Cooling circulation system of water suction pump motor

The utility model provides a cooling circulation system of a water suction pump motor. The cooling circulation system comprises a water suction pump, a flange, a frequency converter and a motor. The water suction pump and the motor are connected into a whole through a flange; the water suction pump comprises a pump body, and the pump body is provided with a main water outlet and a branch water outlet. A branch pipeline for communicating the main pipeline with the branch water outlet is arranged in the pump body; the branch water outlet is communicated with an inlet of a cooling flow channel ofa heat dissipation plate of the frequency converter through a flange; an outlet of the heat dissipation plate cooling flow channel of the frequency converter is communicated with a machine shell water cooling channel of the motor, and an outlet of the machine shell water cooling channel is communicated with a cooling backflow channel of the pump body through a flange. According to the cooling circulation system of the wa