Portable sampling device for atmospheric pollution degree detection

Abstract

The invention discloses a portable sampling device for atmospheric pollution degree detection, and relates to the technical field of environmental engineering. The device comprises an air suction assembly and a containing assembly. The air suction assembly comprises a main pipe, a left cover cap and a right cover cap are fixedly connected to the two sides of the main pipe through hoop rings respectively, a first filter plate, a connecting ring, a filter cylinder and a second filter plate are sequentially arranged in the air suction assembly from left to right, a containing assembly is fixedlyconnected to one side of the right cover cap through an air pipe and comprises an air bag, and supporting plates are fixedly connected to the top and the bottom of the inner wall of the air bag. Through arranging a filter cartridge and combining a first filter plate and a second filter plate, the first filter plate, the left cover cap, the second filter plate and the right cover cap form an independent cavity; the main pipe is combined, the air suction assembly forms three cavities, impurities in sucked air can be subjected to three-stage filtration before entering the air bag, the air suctionassembly is opened afterwards to take out three kinds of impurities with different particle sizes, the air bag is prevented from being blocked, and meanwhile the sampling diversity is conveniently improved.

Description

technical field [0001] The invention relates to the technical field of environmental engineering, in particular to a portable sampling device for detecting the degree of air pollution. Background technique [0002] Atmospheric sampling refers to the method of collecting pollutant samples or polluted air samples in the atmosphere. The first type of collection method is to pass a large amount of air through a liquid absorbent or a solid adsorbent to enrich the pollutants with low concentrations in the atmosphere as atmospheric pollutants. When the concentration of the component to be measured is high or the analysis method is very sensitive, the direct sampling method is adopted. Commonly used sampling containers include syringes, plastic bags and some fixed containers, etc. The measured concentration is the instantaneous concentration or short-term concentration of pollutants in the atmosphere. The average concentration, but the existing air sampling device also has the follo...

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Problems solved by technology

[0005] Aiming at the deficiencies of the prior art, the present invention provides a portable sampling device for air pollution level detection, which is capable of improving the diversity of sampling while avoiding clogging of the airbag, avoiding the difference in flow velocity between the inner and outer rings of the airflow, and ensuring the composition of the inhaled air There is no difference between the composition of the air and the composition of the air, which ensures the accuracy of sampling, etc., and solves the hidden danger of clogging the gas container components with more solid impurities. There is a certain difference between the composition of the inhaled air and the composition of the air, which affects the accuracy of sampling. sexual problems

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