The utility model discloses a multi-stage distiller, which relates to the technical field of distillers, and comprises a
distillation part which comprises an
acrylic acid hemisphere, a multi-stage aluminum hemisphere and a radiator which are arranged from top to bottom; the connecting part comprises a frame and a guide
pipe, the guide
pipe is connected to the frame, and the
distillation part is inserted into the middle of the frame through the radiator; the
water supply part comprises
water diversion cloth and a liquid inlet tank, and the frame is arranged on the liquid inlet tank. A plurality of aluminum hemispheres of which the diameters are gradually reduced are arranged, and a multi-stage
distillation structure is formed in a nested manner, so that
seawater is efficiently evaporated and condensed to obtain
fresh water; by the adoption of the technical scheme, all-directional lighting can be achieved,
solar energy can be fully absorbed at different sun illumination angles, meanwhile, the
evaporation area is increased through the spherical structure, and the
evaporation efficiency is improved. In addition, the nested design of the aluminum hemispheres can effectively reduce the heat loss of the side wall, and the overall energy efficiency of the
system is improved; by means of the design, the multi-stage
evaporation and
condensation process is optimized, and the
water production rate is effectively increased.