| 摘要 |
<P>PROBLEM TO BE SOLVED: To make a screen easily and simply detachable with no need of dismantling a pipe. <P>SOLUTION: An inlet 4 and an outlet 5 are formed in the upper part of a sidewall of an outer casing 2, an inner cylinder 7 having an upper end port 7a communicating with the outlet 5 is set on the center axial line in the upper part in the inside of the outer casing 2, a spiral downward channel 9 communicating with the inlet 4 is formed around the inner cylinder 7 in a circular space between the inner cylinder 7 and the outer casing 2, the upper aperture part 12a of a cylindrical screen 12 is joined to a lower end port 7b of the inner cylinder 7 in a detachable manner, a taking out port 2a of the screen 12 is formed in the bottom face part of the outer casing 2, the taking out port 2a is closed with a bottom cover 3, and a drained wastewater discharge port 10 is formed in a lower end of the sidewall of the outer casing 2. <P>COPYRIGHT: (C)2012,JPO&INPIT |
