Paper feeding mechanism internally moving type double-station particulate matter monitoring device

Abstract

The invention provides a paper feeding mechanism internally moving type double-station particulate matter monitoring device. The device comprises a sampling mechanism, a detecting mechanism and a paper feeding mechanism, the sampling mechanism comprises a sampling tube, the upper end of the sampling tube is connected with a cutter, and the lower end of the sampling tube is connected with an enrichment nozzle; a measuring mechanism comprises a beta ray emitting source and a beta ray photomultiplier tube; the paper feeding mechanism is mounted on guide rails and driven by a moving driving mechanism to move left and right along the guide rails; the paper feeding mechanism comprises a fixing plate, a paper placing wheel, a paper collecting wheel and two guiding wheels are mounted on the fixingplate, and the paper collecting wheel is driven by a paper tape drive mechanism to rotate. According to the double-station particulate matter monitoring device, paper tapes move in one direction, andas long as the paper tapes between the paper collecting wheel and a paper conveying wheel have proper winding tightness, a paper pressing wheel is not needed to press the paper tapes. The movement ofthe paper tapes between sampling stations depends on the overall movement of the paper feeding mechanism, the movement is fast and accurate, paper is unlikely to break, and monitoring of the concentration of particulate matter can be continuously performed for a long time.

Description

technical field [0001] The invention belongs to the field of particulate matter detection equipment, and in particular relates to an integrally movable double-station particulate matter monitoring device of a paper-feeding mechanism. Background technique [0002] Among the monitoring methods of atmospheric particulate matter, the β-ray method has stable performance and relatively mature technology, and can automatically sample and detect for a long time. β-ray particle concentration monitoring instruments generally adopt the structure of particle enrichment and detection at the same station. The enrichment station of this structure is also the detection station, and the structure is relatively simple. In the same work station, particle sampling is very easy to contaminate the β-ray detector, resulting in data deviation, which cannot correctly represent the real situation of the environment. In response to this situation, some manufacturers have also developed an instrument ...

AI Technical Summary

Problems solved by technology

[0003] Aiming at the technical problem that the structure of the paper tape conveying mechanism of the existing particulate matter monitor is complex and easily leads to paper tape breakage, the present invention proposes a separation of enrichment and detection stations, which is low in cost and can ensure continuous paper tape β in long-term operation. The automatic monitoring device for ray particles is very necessary for the development of my country's environmental monitoring business, especially in high-concentration polluted environments.

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