WO2014128604A1 - Assembly for etching a surface by spraying high-pressure water at said surface - Google Patents

Assembly for etching a surface by spraying high-pressure water at said surface Download PDF

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Publication number
WO2014128604A1
WO2014128604A1 PCT/IB2014/059001 IB2014059001W WO2014128604A1 WO 2014128604 A1 WO2014128604 A1 WO 2014128604A1 IB 2014059001 W IB2014059001 W IB 2014059001W WO 2014128604 A1 WO2014128604 A1 WO 2014128604A1
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WO
WIPO (PCT)
Prior art keywords
assembly according
bell
water
tank
jet
Prior art date
Application number
PCT/IB2014/059001
Other languages
French (fr)
Inventor
Jean Greppo
Original Assignee
Jean Greppo
Priority date (The priority date 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 date listed.)
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Publication date
Application filed by Jean Greppo filed Critical Jean Greppo
Publication of WO2014128604A1 publication Critical patent/WO2014128604A1/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
    • B08B3/02—Cleaning by the force of jets or sprays
    • B08B3/024—Cleaning by means of spray elements moving over the surface to be cleaned
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B5/00—Cleaning by methods involving the use of air flow or gas flow
    • B08B5/04—Cleaning by suction, with or without auxiliary action
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B2203/00—Details of cleaning machines or methods involving the use or presence of liquid or steam
    • B08B2203/02—Details of machines or methods for cleaning by the force of jets or sprays
    • B08B2203/0229—Suction chambers for aspirating the sprayed liquid

