EP0393918A2 - Traitement de surfaces - Google Patents

Traitement de surfaces Download PDF

Info

Publication number
EP0393918A2
EP0393918A2 EP90303890A EP90303890A EP0393918A2 EP 0393918 A2 EP0393918 A2 EP 0393918A2 EP 90303890 A EP90303890 A EP 90303890A EP 90303890 A EP90303890 A EP 90303890A EP 0393918 A2 EP0393918 A2 EP 0393918A2
Authority
EP
European Patent Office
Prior art keywords
canopy
mixture
abrasive
cit
way
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.)
Withdrawn
Application number
EP90303890A
Other languages
German (de)
English (en)
Other versions
EP0393918A3 (fr
Inventor
Stewart Ives "The Ives" Ashworth
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.)
Vapormatt Ltd
Original Assignee
Vapormatt 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 Vapormatt Ltd filed Critical Vapormatt Ltd
Publication of EP0393918A2 publication Critical patent/EP0393918A2/fr
Publication of EP0393918A3 publication Critical patent/EP0393918A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
    • B24C3/00—Abrasive blasting machines or devices; Plants
    • B24C3/02—Abrasive blasting machines or devices; Plants characterised by the arrangement of the component assemblies with respect to each other
    • B24C3/06—Abrasive blasting machines or devices; Plants characterised by the arrangement of the component assemblies with respect to each other movable; portable
    • B24C3/062—Abrasive blasting machines or devices; Plants characterised by the arrangement of the component assemblies with respect to each other movable; portable for vertical surfaces

