興山機械密封包括壓力控制、溫度控制、流體替換(堵塞)和雜質去除系統。在興山機械密封系(xi)(xi)統(tong)(tong)(tong)(tong)中(zhong)，上(shang)述系(xi)(xi)統(tong)(tong)(tong)(tong)并(bing)不同時(shi)包括(kuo)在內(nei)。密(mi)(mi)(mi)封(feng)(feng)(feng)(feng)系(xi)(xi)統(tong)(tong)(tong)(tong)的(de)選擇(ze)主(zhu)要取決于(yu)主(zhu)密(mi)(mi)(mi)封(feng)(feng)(feng)(feng)件(jian)的(de)應用范圍。例如，如果主(zhu)密(mi)(mi)(mi)封(feng)(feng)(feng)(feng)用于(yu)高溫液體(ti)(ti)，密(mi)(mi)(mi)封(feng)(feng)(feng)(feng)系(xi)(xi)統(tong)(tong)(tong)(tong)應確保降(jiang)低(di)(di)主(zhu)密(mi)(mi)(mi)封(feng)(feng)(feng)(feng)的(de)環境溫度(du)，即(ji)(ji)采用溫度(du)控(kong)制系(xi)(xi)統(tong)(tong)(tong)(tong)。如果主(zhu)密(mi)(mi)(mi)封(feng)(feng)(feng)(feng)用于(yu)固(gu)(gu)體(ti)(ti)雜(za)質含(han)量高的(de)工作(zuo)介(jie)質，密(mi)(mi)(mi)封(feng)(feng)(feng)(feng)系(xi)(xi)統(tong)(tong)(tong)(tong)應確保在主(zhu)密(mi)(mi)(mi)封(feng)(feng)(feng)(feng)前(qian)降(jiang)低(di)(di)固(gu)(gu)體(ti)(ti)雜(za)質含(han)量，即(ji)(ji)采用除雜(za)系(xi)(xi)統(tong)(tong)(tong)(tong)。在腐蝕(shi)性介(jie)質中(zhong)，密(mi)(mi)(mi)封(feng)(feng)(feng)(feng)系(xi)(xi)統(tong)(tong)(tong)(tong)必須確保主(zhu)密(mi)(mi)(mi)封(feng)(feng)(feng)(feng)降(jiang)低(di)(di)腐蝕(shi)速率或消除腐蝕(shi)，即(ji)(ji)使用流(liu)體(ti)(ti)而不是堵塞流(liu)體(ti)(ti)系(xi)(xi)統(tong)(tong)(tong)(tong)；在高壓密(mi)(mi)(mi)封(feng)(feng)(feng)(feng)裝置中(zhong)，輔助系(xi)(xi)統(tong)(tong)(tong)(tong)應確保多(duo)級降(jiang)壓和其他措施(shi)，即(ji)(ji)壓力控(kong)制系(xi)(xi)統(tong)(tong)(tong)(tong)。

　　興山機械密封的三個主(zhu)要功能如下：

　　1、沖洗功能，沖洗是興山機械密封基本的功能，它直接將液體注入單面密封或雙面密封的高壓側。一般的興山機械密封應該(gai)沖(chong)洗(xi)，特別(bie)是對于輕烴泵，沖(chong)洗(xi)時達到隔離(li)介(jie)質(zhi)、冷卻和改善潤滑(hua)的目(mu)的。隔離(li)介(jie)質(zhi)的目(mu)的可以通過將與介(jie)質(zhi)相容的液(ye)體引入密封(feng)腔進(jin)行外部循環沖(chong)洗(xi)來(lai)實現(xian)。

　　2、除雜和過濾功能，密封流體中的微細固體粒子、污垢等雜質對興山機械密封造成(cheng)的危害(hai)非常嚴(yan)重，可(ke)能導致密(mi)(mi)(mi)封(feng)端面的磨損，也可(ke)能堵塞寒冷密(mi)(mi)(mi)封(feng)系統的管線(xian)。密(mi)(mi)(mi)封(feng)性系統軟件(jian)具(ju)有去(qu)除殘(can)渣(zha)、保持液(ye)體(ti)(ti)清潔的作用。當(dang)殘(can)渣(zha)的相(xiang)(xiang)對密(mi)(mi)(mi)度小于液(ye)體(ti)(ti)媒(mei)質(zhi)相(xiang)(xiang)對密(mi)(mi)(mi)度時，能用過濾裝置去(qu)除殘(can)渣(zha)；而當(dang)殘(can)渣(zha)的相(xiang)(xiang)對密(mi)(mi)(mi)度超(chao)過液(ye)體(ti)(ti)媒(mei)質(zhi)相(xiang)(xiang)對密(mi)(mi)(mi)度時，可(ke)選用旋液(ye)分離設備或網(wang)式過濾器去(qu)除殘(can)渣(zha)。

　　3、流體替代功能，含有固體顆粒的氣相介質和液相介質的直接密封難度很大，它們溫、毒、貴、易蒸發、易結晶。借助興山機械密封可以用雙端興山機械密封代替密封(feng)介質(zhi)，將難以直接密封(feng)的(de)介質(zhi)轉化為密封(feng)潤滑性能(neng)好、清潔的(de)密封(feng)液體(ti)介質(zhi)。