密封原理：

WOSHENG三(san)偏(pian)(pian)心(xin)雙(shuang)向硬密(mi)(mi)封(feng)(feng)(feng)蝶(die)在(zai)(zai)雙(shuang)偏(pian)(pian)心(xin)蝶(die)閥(fa)(fa)的(de)(de)基礎上(shang)將閥(fa)(fa)座(zuo)中(zhong)(zhong)心(xin)線再與(yu)閥(fa)(fa)體中(zhong)(zhong)心(xin)線形(xing)(xing)成一個(ge)P角偏(pian)(pian)置，使(shi)(shi)得(de)蝶(die)閥(fa)(fa)在(zai)(zai)啟(qi)閉過程中(zhong)(zhong)，蝶(die)板的(de)(de)密(mi)(mi)封(feng)(feng)(feng)面(mian)(mian)在(zai)(zai)開啟(qi)瞬(shun)間(jian)(jian)立即脫(tuo)離閥(fa)(fa)座(zuo)密(mi)(mi)封(feng)(feng)(feng)面(mian)(mian)，而(er)在(zai)(zai)關閉瞬(shun)間(jian)(jian)才(cai)會接(jie)觸并壓緊閥(fa)(fa)座(zuo)密(mi)(mi)封(feng)(feng)(feng)面(mian)(mian)。當完(wan)全開啟(qi)時，兩密(mi)(mi)封(feng)(feng)(feng)面(mian)(mian)之間(jian)(jian)形(xing)(xing)成一個(ge)與(yu)雙(shuang)偏(pian)(pian)心(xin)密(mi)(mi)封(feng)(feng)(feng)蝶(die)閥(fa)(fa)相同間(jian)(jian)腺(xian)Y，該類蝶(die)閥(fa)(fa)的(de)(de)設計，徹底(di)消(xiao)除了兩密(mi)(mi)封(feng)(feng)(feng)面(mian)(mian)之間(jian)(jian)的(de)(de)機械磨損(sun)和(he)擦傷，使(shi)(shi)蝶(die)閥(fa)(fa)的(de)(de)密(mi)(mi)封(feng)(feng)(feng)性能和(he)使(shi)(shi)用壽(shou)命得(de)到(dao)(dao)大(da)(da)大(da)(da)提高。閥(fa)(fa)門關閉時，密(mi)(mi)封(feng)(feng)(feng)圈受(shou)閥(fa)(fa)體密(mi)(mi)封(feng)(feng)(feng)面(mian)(mian)和(he)蝶(die)板的(de)(de)擠壓，產生(sheng)了兩個(ge)方(fang)向上(shang)的(de)(de)彈(dan)性變形(xing)(xing)。密(mi)(mi)封(feng)(feng)(feng)面(mian)(mian)在(zai)(zai)長軸(zhou)(zhou)方(fang)向上(shang)受(shou)到(dao)(dao)了向外的(de)(de)張力在(zai)(zai)短(duan)軸(zhou)(zhou)方(fang)向上(shang)受(shou)到(dao)(dao)向內的(de)(de)壓應力，長短(duan)軸(zhou)(zhou)產生(sheng)不同方(fang)向的(de)(de)彈(dan)性變形(xing)(xing)。從而(er)使(shi)(shi)閥(fa)(fa)門密(mi)(mi)封(feng)(feng)(feng)面(mian)(mian)問的(de)(de)密(mi)(mi)封(feng)(feng)(feng)力逐漸達到(dao)(dao)最大(da)(da)值。

這(zhe)一獨特的偏心組合(he)，既(ji)利用了凸輪效應(ying)，又完(wan)全消除了摩擦(ca)，從而實現閥門90°行程中，閥座與(yu)蝶板上的密封(feng)圈之間無摩擦(ca)，去除了磨損(sun)和泄漏的可能(neng)。