Lithium hexafluorophosphate crystallization device

The utility model relates to a lithium hexafluorophosphate crystallization device. The lithium hexafluorophosphate crystallization device comprises a pretreatment tank and a crystallization tank, a discharge port of the pretreatment tank is connected to a feed port of the crystallization tank, a first cooling jacket is arranged on the outer side of the crystallization tank, a stirring shaft is rotatably mounted in the crystallization tank, a first driving mechanism for driving the stirring shaft to rotate is arranged on the crystallization tank, and a second cooling jacket is arranged on the crystallization tank. A central shaft of the stirring shaft is a hollow shaft, a guide pipe is radially connected to the outer wall of the hollow shaft, a connecting rod is arranged in the guide pipe, a scraping strip is arranged in the crystallizing tank, the end part of the connecting rod is connected with the scraping strip, and a reset spring which enables the scraping strip and the inner wall of the crystallizing tan