EP0365422A1 - Process for bringing together a liquid basic product and a hardener in order to obtain a rapid curing product, means for carrying out this process and apparatus provided with this means - Google Patents

Process for bringing together a liquid basic product and a hardener in order to obtain a rapid curing product, means for carrying out this process and apparatus provided with this means Download PDF

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Publication number
EP0365422A1
EP0365422A1 EP89402866A EP89402866A EP0365422A1 EP 0365422 A1 EP0365422 A1 EP 0365422A1 EP 89402866 A EP89402866 A EP 89402866A EP 89402866 A EP89402866 A EP 89402866A EP 0365422 A1 EP0365422 A1 EP 0365422A1
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EP
European Patent Office
Prior art keywords
circuit
hardener
mixer
flow
hydraulic
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.)
Granted
Application number
EP89402866A
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German (de)
French (fr)
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EP0365422B1 (en
Inventor
Jean Philippe Machenaud
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.)
PROSIGN SA
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PROSIGN SA
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Publication date
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Priority to AT89402866T priority Critical patent/ATE84335T1/en
Publication of EP0365422A1 publication Critical patent/EP0365422A1/en
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    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
    • E01C23/00—Auxiliary devices or arrangements for constructing, repairing, reconditioning, or taking-up road or like surfaces
    • E01C23/16—Devices for marking-out, applying, or forming traffic or like markings on finished paving; Protecting fresh markings
    • E01C23/20—Devices for marking-out, applying, or forming traffic or like markings on finished paving; Protecting fresh markings for forming markings in situ
    • E01C23/22—Devices for marking-out, applying, or forming traffic or like markings on finished paving; Protecting fresh markings for forming markings in situ by spraying
    • 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
    • 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
    • B05B7/26—Apparatus in which liquids or other fluent materials from different sources are brought together before entering the discharge device
    • B05B7/28—Apparatus in which liquids or other fluent materials from different sources are brought together before entering the discharge device in which one liquid or other fluent material is fed or drawn through an orifice into a stream of a carrying fluid
    • B05B7/32—Apparatus in which liquids or other fluent materials from different sources are brought together before entering the discharge device in which one liquid or other fluent material is fed or drawn through an orifice into a stream of a carrying fluid the fed liquid or other fluent material being under pressure

Definitions

  • the invention relates to a process for bringing together a basic liquid product and a hardener in order to produce a product with rapid hardening.
  • paint distribution methods are known, in particular using a so-called “airless” circuit, mainly comprising a motor, driving at least one pump expelling the paint contained in a tank by a circuit. leading to a spray nozzle on the ground.
  • airless circuit mainly comprising a motor, driving at least one pump expelling the paint contained in a tank by a circuit. leading to a spray nozzle on the ground.
  • the motor driving the paint pump can be of any known type and for example consist of a hydraulic motor supplied by a hydraulic circuit comprising a variable flow pump taking oil from a reservoir to lead it to the hydraulic motor after passing through a connection to a safety valve then by a pressure reducer / regulator and possibly a flow reducer avoiding runaway motor and / or a flowmeter, for example connected to a computer, depending on the ratio of the two circuits to determine the paint flow rate.
  • the oil pump is itself driven by any known means such as a heat engine.
  • All of these means are generally mounted on the chassis of a vehicle.
  • the characteristics of the nozzle and its height above the ground determine the width of the paint deposit.
  • the nozzle flow rate and the vehicle advance speed determine the thickness of the paint layer deposited.
  • the vehicle generally carries a charge distributor such as retroreflective microbeads and / or sand.
  • this hardener is in the form of a powder distributed in the manner or even jointly with the fillers.
  • This method of bringing together the base product and the hardener does not allow a uniform mixing, and therefore a drying, of the paint.
  • the main circuit and the secondary circuit both lead to the same mixer supplying the spray nozzle.
  • They can also be powered by the same hydraulic pump.
  • the corresponding installation may not, however, be suitable for bringing a liquid product and a liquid hardener into contact with one another in order to obtain a product which hardens as quickly as is desirable for a road paint and for example hardens approximately in one minute per free air at 20 ° celsius or in thirty seconds sheltered from the air.
  • the proportions of hardener relative to the base being very low and for example only 1 to 2%, the flow rate of the circuit of the hardener would be low and its low speed and the constancy of the pressure that the pump would communicate to the hardener would lead quickly the liquid and solid parts of it to separate from each other and make this hardener unusable.
  • a result which the invention aims to obtain is a method of bringing together a base and a hardener which ensures uniform mixing of the product obtained and which does not affect the colors in which this product appears.
  • the invention aims to obtain a process which ensures that the distribution means cannot become clogged and that the hardener will remain usable for a very long time.
  • the subject of the invention is a method of the aforementioned type, according to which method, the secondary tank is supplied with liquid hardener which the circuit of the secondary product leads to the mixer which mixes it with the base before driving the mixture to the spray nozzle, and at the end of spraying, the arrival of the base and the hardener is interrupted at the mixer and a draining and cleaning cycle is initiated, during which the draining and cleaning cycle, the return of the hardener to its reservoir is controlled so as to recycle it, this process being in particular characterized in that: - as soon as the spraying is interrupted, a delay circuit is activated, set for a duration between a zero value and a value at least slightly less than the curing time in the absence of air, - at the end of the predetermined duration, with the help of this timing circuit, a signal is transmitted using which: .
  • the supply of the base (1) and the hardener to the mixer is interrupted and .
  • the emptying and cleaning cycle is started, comprising in particular alternately, washing phases with at least one solvent and rinsing phases, during which cleaning cycle, the above-mentioned return of the hardener to its tank is controlled so as to recycle it .
  • the installation mainly comprises a basic circuit 4 with in particular a motor 5 driving at least one pump 6 expelling the base 1 contained in a reservoir 7 in said circuit 4 leading to a nozzle 8 for spraying on the ground 9.
  • a valve P1 Downstream of the nozzle 8 is provided a valve P1 controlled by circuits 35, 36 and making it possible to interrupt the spraying.
  • the motor 5 driving the base pump 4 consists, for example, of a hydraulic motor supplied by a hydraulic circuit 10 comprising its hydraulic pump 11 with variable flow taking oil 12 from a reservoir 13 to drive it to the hydraulic motor 5 after passage by a connection to a safety valve 14 then by a reducer of pressure 15 and optionally a flow reducer 16, avoiding the runaway of the engine, and / or a flow meter 17 for example connected to a computer 18 with microprocessor.
  • the oil pump is itself driven by a motor 19, for example an internal combustion engine.
  • All of these means are generally carried by a vehicle chassis (not shown).
  • the installation can conventionally comprise at least one distributor (not shown) of charges such as retroreflective microbeads and / or sand.
  • the installation may also include a circuit 24 for secondary product with a secondary pump 26 controlled by a secondary motor 25 expelling the second product contained in a secondary tank 27 by the circuit 24 of the secondary product.
  • the circuit 4 of the main product and the circuit 24 of the secondary product both lead to the same mixer 21 supplying the spray nozzle 8 under the control of the controlled valve P1.
  • the two pumps 6, 26 then obviously have flow rates adjusted to respect the proportions of the mixture to be produced and the main hydraulic circuit 10 has its action synchronized with that of a secondary hydraulic circuit 20.
  • This secondary hydraulic circuit 20 for example the main hydraulic circuit 10, passes through a pressure reducer 22 or even through a flow reducer 23 avoiding the runaway of the engine 25 and / or a flow meter 28.
  • the secondary tank 27 is supplied with liquid hardener 2 which the secondary product circuit 24 leads to the mixer 21 which mixes it at the base 1 before driving the mixture to the spray nozzle 8, - as soon as the spraying is interrupted, a delay circuit activated for a duration between a zero value and a value at least slightly less than the curing time of the mixture protected from air is activated, - at the end of the predetermined duration, using this timing circuit: .
  • a signal is emitted with the aid of which the arrival of the base 1 and the hardener 2 is interrupted at the mixer 21 and . an emptying and cleaning cycle is initiated including in particular alternating, washing phases with at least one solvent and rinsing phases.
  • the hardener is brought back upstream of the mixer to its tank so as to recycle it.
  • the flow rate of the secondary product circuit 24 does not need to be maintained in the proportions, relative to the flow rate of the primary circuit, necessary for mixing also to accelerate the circulation of the hardener and therefore recycling, according to a Another characteristic of the invention, the movement of the motor 25 controlling the secondary pump 26 ensuring the circulation of the hardener is accelerated.
  • a branch 30 is established and on at least one of the sections which form this branch 30 and the part 29 of the circuit bypassed by this branch, the flow is regulated so that in the bypass 30, the flow is greater than in the part 29 of the circuit 20 bypassed by this bypass 30 and at the time of recycling, we pass the hydraulic flow of the secondary circuit by the bypass while during mixing we pass the flow of the secondary hydraulic circuit through part 29 of the secondary circuit which was bypassed by the bypass.
  • the presence of the base and the hardener at the top of the mixer is monitored and, in the absence of at least one of them, the feeding of the mixing head is prohibited.
  • the installation comprises: - controlled valves P2, P3 at the inlet to the mixer 21 of the base 4 circuits 1 and 24 of hardener, - circuits 31, 32 for supplying the products used during the different phases of the cleaning cycle, which circuits 31, 32 are connected at the head of the mixer 21, downstream of the controlled valves P2, P3 of circuits 4 and 24 basic 1 and hardener 2, - controlled valves P4, P5 controlling the arrival at the top of the mixer of cleaning products through their circuits 31, 32, - connected at the outlet of the mixer, upstream of the controlled valve P1 controlling the spraying, a circuit 33 for evacuating the products contained in the mixer, leading to a tank 34 collecting these products such as the solvent and hardener mixtures, a controlled valve P6 controlling the evacuation to the reservoir 34 of the products contained in the mixer through their circuit 33,
  • circuits 35, 36 for controlling the valve P1 controlling the spraying a timing circuit 37 on the one hand, provided with means 38 for adjusting between a zero duration and a duration at least slightly less than that necessary for hardening of the mixture away from air and, on the other hand, emitting a signal at the end of this period, - a circuit 39, 40 which upon receipt of this signal controls the closing of the controlled valves P2, P3 arriving at the mixer of the base 1 and the hardener 2 and starts a draining and cleaning cycle comprising alternating washing phases with at least one solvent and rinsing phases.
  • the installation further comprises: a recycling pipe 54 of the hardener 2 connected to the circuit 24 of the hardener 2 upstream of the controlled valve P2 controlling the arrival of the hardener 2 at the mixer 21, which recycling pipe 54 returns to the secondary tank 27 of the hardener, - interposed on this recycling pipe 54, a controlled valve P7 controlling the return of the hardener 2 to its reservoir 27.
  • a recycling pipe 54 of the hardener 2 connected to the circuit 24 of the hardener 2 upstream of the controlled valve P2 controlling the arrival of the hardener 2 at the mixer 21, which recycling pipe 54 returns to the secondary tank 27 of the hardener, - interposed on this recycling pipe 54, a controlled valve P7 controlling the return of the hardener 2 to its reservoir 27.
  • a branch 30 is established and on at least one of the sections that form this branch 30 and the part 29 of the circuit bypassed by this branch , a flow regulator 44, 45 is inserted so that in the bypass 30, the flow is greater than in the part 29 of the circuit 20 bypassed by this bypass 30 and at the head of the bypass and the bypassed part, we interpose a distributor 50 directing the oil to one or other of the sections 29, 30 namely at the time of recycling, the flow of the secondary circuit is passed through the bypass 30 while during mixing the flow of the secondary hydraulic circuit by part 29 of the secondary circuit which was bypassed by bypass 30.
  • the installation also comprises means for monitoring the presence of the base and the hardener at the top of the mixer and means preventing the supply of the mixer in the event of a fault in at least one of these products.
  • the cycle takes place as follows: - in the initial state, the valve P7 of the recycling circuit 54 is open while all the other valves P1 to P6 are closed, - next, the mixer 21 is put under pressure by opening the valves P2, P3 supplying the base 1 and the hardener 2 while the other valves are closed, - then starts the application by opening the spraying valve P1 and, - as soon as the spraying valve P1 closes during the preset time, the delay circuit starts the rinsing cycle: .
  • valves P2, P3 supplying the base and the hardener and the spraying valve P1 are closed while the other valves P4 to P7 are open, - then a chemical rinse during which only the valves P4, P5 for supplying the cleaning agents and the valve P7 for recycling are open.
  • the rinsing can then be repeated several times before a final rinsing during which the P6 valve for discharging the product contained in the mixer is opened, - Finally, the rinsing is completed by closing the aforementioned valves except for that of recycling P7 to return to the initial state.
  • the chemical rinsing preferably takes place for a short time, for example five seconds, followed by a period of soaking with the solvent also of the order of five seconds, this repeated several times and for example between one to twelve times.
  • all of the controlled valves are provided with a double control, one main electric, the other spare tire.
  • the mixer 21 advantageously comprises a first mixer 41 of the so-called “whorl” type communicating to the products successive accelerations and braking promoting their mixing at the outlet of which is connected a flexible pipe 42 for connection to a second mixer 43 of the static type called “divider” which, by dividing the flow, perfects the mixture.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Nozzles (AREA)
  • Processes Of Treating Macromolecular Substances (AREA)
  • Accessories For Mixers (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)

