| 摘要 |
PURPOSE:To avert the damage of a sealing member at the time of device assembly by inserting the small-diameter part of a movable plug having a large- diameter part and the small-diameter part into a column body and providing a depressing means which makes sealing action in the large-diameter part. CONSTITUTION:The movable plug 3 inserted in the column body 1 has the large-diameter part 3a and the small-diameter part 3b connected to the outside of the body 1 and is formed with a small-diameter projecting part 3c in the peak part of the small-diameter part 3b. The projecting part 3c for fixing the movable plug 3 is fitted into the central hole of a retaining disk 13. A recess 3d fitted with a liquid dispersing plate 16 is provided at the bottom end face of the large-diameter part 3a of the movable plug 3 and a liquid passage path 15 penetrated from the center of the recess 3d to the front end of the projecting part 3c is formed. The disk 13 is moved relative to the flange 1b by tightening a fastening bolt 5, by which the movable plug 3 is moved downward. In addition, the packing material 2 in the column 1 is depressed by the bottom end of the movable plug 3, by which the sealing device is assembled without damaging the sealing member 6. |
