The invention relates to a diaphragm stacked type continuous cooling crystallizer which is provided with a
crystallization kettle, the
crystallization kettle comprises an upper kettle body, a lower kettle body and a middle kettle body, the middle kettle body comprises at least one connecting kettle, a feeding
pipe is arranged on the upper kettle body, a discharging
pipe is arranged on the lower kettle body, a driving motor is further arranged on the upper kettle body, and a driving shaft is arranged in the
crystallization kettle. Membrane frames are arranged in the upper kettle body, all the connecting kettles and the lower kettle body, all the membrane frames are installed on a driving shaft, jackets are arranged on the outer walls of the upper kettle body, all the connecting kettles and the lower kettle body, first liquid inlet pipes and first liquid outlet pipes are arranged on the jackets,
butt joint heat exchange flanges are arranged between the middle kettle body and the upper kettle body and between all the connecting kettles, and the
butt joint heat exchange flanges are connected with the middle kettle body. A heat exchange cavity is formed in the
butt joint heat exchange
flange, a second liquid inlet
pipe and a second liquid outlet pipe are arranged on the butt
joint heat exchange
flange, the upper end of the middle kettle body is in sealed connection with the upper kettle body, the connecting kettles are in sealed connection, and the middle kettle body is in sealed connection with the lower kettle body. The device is ingenious in structure, good in universality, convenient to use and practical.