Hydraulic valve arrangement with an annular check valve element

Hydraulic valve arrangement with an annular check valve element

  • CN 102,691,685 A
  • Filed: 03/22/2012
  • Published: 09/26/2012
  • Est. Priority Date: 03/22/2011
  • Status: Active Grant
First Claim
Patent Images

1. control valve unit comprises:

  • Valve body, said valve body have the hole that has ring-shaped depression and have the first fluid port that leads to said ring-shaped depression;

    The endless belt;

    Said band is formed by the bar with the first overlapping end and second end, and said band is positioned at said ring-shaped depression and has normal state, in said normal state;

    Said band is closed the first fluid port and is communicated with fluid between the hole;

    Wherein, the pressure in the said first fluid port causes mark cun contraction, and the fluid path between said first fluid port and the said hole is provided thus;

    AndStop member, said stop member is attached to one of said valve body and said endless belt, is used to limit the contraction of said band.

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