Multi -effect water distillator

The utility model provides a multi -effect water distillator, including condenser, first evaporimeter, second evaporation, blow -down valve export, purification water entry, buffer tank, intake pump, first pneumatic diaphragm valve, the pneumatic diaphragm valve of second and controller, the evaporimeter connects gradually, and each second evaporimeter all is connected with the condenser, and condenser, blow -down valve export, purification water entry, buffer tank and intake pump all connect gradually through the pipeline, still is equipped with the temperature -detecting device who is connected with controller electricity, is equipped with first pneumatic diaphragm valve on the pipeline of blow -down valve export and purification water entry linkage, is equipped with second pneumatics diaphragm valve on the pipeline that the export of purification water and buffer tank are connected. Compared with the prior art, the utility model discloses a pneumatic diaphragm valve is controlled to the controller, has realized online self -sterilizer, has eliminated the risk of multiplying the bacterium in the pipeline, simultaneously still abundant utilizes injection water and purification water, and the cost is reduced has improved energy utilization and has rateed, in addition easy operation, easy maintenance.