Apparatus for metering semi-flowable material

Details Apparatus for metering semi-flowable material Apparatus for metering semi-flowable material

1980-11-13

1983-07-12

Tollberg, Stanley H.

Dispensing

Agitator followed by discharge assistant and/or...

Three or more in series

222241, 366296, B01F 724

Patent

active

043925910

ABSTRACT:
A multistage volumetric feeder has a storage hopper for storing a mass of semi-flowable material, such as strand fiberglass, asbestos, or titanium dioxide. The material is bottom unloaded and passed through several stages of pressure reduction, aeration, and conditioning to loosen the material and place it in a state of substantially constant density. The conditioned material is further prevented from bridging and compacting as it is volumetrically delivered to a metering stage through a segregation stage. Because the semi-flowable material is placed in an uncompacted state of substantially constant density, the feeder is capable of delivering a precise mass of material over a wide range of flow rates.

REFERENCES:
patent: 2612298 (1952-09-01), Wearne
patent: 3085756 (1963-04-01), Danforth et al.
patent: 3448968 (1969-06-01), Young
patent: 3855368 (1974-12-01), Prochazka et al.
patent: 3904335 (1975-09-01), Watkins
patent: 3981417 (1976-09-01), Fassauer
patent: 4174054 (1979-11-01), Hubbard

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