公开(公告)号：US5660371A

公开(公告)日：1997-08-26

申请号：US567314

申请日：1995-12-05

申请人： Dennis Leroy Davis ,  Michael Gene Wiltfong

发明人： Dennis Leroy Davis ,  Michael Gene Wiltfong

IPC分类号： F16K3/02 ,  F16K3/00

CPC分类号： F16K3/0281

摘要： An isolation damper for positioning in a duct passageway has a housing which forms a sealing chamber. The housing has a removable access panel for providing access to the sealing chamber. The damper has a blade which is capable of being actuated between an open position, wherein it allows passage of gas through the housing, and a closed position, wherein the passage of gas through the housing is blocked. A replaceable seal unit is slidably positionable within the sealing chamber by removing the access panel. The seal unit includes a first sealing plate and a second sealing plate. Each plate has an opening formed therein to allow passage of gas therethrough. Further, each plate also has a flexible sealing member attached thereto and extending about the periphery of the opening. The sealing members contact opposite surfaces of the blade when the blade is in its closed position to prevent passage of gas through the housing.

摘要翻译： 用于定位在管道通道中的隔离阻尼器具有形成密封室的壳体。 壳体具有用于提供进入密封室的可拆卸的检修面板。 阻尼器具有能够在打开位置之间致动的叶片，其中其允许气体通过壳体和关闭位置，其中气体通过壳体的通道被阻挡。 通过移除检修面板，可更换密封单元可滑动地定位在密封腔内。 密封单元包括第一密封板和第二密封板。 每个板具有形成在其中的开口以允许气体通过其中。 此外，每个板还具有附接到其上的柔性密封构件并且围绕开口的周边延伸。 当叶片处于其关闭位置时，密封构件接触叶片的相对表面，以防止气体通过壳体。