乃東機械密封利用(yong)機械(xie)方式傳(chuan)(chuan)(chuan)(chuan)(chuan)遞動(dong)(dong)(dong)力(li)和運動(dong)(dong)(dong)的(de)(de)傳(chuan)(chuan)(chuan)(chuan)(chuan)動(dong)(dong)(dong)，機械(xie)傳(chuan)(chuan)(chuan)(chuan)(chuan)動(dong)(dong)(dong)在(zai)機械(xie)工程中應用(yong)非常廣泛，有(you)(you)多種形式，主要包括皮帶(dai)傳(chuan)(chuan)(chuan)(chuan)(chuan)動(dong)(dong)(dong)、齒輪(lun)傳(chuan)(chuan)(chuan)(chuan)(chuan)動(dong)(dong)(dong)、鏈傳(chuan)(chuan)(chuan)(chuan)(chuan)動(dong)(dong)(dong)、蝸桿(gan)蝸輪(lun)傳(chuan)(chuan)(chuan)(chuan)(chuan)動(dong)(dong)(dong)、齒輪(lun)齒條傳(chuan)(chuan)(chuan)(chuan)(chuan)動(dong)(dong)(dong)和螺旋傳(chuan)(chuan)(chuan)(chuan)(chuan)動(dong)(dong)(dong)等。齒輪(lun)傳(chuan)(chuan)(chuan)(chuan)(chuan)動(dong)(dong)(dong)能(neng)夠用(yong)于大(da)功率的(de)(de)場合，傳(chuan)(chuan)(chuan)(chuan)(chuan)動(dong)(dong)(dong)比準(zhun)確，但(dan)一般(ban)要求較(jiao)高的(de)(de)制(zhi)造(zao)精度(du)(du)和安裝精度(du)(du)。還(huan)有(you)(you)一類是靠機件間的(de)(de)摩(mo)(mo)擦(ca)力(li)傳(chuan)(chuan)(chuan)(chuan)(chuan)遞動(dong)(dong)(dong)力(li)和運動(dong)(dong)(dong)的(de)(de)摩(mo)(mo)擦(ca)傳(chuan)(chuan)(chuan)(chuan)(chuan)動(dong)(dong)(dong)，包括帶(dai)傳(chuan)(chuan)(chuan)(chuan)(chuan)動(dong)(dong)(dong)、繩傳(chuan)(chuan)(chuan)(chuan)(chuan)動(dong)(dong)(dong)和摩(mo)(mo)擦(ca)輪(lun)傳(chuan)(chuan)(chuan)(chuan)(chuan)動(dong)(dong)(dong)等。摩(mo)(mo)擦(ca)傳(chuan)(chuan)(chuan)(chuan)(chuan)動(dong)(dong)(dong)容易實現無級變速(su)，可以(yi)適(shi)應軸間距(ju)較(jiao)大(da)的(de)(de)傳(chuan)(chuan)(chuan)(chuan)(chuan)動(dong)(dong)(dong)場合，而(er)過(guo)載(zai)打滑還(huan)能(neng)起到緩沖和保護(hu)傳(chuan)(chuan)(chuan)(chuan)(chuan)動(dong)(dong)(dong)裝置的(de)(de)作用(yong)，但(dan)這(zhe)種傳(chuan)(chuan)(chuan)(chuan)(chuan)動(dong)(dong)(dong)一般(ban)不(bu)能(neng)用(yong)于大(da)功率的(de)(de)場合，也不(bu)能(neng)保證準(zhun)確的(de)(de)傳(chuan)(chuan)(chuan)(chuan)(chuan)動(dong)(dong)(dong)比。

　　傳動形式多，但是乃東機械密封的(de)(de)更換(huan)工(gong)作大同小異，首(shou)先拆前需確認電(dian)機處(chu)于檢修狀態，擰下加油(you)螺塞，用吸管把密封座腔內的(de)(de)潤(run)滑(hua)油(you)吸出(chu)。準備好放置泵零件的(de)(de)工(gong)作臺及拆裝工(gong)具(ju)，切(qie)勿(wu)任意亂放亂用，避(bi)免碰(peng)壞泵的(de)(de)零部件。

