脫硫和田泵用和田機械密封靜環(huan)(huan)與(yu)殼(ke)體、動(dong)(dong)(dong)(dong)(dong)(dong)環(huan)(huan)與(yu)軸形(xing)成的(de)(de)間(jian)隙用(yong)(yong)成型填料(liao)密(mi)(mi)(mi)封。在動(dong)(dong)(dong)(dong)(dong)(dong)環(huan)(huan)和靜環(huan)(huan)接觸的(de)(de)端面(mian)形(xing)成相對滑動(dong)(dong)(dong)(dong)(dong)(dong)面(mian)，即動(dong)(dong)(dong)(dong)(dong)(dong)密(mi)(mi)(mi)封面(mian)。為保證密(mi)(mi)(mi)封良好(hao)，動(dong)(dong)(dong)(dong)(dong)(dong)密(mi)(mi)(mi)封面(mian)應十分(fen)平直和光潔。彈簧力(li)和被密(mi)(mi)(mi)封的(de)(de)流(liu)體壓力(li)使動(dong)(dong)(dong)(dong)(dong)(dong)環(huan)(huan)貼緊靜環(huan)(huan)。因動(dong)(dong)(dong)(dong)(dong)(dong)環(huan)(huan)與(yu)軸通過彈簧連接，動(dong)(dong)(dong)(dong)(dong)(dong)環(huan)(huan)和靜環(huan)(huan)間(jian)貼合(he)性(xing)受軸的(de)(de)振(zhen)動(dong)(dong)(dong)(dong)(dong)(dong)和擺動(dong)(dong)(dong)(dong)(dong)(dong)影響較小。靜環(huan)(huan)一般常(chang)用(yong)(yong)潤滑性(xing)好(hao)的(de)(de)軟質材料(liao)如石(shi)墨、填充(chong)聚四氟(fu)乙烯等(deng)(deng)，動(dong)(dong)(dong)(dong)(dong)(dong)環(huan)(huan)多(duo)用(yong)(yong)硬質合(he)金、陶(tao)瓷(ci)等(deng)(deng)材料(liao)制造。

　　在結構上(shang)采(cai)取相應措施后，它可用于高(gao)溫、高(gao)壓、高(gao)真空、高(gao)速和腐蝕性(xing)工作(zuo)介(jie)質的(de)場合。門內部(bu)(bu)壓力相當時，閘板處于閉合狀(zhuang)態，環(huan)(huan)成初始密(mi)封(feng)(feng)，每(mei)次(ci)閥門開(kai)關時，閥座(zuo)圈(quan)能自(zi)動清潔(jie)閘板兩側，壓力作(zuo)用于閘板，迫使(shi)它貼近出口閥座(zuo)上(shang)的(de)PTFE環(huan)(huan)，壓縮它直到閘板停在鋼制閥座(zuo)上(shang)，這(zhe)樣，就形成了雙重密(mi)封(feng)(feng)，首先是(shi)PTFE對金(jin)屬(shu)密(mi)封(feng)(feng)，然后是(shi)金(jin)屬(shu)對金(jin)屬(shu)密(mi)封(feng)(feng)，閥座(zuo)也被牢固地推(tui)到凹槽(cao)，在這(zhe)一點O形圈(quan)阻止任何后部(bu)(bu)介(jie)質流。

　　形(xing)成進口密封，管(guan)道壓(ya)力作用于進口閥(fa)座，使其(qi)移向(xiang)閘板(ban)，這(zhe)時形(xing)成PTFE對金(jin)屬密封，同(tong)時O形(xing)圈(quan)與閥(fa)座凹(ao)(ao)槽形(xing)成緊密的(de)(de)密封，當閥(fa)腔壓(ya)力大于管(guan)道壓(ya)力時，由于熱膨脹，進口閥(fa)座推(tui)向(xiang)凹(ao)(ao)槽，閥(fa)腔內(nei)多余的(de)(de)壓(ya)力在閥(fa)座與閘板(ban)之間泄放到管(guan)道上。

　　脫硫和田泵用和田機械密封采用帶自密封能力的填料結構，無需經常調節，開、關極為輕便，且密封性可靠，填料函處設有輔助密封油脂注入結構，整體鑄造托架止動裝置，定位組裝的托架閥瓣，使得閥座更加穩定可靠，軸或軸套基本上不磨損，端面磨損后可自動補償，一般情況下不需經常性維修，脫硫和田泵用和田機械密封能(neng)用于高溫(wen)、低溫(wen)、高壓、真(zhen)空、不同旋轉頻率(lv)，以及各(ge)種(zhong)腐蝕介質和(he)含磨(mo)粒(li)介質的密(mi)封，在長期(qi)運轉中(zhong)密(mi)封狀態很穩(wen)定，泄(xie)(xie)露量很小，其泄(xie)(xie)露約為軟填料密(mi)封的1%。