Low-temperature efficient evaporation device

The invention discloses a low-temperature efficient evaporation device, and relates to the technical field of evaporation devices. The device comprises a vacuum tank body, the vacuum tank body comprises an evaporation cylinder, the bottom of the evaporation cylinder is fixedly communicated with a feeding pipe, the evaporation cylinder is connected with a mounting cylinder, the mounting cylinder is connected with a condensation cylinder communicated with the evaporation cylinder, and a discharging chamber used for receiving concentrated ethanol in the condensation cylinder is constructed in the mounting cylinder; the heat exchange part comprises a heating coil fixedly mounted at the bottom in the evaporation barrel and a cooling coil mounted at the top of the condensation barrel, and a refrigerant circulating pipe is communicated between the heating coil and the cooling coil; the preheating part is mounted at the bottom of the evaporation barrel and wraps the feeding pipe. Efficient evaporation of ethyl alcoho