Definitions

  • the present invention relates to an assembly for stripping a surface by spraying water at high pressure on this surface, this assembly also allowing the recovery of water from the surface. water spray, loaded with pickled material, then the treatment of this water loaded for recycling.
  • the invention is particularly intended for use in the production of so-called "deactivated concrete” flooring, that is to say of coatings comprising small pebbles partially in concrete.
  • "deactivated concrete” flooring that is to say of coatings comprising small pebbles partially in concrete.
  • concrete containing small pebbles mixed with it is poured on the surface to be developed and a chemical treatment is applied on the surface. This chemical treatment allows the surface layer of concrete to not harden and can then be stripped so as to reveal small stones partially caught in the solidified concrete.
  • Stripping of the surface layer is currently carried out by simply splashing water, and this water laden with concrete sludge is discharged through the runoff drainage networks. This is problematic because concrete sludge is polluting and clogs these drainage systems.
  • the present invention aims to overcome the aforementioned drawbacks.
  • the pickling assembly comprises a pickling bell intended to be passed over the surface to be stripped, comprising:
  • an elongated suction opening located on one side of the bell, the length of which is transverse to the direction of advance of the bell on the surface to be stripped; and two nozzles mounted on a rotating arm, of the so-called “pencil jet” type, that is to say, with a tight, compact, rod-like shape, the rotating arm rotating in a plane inclined with respect to the horizontal of such so that each nozzle is in turn, each rotation of the arm, in a position close to the surface to be stripped and in a position remote from this surface, the inclination being such that said remote position is located on the side of the suction opening and that said close position is on the opposite side to this suction opening.
  • a nozzle when in said position close to the surface to be stripped, performs an effective stripping of this surface, given its type "pencil jet” and given this close position; when this nozzle comes in the position remote from said surface, it always performs a certain stripping but also has the effect of pushing the projected water, loaded with pickled material, towards said suction opening.
  • the angle of inclination of the arm relative to the horizontal can range from 10 to 30 ° and is preferably 20 °.
  • each nozzle is rotatable about an axis and the jet emitted by each nozzle is inclined relative to this axis of rotation.
  • the jet of a nozzle can thus scan a large surface during the advance of the machine along the surface to be stripped.
  • the angle of inclination of the jet relative to the axis of rotation can range from 10 to 30 ° and is preferably 20 °.
  • the jet of one of the nozzles is inclined on one side of a plane passing through the arm and the axis of rotation of this arm while the jet of the other nozzle is inclined on the other side from this same plane.
  • the inclinations of these jets allow, by reaction, to drive the arm in rotation. These inclinations can range from 3 to 10 ° approximately.
  • the invention also relates to a central vacuum comprising a tank for collecting the charged water sucked by the bell and a pump for discharging this water. out of this tank.
  • the plant comprises means for stirring these etched materials in the tank, in particular located at the suction port of the pump. These stirring means may be in the form of a projection of water at this orifice, from inside the duct extending downstream thereof.
  • the evacuation pump may also be of the "wortex-effect" type, that is to say comprising a bell placed in the bottom of the tank, inside which a propeller for generating a swirling motion in the bell, this bell being connected to a suction line of the charged water thus set in motion; said stirring means may then in particular be in the form of at least two water spray nozzles placed near the bottom of the tank, the jets of which are directed in opposite directions, more or less tangential to the wall of the tank , or inclined towards the center of the bottom of the tank.
  • the stripping assembly according to the invention may also comprise an effluent filtration unit, enabling, or helping to allow, to separate said sludge from the projected water, and thus to recycle this water.
  • Such a filter may in particular be constituted by a bag of large dimensions, with filtering wall of the water but retention of the sludge concerned, especially cloth. It may be a bag of the type of garbage bags known under the name "BIGBAG”, intended to collect rubble or other waste building works.
  • the stripping assembly according to the invention may also comprise a plurality of settling tanks adjacent to each other, allowing, by the passage of water from one tank to another, to carry out successive decantations of the water. recovered.
  • FIG. 1 is a schematic sectional view of a pickling bell that includes this set
  • FIG. 2 is a schematic sectional view of a central vacuum that includes this assembly according to a first embodiment
  • FIG. 3 is a schematic sectional view of a central vacuum that includes this assembly according to a first embodiment
  • FIG. 4 is a view of the central section along the line IV-IV of Figure 3;
  • FIG. 5 is a perspective view of a plurality of settling tanks that also includes this set.
  • the pickling bell 1 comprises an elongated suction opening 2 located on the front side of the bell relative to the direction of advance of the bell on a surface to be stripped, the length this opening 2 being transverse to this same direction of advance.
  • the opening 2 is delimited internally by an inner wall 3.
  • the bell 1 is connected to a suction duct by means of a nozzle 4.
  • the bell 1 comprises a rotatable arm 5 inside of it, mounted on its upper wall, which is inclined at approximately 20 ° to the horizontal.
  • This arm 5 carries two rotary nozzles 6 at its ends, the jets of which are designated by the reference 7.
  • These nozzles 6 are of the so-called “pencil jet” type, that is to say with a narrow jet 7, in a stick, this jet 7 being inclined with respect to the axis of rotation of the nozzle 6.
  • the rotary arm 7 rotates in a plane inclined by about 20 ° relative to the horizontal so that each nozzle 6 is in turn, at each rotation of the arm 5, in a position close to the surface to be stripped and in a position away from this surface, the inclination being such that said remote position is located on the side of the suction opening 2 and said close position is on the opposite side to this suction opening 2.
  • the jet of one of the nozzles 6 is inclined on one side of a plane passing through the arm 5 and by the axis of rotation of this arm 5 (this plane P is therefore parallel to the sheet) while the jet of the other nozzle 6 is inclined on the other side of this same plane.
  • the inclinations of these jets allow, by reaction, to drive the arm in rotation. These inclinations can range from 3 to 10 ° approximately.
  • the suction unit 10 comprises, in a first embodiment, a reservoir 1 1 for collecting water sucked by the head 1, a pump 12 for discharging this water out of this tank 1 1, and a water inlet 13 inside the suction pipe 14 of the pump 12, downstream of the suction port of this water.
  • This suction unit 10 according to a second embodiment shown in FIGS. 3 and 4, comprises:
  • a discharge pump 12 of the "wortex-effect" type that is to say comprising a bell 12a placed in the bottom of the tank 1 1, inside which a propeller 12b for generating a swirling movement in the bell 12a, this bell 12a being connected to a suction line of the charged water thus set in motion;

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  • Cleaning By Liquid Or Steam (AREA)

Abstract

This assembly includes an etching housing (1) intended to be passed over the surface to be etched, which comprises: -an elongate suction opening (2), located on one side of the housing (1), of which the length is transverse to the direction of travel of the housing (1) over the surface to be etched; and -two so-called pencil-jet nozzles (6), i.e. narrow-jet, compact nozzles on rods, mounted on a rotary arm (5), the rotary arm (5) turning in a plane inclined to the horizontal such that each nozzle (6) is alternately, at each rotation of the arm (5), in a position close to the surface to be etched and in a position removed from said surface, the inclination being such that said removed position is located on the suction opening (2) side and said close position is on the side opposite this suction opening.

