Pipeline grating for sewage treatment

The utility model discloses a pipeline grid for sewage treatment, which comprises a square pipeline and a square frame, the square frame is embedded in the square pipeline, one side of the square frame is provided with a U-shaped plate, the U-shaped plate is internally provided with a cavity, a fastening screw is embedded in the cavity, the top of the fastening screw is fixedly connected with a handle nut, and the handle nut is fixedly connected with the square frame. And the bottom of the fastening screw rod is sleeved with a sleeve. According to the pipeline grating for sewage treatment, the U-shaped plate is arranged outside the square frame, the pipeline grating is assembled firstly, then the assembled square frame is embedded in a connector of a square pipeline, fastening screws in the U-shaped plate are screwed, rubber pads at the bottom of the U-shaped plate and the inner wall of the square pipeline are extruded, the number of the fastening screws is four, and the U-shaped plate and the square pipeline