EP0432027A1 - High-pressure cleaner equipped with an assembly for recuperating cleaning liquid and waste - Google Patents

High-pressure cleaner equipped with an assembly for recuperating cleaning liquid and waste Download PDF

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Publication number
EP0432027A1
EP0432027A1 EP90403428A EP90403428A EP0432027A1 EP 0432027 A1 EP0432027 A1 EP 0432027A1 EP 90403428 A EP90403428 A EP 90403428A EP 90403428 A EP90403428 A EP 90403428A EP 0432027 A1 EP0432027 A1 EP 0432027A1
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EP
European Patent Office
Prior art keywords
cleaner according
liquid
tank
cleaning
pipe
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
EP90403428A
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German (de)
French (fr)
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EP0432027B1 (en
Inventor
Jean Bonnant
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Orano Cycle SA
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Compagnie Generale des Matieres Nucleaires SA
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Publication of EP0432027A1 publication Critical patent/EP0432027A1/en
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    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L11/00—Machines for cleaning floors, carpets, furniture, walls, or wall coverings
    • A47L11/29—Floor-scrubbing machines characterised by means for taking-up dirty liquid
    • A47L11/30—Floor-scrubbing machines characterised by means for taking-up dirty liquid by suction
    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21F—PROTECTION AGAINST X-RADIATION, GAMMA RADIATION, CORPUSCULAR RADIATION OR PARTICLE BOMBARDMENT; TREATING RADIOACTIVELY CONTAMINATED MATERIAL; DECONTAMINATION ARRANGEMENTS THEREFOR
    • G21F9/00—Treating radioactively contaminated material; Decontamination arrangements therefor
    • G21F9/28—Treating solids
    • G21F9/30—Processing
    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21F—PROTECTION AGAINST X-RADIATION, GAMMA RADIATION, CORPUSCULAR RADIATION OR PARTICLE BOMBARDMENT; TREATING RADIOACTIVELY CONTAMINATED MATERIAL; DECONTAMINATION ARRANGEMENTS THEREFOR
    • G21F9/00—Treating radioactively contaminated material; Decontamination arrangements therefor
    • G21F9/001—Decontamination of contaminated objects, apparatus, clothes, food; Preventing contamination thereof
    • G21F9/005—Decontamination of the surface of objects by ablation

