| 摘要 |
A columnar filtering apparatus is provided to need no separate cleaning means because sludge is not blocked, to adjust interval between the filter and the screw according to use of the filter and to select variously use. A columnar filtering apparatus comprises a filter(20) of a conical shape of which a top become broad and a lower part becomes narrow, a screw(10) of a conical shape installed inside the filter and a mobile tool(60) moving a screw to a shaft direction. A screw part(13) is positioned in one end of the screw and screws bolt in the screw part. |
