Sewage dirt submerged electric pump with cutting device

The utility model belongs to the technical field of submerged electric pumps, particularly relates to a sewage dirt submerged electric pump with a cutting device, and comprises a water pump and a motor. A water pump casing is provided with a water inlet and a water outlet, an impeller is installed on a rotor shaft of the motor, a water inlet of the impeller right faces to the water inlet of the water pump casing and is a hollow annular body, a cutting knife is installed at the outer end portion of the annular body of the water inlet of the impeller, a fixed knife capable of adjusting gaps is arranged at the water inlet of the water pump casing, and the cutting knife and the fixed knife are matched to form a device for cutting sewage dirt. The sewage dirt submerged electric pump with the cutting device has the advantages of being compact in structure, simple and reasonable, good in dirt cutting effect, capable of preventing the dirt from blocking pipelines and the like, and is suitable for sewage dirt submerged electric pumps in various types.