Rapid detection equipment for air pollution degree

An air pollution degree rapid detection device disclosed by the present invention comprises a detection device body, the top of the detection device body is provided with an air suction mechanism, the air suction mechanism comprises an air suction cylinder, the interior of the air suction cylinder is slidably connected with a piston, and the two sides of the piston are fixedly provided with an elliptical cone positioning block and a sliding positioning block respectively. A first rotating plate is rotationally connected to the interior of the air suction cylinder, and a fixed plate is fixedly connected to the interior of the air suction cylinder; by arranging the piston, the elliptical cone positioning block, the sliding positioning block, the first rotating plate, the fixed plate and other structural components, compared with the prior art, after air is extracted, the air inlet end of the air suction cylinder is automatically closed, so that external air is prevented from entering, a sealing cover does not n