FR2370518A1 - Powdery material pneumatic projection system - has concentric nozzle forming annular gas envelope around material jet - Google Patents

Powdery material pneumatic projection system - has concentric nozzle forming annular gas envelope around material jet

Info

Publication number
FR2370518A1
FR2370518A1 FR7634322A FR7634322A FR2370518A1 FR 2370518 A1 FR2370518 A1 FR 2370518A1 FR 7634322 A FR7634322 A FR 7634322A FR 7634322 A FR7634322 A FR 7634322A FR 2370518 A1 FR2370518 A1 FR 2370518A1
Authority
FR
France
Prior art keywords
projection system
nozzle forming
annular gas
jet
forming annular
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.)
Granted
Application number
FR7634322A
Other languages
French (fr)
Other versions
FR2370518B1 (en
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.)
CAMIVA
Original Assignee
CAMIVA
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 CAMIVA filed Critical CAMIVA
Priority to FR7634322A priority Critical patent/FR2370518A1/en
Publication of FR2370518A1 publication Critical patent/FR2370518A1/en
Application granted granted Critical
Publication of FR2370518B1 publication Critical patent/FR2370518B1/fr
Granted 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
    • B05B7/1481—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
    • 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
    • B05B7/02—Spray pistols; Apparatus for discharge
    • B05B7/06—Spray pistols; Apparatus for discharge with at least one outlet orifice surrounding another approximately in the same plane
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
    • B24C5/00—Devices or accessories for generating abrasive blasts
    • B24C5/02—Blast guns, e.g. for generating high velocity abrasive fluid jets for cutting materials

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Nozzles (AREA)

Abstract

The system improves a pneumatic projection of finely-divided or powdery material. Concentric to the discharge nozzle for the mixture of material and transporting gas is a second nozzle supplied with compressed gas. This forms an annular envelope of gas round the mixture concerned. The nozzles may be supplied by the same source of compressed gas or by different sources. The design reduces energy loss caused by the trumper effect as the jet of material entrains the ambient air with it, thus increasing the range and reducing particle dispersion.
FR7634322A 1976-11-15 1976-11-15 Powdery material pneumatic projection system - has concentric nozzle forming annular gas envelope around material jet Granted FR2370518A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7634322A FR2370518A1 (en) 1976-11-15 1976-11-15 Powdery material pneumatic projection system - has concentric nozzle forming annular gas envelope around material jet

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7634322A FR2370518A1 (en) 1976-11-15 1976-11-15 Powdery material pneumatic projection system - has concentric nozzle forming annular gas envelope around material jet

Publications (2)

Publication Number Publication Date
FR2370518A1 true FR2370518A1 (en) 1978-06-09
FR2370518B1 FR2370518B1 (en) 1982-04-02

Family

ID=9179899

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7634322A Granted FR2370518A1 (en) 1976-11-15 1976-11-15 Powdery material pneumatic projection system - has concentric nozzle forming annular gas envelope around material jet

Country Status (1)

Country Link
FR (1) FR2370518A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2694214A1 (en) * 1992-07-28 1994-02-04 Forchungsanstalt Luft Deutsche Device for coating surfaces with a powder, and powder pouring head fitted to this device.

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2694214A1 (en) * 1992-07-28 1994-02-04 Forchungsanstalt Luft Deutsche Device for coating surfaces with a powder, and powder pouring head fitted to this device.

Also Published As

Publication number Publication date
FR2370518B1 (en) 1982-04-02

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Legal Events

Date Code Title Description
ST Notification of lapse