Online dilution device for flow injection analyzer

The utility model discloses an on-line diluting device for a flow injection analyzer. The on-line diluting device comprises a control unit, a sample introduction unit, a uniform mixing unit, a two-channel multi-position switching valve and an infusion unit, according to the technical scheme provided by the utility model, the simultaneous continuous operation of sample introduction, proportional dilution and sample output is realized. The device realizes automatic online dilution of high-concentration samples, is large in dilution ratio range, high in accuracy, good in stability and convenient to debug, clean and maintain, can simultaneously work with a flow injection analyzer without interference, meets the requirement of rapid analysis, and has good popularization significance. 本实用新型的用于流动注射分析仪的在线稀释装置，包括控制单元、进样单元、混匀单元、两通道多位切换阀、输液单元。本实用新型的技术方案实现了进样、比例稀释、输出样品的同时连续运行。本实用新型实现了对高浓度样品的自动在线稀释，稀释比例范围大、精确度高且稳定性好，装置调试和清洁维护方便，可以与流动注射分析仪同时工作互不干扰，满足快速分析的要求，具有良好的推广意义。