Device for connecting by chromatography column lug connection to pressure vessel

The utility model relates to the field of medical field, especially relate to a device for connecting by chromatography column lug connection to pressure vessel, communicating component's both ends connect respectively in the upper end of pressure vessel with the chromatography column. Communicating pipe I's intermediate position has the pump through threaded connection, communicating pipe I's left end has valve I through threaded connection, communicating pipe I's right -hand member passes through the upper end of welded connection at the chromatography column lid, communicating pipe II's left end head has valve II through threaded connection, communicating pipe II's right -hand member passes through the upper end of welded connection at the chromatography column lid, communicating pipe I's lower extreme has the prolonged downward exit tube through welded connection, the chromatography column passes through the lower extreme of threaded connection at the chromatography column lid, communicating pipe II and c