Solution impurity filtering device for chromatographic instrument

The utility model discloses a solution impurity filtering device for a chromatograph, which belongs to the technical field of chemical analysis and comprises a connector, a first connecting groove is arranged on the upper surface of the connector, filter paper is mounted on the inner wall of the first connecting groove, a second connecting groove is arranged on the bottom surface of the connector, and the filter paper is mounted on the inner wall of the second connecting groove. A gasket is fixedly installed on the inner wall of the second connecting groove, a flow guide nozzle is fixedly installed on the inner wall of the connector, a plurality of layers of filter paper are arranged on the inner bottom wall of the first connecting groove, a solution in the first container can be filtered, and a vacuum nozzle is arranged on the outer surface of the connector, so that the filtering effect is improved. The vacuum pump can be connected with the vacuum nozzle through the guide pipe, so that air in the second cont