Single-closing and opening rapid connector

Abstract

The invention relates to the technical field of connectors for gas sampling and detector sample introduction, in particular to a single-closing and opening rapid connector. The single-closing and opening rapid connector comprises a moving end and a fixed end, wherein the moving end comprises an upper connector, a lower connector, a connection disc, a rotation ball, an upper connection pipe and a lower connection pipe; the lower connector is provided with a lower ball base; the lower connection pipe is located on the bottom of the lower ball base and penetrates through the lower connector; the connection disc is fixed on the bottom of the lower connector; an upper ball base is arranged in the upper connector; an opening groove used for rotating the upper connection pipe is formed in one side of the upper connector; the upper connector is provided with inner threads matched with outer threads; the upper connector is rotatably fixed on the lower connector; the upper connection pipe extends out of the center of the opening groove; and the fixed end comprises a connection pipe, so that the upper connection pipe is inserted in in a sealed manner. The rapid connector is high in reliability and simple and convenient for use, and is especially suitable for large-scale sample acquisition and analysis.

Description

technical field [0001] The invention relates to the technical field of an adapter for gas sampling and detection instrument sampling, in particular to a single-enclosed quick connector. Background technique [0002] At present, the most convenient sampling method for the determination of volatile organic compounds in gas is the container capture method, which mainly collects gas samples through Summa tanks (stainless steel tanks that have been electropolished) or polymer bags (such as Tedlar bags). Both containers have good stability, ensure sample integrity, and provide good recoveries when analyzed, but in stationary source gas analysis, the Summa tank often exhibits poor results due to the high concentration of VOC gases On the low side, the precision is not high, and the cleaning of the tank after the measurement is cumbersome. [0003] The one-time use of the polymer air bag avoids the pollution caused by repeated use, ensures the accuracy and precision of the test res...

AI Technical Summary

Problems solved by technology

However, the structure of the polymer airbag product currently on the market is single, and it cannot be closely connected with the detection and analysis sampler like the Summa tank. It must be connected through a silicone tube, etc. The operation is cumbersome and the airtightness cannot be guaranteed, which affects the accuracy of the sample. At the same time, during sample collection, some product valves contain O-shaped rubber rings, which can interfere with gas samples. Secondly, most product valves need to be screwed when sampling, and the operation is cumbersome. One-handed operation cannot be achieved, and the efficiency is low.

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