GB881320A - A generator for the production of mechanical foam - Google Patents

A generator for the production of mechanical foam

Info

Publication number
GB881320A
GB881320A GB24255/60A GB2425560A GB881320A GB 881320 A GB881320 A GB 881320A GB 24255/60 A GB24255/60 A GB 24255/60A GB 2425560 A GB2425560 A GB 2425560A GB 881320 A GB881320 A GB 881320A
Authority
GB
United Kingdom
Prior art keywords
tube
pipe
foam
nozzle
jet
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
Application number
GB24255/60A
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 GB881320A publication Critical patent/GB881320A/en
Expired 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
    • B05B7/0018—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 devices for making foam
    • B05B7/005—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 devices for making foam wherein ambient air is aspirated by a liquid flow
    • B05B7/0056—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 devices for making foam wherein ambient air is aspirated by a liquid flow with disturbing means promoting mixing, e.g. balls, crowns
    • B05B7/0068—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 devices for making foam wherein ambient air is aspirated by a liquid flow with disturbing means promoting mixing, e.g. balls, crowns including a plurality of individual elements, e.g. needles, baffles, rotatable blades
    • 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
    • B05B7/0018—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 devices for making foam
    • B05B7/005—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 devices for making foam wherein ambient air is aspirated by a liquid flow
    • B05B7/0056—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 devices for making foam wherein ambient air is aspirated by a liquid flow with disturbing means promoting mixing, e.g. balls, crowns

Landscapes

  • Nozzles (AREA)

Abstract

881,320. Foam generators. ROTVAND, L. July 12, 1960 [April 7, 1960], No. 24255/60. Class 14(1). Mechanical foam is produced in a generator comprising a mixing tube 1 of substantially constant crosssection into which water under pressure from a tube 2 and emulsifying agent from a tube 5 are introduced by a centrally disposed injection nozzle 3, air suction ports 6 being provided in the tube 1 immediately downstream of the nozzle 3 and a small converging pipe 9 being mounted inside the tube 1 coaxially supported by radial blades 10 at a position downstream of the nozzle 3. The arrangement is such that the pipe 9 is positioned in a zone of the tube 1 in which the cross-section of the tube is entirely filled with foam formation and the pipe 9 speeds up the central part of the foam jet passing through the pipe 9 and slows down the peripheral part of the jet passing between the pipe 9 and tube 1. This increases the flow turbulence and improves the quality of the foam. Near the outlet of the tube 1 a second divergent. pipe 12 is centrally disposed to restore similar speeds to the central and peripheral parts of the foam jet before projection from the outlet 14. The injection nozzle 3 has a number of small inwardly directed points or projections 8 designed to produce atomisation of the outer surface layers of the jet issuing from the nozzle 3.
GB24255/60A 1960-04-07 1960-07-12 A generator for the production of mechanical foam Expired GB881320A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR881320X 1960-04-07

Publications (1)

Publication Number Publication Date
GB881320A true GB881320A (en) 1961-11-01

Family

ID=9370805

Family Applications (1)

Application Number Title Priority Date Filing Date
GB24255/60A Expired GB881320A (en) 1960-04-07 1960-07-12 A generator for the production of mechanical foam

Country Status (1)

Country Link
GB (1) GB881320A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0283399A1 (en) * 1987-03-19 1988-09-21 Entreprise Jean Lefebvre Apparatus and process for producing and spraying bituminous foam, use in surface dressing
EP0311227A2 (en) * 1987-10-09 1989-04-12 Cca, Inc. Foam fire fighting apparatus
WO1997026074A1 (en) * 1996-01-19 1997-07-24 S.C. Johnson Commercial Markets, Inc. Mix head eductor

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0283399A1 (en) * 1987-03-19 1988-09-21 Entreprise Jean Lefebvre Apparatus and process for producing and spraying bituminous foam, use in surface dressing
FR2612533A1 (en) * 1987-03-19 1988-09-23 Lefebvre Jean Ets DEVICE FOR SPREADING BITUMEN IN THE STATE OF FOAM, METHOD FOR IMPLEMENTING THE SAME, AND METHOD FOR PRODUCING SURFACE COATINGS
EP0311227A2 (en) * 1987-10-09 1989-04-12 Cca, Inc. Foam fire fighting apparatus
EP0311227A3 (en) * 1987-10-09 1990-03-21 Cca, Inc. Foam fire fighting apparatus
WO1997026074A1 (en) * 1996-01-19 1997-07-24 S.C. Johnson Commercial Markets, Inc. Mix head eductor
US5839474A (en) 1996-01-19 1998-11-24 Sc Johnson Commercial Markets, Inc. Mix head eductor
AU717792B2 (en) * 1996-01-19 2000-03-30 Diversey, Inc. Mix head eductor

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