Description

ENSEMBLE DE DÉCAPAGE D'UNE SURFACE PAR PROJECTION D'EAU À HAUTE PRESSION SUR CETTE SURFACE La présente invention concerne un ensemble de décapage d'une surface par projection d'eau à haute pression sur cette surface, cet ensemble permettant également la récupération de l'eau projetée, chargée de matières décapées, puis le traitement de cette eau chargée en vue de son recyclage.  The present invention relates to an assembly for stripping a surface by spraying water at high pressure on this surface, this assembly also allowing the recovery of water from the surface. water spray, loaded with pickled material, then the treatment of this water loaded for recycling.
L'invention est notamment destinée à être utilisée lors de la réalisation de revêtements de sols dits en "bétons désactivés", c'est-à-dire de revêtements comprenant des petits cailloux partiellement pris dans du béton. Pour réaliser ce type de revêtement, du béton contenant les petits cailloux mélangés à lui est coulé sur la surface à aménager puis un traitement chimique est appliqué en surface. Ce traitement chimique permet que la couche superficielle de béton ne durcisse pas et qu'elle puisse ensuite être décapée de manière à faire apparaître les petits cailloux partiellement pris dans le béton solidifié.  The invention is particularly intended for use in the production of so-called "deactivated concrete" flooring, that is to say of coatings comprising small pebbles partially in concrete. To achieve this type of coating, concrete containing small pebbles mixed with it is poured on the surface to be developed and a chemical treatment is applied on the surface. This chemical treatment allows the surface layer of concrete to not harden and can then be stripped so as to reveal small stones partially caught in the solidified concrete.
Le décapage de la couche superficielle est actuellement réalisé par simple projection d'eau, et cette eau chargée de boue de béton est évacuée par les réseaux d'évacuation d'eau de ruissellement. Cette manière de faire est problématique étant donné que les boues de béton sont polluantes et qu'elles ont pour effet de colmater ces réseaux d'évacuation.  Stripping of the surface layer is currently carried out by simply splashing water, and this water laden with concrete sludge is discharged through the runoff drainage networks. This is problematic because concrete sludge is polluting and clogs these drainage systems.
II a par ailleurs été envisagé de procéder à un brossage à sec de ce type de revêtement, ce qui ne donne cependant pas satisfaction.  It has also been envisaged to dry brush this type of coating, which however does not give satisfaction.
La présente invention vise à remédier aux inconvénients précités.  The present invention aims to overcome the aforementioned drawbacks.
A cet effet, l'ensemble de décapage comprend une cloche de décapage destinée à être passée sur la surface à décaper, comprenant :  For this purpose, the pickling assembly comprises a pickling bell intended to be passed over the surface to be stripped, comprising:
- une ouverture d'aspiration allongée située sur un côté de la cloche, dont la longueur est transversale à la direction d'avance de la cloche sur la surface à décaper ; et - deux buses montées sur un bras rotatif, de type dites "à jet crayon", c'est-à-dire à jet serré, compact, en bâtonnet, le bras rotatif tournant dans un plan incliné par rapport à l'horizontale de telle sorte que chaque buse se trouve tour à tour, à chaque rotation du bras, en une position proche de la surface à décaper et en une position éloignée de cette surface, l'inclinaison étant telle que ladite position éloignée est située du côté de l'ouverture d'aspiration et que ladite position proche est du côté opposé à cette ouverture d'aspiration. an elongated suction opening located on one side of the bell, the length of which is transverse to the direction of advance of the bell on the surface to be stripped; and two nozzles mounted on a rotating arm, of the so-called "pencil jet" type, that is to say, with a tight, compact, rod-like shape, the rotating arm rotating in a plane inclined with respect to the horizontal of such so that each nozzle is in turn, each rotation of the arm, in a position close to the surface to be stripped and in a position remote from this surface, the inclination being such that said remote position is located on the side of the suction opening and that said close position is on the opposite side to this suction opening.
