Auxiliary mechanism for filling chromatographic column

The utility model relates to an auxiliary mechanism for filling a chromatographic column, and relates to the field of industrial chromatography technology, the auxiliary mechanism comprises a top cover and a piston, the top cover is detachably and fixedly connected to a column barrel, the piston is arranged in the piston in a lifting manner, the top cover is erected above the piston, the top cover is fixedly connected with a feeding pipeline, and the liquid inlet end of the feeding pipeline is communicated with a raw material tank; a sealing plate is rotationally connected to the bottom of the piston, a first liquid inlet is formed in the piston in a penetrating mode, and a second liquid inlet is formed in the sealing plate in a penetrating mode; the system further comprises a control panel, a driving module, an infusion pump, a flow sensor and a signal processing module. The driving module and the infusion pump are in signal connection with the signal processing module, the infusion pump receives the first c