Combustible gas alarm apparatus with protection structure

The utility model belongs to the technical field of alarms, and particularly discloses a combustible gas alarm apparatus with a protective structure, which comprises an alarm apparatus body, a bottom plate, a connecting seat and a connecting disc, the connecting seat is arranged at the position close to the middle of the front surface of the bottom plate, and a connecting groove is formed in the middle of the front surface of the connecting seat. A plurality of limiting grooves are evenly formed in the outer side of the connecting groove in the front face of the connecting base, an alarm instrument body is arranged on the front face of the connecting groove, a connecting column is arranged on the back face of the alarm instrument body, a connecting disc is arranged on the back face of the connecting column, and limiting blocks matched with the limiting grooves are evenly arranged on the outer surface wall of the connecting disc. Arc-shaped clamping plates are symmetrically arranged on the outer sides of the c