Une buse, lorsqu'elle se trouve dans ladite position proche de la surface à décaper, réalise un décapage efficace de cette surface, compte tenu de son type "à jet crayon" et compte tenu de cette position proche ; lorsque cette buse vient dans la position éloignée de ladite surface, elle réalise toujours un certain décapage mais a également pour effet de pousser l'eau projetée, chargée de matières décapées, en direction de ladite ouverture d'aspiration.  A nozzle, when in said position close to the surface to be stripped, performs an effective stripping of this surface, given its type "pencil jet" and given this close position; when this nozzle comes in the position remote from said surface, it always performs a certain stripping but also has the effect of pushing the projected water, loaded with pickled material, towards said suction opening.
L'angle d'inclinaison du bras par rapport à l'horizontale peut aller de 10 à 30° et est de préférence de 20°.  The angle of inclination of the arm relative to the horizontal can range from 10 to 30 ° and is preferably 20 °.
De préférence, chaque buse est rotative autour d'un axe et le jet émis par chaque buse est incliné par rapport à cet axe de rotation.  Preferably, each nozzle is rotatable about an axis and the jet emitted by each nozzle is inclined relative to this axis of rotation.
Le jet d'une buse peut ainsi balayer une surface importante au cours de l'avance de la machine le long de la surface à décaper.  The jet of a nozzle can thus scan a large surface during the advance of the machine along the surface to be stripped.
L'angle d'inclinaison du jet par rapport à l'axe de rotation peut aller de 10 à 30° et est de préférence de 20°.  The angle of inclination of the jet relative to the axis of rotation can range from 10 to 30 ° and is preferably 20 °.
De préférence, le jet de l'une des buses est incliné sur un côté d'un plan passant par le bras et par l'axe de rotation de ce bras tandis que le jet de l'autre buse est incliné sur l'autre côté de ce même plan.  Preferably, the jet of one of the nozzles is inclined on one side of a plane passing through the arm and the axis of rotation of this arm while the jet of the other nozzle is inclined on the other side from this same plane.
Les inclinaisons de ces jets permettent, par réaction, d'entraîner le bras en rotation. Ces inclinaisons peuvent aller de 3 à 10° environ.  The inclinations of these jets allow, by reaction, to drive the arm in rotation. These inclinations can range from 3 to 10 ° approximately.
L'invention concerne également une centrale d'aspiration incluant un réservoir de recueil de l'eau chargée aspirée par la cloche et une pompe d'évacuation de cette eau hors de ce réservoir. Pour empêcher que les matières décapées viennent colmater la pompe lorsque cette dernière est mise en fonctionnement, la centrale comprend des moyens d'agitation de ces matières décapées dans le réservoir, en particulier situés au niveau de l'orifice d'aspiration de la pompe. Ces moyens d'agitation peuvent être sous forme d'une projection d'eau au niveau de cet orifice, depuis l'intérieur du conduit s' étendant en aval de celui-ci. The invention also relates to a central vacuum comprising a tank for collecting the charged water sucked by the bell and a pump for discharging this water. out of this tank. To prevent the pickled material from clogging the pump when the latter is put into operation, the plant comprises means for stirring these etched materials in the tank, in particular located at the suction port of the pump. These stirring means may be in the form of a projection of water at this orifice, from inside the duct extending downstream thereof.
La pompe d'évacuation peut également être du type "à effet wortex", c'est-à-dire comprenant une cloche placée dans le fond du réservoir, à l'intérieur de laquelle tourne une hélice de génération d'un mouvement tourbillonnaire dans la cloche, cette cloche étant reliée à une conduite d'aspiration de l'eau chargée ainsi mise en mouvement ; lesdits moyens d'agitation peuvent alors notamment être sous la forme d'au moins deux buses de projection d'eau placées à proximité du fond du réservoir, dont les jets sont dirigés dans des directions opposées, plus ou moins tangentielles à la paroi du réservoir, ou inclinées en direction du centre du fond du réservoir.  The evacuation pump may also be of the "wortex-effect" type, that is to say comprising a bell placed in the bottom of the tank, inside which a propeller for generating a swirling motion in the bell, this bell being connected to a suction line of the charged water thus set in motion; said stirring means may then in particular be in the form of at least two water spray nozzles placed near the bottom of the tank, the jets of which are directed in opposite directions, more or less tangential to the wall of the tank , or inclined towards the center of the bottom of the tank.
