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High-concentration rolling wet-wall biological aerosol sampling device

A bioaerosol and sampling device technology, applied in sampling devices and other directions, can solve the problems of prolonged sampling time, different concentrations at night and daytime, different concentrations in the morning and noon, and increased sampling time, so as to achieve enhanced gas-liquid contact. area, shortened sampling time, and improved sampling concentration

Pending Publication Date: 2022-04-15
昆明天龙经纬电子科技有限公司 +1
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Problems solved by technology

[0003] In the current wet-wall bioaerosol sampling device, due to the insufficient contact between the gas flow and the sampling liquid, in order to absorb more biological particles in the monitored gas, it is necessary to increase the amount of sampling liquid, but the detection of biological particles needs to reach a certain level. Concentration, the use of more sampling liquid will cause the concentration of biological particles in the sampling liquid to not reach the lower limit of detection and cannot be detected, and even the sampling liquid needs to be concentrated for detection, but it is difficult to avoid the occurrence of biological activity during the concentration process Therefore, this method of concentrating the sampling liquid cannot achieve the purpose of effectively monitoring biological particles in the air.
[0004] At present, there are also attempts to strengthen the contact between the airflow and the sampling liquid by changing the trajectory of the airflow entering the sampling cup. This method has improved to a certain extent, but the concentration of biological particles collected in the sampling liquid is still too low to be detected.
If you want to increase the concentration of the sampling solution, you need to prolong the sampling time, which not only increases the sampling time, but also affects the biological activity
And the concentration of some biological particles has a time limit. For example, the concentration at night is different from that during the day, and the concentration in the morning is different from that at noon. If it is necessary to accurately monitor the amount of biological particles in different time periods, the sampling time limit is required. The practice of sampling time is contrary to the requirement of sampling time limit

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  • High-concentration rolling wet-wall biological aerosol sampling device
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  • High-concentration rolling wet-wall biological aerosol sampling device

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Embodiment Construction

[0025] In order to make the purpose, technical solutions and beneficial effects of the present invention more clear, the preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, so as to facilitate the understanding of technical personnel.

[0026] Such as Figure 1-4 As shown, the high-concentration rolling wet-wall bioaerosol sampling device includes a sampling cup 1 , an air intake device 2 , a rotary drive device 3 , an air extraction device 4 , a control module 10 and a bracket 12 .

[0027] An air inlet 5 communicating with the sampling cup is opened on the air inlet device 2 . The right end of the suction device 4 is provided with an exhaust port 7 . An air flow passage 6 communicating with each other is provided among the sampling cup 1 , the air intake device 2 , the rotary drive device 3 and the air extraction device 4 . The sampled gas (air) enters the sampling cup 1 from the air inlet 5 and is...

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Abstract

The invention relates to a high-concentration rolling wet-wall biological aerosol sampling device which comprises a sampling cup, an air inlet device, a rotary driving device and an air extractor, the sampling cup is detachably and hermetically connected with the air inlet device; an air inlet communicated with the sampling cup is formed in the air inlet device; the air inlet device is hermetically connected with the left end of the rotary driving device; the air extractor is hermetically connected with the right end of the rotary driving device; air flow channels which are communicated with one another are arranged among the sampling cup, the air inlet device, the rotary driving device and the air extractor; according to the invention, the sampling cup rotates in the sampling process, and the sampling liquid forms a liquid film on the inner wall of the sampling cup, so that the contact area of air and the sampling liquid is enlarged, the use amount of the sampling liquid can be reduced, the sampling time is greatly shortened, the concentration of biological particles in the sampling liquid can be greatly improved, and the accuracy of a detection result is guaranteed.

Description

technical field [0001] The invention relates to an aerosol sampling device, in particular to a highly concentrated rolling wet wall biological aerosol sampling device. Background technique [0002] The current wet-wall aerosol sampling device puts the sampling liquid into the sampling cup so that the air flows through the sampling cup, the biological particles in the air are absorbed by the sampling liquid, and then the type of biological particles in the air environment is judged by detecting the sampling liquid and concentration. [0003] In the current wet-wall bioaerosol sampling device, due to the insufficient contact between the gas flow and the sampling liquid, in order to absorb more biological particles in the monitored gas, it is necessary to increase the amount of sampling liquid, but the detection of biological particles needs to reach a certain level. Concentration, the use of more sampling liquid will cause the concentration of biological particles in the samp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N1/24
CPCG01N1/24
Inventor 杜伟黄辉周朝涛刘玉明贺志文洪波余安雷屈晓虎杜继军樊建强
Owner 昆明天龙经纬电子科技有限公司
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