Definitions

  • This invention relates to the treatment of surfaces and provides a method of, and apparatus for, the treatment of surfaces, particularly metallic surfaces.
  • a method of treating a surface comprises placing a canopy in close proximity to the surface, the canopy defining an aperture allowing access to the surface, directing a pressurised mixture of abrasive material and fluid on to the surface by way of said aperture, and subsequently collecting at least part of the mixture after use by way of the canopy.
  • apparatus for treating a surface comprises a canopy for placing in close proximity to the surface, the canopy defining an aperture allowing access to the surface of a pressurised mixture of abrasive material and fluid, and provided with a means for subsequently collecting at least part of the mixture after use by way of the canopy.
  • the collected matter is preferably re-used, and preferably comprises mildly abrasive particles of plastics material.
  • the canopy is preferably provided with means enabling the canopy to be placed in sealing relationship with the surface.
  • apparatus 1 for treating the painted surface 2 of an aircraft fuselage 10 comprises an upright disposed canopy 3 for placing (as shown) in close proximity to the surface 2.
  • the canopy 3 defines an aperture 4 allowing access to the surface of a pressurised mixture of abrasive material and fluid, and is provided with flexible duct means 5 for subsequently collecting the mixture after use.
  • the abrasive media comprises particles of plastics or natural material, which are only mildly abrasive, whereby only paint is removed from the surface 2, leaving the anodised layer of the surface undamaged.
  • the abrasive mixture is supplied by a hand-held blast gun 6, which is preferably of the form disclosed by UK Patent No. 2,065,514 (Vapormatt Limited).
  • the gun 6 is provided with an internal mixing chamber whereby separate flows of the abrasive particles and water are introduced via supply ducts 7, 8 of flexible construction, before being discharged on to the surface 2 by way of a nozzle.
  • the abrasive mixture can also be fed to a blast nozzle by way of an air-fed injector connected to a pressurised container.
  • the good sealing (releasable) relationship between the surface 2 and the canopy 3 is maintained by suction means comprising manually-adjustable suckers 16 carried by screw-threaded rods 17 supported by oppositely-disposed flanges 18 on the face 19 of the canopy 3 remote from the seal 15.
  • the flexible seal 15 accommodates the curved fuselage surface 2 when pressed against the surface by the suckers 16.
  • the aperture 4 is of circular form and is cut in the face 19. That part of the canopy 3 below the aperture 4 forms a collecting space 20 for the used mixture of abrasive particles and water.
  • a height-adjustable stand 26 is provided for the operator 25. As shown in Figure 2, several operators 25, each with a stand 26, may be employed.
  • the used mixture flows from the space 20 to a mobile process generation and reclaimation unit 30 ( Figure 4), by way of the flexible duct 5.
  • the unit 30 comprises a plurality of blast generators 31, a storage space 32 for suction and blast hoses, a media storage area 33, media reclaimation equipment 34, with centrifugal separators 37, a vacuum unit 35 and an air compressor unit 36.
  • the blast generators 31 each comprise a pressure vessel wherein a mixture of abrasive particles and water (to aid particle flow) is propelled therefrom to a discharge nozzle by air at a pressure of between 1.0 and 10.0 bar.
  • the media reclaimation equipment 34 is used to separate abrasive particles and water supplied by way of the flexible duct 5 ( Figure 1) and vacuum unit 36.
  • the equipment 34 includes a non-magnetic sieve 65 to remove stones, paper etc, a magnetic sieve 66 for removal of metal particles, the centrifugal separators 37, an agitated settling tank 67 to remove fine particles of paint, skimmed off the top layer of water, and a centrifuge 68 to separate more dense particles.
  • the cleaned abrasive particles are stored in the area 33 before re-circulation via the blast generators 31.
  • a sump unit 40 comprises a box-like collector 41 which houses a scraping conveyor 46 comprising a plurality of laterally-disposed, interconnected beams 47 which carry rubber flaps 48.
  • the collector 41 is covered by a safety structure comprising grids 44 extending over the whole of the collector 41 which grids also provide a work platform.
  • the conveyor 46 uses the rubber flaps 48 to scrape the abrasive particles along the bottom of the collector 41 and towards a collection point adjacent flexible duct 45. The material is then removed by suction applied to the duct 45, by way of unit 36, to the reclaimation equipment 34 for subsequent re-use.
  • the conveyor 41 operates with an oscillating movement, oscillation being applied by an oscillator 49 having an actuating rod 58 connected to the conveyor 46.
  • Figure 6 illustrates a modified canopy 50 of elongate, rectangular form, defining an elongate access aperture 51.
  • the canopy 50 is provided with a peripheral seal 52 of hollow form, the interior of which is connected to suction means in the form of the vacuum unit 36 ( Figure 4) by a manifold 53 and a control valve (not shown).
  • the seal 52 is brought into operation automatically when the vacuum unit 36 is running.
  • the control valve breaks the vacuum when it is decided to change the position of the canopy 50 without taking the vacuum unit 36 out of operation.
  • a water rinse gun 54 with a supply hose 55 is provided for rinsing the cleaned surface.
  • a wider surface treatment band can be provided (which is particularly advantageous with the canopy 50 of Figure 6) by stacking several guns 6 side by side.
  • the shape of a canopy may vary according to requirements.
  • curved surfaces of wings 11 and engine cowlings 12 differ from the fuselage 10 of the aircraft 13
  • special canopies for such surfaces are best provided.
  • the shape of the apertures such as 4 and 51 can also vary, according to requirements.
  • a canopy can be used in a horizontal position, above or below the fuselage surface 2.
  • An alternative to a blast generator 31 comprises a tank wherein abrasive particles and water are agitated, by water jets or mechanical means and the mixture then pumped to the blast gun wherein it accelerated by compressed air. Two hoses are employed by this method.
  • overspray material not collected by the unit 40 of Figure 3 can be picked up by a mobile vehicle 60 which carries a vacuum collection unit 61.
  • the overspray material is picked up by a vacuum nozzle 62 disposed at the front of the vehicle 60.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Grinding-Machine Dressing And Accessory Apparatuses (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
EP19900303890 1989-04-19 1990-04-11 Traitement de surfaces Withdrawn EP0393918A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB898908843A GB8908843D0 (en) 1989-04-19 1989-04-19 Improvements in or relating to the treatment of surfaces
GB8908843 1989-04-19

Publications (2)

Publication Number Publication Date
EP0393918A2 true EP0393918A2 (fr) 1990-10-24
EP0393918A3 EP0393918A3 (fr) 1990-12-19

Family

ID=10655287

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19900303890 Withdrawn EP0393918A3 (fr) 1989-04-19 1990-04-11 Traitement de surfaces

Country Status (2)

Country Link
EP (1) EP0393918A3 (fr)
GB (2) GB8908843D0 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0631849A1 (fr) * 1993-07-01 1995-01-04 Brändle Metallbau AG Méthode et dispositif pour le nettoyage de surfaces
EP0640441A1 (fr) * 1993-08-31 1995-03-01 Holman, Harm Willem, Drs. Dispositif et procédé pour envelopper une construction à traiter
FR2802127A1 (fr) * 1999-12-09 2001-06-15 Biodecap Ind Nouveau plateau technique pour le decapage et/ou la peinture et les ateliers ainsi realises

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1436202B1 (fr) * 2001-10-18 2008-08-06 Bell Helicopter Textron Inc. Sac contenant un milieu abrasif

Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR846841A (fr) * 1938-06-03 1939-09-26 Procédé de sablage perfectionné, dispositifs et appareillage pour son application
GB891446A (en) * 1960-06-18 1962-03-14 Harold Charles Zieber Automatic blasting control
US3427763A (en) * 1966-07-18 1969-02-18 Woma Maasberg Co Gmbh W Method of treating solid surfaces
US3583821A (en) * 1969-04-02 1971-06-08 Melvin H Shaub Chip catcher
GB2040193A (en) * 1979-01-25 1980-08-28 Remote Control Cleaning Units Apparatus for treating a vertical surface
US4375740A (en) * 1978-05-25 1983-03-08 Jpd Manufacturing Limited Portable abrading cabinet device for recycling abrasive blasting system
US4395850A (en) * 1978-05-25 1983-08-02 Jpd Manufacturing Limited Adapter device for tools of an abrasive blasting system
US4731125A (en) * 1984-04-19 1988-03-15 Carr Lawrence S Media blast paint removal system
WO1988002299A1 (fr) * 1986-09-24 1988-04-07 Foseco International Limited Milieux abrasifs
US4773189A (en) * 1985-11-01 1988-09-27 Macmillan Gregory D Separation system for polymeric blast media
GB2207625A (en) * 1987-07-20 1989-02-08 Michael John Ryan Engraving by blasting with erosine material
EP0359000A1 (fr) * 1988-08-29 1990-03-21 Fukashi Urakami Dispositif de nettoyage
EP0365707A1 (fr) * 1988-10-28 1990-05-02 Helmut Fastje Dispositif de nettoyage pour façades et autres surfaces similaires

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB744466A (en) * 1952-05-15 1956-02-08 Vacu Blast Ltd Improvements in or relating to grit blasting apparatus
GB1195464A (en) * 1968-02-09 1970-06-17 Vacu Blast Ltd Improved Grit Blasting Apparatus
US4232487A (en) * 1978-05-25 1980-11-11 Knox Manufacturing Co. Abrading device
DE3629623A1 (de) * 1986-08-30 1988-03-03 Schlick Roto Jet Masch Einrichtung zum reinigen von oberflaechen grossflaechiger objekte mit einem bewegbaren strahlkorb

Patent Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR846841A (fr) * 1938-06-03 1939-09-26 Procédé de sablage perfectionné, dispositifs et appareillage pour son application
GB891446A (en) * 1960-06-18 1962-03-14 Harold Charles Zieber Automatic blasting control
US3427763A (en) * 1966-07-18 1969-02-18 Woma Maasberg Co Gmbh W Method of treating solid surfaces
US3583821A (en) * 1969-04-02 1971-06-08 Melvin H Shaub Chip catcher
US4395850A (en) * 1978-05-25 1983-08-02 Jpd Manufacturing Limited Adapter device for tools of an abrasive blasting system
US4375740A (en) * 1978-05-25 1983-03-08 Jpd Manufacturing Limited Portable abrading cabinet device for recycling abrasive blasting system
GB2040193A (en) * 1979-01-25 1980-08-28 Remote Control Cleaning Units Apparatus for treating a vertical surface
US4731125A (en) * 1984-04-19 1988-03-15 Carr Lawrence S Media blast paint removal system
US4773189A (en) * 1985-11-01 1988-09-27 Macmillan Gregory D Separation system for polymeric blast media
WO1988002299A1 (fr) * 1986-09-24 1988-04-07 Foseco International Limited Milieux abrasifs
GB2207625A (en) * 1987-07-20 1989-02-08 Michael John Ryan Engraving by blasting with erosine material
EP0359000A1 (fr) * 1988-08-29 1990-03-21 Fukashi Urakami Dispositif de nettoyage
EP0365707A1 (fr) * 1988-10-28 1990-05-02 Helmut Fastje Dispositif de nettoyage pour façades et autres surfaces similaires

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0631849A1 (fr) * 1993-07-01 1995-01-04 Brändle Metallbau AG Méthode et dispositif pour le nettoyage de surfaces
EP0640441A1 (fr) * 1993-08-31 1995-03-01 Holman, Harm Willem, Drs. Dispositif et procédé pour envelopper une construction à traiter
FR2802127A1 (fr) * 1999-12-09 2001-06-15 Biodecap Ind Nouveau plateau technique pour le decapage et/ou la peinture et les ateliers ainsi realises
WO2001041938A3 (fr) * 1999-12-09 2002-04-11 Biodecap Ind S A Nouveau plateau technique pour le decapage et/ou la peinture et les ateliers ainsi realises

Also Published As

Publication number Publication date
GB8908843D0 (en) 1989-06-07
GB2230486A (en) 1990-10-24
GB9008215D0 (en) 1990-06-13
EP0393918A3 (fr) 1990-12-19

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