Dynamic crystallization device

The utility model relates to a dynamic crystallization device and belongs to the technical field of separation devices. The dynamic crystallization device comprises a crystallization kettle, a discharge port is arranged at the bottom of the crystallization kettle, the discharge port is connected with a discharge pipeline, the dynamic crystallization device further comprises an injection unit, and the injection unit comprises an injection pipeline; one end of the injection pipeline is used for being connected with an outlet of a crystal salt dissolving solution injection pump, and the other end of the injection pipeline is connected with the discharging pipeline so as to inject a crystal salt dissolving solution into the discharging opening when the discharging opening blocks the crystal salt; and a control valve which is opened when the crystal salt dissolving solution is sprayed and closed when the crystal salt dissolving solution is stopped being sprayed is arranged on the spraying pipeline. According to th