EP0358648B1 - Appareil de sablage abrasif - Google Patents

Appareil de sablage abrasif Download PDF

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Publication number
EP0358648B1
EP0358648B1 EP88902905A EP88902905A EP0358648B1 EP 0358648 B1 EP0358648 B1 EP 0358648B1 EP 88902905 A EP88902905 A EP 88902905A EP 88902905 A EP88902905 A EP 88902905A EP 0358648 B1 EP0358648 B1 EP 0358648B1
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EP
European Patent Office
Prior art keywords
receptacles
receptacle
liquid
delivery line
pressurised fluid
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.)
Expired - Lifetime
Application number
EP88902905A
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German (de)
English (en)
Other versions
EP0358648A1 (fr
Inventor
Bruce Nicholson
Ronald Davis
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Gagemarch Ltd
Original Assignee
Gagemarch Ltd
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.)
Filing date
Publication date
Application filed by Gagemarch Ltd filed Critical Gagemarch Ltd
Priority to AT88902905T priority Critical patent/ATE69573T1/de
Publication of EP0358648A1 publication Critical patent/EP0358648A1/fr
Application granted granted Critical
Publication of EP0358648B1 publication Critical patent/EP0358648B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
    • B24C7/00—Equipment for feeding abrasive material; Controlling the flowability, constitution, or other physical characteristics of abrasive blasts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/14—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas designed for spraying particulate materials
    • B05B7/1404—Arrangements for supplying particulate material
    • B05B7/1431—Arrangements for supplying particulate material comprising means for supplying an additional liquid
    • B05B7/1436—Arrangements for supplying particulate material comprising means for supplying an additional liquid to a container where the particulate material and the additional liquid are brought together
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/24—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas with means, e.g. a container, for supplying liquid or other fluent material to a discharge device
    • B05B7/26—Apparatus in which liquids or other fluent materials from different sources are brought together before entering the discharge device
    • B05B7/28—Apparatus in which liquids or other fluent materials from different sources are brought together before entering the discharge device in which one liquid or other fluent material is fed or drawn through an orifice into a stream of a carrying fluid
    • B05B7/32—Apparatus in which liquids or other fluent materials from different sources are brought together before entering the discharge device in which one liquid or other fluent material is fed or drawn through an orifice into a stream of a carrying fluid the fed liquid or other fluent material being under pressure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
    • B24C7/00—Equipment for feeding abrasive material; Controlling the flowability, constitution, or other physical characteristics of abrasive blasts
    • B24C7/0007—Equipment for feeding abrasive material; Controlling the flowability, constitution, or other physical characteristics of abrasive blasts the abrasive material being fed in a liquid carrier
    • B24C7/0015—Equipment for feeding abrasive material; Controlling the flowability, constitution, or other physical characteristics of abrasive blasts the abrasive material being fed in a liquid carrier with control of feed parameters, e.g. feed rate of abrasive material or carrier
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F21/00—Implements for finishing work on buildings
    • E04F21/02—Implements for finishing work on buildings for applying plasticised masses to surfaces, e.g. plastering walls
    • E04F21/06—Implements for applying plaster, insulating material, or the like
    • E04F21/08—Mechanical implements
    • E04F21/12—Mechanical implements acting by gas pressure, e.g. steam pressure

