掃一掃,加微信
聯系客服,馬上詢價
發布時間:2021-12-20 15:23:44 人氣:98691 來源:
脫硫池州泵用池州機械密封靜(jing)環(huan)(huan)(huan)(huan)與殼(ke)體、動(dong)(dong)(dong)(dong)環(huan)(huan)(huan)(huan)與軸(zhou)(zhou)形成的(de)間(jian)(jian)隙用成型填料密封。在動(dong)(dong)(dong)(dong)環(huan)(huan)(huan)(huan)和靜(jing)環(huan)(huan)(huan)(huan)接觸的(de)端面(mian)形成相(xiang)對滑(hua)動(dong)(dong)(dong)(dong)面(mian),即動(dong)(dong)(dong)(dong)密封面(mian)。為保證密封良好,動(dong)(dong)(dong)(dong)密封面(mian)應(ying)十分(fen)平直(zhi)和光潔。彈(dan)簧力(li)和被密封的(de)流體壓力(li)使動(dong)(dong)(dong)(dong)環(huan)(huan)(huan)(huan)貼(tie)緊靜(jing)環(huan)(huan)(huan)(huan)。因動(dong)(dong)(dong)(dong)環(huan)(huan)(huan)(huan)與軸(zhou)(zhou)通(tong)過彈(dan)簧連接,動(dong)(dong)(dong)(dong)環(huan)(huan)(huan)(huan)和靜(jing)環(huan)(huan)(huan)(huan)間(jian)(jian)貼(tie)合性受軸(zhou)(zhou)的(de)振(zhen)動(dong)(dong)(dong)(dong)和擺動(dong)(dong)(dong)(dong)影響較小(xiao)。靜(jing)環(huan)(huan)(huan)(huan)一般常用潤(run)滑(hua)性好的(de)軟質(zhi)材料如(ru)石(shi)墨、填充(chong)聚四氟乙(yi)烯等,動(dong)(dong)(dong)(dong)環(huan)(huan)(huan)(huan)多用硬質(zhi)合金、陶瓷等材料制造(zao)。
在(zai)(zai)結構上采取相應(ying)措施后,它(ta)可用(yong)于高(gao)溫、高(gao)壓(ya)、高(gao)真空、高(gao)速和(he)腐蝕性工作介(jie)質的(de)場合。門(men)內部壓(ya)力(li)(li)相當時(shi),閘(zha)板(ban)處于閉合狀(zhuang)態(tai),環成(cheng)初始密封(feng),每次閥(fa)門(men)開關(guan)時(shi),閥(fa)座(zuo)圈能(neng)自動(dong)清潔閘(zha)板(ban)兩側,壓(ya)力(li)(li)作用(yong)于閘(zha)板(ban),迫使(shi)它(ta)貼近(jin)出口閥(fa)座(zuo)上的(de)PTFE環,壓(ya)縮它(ta)直到(dao)閘(zha)板(ban)停(ting)在(zai)(zai)鋼制(zhi)閥(fa)座(zuo)上,這樣,就形成(cheng)了雙重密封(feng),首(shou)先是(shi)PTFE對金(jin)屬密封(feng),然后是(shi)金(jin)屬對金(jin)屬密封(feng),閥(fa)座(zuo)也被牢固地推到(dao)凹槽,在(zai)(zai)這一(yi)點O形圈阻止任何后部介(jie)質流。
形(xing)成進口(kou)密封,管道壓(ya)力(li)(li)(li)作用于(yu)進口(kou)閥(fa)座(zuo),使其移向(xiang)閘板(ban),這時(shi)形(xing)成PTFE對金屬密封,同時(shi)O形(xing)圈與(yu)(yu)閥(fa)座(zuo)凹槽形(xing)成緊密的密封,當閥(fa)腔(qiang)壓(ya)力(li)(li)(li)大于(yu)管道壓(ya)力(li)(li)(li)時(shi),由于(yu)熱膨脹,進口(kou)閥(fa)座(zuo)推向(xiang)凹槽,閥(fa)腔(qiang)內多(duo)余的壓(ya)力(li)(li)(li)在閥(fa)座(zuo)與(yu)(yu)閘板(ban)之(zhi)間泄放到管道上。
脫硫池州泵用池州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,脫硫池州泵用池州機械密封能用于高溫(wen)、低溫(wen)、高壓、真空、不同旋轉(zhuan)頻率(lv),以及各(ge)種腐蝕介質和含(han)磨粒(li)介質的(de)密(mi)封,在長(chang)期運轉(zhuan)中密(mi)封狀態很穩定,泄露量很小(xiao),其泄露約(yue)為軟填料(liao)密(mi)封的(de)1%。