Defoaming stirrer for stirring reaction kettle

The utility model provides a defoaming stirrer for a stirring reaction kettle, belongs to the technical field of stirring reaction kettles, and solves the problem that a defoaming component on the existing defoaming stirrer cannot be quickly disassembled. The defoaming stirrer for the stirring reaction kettle comprises a stirring shaft, the top end and the bottom end of the stirring shaft are fixedly connected with a first coupler and a second coupler respectively, two protruding strips are fixedly connected to the stirring shaft, a sleeve seat is slidably connected to the stirring shaft, a sliding groove is formed in the inner circumference of the sleeve seat, and the sliding groove is slidably connected with the protruding strips. The sleeve seat is in threaded connection with two defoaming assemblies through the internal thread sleeve cover, and the periphery of the lower end of the sleeve seat is fixedly connected with an air bag ring. The height of the defoaming assembly can be automatically adjusted, an