Vacuum-stirring energy-saving evaporation device

The utility model relates to a vacuum-stirring energy-saving evaporation device. The vacuum-stirring energy-saving evaporation device comprises a stirring evaporator, of which the bottom is provided with a slag discharging pump, wherein the evaporator is connected with a charging pump through a plate-type heat exchanger I, a wire-mesh defoaming device is arranged at a top gas outlet of the evaporator, a heating jacket is arranged at the outer side of the evaporator, the evaporator is connected with a plate-type heat exchanger II, which is provided with a heating medium outlet and a heating medium inlet, and is further connected with a pressurizing blower, and a stirrer is arranged inside the evaporator; the pressurizing blower is arranged at a secondary steam outlet of the evaporator; an outlet of the pressurizing blower is connected with a secondary steam inlet of the heating jacket of the evaporator through a pipeline; a discharging port of the evaporator is connected with the slag discharging pump through