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溫州脫硫泵用機械密封的相關知識普及

發(fa)布時間:2021-12-20 15:23:44 人氣:98706 來源:

  脫硫溫州泵用溫州機械密封靜環(huan)(huan)(huan)(huan)(huan)與殼(ke)體、動(dong)(dong)環(huan)(huan)(huan)(huan)(huan)與軸(zhou)(zhou)形成的(de)間(jian)隙(xi)用(yong)成型填(tian)料密封(feng)(feng)。在(zai)動(dong)(dong)環(huan)(huan)(huan)(huan)(huan)和靜環(huan)(huan)(huan)(huan)(huan)接(jie)觸(chu)的(de)端(duan)面(mian)形成相對(dui)滑動(dong)(dong)面(mian),即動(dong)(dong)密封(feng)(feng)面(mian)。為(wei)保證密封(feng)(feng)良好(hao)(hao),動(dong)(dong)密封(feng)(feng)面(mian)應十分平(ping)直和光(guang)潔。彈簧力和被密封(feng)(feng)的(de)流體壓力使動(dong)(dong)環(huan)(huan)(huan)(huan)(huan)貼(tie)緊靜環(huan)(huan)(huan)(huan)(huan)。因(yin)動(dong)(dong)環(huan)(huan)(huan)(huan)(huan)與軸(zhou)(zhou)通(tong)過彈簧連接(jie),動(dong)(dong)環(huan)(huan)(huan)(huan)(huan)和靜環(huan)(huan)(huan)(huan)(huan)間(jian)貼(tie)合性(xing)受軸(zhou)(zhou)的(de)振動(dong)(dong)和擺動(dong)(dong)影響較小。靜環(huan)(huan)(huan)(huan)(huan)一般常用(yong)潤滑性(xing)好(hao)(hao)的(de)軟質材料如石(shi)墨、填(tian)充聚(ju)四(si)氟乙烯(xi)等(deng),動(dong)(dong)環(huan)(huan)(huan)(huan)(huan)多(duo)用(yong)硬質合金、陶瓷等(deng)材料制(zhi)造(zao)。


  在結構上(shang)(shang)采(cai)取(qu)相應措施后,它可用(yong)于(yu)高(gao)溫、高(gao)壓、高(gao)真空、高(gao)速和腐蝕性(xing)工作(zuo)介質(zhi)的(de)場合(he)。門(men)內部壓力相當時,閘(zha)板(ban)處于(yu)閉合(he)狀態,環成初始密封(feng),每次閥門(men)開(kai)關(guan)時,閥座(zuo)圈能自動清潔閘(zha)板(ban)兩側,壓力作(zuo)用(yong)于(yu)閘(zha)板(ban),迫使(shi)它貼近(jin)出口閥座(zuo)上(shang)(shang)的(de)PTFE環,壓縮它直(zhi)到(dao)閘(zha)板(ban)停(ting)在鋼制(zhi)閥座(zuo)上(shang)(shang),這樣,就(jiu)形(xing)成了雙(shuang)重(zhong)密封(feng),首(shou)先是PTFE對(dui)金(jin)(jin)屬(shu)密封(feng),然后是金(jin)(jin)屬(shu)對(dui)金(jin)(jin)屬(shu)密封(feng),閥座(zuo)也(ye)被牢固(gu)地推到(dao)凹槽,在這一點(dian)O形(xing)圈阻(zu)止任何后部介質(zhi)流。

8.JPG

  形(xing)成(cheng)進(jin)口(kou)密封,管道(dao)壓(ya)力作用于(yu)進(jin)口(kou)閥(fa)(fa)座(zuo)(zuo)(zuo),使其移向(xiang)閘板,這時(shi)形(xing)成(cheng)PTFE對(dui)金屬(shu)密封,同時(shi)O形(xing)圈與閥(fa)(fa)座(zuo)(zuo)(zuo)凹槽形(xing)成(cheng)緊密的(de)密封,當閥(fa)(fa)腔(qiang)壓(ya)力大于(yu)管道(dao)壓(ya)力時(shi),由于(yu)熱膨脹,進(jin)口(kou)閥(fa)(fa)座(zuo)(zuo)(zuo)推向(xiang)凹槽,閥(fa)(fa)腔(qiang)內多余的(de)壓(ya)力在閥(fa)(fa)座(zuo)(zuo)(zuo)與閘板之間(jian)泄放到管道(dao)上。


  脫硫溫州泵用溫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,脫硫溫州泵用溫州機械密封能用(yong)于高溫(wen)、低溫(wen)、高壓、真空(kong)、不同旋轉(zhuan)頻(pin)率(lv),以及各種腐蝕介質和含磨粒介質的密(mi)封(feng),在長期運轉(zhuan)中密(mi)封(feng)狀態很(hen)(hen)穩定,泄(xie)(xie)露量很(hen)(hen)小,其泄(xie)(xie)露約為軟填料密(mi)封(feng)的1%。