Municipal road water supply and drainage device

The invention relates to the technical field of municipal road water supply and drainage, in particular to a municipal road water supply and drainage device which comprises a first shell, a second shell and a third shell. A drainage port is formed in the bottom end of the first shell, a plurality of longitudinally-through first through grooves are evenly formed in the top end of the first shell, and a drain outlet is formed in the left end of the first shell; a filter plate is fixedly connected to the position, below the drain outlet, in the first shell, a water flowing opening is formed in the position, below the filter plate, of the left end of the first shell, the right end of the second shell is fixedly connected with the left end of the first shell, a cover plate is hinged to the topend of the second shell, and the right end of the cover plate is fixedly connected with the second shell through a first screw; and a water inlet is formed in the position, at the right end of the second shell, above the firs