Portable air analyzer

The utility model belongs to the technical field of analyzer equipment. The utility model relates to an analyzer, in particular to a portable air analyzer. Analyzer comprising an analyzer body, wherein a mounting hole is formed in the analyzer body; a mounting plate is arranged in the mounting hole; mounting grooves are formed in the top and the bottom of the mounting plate; a toothed plate is mounted in the mounting groove in a sliding manner; first clamping grooves are formed in the inner wall of the top and the inner wall of the bottom of the mounting hole correspondingly. And the sides, away from each other, of the two toothed plates extend into the corresponding first clamping grooves correspondingly, two rotating grooves are formed in one side of the mounting plate, rotating rods arerotatably mounted in the rotating grooves, gears are fixedly arranged on the rotating rods in a sleeving mode, and the gears are engaged with the corresponding toothed plates. The dust-proof analyzeris simple in structure an