Method and apparatus for dry particle analysis
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United States of America Patent
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Nov 26, 1996
Grant Date -
N/A
app pub date -
May 25, 1995
filing date -
May 25, 1995
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A dry particle analyzer includes a vibrating sieve cup drizzling particles downwardly with first, second, and third sheath air flows being provided to separate the particles from boundary walls and to form the drizzling particles into a columnated flow for optical analysis. The particles drop vertically as a drizzle with gravitational assistance from a bulk sample to an analysis chamber. Along the way to the analysis chamber, the particles are subjected to an interval of high air flow shear, and to high turbulence of the air flow to break up agglomerations of particles.
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