1、工作介質和工作條件
在(zai)具體選取(qu)O形圈材料(liao)時,首(shou)先要考慮與工作(zuo)介(jie)質的相容(rong)性(xing)(xing)。還須(xu)綜合(he)(he)考慮其密封處的壓力、溫(wen)度、連(lian)續(xu)工作(zuo)時間、運(yun)行周期等(deng)工作(zuo)條件(jian)(jian)。若用在(zai)旋轉(zhuan)場合(he)(he),須(xu)考慮由于摩擦熱引起(qi)的溫(wen)升。不同的密封件(jian)(jian)材料(liao),其物(wu)理性(xing)(xing)能(neng)和化學性(xing)(xing)能(neng)都(dou)不一樣,見《橡膠密封件(jian)(jian)原料(liao)特(te)性(xing)(xing)表》。
2、密封(feng)形(xing)式按(an)負載類型(xing)可(ke)分為靜(jing)密封(feng)和動密封(feng);按(an)密封(feng)用(yong)途可(ke)分為孔用(yong)密封(feng)、軸(zhou)用(yong)密封(feng)和旋轉軸(zhou)密封(feng);按(an)其(qi)安(an)(an)裝(zhuang)(zhuang)形(xing)式又可(ke)分為徑(jing)(jing)(jing)向(xiang)安(an)(an)裝(zhuang)(zhuang)和軸(zhou)向(xiang)安(an)(an)裝(zhuang)(zhuang)。徑(jing)(jing)(jing)向(xiang)安(an)(an)裝(zhuang)(zhuang)時,對于(yu)(yu)(yu)軸(zhou)用(yong)密封(feng),應(ying)使(shi)(shi)O形(xing)圈內徑(jing)(jing)(jing)和被密封(feng)直(zhi)徑(jing)(jing)(jing)d2間的偏差盡可(ke)能(neng)地小(xiao);對于(yu)(yu)(yu)孔用(yong)密封(feng),應(ying)使(shi)(shi)其(qi)內徑(jing)(jing)(jing)等于(yu)(yu)(yu)或略小(xiao)于(yu)(yu)(yu)溝槽的直(zhi)徑(jing)(jing)(jing)d1。
影響機械密封效(xiao)果的外部因素之四:沒有(you)輔助沖洗(xi)系統(tong)或輔助沖洗(xi)系統(tong)設置不合理
機械(xie)密(mi)封(feng)的輔助(zhu)沖(chong)(chong)(chong)洗(xi)(xi)系統(tong)是非常重要(yao)的。機械(xie)密(mi)封(feng)的輔助(zhu)沖(chong)(chong)(chong)洗(xi)(xi)系統(tong)可以有(you)效(xiao)(xiao)地保護密(mi)封(feng)面,起(qi)到(dao)(dao)冷卻(que)、潤滑(hua)、沖(chong)(chong)(chong)走雜物(wu)等(deng)作用。有(you)時設計(ji)員沒有(you)合理地配置(zhi)輔助(zhu)沖(chong)(chong)(chong)洗(xi)(xi)系統(tong),達不(bu)到(dao)(dao)密(mi)封(feng)效(xiao)(xiao)果;有(you)時雖然設計(ji)人員設計(ji)了輔助(zhu)系統(tong),但由于沖(chong)(chong)(chong)洗(xi)(xi)液中有(you)雜質,沖(chong)(chong)(chong)洗(xi)(xi)液的流量、壓(ya)力不(bu)夠(gou),沖(chong)(chong)(chong)洗(xi)(xi)口位置(zhi)設計(ji)不(bu)合理等(deng)原因(yin),也同樣達不(bu)到(dao)(dao)密(mi)封(feng)效(xiao)(xiao)果。
液(ye)壓密封(feng)(feng)件(jian)(jian)是(shi)液(ye)壓設(she)備的(de)核心,是(shi)液(ye)壓設(she)備正(zheng)常工(gong)(gong)作的(de)保證。所(suo)以,液(ye)壓密封(feng)(feng)件(jian)(jian)的(de)安(an)裝就顯得至(zhi)關重要,安(an)裝過程(cheng)中有(you)任何的(de)差錯都可能(neng)影響密封(feng)(feng)性能(neng),進而(er)影響液(ye)壓設(she)備的(de)正(zheng)常運行(xing)。因此,操作人員在安(an)裝前,有(you)必要了解下液(ye)壓密封(feng)(feng)件(jian)(jian)安(an)裝注意事(shi)項。此外,液(ye)壓密封(feng)(feng)件(jian)(jian)安(an)裝前的(de)存儲(chu)工(gong)(gong)作也應該做到位。大家對于密封(feng)(feng)圈(quan)還有(you)什么(me)想要了解的(de)嗎?隨時聯系我(wo)們哦。
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