主要用于氣體、大口徑水管線及蒸汽等介質(zhì)管路中, 防止倒流, 控制閥啟閉部件除靠介質(zhì)流動(dòng)自行關(guān)閉以外，還通過(guò)彈簧復(fù)位執(zhí)行機(jī)構(gòu)強(qiáng)制關(guān)閉，以避免關(guān)閉力矩不夠，倒流帶來(lái)危害，工作壓力高時(shí)，還可加裝液壓緩閉裝置，防止水錘、氣錘損害設(shè)備。
主要特點(diǎn)：
閥體采用大偏心的三偏心蝶型閥結(jié)構(gòu)，蝶板形成重錘自動(dòng)關(guān)閉。
不需要外加重錘，減少流阻損失，通過(guò)彈簧復(fù)位氣缸，提供力矩助關(guān)。
金屬密封啟閉零泄漏，耐沖涮，抗創(chuàng)擊，必要時(shí)加裝，液壓緩閉系統(tǒng)。
介質(zhì)回流壓力加上彈簧助關(guān)，確保閥門止回的密封性能。
角行程動(dòng)作，軸向填料密封確保不滲漏 。
It mainly used to pipeline on gas, steam and so on to prevent regorging.Depending on the operating medium itself to close, besides, it can be closed forcibly by the spring return actuator, avoiding dangerous by flow backwards. If the working pressure is too high, we can fix hydraulic pressure sets to prevent water hammer and air hammer from damaging equipments.
Main characteristic:
The body valve is three eccentric butterfly structures, the disc can became a hammer to close automatically.
Reducing flow block without hammer. Spring return cylinder helps to offer torque.
Metal seated reaches zero leakage
Flow backwards of operating medium and spring return guarantees valve’s seal.
Angle action
氣動(dòng)金屬密封蝶型主動(dòng)式止回閥
Metal seated Butterfly pneumatic check valve
結(jié)構(gòu)性能特點(diǎn)structure characters
大偏心軸設(shè)計(jì)形成重錘自動(dòng)關(guān)閉
在三偏心結(jié)構(gòu)基礎(chǔ)上，閥軸偏置距離加大，將蝶板一端形成重錘，可以自動(dòng)關(guān)閉閥門，同時(shí)加裝輔助氣動(dòng)彈簧關(guān)閉系統(tǒng)，在介質(zhì)回流壓力不夠時(shí)，在未回流前將蝶板預(yù)先關(guān)閉，確保止回和減免水錘現(xiàn)象的發(fā)生。
Eccentric axial design
On the base of the Eccentric triple structure, it makes the stem wider than before, which produce a hammer makes the valve close automatically. At the same time, it sets assistant pneumatic spring system, ensures safety and decrease water hammer.
無(wú)滑動(dòng)磨損實(shí)現(xiàn)長(zhǎng)壽命
斜錐面金屬密封蝶閥設(shè)計(jì)采用了一個(gè)雙偏心和一個(gè)特殊斜錐橢圓密封結(jié)構(gòu)，實(shí)現(xiàn)蝶板在開(kāi)啟瞬間密封面即分離，關(guān)閉接觸即密封的效果，這種密封結(jié)構(gòu)實(shí)現(xiàn)啟閉無(wú)機(jī)械滑動(dòng)摩擦，大大延長(zhǎng)了密封件的使用壽命, 并且達(dá)到啟閉輕松自如目的，且具有密封自動(dòng)補(bǔ)償功能。
No slip friction Realizing long service life.
The Metal seated butterfly valve adopts a double eccentric structure and a inclined cone seal. The seal-ring can be separated once open the disk, and the valve can be sealed once the seal-ring contacts the disk. This structure can decrease the friction torque when the butterfly valve opens and closes, and expanded the life time, and make opening and closing easily.
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