Definitions

  • the invention relates to a high pressure cleaner designed to carry out any surface treatment, for example on building facades, this device being particularly suitable for use in a nuclear environment, in particular for treating rough concrete surfaces or screeds without coating. and contaminated.
  • a first method of sanitation which consists in degrading the surface by means of a jackhammer, has many drawbacks.
  • the time necessary for the destruction of the surface is relatively long and the intervention equipment as well as the personnel are in direct contact with the contaminated medium.
  • the volume of waste produced also poses the problem of disposal and containment of this waste.
  • the surface thus treated must be completely redone.
  • a third known technique consists of cleaning up contaminated surfaces using a water jet under high pressure. Apart from the fact that this technique also leads to placing intervention personnel in direct contact with the environment, the projected water poses the double problem of contamination of non-contaminated surfaces and its evacuation. In particular, the structures of certain cells are not adapted to the recovery of effluents and the latter run the risk of blocking the evacuations on the ground when these exist.
  • US-A-3,073,727 has described a swimming pool cleaning device comprising a central chamber into which an acid is used to clean the walls of the swimming pool and a connected peripheral suction chamber to a pump allowing the cleaning liquid to be sucked without it being liable to mix with the pool water.
  • the pump sucks an acid solution, that is to say a liquid medium and, moreover, nothing is provided to carry out any treatment on the solution sucked. Consequently, the problem posed by the evacuation of the waste resulting from the cleaning of a surface not submerged by a jet of water under high pressure is not resolved there.
  • the subject of the invention is precisely a high-pressure cleaner making it possible to clean a non-submerged surface, for example in a nuclear environment, by ensuring the recovery of effluents, regardless of the nature of the contaminated medium and possibly remotely, for example by a remote manipulator.
  • a high pressure cleaner comprising a cleaning head comprising a central cleaning chamber delimited by an intermediate wall and into which opens a pipe for injecting a cleaning liquid, and a peripheral effluent rebreathing chamber formed between the intermediate wall and an outer wall and into which opens a suction pipe connected to suction means, characterized in that the suction means are incorporated in a recovery assembly effluent which comprises a decanter tank in the upper part of which open said suction pipe and a pipe for discharging gaseous effluents communicating with the suction means, a tube for discharging liquid effluents connected to means pumping plunging near the bottom of the decanter, inside an organ e annular filtering retaining solid effluents.
  • a recovery assembly effluent which comprises a decanter tank in the upper part of which open said suction pipe and a pipe for discharging gaseous effluents communicating with the suction means, a tube for discharging liquid effluents connected to
  • the decanter tank is a cylindrical tank, of vertical axis, into which the suction pipe opens in a circumferential direction, so as to initiate a cyclone effect.
  • Liquid-gas separation means as well as filtration means can be placed in the exhaust gas evacuation pipe, a liquid phase recycling pipe connecting a storage pot associated with said liquid-gas separation means to the tank decanter.
  • the activation of the pumping means can be triggered automatically by a high liquid level detector placed in the decanter.
  • the outer wall of the cleaning head is able to cooperate with a surface to be cleaned by sealing means and the intermediate wall is then moved away from this same surface to delimit a passage through which the central cleaning chamber communicates permanently. with the peripheral rebreathing chamber.
  • the injection pipe opens into the cleaning chamber by a rotating nozzle whose rotation is controlled by the flow of the cleaning liquid, this nozzle having at least two orifices oriented in such a way that the jets from these orifices hit the surface to be cleaned in the immediate vicinity of the passage.
  • the improvement of the safety of the intervention personnel is advantageously obtained by connecting the cleaning head to a control gun by an operating pole constituting the injection pipe, a high pressure generator supplying the control gun with cleaning liquid. .
  • the high pressure cleaner mainly comprises a cleaning assembly generally designated by the reference 10 and a set of recovery of effluents generally designated by reference 12.
  • the cleaning assembly 10 comprises a high pressure generator 14, of conventional design, delivering water under high pressure, which is sent to a control gun 16 through a flexible hose 18.
  • the control gun 16 is connected to a cleaning head 20 by a rigid operating pole 22 whose length can be, for example, at least 1.50 m.
  • the operating pole 22 internally delimits an injection pipe 24 for pressurized water, the water supply of which is controlled by a control member such as a trigger placed on the control gun 16.
  • the end of the operating pole 22 supporting the cleaning head 20 is provided with a nozzle 26 through which the injection pipe 24 defined inside the pole 22 opens into the cleaning head 20.
  • the nozzle 26 is rotatably mounted at the end of the operating pole 22, and it is pierced with two holes 28 whose orientation is inclined relative to the 'axis of the nozzle, which has the effect of causing an automatic rotation of the nozzle 26 when water under high pressure is admitted into the injection pipe 24.
  • the operating pole 22 is folded close to its end carrying the cleaning head 20, so that the latter can be easily applied against a surface to be cleaned S when the gun 16 is held by an operator.
  • the cleaning head 20 mainly comprises a substantially frustoconical outer wall 30, the end of which is of smaller diameter is fixed to the end of the operating pole, for example by a base 32.
  • the opposite end of the frustoconical outer wall 30 is open and reinforced externally by a ring 34 on which are mounted three rollers 36 suitable for being applied against the surface S to be cleaned and only one of which is shown in FIG. 2
  • the crown 34 also supports, on the side of the surface S, an annular sealing member 38 constituted for example by a brush making it possible to confine the volume delimited inside the wall 30 relative to the outside of this wall. .
  • the cleaning head 20 also comprises an intermediate wall 40, also of substantially frustoconical shape, placed inside the volume delimited by the external wall 30 and whose end of smaller diameter is fixed on the base 32, around the rotary nozzle 26.
  • the larger diameter end of the intermediate wall 40 is open and located at a given distance d from the surface S to be cleaned when the rollers 36 are in contact with this surface. There is thus delimited, between the edge of the intermediate wall 40 adjacent to the surface S and this latter surface, an annular passage 42 by which a central cleaning chamber 44 formed inside the intermediate wall 40 communicates permanently with a chamber. effluent rebreathing device 46 formed between the intermediate wall 40 and the outer wall 30.
  • the jets of water under high pressure leaving the orifices 28 of the rotating nozzle 26 strike the surface S to be cleaned in the immediate vicinity of the passage 42, that is to say say near the end of larger diameter of the intermediate wall 40.
  • the recovery of effluents that constitute water and waste resulting cleaning of the surface S is easily carried out through the passage 42, then through the chamber 46.
  • the external wall 30 comprises a tube 50 to which is connected a suction pipe constituted by a flexible pipe 52.
  • the recovery assembly 12 firstly comprises a decanter tank 54 advantageously constituted by a cylindrical tank, of vertical axis, the bottom 54a of which is slightly sloping towards the axis of this tank.
  • the tank 54 is sealed and its cylindrical wall is crossed, near its upper end, by an effluent inlet pipe 56 to which the flexible pipe 52 is connected. More specifically, the end of this pipe 56 located inside the decanter tank 54 is curved in a substantially circumferential direction so as to initiate a cyclone effect when the effluents arrive via the flexible pipe 52 in the decanter tank.
  • a pipe 58 for discharging the gaseous effluents also opens into the upper part of the decanter tank 54, through the cover of the latter, at a location substantially diametrically opposite to the pipe 56.
  • This pipe 58 extends to a vacuum cleaner tire 72 by successively passing through a water separator 60 and filters 70.
  • a storage pot 62 Inside the water separator 60, the microdroplets of liquid entrained by the air flow are separated from the latter and collected in a storage pot 62.
  • This storage pot 62 is placed at a level higher than that of the settling tank 54 and it is connected to the latter by a recycling line 64 controlled by a valve 66 normally closed.
  • Line 64 passes tightly through the cover of the decanting tank 54, and opens into the bottom of the storage pot 62, so that the latter is automatically emptied into the decanting tank when the valve 66 is opened.
  • the filters 70 are nuclear grade filters used to retain solid particles possibly entrained by the gaseous effluents.
  • the pneumatic vacuum cleaner 72 operates by venturi effect, by means of a compressed air injection pipe 74 controlled by a valve 76.
  • the opening of this valve has the effect of injecting compressed air into the vacuum cleaner 72, which creates a vacuum through which the effluents from the cleaning head 20 are sucked in by the peripheral chamber 46, the suction line 52, the decanter tank 54 and the line 58, passing through the separator 60 and the filters 70.
  • the compressed air injected into the vacuum cleaner 72 by the piping 74 mixes with the air sucked by the pipeline 58 to be discharged outside through a pipe 78.
  • the part of the recovery assembly 12 which has just been described makes it possible, by means of the vacuum cleaner 72, to create a vacuum sufficient to suck up the effluents produced by the cleaning head 20, that is to say the liquid. cleaning and waste resulting from the impact of this liquid on the surface S.
  • These effluents which contain both a gaseous phase, a liquid phase and a solid phase, are first separated in the decanter tank 54 which retains most of the liquid and solid phases.
  • the small part of the liquid phase remaining in the gas phase is recovered by the separator 60 and the small part of the solid phase remaining in the gas phase is recovered by the filters 70.
  • the recovery assembly 12 also makes it possible to separate the liquid and solid phases retained in the decanter tank 54.
  • a vertical tube 80 disposed along the axis of the tank 54 passes through the cover of the latter in a sealed manner and plunges to near the bottom 54a of this tank.
  • This tube 80 communicates at its upper end with a hydro-ejector 82 placed in a circuit 84, connected upstream of the hydro-ejector 82, to a source 86 of pressurized water.
  • Valves 88 and 90 normally closed, are placed in the circuit 84 respectively upstream and downstream of the hydro-ejector 82. This arrangement allows, when the valves 88 and 90 are opened, to suck the liquid contained in the decanter tank 54 in order, for example, to recycle it.
  • the latter contains an annular filter 92, made for example of packed polyester wool, which extends over the entire height of the tank around the dip tube 80.
  • This filter 92 can in particular be placed between two concentric perforated sheets which provide mechanical support without preventing the flow of water.
  • the coarse dirt settles at the bottom of the tank 54 and the water migrates through the filter 92 which offers little resistance to water while retaining the dirt.
  • the tube 80 only sucks water loaded with very fine particles.
  • the vacuum cleaner 72 For the emptying of the water contained in the decanting tank 54 to be possible, the vacuum cleaner 72 must be stopped. Consequently, the valves 88 and 90 controlling the suction of the water recovered in the tank 54 are normally closed when the vacuum cleaner 72 works. When the tank 54 is filled with water, the valve 76 controlling the actuation of the vacuum cleaner 72 is closed in turn before the valves 88 and 90 are opened.
  • a top 94 liquid level detector 94 is placed in the upper part of the decanting tank 54 which can be simply connected to an alarm warning the operator of the need to empty the decanting tank, or which can automatically trigger the closure of valve 76 followed by the opening of valves 88 and 90, thus making the operation of the automatic cleaner.
  • a safety device has also been provided making it possible to automatically shut off the inlet of the pipe 58 by which the air is sucked out of the decanting tank, in the case where the level detector 94 would be faulty and also in order to overcome any non-compliance with the alarm triggered by this detector.
  • This safety device comprises a floating ball 96 which is placed in a perforated cage 98 located in the extension of the pipe 58, immediately below the cover of the decanter tank 54. When the level in the tank 54 rises abnormally , the floating ball 96 comes to close the lower end of the pipe 58. The vacuum created by the vacuum cleaner 72 then keeps this ball in the closed position of the pipe 58, while all suction ceases in the peripheral rebreathing chamber 46 of the cleaning head 20.
  • the high-pressure cleaner according to the invention makes it possible to solve the problem posed by the waste produced by the recuperator in a simple and effective manner.
  • this waste is separated according to their nature, so that some of them can be recycled or disposed of without risk for intervention personnel.
  • the design of the cleaning assembly 10 allows intervention personnel to work at a relatively large distance from the surface to be cleaned and even authorizes the replacement of this personnel by a remote handling device such as a remote manipulator. .
  • the high pressure cleaner according to the invention can be used whatever the nature of the medium which it is desired to clean, since the separation of the different phases carried out in the recovery assembly 12 makes it possible to control particularly efficiently the management of effluents.
  • this device has the advantage of all existing high pressure cleaners which consists in not degrading the surfaces thus sanitized, which eliminates the need to redo these surfaces after intervention.
  • the invention is not limited to the embodiment which has just been described by way of example, but covers all its variants.
  • the recovery assembly described can be used with a high pressure cleaner comprising a cleaning head with a structure slightly different from that which has been described.
  • the means used to separate the different phases of the recovered effluents can undergo certain modifications without departing from the scope of the invention.

