Municipal public engineering sewer anti-blocking equipment

The utility model discloses municipal public engineering sewer anti-blocking equipment which comprises a connecting pipe body, an access door is rotatably connected to the surface of the connecting pipe body through a hinge, first guide grooves are symmetrically formed in the surface of the connecting pipe body, and second guide grooves corresponding to the first guide grooves are symmetrically formed in the surface of the access door. Two fixing rings are symmetrically connected to the outer side of the connecting pipe body in a sliding mode, two limiting blocks are symmetrically fixed to the positions, located on the two sides of the two fixing rings, of the surface of the connecting pipe body, and springs are fixedly connected between the limiting blocks and the fixing rings; guide strips in limiting sliding connection with the first guide groove and the second guide groove are arranged on the surfaces of the inner rings of the two fixing rings, the access door can be more simply, conveniently and quickly