Impeller subassembly that sewage pump was used

The utility model discloses an impeller subassembly that sewage pump was used relates to liquid pump drainage equipment technical field. Including impeller and the impeller casing of intaking, install impeller is in the casing is intake to the impeller, the impeller includes impeller top cap (2), impeller hub (5) and the impeller blade more than two (3), and impeller hub (5) set up on the upper portion of impeller top cap (2), and impeller blade (3) set up the lower part in impeller top cap (2), impeller blade (3) for curved surface form, its height is the curve type by marginal centering to be increased, the impeller is intake the casing and is included casing (1) and the blade of intaking (9) more than two, and casing (1) is the round peviform of knowing how things stand and feel confident, and it has inlet opening (8) to open in the middle of its bottom surface, intake blade (9) for curved surface form, install in the interior bottom surface of casing (1), its height is the curve type by marginal centering to be reduced. Have and hit the rigid impurity of garrulous non-, be applicable to characteristics such as sewage extraction, use with ordinary water pump is supporting, both can be used to clean water extraction, also can be used to the sewage extraction, still be used for the extraction of fluid or other liquid.