公开(公告)号：US5333644A

公开(公告)日：1994-08-02

申请号：US180277

申请日：1994-01-12

申请人： Eddy F. M. G. Heyden ,  Christian LaCour ,  Michel M. A. A. Lechevalier ,  Christophe N. Riou

发明人： Eddy F. M. G. Heyden ,  Christian LaCour ,  Michel M. A. A. Lechevalier ,  Christophe N. Riou

IPC分类号： F16K1/44 ,  F16K1/00

CPC分类号： F16K1/443 ,  Y10T137/88038 ,  Y10T137/88046

摘要： A valve assembly is disclosed having a valve body with dual valve seats and movable valve member located in the valve body having dual sealing surfaces to bear against the two value seats. One of the valve seats has a sharp-edged configuration which is contacted by a generally frusto-conical sealing surface on a movable primary valve member to crush or break any foreign material in the fluid flow stream. The conical sealing surface and the sharp-edged valve seat also act as a seal to block the fluid flow passageway. A secondary valve member is attached to the primary valve member and has a second sealing surface configured to engage the second valve seat of the valve body. The second valve seat and the second sealing surface may be annular and each have a partially, spherical, cross-sectional configuration. The secondary valve member is connected to the primary valve member such that they may move relatively to each other along their axis of movement. The primary valve member may also be skewed relative to its axis of movement, caused by any foreign particles between the sharp-edged valve seat and the frusto-conical sealing surface without such skewed movement being imparted to the secondary valve member. Thus, even if the primary valve member should be skewed relative to its axis of movement, thereby preventing the first sealing surface from blocking the fluid flow passageway, the sealing surface of the secondary valve member will still contact the second valve seat to block the fluid flow passageway.

摘要翻译： 公开了一种阀组件，其具有带有双阀座的阀体和位于阀体中的可移动阀构件，该阀体具有双重密封表面以抵靠两个阀座。 其中一个阀座具有锋利的边缘构造，其通过可移动主阀构件上的大致截头圆锥形密封表面接触，以挤压或打破流体流动流中的任何异物。 锥形密封表面和锋利的边缘阀座也用作密封件以阻塞流体流动通道。 次级阀构件附接到主阀构件并且具有构造成接合阀体的第二阀座的第二密封表面。 第二阀座和第二密封表面可以是环形的，并且每个具有部分，球形的横截面构造。 第二阀构件连接到主阀构件，使得它们可以沿其运动轴线相对于彼此移动。 主阀构件也可以相对于其运动轴线倾斜，由尖锐的阀座与截头圆锥形密封表面之间的任何外来颗粒引起，而不会使这种偏移运动被赋予次级阀构件。 因此，即使主阀构件相对于其运动轴线应该倾斜，从而防止第一密封表面阻塞流体流动通道，次级阀构件的密封表面仍将接触第二阀座以阻塞流体 流通道。