公开(公告)号：US3926216A

公开(公告)日：1975-12-16

申请号：US47714974

申请日：1974-06-06

Applicant: SAAB SCANIA AB

Inventor： RULCKER CARL-EDVARD JAN

IPC: F16K15/03

CPC classification number: F16K15/033 ,  Y10T137/7903

Abstract: The annular body of a damper-type check valve has a mainly cylindrical inner surface that defines a fluid passage, but a ridge around it provides a valve seat that is inclined to the passage axis with its lower part forward in the direction of permitted fluid flow. The damper is dome-shaped, forwardly convex, and is swingable about a pivot axis which is parallel to its horizontal diameter but is spaced thereabove by about half its radius. A counterweight on the convex front face of the damper is concentrated near its geometrical center. A readily removable spring can provide supplemental closing bias on the damper.

Abstract translation: 阻尼型止回阀的环形体具有限定流体通道的主要为圆柱形的内表面，但是其周围的脊部提供了阀座，该阀座相对于通道轴线倾斜，其下部沿允许的流体流动方向向前 。 阻尼器是圆顶形的，向前凸起，并且可围绕平行于其水平直径的枢转轴线摆动，但在其上方间隔大约半个半径。 减震器的凸形前表面上的配重集中在其几何中心附近。 容易拆卸的弹簧可以在阻尼器上提供补充关闭偏压。