Butterfly valve convenient to connect with pipeline

The utility model relates to the technical field of butterfly valves, and discloses a butterfly valve convenient to connect with a pipeline, which comprises a valve body, the top of the valve body is fixedly connected with a sleeve, the periphery of the front side of the valve body is fixedly connected with a connecting pipe I, and the front side of the inside of the connecting pipe I is slidably connected with a connecting pipeline. Two second connecting pipes are slidably connected to the outer side of the end, close to the first connecting pipe, of the connecting pipeline, second positioning seats are fixedly connected to the left side and the right side of the first connecting pipe correspondingly, first positioning seats are fixedly connected to the sides, away from each other, of the two second connecting pipes correspondingly, and first threaded rods are in threaded connection with the interiors of the two first positioning seats correspondingly. According to the utility model, the first connecting pip