Wadding seal structure

The wadding seal structure relates to the sealing of rotating shaft. The wadding seal structure includes wadding around the rotating shaft; cylindrical pressing sleeve installed inside the casing, embedded outside the wadding and with conic inner surface to limit the wadding; one pull rod installed on the outer baffle and with one end installed inside the cylindrical pressing sleeve and the one end provided with one nut; and one spring installed on the pull rod. The present invention has raised sealing performance and automatic compensation of radial wadding pressing force.