Four-eccentric butterfly valve and sealing ring

Four-eccentric butterfly valve and sealing ring

  • CN 103,759,025 A
  • Filed: 10/08/2013
  • Published: 04/30/2014
  • Est. Priority Date: 10/08/2013
  • Status: Active Grant
First Claim
Patent Images

1. an eccentric-butterfly-valve, comprise valve rod, dish plate, valve body, valve seat and seal ring, described valve body has a valve passage, the outside of described valve passage is provided with valve seat, described dish plate is arranged in valve passage, described valve rod is connected with dish plate, be used for driving dish plate to rotate, it is characterized in that, on described dish plate, seal ring is installed, described seal ring forms sealing surface when valve closing and between valve seat, and shaft axis and the sealing surface of described valve rod do not coincide, and the shaft axis of described valve rod and the center line of described valve passage are non-intersect;

  • The outer surface of described seal ring matches with the internal surface of valve seat, and is a part for an elliptic cone outer surface on space;

    The cross section of described seal ring is for just round or approximate just round, and the center line of described seal ring corresponding elliptic cone when valve closing and the center line irrelevancy of described valve passage are capable.

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