Middle excellent complex quick change mouth of a river of package stopper device

The utility model discloses a middle excellent complex quick change mouth of a river of package stopper device, including the stopper stick, the below of stopper stick is provided with the brick cup,inside one side of brick cup is provided with the extra long mouth of a river, and the inside opposite side of brick cup is provided with the mouth of a river, the below of going up the mouth of a river is provided with down the mouth of a river. The utility model discloses it has pneumatic cylinder and push rod to connect the design in centre package bottom side through the jar seat, the oppositeside design has the slide and the quick change mouth of a river, the top design that the mouth of a river under is inlayed to the slide has the slider, after casting a period, the internal diameter at the mouth of a river enlarges in the time of can not using down, then can start the hydraulic pressure jar, the operating position at the mouth of a river under present will move back at spare space's the lower mouth of a ri