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WO1992002349A3 - The removal of material from surfaces - Google Patents

The removal of material from surfaces Download PDF

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Publication number
WO1992002349A3
WO1992002349A3 PCT/GB1991/001302 GB9101302W WO9202349A3 WO 1992002349 A3 WO1992002349 A3 WO 1992002349A3 GB 9101302 W GB9101302 W GB 9101302W WO 9202349 A3 WO9202349 A3 WO 9202349A3
Authority
WO
WIPO (PCT)
Prior art keywords
passage
particulate material
barrier means
gas
handpiece
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.)
Ceased
Application number
PCT/GB1991/001302
Other languages
French (fr)
Other versions
WO1992002349A2 (en
Inventor
Robert Sidney Jackson
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of WO1992002349A2 publication Critical patent/WO1992002349A2/en
Publication of WO1992002349A3 publication Critical patent/WO1992002349A3/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • 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
    • 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
    • B05B7/1472—Powder extracted from a powder container in a direction substantially opposite to gravity by a suction device dipped into the powder
    • 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
    • B05B7/1481—Spray pistols or apparatus for discharging particulate material
    • B05B7/1486—Spray pistols or apparatus for discharging particulate material for spraying particulate material in dry state
    • 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
    • B24C7/0046—Equipment for feeding abrasive material; Controlling the flowability, constitution, or other physical characteristics of abrasive blasts the abrasive material being fed in a gaseous carrier

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Cleaning In General (AREA)

Abstract

Apparatus for performing a process of cleaning surfaces of buildings comprises a chamber (11) partitioned by a pyramidal barrier means (33) into lower and upper zones (35a, 35b). Low velocity gas is impelled from a perforated body (15) to fluidize a bed of particulate material (13) particles of a certain energy escaping to a handpiece (21) by way of escape means (19). The bed is maintained in a steady state by the descent under gravity of particulate material (37) upheld by the barrier means (33), the material (37) and the material (13) forming a continuum at the peripheral communicating passage (41) of the barrier means. Gas at high velocity along passage (25) and six passages (95) in a swirl imparting member (79) entrains particles carried by the low velocity gas along passage (23) at the junction (27) of the passage (23) with the passages (95). As the particulate material attains the junction it is immediately accelerated by the high velocity gas to its discharge velocity from the handpiece.
PCT/GB1991/001302 1990-08-04 1991-07-31 The removal of material from surfaces Ceased WO1992002349A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB9017136A GB2250460A (en) 1990-08-04 1990-08-04 Blasting with particulate material
GB9017136.4 1990-08-04

Publications (2)

Publication Number Publication Date
WO1992002349A2 WO1992002349A2 (en) 1992-02-20
WO1992002349A3 true WO1992002349A3 (en) 1992-03-19

Family

ID=10680177

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB1991/001302 Ceased WO1992002349A2 (en) 1990-08-04 1991-07-31 The removal of material from surfaces

Country Status (3)

Country Link
EP (1) EP0497935A1 (en)
GB (1) GB2250460A (en)
WO (1) WO1992002349A2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8783208B2 (en) 2008-12-17 2014-07-22 Nordson Corporation Powder hopper with quiet zone, a combination of a powder hopper and a powder spray gun and a method of operating a powder hopper

Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1730195A (en) * 1928-06-29 1929-10-01 Sterling F Thompson Sand-blast device
US2176577A (en) * 1937-04-03 1939-10-17 Hydroblast Corp Sandblast device
GB619596A (en) * 1945-12-29 1949-03-11 Stanislas Morel Improvements in and relating to sand-blast guns
CH302642A (en) * 1952-07-23 1954-10-31 Rosset Paul Sandblasting process and gun for implementing this process.
US3073070A (en) * 1960-10-12 1963-01-15 William H Mead Abrasive blasting system
GB920488A (en) * 1960-11-09 1963-03-06 Vacu Blast Ltd Improved centrifugal wheel blasting machine
US3093418A (en) * 1960-09-22 1963-06-11 Allan M Doble Fluidising and feeding of finely divided materials
US3795348A (en) * 1971-08-05 1974-03-05 C Vertue Device for delivering particulate material
GB2021450A (en) * 1978-05-25 1979-12-05 Knox Mfg Co Abrading divice
GB2102315A (en) * 1981-07-22 1983-02-02 Impact Tech Apparatus for propelling abrasive medium
DE3232994A1 (en) * 1982-09-04 1984-03-08 Surface Export AG, 8876 Filzbach Centrifugal blasting machine
WO1988004220A1 (en) * 1986-12-03 1988-06-16 K.G. McCOLL & COMPANY LIMITED Method and apparatus for wet abrasive blasting

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB475316A (en) * 1936-07-23 1937-11-17 Stanislas Morel Improvements in and relating to sand blasting apparatus
GB907937A (en) * 1959-10-21 1962-10-10 Vacu Blast Ltd Fluidization and feeding of finely divided materials
GB1183342A (en) * 1967-01-05 1970-03-04 Roto Finish Ltd Improvements in Guns for Projecting Abrasive or Polishing Materials

Patent Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1730195A (en) * 1928-06-29 1929-10-01 Sterling F Thompson Sand-blast device
US2176577A (en) * 1937-04-03 1939-10-17 Hydroblast Corp Sandblast device
GB619596A (en) * 1945-12-29 1949-03-11 Stanislas Morel Improvements in and relating to sand-blast guns
CH302642A (en) * 1952-07-23 1954-10-31 Rosset Paul Sandblasting process and gun for implementing this process.
US3093418A (en) * 1960-09-22 1963-06-11 Allan M Doble Fluidising and feeding of finely divided materials
US3073070A (en) * 1960-10-12 1963-01-15 William H Mead Abrasive blasting system
GB920488A (en) * 1960-11-09 1963-03-06 Vacu Blast Ltd Improved centrifugal wheel blasting machine
US3795348A (en) * 1971-08-05 1974-03-05 C Vertue Device for delivering particulate material
GB2021450A (en) * 1978-05-25 1979-12-05 Knox Mfg Co Abrading divice
GB2102315A (en) * 1981-07-22 1983-02-02 Impact Tech Apparatus for propelling abrasive medium
DE3232994A1 (en) * 1982-09-04 1984-03-08 Surface Export AG, 8876 Filzbach Centrifugal blasting machine
WO1988004220A1 (en) * 1986-12-03 1988-06-16 K.G. McCOLL & COMPANY LIMITED Method and apparatus for wet abrasive blasting

Also Published As

Publication number Publication date
GB9017136D0 (en) 1990-09-19
WO1992002349A2 (en) 1992-02-20
GB2250460A (en) 1992-06-10
EP0497935A1 (en) 1992-08-12

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