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Testing method for filtration performance of anti-smog face mask

A technology of filtration performance and testing method, which is applied in the direction of measuring devices, suspension and porous material analysis, scientific instruments, etc., and can solve the problems of no testing methods, testing equipment and testing conditions for anti-smog masks

Inactive Publication Date: 2017-03-29
SHANXI XINHUA CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are no regulations on the testing methods, testing equipment and testing conditions of anti-smog masks

Method used

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  • Testing method for filtration performance of anti-smog face mask

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Comparison scheme
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Embodiment Construction

[0072] Specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0073] A kind of test method of anti-smog mask filter performance, as follows:

[0074] (1), test equipment

[0075] Anti-smog mask filtration efficiency test system, such as figure 1 As shown, it includes the dust source, flow meter 1, fixture 2 and particle spectrometer 3; the dust source adjusts the flow rate through the airflow regulating valve 4, passes through the flow meter 1, passes through the anti-fog mask in the fixture 2, and then enters the particle spectrometer for detection.

[0076] (2), test equipment

[0077] 2.1. Fixture: area 50cm 2 , no air leakage;

[0078] 2.2. Flow meter: range 25~35L / min, precision grade 1;

[0079] 2.3 Particle spectrometer

[0080] (3) Test conditions

[0081] 3.1. Temperature: 16~30℃;

[0082] 3.2. Test flow: (30±5) L / min;

[0083] 3.3. Relative humidity: 30-80%;

[0084] 3.4. Dust sourc...

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Abstract

The invention discloses a testing method for the filtration performance of an anti-smog face mask. An aerosol particle dust generating material is put into a glass tube; when dust generating is conducted, a vacuum pump sucks air from a lower opening of the device, after the aerosol particle dust generating material is lit and an upper cover is fastened, clean air of which water and particulate matter are filtered out passes through six glass tubes, and the aerosol particle dust generating material is burnt to generate aerosol particles; the flow is controlled through a flow meter, a fixture and a particle spectrometer are input, determination on the particle quantity concentrations obtained before and after filtration is conducted, and the filtration efficiency of the anti-smog face mask is calculated. The testing method for the filtration performance of the anti-smog face mask is high in practicability.

Description

technical field [0001] The invention relates to the field of chemical industry, in particular to a method for detecting the filtering performance of an anti-smog mask. Background technique [0002] Today, as humans have made more and more achievements in the industrial field, with the update and development of various testing instruments, more and more people realize that there are particles (smog) in the air that are harmful to their health. [0003] In recent years, countries around the world have conducted research on the hazards of smog to human health, and have achieved many results. [0004] In the test method of the efficiency of anti-smog masks, the dust-generating material used in the test standards issued by the state is cigarettes, which is generated by a cigarette lighter, and only one cigarette can be lit at a time, which cannot meet the testing tasks of batches of products. [0005] In order to meet the requirements of timely completion of testing tasks when a...

Claims

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Application Information

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IPC IPC(8): G01N15/08
CPCG01N15/08G01N2015/084
Inventor 郭凤珍乔学明张振华姜春荣王勇黑春霞张改娥王晶李凯林王桃赵卯青
Owner SHANXI XINHUA CHEM
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