Abstract

High-pressure cleaner comprises a cleaning unit (10) and an effluent recovery unit (12). The cleaning unit (10) consists chiefly of a cleaning head (20) which has a central chamber (44) in which a nozzle (26) sprays a cleaning liquid at high pressure, the effluents being recovered in a peripheral chamber (46) connected to a separating vessel (54) of the recovery unit (12). The vessel (54) itself is connected to a suction unit (72) through a liquid-gas separator (60) and filters (70). The liquid phase of the effluents is periodically recovered via a tube (80) immersed in the vessel (54) and connected to a hydroejector (82). The solid phase of the effluents is retained by a filter (92) surrounding the tube (80). <IMAGE>

Description

DESCRIPTIONDESCRIPTION

L'invention concerne un nettoyeur haute pression conçu pour effectuer tout traitement de surfaces, par exemple sur des façades de bâtiments, ce dispositif étant particulièrement adapté pour être utilisé en milieu nucléaire, notamment pour traiter des surfaces de béton brut ou des chapes dépourvues de revêtement et contaminées.The invention relates to a high pressure cleaner designed to carry out any surface treatment, for example on building facades, this device being particularly suitable for use in a nuclear environment, in particular for treating rough concrete surfaces or screeds without coating. and contaminated.

Parmi les techniques existantes permettant d'assainir des surfaces de type béton brut ou chape sans revêtement en milieu nucléaire, aucune n'est réellement satisfaisante.Among the existing techniques making it possible to remediate surfaces of the raw concrete or screed type without coating in a nuclear environment, none is really satisfactory.

Ainsi, une première méthode d'assainissement, qui consiste à dégrader la surface au moyen d'un marteau piqueur, présente de nombreux inconvénients. En particulier, le temps nécessaire à la destruction de la surface est relativement long et le matériel d'intervention ainsi que le personnel sont en contact direct avec le milieu contaminé. Le volume des déchets produits pose en outre le problème de l'évacuation et du confinement de ces déchets. Enfin, la surface ainsi traitée doit être entièrement refaite.Thus, a first method of sanitation, which consists in degrading the surface by means of a jackhammer, has many drawbacks. In particular, the time necessary for the destruction of the surface is relatively long and the intervention equipment as well as the personnel are in direct contact with the contaminated medium. The volume of waste produced also poses the problem of disposal and containment of this waste. Finally, the surface thus treated must be completely redone.

Une autre technique connue pour assainir de telles surfaces consiste à utiliser des acides phosphoriques ou nitriques. Une telle intervention conduit cependant à priver la surface de toute résistance mécanique. La surface se trouve donc dégradée et doit être refaite comme avec la technique précédente. Les problèmes de l'évacuation des déchets et celui du contact direct du personnel d'intervention avec le milieu se posent également.Another known technique for cleaning up such surfaces consists in using phosphoric or nitric acids. However, such intervention leads to depriving the surface of any mechanical resistance. The surface is therefore degraded and must be redone as with the previous technique. The problems of waste disposal and that of direct contact of intervention personnel with the environment also arise.

Une troisième technique connue consiste à assainir les surfaces contaminées au moyen d'un jet d'eau sous haute pression. En dehors du fait que cette technique conduit également à placer le personnel d'intervention en contact direct avec le milieu, l'eau projetée pose le double problème de la contamination des surfaces non contaminées et de son évacuation. En particulier, les structures de certaines cellules ne sont pas adaptées à la récupération d'effluents et ces derniers risquent de boucher les évacuations au sol lorsque celles-ci existent.A third known technique consists of cleaning up contaminated surfaces using a water jet under high pressure. Apart from the fact that this technique also leads to placing intervention personnel in direct contact with the environment, the projected water poses the double problem of contamination of non-contaminated surfaces and its evacuation. In particular, the structures of certain cells are not adapted to the recovery of effluents and the latter run the risk of blocking the evacuations on the ground when these exist.

De façon générale, toutes les techniques existantes posent donc à la fois des problèmes liés à l'évacuation des déchets produits et à la sécurité radiologique du personnel d'intervention.In general, all the existing techniques therefore pose both problems linked to the disposal of the waste produced and to the radiological safety of the intervention personnel.

En dehors du milieu nucléaire, on a décrit dans le document US-A-3 073 727 un dispositif de nettoyage de piscines comprenant une chambre centrale dans laquelle on introduit un acide servant à nettoyer les parois de la piscine et une chambre périphérique de réaspiration reliée à une pompe permettant d'aspirer le liquide de nettoyage sans que celui-ci ne risque de se mélanger à l'eau de la piscine.Outside the nuclear environment, US-A-3,073,727 has described a swimming pool cleaning device comprising a central chamber into which an acid is used to clean the walls of the swimming pool and a connected peripheral suction chamber to a pump allowing the cleaning liquid to be sucked without it being liable to mix with the pool water.

Dans ce dispositif, prévu pour fonctionner sous l'eau, la pompe aspire une solution acide, c'est-à-dire un milieu liquide et, en outre, rien n'est prévu pour effectuer un traitement quelconque sur la solution aspirée. Par conséquent, le problème posé par l'évacuation des déchets résultant du nettoyage d'une surface non immergée par un jet d'eau sous haute pression n'y est pas résolu.In this device, intended to operate under water, the pump sucks an acid solution, that is to say a liquid medium and, moreover, nothing is provided to carry out any treatment on the solution sucked. Consequently, the problem posed by the evacuation of the waste resulting from the cleaning of a surface not submerged by a jet of water under high pressure is not resolved there.

L'invention a précisément pour objet un nettoyeur haute pression permettant de nettoyer une surface non immergée, par exemple en milieu nucléaire, en assurant la récupération des effluents, indépendamment de la nature du milieu contaminé et éventuellement à distance, par exemple au moyen d'un télémanipulateur.The subject of the invention is precisely a high-pressure cleaner making it possible to clean a non-submerged surface, for example in a nuclear environment, by ensuring the recovery of effluents, regardless of the nature of the contaminated medium and possibly remotely, for example by a remote manipulator.

