Solid-phase extraction instrument

A solid-phase extraction instrument belongs to the technical field of chromatographic separation and comprises an extraction part, a three-way electromagnetic valve is arranged in the extraction part, a door-shaped frame is mounted on the extraction part, a transverse lead screw is mounted at the upper end of the door-shaped frame, a vertical lead screw is mounted at the output end of the transverse lead screw, a pipetting mechanism is arranged on the vertical lead screw, and a plurality of placing mechanisms are further mounted on the extraction part. The extraction part is placed on the placing mechanism, the placing part is arranged on one side of the extraction part, and the liquid outlet part is arranged on the other side of the extraction part. Distilled water in the water tank can conveniently pass through the liquid inlet pipe, the interior of the extraction mechanism and the liquid discharge pipe through the three-way electromagnetic valve, the passing parts are cleaned, and impurities can be prevent