Ces jets permettent également de générer un mouvement d'eau tourbillonnaire dans le fond du réservoir, qui, en s'ajoutant à celui généré par ladite hélice (qui, sinon risque d'être insuffisant pour ce type d'effluents), permet une évacuation efficace des effluents.  These jets also make it possible to generate a swirling water movement in the bottom of the tank, which, in addition to that generated by said propeller (which, if not likely to be insufficient for this type of effluent), allows evacuation effective effluents.
L'ensemble de décapage selon l'invention peut également comprendre une unité de filtration des effluents, permettant, ou contribuant à permettre, de séparer lesdites boues de l'eau projetée, et donc de recycler cette eau.  The stripping assembly according to the invention may also comprise an effluent filtration unit, enabling, or helping to allow, to separate said sludge from the projected water, and thus to recycle this water.
Un tel filtre peut notamment être constitué par un sac de grande dimensions, à paroi filtrante de l'eau mais rétentive des boues concernées, notamment en toile. Il peut s'agir d'un sac du type des sacs à déchets connus sous la dénomination "BIGBAG", destinés à collecter des gravats ou autres déchets de travaux de bâtiment.  Such a filter may in particular be constituted by a bag of large dimensions, with filtering wall of the water but retention of the sludge concerned, especially cloth. It may be a bag of the type of garbage bags known under the name "BIGBAG", intended to collect rubble or other waste building works.
L'ensemble de décapage selon l'invention peut aussi comprendre une pluralité de bacs de décantation adjacents les uns aux autres, permettant, par le passage de l'eau d'un bac à un autre, de réaliser des décantations successives de l'eau récupérée. L'invention sera bien comprise en référence au dessin schématique annexé montrant, à titre d'exemples de réalisation, plusieurs sous-ensembles de l'ensemble de décapage concerné. The stripping assembly according to the invention may also comprise a plurality of settling tanks adjacent to each other, allowing, by the passage of water from one tank to another, to carry out successive decantations of the water. recovered. The invention will be better understood with reference to the appended schematic drawing showing, by way of exemplary embodiments, several subsets of the pickling assembly concerned.
Parmi les figures :  Among the figures:
- la figure 1 est une vue schématique, en coupe, d'une cloche de décapage que comprend cet ensemble ;  - Figure 1 is a schematic sectional view of a pickling bell that includes this set;
- la figure 2 est une vue schématique, en coupe, d'une centrale d'aspiration que comprend cet ensemble selon une première forme de réalisation ;  - Figure 2 is a schematic sectional view of a central vacuum that includes this assembly according to a first embodiment;
- la figure 3 est une vue schématique, en coupe, d'une centrale d'aspiration que comprend cet ensemble selon une première forme de réalisation ;  - Figure 3 is a schematic sectional view of a central vacuum that includes this assembly according to a first embodiment;
- la figure 4 est une vue de la centrale en coupe selon la ligne IV-IV de la figure 3 ; et  - Figure 4 is a view of the central section along the line IV-IV of Figure 3; and
- la figure 5 est une vue en perspective d'une pluralité de bacs de décantation que comprend également cet ensemble.  - Figure 5 is a perspective view of a plurality of settling tanks that also includes this set.
En référence à la figure 1 , il apparaît que la cloche de décapage 1 comprend une ouverture d'aspiration allongée 2 située sur le côté antérieur de la cloche par rapport à la direction d'avance de la cloche sur une surface à décaper, la longueur de cette ouverture 2 étant transversale à cette même direction d'avance. L'ouverture 2 est délimitée intérieurement par une paroi interne 3.  Referring to Figure 1, it appears that the pickling bell 1 comprises an elongated suction opening 2 located on the front side of the bell relative to the direction of advance of the bell on a surface to be stripped, the length this opening 2 being transverse to this same direction of advance. The opening 2 is delimited internally by an inner wall 3.
La cloche 1 est raccordée à un conduit d'aspiration au moyen d'un embout 4. The bell 1 is connected to a suction duct by means of a nozzle 4.
La cloche 1 comprend un bras rotatif 5 à l'intérieur d'elle, monté sur sa paroi supérieure, laquelle est inclinée d'environ 20° par rapport à l'horizontale. Ce bras 5 porte deux buses rotatives 6 à ses extrémités, dont les jets sont désignés par la référence 7. Ces buses 6 sont de type dites "à jet crayon", c'est-à-dire à jet 7 serré, en bâtonnet, ce jet 7 étant incliné par rapport à l'axe de rotation de la buse 6. The bell 1 comprises a rotatable arm 5 inside of it, mounted on its upper wall, which is inclined at approximately 20 ° to the horizontal. This arm 5 carries two rotary nozzles 6 at its ends, the jets of which are designated by the reference 7. These nozzles 6 are of the so-called "pencil jet" type, that is to say with a narrow jet 7, in a stick, this jet 7 being inclined with respect to the axis of rotation of the nozzle 6.
