Determination device for content of non-methane total hydrocarbon and formaldehyde in ambient air and exhaust gas

Abstract

The invention discloses a device for measuring the content of non-methane total hydrocarbons and formaldehyde in ambient air and waste gas, which comprises a detection box, a filter box and an air suction box, the air suction box is located on the top of the filter box, and the filter box is located on the top of the detection box , one side of the suction box is provided with a suction port, the inner wall of the other side of the suction box is fixedly installed with a motor, and an isolation plate is fixedly installed in the suction box, the output shaft of the motor penetrates through the isolation plate and is fixedly connected with a rotating shaft, The inner wall of the bottom of the suction box is fixedly installed with a support frame, the support frame is rotatably connected with the rotating shaft, one end of the rotating shaft is fixedly connected with a fan blade, the bottom of the suction box is fixedly connected with a guide tube, and the guide tube extends to the filter box Inside, the filter box is provided with a filter bag. The invention realizes the filtering of the measuring device during gas sampling, removes solid impurities, ensures the accuracy of the measuring and protects the safety inside the measuring device, and at the same time facilitates the installation and replacement of filtering equipment, facilitates the use, and is easy to popularize.

Description

technical field [0001] The invention relates to the technical field of gas detection, in particular to a device for measuring the content of non-methane total hydrocarbons and formaldehyde in ambient air and waste gas. Background technique [0002] In the air, there are often harmful gases, such as formaldehyde, which affect people's health. Relevant departments are required to carry out air detection. The existing detection devices are very mature in terms of measurement technology, but there are certain defects in the gas sampling of the measurement device. Some small solid particles in the gas will enter together with the sampling. The inner wall of the measurement device will affect the measurement results and also cause damage to the device. Although the filter facilities are installed, there are deficiencies in the installation of the filter bags. The filter bags must be replaced frequently. The existing devices are more complicated and cumbersome in terms of replaceme...

AI Technical Summary

Problems solved by technology

Relevant departments are required to carry out air detection. The existing detection devices are very mature in terms of measurement technology, but there are certain defects in the gas sampling of the measurement device. Some small solid particles in the gas will enter together with the sampling. The inner wall of the measurement device will affect the measurement results and also cause damage to the device. Although the filter facilities are installed, there are deficiencies in the installation of the filter bags. The filter bags must be replaced frequently. The existing devices are more complicated and cumbersome in terms of replacement.

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