Automatic water control machine special for pipe welding unit

The utility model relates to the technical field of automatic water control machines, in particular to an automatic water control machine special for a welded pipe unit. According to the technical scheme, the device comprises a bottom plate, stepping mechanisms are fixedly connected to the two ends of the bottom plate, a first rocker and a second rocker are rotationally connected to the inner side of each stepping mechanism, the first rocker is rotationally connected with a first rotary disc, the first rotary disc is fixedly connected with an elevator transmission shaft, and the elevator transmission shaft is fixedly connected with a first chain wheel. Through mutual cooperation of the first chain wheel, the second chain wheel and the variable frequency motor, the stepping mechanism can adjust the stepping speed according to the production speed of the line pipe, accurate positioning of products is guaranteed, through mutual cooperation of the high-pressure air gun nozzle and the stepping mechanism, the dryin