Anti-blocking device for water supply and drainage

The utility model relates to the technical field of water supply and drainage, in particular to an anti-blocking device for water supply and drainage, which comprises a drainage pipeline, a water inlet arranged at one end of the drainage pipeline, a mounting cavity arranged in the middle of the drainage pipeline, and a water outlet pipe arranged at one end of the drainage pipeline far away from the water inlet. The device is characterized in that a filtering structure is arranged in the drainage pipeline; the pollution discharge structure is mounted on one side of the drainage pipeline; the adjusting assembly is rotationally connected to the interior of the drainage pipeline and is in transmission connection with the filtering structure; compared with the prior art, the drainage structure can treat the internal filtering structure in time, workers are prevented from entering the internal space of the drainage structure for treatment, the working intensity of the workers is reduced, and meanwhile certain risks