Selon l'invention, on parvient à ce résultat grâce à un nettoyeur haute pression comportant une tête de nettoyage comprenant une chambre centrale de nettoyage délimitée par une paroi intermédiaire et dans laquelle débouche une canalisation d'injection d'un liquide de nettoyage, et une chambre périphérique de réaspiration d'effluents formée entre la paroi intermédiaire et une paroi extérieure et dans laquelle débouche une canalisation d'aspiration reliée à des moyens d'aspiration, caractérisé par le fait que les moyens d'aspiration sont incorporés dans un ensemble de récupération des effluents qui comprend une cuve décanteuse dans la partie supérieure de laquelle débouchent ladite canalisation d'aspiration et une canalisation d'évacuation d'effluents gazeux communiquant avec les moyens d'aspiration, un tube d'évacuation d'effluents liquides relié à des moyens de pompage plongeant jusqu'à proximité du fond de la cuve décanteuse, à l'intérieur d'un organe de filtrage annulaire retenant des effluents solides.According to the invention, this is achieved by means of a high pressure cleaner comprising a cleaning head comprising a central cleaning chamber delimited by an intermediate wall and into which opens a pipe for injecting a cleaning liquid, and a peripheral effluent rebreathing chamber formed between the intermediate wall and an outer wall and into which opens a suction pipe connected to suction means, characterized in that the suction means are incorporated in a recovery assembly effluent which comprises a decanter tank in the upper part of which open said suction pipe and a pipe for discharging gaseous effluents communicating with the suction means, a tube for discharging liquid effluents connected to means pumping plunging near the bottom of the decanter, inside an organ e annular filtering retaining solid effluents.

Dans cette installation, le passage des effluents par la cuve décanteuse permet de séparer les solides, qui doivent par exemple être stockés en conteneurs, des effluents gazeux et liquides qui peuvent respectivement être évacués à l'atmosphère et récupérés.In this installation, the passage of effluents through the decanting tank makes it possible to separate the solids, which must for example be stored in containers, gaseous and liquid effluents which can respectively be evacuated to the atmosphere and recovered.

Avantageusement, la cuve décanteuse est une cuve cylindrique, d'axe vertical, dans laquelle la canalisation d'aspiration débouche selon une direction circonférentielle, de façon à amorcer un effet cyclone.Advantageously, the decanter tank is a cylindrical tank, of vertical axis, into which the suction pipe opens in a circumferential direction, so as to initiate a cyclone effect.

Des moyens de séparation liquide-gaz ainsi que des moyens de filtration peuvent être placés dans la canalisation d'évacuation des effluents gazeux, une conduite de recyclage de la phase liquide reliant un pot de stockage associé auxdits moyens de séparation liquide-gaz à la cuve décanteuse.Liquid-gas separation means as well as filtration means can be placed in the exhaust gas evacuation pipe, a liquid phase recycling pipe connecting a storage pot associated with said liquid-gas separation means to the tank decanter.

La mise en action des moyens de pompage peut être déclenchée automatiquement par un détecteur de niveau haut de liquide placé dans la cuve décanteuse.The activation of the pumping means can be triggered automatically by a high liquid level detector placed in the decanter.

Avantageusement, la paroi extérieure de la tête de nettoyage est apte à coopérer avec une surface à nettoyer par des moyens d'étanchéité et la paroi intermédiaire est alors écartée de cette même surface pour délimiter un passage par lequel la chambre centrale de nettoyage communique en permanence avec la chambre périphérique de réaspiration.Advantageously, the outer wall of the cleaning head is able to cooperate with a surface to be cleaned by sealing means and the intermediate wall is then moved away from this same surface to delimit a passage through which the central cleaning chamber communicates permanently. with the peripheral rebreathing chamber.

Afin d'accroître l'efficacité du nettoyage, la canalisation d'injection débouche dans la chambre de nettoyage par une buse tournante dont la rotation est commandée par l'écoulement du liquide de nettoyage, cette buse présentant au moins deux orifices orientés de telle sorte que les jets issus de ces orifices heurtent la surface à nettoyer au voisinage immédiat du passage.In order to increase the cleaning efficiency, the injection pipe opens into the cleaning chamber by a rotating nozzle whose rotation is controlled by the flow of the cleaning liquid, this nozzle having at least two orifices oriented in such a way that the jets from these orifices hit the surface to be cleaned in the immediate vicinity of the passage.

L'amélioration de la sécurité du personnel d'intervention est obtenue avantageusement en reliant la tête de nettoyage à un pistolet de commande par une perche de manoeuvre constituant la canalisation d'injection, un générateur haute pression alimentant le pistolet de commande en liquide de nettoyage.The improvement of the safety of the intervention personnel is advantageously obtained by connecting the cleaning head to a control gun by an operating pole constituting the injection pipe, a high pressure generator supplying the control gun with cleaning liquid. .

Un mode de réalisation préféré de l'invention va à présent être décrit, à titre d'exemple non limitatif en se référant aux dessins annexés, dans lesquels:

  • - la figure 1 est une vue schématique, partiellement en coupe, représentant un nettoyeur haute pression réalisé conformément à l'invention; et
  • - la figure 2 est une vue en coupe agrandie de la tête de nettoyage du nettoyeur de la figure 1.
A preferred embodiment of the invention will now be described, by way of nonlimiting example with reference to the appended drawings, in which:
  • - Figure 1 is a schematic view, partially in section, showing a high pressure cleaner produced in accordance with the invention; and
  • - Figure 2 is an enlarged sectional view of the cleaning head of the cleaner of Figure 1.

En se référant tout d'abord à la figure 1, on voit que le nettoyeur haute pression selon l'invention comprend principalement un ensemble de nettoyage désigné de façon générale par la référence 10 et un ensemble de récupération des effluents désigné de façon générale par la référence 12.Referring first to FIG. 1, it can be seen that the high pressure cleaner according to the invention mainly comprises a cleaning assembly generally designated by the reference 10 and a set of recovery of effluents generally designated by reference 12.

L'ensemble de nettoyage 10 comprend un générateur haute pression 14, de conception classique, délivrant de l'eau sous haute pression, qui est envoyée à un pistolet de commande 16 au travers d'un tuyau flexible 18. Le pistolet de commande 16 est relié à une tête de nettoyage 20 par une perche de manoeuvre rigide 22 dont la longueur peut être, par exemple, d'au moins 1,50 m. La perche de manoeuvre 22 délimite intérieurement une canalisation d'injection 24 de l'eau sous pression, dont l'alimentation en eau est contrôlée par un organe de commande tel qu'une gachette placée sur le pistolet de commande 16.The cleaning assembly 10 comprises a high pressure generator 14, of conventional design, delivering water under high pressure, which is sent to a control gun 16 through a flexible hose 18. The control gun 16 is connected to a cleaning head 20 by a rigid operating pole 22 whose length can be, for example, at least 1.50 m. The operating pole 22 internally delimits an injection pipe 24 for pressurized water, the water supply of which is controlled by a control member such as a trigger placed on the control gun 16.

En se référant à la figure 2, on voit que l'extrémité de la perche de manoeuvre 22 supportant la tête de nettoyage 20 est munie d'une buse 26 au travers de laquelle la canalisation d'injection 24 définie à l'intérieur de la perche 22 débouche dans la tête de nettoyage 20. De façon plus précise, la buse 26 est montée tournante à l'extrémité de la perche de manoeuvre 22, et elle est percée de deux orifices 28 dont l'orientation est inclinée par rapport à l'axe de la buse, ce qui a pour effet de provoquer une mise en rotation automatique de la buse 26 lorsque de l'eau sous haute pression est admise dans la canalisation d'injection 24.Referring to FIG. 2, it can be seen that the end of the operating pole 22 supporting the cleaning head 20 is provided with a nozzle 26 through which the injection pipe 24 defined inside the pole 22 opens into the cleaning head 20. More specifically, the nozzle 26 is rotatably mounted at the end of the operating pole 22, and it is pierced with two holes 28 whose orientation is inclined relative to the 'axis of the nozzle, which has the effect of causing an automatic rotation of the nozzle 26 when water under high pressure is admitted into the injection pipe 24.