Le bras rotatif 7 tourne dans un plan incliné d'environ 20° par rapport à l'horizontale de telle sorte que chaque buse 6 se trouve tour à tour, à chaque rotation du bras 5, en une position proche de la surface à décaper et en une position éloignée de cette surface, l'inclinaison étant telle que ladite position éloignée est située du côté de l'ouverture d'aspiration 2 et que ladite position proche est du côté opposé à cette ouverture d'aspiration 2. The rotary arm 7 rotates in a plane inclined by about 20 ° relative to the horizontal so that each nozzle 6 is in turn, at each rotation of the arm 5, in a position close to the surface to be stripped and in a position away from this surface, the inclination being such that said remote position is located on the side of the suction opening 2 and said close position is on the opposite side to this suction opening 2.
Le jet de l'une des buses 6 est incliné sur un côté d'un plan passant par le bras 5 et par l'axe de rotation de ce bras 5 (ce plan P est donc parallèle à la feuille) tandis que le jet de l'autre buse 6 est incliné sur l'autre côté de ce même plan. Les inclinaisons de ces jets permettent, par réaction, d'entraîner le bras en rotation. Ces inclinaisons peuvent aller de 3 à 10° environ.  The jet of one of the nozzles 6 is inclined on one side of a plane passing through the arm 5 and by the axis of rotation of this arm 5 (this plane P is therefore parallel to the sheet) while the jet of the other nozzle 6 is inclined on the other side of this same plane. The inclinations of these jets allow, by reaction, to drive the arm in rotation. These inclinations can range from 3 to 10 ° approximately.
En référence à la figure 2, il apparaît que la centrale d'aspiration 10 comprend, selon une première forme de réalisation, un réservoir 1 1 de recueil de l'eau aspirée par la tête 1 , une pompe 12 d'évacuation de cette eau hors de ce réservoir 1 1 , et une arrivée d'eau 13 à l'intérieur du conduit d'aspiration 14 de la pompe 12, en aval de l'orifice d'aspiration de cette eau.  Referring to Figure 2, it appears that the suction unit 10 comprises, in a first embodiment, a reservoir 1 1 for collecting water sucked by the head 1, a pump 12 for discharging this water out of this tank 1 1, and a water inlet 13 inside the suction pipe 14 of the pump 12, downstream of the suction port of this water.
Cette centrale d'aspiration 10, selon une deuxième forme de réalisation montrée sur les figures 3 et 4, comprend :  This suction unit 10, according to a second embodiment shown in FIGS. 3 and 4, comprises:
- une pompe d'évacuation 12 du type "à effet wortex", c'est-à-dire comprenant une cloche 12a placée dans le fond du réservoir 1 1 , à l'intérieur de laquelle tourne une hélice 12b de génération d'un mouvement tourbillonnaire dans la cloche 12a, cette cloche 12a étant reliée à une conduite d'aspiration de l'eau chargée ainsi mise en mouvement ;  a discharge pump 12 of the "wortex-effect" type, that is to say comprising a bell 12a placed in the bottom of the tank 1 1, inside which a propeller 12b for generating a swirling movement in the bell 12a, this bell 12a being connected to a suction line of the charged water thus set in motion;
- deux buses 14 de projection d'eau placées à proximité du fond du réservoir 1 1 , dont les jets sont dirigés dans des directions opposées, en étant inclinés en direction du centre du fond du réservoir 1 1.  - Two nozzles 14 of water projection placed near the bottom of the tank 1 1, the jets are directed in opposite directions, being inclined towards the center of the bottom of the tank January 1.
Ces jets permettent également de générer un mouvement d'eau tourbillonnaire dans le fond du réservoir 1 1 , qui, en s'ajoutant à celui généré par l'hélice 12b (qui, sinon risque d'être insuffisant pour ce type d'effluents), permet une évacuation efficace des effluents. En référence à la figure 5, il apparaît que les bacs de décantation 20 sont adjacents les uns aux autres et permettent, par le passage de l'eau d'un bac 20 à un bac adjacent, de réaliser des décantations successives de l'eau récupérée. These jets also make it possible to generate a swirling water movement in the bottom of the tank 1 1, which, in addition to that generated by the propeller 12b (which otherwise may be insufficient for this type of effluent) , allows effective evacuation of effluents. Referring to Figure 5, it appears that the settling tanks 20 are adjacent to each other and allow, by the passage of water from a tray 20 to an adjacent tray, to perform successive decantations of the water recovered.

