This utility model relates to the technical field of positioning devices, and discloses a positioning device for detecting leaks in drainage
pipe networks. It includes a mounting sleeve with rollers evenly rotatably connected around its central perimeter. Sensors are evenly fixedly connected to the front side of the inner wall of the mounting sleeve. Connecting blocks are fixedly connected to the upper and lower sides of the front side of the mounting sleeve, and connecting ropes are fixedly connected to the front of the connecting blocks. A traction component is provided at the end of the connecting
rope away from the connecting blocks for traction of the mounting sleeve. A marking component is provided on the upper rear side of the inner wall of the mounting sleeve for marking the location of leaks in the drainage
pipe network. In this utility model, through the cooperation of structures such as the
throttle, connecting plate, connecting rod, connecting
rope, connecting block, mounting sleeve, sensor, metering valve, storage box, and
discharge pipe, the positioning device for detecting leaks in drainage pipe networks can automatically mark the location of leaks, improving the efficiency of
leak detection.