Semi-automatic continuous single particle sampling device

Abstract

The invention relates to a semi-automatic continuous single particle sampling device, and belongs to the technical fields of atmospheric environmental science and environmental monitoring. The device comprises a shell, an air intake pipe, and an air pump communicated with an air exhaust pipe. A funnel-shaped accelerating cavity, sampling collectors and an air flow export device are arranged inside the shell. The upper end of the funnel-shaped accelerating cavity forms a sealing connection with the air intake pipe. The lower end of the air flow export device forms a sealing connection with theair exhaust pipe. The number of the sampling collectors is multiple, and the sampling collectors are uniformly arranged on a turntable in an annular manner. The turntable rotates by adopting a support column as a center axis, such that the sampling collectors distributed on the turntable are alternately communicated and arranged on the positions between the funnel-shaped accelerating cavity and the air flow export device. With the present invention, a plurality of different samples can be continuously collected, the replace of the sampling film is not required in the sampling process, such that the continuous sampling can be performed conveniently, or the sampling at the selected time period can be performed conveniently, and the device is applicable for a plurality of sampling situations.

Description

technical field [0001] The invention relates to an atmospheric sampling device, in particular to a sampler capable of semi-automatic continuous sampling operation, belonging to the technical fields of atmospheric environmental science and environmental monitoring. Background technique [0002] At present, the commonly used atmospheric single particle sampler system includes three parts: sampling head, flow meter and suction pump. The air pump draws air into the collector sampling head, which then captures the aerosols in the airflow on the filter membrane. However, the traditional sampling device can only collect one sample at a time. When multiple samples need to be collected, it needs to stop halfway and replace the single-particle filter membrane in the sampling collector several times. The replacement of the single-particle filter membrane needs to be done indoors and is time-consuming. Longer, the existing single particle sampler cannot perform continuous sampling, esp...

AI Technical Summary

Problems solved by technology

However, the traditional sampling device can only collect one sample at a time. When multiple samples need to be collected, it needs to stop halfway and replace the single-particle filter membrane in the sampling collector several times. The replacement of the single-particle filter membrane needs to be done indoors and is time-consuming. Longer, the existing single particle sampler cannot perform continuous sampling, especially in the special environment of high-altitude operations such as aircraft cabins and manned airships, it is more difficult to replace the single particle filter membrane, which directly affects the subsequent sampling work

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