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Atomized Blend Through Dual Media Spraying

IP.com Disclosure Number: IPCOM000075397D
Original Publication Date: 1971-Sep-01
Included in the Prior Art Database: 2005-Feb-24
Document File: 2 page(s) / 52K

Publishing Venue

IBM

Related People

Durham, PP: AUTHOR [+2]

Abstract

An air spray gun 10 is supplied with compressed air through line 11 which can be regulated or shut off by a valve 12. The gun 10 simultaneously entrains in the ejected air stream, powder from a reservoir 14 and liquid from reservoir 15.

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Atomized Blend Through Dual Media Spraying

An air spray gun 10 is supplied with compressed air through line 11 which can be regulated or shut off by a valve 12. The gun 10 simultaneously entrains in the ejected air stream, powder from a reservoir 14 and liquid from reservoir 15.

One branch 17 from compressed air input line 11 is directed to nozzle 18 which ejects a conical flow of air through venturi 19. A second branch passage 21 supplied with compressed air from line 11 connects with tube 22 to introduce compressed air into the powder reservoir 14, causing turbulence and the entrainment of powder particles in the conical expanding air stream ejected from nozzle 18.

Both first and second branch passages 17 and 21 have the flow therethrough regulated by valve means, not shown.

A third branch passage 23 receives compressed air which is regulated by valve 24. Air from passage 23 is emitted through a series of annularly disposed inclined jets 25 to become mixed with the air flow ejected from nozzle 18. Passage 23 leads through liquid reservoir 15 wherein liquid is entrained from the outlet of tube 27. Tube 27 forms the terminal portion of a passage 28 leading from the liquid reservoir, which has the flow therethrough regulated by a valve
29.

The ejected air stream includes both liquid and powdered solid media to permit dual-media spraying which overcomes objectional edge build-up that occurs during sequential spraying of liquid and powder.

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