Definitions

  • This invention relates to abrasive blasting apparatus especially but not exclusively a wet abrasive blasting apparatus.
  • the abrasive medium In wet abrasive blasting apparatus the abrasive medium is entrained in a pressurised liquid flow or gaseous-entrained liquid flow (hereinafter for convenience simply referred to as "pressurised fluid flow") and is directed against the surface or other article to be treated by a controllable nozzle. It is common practice with such an apparatus to add a dry abrasive medium into a gaseous stream and then to add liquid to wet the abrasive medium prior to its egress from the nozzle outlet so that dust generation at the work area is reduced.
  • pressurised fluid flow gaseous-entrained liquid flow
  • This liquid is normally delivered into the abrasive and pressurised fluid flow by a separate pump the inclusion of which makes the cost of the blasting apparatus more expensive than is desirable, renders the blasting apparatus more prone to breakdown, and requires a greater technical knowledge of the operator.
  • a further disadvantage is that variations in the entraining fluid pressure require either manual adjustments of the pressure outflow from the pump, or the provision of a pressure balancing control means between the entraining fluid supply and the pump.
  • this invention has the disadvantage that two separate sources of pressurised fluid are required, one to be used for blasting in which the liquid and abrasive mixture are entrained and the other, at a higher pressure, to be used solely for pressurising a chamber of the vessel in which the liquid is stored to force it into a second chamber where it is mixed with the abrasive against the pressure of the first source.
  • batches of wet abrasive to be blasted are pre-mixed in the second chamber before being dropped into the lower vessel for blasting. This has the disadvantage that no alteration can be made to the ratio of the constituents of a batch during blasting.
  • the apparatus according to the invention will also allow the ratio of the blast materials to one another to be varied continuously during blasting, as desired.
  • the apparatus according to this invention may be used dry, or the apparatus may, more generally, be employed for purposes other than abrasive blasting. More detailed references to these alternative uses will be made later.
  • apparatus comprises a first receptacle adapted to contain a particulate material or a particulate material and a liquid combination and including an inlet and a bottom outlet, a second receptacle to contain material to be mixed with the contents of the first receptacle and also including an inlet and a bottom outlet, a delivery line along which an entraining pressurised fluid can be fed from a source and with which the receptacles are adapted to communicate, and means to direct pressurised fluid from the source into one of the receptacles behind its contents in terms of its contents outflow from the receptacle through its bottom outlet, and characterised in that a communication exists between the receptacles substantially to balance the fluid pressure system both between the receptacles themselves and between the receptacles and the delivery line, and in that the bottom outlets of the receptacles each communicate with the delivery line so that a flow of pressurised fluid along the delivery line can thereby
  • the first and second receptacles are located one within the other.
  • the first and second receptacles are separated by a porous wall.
  • the apparatus to mix a plurality of separately contained media, at least one of which is a particulate material or a particulate material and a liquid combination, by entraining the media from the first and second receptacles into a flow of pressurised fluid in the delivery line and simultaneously applying the pressurised fluid behind at least one of the media in terms of its outflow from its receptacle, and characterised in that the fluid pressure between the interiors of the first and second receptacles themselves and between the interiors of the first and second receptacles and the delivery line is substantially balanced so that the flow of pressurised fluid can thereby substantially simultaneously entrain the contents of the first and the second receptacles for dispersal into the fluid flow in the delivery line.
  • the present invention can, therefore, provide a pumpless wet abrasive blasting apparatus and as the entraining pressurised fluid is also applied in this instance directly to an abrasive and a liquid combination and a separate liquid there is instantaneous and equal adjustment to the entraining pressurised fluid and direct pressurised fluid upon any pressure variations occurring at the pressurised fluid source.
  • the apparatus comprises two co-axial concentric receptacles or chambers 10 and 11.
  • the inner chamber 10 serves to contain the abrasive medium which is for example sand, which sand may be wet sand.
  • the present invention it is not necessary as is customary with wet abrasive blasting apparatus using sand as the abrasive medium to employ dry sand which is often delivered to the apparatus bagged.
  • the present invention provides a wet abrasive blasting apparatus in which it is possible to re-use wet sand.
  • the inner chamber 10 in use also, of course, contains water and it is to be noted that the water is always introduced first into the inner chamber 10 followed by the sand (or other solid abrasive medium) to ensure that there is effective mixing of the sand and water and no clogging at the outlet 12 of the inner chamber.
  • the introduction of the sand into the water in the inner chamber 10 causes the sand to sink through the water thus getting wet immediately.
  • the introduction of pressurised air into the inner chamber 10, as hereafter described, causes a swirling action in the inner chamber 10 to complete the mixing.
  • the outlet 12 is disposed at the bottom of the chamber 10 and the inlet 13 of the inner chamber 10 is provided at the top of same.
  • the outer chamber 11 in use, contains additional water for addition to the sand/water mixture egressing from the inner chamber 10 as will be described later.
  • the inlet 13 to the inner chamber 10 is controlled by an air lock valve, for example a mushroom-type valve, 15, which valve 15 is closed on application thereto of pressurised air.
