Electromagnetic water pump with frequency conversion controller

The utility model relates to the technical field of electromagnetic water pumps, in particular to an electromagnetic water pump with a frequency conversion controller. The electromagnetic water pump comprises a pump body, an electromagnetic coil module installed outside the pump body and a magnetic core plunger installed in the pump body. The electromagnetic water pump with the frequency conversion controller is characterized by being further provided with a circuit board, the circuit board is provided with a current frequency conversion controller and a time-delay circuit, a coil of the electromagnetic coil module is connected with the frequency conversion controller, external current is input to the circuit board through an input end of the electromagnetic water pump and is output to the coil after passing through the time-delay circuit and the frequency conversion controller. During initial working time, water quantity of the electromagnetic water pump is large, enough water quantity can be provided in sho