Four-eccentric butterfly valve and sealing ring

Four-eccentric butterfly valve and sealing ring

  • CN 103,759,025 B
  • Filed: 10/08/2013
  • Issued: 02/08/2017
  • Est. Priority Date: 10/08/2013
  • Status: Active Grant
First Claim
Patent Images

1. a kind of four eccentric-butterfly-valves, including valve rod, dish plate, valve body, valve seat and sealing ring, described valve body has a valve passage,The outside of described valve passage is provided with valve seat, and described dish plate is arranged in valve passage, and described valve rod is connected with dish plate, is used forDrive dish plate rotate it is characterised in that being provided with sealing ring on described dish plate, described sealing ring in valve closing with valve seat itBetween form sealing surface, the axial line of described valve rod and sealing surface do not coincide, the axial line of described valve rod and described valve passageCentrage non-intersect;

  • The outer surface of described sealing ring is matched with the inner surface of valve seat, and for a spatially elliptic coneA part for outer surface;

    The section of described sealing ring and described valve seat is positive round, and described sealing ring is corresponding in valve closingThe centrage of elliptic cone and the centrage irrelevancy row of described valve passage.

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