  • an air lock valve for example a mushroom-type valve, 15, which valve 15 is closed on application thereto of pressurised air.
  • the apparatus has as its operational or motive fluid pressurised air which passes from a pressurised air source, such for example as a pressurised air mains (not shown) to a delivery pipe system generally indicated at 16.
  • a pressurised air source such for example as a pressurised air mains (not shown)
  • a delivery pipe system generally indicated at 16.
  • Air under pressure is delivered from a source (not shown), possibly an air compressor to the pipe system 16 at the main inlet 17 controlled by a valve 18.
  • Pressurised air is delivered to the valve 15 by a pipe 19, which air then flows from the inner chamber 10 into the outer chamber 11 via the hole 14.
  • Pressurised air is also delivered by a pipe 20, valve controlled as indicated at 21 to an abrasive blasting hose and nozzle (not shown) coupled to the pipe 20 by a bayonet joint connection as indicated at 38.
  • the nozzle of the abrasive blasting hose is provided with a deadman's handle so that the abrasive blasting operation is controlled by the operator (release of the handle closing the nozzle and discontinuing the abrasive blasting operation).
  • the blasting nozzle is of the lance type and not a conventional venturi nozzle as it has been found that abrasive tends to lodge in and clog a venturi nozzle during use of the apparatus.
  • the lance provides an outflow for the pressurised fluid which has a smaller bore than that of the delivery pipe 20 effectively to concentrate the pressurised fluid flow therethrough so that it can be appropriately directed by the operator. It has been found that the lance operates effectively when the ratio of the diameters of the pipe 20 and of the lance is in the range 1.5 : 1 to 10 : 1 inclusive with a lance that is at least 100 mm in length.
  • the diameter of the bore of the lance is of the order of 15 mm for a 45 mm diameter pipe 20 for delivery of pressurised air at 10 cubic metres per minute at 100 psi.
  • the length of the lance is usually of the order of 450 mm to enable the operator to distance himself from the blasting and grip the lance effectively.
  • the chambers 10 and 11 communicate with the pipe 20 via pipes 22 and 23 respectively each of which is respectively controlled by a valve 24, 25.
  • pipes 22, 23 provide communication between the bottom of the chamber 10 and 11 with the pipe 20.
  • a fast exhaust pipe 26 Adjacent the top of the outer chamber 11 there is provided a fast exhaust pipe 26 controlled by a valve 27.
  • Water is supplied to the inner and outer chambers from for example a mains water supply (not shown) by a pipe 28 incorporating a non-return valve 29 and an open/close valve 30.
  • the water is delivered directly into the chamber 11 by the pipe 28 to which is connected a pipe 31 for delivering water into the inner chamber 10, this pipe being valve controlled as indicated 32.
  • a water level control or overflow pipe 33 communicates with the inner chamber 10, this pipe 33 also being valve controlled as indicated at 34.
  • valves 18, 21, 24, 25, 27, 30, 32 and 34 are all closed. Valves 30 and 32 are then opened to allow water to flow into the inner and outer chambers 10, 11. A given quantity of abrasive medium for example sand (wet or dry) is then fed through the inlet 13 which is open owing to no air pressure being supplied to the valve 15 to close same. Water continues to be fed into the chambers 10 and 11, and, when the required total volume of sand and water is delivered into the inner chamber 10, water will flow out of the pipe 33. At this stage, the valve 32 is closed followed by the valve 34. When sufficient water has been fed into the chamber 11, the valve 30 is also closed.
  • abrasive medium for example sand (wet or dry)
  • valve 17 is then opened causing the valve 15 to be moved to the closed position and pressurised air to be introduced into the inner chamber and, through the communication hole 14, into the outer chamber 11.
  • Valve 21 is now opened allowing pressurised air to flow along the pipe towards the hose and nozzle (not shown). Valves 24 and 25 are then opened to the desired degree to allow the water/sand mixture from the chamber 10 and additional water from the chamber 11 to be moved into, and be entrained by, the airstream for delivery along the hose out of the nozzle whence it is directed against the surface or other article to be abrasive blasted.
  • the sand/water mixture and the additional water are subjected to the same air pressure in the upper part of the chambers 10 and 11 as that which is used to entrain them out of their respective chambers.
  • any variation in the air pressure at source is automatically and instantaneously applied to both the entraining air and the internal air contained within the chambers 10 and 11.
  • valve 24 can be closed, and water only from the chamber 11 be fed into the airstream; for the purposes of washing down the work area.
  • valves 24 and 25 can be closed leaving air travelling through the hose and nozzle, for blowing or drying purposes.
  • the air feed pressure can be varied up or down in order to achieve different rates of working or different types or levels of finish on the work area.
  • a pressure gauge may, in these circumstances, be included in the air inlet line 17 in order that the operator can more accurately judge the working pressure.
  • the normal sequence of operations for shutting off the apparatus is first of all to close the valve 24 to prevent any further emission of abrasive.
  • the valve 25 may be closed to prevent any further water going down the line.
  • the valves 21 and 18 are closed.
  • the valve 27 may then be opened to allow fast reduction of the air pressure in vessels 10 and 11, which in turn allow air lock valve 15 to open.
  • this can be activated manually, or triggered automatically (by release of the deadman's handle, for example), by opening the valve 27, preferably with a simultaneous closure of the valve 18.
  • Means is provided to effect fast filling of the chamber 10 with substances which do not flow quickly on their own (e.f. wet sand or slurry).
  • Such means consists of a water jet 35 situated inside and in close proximity to the wall of the filling hopper 36 at the top of the apparatus.
