Filtering device for waste water pipeline opening

The utility model discloses a filtering device for a waste water pipeline opening, which is characterized in that a threaded connection branch pipe is arranged at one end of a waste water pipe body far away from sewage discharge equipment and is in detachable threaded connection with the waste water pipe body, the other end of the threaded connection branch pipe is fixedly arranged on a filtering pipeline, and a sealing check ring is arranged at the position where the threaded connection branch pipe is matched and connected with the waste water pipe body. An inlet and an outlet are dug in the left inner side and the right inner side of the filtering pipeline respectively, an inner cavity is formed in the filtering pipeline, a spiral guide piece is installed on the left side of the inner cavity and close to the inlet, a cleaning assembly is fixedly installed in the middle of the inner cavity, and a mounting groove is formed in the right side of the inner cavity of the filtering pipeline. A cover plate is mount