| 摘要 |
There is disclosed a submerged pump used, for example, in a duplex treating tank for sewage. The submerged pump includes a pump casing (3) including an inlet portion (9), a pump chamber (4) and a discharge portion (5), a motor means (2) for driving and rotating an impeller provided in the pump chamber (4); the motor means being integrally secured to the pump casing (3), wherein the pump casing (3) comprises at least two subcasings (3a,3b) assembled together, at least one of the subcasings (3a) having a projection (11) defining a narrowed passage (12) portion. <IMAGE> |