  • the jet 35 is circumferentially-directed that is swirls water round the hopper area, when required, and enables the entry of the material through the open inlet 13 and into the chamber 10.
  • a valve 37 controls the flow of water to the jet 35.
  • additives can be included in either the water in the chamber 10, or alternatively, in the water in the chamber 11, such an additive being, for example, a rust inhibitor if the surface or articles being treated is formed of metal, or an anti-freeze material for low temperature working.
  • the additive may be introduced in powder or granular form, mixed with the abrasive. Because the total volume of material in both chambers is known at commencement of the operational sequence, pre-measured doses of additive can be included in either chamber to give an accurate dilution of the additive.
  • the wet abrasive blasting apparatus described above can be used dry and in this case the dry abrasive or other abrasive medium is simply contained within the chamber 10, the water supply system being closed off and the sand or other abrasive medium being entrained along pipe 20 through the pipe 22 via the open valve 24, the sand being subjected to the internal air pressure equal to the entraining air pressure as described above.
  • the apparatus can also be used for ice blasting and in this case the inner chamber will contain ice particles and water and the outer chamber 11 will contain water. It is to be noted that the ice particles formed from water will be prevented from coagulating (freezing together) by introducing suitable additives into the water prior to freezing. Suitable additives would be for example poly-phosphates.
  • the above described apparatus can, as aforesaid, be used either wet or dry as described and it can be used for washing down using water only from chamber 10 or even from chambers 10 and 11.
  • the apparatus provides faster cleaning than known wet abrasive blasting apparatus (all other operational factors being equal). It can be up to 20% faster or even more in certain circumstances. The reason for this is that each particle of abrasive, having being soaked under pressure, is enclosed in a film of water so that its effective weight is increased as it leaves the blast nozzle. Thus its momentum is greater and it does more work when it strikes the workpiece surface.
  • the apparatus is not subject to "choking" as are known apparatus which, on occasion, become blocked at the abrasive outlet of the pressure vessel.
  • these blockages are usually relieved by turning off the main air supply (e.g. closing valve 21) momentarily.
  • the apparatus is relatively cheap to manufacture compared with known apparatus.
  • the apparatus can be readily used in high humidity areas since contamination by moisture will not adversely affect it.
  • the apparatus is spark free and static free. It is pumpless as will be clear from the above and due to the lack of pump there is obviously no need to provide a pump driving generator.
  • the apparatus has no mechanical working parts and due to the simple nature of the apparatus all parts can easily be changed and renewed in a short time.
  • the apparatus is safe to use and as a result can be used by unskilled labour.
  • the apparatus when used in a wet-blasting process, produces far less air-borne dust than comparable known apparatus, and therefore far less fall-out at any given distance from the work area. This makes it environmentally more acceptable.
  • the apparatus can be used with a wide range of easily obtainable abrasives wet and dry and in use it is considered that there will be a lower usage of abrasive than with other wet abrasive blasting systems (in the region of 20% less) and the apparatus involves less clearing up on site than conventional wet abrasive blasting apparatus.
  • the apparatus according to the present invention is extremely versatile and can be used, inter alia , as follows:
  • a porous wall may be provided between the chambers 10, 11 in order to allow for the movement of, say, a liquid from chamber 11 into chamber 10.
  • a liquid from chamber 11 into chamber 10 For example, when ice blasting, ice and water would be put into chamber 10, and water into chamber 11. If the water in chamber 10 is reduced too much during the blasting operation, then water can percolate from chamber 11 to chamber 10 and so prevent clogging of the ice in chamber 10.
  • an outer chamber is used for the abrasive/liquid medium and an inner chamber for the liquid medium.
  • the inner chamber can be of a small volume with respect to the outer chamber and a porous wall can be used to divide the chambers so that the liquid flows from the outer chamber into the inner chamber to charge it with liquid prior to and during the blasting to obviate the need for separate pipework and other filling means.
  • Some of the abrasive may also pass into the inner chamber through the wall but this does not inhibit the mixing and blasting process. However, this is preferably prevented by making the pore size in the wall such that passage of the abrasive therethrough is prevented.
  • the inner chamber is reduced to a porous pipe located in the outer chamber and communicating therewith above the level of the media contained therein, through which pipe liquid can be drawn off from the liquid/abrasive medium and entrained separately in the pressurised fluid from the abrasive/liquid medium.
  • the apparatus may comprise more than two chambers provided all the chambers are in communication so that there is in the chambers air pressure equal to the entraining fluid pressure.
  • the chambers may be located one within the other and be coaxial and concentric as in the above described apparatus or they may be disposed in side-by-side relationship either parallel one with another or in juxtaposed coaxial relationship.
  • the chambers may in fact be separate one from another and there may be two or more chambers provided there is communication between them to ensure common fluid pressure within all the chambers, which pressure is equal to and variable with the entraining fluid pressure.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Nozzles (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
  • Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)