Abstract

The invention relates to a method and apparatus for bringing together a mixture comprising a basic liquid product and a hardener with a view to attaining a fast-hardening product for spraying a surface characterized in that upon the interruption of the spraying, a circuit for adjusted delay is activated for a period of time between a zero value and a value at least slightly less than the hardening time of the hardener when air-sealed. At the end of the predetermined period of time delay, with the aid of this delay circuit, a signal is emitted, the signal is operatively applied to circuits to cause the feeding of the base and hardener (2) to the mixer to be interrupted while an evacuation and cleaning cycle is triggered. This cycle includes, in particular, alternating phases of washing, using at least one solvent, and rinsing. During the cleaning cycle, the hardener is returned to its reservoir by way of a recirculation circuit. The invention is applicable to the engineering industry, and in particular to equipment for marking roadways.

Description

L'invention se rapporte à un procédé de mise en présence d'un produit liquide de base et d'un durcisseur en vue de réaliser un produit à durcissement rapide.The invention relates to a process for bringing together a basic liquid product and a hardener in order to produce a product with rapid hardening.

Elle se rapporte également aux moyens en vue de la mise en oeuvre de ce procédé et à l'installation pourvue de ces moyens.It also relates to the means for implementing this process and to the installation provided with these means.

Elle s'applique plus particulièrement mais non exclusivement au domaine de l'application au sol de marques notamment de signalisation routière.It applies more particularly but not exclusively to the field of the application on the ground of marks in particular of road signs.

Dans ce domaine, on connaît des procédés de distribution de peinture notamment à l'aide d'un circuit dit "airless" (sans air), comprenant principalement un moteur, entraînant au moins une pompe chassant la peinture contenue dans un réservoir par un circuit conduisant à une buse de pulvérisation sur le sol.In this field, paint distribution methods are known, in particular using a so-called "airless" circuit, mainly comprising a motor, driving at least one pump expelling the paint contained in a tank by a circuit. leading to a spray nozzle on the ground.

Le moteur entraînant la pompe à peinture peut être de tout type connu et par exemple consister en un moteur hydraulique alimenté par un circuit hydraulique comprenant une pompe à débit variable prélevant l'huile d'un réservoir pour la conduire vers le moteur hydraulique aprés passage par un raccordement à une soupape de sureté puis par un réducteur/régulateur de pression et éventuellement un réducteur de débit évitant l'emballement du moteur et/ou un débitmètre par exemple relié à un calculateur pour en fonction du rapport des deux circuits déterminer le débit de peinture.The motor driving the paint pump can be of any known type and for example consist of a hydraulic motor supplied by a hydraulic circuit comprising a variable flow pump taking oil from a reservoir to lead it to the hydraulic motor after passing through a connection to a safety valve then by a pressure reducer / regulator and possibly a flow reducer avoiding runaway motor and / or a flowmeter, for example connected to a computer, depending on the ratio of the two circuits to determine the paint flow rate.

