Evaporation device for glycerol purification

The utility model discloses an evaporation device for glycerol purification, which relates to the technical field of glycerol processing and comprises a heating cylinder, an inner cylinder, a rotating shaft, a first filter disc, a second filter disc and a condenser pipe, the inner cylinder is fixedly arranged in the heating cylinder in a sleeving manner; the rotating shaft rotates in the inner cylinder and movably penetrates through the first filter disc; the second filter disc is fixedly arranged outside the rotating shaft in a sleeving manner, and the second filter disc is positioned above the first filter disc; and the tail end of the condensation pipe is inserted into the inner cylinder. The first filter disc and the second filter disc are matched with each other, glycerol to be purified passes through the first filter disc and the second filter disc in sequence, the glycerol is filtered for multiple times, insoluble impurities in the glycerol are effectively removed, meanwhile, the glycerol to be purifie