Abstract

Un appareil et un procédé servent à mélanger des milieux conservés séparément, tels ceux utilisés pendant une opération de sablage abrasif humide. L'appareil comprend un réservoir (10) de milieu abrasif/liquide, un réservoir (11) de liquide et une ligne d'alimentation (20) d'un fluide pressurisé. Les réservoirs (10, 11) sont en communication par des tuyaux (22, 23) avec la ligne d'alimentation (20), de sorte que le liquide et le milieu abrasif/liquide soient entraînés par le fluide pressurisé. Les réservoirs communiquent l'un avec l'autre par un orifice (14) de façon à équilibrer la pression hydraulique entre les deux, un dispositif (15, 19) étant également prévu afin de fournir du liquide pressurisé à au moins un des réservoirs (10, 11), d'équilibrer sensiblement le système de pression hydraulique entre les réservoirs (10, 11) et la ligne d'alimentation (20) et de faciliter l'écoulement du milieu abrasif/liquide et du liquide dans le fluide d'entraînement. Le procédé comprend l'entraînement de milieux conservés séparement, tels qu'un milieu abrasif/liquide et un milieu liquide, dans un courant de fluide pressurisé, accompagné de l'application simultanée du fluide pressurisé aux milieux contenus dans les réservoirs (10, 11) afin d'équilibrer le système de pression hydraulique entre les réservoirs eux-mêmes et entre les réservoirs et la ligne d'alimentation, facilitant ainsi leur décharge dans le courant d'entraînement.

Claims (10)

