| 摘要 |
A pump assembly for dough-like material wherein a roll feeder (12) delivers the material, under pressure, to a progressing cavity pump (14). In that process, the roll feeder also de-airs the dough. In preferred embodiments, t he progressing cavity pump may be interconnected to the roll feeder by a screw feeder (13). The pump assembly may be employed to pump material from place t o place, or alternatively, to extrude a pumped material, including delivering the pump material to an extruder (22).
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