Fluidized powder flowrate measurement method and device

Details Fluidized powder flowrate measurement method and device Fluidized powder flowrate measurement method and device

1992-08-07

1994-10-04

Goldstein, Herbert

Measuring and testing

By abrasion, milling, rubbing, or scuffing

7386104, G01F 176, G01N 356

Patent

active

053515200

ABSTRACT:
The flowrate of powder in an air-powder mixture circuit comprising a mixture drive area defined by a powder drive device comprising air injector means adapted to inject air in the direction in which the mixture is to be driven is measured by measuring the pressure difference across the drive area and the injected air flowrate and computing the powder flowrate as a function of these two variables. The degree of wear of a venturi tube which forms the drive area is calculated by integrating with respect to time two parameters representing air-powder mixture flow rate and the air flow rate.

REFERENCES:
patent: 2439723 (1948-04-01), Engdahl
patent: 4480947 (1984-11-01), Nagasaka
patent: 4941778 (1990-07-01), Lehmann

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