| 摘要 |
A check valve is provided to relieve impact applied to a valve body when a disc makes contact with the valve body by using a washer. A check valve comprises a valve body(10), a disc, an auxiliary disc(30), an auxiliary shaft(40), an arm(50), a guide unit(70), a balance weight(80) and a link member(60). The valve body(10) is provided at one end thereof with a flange(11) which is coupled to an outlet pipe(3). The valve body(10) includes a water path(12) through which fluid passes. The disc is hinged to the valve body(10) by a rotary shaft(21). The disc rotates around the rotational shaft(21) to open and close the channel(12). The movable auxiliary disc(30) is installed on the disc. A fixing shaft(31) is projected from the center of the auxiliary disc(30).
|
