| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To realize excellent responsiveness, reduce a valve chest in size and prevent the influence by air bubbles in a check valve and a diaphragm pump using it. <P>SOLUTION: The check valve includes the valve chest 11 formed by a ceiling wall 8 having an inlet 8a of a fluid, a bottom wall 9 having an outlet 9a of a fluid, and a side wall, and a valve element 12a supported within the valve chest 11 in a cantilever-like state such that the proximal end of the valve element 12a is secured to the side wall and the top end thereof is free. The valve element 12a is arranged on the inlet 8a. The bottom wall 9 is formed with a valve seat 9b having a slope 9b2 which is inclined in such a manner that it is more spaced from the ceiling wall 8 gradually along the valve element 12a from the proximal end toward its top end. Since the valve element 12a supported in the cantilever-like state moves between the ceiling wall 8 and the valve seat 9b so that the movement of the valve element 12a is restricted by the valve seat 9b having the slope 9b2, the amount of movement of the valve element 12a is reduced when opening/closing the valve, thereby shortening the response time of the valve from the opened state to the closed state. <P>COPYRIGHT: (C)2006,JPO&NCIPI</p> |
