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三道鎮如何對機械密封進行更換工作

發布時(shi)間(jian):2021-06-01 15:17:49 人氣:182049 來源:川工密封

  三道鎮機械密封利用(yong)(yong)機械方式(shi)傳(chuan)(chuan)(chuan)(chuan)(chuan)遞(di)(di)動(dong)力和(he)(he)運動(dong)的(de)傳(chuan)(chuan)(chuan)(chuan)(chuan)動(dong),機械傳(chuan)(chuan)(chuan)(chuan)(chuan)動(dong)在機械工(gong)程中(zhong)應(ying)用(yong)(yong)非常廣(guang)泛(fan),有多種(zhong)形式(shi),主要包括皮帶傳(chuan)(chuan)(chuan)(chuan)(chuan)動(dong)、齒(chi)(chi)輪(lun)傳(chuan)(chuan)(chuan)(chuan)(chuan)動(dong)、鏈傳(chuan)(chuan)(chuan)(chuan)(chuan)動(dong)、蝸桿蝸輪(lun)傳(chuan)(chuan)(chuan)(chuan)(chuan)動(dong)、齒(chi)(chi)輪(lun)齒(chi)(chi)條傳(chuan)(chuan)(chuan)(chuan)(chuan)動(dong)和(he)(he)螺旋傳(chuan)(chuan)(chuan)(chuan)(chuan)動(dong)等。齒(chi)(chi)輪(lun)傳(chuan)(chuan)(chuan)(chuan)(chuan)動(dong)能夠(gou)用(yong)(yong)于(yu)大功率的(de)場合,傳(chuan)(chuan)(chuan)(chuan)(chuan)動(dong)比準確,但一(yi)般(ban)(ban)要求較高的(de)制造精(jing)度(du)和(he)(he)安裝(zhuang)精(jing)度(du)。還(huan)有一(yi)類是靠(kao)機件間的(de)摩擦力傳(chuan)(chuan)(chuan)(chuan)(chuan)遞(di)(di)動(dong)力和(he)(he)運動(dong)的(de)摩擦傳(chuan)(chuan)(chuan)(chuan)(chuan)動(dong),包括帶傳(chuan)(chuan)(chuan)(chuan)(chuan)動(dong)、繩傳(chuan)(chuan)(chuan)(chuan)(chuan)動(dong)和(he)(he)摩擦輪(lun)傳(chuan)(chuan)(chuan)(chuan)(chuan)動(dong)等。摩擦傳(chuan)(chuan)(chuan)(chuan)(chuan)動(dong)容(rong)易實現無級變速,可以適(shi)應(ying)軸間距較大的(de)傳(chuan)(chuan)(chuan)(chuan)(chuan)動(dong)場合,而(er)過載(zai)打滑還(huan)能起到(dao)緩沖(chong)和(he)(he)保護傳(chuan)(chuan)(chuan)(chuan)(chuan)動(dong)裝(zhuang)置(zhi)的(de)作用(yong)(yong),但這種(zhong)傳(chuan)(chuan)(chuan)(chuan)(chuan)動(dong)一(yi)般(ban)(ban)不能用(yong)(yong)于(yu)大功率的(de)場合,也(ye)不能保證(zheng)準確的(de)傳(chuan)(chuan)(chuan)(chuan)(chuan)動(dong)比。

  傳動形式多,但是三道鎮機械密封的更換工作大同(tong)小異(yi),首(shou)先拆前需確認電機處于(yu)檢修狀態(tai),擰下加(jia)油螺塞,用吸管把密封(feng)座腔內的潤滑(hua)油吸出。準備好放置泵零(ling)件(jian)的工作臺及拆裝工具,切勿任意亂(luan)放亂(luan)用,避免碰壞泵的零(ling)部件(jian)。

  拆(chai)對(dui)分式聯(lian)軸(zhou)器:先把聯(lian)軸(zhou)器的(de)固定內六角螺(luo)釘(ding)擰(ning)下(xia)(xia)來,再輕輕把聯(lian)軸(zhou)器的(de)一半從(cong)軸(zhou)上慢(man)(man)慢(man)(man)拉下(xia)(xia),注意不要掉(diao)了,再用梅花扳(ban)手擰(ning)下(xia)(xia)泵(beng)軸(zhou)吊緊螺(luo)栓和擋塊,讓葉輪慢(man)(man)慢(man)(man)下(xia)(xia)沉(chen)至泵(beng)體,然后拆(chai)下(xia)(xia)另外(wai)一半聯(lian)軸(zhou)器,拿(na)下(xia)(xia)泵(beng)軸(zhou)擋圈。

