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Title: Screw-fed pump system

Patent ·
OSTI ID:1164358

A pump system includes a pump that includes a first belt and a second belt that are spaced apart from each other to provide generally straight sides of a passage there between. There is an inlet at one end of the passage and an outlet at an opposite end of the passage, with a passage length that extends between the inlet and the outlet. The passage defines a gap distance in a width direction between the straight sides at the passage inlet. A hopper includes an interior space that terminates at a mouth at the passage inlet. At least one screw is located within the interior space of the hopper and includes a screw diameter in the width direction that is less than or equal to the gap distance.

Research Organization:
Aerojet Rocketdyne of DE, Inc., Canoga Park, CA (United States)
Sponsoring Organization:
USDOE
DOE Contract Number:
FC26-04NT42237
Assignee:
Aerojet Rocketdyne of DE, Inc. (Canoga Park, CA)
Patent Number(s):
8,893,878
Application Number:
13/171,904
OSTI ID:
1164358
Resource Relation:
Patent File Date: 2011 Jun 29
Country of Publication:
United States
Language:
English

References (6)

Apparatus for building up and repairing a refractory lining patent July 1977
Vertical conveyor for bulk goods patent August 1984
Rotary plate feeder patent July 2002
Linear tractor dry coal extrusion pump patent June 2008
High pressure dry coal slurry extrusion pump patent May 2010
Granular material conveyor patent-application October 2003

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