La pompe à huile est elle-même entraînée par tout moyen connu tel un moteur thermique.The oil pump is itself driven by any known means such as a heat engine.

L'ensemble de ces moyens est généralement monté sur le chassis d'un véhicule.All of these means are generally mounted on the chassis of a vehicle.

Les caractéristiques de la buse et sa hauteur par rapport au sol déterminent la largeur du dépôt de peinture.The characteristics of the nozzle and its height above the ground determine the width of the paint deposit.

Le débit de la buse et la vitesse d'avance du véhicule déterminent quant à eux l'épaisseur de la couche de peinture déposée.The nozzle flow rate and the vehicle advance speed determine the thickness of the paint layer deposited.

Par l'interruption du débit de la buse qui s'obtient à l'aide d'une vanne commandée placée en amont de la buse, on détermine les limites des marques à réaliser.By interrupting the flow rate of the nozzle which is obtained by means of a controlled valve placed upstream of the nozzle, the limits of the marks to be produced are determined.

A côté de la buse pulvérisant la peinture, le véhicule porte généralement un distributeur de charges telles des microbilles rétroréflectrices et/ou du sable.Next to the paint spraying nozzle, the vehicle generally carries a charge distributor such as retroreflective microbeads and / or sand.

Afin de gêner le moins longtemps possible la circulation routière, la peinture doit sêcher très rapidement et à cet effet, il est connu de faire appel à un durcisseur.In order to hinder road traffic for as short a time as possible, the paint must dry very quickly and for this purpose it is known to use a hardener.

A ce jour, ce durcisseur se présente sous la forme d'une poudre distribuée à la manière voire même conjointement aux charges.To date, this hardener is in the form of a powder distributed in the manner or even jointly with the fillers.

Il n'atteint donc que la surface de la couche de peinture.It therefore only reaches the surface of the paint layer.

Ce mode de mise en prèsence du produit de base et du durcisseur ne permet pas un mélange, ni de ce fait un séchage, uniforme de la peinture.This method of bringing together the base product and the hardener does not allow a uniform mixing, and therefore a drying, of the paint.

En outre, cela détériore les cou leurs sous lesquelles apparait la peinture.In addition, it deteriorates the colors under which the paint appears.

Pour la mise en présence de deux produits liquides de base, on connaît (EP-45536) des installations comprenant, en plus du circuit principal, un circuit secondaire avec une pompe secondaire chassant le deuxième produit liquide contenu dans un réservoir secondaire par le circuit secondaire.For bringing two basic liquid products into contact, there are known (EP-45536) installations comprising, in addition to the main circuit, a secondary circuit with a secondary pump driving out the second liquid product contained in a secondary reservoir by the secondary circuit .

Le circuit principal et le circuit secondaire conduisent tous deux à un même mélangeur alimentant la buse de pulvérisation.The main circuit and the secondary circuit both lead to the same mixer supplying the spray nozzle.

Pour respecter les proportions du mélange à réaliser, les deux pompes ont évidemment des débits réglés en conséquence et les circuits hydrauliques ont leurs actions synchronisées.To respect the proportions of the mixture to be produced, the two pumps obviously have flow rates adjusted accordingly and the hydraulic circuits have their actions synchronized.

Ils peuvent aussi être alimentés par une même pompe hydraulique.They can also be powered by the same hydraulic pump.

L'installation correspondante ne peut toutefois convenir pour la mise en présence d' un produit liquide et d'un durcisseur liquide pour parvenir à un produit à durcissement aussi rapide que souhaitable pour une peinture routière et par exemple durcissant environ en une minute à l'air libre à 20° celsius ou en trente secondes à l'abri de l'air.The corresponding installation may not, however, be suitable for bringing a liquid product and a liquid hardener into contact with one another in order to obtain a product which hardens as quickly as is desirable for a road paint and for example hardens approximately in one minute per free air at 20 ° celsius or in thirty seconds sheltered from the air.

En effet, pendant les interruptions de la pulvérisation, le produit mélangé aurait, bien évidemment, le temps de se solidifier dans le mé angeur et de rendre ce mélangeur inutilisable.Indeed, during the interruptions of the spraying, the mixed product would, of course, have time to solidify in the me anger and make this mixer unusable.

En outre, les proportions de durcisseur par rapport à la base étant très faibles et par exemple de 1 à 2 % seulement, le débit du circuit du durcisseur serait faible et sa faible vitesse et la constance de la pression que la pompe communiquerait au durcisseur conduiraient rapidement les parties liquides et solides de celui-ci à se séparer les unes des autres et à rendre ce durcisseur inutilisable.In addition, the proportions of hardener relative to the base being very low and for example only 1 to 2%, the flow rate of the circuit of the hardener would be low and its low speed and the constancy of the pressure that the pump would communicate to the hardener would lead quickly the liquid and solid parts of it to separate from each other and make this hardener unusable.

Un résultat que l'invention vise à obtenir est un procédé de mise en présence d'une base et d'un durcisseur qui assure un mélange uniforme du produit obtenu et qui n'en affecte pas les couleurs sous lesquelles ce produit apparaît.A result which the invention aims to obtain is a method of bringing together a base and a hardener which ensures uniform mixing of the product obtained and which does not affect the colors in which this product appears.

Est également un résultat que l'invention vise à obtenir un procédé qui assure que les moyens de distribution ne puissent se colmater et que le durcisseur restera utilisable très longtemps.It is also a result that the invention aims to obtain a process which ensures that the distribution means cannot become clogged and that the hardener will remain usable for a very long time.

A cet effet, l'invention a pour objet un procédé du type précité, selon lequel procédé, on alimente le réservoir secondaire avec du durcisseur liquide que le circuit du produit secondaire conduit au mélangeur qui le mélange à la base avant de conduire le mélange à la buse de pulvérisation, et au terme de la pulvérisation, on interrompt l'arrivé de la base et du durcisseur au mélangeur et on enclenche un cycle de vidange et de nettoyage, pendant lequel cycle de vidange et de nettoyage, on commande le retour du durcisseur vers son réservoir de manière à le recycler, ce procédé étant notamment caractérisé en ce qu :
- dès l'interruption de la pulvérisation, on active un circuit de temporisation réglée sur une durée comprise entre une valeur nulle et une valeur au moins légèrement inférieure au temps de durcissement à l'abri de l'air,
- au terme de la durée prédéterminée, a l'aide de ce circuit de temporisation, on émet un signal à l'aide duquel :
. on interrompt l'arrivée de la base (1) et du durcisseur au mélangeur et
. on enclenche le cycle de vidange et de nettoyage comprenant notamment en alternance, des phases de lavage avec au moins un solvant et des phases de rinçage, pendant lequel cycle de nettoyage, on commande le susdit retour du durcisseur vers son réservoir de manière à le recycler.To this end, the subject of the invention is a method of the aforementioned type, according to which method, the secondary tank is supplied with liquid hardener which the circuit of the secondary product leads to the mixer which mixes it with the base before driving the mixture to the spray nozzle, and at the end of spraying, the arrival of the base and the hardener is interrupted at the mixer and a draining and cleaning cycle is initiated, during which the draining and cleaning cycle, the return of the hardener to its reservoir is controlled so as to recycle it, this process being in particular characterized in that:
- as soon as the spraying is interrupted, a delay circuit is activated, set for a duration between a zero value and a value at least slightly less than the curing time in the absence of air,
- at the end of the predetermined duration, with the help of this timing circuit, a signal is transmitted using which:
. the supply of the base (1) and the hardener to the mixer is interrupted and
. the emptying and cleaning cycle is started, comprising in particular alternately, washing phases with at least one solvent and rinsing phases, during which cleaning cycle, the above-mentioned return of the hardener to its tank is controlled so as to recycle it .

Elle a également pour objet les moyens en vue de la mise en oeuvre de ce procédé et l'installation pourvue de ces moyens.It also relates to the means for the implementation of this process and the installation provided with these means.

