雙罐式自動反沖洗過濾器多為兩臺過濾器(A和B)并聯切換使用。正常過濾操作時，過濾器A全流量運行，過(guo)(guo)濾器(qi)(qi)B備機待用。當(dang)系統(tong)運行壓(ya)差(總進、出(chu)口壓(ya)力降)達到(dao)設(she)定(ding)值或(huo)系統(tong)運行時(shi)(shi)間達到(dao)設(she)定(ding)值時(shi)(shi)，過(guo)(guo)濾系統(tong)自動投用過(guo)(guo)濾器(qi)(qi)B，將過(guo)(guo)濾器(qi)(qi)A切出(chu)過(guo)(guo)濾操(cao)作。此時(shi)(shi)對過(guo)(guo)濾器(qi)(qi)A進行輔助液體反向沖(chong)洗(xi)，過(guo)(guo)濾器(qi)(qi)A反沖(chong)洗(xi)后備用。

雙(shuang)罐式自動(dong)反(fan)(fan)沖(chong)洗(xi)過(guo)濾器(qi)反(fan)(fan)沖(chong)洗(xi)再(zai)生(sheng)操作(zuo)是(shi)利用一定(ding)壓(ya)力的氮(dan)(dan)氣(qi)產生(sheng)一股反(fan)(fan)向(xiang)液流(liu)沖(chong)擊，充分去除濾芯(xin)表面附著的濾餅并全部(bu)排出罐外(wai)。并且考(kao)慮到蠟油(you)密度大、黏度高(gao)，雙(shuang)罐式自動(dong)反(fan)(fan)沖(chong)洗(xi)過(guo)濾器(qi)引入(ru)柴油(you)作(zuo)為浸泡(pao)液體，在氮(dan)(dan)氣(qi)反(fan)(fan)沖(chong)洗(xi)前，設置(zhi)了(le)柴油(you)浸泡(pao)過(guo)程，即在蠟油(you)正常反(fan)(fan)沖(chong)洗(xi)后，注入(ru)柴油(you)浸泡(pao)濾芯(xin)一定(ding)時間，再(zai)引入(ru)氮(dan)(dan)氣(qi)將浸泡(pao)油(you)排盡。