The utility model relates to the technical field of
seawater desalination, in particular to a solar
distillation device which comprises a floating seat, a condensation cover and a photo-thermal
evaporator. A through hole is formed in the floating seat, the photo-thermal
evaporator is movably sleeved with the through hole, a water collecting groove is formed in the periphery of the outer portion of the through hole, a condensation cover is connected to the water collecting groove in a sealed mode, and a drainage hole is formed in the water collecting groove and connected with a collecting
bottle; a conical support is arranged in the photo-thermal
evaporator, and a photo-thermal film is attached to the conical support; the condensation cover comprises a light-transmitting cover body, a pull ring is arranged on the light-transmitting cover body, and flow guide grooves are formed in the periphery of the inner side of the light-transmitting cover body. In the using process,
seawater capillary is improved through the photo-thermal film on the conical support, then the
seawater is evaporated under illumination and condensed on the inner side of the condensation cover, finally collection is conducted through the collection
bottle, and comparison of
evaporation performance of different photo-thermal films is achieved by comparing the collected water amount. The
seawater desalination device is simple in structure and convenient to use and maintain, and has important significance on research of
seawater desalination.