SHAFT SEAL DEVICE

摘要

A lip-type seal shaft seal device equipped with a lip seal for sealing a rotary member and a stationary member concentrically disposed to the inside and outside in a radial direction, has a plurality of aeration-creating parts for creating aeration through relative rotational sliding of the lip seal and the rotary member, formed in separated fashion in the circumferential direction on the outside peripheral surface of the rotary member. The aeration-creating parts are configured from a plurality of fine grooves arranged in the circumferential direction, extending along the axial direction of the rotary member. The lip of the lip seal extends towards the outside atmosphere side, leaving a portion of the aeration-creating parts at the sealed fluid side in the axial direction.

主权项

1. A lip-type seal shaft seal device equipped with a lip seal for sealing a rotary member and a stationary member concentrically disposed to the inside and outside in a radial direction, the shaft seal device comprising
an aeration-creating part for creating aeration through relative rotational sliding of said lip seal and said rotary member is formed in the circumferential direction on an outside peripheral surface of said rotary member, said aeration-creating part being configured from a plurality of fine grooves arranged in the circumferential direction and extending along the axial direction of said rotary member; and the lip of said lip seal extending towards the outside atmosphere side, leaving a portion of said aeration-creating part at the sealed fluid side in the axial direction: