Water supply system of water mist nozzle

The water supply system comprises a control device and an energy supply device, the control device comprises a controller, a display screen, a pressure sensor and a pressure gauge, the controller is electrically connected with the display screen, the display screen is electrically connected with the pressure gauge, the controller is electrically connected with the pressure sensor, and the energy supply device comprises a high-pressure water tank and a high-pressure nitrogen cylinder. A first gas pipe is arranged between the high-pressure water tank and the high-pressure nitrogen cylinder, the high-pressure water tank and the high-pressure nitrogen cylinder are communicated through the first gas pipe, a water mist generator is arranged at the top of the high-pressure water tank, the bottom of the water mist generator is communicated with the high-pressure water tank, and the water mist generator is electrically connected with the pressure gauge. The high-pressure water tank is communicated with the high-pressu