| 摘要 |
The purpose of the invention is to provide a shaft-sealing device, which does not leak at rest, operates with fluid lubrication during rotation including the initial period of rotation while preventing leakage, and is able to establish sealing and lubrication simultaneously. As a means for achieving the purpose, the invention is characterized in: multiple pumping sections being formed on the outer circumferential surface of a rotating member that are separated from each other in the circumferential direction, the pumping sections generating a pumping effect as a result of the relative rotational sliding of the lip seal and the rotating member; the multiple pumping sections being provided with in-drawing pumping sections that act in a direction that draws in the fluid that is being sealed and discharging pumping sections that act in a direction that expels the fluid that is being sealed; and the lip of the lip seal running toward the air side leaving a portion of the pumping sections, in the axial direction, on the side of the fluid that is being sealed. |
