Three-way pneumatic control valve

The utility model relates to the technical field of pneumatic control valves, and discloses a three-way pneumatic control valve which comprises a three-way pipe body, the upper portion of the three-way pipe body is fixedly connected with a control valve port, the upper portion of the control valve port is provided with a mounting flange, and the upper portion of the mounting flange is fixedly connected with a rotating shaft outer sleeve. A transmission shaft is slidably connected into the rotating shaft outer sleeve, a driven gear is installed on the upper portion of the transmission shaft in an interference mode, the driven gear is meshed with rack teeth, and the rack teeth are arranged in the rack body. The three-way valve element is arranged in the three-way pipe body and connected through the bolt of the installation flange, the three-way valve element is convenient to assemble and disassemble, time is saved, working intensity is reduced, the pneumatic valve body is controlled through the controller, then