Large passage compression type well-cleaning packer

The utility model relates to a macroscopic path compression washable well packer which can be used for water injection string in the oil field. The utility model is characterized in that a male screw which is arranged in the lower end of an upper joint is connected with an upper guard sleeve, an inner pipe core and an outer pipe core are connected through the upper joint, wherein the place which lies in the lower end of the upper joint and between the upper guard sleeve and the outer pipe core is arranged with a compression spring and a washing piston, a female screw which lies in the lower end of the upper guard sleeve is arranged with a pressing section, a rubber sleeve and a caulking ring are arranged in the place which is outside the pipe core and in the lower part of the pressing section, the lower screw of the inner pipe core is connected with a lower joint, the outer wall of the lower joint is covered with a lower guard sleeve and the lower guard sleeve and the lower joint are fixed by a shear pin, and