Anti-overloading sewage pump

The anti-overload sewage pump comprises an installation frame, a motor is fixedly installed at one end of the outer surface of the upper end of the installation frame, an impeller box is fixedly installed at the other end of the outer surface of the upper end of the installation frame, and a transmission shaft is connected between the motor and the impeller box. A water outlet pipe is fixedly installed in the middle of the outer surface of the upper end of the impeller box, a smashing box is fixedly installed in the middle of the outer surface of one side of the impeller box, a water inlet pipe is fixedly installed on one side of the outer surface of the lower end of the smashing box, and an anti-blocking smashing assembly is arranged on one side of the smashing box. According to the anti-overloading sewage pump, the stepping motor operates to drive the cutting knife to rotate, the filter screen is prevented from being blocked by other sundries such as aquatic plants, the other sundries such as the aquatic pl