Water purifying device for treating oil-water mixed waste liquid in oil and gas field

A water purifying device for treating oil-water mixed waste liquid in an oil and gas field is characterized in that a preheater is connected with a sprayer through a pipeline, a motor is connected with a cleaning brush, and a solar panel supplies power to the motor; the filter screen is arranged at the lower part of the evaporation tank; the finned heat exchanger is connected with the tubular heat exchanger through a pipeline, the compressor, the condenser, the expansion valve and the solar panel evaporator are located on the pipeline connected between the finned heat exchanger and the tubular heat exchanger, and the controller is connected with the electromagnetic valve I, the temperature sensor, the pressure sensor, the liquid level sensor and the electromagnetic valve II through signal lines. Recycling is achieved through condensation and heat release of secondary steam generated by oil-water mixed material water, the heat exchange efficiency can be effectively guaranteed by cleaning the heat exchange fins