Three-cavity T tube

The utility model discloses a three-cavity T tube. The three-cavity T tube comprises a three-cavity T tube body, a rotating shaft is vertically and rotationally connected into the three-cavity T pipebody. An inner cavity of the horizontal part of the three-cavity T pipe body is divided into a drainage chamber and a backflow chamber by the rotating shaft; a drainage tube is fixedly arranged on theinner wall of the drainage chamber; the vertical part of the drainage tube is fixedly connected to the inner wall of one side of the vertical part of the three-cavity T tube body; the tail end of theconnecting pipe penetrates through the side wall of one end of the vertical part of the three-cavity T-shaped pipe body and extends outwards; and a backflow pipe is fixedly arranged on the side wallof the backflow chamber, the vertical part of the backflow pipe is fixedly connected to the inner wall of the other side of the vertical part of the three-cavity T-shaped pipe body, the tail end of the backflow pipe penetrates t