Elle sera bien comprise à l'aide de la description ci-apres faite à titre d'exemple non limitatif en regard du dessin ci-annexé qui représente schématiquement une installation pourvue des moyens de mise en oeuvre de l'invention.It will be clearly understood with the aid of the description below given by way of nonlimiting example with regard to the appended drawing which schematically represents an installation provided with means for implementing the invention.

En se reportant au dessin, on voit que pour la mise en présence d'un produit liquide de base 1, tel une peinture, et d'un durcisseur 2, l'installation comprend principalement un circuit de base 4 avec notamment un moteur 5 entraînant au moins une pompe 6 chassant la base 1 contenue dans un réservoir 7 dans le dit circuit 4 conduisant à une buse 8 de pulvérisation sur le sol 9.Referring to the drawing, it can be seen that for bringing together a basic liquid product 1, such as a paint, and a hardener 2, the installation mainly comprises a basic circuit 4 with in particular a motor 5 driving at least one pump 6 expelling the base 1 contained in a reservoir 7 in said circuit 4 leading to a nozzle 8 for spraying on the ground 9.

En amont de la buse 8 est prévue une vanne P₁ commandée par des circuits 35, 36 et permettant d'interrompre la pulvérisation.Upstream of the nozzle 8 is provided a valve P₁ controlled by circuits 35, 36 and making it possible to interrupt the spraying.

Le moteur 5 entraînant la pompe de base 4 consiste par exemple en un moteur hydraulique alimenté par un circuit hydraulique 10 comprenant sa pompe hydraulique 11 à débit variable prélevant de l'huile 12 dans un réservoir 13 pour la conduire vers le moteur hydraulique 5 après passage par un raccordement à une soupape de surété 14 puis par un réducteur de pression 15 et éventuellement un réducteur de débit 16, évitant l'emballement du moteur, et/ou un débitmètre 17 par exemple relié à un calculateur 18 à microprocesseur.The motor 5 driving the base pump 4 consists, for example, of a hydraulic motor supplied by a hydraulic circuit 10 comprising its hydraulic pump 11 with variable flow taking oil 12 from a reservoir 13 to drive it to the hydraulic motor 5 after passage by a connection to a safety valve 14 then by a reducer of pressure 15 and optionally a flow reducer 16, avoiding the runaway of the engine, and / or a flow meter 17 for example connected to a computer 18 with microprocessor.

La pompe à huile est elle-même entraînée par un moteur 19 par exemple thermique.The oil pump is itself driven by a motor 19, for example an internal combustion engine.

L'ensemble de ces moyens est généralement porté par un chassis de véhicule (non représenté).All of these means are generally carried by a vehicle chassis (not shown).

A côté de la buse de pulvérisation 8, l'installation peut classiquement comprendre au moins un distributeur (non représenté) de charges telles des microbilles rétroréflectrices et/ou du sable.Next to the spray nozzle 8, the installation can conventionally comprise at least one distributor (not shown) of charges such as retroreflective microbeads and / or sand.

L'installation peut également comprendre un circuit 24 pour produit secondaire avec une pompe secondaire 26 commandée par un moteur secondaire 25 chassant le second produit contenu dans un réservoir secondaire 27 par le circuit 24 du produit secondaire.The installation may also include a circuit 24 for secondary product with a secondary pump 26 controlled by a secondary motor 25 expelling the second product contained in a secondary tank 27 by the circuit 24 of the secondary product.

Le circuit 4 du produit principal et le circuit 24 du produit secondaire conduisent tous deux à un même mélangeur 21 alimentant la buse de pulvérisation 8 sous le contrôle de la vanne commandée P₁.The circuit 4 of the main product and the circuit 24 of the secondary product both lead to the same mixer 21 supplying the spray nozzle 8 under the control of the controlled valve P₁.

Les deux pompes 6, 26 ont alors évidemment des débits réglés pour respecter les proportions du mélange à réaliser et le circuit hydraulique principal 10 a son action synchronisée avec celle d'un circuit hydraulique secondaire 20.The two pumps 6, 26 then obviously have flow rates adjusted to respect the proportions of the mixture to be produced and the main hydraulic circuit 10 has its action synchronized with that of a secondary hydraulic circuit 20.

Ce circuit hydraulique secondaire 20, à l'exemple du circuit hydraulique principal 10, passe par un réducteur de pression 22 voire même par un réducteur de débit 23 évitant l'emballement du moteur 25 et/ou un débitmètre 28.This secondary hydraulic circuit 20, for example the main hydraulic circuit 10, passes through a pressure reducer 22 or even through a flow reducer 23 avoiding the runaway of the engine 25 and / or a flow meter 28.

Ces deux circuits hydrauliques 10, 20 sont par exemple alimentés par une même pompe à débit variable 11 et placés sous le contrôle de la même soupape de sûreté 14.These two hydraulic circuits 10, 20 are for example supplied by the same variable flow pump 11 and placed under the control of the same safety valve 14.

Afin de mettre en présence la base et le durcisseur 2 :
- on alimente le réservoir secondaire 27 avec du durcisseur liquide 2 que le circuit de produit secondaire 24 conduit au mélangeur 21 qui le mélange à la base 1 avant de conduire le mélange à la buse 8 de pulvérisation,
- dès l'interruption de la pulvérisation, on active un circuit de temporisation réglée sur une durée comprise entre une valeur nulle et une valeur au moins légèrement inférieure au temps de durcissement du mélange à l'abri de l'air,
- au terme de la durée prédéterminée, à l'aide de ce circuit de temporisation :
. on émet un signal à l'aide duquel on interrompt l'arrivée de la base 1 et du durcisseur 2 au mélangeur 21 et
. on enclenche un cycle de vidange et de nettoyage comprenant notamment en alternance, des phases de lavage avec au moins un solvant et des phases de rinçage.In order to bring together the base and the hardener 2:
the secondary tank 27 is supplied with liquid hardener 2 which the secondary product circuit 24 leads to the mixer 21 which mixes it at the base 1 before driving the mixture to the spray nozzle 8,
- as soon as the spraying is interrupted, a delay circuit activated for a duration between a zero value and a value at least slightly less than the curing time of the mixture protected from air is activated,
- at the end of the predetermined duration, using this timing circuit:
. a signal is emitted with the aid of which the arrival of the base 1 and the hardener 2 is interrupted at the mixer 21 and
. an emptying and cleaning cycle is initiated including in particular alternating, washing phases with at least one solvent and rinsing phases.

Afin, pendant le cycle de nettoyage, d'éviter de maintenir sous pression le durcisseur, on commande le retour du durcisseur en amont du mélangeur vers son réservoir de manière à le recycler.In order to avoid keeping the hardener under pressure during the cleaning cycle, the hardener is brought back upstream of the mixer to its tank so as to recycle it.

Pendant le recyclage, le débit du circuit 24 de produit secondaire n'a pas besoin d'être maintenu dans les proportions, par rapport au débit du circuit primaire, nécessaires au mélange aussi pour accélérer la circulation du durcisseur et donc le recyclage, selon une autre caractéristique de l'invention, on accélère le mouvement du moteur 25 commandant la pompe secondaire 26 assurant la circulation du durcisseur.During recycling, the flow rate of the secondary product circuit 24 does not need to be maintained in the proportions, relative to the flow rate of the primary circuit, necessary for mixing also to accelerate the circulation of the hardener and therefore recycling, according to a Another characteristic of the invention, the movement of the motor 25 controlling the secondary pump 26 ensuring the circulation of the hardener is accelerated.

A cet effet, sur une partie 29 du circuit hydraulique secondaire 20, on établit une dérivation 30 et sur au moins l'un des tronçons que forment cette dérivation 30 et la partie 29 de circuit contournée par cette dérivation, on régule le débit de sorte que dans la dérivation 30, le débit soit plus important que dans la partie 29 du circuit 20 contournée par cette dérivation 30 et au moment du recyclage, on fait passer le flux hydraulique du circuit secondaire par la dérivation tandis que pendant le mélange on fait passer le flux du circuit hydraulique secondaire par la partie 29 du circuit secondaire qui était contourné par la dérivation.For this purpose, on a part 29 of the secondary hydraulic circuit 20, a branch 30 is established and on at least one of the sections which form this branch 30 and the part 29 of the circuit bypassed by this branch, the flow is regulated so that in the bypass 30, the flow is greater than in the part 29 of the circuit 20 bypassed by this bypass 30 and at the time of recycling, we pass the hydraulic flow of the secondary circuit by the bypass while during mixing we pass the flow of the secondary hydraulic circuit through part 29 of the secondary circuit which was bypassed by the bypass.

