Stirring device of ester exchange reaction kettle

The utility model discloses a stirring device of an ester exchange reaction kettle. The reaction kettle comprises a kettle body, wherein a feeding hole and a discharging hole are respectively formed in the top and the bottom of the kettle body; a driving motor is arranged at the top of the kettle body; an output shaft of the driving motor is arranged downwards and is in transmission connection with a stirring shaft extending into the kettle body; stirring assemblies are respectively arranged at the upper part and the lower part of the stirring shaft; the middle outer wall of the stirring shaftis provided with external threads and is in threaded connection with a connecting sleeve; the outer wall of the connecting sleeve is fixedly connected with a connecting ring through a plurality of connecting rods; limiting blocks are fixedly connected to the outer walls of the two sides of the connecting ring. Limiting grooves matched with the limiting blocks are formed in the inner walls of thetwo sides of the kettle bo