发明申请
- 专利标题: SEAL RING
- 专利标题(中): 密封环
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申请号: US13391140申请日: 2009-08-18
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公开(公告)号: US20120146292A1公开(公告)日: 2012-06-14
- 发明人: Sadao Ikeda , Takashi Nagase
- 申请人: Sadao Ikeda , Takashi Nagase
- 申请人地址: JP Toyota-shi, Aichi
- 专利权人: TOYOTA JIDOSHA KABUSHIKI KAISHA
- 当前专利权人: TOYOTA JIDOSHA KABUSHIKI KAISHA
- 当前专利权人地址: JP Toyota-shi, Aichi
- 国际申请: PCT/JP2009/064442 WO 20090818
- 主分类号: F16J15/16
- IPC分类号: F16J15/16
摘要:
A seal ring is provided which allows the interior of a cylinder 1 of a screw extruder to be maintained at elevated temperature and elevated pressure, thus suppressing a variation in the pressure in the cylinder 1. In a special seal ring 300 attached to a screw shaft 7 in the cylinder of the screw extruder so as to be rotatable integrally with the screw shaft 7, thus restraining a material to be treated from being fed from upstream to downstream in the cylinder, a lead groove 317 extending in an axial direction of the shaft 7 is formed in an outer circumferential surface 316 opposing with a predetermined gap to an inner circumferential surface 1a of the cylinder. The lead groove 317 serves to disturb the flow of the material to be treated passing between the outer circumferential surface 316 and the inner wall surface 1a of the cylinder 1 to complex the flow. This stabilizes feeding resistance to suppress a variation in the pressure in the cylinder 1.
公开/授权文献
- US09028130B2 Seal ring 公开/授权日:2015-05-12