| 摘要 |
A screw press apparatus has frames, a screw shaft, an outside tube, a cylindrical screen, a screw blade, a supply pipe, and a cleaning pipe . Raw liquid is fed from the supply pipe via an opening of the screw shaft to the upstream region of the cylindrical space. The cleaning pipe ejects cleaning water onto the screen. Raw liquid fed from the opening to the upstream region is pressurized and carried towards the downstream region by the screw blade, and is separated into filtrate which flows through the fine holes out of the screen and a cake which moves in the cylindrical space, to be discharged from the downstream region. Sizes of the fine holes of the screen decrease gradually from the upstream region towards the downstream region.
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