Means for adding materials to a flowing stream

Details Means for adding materials to a flowing stream Means for adding materials to a flowing stream

1979-06-28

1982-10-05

Hampilos, Gus T.

Conveyors: fluid current

With means to control conveying fluid or movement of load in...

Control of load input or output

75 46, 75130R, 164 571, 164154, 266 81, 266 90, 266216, B22D 2720, B65G 5366

Patent

active

043526055

ABSTRACT:
Apparatus for adding materials, especially powdered or granular materials, to a flowing stream, e.g. of molten metal, comprises a nozzle for compressed gas, blowing the additive into the stream, and a detector that detects the stream and switches the flow of additive on and off according to whether the stream is present or absent. The detector is preferably of a non-contact type, sensing radiation from the stream, preferably visible light. The rate of flow of additive can be adjustable. There can be a fail-safe optical detector arrangement monitoring the flow of additive and signalling an alarm if the flow fails or if the nozzle is blocked. The timings of the start and end of the flow in relation to the detection of the metal stream are independently adjustable to ensure that the additive and metal coincide.

REFERENCES:
patent: 3224051 (1965-12-01), Brown, Jr. et al.
patent: 3260591 (1966-07-01), Brown, Jr. et al.
patent: 3511490 (1970-05-01), Brown, Jr.
patent: 3592363 (1971-07-01), Stout et al.
patent: 3682131 (1972-08-01), Algeri et al.
patent: 3702151 (1972-11-01), Blok et al.
patent: 3818971 (1974-06-01), Schutz
patent: 3995681 (1976-12-01), Schmid et al.

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