| 摘要 |
A butterfly-type check valve (8) in which a valve plate (18) moves translationally relative to a pivot axis (90) and incident to rotational movement (118) of the plate. The translational movement is effected by mechanical links (38, 40) which are pivotally secured to the plate and a support assembly (52, 54, 56, 76, 78). The translational movement is guided by two trunnions (30, 32) pivotally secured to the support assembly, and two rods (20, 22) rigidly secured to the plate and extending through the trunnions.
|
