閥芯軸向位移-中英對(duì)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，剝落的閥芯40的開放過程分為三個(gè)步驟：爪法蘭49的底端49a造成最初的關(guān)鍵性剝離和損壞；法蘭49和閥芯40之間的鎖定；以及隨后的閥芯軸向位移。

 
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.

"爪錘"或"撬桿"機(jī)制圖2-4. 其中達(dá)到大約6:1的關(guān)于開啟力的機(jī)械效益，用于閥芯40。機(jī)所發(fā)明的爪錘的機(jī)械效益當(dāng)然是當(dāng)然的閥芯的杠桿臂部分的長度的一項(xiàng)功能，該閥芯40位與閥座34最左邊緣 (支點(diǎn))與法蘭49的底端49a的接觸點(diǎn)之間。鑒于本閥特別裝置的整體規(guī)模局限性，增加浮標(biāo)46的寬度或浮標(biāo)46與法閥座34的徑向抵消，有可能使用一個(gè)杠桿臂部分更長的閥芯。

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.

現(xiàn)在請(qǐng)看圖5-7，發(fā)明的備用裝置采用復(fù)式杠桿排列來提高浮標(biāo)的機(jī)械開啟效益。.

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.
在圖5-7中，閥芯開放式機(jī)械裝置的復(fù)式杠桿裝置一般由外部的矩形杠桿臂138和內(nèi)部的矩形閥芯140構(gòu)成。閥芯140在閥停止位置如圖5實(shí)線所示，完全覆蓋了閥座34。閥芯140得一端與杠桿臂138連接，通過驅(qū)動(dòng)銷142完全與杠桿臂138連接，并將其中的一端固定其中。元實(shí)線顯示在無花果。筒形驅(qū)動(dòng)銷142與閥芯140尾端的合適的光滑表面稍微緊密結(jié)合。 閥芯140圍繞支點(diǎn)146旋轉(zhuǎn)。

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.
驅(qū)動(dòng)銷142對(duì)面的杠桿臂末端138包括兩個(gè)內(nèi)部延伸的彈簧139， 該彈簧擁有斜面末端141，可將與浮動(dòng)控制臂150插入卡進(jìn)中并與其嚙合�？刂票�150橫向依靠斜面末端141停留在彈簧之間，縱向通過控制臂150末端的一球狀物而停留。控制臂150在其對(duì)面底部已形成短圓柱橫欄156，通過適當(dāng)固定在浮標(biāo)46上的鉤子154與卡進(jìn)嚙合。彈簧139的上部表面十分圓滑，如137所示，允許繞球狀物152有稍微的旋轉(zhuǎn)。

2014.9.16