Low speed particle concentrators
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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Oct 9, 1990
Grant Date -
N/A
app pub date -
Sep 28, 1989
filing date -
Sep 30, 1988
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A low speed decanting centrifuge for separating relatively large particulate material (e.g. yeast) from a feedstock is disclosed. The centrifuge is clamped to a container and the centrifuge housing is pressurized to, in turn, pressurize the container and force feedstock upwardly into the lower bowl of the centrifuge. A plurality of inverted frustoconical discs carry supernatant downwardly and inwardly for vertical transfer to a discharge chamber. Particulate matter is centrifugally discharged continuously between engageable surfaces of the lower bowl member and the upper bowl member. The invention provides for continuous recycle as the discharged particulate matter is returned under gravity to the container. The centrifuge is reasonably inexpensive to produce from lightweight materials since it is not subjected to the high stresses of high speed centrifuges. Also, by operating at low speeds, under 1000 r.p.m., there will be less cell compaction and damage to the particulate material than with high speed centrifuges.
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