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聯系客服,馬上詢價
發布時間:2021-12-20 15:23:44 人氣:98549 來源(yuan):
脫硫隴縣泵用隴縣機械密封靜(jing)(jing)環(huan)(huan)與殼體(ti)、動(dong)(dong)(dong)(dong)(dong)環(huan)(huan)與軸形成的(de)間(jian)隙用(yong)成型填料密封(feng)。在(zai)動(dong)(dong)(dong)(dong)(dong)環(huan)(huan)和(he)靜(jing)(jing)環(huan)(huan)接觸的(de)端面形成相對滑動(dong)(dong)(dong)(dong)(dong)面,即動(dong)(dong)(dong)(dong)(dong)密封(feng)面。為保證(zheng)密封(feng)良好,動(dong)(dong)(dong)(dong)(dong)密封(feng)面應十分平(ping)直和(he)光潔。彈(dan)簧力和(he)被密封(feng)的(de)流體(ti)壓力使動(dong)(dong)(dong)(dong)(dong)環(huan)(huan)貼緊靜(jing)(jing)環(huan)(huan)。因(yin)動(dong)(dong)(dong)(dong)(dong)環(huan)(huan)與軸通過彈(dan)簧連接,動(dong)(dong)(dong)(dong)(dong)環(huan)(huan)和(he)靜(jing)(jing)環(huan)(huan)間(jian)貼合性(xing)受(shou)軸的(de)振動(dong)(dong)(dong)(dong)(dong)和(he)擺動(dong)(dong)(dong)(dong)(dong)影響(xiang)較小。靜(jing)(jing)環(huan)(huan)一般常用(yong)潤滑性(xing)好的(de)軟質(zhi)材(cai)料如石(shi)墨、填充聚四氟乙烯等,動(dong)(dong)(dong)(dong)(dong)環(huan)(huan)多用(yong)硬質(zhi)合金、陶瓷等材(cai)料制造。
在(zai)結構上采取(qu)相(xiang)應措(cuo)施后(hou),它可用(yong)于高(gao)溫、高(gao)壓、高(gao)真空、高(gao)速和腐蝕性工作(zuo)介(jie)質的場合。門內部壓力相(xiang)當時,閘(zha)板處于閉合狀態,環成初始密(mi)封,每次閥(fa)門開(kai)關(guan)時,閥(fa)座圈(quan)(quan)能(neng)自動清潔閘(zha)板兩(liang)側,壓力作(zuo)用(yong)于閘(zha)板,迫(po)使它貼近出口閥(fa)座上的PTFE環,壓縮(suo)它直到閘(zha)板停在(zai)鋼制閥(fa)座上,這(zhe)樣,就形(xing)成了雙重密(mi)封,首先是PTFE對(dui)(dui)金(jin)屬密(mi)封,然后(hou)是金(jin)屬對(dui)(dui)金(jin)屬密(mi)封,閥(fa)座也被牢固地推到凹(ao)槽(cao),在(zai)這(zhe)一(yi)點O形(xing)圈(quan)(quan)阻止任(ren)何后(hou)部介(jie)質流(liu)。
形成(cheng)進口密(mi)封,管(guan)道(dao)壓(ya)力作用于(yu)進口閥(fa)座(zuo)(zuo),使其(qi)移向閘(zha)板,這時(shi)形成(cheng)PTFE對金屬密(mi)封,同時(shi)O形圈與(yu)閥(fa)座(zuo)(zuo)凹槽(cao)形成(cheng)緊密(mi)的密(mi)封,當閥(fa)腔壓(ya)力大于(yu)管(guan)道(dao)壓(ya)力時(shi),由于(yu)熱(re)膨脹,進口閥(fa)座(zuo)(zuo)推(tui)向凹槽(cao),閥(fa)腔內多余(yu)的壓(ya)力在閥(fa)座(zuo)(zuo)與(yu)閘(zha)板之(zhi)間泄放到(dao)管(guan)道(dao)上。
脫硫隴縣泵用隴縣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,脫硫隴縣泵用隴縣機械密封能(neng)用于(yu)高溫、低溫、高壓、真空、不同旋轉(zhuan)頻(pin)率,以及(ji)各種(zhong)腐蝕(shi)介質和含(han)磨粒(li)介質的(de)密(mi)(mi)封(feng),在(zai)長期運轉(zhuan)中密(mi)(mi)封(feng)狀(zhuang)態很穩定,泄露量很小,其泄露約(yue)為軟(ruan)填料密(mi)(mi)封(feng)的(de)1%。