Method and apparatus for determining powder flow rate and transf

Details Method and apparatus for determining powder flow rate and transf Method and apparatus for determining powder flow rate and transf

1984-10-29

1986-05-06

Ruehl, Charles A.

Measuring and testing

Volume or rate of flow

Of selected fluid mixture component

15409, 73 28, 73432R, G01F 174, G01N 500

Patent

active

045863865

ABSTRACT:
A pneumatic powder collector for determining the transfer efficiency of a powder spray system comprises a funnel for directing powder into a sealed collection chamber. A vacuum is drawn on this chamber by an air flow amplifier having an air flow inlet open to the chamber and an exhaust open to atmosphere. Contained within the chamber there is an air permeable powder collection bag having an inlet open to the funnel so that air entrained powder drawn into the funnel is collected in the bag. The amount of vacuum drawn on the chamber is controlled by a pressure regulator through which high pressure air is supplied to the air flow amplifier so that the vacuum is just sufficient to pull all powder sprayed by a spray gun of the spray system into the chamber without increasing the flow of powder from the gun.

REFERENCES:
patent: Re25555 (1964-04-01), Foster
patent: 1078512 (1913-11-01), Mills
patent: 1950828 (1934-03-01), Thompson
patent: 2154773 (1939-04-01), Reed
patent: 2746078 (1956-05-01), Spurlin
patent: 3063223 (1962-11-01), Arbisi
patent: 3452751 (1969-07-01), Austin, Jr.
patent: 3741001 (1973-06-01), Fletcher
patent: 3743360 (1973-07-01), Brevko et al.
patent: 3971096 (1976-07-01), Renholt
patent: 4044423 (1977-08-01), Gaiardelli
patent: 4060001 (1977-11-01), Archerd

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