Pneumatic stirring device for liquid packaging barrel

The utility model relates to a pneumatic stirring device for a liquid packaging barrel, and belongs to the technical field of industrial liquid material stirring devices. Comprising a fixing bolt detachably installed in a middle barrel opening of the three-opening barrel, a pneumatic motor is connected to the top of the fixing bolt, an air motor air inlet and an air motor air outlet are formed in the pneumatic motor, the pneumatic motor drives a hollow stirring shaft to rotate, and the bottom of the hollow stirring shaft extends into the three-opening barrel and is close to the bottom of the three-opening barrel; the bottom of the hollow stirring shaft is blocked, the top of the hollow stirring shaft penetrates through the pneumatic motor and then is connected with a rotary joint, the rotary joint is connected with an air inlet pipe communicated with an external air source, at least one circle of stirring blades which are opened during rotation and closed during static are installed on the hollow stirring sha