Gas alarm detector

The utility model discloses a gas alarm detector which comprises a detector body, the outer wall of the detector body is fixedly communicated with a connecting pipe, one end of the connecting pipe is in threaded connection with a sealing plug, the other end of the connecting pipe is fixedly connected with an alarm, and the bottom of the detector body is fixedly communicated with a connector. The inner wall of the connector is in threaded connection with an air inlet pipe, the outer wall of the air inlet pipe is sleeved with a protective sleeve in a threaded mode, a silk screen is fixedly embedded in the outer wall of the protective sleeve, and an air inlet mechanism is arranged on the outer wall of the air inlet pipe. Large-particle dust is prevented from entering the detector body through the screen mesh, and the screen mesh can be cleaned and replaced by rotating the protective sleeve; by arranging the connector, the gas inlet pipe, the protective sleeve, the silk screen, the fixed pipe, the dustproof mesh,