Dans un mode préféré, on surveille la présence de la base et du durcisseur en tête du mélangeur et en l'absence d'au moins l'un d'eux on interdit l'alimentation de la tête de mélange.In a preferred mode, the presence of the base and the hardener at the top of the mixer is monitored and, in the absence of at least one of them, the feeding of the mixing head is prohibited.

Avantageusement, pendant le cycle de nettoyage, on prévoit des phases de détrempage avec le solvant.Advantageously, during the cleaning cycle, soaking phases with the solvent are provided.

De même, on prévoit une phase de séchage à l'air sous pression.Likewise, a phase of drying in pressurized air is provided.

En vue de la mise en oeuvre du procédé, selon l'invention, en plus de la vanne commandée P₁ qui en sortie du mélangeur 21 est prévue juste en amont de la buse 8, l'installation comprend:
- des vannes commandées P₂, P₃ à l'arrivée à l'entrée du mélangeur 21 des circuits 4 de base 1 et 24 de durcisseur,
- des circuits 31, 32 d'amenée des produits utilisés lors des différentes phases du cycle de nettoyage, lesquels circuits 31, 32 sont raccordés en tête du mélangeur 21, en aval des vannes commandées P₂, P₃ des circuits 4 et 24 de base 1 et de durcisseur 2,
- des vannes commandées P₄, P₅ contrôlant l'arrivée en tête du mélangeur des produits de nettoyage par leurs circuits 31, 32,
- raccordée en sortie du mélangeur, en amont de la vanne commandée P₁ contrôlant la pulvérisation, un circuit 33 d' évacuation des produits contenus dans le mélangeur, conduisant à un réservoir 34 reccueillant ces produits tels les mélanges de solvant et de durcisseur,
- une vanne commandée P₆ contrôlant l'évacuation vers le réservoir 34 des produits contenus dans le mélangeur par leur circuit 33,
With a view to implementing the method according to the invention, in addition to the controlled valve P₁ which, at the outlet of the mixer 21, is provided just upstream of the nozzle 8, the installation comprises:
- controlled valves P₂, P₃ at the inlet to the mixer 21 of the base 4 circuits 1 and 24 of hardener,
- circuits 31, 32 for supplying the products used during the different phases of the cleaning cycle, which circuits 31, 32 are connected at the head of the mixer 21, downstream of the controlled valves P₂, P₃ of circuits 4 and 24 basic 1 and hardener 2,
- controlled valves P₄, P₅ controlling the arrival at the top of the mixer of cleaning products through their circuits 31, 32,
- connected at the outlet of the mixer, upstream of the controlled valve P₁ controlling the spraying, a circuit 33 for evacuating the products contained in the mixer, leading to a tank 34 collecting these products such as the solvent and hardener mixtures,
a controlled valve P₆ controlling the evacuation to the reservoir 34 of the products contained in the mixer through their circuit 33,

- relié aux circuits 35, 36 de commande de la vanne P₁ contrôlant la pulvérisation, un circuit 37 de temporisation d'une part, pourvu d'un moyen 38 de réglage entre une durée nulle et une durée au moins légèrement inférieure à celle nécessaire au durcissement du mélange à l'abri de l'air et, d'autre part, émettant au terme de cette durée un signal,
- un circuit 39, 40 qui a réception de ce signal commande la fermeture des vannes commandées P₂, P₃ d' arrivée au mélangeur de la base 1 et du durcisseur 2 et enclenche un cycle de vidange et de nettoyage comprenant en alternance des phases de lavage avec au moins un solvant et des phases de rinçage.connected to circuits 35, 36 for controlling the valve P₁ controlling the spraying, a timing circuit 37 on the one hand, provided with means 38 for adjusting between a zero duration and a duration at least slightly less than that necessary for hardening of the mixture away from air and, on the other hand, emitting a signal at the end of this period,
- a circuit 39, 40 which upon receipt of this signal controls the closing of the controlled valves P₂, P₃ arriving at the mixer of the base 1 and the hardener 2 and starts a draining and cleaning cycle comprising alternating washing phases with at least one solvent and rinsing phases.

De préférence, l'installation comprend en outre :
- une conduite de recyclage 54 du durcisseur 2 raccordée au circuit 24 du durcisseur 2 en amont de la vanne commandée P₂ contrôlant l'arrivée du durcisseur 2 au mélangeur 21, laquelle conduite de recyclage 54 retourne au réservoir secondaire 27 du durcisseur,
- intercalée sur cette conduite de recyclage 54, une vanne commandée P₇ contrôlant le retour du durcisseur 2 à son réservoir 27.Preferably, the installation further comprises:
a recycling pipe 54 of the hardener 2 connected to the circuit 24 of the hardener 2 upstream of the controlled valve P₂ controlling the arrival of the hardener 2 at the mixer 21, which recycling pipe 54 returns to the secondary tank 27 of the hardener,
- interposed on this recycling pipe 54, a controlled valve P₇ controlling the return of the hardener 2 to its reservoir 27.

Avantageusement, afin d' accélérer le recyclage du durcisseur, sur une partie 29 du circuit hydraulique secondaire 20, on établit une dérivation 30 et sur au moins l'un des tronçons que forment cette dérivation 30 et la partie 29 de circuit contournée par cette dérivation, on intercale un régulateur de débit 44, 45 de sorte que dans la dérivation 30, le débit soit plus important que dans la partie 29 du circuit 20 contournée par cette dérivation 30 et en tête de la dérivation et de la partie contournée, on intercale un distributeur 50 dirigeant l'huile vers l'un ou l'autre des tronçons 29, 30 à savoir au moment du recyclage, on fait passer le flux du circuit secondaire par la dérivation 30 tandis que pendant le mélange on fait passer le flux du circuit hydraulique secondaire par la partie 29 du circuit secondaire qui était contourné par la dérivation 30.Advantageously, in order to accelerate the recycling of the hardener, on a part 29 of the secondary hydraulic circuit 20, a branch 30 is established and on at least one of the sections that form this branch 30 and the part 29 of the circuit bypassed by this branch , a flow regulator 44, 45 is inserted so that in the bypass 30, the flow is greater than in the part 29 of the circuit 20 bypassed by this bypass 30 and at the head of the bypass and the bypassed part, we interpose a distributor 50 directing the oil to one or other of the sections 29, 30 namely at the time of recycling, the flow of the secondary circuit is passed through the bypass 30 while during mixing the flow of the secondary hydraulic circuit by part 29 of the secondary circuit which was bypassed by bypass 30.

L'installation comprend en outre des moyens de surveillance de la présence de la base et du durcisseur en tête du mélangeur et des moyens interdisant l'alimentation du mélangeur en cas de défaut d'au moins l'un de ces produits.The installation also comprises means for monitoring the presence of the base and the hardener at the top of the mixer and means preventing the supply of the mixer in the event of a fault in at least one of these products.