　　拆(chai)對分(fen)式聯(lian)軸(zhou)器(qi)(qi)：先(xian)把(ba)聯(lian)軸(zhou)器(qi)(qi)的(de)固(gu)定內六角螺(luo)釘擰(ning)下(xia)(xia)來(lai)，再輕輕把(ba)聯(lian)軸(zhou)器(qi)(qi)的(de)一半從軸(zhou)上慢(man)慢(man)拉下(xia)(xia)，注意(yi)不要掉了，再用梅(mei)花扳手擰(ning)下(xia)(xia)泵(beng)軸(zhou)吊(diao)緊螺(luo)栓和(he)擋塊，讓葉(xie)輪慢(man)慢(man)下(xia)(xia)沉(chen)至泵(beng)體(ti)，然后拆(chai)下(xia)(xia)另外一半聯(lian)軸(zhou)器(qi)(qi)，拿下(xia)(xia)泵(beng)軸(zhou)擋圈。

　　拆卸乃東機械密封：抓住密封彈簧順著泵軸往上提，就(jiu)能拆下來了。

　　拆(chai)卸(xie)并清洗(xi)軸(zhou)承(cheng)座：先輕輕松動一(yi)下軸(zhou)承(cheng)座后用(yong)(yong)拆(chai)卸(xie)螺(luo)栓頂(ding)起軸(zhou)承(cheng)座，并且沿著泵(beng)軸(zhou)往上提而卸(xie)下，再用(yong)(yong)噴氣燃料清洗(xi)軸(zhou)承(cheng)及座，裝前(qian)晾干并涂(tu)抹少許20號(hao)機械油用(yong)(yong)來潤滑保(bao)護(hu)。

　　拆密封(feng)座：擰下密封(feng)座壓緊螺母，輕(qing)輕(qing)卸下密封(feng)座并清洗(xi)。

　　乃東機械密封裝配：在(zai)動、靜環(huan)(huan)鏡面上(shang)(shang)涂一層潔凈(jing)的(de)20號潤(run)滑(hua)油，導(dao)軸(zhou)承座(zuo)也抹上(shang)(shang)潤(run)滑(hua)油，先把靜環(huan)(huan)輕(qing)(qing)輕(qing)(qing)定位裝入導(dao)軸(zhou)承座(zuo)，再在(zai)泵軸(zhou)上(shang)(shang)抹上(shang)(shang)潤(run)滑(hua)油，把動環(huan)(huan)部分輕(qing)(qing)輕(qing)(qing)裝入泵軸(zhou)上(shang)(shang)，用(yong)手(shou)輕(qing)(qing)推密封(feng)環(huan)(huan)應能伸縮(suo)自如(ru)，注意(yi)動、靜環(huan)(huan)部分的(de)防轉部位需裝配到位。

　　裝(zhuang)聯軸(zhou)器(qi)(qi)：在電機軸(zhou)頭上(shang)(shang)(shang)裝(zhuang)上(shang)(shang)(shang)擋圈，裝(zhuang)上(shang)(shang)(shang)一(yi)半聯軸(zhou)器(qi)(qi)，再(zai)在泵軸(zhou)端和聯軸(zhou)器(qi)(qi)槽內裝(zhuang)上(shang)(shang)(shang)擋塊并用梅花扳(ban)手(shou)擰(ning)(ning)緊螺(luo)栓；再(zai)裝(zhuang)上(shang)(shang)(shang)另一(yi)半聯軸(zhou)器(qi)(qi)擰(ning)(ning)上(shang)(shang)(shang)內六角(jiao)螺(luo)釘。安裝(zhuang)聯軸(zhou)器(qi)(qi)正確(que)的(de)檢查要求：對(dui)分式聯軸(zhou)器(qi)(qi)上(shang)(shang)(shang)下間隙(xi)需要均勻，用手(shou)盤動聯軸(zhou)器(qi)(qi)幾圈檢查轉動的(de)靈活性。

　　裝(zhuang)密封座：先將密封座裝(zhuang)入橡膠油封，再把密封座裝(zhuang)入泵蓋并壓在(zai)軸(zhou)(zhou)承座上(shang)，擰(ning)緊螺母(mu)，確保所(suo)有安裝(zhuang)螺釘緊固。當安裝(zhuang)螺釘被用作密封與軸(zhou)(zhou)之(zhi)間(jian)的(de)驅動時(shi)，軸(zhou)(zhou)應打(da)埋頭孔來加固連接(jie)，緊固壓蓋螺栓時(shi)應該平穩緊固，并且不要使壓蓋受彈力(li)。在(zai)可能的(de)地方使用4個以上(shang)螺釘的(de)等間(jian)距壓蓋，緊固壓蓋螺栓時(shi)，用塞(sai)尺檢查軸(zhou)(zhou)與壓蓋之(zhi)間(jian)的(de)間(jian)隙，這在(zai)密封腔對壓蓋不導向時(shi)，顯得特別重要，因為(wei)壓蓋必(bi)須對中。