1. Appareil comprenant un premier réceptacle (10) disposé pour contenir un matériau pulvérulent ou une combinaison d'un liquide et d'un matériau pulvérulent et comprenant une entrée (13) et une sortie inférieure (12), un deuxième réceptacle (11) pour contenir le matériau à mélanger au contenu du premier réceptacle (10) et comprenant aussi une entrée (28) et une sortie inférieure (23), une conduite d'alimentation (20) par laquelle un fluide d'entraînement sous pression peut être introduit depuis une source et à laquelle peuvent s'adapter les réceptacles (10, 11) pour communiquer avec elle, et un moyen (19) pour amener le fluide sous pression directement depuis la source dans l'un des réceptacles (10) derrière leur contenu par rapport à leur sortie de contenu depuis le réceptacle (10) à travers sa sortie inférieure (12), et caractérisé en ce qu'il existe une communication (14) entre les réceptacles (10, 11) afin d'équilibrer essentiellement la pression du fluide à la fois entre les réceptacles (10, 11) eux-mêmes et entre les réceptacles (10, 11) et la conduite d'alimentation (20), et en ce que les sorties inférieures (12, 23) des réceptacles (10, 11) communiquent chacune avec la conduite d'alimentation (20) si bien qu'un flux de fluide sous pression par la conduite d'alimentation (20) peut entraîner de manière essentiellement simultanée les contenus des premier et deuxième réceptacles (10, 11) pour les disperser dans le débit de fluide d'alimentation (20).
2. Appareil selon la revendication 1, caractérisé en ce que les premier et deuxième réceptacles (10, 11) sont situés l'un (10) dans l'autre (11).
3. Appareil selon la revendication 1 ou 2, caractérisé en ce que l'entrée (13) dans le premier réceptacle (10) pour l'introduction du matériau pulvérulent ou de la combinaison d'un liquide et de matériau pulvérulent est équipée d'une vanne (15) qui est fermée par l'application à celle-ci de fluide sous pression provenant du réceptacle (10).
4. Appareil selon l'une quelconque des revendications 1 à 3, caractérisé en ce qu'il est prévu un moyen (35) pour permettre qu'un jet de liquide orienté périphériquement fasse tourbillonner le matériau pulvérulent, afin de faciliter sa pénétration dans le premier réceptacle (10).
5. Appareil selon l'une quelconque des revendications 1 à 4, caractérisé en ce que la conduite d'alimentation (20) se termine par une lance comprenant un tube rigide à alésage droit d'au moins 100 mm de longueur et en ce que le rapport des diamètres de la conduite d'alimentation (20) et de la lance est compris entre 1,5 : 1,0 et 10 : 1 inclus.
6. Appareil selon la revendication 2 ou l'une quelconque des revendications 3 à 5 lorsqu'elles dépendent de la revendication 2, caractérisé en ce que les premier et deuxième réceptacles (10, 11) sont séparés par une paroi poreuse.
7. Appareil selon la revendication 6,caractérisé en ce que le réceptacle extérieur (11) comprend le premier réceptacle qui est conçu pour contenir une combinaison de liquide et de matériau pulvérulent, et le réceptacle intérieur (10) comprend le deuxième réceptacle qui est conçu pour contenir un liquide, l'entrée du deuxième réceptacle comprenant la paroi poreuse à travers laquelle peut passer le liquide vers le deuxième réceptacle (10) depuis le premier réceptacle (11).
8. Utilisation de l'appareil selon la revendication 1 pour mélanger plusieurs produits contenus séparément, dont l'un au moins d'entre eux est un matériau pulvérulent ou une combinaison d'un liquide et d'un matériau pulvérulent en entraînant les produits depuis les premier et deuxième réceptacles (10, 11) dans un flux de fluide sous pression (20) dans la conduite d'alimentation (20) et en appliquant simultanément le fluide sous pression derrière au moins l'un des produits par rapport à leur sortie hors du réceptacle (10), et caractérisé en ce que la pression du fluide entre les intérieurs des premier et deuxième réceptacles (10, 11) eux-même et entre les intérieurs des premier et deuxième réceptacles (10, 11) de la conduite d'alimentation (20) est essentiellement équilibrée, si bien que le flux de fluide sous pression peut entraîner de manière essentiellement simultanée les contenus des premier et des deuxièmes réceptacles (10, 11) afin de les disperser dans le flux de fluide dans la conduite d'alimentation (20).
9. Utilisation selon la revendication 8, dans laquelle l'un des produits est un liquide et caractérisée en ce que la température du liquide est supérieure à la température ambiante.
10. Utilisation selon la revendication 8, caractérisée en ce que le matériau pulvérulent est de la glace.
EP88902905A 1987-04-09 1988-04-06 Appareil de sablage abrasif Expired - Lifetime EP0358648B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT88902905T ATE69573T1 (de) 1987-04-09 1988-04-06 Sandstrahleinrichtung.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB878708499A GB8708499D0 (en) 1987-04-09 1987-04-09 Abrasive blasting apparatus
GB8708499 1987-04-09