Le cycle se déroule comme suit :
- à l'état initial, la vanne P₇ du circuit de recyclage 54 est ouverte tandis que toutes les autres vannes P₁ à P₆ sont fermées,
- ens uite, le mélangeur 21 est mis en pression par ouverture des vannes P₂, P₃ d'amenée de la base 1 et du durcisseur 2 tandis que les autres vannes sont fermées,
- puis commence l'application par ouverture de la vanne P₁ de pulvérisation et,
- dès que la vanne P₁ de pulvérisation se referme pendant le temps préréglé, le circuit de temporisation enclenche le cycle de rinçage :
. tout d'abord par une phase de décompression, pendant laquelle les vannes P₂, P₃ d'amenée de la base et du durcisseur et la vanne P₁ de pulvérisation sont fermées tandis que les autres vannes P₄ à P₇ sont ouvertes,
- puis un rinçage chimique pendant lequel seules les vannes P₄, P₅ d'amenée des agents nettoyants et la vanne P₇ du recyclage sont ouvertes.The cycle takes place as follows:
- in the initial state, the valve P₇ of the recycling circuit 54 is open while all the other valves P₁ to P₆ are closed,
- next, the mixer 21 is put under pressure by opening the valves P₂, P₃ supplying the base 1 and the hardener 2 while the other valves are closed,
- then starts the application by opening the spraying valve P₁ and,
- as soon as the spraying valve P₁ closes during the preset time, the delay circuit starts the rinsing cycle:
. firstly by a decompression phase, during which the valves P₂, P₃ supplying the base and the hardener and the spraying valve P₁ are closed while the other valves P₄ to P₇ are open,
- then a chemical rinse during which only the valves P₄, P₅ for supplying the cleaning agents and the valve P₇ for recycling are open.

Le rinçage peut alors être répété plusieurs fois avant un rinçage final pendant lequel on ouvre en plus la vanne P₆ d'évacuation du produit contenu dans le mélangeur,
- enfin on termine le rinçage par fermeture des vannes précitées à l'exception de celle P₇ de recyclage pour retrouver l'état initial.The rinsing can then be repeated several times before a final rinsing during which the P₆ valve for discharging the product contained in the mixer is opened,
- Finally, the rinsing is completed by closing the aforementioned valves except for that of recycling P₇ to return to the initial state.

Le rinçage chimique se déroule de préférence pendant une courte durée par exemple de cinq secondes suivie d'une période de détrempage avec le solvant également de l'ordre de cinq secondes, ceci répété plusieurs fois et par exemple entre une à douze fois.The chemical rinsing preferably takes place for a short time, for example five seconds, followed by a period of soaking with the solvent also of the order of five seconds, this repeated several times and for example between one to twelve times.

Avantageusement, toutes les vannes commandées sont pourvues d'une double commande l'une principale électrique, l'autre pneumatique de secours.Advantageously, all of the controlled valves are provided with a double control, one main electric, the other spare tire.

Le mélangeur 21 comprend avantageusement un premier mélangeur 41 du type dit "à spires" communiquant aux produits des accélérations et freinages successifs favorisant leur mélange en sortie duquel est raccordée une conduite souple 42 de liaison à un second mélangeur 43 du type statique dit "diviseur" qui, par division du débit, perfectionne le mélange.The mixer 21 advantageously comprises a first mixer 41 of the so-called "whorl" type communicating to the products successive accelerations and braking promoting their mixing at the outlet of which is connected a flexible pipe 42 for connection to a second mixer 43 of the static type called "divider" which, by dividing the flow, perfects the mixture.

Claims (8)