Claims

REVENDICATIONS
1. Ensemble de décapage d'une surface par projection d'eau à haute pression sur cette surface, caractérisé en ce qu'il comprend une cloche de décapage (1) destinée à être passée sur la surface à décaper, cette cloche (1) comprenant : 1. A set of stripping of a surface by high pressure water projection on this surface, characterized in that it comprises a pickling bell (1) intended to be passed over the surface to be stripped, this bell (1). comprising:
- une ouverture d'aspiration allongée (2), située sur un côté de la cloche (1), dont la longueur est transversale à la direction d'avance de la cloche (1) sur la surface à décaper ; et  - an elongated suction opening (2), located on one side of the bell (1), whose length is transverse to the direction of advance of the bell (1) on the surface to be stripped; and
- deux buses (6) montées sur un bras (5) rotatif, de type dites "à jet crayon", c'est- à-dire à jet serré, compact, en bâtonnet, le bras rotatif (5) tournant dans un plan incliné par rapport à l'horizontale de telle sorte que chaque buse (6) se trouve tour à tour, à chaque rotation du bras (5), en une position proche de la surface à décaper et en une position éloignée de cette surface, l'inclinaison étant telle que ladite position éloignée est située du côté de l'ouverture d'aspiration (2) et que ladite position proche est du côté opposé à cette ouverture d'aspiration.  two nozzles (6) mounted on a rotary arm (5) of the so-called "pencil jet" type, that is to say with a tight, compact, rod-like jet, the rotating arm (5) rotating in a plane inclined relative to the horizontal so that each nozzle (6) is in turn, at each rotation of the arm (5), in a position close to the surface to be etched and at a position remote from this surface, inclination being such that said remote position is located on the side of the suction opening (2) and said close position is on the opposite side to this suction opening.
2. Ensemble de décapage selon la revendication 1 , caractérisé en ce que l'angle d'inclinaison du bras (5) par rapport à l'horizontale est compris entre 10 et 30°, et est de préférence de 20°. 2. stripping assembly according to claim 1, characterized in that the angle of inclination of the arm (5) relative to the horizontal is between 10 and 30 °, and is preferably 20 °.
3. Ensemble de décapage selon la revendication 1 ou la revendication 2, caractérisé en ce que chaque buse (6) est rotative autour d'un axe et en ce que le jet (7) émis par chaque buse (6) est incliné par rapport à cet axe de rotation. 3. stripping assembly according to claim 1 or claim 2, characterized in that each nozzle (6) is rotatable about an axis and in that the jet (7) emitted by each nozzle (6) is inclined relative to to this axis of rotation.
4. Ensemble de décapage selon la revendication 3, caractérisé en ce que l'angle d'inclinaison du jet (7) par rapport à l'axe de rotation est compris entre 10 et 30°, et est de préférence de 20°. 4. stripping assembly according to claim 3, characterized in that the angle of inclination of the jet (7) relative to the axis of rotation is between 10 and 30 °, and is preferably 20 °.
5. Ensemble de décapage selon l'une des revendications 1 à 4, caractérisé en ce que le jet (7) de l'une des buses (6) est incliné sur un côté d'un plan passant par le bras (5) et par l'axe de rotation de ce bras (5), tandis que le jet (7) de l'autre buse (6) est incliné sur l'autre côté de ce même plan. 5. stripping assembly according to one of claims 1 to 4, characterized in that the jet (7) of one of the nozzles (6) is inclined on one side of a plane passing through the arm (5) and the axis of rotation of this arm (5), while the jet (7) of the other nozzle (6) is inclined on the other side of the same plane.
6. Ensemble de décapage selon la revendication 5, caractérisé en ce que l'angle d'inclinaison des jets (7) par rapport audit plan est compris entre 3 et 10° environ. 6. stripping assembly according to claim 5, characterized in that the angle of inclination of the jets (7) relative to said plane is between 3 and 10 °.
