Stirring polymerization vessel pneumatic clutch means

The utility model relates to a polymerization kettle stirring pneumatic clutch device which comprises a universal coupler linked with a polymerization kettle stirring shaft, a clutch connected with the universal coupler and a motor driving the clutch, wherein the motor is fixed in a motor stander; the clutch is placed on the motor stander and has an integrated structure; the universal coupler comprises an upper joint, a lower joint and a transmission device connected with the upper joint and the lower joint; the upper joint and the lower joint are concave; notches of the upper joint and the lower joint are opposite; fixed blocks are fixed in the notches and are respectively connected with an upper rotating head and a lower rotating head; the opposite end faces of the upper rotating head and the lower rotating head are respectively provided with a connection rotating shaft and a shaft hole; the connection rotating shaft is inserted into the shaft hole to connect the upper rotating head and the lower rotating head. The polymerization kettle stirring pneumatic clutch device can counteract an offset produced by overhaul through the universal coupler; the connection rotating shaft in the universal coupler reserves a stretching value which counteracts a settlement value generated by polymerization kettle feeding production, so that the safety and the stability of the clutch are guaranteed. The clutch is integrated, so that the upper part and the lower part of the clutch are kept coaxial, and the engagement of the clutch is guaranteed.