen de branchement d'un pistolet ou moyen de pulvérisation, un conteneur à déchets et une vanne d'isolation et d'éjection des déchets par la pompe à peinture vers le conteneur à déchets.Installation according to Claim 8, characterized in that the means for preparing and purging the paint pump suction line comprise a rinsing box equipped with means for connecting a spray gun or spraying means, a waste container. and an isolation valve and waste ejection by the paint pump to the waste container. Installation selon la revendication 9, caractérisée par le fait que plusieurs moyens ou cannes d'aspiration associés à des moyens ou vannes d'isolation sont utilisés pour une communication sélective vers la pompe à peinture.Installation according to claim 9, characterized in that several means or suction rods associated with means or isolation valves are used for selective communication to the paint pump. Installation selon l'une quelconque des revendications 8 à 10, caractérisée par le fait que l'installation comporte au moins une cuve de nettoyage apte à être remplie avec des volumes prédéterminés d'effluent traité ou d'écosolvant, pour rincer le circuit de peinture à travers le moyen ou pistolet de pulvérisation vers une destination appropriée.Installation according to any one of claims 8 to 10, characterized in that the installation comprises at least one cleaning tank capable of being filled with predetermined volumes of treated effluent or ecosolvent, to flush the paint circuit through the medium or spray gun to a suitable destination. Installation selon l'une quelconque des revendications 8 à 11, caractérisée par le fait que l'installation comporte une station de traitement constituée d'une cuve de stockage pour traitement avec agitation, d'un sac de filtration de phase solide et d'un conteneur d'effluents traités.Plant according to any one of Claims 8 to 11, characterized in that the installation comprises a treatment station consisting of a storage tank for stirring treatment, a solid phase filtration bag and a container of treated effluents. Installation selon l'une quelconque des revendications 8 à 12, caractérisée par le fait que l'installation comporte une logique ou un automate programmable assurant un guidage de l'opérateur, pour éviter les risques de mauvaise opération et les accidents de matériel et de personnel.Installation according to any one of claims 8 to 12, characterized in that the installation comprises a logic or a PLC providing operator guidance, to avoid the risk of misoperation and accidents of equipment and personnel .
EP11184098.9A 2010-10-13 2011-10-06 Method and facility for cleaning a spraying circuit, in particular of paint, and for treating the chemical effluent generated Active EP2441526B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1058331A FR2966061B1 (en) 2010-10-13 2010-10-13 METHOD AND INSTALLATION FOR CLEANING A SPRAY CIRCUIT, IN PARTICULAR PAINT, AND TREATMENT OF GENERIC CHEMICAL EFFLUENTS

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EP2441526A1 true EP2441526A1 (en) 2012-04-18
EP2441526B1 EP2441526B1 (en) 2018-05-02

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US (1) US10022757B2 (en)
EP (1) EP2441526B1 (en)
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Also Published As

Publication number Publication date
US20120111369A1 (en) 2012-05-10
US10022757B2 (en) 2018-07-17
EP2441526B1 (en) 2018-05-02
FR2966061B1 (en) 2012-12-21
FR2966061A1 (en) 2012-04-20

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