  拆卸三道鎮機械密封:抓住密封彈(dan)簧順著泵軸往(wang)上提,就(jiu)能拆(chai)下來了。

  拆(chai)卸(xie)并(bing)(bing)清洗軸(zhou)承(cheng)座(zuo):先輕(qing)輕(qing)松動一下軸(zhou)承(cheng)座(zuo)后用拆(chai)卸(xie)螺栓頂起軸(zhou)承(cheng)座(zuo),并(bing)(bing)且(qie)沿著泵(beng)軸(zhou)往上提(ti)而(er)卸(xie)下,再用噴氣燃料清洗軸(zhou)承(cheng)及座(zuo),裝前晾干并(bing)(bing)涂抹(mo)少(shao)許20號機械油用來潤滑保護。

  拆(chai)密(mi)封(feng)(feng)座:擰下(xia)密(mi)封(feng)(feng)座壓緊螺(luo)母,輕(qing)輕(qing)卸下(xia)密(mi)封(feng)(feng)座并(bing)清洗。

  三道鎮機械密封裝(zhuang)配:在動、靜環鏡面(mian)上(shang)涂一層潔凈的(de)20號潤(run)滑(hua)油,導(dao)軸(zhou)承座也抹(mo)(mo)上(shang)潤(run)滑(hua)油,先把(ba)靜環輕(qing)輕(qing)定位裝(zhuang)入導(dao)軸(zhou)承座,再(zai)在泵(beng)軸(zhou)上(shang)抹(mo)(mo)上(shang)潤(run)滑(hua)油,把(ba)動環部(bu)分輕(qing)輕(qing)裝(zhuang)入泵(beng)軸(zhou)上(shang),用手輕(qing)推密(mi)封(feng)環應能伸縮自如(ru),注意動、靜環部(bu)分的(de)防轉部(bu)位需裝(zhuang)配到位。

  裝(zhuang)聯(lian)(lian)(lian)軸(zhou)器(qi):在(zai)電機(ji)軸(zhou)頭(tou)上裝(zhuang)上擋圈(quan),裝(zhuang)上一半聯(lian)(lian)(lian)軸(zhou)器(qi),再在(zai)泵軸(zhou)端和聯(lian)(lian)(lian)軸(zhou)器(qi)槽內(nei)(nei)裝(zhuang)上擋塊并用梅花扳手擰(ning)緊螺栓;再裝(zhuang)上另(ling)一半聯(lian)(lian)(lian)軸(zhou)器(qi)擰(ning)上內(nei)(nei)六角螺釘(ding)。安裝(zhuang)聯(lian)(lian)(lian)軸(zhou)器(qi)正(zheng)確的(de)檢查(cha)要(yao)求:對分式聯(lian)(lian)(lian)軸(zhou)器(qi)上下(xia)間(jian)隙(xi)需(xu)要(yao)均勻,用手盤動聯(lian)(lian)(lian)軸(zhou)器(qi)幾圈(quan)檢查(cha)轉動的(de)靈(ling)活性(xing)。

  裝(zhuang)密(mi)(mi)封(feng)(feng)座(zuo):先將密(mi)(mi)封(feng)(feng)座(zuo)裝(zhuang)入(ru)橡(xiang)膠油(you)封(feng)(feng),再(zai)把密(mi)(mi)封(feng)(feng)座(zuo)裝(zhuang)入(ru)泵(beng)蓋(gai)(gai)(gai)并(bing)壓(ya)在軸承座(zuo)上(shang),擰緊螺(luo)母(mu),確(que)保所有安(an)裝(zhuang)螺(luo)釘緊固。當安(an)裝(zhuang)螺(luo)釘被用作密(mi)(mi)封(feng)(feng)與(yu)軸之間的驅動時,軸應打(da)埋(mai)頭孔(kong)來(lai)加固連接,緊固壓(ya)蓋(gai)(gai)(gai)螺(luo)栓時應該平穩緊固,并(bing)且(qie)不要(yao)使(shi)壓(ya)蓋(gai)(gai)(gai)受彈力。在可能(neng)的地方使(shi)用4個以(yi)上(shang)螺(luo)釘的等間距(ju)壓(ya)蓋(gai)(gai)(gai),緊固壓(ya)蓋(gai)(gai)(gai)螺(luo)栓時,用塞尺檢查軸與(yu)壓(ya)蓋(gai)(gai)(gai)之間的間隙,這在密(mi)(mi)封(feng)(feng)腔對壓(ya)蓋(gai)(gai)(gai)不導向時,顯得特(te)別重要(yao),因為壓(ya)蓋(gai)(gai)(gai)必須對中。