Sampler
A sampler and port technology, applied in the field of analytical instruments, can solve the problems of uncontrollable accuracy and precision of sample analysis results, influence, cross-contamination, etc.
Active Publication Date: 2016-04-13
湖南华中宏泰检测评价有限公司
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Problems solved by technology
However, the existing sampling device does not have an online cleaning device. If the sampling device is contaminated, it can only be shut down and disassembled and then manually cleaned or replaced. Therefore, if the cleaning is not timely, the gas sample will remain, which will bring cross-contamination to the next experiment, resulting in The error of the analytical instrument has an uncontrollable impact on the accuracy and precision of the sample analysis results
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[0031] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the associated drawings. Preferred embodiments of the invention are shown in the accompanying drawings. However, the present invention can be embodied in many different forms and is not limited to the embodiments described herein. On the contrary, these embodiments are provided to make the understanding of the disclosure of the present invention more thorough and comprehensive.
[0032] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field of the invention. The terms used herein in the description of the present invention are for the purpose of describing specific embodiments only, and are not intended to limit the present invention. As used herein, the term "and / or" includes any and all combinations of one or more of ...
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The invention discloses a sample injector, which comprises a proportional valve, a quantitative ring, a lead-in valve, a lead-out valve and a cleaning valve, wherein the proportional valve comprises six ports, which sequentially are a first port, a second port, a third port, a fourth port, a fifth port and a sixth port; the quantitative ring comprises a first end and a second end; the first end is connected with the first port; the second end is connected with the fourth port; the second port, the third port and the cleaning valve all are connected with the lead-in valve; and the fifth port and the sixth port both are connected with the lead-out valve. After the sample is fed, subsequent analysis and treatment of the sample are carried out; a liquid or gas led in by the cleaning valve is used for cleaning a channel of the sample injector; uninterrupted sample analysis is carried out; the channel of the sample is cleaned in real time; the pollution to the next sample analysis caused by residues is removed; the sample analysis period is shortened; the sample analysis accuracy and repeatability are improved; and the work efficiency of sample analysis is improved.
Description
technical field [0001] The invention relates to the field of analytical instruments, in particular to a sample injector. Background technique [0002] In existing gas chromatographs, mass spectrometers and other gas sample analysis instruments, when analyzing gas samples, the device used for sample injection is usually a flat six-way valve. However, the existing sampling device does not have an online cleaning device. If the sampling device is contaminated, it can only be shut down and disassembled and then manually cleaned or replaced. Therefore, if the cleaning is not timely, the gas sample will remain, which will bring cross-contamination to the next experiment, resulting in The error of the analytical instrument has an uncontrollable impact on the accuracy and precision of the sample analysis results. Contents of the invention [0003] Based on this, it is necessary to provide a sample injector that realizes real-time online cleaning. [0004] A sampler comprising: ...
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IPC IPC(8): G01N35/00
Inventor 王华陈波庹苏行赵瑜
Owner 湖南华中宏泰检测评价有限公司