La perche de manoeuvre 22 est repliée à proximité de son extrémité portant la tête de nettoyage 20, de telle sorte que cette dernière puisse être appliquée aisément contre une surface à nettoyer S lorsque le pistolet 16 est tenu par un opérateur.The operating pole 22 is folded close to its end carrying the cleaning head 20, so that the latter can be easily applied against a surface to be cleaned S when the gun 16 is held by an operator.

La tête de nettoyage 20 comporte principalement une paroi extérieur 30 sensiblement tronconique, dont l'extrémité de plus petit diamètre est fixée à l'extrémité de la perche de manoeuvre, par exemple par une embase 32. L'extrémité opposée de la paroi extérieure tronconique 30 est ouverte et renforcée extérieurement par une couronne 34 sur laquelle sont montées trois roulettes 36 aptes à être appliquées contre la surface S à nettoyer et dont l'une seulement est représentée sur la figure 2. La couronne 34 supporte également, du côté de la surface S, un organe d'étanchéité annulaire 38 constitué par exemple par un balai permettant de confiner le volume délimité à l'intérieur de la paroi 30 par rapport à l'extérieur de cette paroi.The cleaning head 20 mainly comprises a substantially frustoconical outer wall 30, the end of which is of smaller diameter is fixed to the end of the operating pole, for example by a base 32. The opposite end of the frustoconical outer wall 30 is open and reinforced externally by a ring 34 on which are mounted three rollers 36 suitable for being applied against the surface S to be cleaned and only one of which is shown in FIG. 2 The crown 34 also supports, on the side of the surface S, an annular sealing member 38 constituted for example by a brush making it possible to confine the volume delimited inside the wall 30 relative to the outside of this wall. .

La tête de nettoyage 20 comprend également une paroi intermédiaire 40, également de forme sensiblement tronconique, placée à l'intérieur du volume délimité par la paroi extérieure 30 et dont l'extrémité de plus petit diamètre est fixée sur l'embase 32, autour de la buse rotative 26.The cleaning head 20 also comprises an intermediate wall 40, also of substantially frustoconical shape, placed inside the volume delimited by the external wall 30 and whose end of smaller diameter is fixed on the base 32, around the rotary nozzle 26.

L'extrémité de plus grand diamètre de la paroi intermédiaire 40 est ouverte et située à une distance d donnée de la surface S à nettoyer lorsque les roulettes 36 sont en contact avec cette surface. On délimite ainsi, entre le bord de la paroi intermédiaire 40 adjacent à la surface S et cette dernière surface, un passage annulaire 42 par lequel une chambre centrale de nettoyage 44 formée à l'intérieur de la paroi intermédiaire 40 communique en permanence avec une chambre périphérique 46 de réaspiration d'effluents formée entre la paroi intermédiaire 40 et la paroi extérieure 30.The larger diameter end of the intermediate wall 40 is open and located at a given distance d from the surface S to be cleaned when the rollers 36 are in contact with this surface. There is thus delimited, between the edge of the intermediate wall 40 adjacent to the surface S and this latter surface, an annular passage 42 by which a central cleaning chamber 44 formed inside the intermediate wall 40 communicates permanently with a chamber. effluent rebreathing device 46 formed between the intermediate wall 40 and the outer wall 30.

Comme l'illustrent schématiquement les flèches 48 sur la figure 2, les jets d'eau sous haute pression sortant des orifices 28 de la buse tournante 26 viennent heurter la surface S à nettoyer au voisinage immédiat du passage 42, c'est-à-dire à proximité de l'extrémité de plus grand diamètre de la paroi intermédiaire 40. De cette manière, on comprend que la récupération des effluents que constituent l'eau et les déchets résultant du nettoyage de la surface S s'effectue facilement au travers du passage 42, puis de la chambre 46.As schematically illustrated by the arrows 48 in FIG. 2, the jets of water under high pressure leaving the orifices 28 of the rotating nozzle 26 strike the surface S to be cleaned in the immediate vicinity of the passage 42, that is to say say near the end of larger diameter of the intermediate wall 40. In this way, it is understood that the recovery of effluents that constitute water and waste resulting cleaning of the surface S is easily carried out through the passage 42, then through the chamber 46.

Pour permettre cette récupération, la paroi extérieure 30 comporte une tubulure 50 sur laquelle est raccordée une canalisation d'aspiration constituée par un tuyau souple 52.To allow this recovery, the external wall 30 comprises a tube 50 to which is connected a suction pipe constituted by a flexible pipe 52.

En se reportant à nouveau à la figure 1, on voit que l'extrémité opposée du tuyau souple 52 est raccordée sur l'ensemble de récupération 12 des déchets, qui va à présent être décrit.Referring again to FIG. 1, it can be seen that the opposite end of the flexible pipe 52 is connected to the recovery assembly 12 for the waste, which will now be described.

L'ensemble de récupération 12 comprend tout d'abord une cuve décanteuse 54 constituée avantageusement par une cuve cylindrique, d'axe vertical, dont le fond 54a est légèrement en pente vers l'axe de cette cuve. La cuve 54 est étanche et sa paroi cylindrique est traversée, à proximité de son extrémité supérieure, par une tubulure 56 d'arrivée des effluents sur laquelle est raccordé le tuyau souple 52. De façon plus précise, l'extrémité de cette tubulure 56 située à l'intérieur de la cuve décanteuse 54 est incurvée selon une direction sensiblement circonférentielle de façon à amorcer un effet cyclone lorsque les effluents arrivent par le tuyau souple 52 dans la cuve décanteuse.The recovery assembly 12 firstly comprises a decanter tank 54 advantageously constituted by a cylindrical tank, of vertical axis, the bottom 54a of which is slightly sloping towards the axis of this tank. The tank 54 is sealed and its cylindrical wall is crossed, near its upper end, by an effluent inlet pipe 56 to which the flexible pipe 52 is connected. More specifically, the end of this pipe 56 located inside the decanter tank 54 is curved in a substantially circumferential direction so as to initiate a cyclone effect when the effluents arrive via the flexible pipe 52 in the decanter tank.

Une canalisation 58 d'évacuation des effluents gazeux débouche également dans la partie supérieure de la cuve décanteuse 54, au travers du couvercle de cette dernière, en un emplacement sensiblement diamétralement opposé à la tubulure 56. Cette canalisation 58 se prolonge jusqu'à un aspirateur pneumatique 72 en traversant successivement un séparateur d'eau 60 et des filtres 70.A pipe 58 for discharging the gaseous effluents also opens into the upper part of the decanter tank 54, through the cover of the latter, at a location substantially diametrically opposite to the pipe 56. This pipe 58 extends to a vacuum cleaner tire 72 by successively passing through a water separator 60 and filters 70.

