| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a drainage pump for attaining improvement of discharge efficiency by making the pressure of return water from piping hard to interact on a suction port. <P>SOLUTION: A moving blade 200 is stored in a pump housing 100 of the drainage pump 1. The moving blade 200 includes: a mounting shaft 210 connected to an output shaft 32 of a motor 30; a large diameter blade 230 extended from the mounting shaft to a radial direction; a small diameter blade 220 continued to the lower edge part of the large diameter blade; a cylindrical wall member 260 connecting the outer peripheral part of the large diameter blade; and a disk member 240 connected to the large diameter blade and the lower edge part of the cylindrical wall member. The outer peripheral part of the disk member is near to the inner wall face of the pump housing, and the disk member has a flow passage hole 250 communicating with a lower side space and an upper side space of the moving blade. <P>COPYRIGHT: (C)2012,JPO&INPIT |
