an air sampler

Abstract

The invention relates to the technical field of environmental monitoring, and proposes an atmospheric sampler, comprising a base, the base is provided with a film-taking position, a sampling position and a film-receiving position, two film reservoirs are arranged on the base, two storage The film holders are respectively located at the film taking position and the film receiving position. The base is also provided with a conveying mechanism for conveying the film box between the film taking position, the sampling position and the film receiving position. The film box includes a box body and a box cover. The box body is closed; the base is also provided with a cover opening mechanism and a film collecting device, the cover opening mechanism is located at the film taking position, and is used to open the film box when the conveying mechanism transports the film box from the film taking position to the sampling position, and the film collecting device It is located at the film-retracting position, and is used to close and store the film box located at the film-retracting position into the film storage container of the film-retracting position. The above technical solution solves the problem that the membrane box of the air sampling equipment in the prior art is an open structure, which easily causes the filter membrane to be polluted and affects the results of sampling and analysis.

Description

technical field [0001] The invention relates to the technical field of environmental monitoring, in particular to an atmospheric sampler. Background technique [0002] Air sampler is an instrument or device for collecting air pollutants or polluted atmosphere. According to the collection object, it can be divided into gas (including vapor) sampler and particle sampler. When performing particulate sampling, a filter is generally used to collect suspended particulates. Existing air samplers for particulate matter sampling generally include two membrane reservoirs and a sampling station, where an unused filter membrane is placed in one of the membrane reservoirs, and the filter membrane is transported to the sampling station through a transmission mechanism. After sampling, the filter membrane is transported to another membrane reservoir for collection. The filter membrane is generally installed in a standard membrane box, and the filter membrane is transported by the transpo...

AI Technical Summary

Problems solved by technology

[0003] The invention proposes an atmospheric sampler, which solves the problem that the membrane box of the atmospheric sampling equipment in the prior art is an open structure, which easily causes the filter membrane to be polluted and affects the sampling and analysis results

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