Publications (2)

Publication Number Publication Date
EP0358648A1 EP0358648A1 (fr) 1990-03-21
EP0358648B1 true EP0358648B1 (fr) 1991-11-21

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Family Applications (1)

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EP88902905A Expired - Lifetime EP0358648B1 (fr) 1987-04-09 1988-04-06 Appareil de sablage abrasif

Country Status (15)

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EP (1) EP0358648B1 (fr)
JP (1) JPH02502982A (fr)
KR (1) KR890700430A (fr)
AU (1) AU606416B2 (fr)
BR (1) BR8807453A (fr)
CA (1) CA1320643C (fr)
DE (1) DE3866355D1 (fr)
DK (1) DK170697B1 (fr)
ES (1) ES2008443A6 (fr)
GB (1) GB8708499D0 (fr)
GR (1) GR1000428B (fr)
IE (1) IE61329B1 (fr)
NO (1) NO169702C (fr)
RU (1) RU2051020C1 (fr)
WO (1) WO1988007915A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1150801A1 (fr) 1998-12-04 2001-11-07 The Farrow System Limited Procede utile pour eliminer des revetements sur des surfaces

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2230211A (en) * 1989-04-05 1990-10-17 Baldwin & Stanton Limited A wet abrasive blasting machine
AU6179190A (en) * 1989-08-07 1991-03-11 Insituform Group Limited Improvements relating to cutting apparatus
DE4234869C2 (de) * 1992-10-16 1994-10-13 Hbp Strahltechnik Vertriebs Gm Sandstrahler
DE4430133C2 (de) * 1994-08-25 1996-08-29 Hubert Busch Strahlkessel zum Ausbringen eines Strahlmittels
KR100323496B1 (ko) * 1999-12-31 2002-02-06 윤배원 반도체 웨이퍼의 재생 장치 및 방법
GB2382317B (en) * 2001-11-22 2004-05-12 Quill Internat Ind Plc Abrasive blasting apparatus
NO319655B1 (no) * 2003-10-24 2005-09-05 Watech As Anordning for overflaterensing

Family Cites Families (7)

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DE184027C (fr) *
FR389216A (fr) * 1907-06-20 1908-09-03 Georges Franche Sableuse pour le travail des pièces métalliques ou autres
CH202922A (de) * 1938-05-12 1939-02-15 Serva Technik A G Verfahren und Vorrichtung zum Auftragen von Farben.
US2389616A (en) * 1943-07-22 1945-11-27 Franklin Godfrey Method of sandblasting and apparatus therefor
US2942860A (en) * 1956-03-05 1960-06-28 Ian M Ridley Concrete gun, mixer and sandblaster
US3021646A (en) * 1959-04-16 1962-02-20 Sumner B Williams Sand blast apparatus
US3091369A (en) * 1960-07-19 1963-05-28 Sackett & Sons Co A J Weighing and mixing hopper

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1150801A1 (fr) 1998-12-04 2001-11-07 The Farrow System Limited Procede utile pour eliminer des revetements sur des surfaces

Also Published As

Publication number Publication date
KR890700430A (ko) 1989-04-24
GR880100228A (en) 1989-01-31
IE881032L (en) 1988-10-09
AU606416B2 (en) 1991-02-07
BR8807453A (pt) 1990-05-15
ES2008443A6 (es) 1989-07-16
DK492889D0 (da) 1989-10-06
WO1988007915A1 (fr) 1988-10-20
RU2051020C1 (ru) 1995-12-27
EP0358648A1 (fr) 1990-03-21
IE61329B1 (en) 1994-11-02
DE3866355D1 (de) 1992-01-02
CA1320643C (fr) 1993-07-27
AU1544888A (en) 1988-11-04
NO885374D0 (no) 1988-12-02
JPH02502982A (ja) 1990-09-20
GB8708499D0 (en) 1987-05-13
NO169702C (no) 1992-08-05
DK492889A (da) 1989-10-06
DK170697B1 (da) 1995-12-11
NO885374L (no) 1988-12-02
GR1000428B (el) 1992-07-30
NO169702B (no) 1992-04-21

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