阀芯轴向位移-中英对照
Accordingly, the opening of the peel-away valve element 40 occurs in a three-step motion: the initial pivotal peel-away break effected by the lower end 49a of claw flange 49; the lock between flange 49 and valve element 40; and the subsequent axial translation of valve element
因此，剥落的阀芯40的开放过程分为三个步骤：爪法兰49的底端49a造成最初的关键性剥离和损坏；法兰49和阀芯40之间的锁定；以及随后的阀芯轴向位移。
The "hammer claw" or "pry bar" mechanism of the embodiment of FIGS. 2-4 achieves an approximately 6:1 mechanical advantage with respect to the opening force applied to valve element 40. The mechanical advantage of the hammer claw embodiment of the invention is of course a function of the length of the lever arm portion of valve element 40 between the leftmost edge of valve seat 34 (the pivot point) and contact point at lower end 49a of flange 49. The 6:1 ratio was deemed to be optimum in view of the size limitations of the overall valve in this particular embodiment. By increasing the width of float 46 or the radial offset of float 46 and valve seat 34, it is possible to employ and utilize a valve element with a longer lever arm portion.
"爪锤"或"撬杆"机制图2-4. 其中达到大约6:1的关于开启力的机械效益，用于阀芯40。机所发明的爪锤的机械效益当然是当然的阀芯的杠杆臂部分的长度的一项功能，该阀芯40位与阀座34最左边缘 (支点)与法兰49的底端49a的接触点之间。鉴于本阀特别装置的整体规模局限性，增加浮标46的宽度或浮标46与法阀座34的径向抵消，有可能使用一个杠杆臂部分更长的阀芯。
Referring now to FIGS. 5-7, an alternate embodiment of the invention is illustrated using a compound lever arrangement to increase the mechanical opening advantage exerted by the float.
现在请看图5-7，发明的备用装置采用复式杠杆排列来提高浮标的机械开启效益。.
In FIGS. 5-7 the compound lever embodiment of the valve opening mechanism is shown generally comprising an outer rectangular lever arm 138 and an inner rectangular valve element 140. Valve element 140 in the valve closed position shown in solid lines in FIG. 5 completely covers valve seat 34. Valve element 140 is connected at one end to lever arm 138 by way of an actuation pin 142 integrally formed in lever arm 138 and defining one end thereof. The cylindrical actuation pin 142 slightly mates with a suitable smooth surface on the end of valve element 140. Valve element 140 rotates about pivot point 146.
在图5-7中，阀芯开放式机械装置的复式杠杆装置一般由外部的矩形杠杆臂138和内部的矩形阀芯140构成。阀芯140在阀停止位置如图5实线所示，完全覆盖了阀座34。阀芯140得一端与杠杆臂138连接，通过驱动销142完全与杠杆臂138连接，并将其中的一端固定其中。元实线显示在无花果。筒形驱动销142与阀芯140尾端的合适的光滑表面稍微紧密结合。 阀芯140围绕支点146旋转。
The end of lever arm 138 opposite actuation pin 142 includes two inwardly extending prongs 139 having beveled ends 141 to engage a float control arm 150 in a snap-fit. Control arm 150 is retained laterally between the prongs by the beveled ends 141 and vertically by a ball 152 on the end of control arm 150. Control arm 150 has formed at its opposite end a short cylindrical cross bar 156 engaged in a snap-fit by hook 154 fastened to float 46 in a suitable manner. The upper surfaces of prongs 139 are preferably rounded as shown at 137 to permit some rotation about ball 152.
驱动销142对面的杠杆臂末端138包括两个内部延伸的弹簧139， 该弹簧拥有斜面末端141，可将与浮动控制臂150插入卡进中并与其啮合。控制臂150横向依靠斜面末端141停留在弹簧之间，纵向通过控制臂150末端的一球状物而停留。控制臂150在其对面底部已形成短圆柱横栏156，通过适当固定在浮标46上的钩子154与卡进啮合。弹簧139的上部表面十分圆滑，如137所示，允许绕球状物152有稍微的旋转。
2014.9.16