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 submersible sewage pump, while the common dry sewage pumps include the W horizontal sewage pump and the WL vertical sewage pump. They are primarily used for conveying urban sewage, feces, or liquids containing fibers, paper shreds, and other solid particles. The temperature of the conveyed medium is usually not greater than 80°C. Due to the presence of fibrous materials that are prone to entanglement or clumping, the pump's flow channel is susceptible to clogging. Once clogged, the pump may fail to operate properly, potentially damaging the motor and causing inefficient waste disposal. This can have a severe impact on urban life and environmental protection. Therefore, anti-clogging and reliability are crucial factors in determining the quality of sewage pumps.