Counterweight type Y-shaped confluence joint

The utility model relates to a counter weight type Y-shaped confluence joint which comprises a Y-shaped joint body, a main channel and a bypass channel are arranged in the Y-shaped joint body, the upper end of the side wall of the bypass channel is communicated with the main channel, a bypass pipe is installed at the lower end of the bypass channel, and a rotating shaft is rotatably installed at the bottom of the communicated section of the main channel and the bypass channel in the Y-shaped joint body. A right-angle converter valve composed of an interception baffle and a balance weight installation plate is installed on the rotating shaft, a first lug plate is arranged on one side of the balance weight installation plate, a balance weight block is arranged in the bypass pipe, a second lug plate is arranged at the top of the balance weight block, and a push-pull rod is hinged between the first lug plate and the second lug plate. The space between the interception baffle and the inner wall of the main channel