Kettle top sampling reflux circulation structure

The utility model discloses a kettle top sampling backflow circulation structure which comprises a sampling module and a backflow module, the sampling module comprises a three-way piece, one end of the three-way piece is connected with a sampling pipe, the sampling pipe is inserted into a reaction kettle, and the other end of the three-way piece is connected with a diaphragm pump through an elbow and used for providing power for sampling. The device has the advantages that one path of the three-way piece is connected with the diaphragm pump for sampling and analyzing, and the other path of the three-way piece is connected with the return pipe to send an analyzed solution sample back into the reaction kettle again, so that the sampled solution is not wasted; meanwhile, the fastest sample can be circularly detected. 本实用新型公开了一种釜顶取样回流循环结构，包括取样模块和回流模块，取样模块包括三通件，三通件的一端连接取样管，取样管插入反应釜内，三通件的另一端通过弯头连接隔膜泵，用于为取样提供动力，回流模块包括与三通件连接的回流管，回流管的另一端设有回流入口，本实用新型的优点是，通过三通件一路连接隔膜泵进行取样分析，一路连接回流管将分析后的溶液样本再次送回反应釜内，不会浪费取样的溶液，同时可循环检测到最新鲜