Laser settlement meter for measuring cleanliness of laboratory

The utility model belongs to the technical field of laboratory cleanliness detection, and particularly relates to a laser settlement meter used for measuring the laboratory cleanliness, the laboratory cleanliness has great influence on experimental results, and at present, some methods can be used for measuring the concentration of particulate matters in air, and the measurement result is poor. In order to solve the problem that in the prior art, the cleanliness of a laboratory cannot be accurately evaluated by an experimenter due to the fact that the laboratory cannot provide real-time, detailed and accurate data and cannot provide information about particle size distribution for the experimenter, the following scheme is provided that the laboratory cleanliness evaluation device comprises a placing frame, and a rotating structure is arranged in the placing frame; a first supporting rod is fixedly mounted above the rotating structure, an adjusting assembly is arranged in the first supporting rod, a bearing pl