A l'intérieur du séparateur d'eau 60, les microgouttelettes de liquide entraînées par le flux d'air sont séparées de ce dernier et récupérées dans un pot de stockage 62. Ce pot de stockage 62 est placé à un niveau supérieur à celui de la cuve décanteuse 54 et il est relié à cette dernière par une conduite de recyclage 64 contrôlée par une vanne 66 normalement fermée. La conduite 64 traverse de façon étanche le couvercle de la cuve décanteuse 54, et débouche dans le fond du pot de stockage 62, de telle sorte que ce dernier est vidangé automatiquement dans la cuve décanteuse lorsqu'on ouvre la vanne 66.Inside the water separator 60, the microdroplets of liquid entrained by the air flow are separated from the latter and collected in a storage pot 62. This storage pot 62 is placed at a level higher than that of the settling tank 54 and it is connected to the latter by a recycling line 64 controlled by a valve 66 normally closed. Line 64 passes tightly through the cover of the decanting tank 54, and opens into the bottom of the storage pot 62, so that the latter is automatically emptied into the decanting tank when the valve 66 is opened.

Les filtres 70 sont des filtres de qualité nucléaire servant à retenir les particules solides éventuellement entraînées par les effluents gazeux.The filters 70 are nuclear grade filters used to retain solid particles possibly entrained by the gaseous effluents.

L'aspirateur pneumatique 72 fonctionne par effet venturi, au moyen d'une tuyauterie d'injection d'air comprimé 74 contrôlée par une vanne 76. L'ouverture de cette vanne a pour effet d'injecter de l'air comprimé dans l'aspirateur 72, ce qui crée une dépression grâce à laquelle les effluents de la tête de nettoyage 20 sont aspirés par la chambre périphérique 46, la canalisation d'aspiration 52, la cuve décanteuse 54 et la canalisation 58, en passant par le séparateur 60 et les filtres 70. L'air comprimé injecté dans l'aspirateur 72 par la tuyauterie 74 se mélange à l'air aspiré par la canalisation 58 pour être rejeté à l'extérieur au travers d'un tuyau 78.The pneumatic vacuum cleaner 72 operates by venturi effect, by means of a compressed air injection pipe 74 controlled by a valve 76. The opening of this valve has the effect of injecting compressed air into the vacuum cleaner 72, which creates a vacuum through which the effluents from the cleaning head 20 are sucked in by the peripheral chamber 46, the suction line 52, the decanter tank 54 and the line 58, passing through the separator 60 and the filters 70. The compressed air injected into the vacuum cleaner 72 by the piping 74 mixes with the air sucked by the pipeline 58 to be discharged outside through a pipe 78.

La partie de l'ensemble de récupération 12 qui vient d'être décrite permet, grâce à l'aspirateur 72, de créer une dépression suffisante pour aspirer les effluents produits par la tête de nettoyage 20, c'est-à-dire le liquide de nettoyage et les déchets résultant de l'impact de ce liquide sur la surface S. Ces effluents, qui contiennent à la fois une phase gazeuse, une phase liquide et une phase solide, sont d'abord séparés dans la cuve décanteuse 54 qui retient la majeure partie des phases liquide et solide. La petite partie de la phase liquide restant dans la phase gazeuse est récupérée par le séparateur 60 et la petite partie de la phase solide restant dans la phase gazeuse est récupérée par les filtres 70.The part of the recovery assembly 12 which has just been described makes it possible, by means of the vacuum cleaner 72, to create a vacuum sufficient to suck up the effluents produced by the cleaning head 20, that is to say the liquid. cleaning and waste resulting from the impact of this liquid on the surface S. These effluents, which contain both a gaseous phase, a liquid phase and a solid phase, are first separated in the decanter tank 54 which retains most of the liquid and solid phases. The small part of the liquid phase remaining in the gas phase is recovered by the separator 60 and the small part of the solid phase remaining in the gas phase is recovered by the filters 70.

L'ensemble de récupération 12 permet en outre de séparer les phases liquide et solide retenues dans la cuve décanteuse 54. A cet effet, un tube vertical 80 disposé selon l'axe de la cuve 54 traverse de façon étanche le couvercle de cette dernière et plonge jusqu'à proximité du fond 54a de cette cuve. Ce tube 80 communique à son extrémité supérieure avec un hydroéjecteur 82 placé dans un circuit 84, relié en amont de l'hydroéjecteur 82, à une source 86 d'eau sous pression. Des vannes 88 et 90, normalement fermées, sont placées dans le circuit 84 respectivement en amont et en aval de l'hydroéjecteur 82. Cet agencement permet, lors de l'ouverture des vannes 88 et 90, d'aspirer le liquide contenu dans la cuve décanteuse 54 afin, par exemple, de le recycler.The recovery assembly 12 also makes it possible to separate the liquid and solid phases retained in the decanter tank 54. For this purpose, a vertical tube 80 disposed along the axis of the tank 54 passes through the cover of the latter in a sealed manner and plunges to near the bottom 54a of this tank. This tube 80 communicates at its upper end with a hydro-ejector 82 placed in a circuit 84, connected upstream of the hydro-ejector 82, to a source 86 of pressurized water. Valves 88 and 90, normally closed, are placed in the circuit 84 respectively upstream and downstream of the hydro-ejector 82. This arrangement allows, when the valves 88 and 90 are opened, to suck the liquid contained in the decanter tank 54 in order, for example, to recycle it.

Afin que le liquide aspiré par le tube 80 soit séparé de la phase solide qui se trouve également déposée dans la cuve décanteuse 54, cette dernière contient un filtre annulaire 92, réalisé par exemple en laine de polyester tassée, qui s'étend sur toute la hauteur de la cuve autour du tube plongeur 80. Ce filtre 92 peut notamment être placé entre deux tôles perforées concentriques qui en assurent le maintien mécanique sans empêcher l'écoulement de l'eau.So that the liquid sucked through the tube 80 is separated from the solid phase which is also deposited in the decanting tank 54, the latter contains an annular filter 92, made for example of packed polyester wool, which extends over the entire height of the tank around the dip tube 80. This filter 92 can in particular be placed between two concentric perforated sheets which provide mechanical support without preventing the flow of water.

Grâce à cet agencement, les grosses salissures décantent au fond de la cuve 54 et l'eau migre au travers du filtre 92 qui n'offre que peu de résistance à l'eau tout en retenant les salissures. Ainsi, le tube 80 n'aspire que de l'eau chargée de très fines particules.Thanks to this arrangement, the coarse dirt settles at the bottom of the tank 54 and the water migrates through the filter 92 which offers little resistance to water while retaining the dirt. Thus, the tube 80 only sucks water loaded with very fine particles.

Pour que la vidange de l'eau contenue dans la cuve décanteuse 54 soit possible, il faut que l'aspirateur 72 soit arrêté. Par conséquent, les vannes 88 et 90 commandant l'aspiration de l'eau récupérée dans la cuve 54 sont normalement fermées lorsque l'aspirateur 72 fonctionne. Lorsque la cuve 54 est remplie d'eau, la vanne 76 commandant l'actionnement de l'aspirateur 72 est fermée à son tour avant que les vannes 88 et 90 ne soient ouvertes.For the emptying of the water contained in the decanting tank 54 to be possible, the vacuum cleaner 72 must be stopped. Consequently, the valves 88 and 90 controlling the suction of the water recovered in the tank 54 are normally closed when the vacuum cleaner 72 works. When the tank 54 is filled with water, the valve 76 controlling the actuation of the vacuum cleaner 72 is closed in turn before the valves 88 and 90 are opened.

