AUTOMATIC AIR SAMPLER Russian patent published in 1994 - IPC

FIELD: air contamination control means. SUBSTANCE: sampler has a body with an intake hole, a cassette made in the form of a sector freely positioned on an axle with filters and projections located on a sector arc to match the filters. The sampler also has a spring-loaded projection stop, an axially spring-loaded funnel made with a thickness, the funnel has a drive and is connected to an evacuation line. Moreover, the sampler has a spring-loaded pusher mounted on the funnel thickness for limited rotation in a plane passing through the funnel axis, a spring-loaded plate with a stop, a cut and a wedge-shaped projection, the plate is fastened to an axle and is located in a plane passing through the funnel axis, a spring-loaded lever with a shelf to receive the cassette projection located perpendicularly to the plate plane. The lever has a pin engaged with the plate cut, the slope angle of the wedge-shaped projection side located closer to the axle is larger that of the other side. The funnel drive has a diaphragm which parts vacuum from the environment. The filter is fastened to the cassette by a bush with a flange. The filter is made in the form of a flanged bush on the side of the cassette, the bush outer diameter is less than the intake hole diameter, and the height of the flanged bush is less than the cassette thickness. EFFECT: improved structure. 3 dwg