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A microbial aerosol filter material detection device and using method thereof

A filter material and detection device technology, applied in the direction of measuring devices, suspension and porous material analysis, scientific instruments, etc., can solve the problems of surrounding pressure changes, affecting microbial results, and cannot accurately reflect microbial filtration efficiency, etc., to achieve constant flow , accurate test results and wide flow range

Inactive Publication Date: 2017-06-13
TONGJI UNIV
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  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the detection process, there is a common problem. When a certain flow rate passes through the filter material, it will cause changes in the surrounding pressure, which will seriously affect the sampling results of the microbial sampler, so that it cannot accurately reflect the filter material. Filtration efficiency
For this problem, the existing technical conditions and equipment do not have a good solution, although there are studies to overcome it by introducing clean air, as in 2008, the Chinese Patent Office announced that the authorized announcement number is CN 101299037 B invention patent, the name The method adopted for "Bioaerosol Filtration Efficiency Test Device and Method for Filtration or Isolation Materials", but the whole system is not in a closed space, which will seriously affect the results of microbial collection

Method used

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  • A microbial aerosol filter material detection device and using method thereof

Examples

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Embodiment 1

[0018] Embodiment 1: the mensuration of the microbial filtration efficiency to N95 respirator

[0019] as attached figure 1 As shown, it is divided into four systems: purification system, microbial aerosol preparation system, microbial collection system and detection flow control system. Wherein the purification system consists of a first valve 4-1, a sterilizing gas generator 6 and a purification bottle 16; Flow meter 2-2, first high efficiency filter 3-1, second high efficiency filter 3-2, second valve 4-2, third valve 4-3, microbial aerosol generator 5 and aerosol mixing chamber 7 Composition; the microbial collection system consists of a filter material fixture 10, a fixed knob switch 9, a first telescopic tube 15-1 and a second telescopic tube 15-2, a fourth flowmeter 2-4, a fifth flowmeter 2-5, a fourth Valve 4-4, fifth valve 4-5, six-stage impact microbial sampler 11-1 and 11-2, closed box 14-1 and 14-2, first pressure gauge 8-1, second pressure gauge 8 -2, the third...

Embodiment 2

[0025] Example 2: Determination of microbial filtration efficiency of two kinds of medical protective clothing on the market

[0026] as attached figure 1 As shown, it is divided into four systems: purification system, microbial aerosol preparation system, microbial collection system and detection flow control system. Wherein the purification system consists of a first valve 4-1, a sterilizing gas generator 6 and a purification bottle 16; Flow meter 2-2, first high efficiency filter 3-1, second high efficiency filter 3-2, second valve 4-2, third valve 4-3, microbial aerosol generator 5 and aerosol mixing chamber 7 Composition; the microbial collection system consists of a filter material fixture 10, a fixed knob switch 9, a first telescopic tube 15-1 and a second telescopic tube 15-2, a fourth flowmeter 2-4, a fifth flowmeter 2-5, a fourth Valve 4-4, fifth valve 4-5, first six-stage impact microbial sampler 11-1, second six-stage impact microbial sampler 11-2, first closed b...

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Abstract

The invention relates to a microbial aerosol filter material detection device and its use method. The invention is divided into four systems: a purification system, a microorganism preparation system, a microorganism collection system and a detection flow control system. The purification system consists of valves, disinfection gas generators and purification bottles; the microbial configuration system consists of fans, flow meters, high-efficiency filters, microbial aerosol generators and aerosol mixing chambers; the microbial collection system consists of filter material fixtures, fixed knobs, It is composed of expansion tube, flow meter, valve, six-stage impact microbial sampler, closed box, pressure gauge, and fan; the detection and detection flow control system is composed of fan, flow meter, stainless steel ventilation pipe and control panel. The invention is used to solve the technical obstacle that it is difficult to accurately and effectively collect and detect microorganisms due to pressure instability caused by air flow velocity when detecting microorganism filter materials.

Description

technical field [0001] The invention relates to the field of filter material detection, in particular to a microbial aerosol filter material detection device and a use method thereof. Background technique [0002] In recent years, the quality of atmospheric environment has been highly valued by people from all walks of life. Microorganisms such as viruses and bacteria in the atmosphere can easily enter the human body through the respiratory tract, seriously threatening human health. In 2010, an article titled "A Hundred Years of Influenza: Review and Enlightenment of Influenza Pandemics in the 20th Century" in the journal "Medicine and Society" showed that there were three outbreaks of influenza pandemics in the 20th century, and each influenza pandemic gave the global public a huge impact. Sanitation and economy have caused great damage. On the other hand, many medical workers deal with microorganisms such as viruses and bacteria every day, and have higher requirements fo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N15/08
Inventor 徐斌龚宇吴娅
Owner TONGJI UNIV