Pneumatic detection head

The utility model provides a pneumatic detection head. Relating to the technical field of pneumatic measurement, the utility model relates to a pneumatic measuring head, and aims to solve the problemsthat a common pneumatic measuring head is easy to leak air during measurement due to the fact that the pneumatic measuring head needs to be pressurized, measurement data lose accuracy once air leakage occurs, and a to-be-measured pipe, especially precise instrument parts, is easy to damage due to the fact that a mode of retracting between the to-be-measured pipe and the measuring head is adopted.The device comprises a mounting base; a sealing head is slidably mounted at the lower end of the top of the mounting base. According to the utility model, as the inverted bowl-shaped clasping ring isfixedly arranged at the upper end of the inner cavity of the measuring head, and the air hole is formed in the measuring head in the middle of the clasping ring, the clasping ring can be in full contact with the port of the pi