Fast-assembly type industrial harmful gas leakage detector

The utility model belongs to the technical field of gas detection, and particularly relates to a fast-assembly type industrial harmful gas leakage detector, which comprises a detector body and a sampling instrument body, an anti-falling pad is fixedly connected onto the detector body, a control button is fixedly connected onto the detector body, a display is fixedly connected onto the detector body, and the sampling instrument body is fixedly connected onto the display. The detector body is fixedly connected with an alarm sound, the detector body is fixedly connected with an indicating lamp, and the lower end of the detector body is in contact with an air plug cover mechanism. The purpose of assisting in fixing and stabilizing the whole structure can be achieved through insertion matching of the positioning block and the positioning groove, horizontal movement of the protruding piece can be achieved through threaded connection of the rotating rod and the protruding piece and driving of the rotating rod to rot