An exhaust gas sampling device

Abstract

The invention provides a waste gas sampling device which comprises a first shell, an exhaust device, a drainage tube, a second shell and a detection device, wherein a first chamber, a second chamber and a third chamber are defined in the first shell; the first chamber and the second chamber are partitioned from each other; a first inlet and a first outlet are formed in the first chamber; the sizeof the first outlet is smaller than that of the first inlet; a second inlet and a second outlet are formed in the second chamber; the first outlet and the second outlet are respectively communicated with the third chamber to discharge air into the third chamber; the exhaust device is arranged inside the first chamber to form air flows; one end of the drainage tube is connected with the first shelland is communicated with the third chamber; a fourth chamber is defined by the second shell; the other end of the drainage tube is connected with the second shell and is communicated with the fourthchamber; the detection device is arranged inside the fourth chamber and is used for detecting waste gases. According to the waste gas sampling device provided by the embodiment of the invention, wastegas sampling can be rapidly achieved through the structure with the combination of the first chamber, the second chamber and the third chamber, the testing precision can be improved, and the energy can be saved.

Description

technical field [0001] The invention relates to the technical field of environmental protection detection, in particular to an exhaust gas sampling device. Background technique [0002] In industrial production and life, it is often necessary to discharge waste gas, which seriously endangers the environment and human health. In the process of governing and monitoring the environment, it is necessary to detect and control the waste gas. Exhaust gas sampling devices commonly used at present usually collect a certain amount of exhaust gas within a certain period of time, and then take out the exhaust gas in the exhaust gas sampling device for detection and analysis, which is time-consuming and laborious. However, during the sampling process of the exhaust gas sampling device integrating sampling and detection, the detection result will be affected due to the turbulence of the airflow, the sampling time will be long, and the detection accuracy will decrease. Contents of the in...

AI Technical Summary

Problems solved by technology

Exhaust gas sampling devices commonly used at present usually collect a certain amount of exhaust gas within a certain period of time, and then take out the exhaust gas in the exhaust gas sampling device for detection and analysis, which is time-consuming and laborious.

However, during the sampling process of the exhaust gas sampling device integrating sampling and detection, the detection result will be affected due to the turbulence of the airflow, the sampling time will be long, and the detection accuracy will decrease.

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