De préférence, on place dans la partie supérieure de la cuve décanteuse 54 un détecteur 94 de niveau haut de liquide qui peut être simplement relié à une alarme avertissant l'opérateur de la nécessité de vidanger la cuve décanteuse, ou qui peut déclencher automatiquement la fermeture de la vanne 76 suivie de l'ouverture des vannes 88 et 90, rendant ainsi le fonctionnement du nettoyeur automatique.Preferably, a top 94 liquid level detector 94 is placed in the upper part of the decanting tank 54 which can be simply connected to an alarm warning the operator of the need to empty the decanting tank, or which can automatically trigger the closure of valve 76 followed by the opening of valves 88 and 90, thus making the operation of the automatic cleaner.

Dans l'exemple de réalisation illustré sur la figure 1, on a également prévu un dispositif de sécurité permettant d'obturer automatiquement l'entrée de la canalisation 58 par lequel l'air est aspiré hors de la cuve décanteuse, dans le cas où le détecteur de niveau 94 serait défaillant et aussi afin de palier à un éventuel non respect de l'alarme déclenchée par ce détecteur. Ce dispositif de sécurité comprend une bille flottante 96 qui est placée dans une cage perforée 98 située dans le prolongement de la canalisation 58, immédiatement en dessous du couvercle de la cuve décanteuse 54. Lorsque le niveau dans la cuve 54 s'élève de façon anormale, la bille flottante 96 vient fermer l'extrémité inférieure de la canalisation 58. La dépression créée par l'aspirateur 72 maintient alors cette bille dans la position de fermeture de la canalisation 58, alors que toute aspiration cesse dans la chambre périphérique de réaspiration 46 de la tête de nettoyage 20.In the exemplary embodiment illustrated in FIG. 1, a safety device has also been provided making it possible to automatically shut off the inlet of the pipe 58 by which the air is sucked out of the decanting tank, in the case where the level detector 94 would be faulty and also in order to overcome any non-compliance with the alarm triggered by this detector. This safety device comprises a floating ball 96 which is placed in a perforated cage 98 located in the extension of the pipe 58, immediately below the cover of the decanter tank 54. When the level in the tank 54 rises abnormally , the floating ball 96 comes to close the lower end of the pipe 58. The vacuum created by the vacuum cleaner 72 then keeps this ball in the closed position of the pipe 58, while all suction ceases in the peripheral rebreathing chamber 46 of the cleaning head 20.

Grâce notamment à la présence de l'ensemble de récupération 12, le nettoyeur haute pression conforme à l'invention permet de résoudre de façon simple et efficace le problème posé par les déchets produits par le récupérateur. De plus, ces déchets sont séparés selon leur nature, de sorte que certains d'entre eux peuvent être recyclés ou évacués sans risque pour le personnel d'intervention.Thanks in particular to the presence of the recovery assembly 12, the high-pressure cleaner according to the invention makes it possible to solve the problem posed by the waste produced by the recuperator in a simple and effective manner. In addition, this waste is separated according to their nature, so that some of them can be recycled or disposed of without risk for intervention personnel.

Par ailleurs, la conception de l'ensemble de nettoyage 10 permet au personnel d'intervention de travailler à une distance relativement grande de la surface à nettoyer et autorise même le remplacement de ce personnel par un appareil de manutention à distance tel qu'un télémanipulateur.Furthermore, the design of the cleaning assembly 10 allows intervention personnel to work at a relatively large distance from the surface to be cleaned and even authorizes the replacement of this personnel by a remote handling device such as a remote manipulator. .

Il est également intéressant d'observer que le nettoyeur haute pression selon l'invention peut être utilisé quelle que soit la nature du milieu que l'on désire nettoyer, puisque la séparation des différentes phases effectuée dans l'ensemble de récupération 12 permet de contrôler de façon particulièrement efficace la gestion des effluents.It is also interesting to observe that the high pressure cleaner according to the invention can be used whatever the nature of the medium which it is desired to clean, since the separation of the different phases carried out in the recovery assembly 12 makes it possible to control particularly efficiently the management of effluents.

Enfin, cet appareil présente l'avantage de tous les nettoyeurs haute pression existants qui consiste à ne pas dégrader les surfaces ainsi assainies, ce qui supprime la nécessité de refaire ces surfaces après intervention.Finally, this device has the advantage of all existing high pressure cleaners which consists in not degrading the surfaces thus sanitized, which eliminates the need to redo these surfaces after intervention.

Bien entendu, l'invention n'est pas limitée au mode de réalisation qui vient d'être décrit à titre d'exemple, mais en couvre toutes les variantes. En particulier on comprendra aisément que l'ensemble de récupération décrit peut être utilisé avec un nettoyeur haute pression comportant une tête de nettoyage de structure légèrement différente de celle qui a été décrite. De même, les moyens utilisés pour séparer les différentes phases des effluents récupérés peuvent subir certaines modifications sans sortir du cadre de l'invention.Of course, the invention is not limited to the embodiment which has just been described by way of example, but covers all its variants. In particular, it will be readily understood that the recovery assembly described can be used with a high pressure cleaner comprising a cleaning head with a structure slightly different from that which has been described. Similarly, the means used to separate the different phases of the recovered effluents can undergo certain modifications without departing from the scope of the invention.

Claims (14)

