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2. 发明申请

US20070248478A1 Check Valve and Diaphram Pump 审中-公开
标题翻译：止回阀和隔膜泵
公开(公告)号：US20070248478A1
公开(公告)日：2007-10-25
申请号：US11659879
申请日：2005-08-17
申请人： Shigeru Sugiyama , Hidekazu Urano , Katsuyoshi Ohmori
发明人： Shigeru Sugiyama , Hidekazu Urano , Katsuyoshi Ohmori
IPC分类号： F16K15/00 , F04B43/00
CPC分类号： F04B43/046 , Y10T137/7837 , Y10T137/7879
摘要： [Problem] To provide a check valve and a diaphragm pump employing the same which has a good response, and in which a valve chamber can be made small so as to be hardly influenced by bubbles. [Means for Solution] A check valve includes a valve chamber 11 which is defined by a top wall 8 having an introducing port 8a of a fluid, a bottom wall 9 having an exhaust port 9a of the fluid, and a side wall, and a valve body 12a which is supported in the valve chamber 11 in a cantilever manner having its base end fixed to the side wall and its distal end formed as a free end, the valve body being arranged above the introducing port 8a. The bottom wall 9 is formed with a valve seat 9b having an inclined face 9b2 which is inclined so as to be gradually separated from the top wall 8 along the valve body 12a from the base end toward the distal end thereof. When the valve body 12a in the cantilever shape moves between the top wall 8 and the valve seat 9b, the valve body 12a is restricted by the valve seat 9 having the inclined face 9b2, at opening and closing operation of the valve body 12a, whereby a moving amount of the valve body 12a becomes smaller, and response time from an open state to a closed state becomes shorter.
摘要翻译： [问题]提供一种具有良好响应的止回阀和采用该止回阀的隔膜泵，并且其中可以使阀室较小以致几乎不受气泡影响。 [解决方案]止回阀包括阀室11，其由具有流体的引入口8a的顶壁8，具有流体的排气口9a的底壁9和侧壁限定，以及阀体12a，其以悬臂方式支撑在阀室11中，其底端固定在侧壁上，其远端形成为自由端，阀体布置在引入口8a的上方。底壁9形成有具有倾斜面9b2的阀座9b，倾斜面9b 2从顶壁8的底端朝向顶端部8逐渐与上壁8分离。当悬臂形状的阀体12a在顶壁8和阀座9b之间移动时，阀体12a由具有倾斜面9b 2的阀座9限制，在开启和关闭操作时阀体12a，阀体12a的移动量变小，从打开状态到关闭状态的响应时间变短。

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