Solar seawater desalination device

The utility model provides a solar seawater desalination device. Solar energy field, the solar water heater comprises a heat collection mechanism, a steam collection assembly and a flushing assembly,the steam collection assembly comprises a water storage tank, a three-way connecting pipe and a condensation pipe, the condensation pipe is of a spiral structure with an excellent heat conduction effect, the heat exchange length between high-temperature steam and the external cold environment is increased, and the steam is effectively condensed and collected; in addition, a flushing assembly is arranged; the flushing assembly comprises a flushing fluid storage tank and a connecting guide pipe. During cleaning, the first control valve is opened, flushing fluid in the flushing fluid storage tankenters the evacuated collector tube through the connecting guide tube, after the flushing fluid and seawater in the evacuated collector tube are boiled for a period of time through solar illumination, the drain valve is opene