7. Ensemble de décapage selon l'une des revendications 1 à 6, caractérisé en ce qu'il comprend une centrale d'aspiration (10) incluant un réservoir (1 1) de recueil de l'eau aspirée par la cloche (1) et une pompe (12) d'évacuation de cette eau hors de ce réservoir, la centrale comprenant des moyens (13) d'agitation des matières décapées dans le réservoir (1 1). 7. Pickling assembly according to one of claims 1 to 6, characterized in that it comprises a suction unit (10) including a reservoir (1 1) for collecting water sucked by the bell (1). and a pump (12) for discharging this water out of this tank, the plant comprising means (13) for agitating the etched material in the tank (1 1).
8. Ensemble de décapage selon la revendication 7, caractérisé en ce que les moyens d'agitation sont situés au niveau de l'orifice d'aspiration de la pompe (12). 8. stripping assembly according to claim 7, characterized in that the stirring means are located at the suction port of the pump (12).
9. Ensemble de décapage selon la revendication 8, caractérisé en ce que les moyens d'agitation sont sous forme d'une proj ection d'eau au niveau de l'orifice d'aspiration de la pompe (12), depuis l'intérieur du conduit s'étendant en aval de cet orifice. 9. Pickling assembly according to claim 8, characterized in that the stirring means are in the form of a projection of water at the suction port of the pump (12) from the inside. duct extending downstream of this orifice.
10. Ensemble de décapage selon la revendication 7, caractérisé en ce que :10. Pickling assembly according to claim 7, characterized in that:
- la pompe d'évacuation est du type "à effet wortex", c'est-à-dire comprenant une cloche placée dans le fond du réservoir, à l'intérieur de laquelle tourne une hélice de génération d'un mouvement tourbillonnaire dans la cloche, cette cloche étant reliée à une conduite d'aspiration de l'eau chargée ainsi mise en mouvement ; the evacuation pump is of the "wortex-effect" type, that is to say comprising a bell placed in the bottom of the tank, inside which a propeller for generating a swirling movement in the bell, this bell being connected to a suction line charged water and set in motion;
- lesdits moyens d'agitation sont sous la forme d'au moins deux buses de projection d'eau placées à proximité du fond du réservoir, dont les jets sont dirigés dans des directions opposées, plus ou moins tangentielles à la paroi du réservoir, ou inclinées en direction du centre du fond du réservoir. said stirring means are in the form of at least two water spray nozzles placed near the bottom of the tank, the jets of which are directed in opposite directions, more or less tangential to the wall of the tank, or inclined towards the center of the bottom of the tank.
1 1. Ensemble de décapage selon l'une des revendications 1 à 10, caractérisé en ce qu'il comprend une unité de filtration des effluents. 1. Stripping assembly according to one of claims 1 to 10, characterized in that it comprises a filtration unit effluents.
12. Ensemble de décapage selon l'une des revendications 1 à 1 1 , caractérisé en ce qu'il comprend une pluralité de bacs de décantation (20) adjacents les uns aux autres, permettant, par le passage de l'eau d'un bac (20) à un autre, de réaliser des décantations successives de l'eau récupérée. 12. stripping assembly according to one of claims 1 to 1 1, characterized in that it comprises a plurality of settling tanks (20) adjacent to each other, allowing, by the passage of water a tank (20) to another, to carry out successive decantations of the recovered water.
PCT/IB2014/059001 2013-02-19 2014-02-14 Assembly for etching a surface by spraying high-pressure water at said surface WO2014128604A1 (en)

Applications Claiming Priority (4)

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US201361766408P 2013-02-19 2013-02-19
US61/766,408 2013-02-19
FR1354209 2013-05-07
FR1354209A FR3002166B1 (en) 2013-02-19 2013-05-07 ASSEMBLY FOR REMOVING A SURFACE BY PROJECTING WATER AT HIGH PRESSURE ON THIS SURFACE

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US10502510B2 (en) 2016-02-09 2019-12-10 Babcock Power Services, Inc. Cleaning tubesheets of heat exchangers

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2204783A (en) * 1987-05-13 1988-11-23 Harben Systems Ltd Surface cleaning equipment
DE202004005386U1 (en) * 2004-04-01 2004-06-17 Krumm, Wolfgang, Prof. Dr.-Ing. Cleaning plant, especially descaling plant

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2204783A (en) * 1987-05-13 1988-11-23 Harben Systems Ltd Surface cleaning equipment
DE202004005386U1 (en) * 2004-04-01 2004-06-17 Krumm, Wolfgang, Prof. Dr.-Ing. Cleaning plant, especially descaling plant

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