WETIEN電磁溢流閥DBW10B/DBW10A/DBW20B/液壓電磁溢t流閥DB
液壓系統(tǒng)的過(guò)濾
過(guò)濾在液壓系統(tǒng)中是必不可少的,因爲(wèi)它是控制油液污染的一個(gè)重要手段。通過(guò)過(guò)濾,可防止切屑和其他污染粒子的侵入,并清除液壓系統(tǒng)中已有的或不斷産生的污染顆粒和磨損顆粒,維持液壓元件所允許的污染程度(污染敏感度)。當(dāng)前研制各種類型的高教精密濾油器和探求特佳的過(guò)濾方式,以較低的總費(fèi)用提供保證元件有足夠防護(hù)能力的低過(guò)濾級(jí)已成爲(wèi)過(guò)濾方面的重要話題。
液壓系統(tǒng)清洗與過(guò)濾的幾點(diǎn)說(shuō)明
①過(guò)濾時(shí)如能增大過(guò)濾面積,反而經(jīng)濟(jì);單獨(dú)設(shè)置過(guò)濾回路,清洗效果較好;回路中安裝加熱器,可以提高清洗效果。
一般情況下,爲(wèi)了進(jìn)行有效清洗,可采用增加油溫、增加流量、用低黏度油、用高比重油、用脈沖液流和使用系統(tǒng)作振動(dòng)沖洗等措施。小流量室溫下清洗時(shí),一般效果較差。
②粗濾油器與精濾油器串聯(lián)組合很不經(jīng)濟(jì)。
③系統(tǒng)中對(duì)污染敏感高的元件(如伺服元件),最好能裝設(shè)輔助過(guò)濾器,或單獨(dú)卸下專門清洗。
④沖洗過(guò)程中還應(yīng)該注意:油箱要封閉,減少現(xiàn)場(chǎng)空氣中顆粒進(jìn)入油箱的機(jī)會(huì);向油箱中加入沖洗油時(shí)應(yīng)使用帶過(guò)濾器的加油小車,以濾除桶裝油中的污染物;更換濾芯時(shí)暫停沖洗泵,注意不要帶人雜質(zhì);對(duì)排空和排污要定期進(jìn)行,以確保系統(tǒng)充滿,并及時(shí)排出氣和污染物;在沖洗的前期,油中水分蒸發(fā)很重要,在沖洗油箱上應(yīng)有蒸汽逸出的窗口;沖洗臺(tái)格后再抽出沖洗油、管線。使用前要注意保護(hù),以免污染物進(jìn)入系統(tǒng)。
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