Pump for particulate solids

Details Pump for particulate solids Pump for particulate solids

1992-11-24

1994-10-18

Mackey, James

Plastic article or earthenware shaping or treating: apparatus

With separate and distinct upstream agitating or kneading means

Mixing roll type

100156, 141 73, 141 79, 198642, 198723, 406 52, 406 99, 406102, 415 90, 425205, 4253812, 425449, B29C 3100

Patent

active

053562801

ABSTRACT:
A rotary channel pump apparatus for compressing solids that have an initial bulk density which is substantially lower than their structural density; the apparatus comprises a flow channel having an inlet and an outlet and includes: (i) an annular drag flow channel segment (L1) formed between a stationary outer wall member and a rotating circular inner wall member; and (ii) a straight channel segment (L2) formed between a first planar and stationary wall portion and a second planar and stationary wall portion; no axial cross-section of the flow channel between the inlet and the outlet is smaller than the axial cross-section at the inlet; a rotary feeder is connected to the flow channel near the inlet thereof for precompacting the particulate solid which is then passed through the flow channel to substantially increase the bulk density and to avoid melting and/or thermal degradation of the particulate solid when passing through the flow channel.

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patent: 5051041 (1991-09-01), Firth
patent: 5200204 (1993-04-01), Horton et al.
patent: 5223199 (1993-06-01), Ponzielli

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