1. Procédé de mise en présence d'un produit liquide de base et d'un durcisseur en vue de réaliser un produit à durcissement rapide à l'aide d'une installation comprenant principalement :
- un circuit de base (4) avec notamment un moteur (5) entraînant au moins une pompe (6) chass ant la base (1) contenue dans un réservoir (7) dans le dit circuit (4) conduisant à une buse (8) de pulvérisation sur le sol (9),
- en amont de la buse (8) est pévue une vanne (P₁) permettant d'interrompre la pulvérisation commandée par des circuits (35, 36)
- un circuit (24) pour le produit secondaire avec une pompe secondaire (26) chassant le second produit contenu dans un réservoir secondaire (27) par le circuit du produit secondaire (24),
- le circuit (4) du produit principal et le circuit (24) du produit secondaire conduisent tous deux à un même mélangeur (21) alimentant la buse de pulvérisation (8) sous le contrôle de la vanne commandée (P₁),
- les deux pompes (6, 26) ont alors évidemment des débits réglés pour respecter les proportions du mélange à réaliser,
selon lequel procédé, on alimente le réservoir secondaire (27) avec du durcisseur liquide (2) que le circuit de produit secondaire (24) conduit au mélangeur (21) qui le mélange à la base (1) avant de conduire le mélange à la buse (8) de pulvérisation, et au terme de la pulvérisation, on interrompt l'arrivé de la base (1) et du durcisseur (2) au mélangeur (21) et on enclenche un cycle de vidange et de nettoyage,
pendant lequel cycle de vidange et de nettoyage, on commande le retour du durcisseur vers son réservoir de manière à le recycler,
ce procédé étant CARACTERISE en ce que :
- dès l'interruption de la pulvérisation, on active un circuit de temporisation réglée sur une durée comprise entre une valeur nulle et une valeur au moins légèrement inférieure au temps de durcissement à l'abri de l'air,
- au terme de la durée prédéterminée, à l'aide de ce circuit de temporisation, on émet un signal à l'aide duquel :
. on interrompt l'arrivée de la base (1) et du durcisseur (2) au mélangeur (21) et
. on enclenche le cycle de vidange et de nettoyage comprenant notamment en alternance, des phases de lavage avec au moins un solvant et des phases de rinçage, pendant lequel cycle de nettoyage, on commande le susdit retour du durcisseur vers son réservoir de manière à le recycler.1. Method for bringing together a basic liquid product and a hardener in order to produce a quick-hardening product using an installation mainly comprising:
- a basic circuit (4) with in particular a motor (5) driving at least one pump (6) driving out the base (1) contained in a reservoir (7) in said circuit (4) leading to a nozzle (8 ) spraying on the ground (9),
- upstream of the nozzle (8) is provided a valve (P₁) making it possible to interrupt the spraying controlled by circuits (35, 36)
- a circuit (24) for the secondary product with a secondary pump (26) driving out the second product contained in a secondary tank (27) by the circuit of the secondary product (24),
the circuit (4) of the main product and the circuit (24) of the secondary product both lead to the same mixer (21) supplying the spray nozzle (8) under the control of the controlled valve (P₁),
the two pumps (6, 26) then obviously have flow rates adjusted to respect the proportions of the mixture to be produced,
according to which method, the secondary tank (27) is supplied with liquid hardener (2) which the secondary product circuit (24) leads to the mixer (21) which mixes it at the base (1) before driving the mixture to the spray nozzle (8), and at the end of spraying, the arrival of the base (1) and the hardener (2) is interrupted at the mixer (21) and a draining and cleaning cycle is started,
during which emptying and cleaning cycle, the hardener is returned to its tank so as to recycle it,
this process being CHARACTERIZED in that:
- as soon as the spraying is interrupted, a delay circuit is activated, set for a duration between a zero value and a value at least slightly less than the curing time in the absence of air,
- at the end of the predetermined duration, with the help of this timing circuit, a signal is transmitted using which:
. the arrival of the base (1) and the hardener (2) is interrupted at the mixer (21) and
. the emptying and cleaning cycle is initiated, comprising in particular alternately, washing phases with at least one solvent and rinsing phases, during which cleaning cycle, the above-mentioned return of the hardener to its tank is controlled so as to recycle it . 2. Procédé selon la revendication 1 dont :
- d'une part, le moteur (5) entraînant la pompe de base (4) consiste en un moteur hydraulique alimenté par un circuit hydraulique (10) comprenant sa pompe hydraulique (11) à débit variable prélevant de l'huile (12) dans un réservoir (13) pour la conduire vers le moteur hydraulique (5) aprés passage par un raccordement à une soupape de surété (14) puis par un réducteur de pression (15) et éventuellement un réducteur de débit (16), évitant l'emballement du moteur, et/ou un débitmètre (17) par exemple relié à un calculateur (18) à microprocesseur, et
- d'autre part, le moteur (25) entrainant la pompe de durcisseur (2) est également hydraulique et placé sur un circuit hydraulique secondaire (20),
dont par ailleurs :
- le circuit hydraulique principal (10) a son action synchronisée avec celle du circuit hydraulique secondaire (20),
ce circuit hydraulique secondaire (20), à l'exemple du circuit hydraulique principal, passe par un réducteur de pression (22) voire même par un réducteur de débit (23) évitant l'emballement du moteur (25) et/ou un débitmètre (28),
. ces deux circuits hydrauliques (10, 20) étant par exemple alimentés par une même pompe à débit variable (11) et placés sous le contrôle de la même soupape de sûreté (14),
ce procédé étant caractérisé en ce que sur une partie (29) du circuit hydraulique secondaire (20), on établit une dérivation (30) et sur au moins l'un des tronçons que forme cette dérivation (30) et la partie (29) de circuit contournée par cette dérivation, on régule le débit de sorte que dans la dérivation (30), le débit soit plus important que dans la partie (29) du circuit (20) contournée par cette dérivation (30) et au moment du recyclage, on fait passer le flux du circuit secondaire par la dérivation tandis que pendant le mélange on fait passer le flux du circuit hydraulique secondaire par la partie (29) du circuit secondaire qui était contourné par la dérivation.2. Method according to claim 1 including:
- on the one hand, the motor (5) driving the base pump (4) consists of a hydraulic motor supplied by a hydraulic circuit (10) comprising its hydraulic pump (11) with variable flow taking oil (12) in a tank (13) to lead it to the hydraulic motor (5) after passage by a connection to a safety valve (14) then by a pressure reducer (15) and possibly a flow reducer (16), avoiding the 'runaway of the engine, and / or a flow meter (17) for example connected to a computer (18) with microprocessor, and
- on the other hand, the motor (25) driving the hardener pump (2) is also hydraulic and placed on a secondary hydraulic circuit (20),
including:
- the main hydraulic circuit (10) has its action synchronized with that of the secondary hydraulic circuit (20),
this secondary hydraulic circuit (20), like the main hydraulic circuit, passes through a pressure reducer (22) or even through a flow reducer (23) avoiding the runaway of the engine (25) and / or a flow meter (28),
. these two hydraulic circuits (10, 20) being for example supplied by the same variable flow pump (11) and placed under the control of the same safety valve (14),
this process being characterized in that on a part (29) of the secondary hydraulic circuit (20), a branch is established (30) and on at least one of the sections that this branch (30) and the part (29) form of circuit bypassed by this bypass, the flow is regulated so that in the bypass (30), the flow is greater than in the part (29) of the circuit (20) bypassed by this bypass (30) and at the time of recycling , we pass the flow of the secondary circuit through the bypass while during mixing we passes the flow of the secondary hydraulic circuit through the part (29) of the secondary circuit which was bypassed by the bypass. 3.Procédé selon la revendication 1 ou 2 caractérisé en ce que pendant le cycle de nettoyage, on prévoit des phases de détrempage avec le solvant.3. Method according to claim 1 or 2 characterized in that during the cleaning cycle, soaking phases are provided with the solvent. 4. Moyens en vue de la mise en oeuvre du procédé selon selon l'une quelconque des revendications 1 à 3 comprenant :
- des vannes commandées (P₂, P₃) à l'arrivée à l'entrée du mélangeur (21) des circuits (4) de base (1) et (24) de durcisseur,
- des circuits (31, 32) d'amenée des produits utilisés lors du cycle de nettoyage, lesquels circuits (31, 32) sont raccordés en tête du mélangeur (21), en aval des vannes commandées (P₂, P₃) des circuits (4, 24) de base (1) et de durcisseur (2),
- des vannes commandées (P₄, P₅) contrôlant l'arrivée en tête du mélangeur des produits de nettoyage par leurs circuits (31, 32),
- raccordée en sortie du mélangeur, un circuit (33) d' évacuation des produits contenus dans le mélangeur,
ces moyens étant caractérisés en ce qu'ils comprennent en plus de la vanne commandée (P₁) qui en sortie du mélangeur (21) est prévue juste en amont de la buse (8) :
- relié aux circuits (35, 36) de commande de la vanne (P₁) contrôlant la pulvérisation, un circuit (37) de temporisation d'une part, pourvu d'un moyen (38) de réglage entre une durée nulle et une durée au moins légèrement inférieure à celle nécessaire au durcissement du mélange à l'abri de l'air et, d'autre part, émettant au terme de cette durée un signal,
- un circuit (39, 40) qui a réception de ce signal commande la fermeture des vannes commandées (P₂, P₃) d'arrivée au mélangeur de la base (1) et du durcisseur et enclenche un cycle de vidange et de nettoyage comprenant en alternance des phases de lavage avec au moins un solvant et des phases de rinçage.4. Means for implementing the method according to any one of claims 1 to 3 comprising:
- controlled valves (P₂, P₃) on arrival at the inlet of the mixer (21) of the basic circuits (4) (1) and (24) of hardener,
- circuits (31, 32) for supplying the products used during the cleaning cycle, which circuits (31, 32) are connected at the head of the mixer (21), downstream of the controlled valves (P₂, P₃) of the circuits ( 4, 24) base (1) and hardener (2),
- controlled valves (P₄, P₅) controlling the arrival at the top of the mixer of cleaning products through their circuits (31, 32),
- connected at the outlet of the mixer, a circuit (33) for discharging the products contained in the mixer,
these means being characterized in that they comprise, in addition to the controlled valve (P₁) which, at the outlet of the mixer (21) is provided just upstream of the nozzle (8):
- connected to the circuits (35, 36) for controlling the valve (P₁) controlling the spraying, a delay circuit (37) on the one hand, provided with means (38) for adjusting between a zero duration and a duration at least slightly lower than that necessary for curing the mixture in the absence of air and, on the other hand, emitting at the end of this period a signal,
- a circuit (39, 40) which, upon receipt of this signal, controls the closing of the controlled valves (P₂, P₃) arriving at the base mixer (1) and the hardener and initiates a draining and cleaning cycle comprising alternating washing phases with at least one solvent and rinsing phases. 5. Moyens selon la revendication 4 caractérisés en ce qu'ils comprennent :
- un réservoir (34) relié au circuit (33) d'évacuation des produits tels les mélanges de solvant et de durcisseur, et
- une vanne commandée (P₆) contrôlant l'évacuation vers le réservoir (34) des produits contenus dans le mélangeur par leur circuit (33).5. Means according to claim 4, characterized in that they comprise:
a reservoir (34) connected to the circuit (33) for evacuating products such as the solvent and hardener mixtures, and
- A controlled valve (P₆) controlling the evacuation to the reservoir (34) of the products contained in the mixer through their circuit (33). 6. Moyens selon la revendication 4 ou 5 caractérisés en ce qu'ils comprennent :
- une conduite (54) de recyclage du durcisseur raccordée au circuit (24) du durcisseur (2) en amont de la vanne commandée (P₂) contrôlant l'arrivée du durcisseur (2) au mélangeur (21), laquelle conduite de recyclage retourne au réservoir secondaire (27) du durcisseur,
- intercalée sur cette conduite (54) de recyclage du durcisseur, une vanne commandée (P₇) contrôlant le retour du durcisseur (2) à son réservoir (27).6. Means according to claim 4 or 5 characterized in that they comprise:
- a hardener recycling line (54) connected to the hardener circuit (24) (2) upstream of the controlled valve (P₂) controlling the arrival of the hardener (2) at the mixer (21), which recycling line returns to the secondary tank (27) of the hardener,
- interposed on this pipe (54) for recycling the hardener, a controlled valve (P₇) controlling the return of the hardener (2) to its tank (27). 7. Moyens selon la revendication 6 caractérisés en ce que sur une partie (29) du circuit hydraulique secondaire (20), on établit une dérivation (30) et sur au moins l'un des tronçons que forme cette dérivation (30) et la partie (29) de circuit contournée par cette dérivation, on intercale un régulateur de débit (44, 45) de sorte que dans la dérivation (30), le débit soit plus important que dans la partie (29) du circuit (20) contournée par cette dérivation (30) et en tête de la dérivation et de la partie contournée, on intercale un distributeur (50) dirigeant l'huile vers l'un ou l'autre des tronçons (29, 30) à savoir au moment du recyclage, on fait passer le flux du circuit secondaire par la dérivation tandis que pendant le mélange on fait passer le flux du circuit hydraulique secondaire par la partie (29) du circuit secondaire qui était contourné par la dérivation.7. Means according to claim 6 characterized in that on a part (29) of the secondary hydraulic circuit (20), a branch is established (30) and on at least one of the sections that form this branch (30) and the part (29) of circuit bypassed by this bypass, a flow regulator (44, 45) is inserted so that in the bypass (30), the flow is greater than in the part (29) of the circuit (20) bypassed by this bypass (30) and at the head of the bypass and the bypassed part, a distributor (50) is interposed directing the oil to one or other of the sections (29, 30), namely at the time of recycling , the flow of the secondary circuit is passed through the bypass while during mixing the flow of the secondary hydraulic circuit is passed through the part (29) of the secondary circuit which was bypassed by the bypass. 8. Moyens selon l'une quelconque des revendications 4 à 7 caractérisés en ce que le mélangeur (21) comprend avantageusement un premier mélangeur (41) du type dit "à spires" communiquant aux produits des accélérations et freinages successifs favorisant leur mélange en sortie duquel est raccordée une conduite souple (42) de liaison à un second mélangeur (43) du type statique dit "diviseur" qui, par division du débit, perfectionne le mélange. 9. Installation comprenant principalement :
- un circuit de base (4) avec notamment un moteur (5) entraînant au moins une pompe (6) chassant la base (1 ) contenue dans un réservoir (7) dans le dit circuit (4) conduisant à une buse (8) de pulvérisation sur le sol (9),
- en amont de la buse (8) est pévue une vanne commandée (P₁) permettant d'interrompre la pulvérisation,
- le moteur (5) entraînant la pompe de base (4) consiste par exemple en un moteur hydraulique alimenté par un circuit hydraulique (10) comprenant sa pompe hydraulique (11) à débit variable prélevant de l'huile (12) dans un réservoir (13) pour la conduire vers le moteur hydraulique (5) après passage par un raccordement à une soupape de surété (14) puis par un réducteur de pression (15) et éventuellement un réducteur de débit (16), évitant l'emballement du moteur, et/ou un débitmètre (17) par exemple relié à un calculateur (18) à microprocesseur,
- un circuit (24) pour le produit secondaire avec une pompe secondaire (26) chassant le second produit contenu dans un réservoir secondaire (27) par le circuit du produit secondaire (24),
- le circuit (4) du produit principal et le circuit (24) du produit secondaire conduisent tous deux à un même mélangeur (21) alimentant la buse de pulvérisation (8) sous le contrôle de la vanne commandée (P₁),
- les deux pompes (6, 26) ont alors évidemment des débits réglés pour respecter les proportions du mélange à réaliser et le circuit hydraulique principal (10) a son action synchronisée avec celle du circuit hydraulique secondaire (20),
- ce circuit hydraulique secondaire (20), à l'exemple du circuit hydraulique principal, passe par un réducteur de pression (22) voire même par un réducteur de débit (23) évitant l'emballement du moteur (25) et/ou un débitmètre (28),
- ces deux circuits hydrauliques (10, 20) sont par exemple alimentés par une même pompe à débit variable (11) et placés sous le contrôle de la même soupape de sûreté (14),
caractérisée en ce qu'elle est pourvue des moyens selon l'une quelconque des revendications 4 à 8.8. Means according to any one of claims 4 to 7 characterized in that the mixer (21) advantageously comprises a first mixer (41) of the so-called "whorl" type communicating to the products successive accelerations and brakes promoting their mixing at the outlet which is connected a flexible pipe (42) connecting to a second mixer (43) of the static type called "divider" which, by dividing the flow, improves the mixture. 9. Installation mainly comprising:
- a basic circuit (4) with in particular a motor (5) driving at least one pump (6) driving out the base (1) contained in a reservoir (7) in said circuit (4) leading to a nozzle (8) spraying on the ground (9),
- upstream of the nozzle (8) is provided a controlled valve (P₁) making it possible to interrupt the spraying,
- The motor (5) driving the base pump (4) consists for example of a hydraulic motor supplied by a hydraulic circuit (10) comprising its hydraulic pump (11) with variable flow taking oil (12) from a tank (13) to lead it to the hydraulic motor (5) after passing through a connection to a safety valve (14) then through a pressure reducer (15) and possibly a flow reducer (16), avoiding runaway of the motor, and / or a flow meter (17), for example connected to a microprocessor computer (18),
- a circuit (24) for the secondary product with a secondary pump (26) driving out the second product contained in a secondary tank (27) by the circuit of the secondary product (24),
the circuit (4) of the main product and the circuit (24) of the secondary product both lead to the same mixer (21) supplying the spray nozzle (8) under the control of the controlled valve (P₁),
the two pumps (6, 26) then obviously have flow rates adjusted to respect the proportions of the mixture to be produced and the main hydraulic circuit (10) has its action synchronized with that of the secondary hydraulic circuit (20),
- This secondary hydraulic circuit (20), like the main hydraulic circuit, passes through a pressure reducer (22) or even through a flow reducer (23) avoiding the runaway of the engine (25) and / or a flow meter (28),
these two hydraulic circuits (10, 20) are for example supplied by the same variable flow pump (11) and placed under the control of the same safety valve (14),
characterized in that it is provided with means according to any one of claims 4 to 8.
EP89402866A 1988-10-18 1989-10-17 Process for bringing together a liquid basic product and a hardener in order to obtain a rapid curing product, means for carrying out this process and apparatus provided with this means Expired - Lifetime EP0365422B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT89402866T ATE84335T1 (en) 1988-10-18 1989-10-17 METHOD FOR COMPOSING A LIQUID BASIC PRODUCT AND A HARDENING AGENT TO ACHIEVE A RAPID CURING PRODUCT, MEANS FOR CARRYING OUT THE METHOD AND DEVICE PROVIDED WITH SUCH MEANS.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8814215A FR2637820B1 (en) 1988-10-18 1988-10-18 PROCESS FOR PRESENTING A BASIC LIQUID PRODUCT AND A HARDENER WITH A VIEW TO MAKING A FAST-CURING PRODUCT, MEANS FOR CARRYING OUT THIS METHOD AND INSTALLATION PROVIDED WITH SUCH MEANS
FR8814215 1988-10-18

