Anti-blocking filtering device for municipal water supply and drainage

The utility model relates to the field of filtering devices, and discloses an anti-blocking filtering device for municipal water supply and drainage. According to the chip removal device, the chip removal rod and the first filter screen are arranged to be inclined angles so that water discharged into the shell through the water discharging pipe can directly enter the containing box through the first filter screen, the containing box is fixedly connected to one side of the shell, and one side of the chip removal rod penetrates through the inner wall of the shell to be arranged in the containing box; after rotating, the chip removal rod is matched with the first filter screen to discharge large-particle dirt into the containing box, the containing box facilitates storage of the large-particle dirt and facilitates cleaning of personnel, a water discharging pipe is arranged at the top of the outer wall of the shell, the personnel can discharge sewage into the shell through the water discharging pipe, the first mo