Cyclic gas sensor with self-adsorption function

Abstract

The invention provides a cyclic gas sensor with a self-adsorption function. The cyclic gas sensor comprises a support, a receiving lens, a brush ring, a T-shaped sliding block, a filtering screen, a positioning insertion rod, a suction fan, a wind concentrating shield, a positioning frame and an air inlet square pipe; an air outlet square pipe and an air guide square pipe are symmetrically communicated and supported on the circumferential outer wall of a transparent PVC smoke pipe; both the rear cover and the front cover are square in shape, and a lantern ring is arranged on the end face of the inner side of each of the rear cover and the front cover, and an infrared light source lamp and the receiving lens are separately arranged in the two lantern rings; a blanking cap used for tightening a plug bush for positioning via a spring is arranged at the opening flat pipe of each of the air inlet square pipe and the air outlet square pipe. According to the cyclic gas sensor with the self-adsorption function provided by the invention, due to the arrangement of the brush ring, the brush ring slides forward and backward along the air outlet square pipe and cleans dust deposited on the inner wall of the transparent PVC smoke pipe, and thus the interior of the PVC smoke pipe can be conveniently cleaned without dismounting the transparent PVC smoke pipe.

Description

technical field [0001] The invention belongs to the technical field of gas sensing and detection devices, and more specifically relates to a circulating gas sensor with self-adsorption function. Background technique [0002] A gas sensor is a converter that converts a certain gas volume fraction into a corresponding electrical signal. [0003] The probe adjusts the gas sample through the gas sensor, which usually includes filtering out impurities and interfering gases, drying or cooling the display part of the instrument, and a harmful gas concentration detection device equipped with a gas sensor is commonly used in the factory building, but due to the air in the detection device Internal circulation, and then it is easy to deposit dust inside, which affects the penetration of infrared light, and then causes deviations in test results. However, in order to clean the inner cavity of the current detection device, the device must be completely disassembled, and the cleaning ope...

AI Technical Summary

Problems solved by technology

[0005] In order to solve the above technical problems, the present invention provides a circulating gas sensor with a self-adsorption function to solve the problem that due to the air circulating inside the detection device, dust is easily deposited inside, which affects the penetration of infrared light and causes detection The deviation of the result, however, at present, if you want to clean the inner cavity of the detection device, you need to disassemble the device completely. The cleaning operation is extremely inconvenient, and the dust cleaning inside the empty suction channel also needs to be disassembled before it can be carried out, which is also inconvenient.

Images