公开(公告)号：US06209879B1

公开(公告)日：2001-04-03

申请号：US09177489

申请日：1998-10-23

申请人： Koichi Mizunoya ,  Ken Yoshikawa ,  Satoshi Yamanaka ,  Tatuhiko Watanabe ,  Shinobu Munekata ,  Yasuhiro Ikeda

发明人： Koichi Mizunoya ,  Ken Yoshikawa ,  Satoshi Yamanaka ,  Tatuhiko Watanabe ,  Shinobu Munekata ,  Yasuhiro Ikeda

IPC分类号： F16J1532

CPC分类号： F16J15/3268 ,  F16J15/3232

摘要： A sealing apparatus has a metal ring having a cylindrical portion and an inward flange portion bending from the open-air side end of the cylindrical portion radially inward; a first sealing member formed integral with the metal ring, and having a first rubber-like sealing lip, and a flange-shaped interposed portion held between the inward flange position of the metal ring and the radial portion of the first sealing member. A second sealing member made of a resin material, extends from the inside-diameter end of the interposed portion axially toward the sealing liquid side, and is located in a gap between the open-air side surface of the first sealing lip and a rotary member, having the inner periphery thereof in slidable close contact with the surface of the rotary member, and regulates radial deformation of the first sealing lip. A screw pumping portion is provided to transport the liquid between the sliding surfaces to the sealing liquid side on rotation of the rotary member.

摘要翻译： 密封装置具有金属环，其具有从圆筒部的露天侧端径向向内弯曲的圆筒部和向内凸缘部， 与所述金属环一体形成的第一密封构件，具有第一橡胶状密封唇和保持在所述金属环的向内凸缘位置与所述第一密封构件的径向部分之间的凸缘状插入部。 由树脂材料制成的第二密封构件从插入部分的内径端向轴向朝向密封液侧延伸，并且位于第一密封唇的露天侧表面和旋转构件之间的间隙中 其内周与旋转体的表面滑动紧密接触，并调节第一密封唇的径向变形。 提供螺杆抽吸部分，用于在旋转构件旋转时将液体在滑动表面之间输送到密封液体侧。