Fluid handling – With means for separating solid material from the fluid – Planar strainer normal to flow path
Patent
1978-08-17
1981-01-20
Nilson, Robert G.
Fluid handling
With means for separating solid material from the fluid
Planar strainer normal to flow path
55210, 55417, 137501, 13750546, G05D 701
Patent
active
042456690
ABSTRACT:
An improved self-actuated constant flow rate regulator system is described which can keep the rate of flow of fluid through a filter or other variable load constant within close limits. One application for this invention is for sampling the air for toxic dusts in factories where it is desirable to draw air through a collecting filter at a preset rate regardless of the amount of deposit on the filter and where a number of such filters may be connected to a central vacuum pump. The system comprises a differential pressure regulator and an adjustable metering orifice working in conjunction with each other. The regulator senses the pressure drop across the orifice and governs the flow rate accordingly. Details of the regulator valve and of the metering orifice are set forth which contribute to improved operating performance and manufacturing efficiency.
REFERENCES:
patent: 2776056 (1957-01-01), Douglas
patent: 2819774 (1958-01-01), Schmidt
patent: 2880753 (1959-04-01), Wilkins
patent: 3028876 (1962-04-01), Gratzmuller
patent: 3501899 (1970-03-01), Allen
patent: 3599658 (1971-08-01), Kruzan
Caplan Julian
Nilson Robert G.
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