Rotary buckle structure of first-aid transfer breathing machine

The utility model relates to a rotary buckle structure of a first-aid transfer respirator, which belongs to the technical field of accessories of the first-aid transfer respirator and comprises an INSP knob, an inspiration branch seat and an INSP joint, the INSP knob is sleeved with the inspiration branch seat, the INSP joint is arranged in the INSP knob and the inspiration branch seat, and a first limit structure is connected between the INSP knob and the INSP joint. A second limiting structure is connected between the air suction branch seat and the INSP connector; the first limiting structure comprises a sealing annular piece, a second annular butt-joint frame, an inner limiting bone position and an arc-shaped opening, the INSP rotary knob is connected with an INSP connector in a sleeved mode through the outer limiting bone position, the locking bone position and the inner limiting bone position, and after the INSP rotary knob is connected with an air suction branch seat, the INSP rotary knob can play a fa