Nettoyeur haute pression comportant une tête de nettoyage (20) comprenant une chambre centrale de nettoyage (44) délimitée par une paroi intermédiaire (40) et dans laquelle débouche une canalisation d'injection (24) d'un liquide de nettoyage, et une chambre périphérique (46) de réaspiration d'effluents formée entre la paroi intermédiaire et une paroi extérieure (30) et dans laquelle débouche une canalisation d'aspiration (52) reliée à des moyens d'aspiration (72), caractérisé par le fait que les moyens d'aspiration sont incorporés dans un ensemble de récupération (12) des effluents qui comprend une cuve décanteuse (54) dans la partie supérieure de laquelle débouchent ladite canalisation d'aspiration (52) et une canalisation (58) d'évacuation d'effluents gazeux communiquant avec les moyens d'aspiration (72), un tube (80) d'évacuation d'effluents liquides relié à des moyens de pompage (82) plongeant jusqu'à proximité du fond de la cuve décanteuse, à l'intérieur d'un organe de filtrage annulaire (92) retenant les effluents solides.High-pressure cleaner comprising a cleaning head (20) comprising a central cleaning chamber (44) delimited by an intermediate wall (40) and into which opens an injection pipe (24) of a cleaning liquid, and a chamber effluent rebreathing device (46) formed between the intermediate wall and an outer wall (30) and into which opens a suction pipe (52) connected to suction means (72), characterized in that the suction means are incorporated in an effluent recovery assembly (12) which comprises a decanter tank (54) in the upper part of which open said suction pipe (52) and a drainage pipe (58) gaseous effluents communicating with the suction means (72), a tube (80) for evacuating liquid effluents connected to pumping means (82) plunging close to the bottom of the decanter tank, inside ieur of an annular filtering member (92) retaining the solid effluents. Nettoyeur selon la revendication 1, caractérisé par le fait que la cuve décanteuse (54) est une cuve cylindrique, d'axe vertical, la canalisation d'aspiration (52) débouchant dans cette cuve selon une direction circonférentielle, de façon à amorcer un effet cyclone.Cleaner according to claim 1, characterized in that the decanter tank (54) is a cylindrical tank, with a vertical axis, the suction line (52) opening into this tank in a circumferential direction, so as to initiate an effect cyclone. Nettoyeur selon l'une quelconque des revendications 1 et 2, caractérisé par le fait que la canalisation (58) d'évacuation des effluents gazeux comprend des moyens de séparation liquide-gaz (60) et des moyens de filtration (70).Cleaner according to any one of claims 1 and 2, characterized in that the pipe (58) for evacuating gaseous effluents comprises liquid-gas separation means (60) and filtration means (70). Nettoyeur selon la revendication 3, caractérisé par le fait que les moyens de séparation liquide-gaz (60) communiquent avec un pot de stockage d'eau (62) relié à la cuve décanteuse (54) par une conduite de recyclage (64) normalement fermée par une vanne (66).Cleaner according to claim 3, characterized in that the liquid-gas separation means (60) communicate with a water storage pot (62) connected to the decanter tank (54) by a recycling line (64) normally closed by a valve (66). Nettoyeur selon l'une quelconque des revendications précédentes, caractérisé par le fait que les moyens de pompage comprennent un hydroéjecteur (82) placé dans un circuit (84) relié à une source de liquide sous pression (86) et équipé de moyens de fermeture (88, 90) situés en amont et en aval de l'hydroéjecteur.Cleaner according to any one of the preceding claims, characterized in that the pumping means comprise a hydro-ejector (82) placed in a circuit (84) connected to a source of pressurized liquid (86) and equipped with closing means ( 88, 90) located upstream and downstream of the hydro-ejector. Nettoyeur selon l'une quelconque des revendications précédentes, caractérisé par le fait qu'un détecteur de niveau haut de liquide (94) est placé dans la cuve décanteuse (54).Cleaner according to any one of the preceding claims, characterized in that a high liquid level detector (94) is placed in the decanting tank (54). Nettoyeur selon la revendication 6, caractérisé par le fait que le détecteur de niveau haut de liquide (94) commande, lorsqu'il est actionné, l'arrêt des moyens d'aspiration (72).Cleaner according to claim 6, characterized in that the high liquid level detector (94) controls, when activated, the stopping of the suction means (72). Nettoyeur selon l'une quelconque des revendications précédentes, caractérisé par le fait qu'un obturateur à flotteur (96) est placé dans la cuve décanteuse (54), à l'entrée de ladite canalisation (58) d'évacuation des effluents gazeux, pour obturer automatiquement cette dernière lorsque le liquide dans la cuve décanteuse excède un niveau haut donné.Cleaner according to any one of the preceding claims, characterized in that a float shutter (96) is placed in the decanter tank (54), at the inlet of said pipe (58) for evacuating gaseous effluents, to automatically close the latter when the liquid in the settling tank exceeds a given high level. Nettoyeur selon l'une quelconque des revendications précédentes, caractérisé par le fait que la paroi extérieure (30) de la tête de nettoyage est apte à coopérer avec une surface à nettoyer par des moyens d'étanchéité et que la paroi intermédiaire (40) est alors écartée de cette même surface pour délimiter un passage (42) par lequel la chambre centrale de nettoyage communique en permanence avec la chambre périphérique de réaspiration (46).Cleaner according to any one of the preceding claims, characterized in that the external wall (30) of the cleaning head is capable of cooperating with a surface to be cleaned by sealing means and that the intermediate wall (40) is then moved away from this same surface to delimit a passage (42) through which the central cleaning chamber communicates permanently with the peripheral rebreathing chamber (46). Nettoyeur selon la revendication 9, caractérisé par le fait que la paroi extérieure porte des roulettes (36) aptes à être appliquées contre la surface à nettoyer, pour maintenir constante la largeur dudit passage (42).Cleaner according to claim 9, characterized in that the outer wall carries rollers (36) capable of being applied against the surface to be cleaned, to keep the width of said passage (42) constant. Nettoyeur selon l'une quelconque des revendications 9 et 10, caractérisé par le fait que la canalisation d'injection (24) débouche dans la chambre de nettoyage (44) par une buse tournante (26) dont la rotation est commandée par l'écoulement du liquide de nettoyage.Cleaner according to either of Claims 9 and 10, characterized in that the injection pipe (24) opens into the cleaning chamber (44) by a rotating nozzle (26) whose rotation is controlled by the flow cleaning fluid. Nettoyeur selon la revendication 11, caractérisé par le fait que la buse tournante (26) présente au moins deux orifices (28) orientés de telle sorte que des jets issus de ces orifices heurtent la surface à nettoyer au voisinage immédiat dudit passage (42).Cleaner according to claim 11, characterized in that the rotating nozzle (26) has at least two orifices (28) oriented so that jets from these orifices strike the surface to be cleaned in the immediate vicinity of said passage (42). Nettoyeur selon l'une quelconque des revendications 9 à 12, caractérisé par le fait que la section dudit passage (42) est approximativement égale à la section de la canalisation de réaspiration (24).Cleaner according to any one of Claims 9 to 12, characterized in that the section of said passage (42) is approximately equal to the section of the suction pipe (24). Nettoyeur selon l'une quelconque des revendications précédentes, caractérisé par le fait que la tête de nettoyage (20) est reliée à un pistolet de commande (16) par une perche de manoeuvre (22) constituant la canalisation d'injection, un générateur haute pression (14) alimentant le pistolet de commande en liquide de nettoyage.Cleaner according to any one of the preceding claims, characterized in that the cleaning head (20) is connected to a control gun (16) by an operating pole (22) constituting the injection pipe, a high generator pressure (14) supplying the control gun with cleaning liquid.
EP90403428A 1989-12-04 1990-12-03 High-pressure cleaner equipped with an assembly for recuperating cleaning liquid and waste Expired - Lifetime EP0432027B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8915970A FR2655470B1 (en) 1989-12-04 1989-12-04 HIGH PRESSURE CLEANER EQUIPPED WITH A KIT FOR RECOVERING CLEANING LIQUID AND WASTE.
FR8915970 1989-12-04

Publications (2)

Publication Number Publication Date
EP0432027A1 true EP0432027A1 (en) 1991-06-12
EP0432027B1 EP0432027B1 (en) 1995-02-15

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EP90403428A Expired - Lifetime EP0432027B1 (en) 1989-12-04 1990-12-03 High-pressure cleaner equipped with an assembly for recuperating cleaning liquid and waste

Country Status (7)

Country Link
US (1) US5125126A (en)
EP (1) EP0432027B1 (en)
JP (1) JP2843683B2 (en)
KR (1) KR910011210A (en)
DE (1) DE69016961T2 (en)
ES (1) ES2068363T3 (en)
FR (1) FR2655470B1 (en)

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Also Published As

Publication number Publication date
FR2655470A1 (en) 1991-06-07
FR2655470B1 (en) 1994-04-15
DE69016961T2 (en) 1995-09-07
DE69016961D1 (en) 1995-03-23
KR910011210A (en) 1991-08-07
JP2843683B2 (en) 1999-01-06
EP0432027B1 (en) 1995-02-15
ES2068363T3 (en) 1995-04-16
JPH04118082A (en) 1992-04-20
US5125126A (en) 1992-06-30

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