麗江機械密封又叫(jiao)端(duan)面(mian)密封(feng)，在有關標準中是這樣解說的：由(you)至少(shao)一對垂直(zhi)于(yu)旋(xuan)轉軸線的端(duan)面(mian)在流體壓(ya)力(li)和(he)補償機(ji)構彈力(li)的作用(yong)以及輔助密封(feng)的配合(he)下(xia)保持貼合(he)并(bing)相對滑動而(er)構成的防止流體泄漏的裝置。

　　麗江機械密封自(zi)身(shen)壓(ya)(ya)力(li)增(zeng)壓(ya)(ya)系(xi)統結(jie)構包(bao)括出水(shui)口、固(gu)(gu)(gu)(gu)定(ding)(ding)(ding)(ding)(ding)法(fa)蘭(lan)、泵體、增(zeng)壓(ya)(ya)裝置、電機轉(zhuan)子、吊環(huan)、防護(hu)罩、水(shui)泵、固(gu)(gu)(gu)(gu)定(ding)(ding)(ding)(ding)(ding)基(ji)座(zuo)、底(di)座(zuo)、加(jia)固(gu)(gu)(gu)(gu)件、控(kong)制(zhi)閥、緊(jin)(jin)固(gu)(gu)(gu)(gu)件，所述出水(shui)口與固(gu)(gu)(gu)(gu)定(ding)(ding)(ding)(ding)(ding)法(fa)蘭(lan)相(xiang)(xiang)連(lian)(lian)接(jie)(jie)，泵體與增(zeng)壓(ya)(ya)裝置相(xiang)(xiang)連(lian)(lian)接(jie)(jie)，增(zeng)壓(ya)(ya)裝置由進水(shui)口、水(shui)管、負壓(ya)(ya)室、平(ping)(ping)衡(heng)(heng)固(gu)(gu)(gu)(gu)定(ding)(ding)(ding)(ding)(ding)盤、緊(jin)(jin)固(gu)(gu)(gu)(gu)支架(jia)(jia)組成，進水(shui)口與水(shui)管相(xiang)(xiang)連(lian)(lian)接(jie)(jie)，水(shui)管與負壓(ya)(ya)室相(xiang)(xiang)連(lian)(lian)接(jie)(jie)，負壓(ya)(ya)室通過平(ping)(ping)衡(heng)(heng)固(gu)(gu)(gu)(gu)定(ding)(ding)(ding)(ding)(ding)盤保持平(ping)(ping)衡(heng)(heng)，緊(jin)(jin)固(gu)(gu)(gu)(gu)支架(jia)(jia)與泵體固(gu)(gu)(gu)(gu)定(ding)(ding)(ding)(ding)(ding)連(lian)(lian)接(jie)(jie)，防護(hu)罩與水(shui)泵相(xiang)(xiang)連(lian)(lian)接(jie)(jie)，水(shui)泵與固(gu)(gu)(gu)(gu)定(ding)(ding)(ding)(ding)(ding)基(ji)座(zuo)相(xiang)(xiang)連(lian)(lian)接(jie)(jie)，固(gu)(gu)(gu)(gu)定(ding)(ding)(ding)(ding)(ding)基(ji)座(zuo)與底(di)座(zuo)緊(jin)(jin)固(gu)(gu)(gu)(gu)連(lian)(lian)接(jie)(jie)，底(di)座(zuo)上設有加(jia)固(gu)(gu)(gu)(gu)件，緊(jin)(jin)固(gu)(gu)(gu)(gu)件與底(di)座(zuo)固(gu)(gu)(gu)(gu)定(ding)(ding)(ding)(ding)(ding)連(lian)(lian)接(jie)(jie)。

　　動環和靜環的總稱叫做密封環，是構成麗江機械密封件主要的元件。密封環在很大程度上決定了麗江機械密封件的使用性能和壽命，所以麗江機械密封件對(dui)密(mi)封環有(you)一(yi)些特(te)定(ding)的要求。

　　一、密封環要(yao)容易(yi)加(jia)工制造

　　二、安裝和維修要方便，價格要低廉。

　　三、密封(feng)環要有(you)良好的耐熱沖(chong)擊(ji)(ji)能力，因此材料(liao)要有(you)較(jiao)高的導熱系數和(he)較(jiao)小(xiao)的線膨脹系數，承(cheng)受熱沖(chong)擊(ji)(ji)時不至于(yu)開裂。

　　四、密(mi)(mi)封環要(yao)有良好的(de)自潤滑性，防(fang)止工作中發生短(duan)時間的(de)干(gan)摩擦，不損傷密(mi)(mi)封端(duan)面。因此，密(mi)(mi)封環材料與密(mi)(mi)封流體還要(yao)有很好的(de)浸潤性。

　　五、結構簡單

　　密封環結(jie)構簡(jian)單對(dui)稱，優先考(kao)慮用(yong)整體型結(jie)構，也可(ke)采用(yong)組合式(shi)(shi)密封環，盡(jin)量避免用(yong)密封端面噴涂式(shi)(shi)結(jie)構。

　　六、有足夠的強度和剛度

　　麗江機械密封件(jian)(jian)在工作條(tiao)件(jian)(jian)下不損壞，變形應盡量(liang)的小(xiao)，工作條(tiao)件(jian)(jian)波動時仍能保(bao)持(chi)密(mi)封性。尤(you)其是密(mi)封端面要有(you)足夠(gou)的強度以及一定的耐(nai)腐(fu)蝕能力，保(bao)證產品的使用壽命。