Publications (2)

Publication Number Publication Date
EP0365422A1 true EP0365422A1 (en) 1990-04-25
EP0365422B1 EP0365422B1 (en) 1993-01-07

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EP89402866A Expired - Lifetime EP0365422B1 (en) 1988-10-18 1989-10-17 Process for bringing together a liquid basic product and a hardener in order to obtain a rapid curing product, means for carrying out this process and apparatus provided with this means

Country Status (4)

Country Link
US (1) US5126173A (en)
EP (1) EP0365422B1 (en)
AT (1) ATE84335T1 (en)
FR (1) FR2637820B1 (en)

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CN103526683A (en) * 2013-11-01 2014-01-22 山东路美交通设施有限公司 Self-walking two-component external-mix marking equipment

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US8014885B2 (en) * 1998-12-23 2011-09-06 Microblend Technologies, Inc. Mobile paint system utilizing slider attribute prompts and reflectance memory storage
US7097734B2 (en) * 2001-05-16 2006-08-29 Hill David A System and method for forming wood products
US7427424B2 (en) * 2003-08-07 2008-09-23 Hill David A Systems and methods of bonding materials
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CH701245B1 (en) * 2009-06-11 2013-05-31 Stefan Schonert Plant for the filling of the liner tubes.
CN102535311B (en) * 2011-12-21 2014-12-17 山西华路祥交通科技有限公司 Control system of mixing and spraying equipment for bi-component or multi-component thermosetting binding material
US11148161B2 (en) * 2018-07-27 2021-10-19 Avant-Garde Ip Llc Height adjustment system for one or more spray guns used in a line striper
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CN111974600A (en) * 2020-07-17 2020-11-24 重庆海浦洛自动化科技有限公司 Pipeline cleanable paint conveying and mixing system and pipeline cleaning method thereof

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CN103526683A (en) * 2013-11-01 2014-01-22 山东路美交通设施有限公司 Self-walking two-component external-mix marking equipment

Also Published As

Publication number Publication date
EP0365422B1 (en) 1993-01-07
FR2637820A1 (en) 1990-04-20
FR2637820B1 (en) 1991-04-26
ATE84335T1 (en) 1993-01-15
US5126173A (en) 1992-06-30

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