Mute hinge for doors and windows

The mute hinge comprises a left hinge body, a right hinge body and a middle shaft used for fixedly assembling the left hinge body and the right hinge body, a left installation position and a right installation position are correspondingly and integrally arranged in the middle of the installation end of the left hinge body and the two ends of the installation end of the right hinge body, and a silica gel air column is arranged in the left installation position. Bearings in centering bearing connection are arranged at the two ends of the left mounting position corresponding to the silica gel air columns; an oil immersion layer is arranged in the right mounting position, a silica gel ring is correspondingly arranged in the oil immersion layer, the mounting end of the middle shaft sequentially penetrates through the silica gel ring and the bearing and is arranged at the tail end of the right mounting position, and a fixing position is arranged at the tail end, corresponding to the middle shaft, of the right mount