Sewage pumps are a type of centrifugal sludge pump, available in various forms, such as submersible and dry types. The commonly used submersible model is the QW type submersible sewage pump. The typical dry sewage pumps include the W type horizontal sewage pump and the WL type vertical sewage pump. They are primarily used for conveying urban sewage, feces, or liquids containing fibers, paper屑, and other solid particles. The temperature of the conveyed medium is usually not greater than 80°C. Due to the presence of fibers that can tangle or clump in the conveyed medium, these pumps are prone to clogging. Once blocked, the pump may fail to operate normally and could even damage the motor, leading to inefficient waste removal. This poses a serious impact on urban life and environmental protection. Therefore, the anti-clogging ability and reliability are critical factors in determining the quality of sewage pumps.