液壓系統過濾器及使用注意事項
油過(guo)(guo)濾(lv)(lv)(lv)器按其過(guo)(guo)濾(lv)(lv)(lv)精(jing)(jing)度(濾(lv)(lv)(lv)去(qu)雜(za)質的顆粒大小)的不(bu)同,有粗過(guo)(guo)濾(lv)(lv)(lv)器、普通過(guo)(guo)濾(lv)(lv)(lv)器、精(jing)(jing)密(mi)過(guo)(guo)濾(lv)(lv)(lv)器和(he)特(te)精(jing)(jing)過(guo)(guo)濾(lv)(lv)(lv)器四(si)種,它(ta)們分別(bie)能(neng)濾(lv)(lv)(lv)去(qu)大于100μm、10~100μm、5~10μm和(he)1~5μm大小的雜(za)質。注(zhu)意事(shi)項:選用濾(lv)(lv)(lv)油器時,要考慮(lv)下列幾點:
(1)過(guo)濾(lv)(lv)(lv)(lv)(lv)(lv)(lv)精(jing)度(du)(du)(du)應滿足預定(ding)要求。(2)能(neng)在(zai)較長時間(jian)內(nei)保(bao)持(chi)(chi)足夠的(de)(de)(de)通(tong)流能(neng)力(li)。 (3)濾(lv)(lv)(lv)(lv)(lv)(lv)(lv)心具有(you)足夠的(de)(de)(de)強(qiang)度(du)(du)(du),不因(yin)液(ye)壓(ya)(ya)(ya)的(de)(de)(de)作(zuo)用而損壞(huai)。 (4)濾(lv)(lv)(lv)(lv)(lv)(lv)(lv)心抗腐蝕性能(neng)好(hao),能(neng)在(zai)規定(ding)的(de)(de)(de)溫度(du)(du)(du)下(xia)持(chi)(chi)久地工(gong)作(zuo)。 (5)濾(lv)(lv)(lv)(lv)(lv)(lv)(lv)心清洗或(huo)更換簡(jian)便。 因(yin)此(ci)(ci),濾(lv)(lv)(lv)(lv)(lv)(lv)(lv)油(you)(you)(you)器(qi)應根據液(ye)壓(ya)(ya)(ya)系(xi)統(tong)(tong)的(de)(de)(de)技(ji)術要求,按過(guo)濾(lv)(lv)(lv)(lv)(lv)(lv)(lv)精(jing)度(du)(du)(du)、通(tong)流能(neng)力(li)、工(gong)作(zuo)壓(ya)(ya)(ya)力(li)、油(you)(you)(you)液(ye)粘度(du)(du)(du)、工(gong)作(zuo)溫度(du)(du)(du)等(deng)條(tiao)件(jian)選(xuan)定(ding)其型(xing)(xing)號(hao)。 2.安裝(zhuang)(zhuang)濾(lv)(lv)(lv)(lv)(lv)(lv)(lv)油(you)(you)(you)器(qi)在(zai)液(ye)壓(ya)(ya)(ya)系(xi)統(tong)(tong)中的(de)(de)(de)安裝(zhuang)(zhuang)位置(zhi)通(tong)常有(you)以下(xia)幾(ji)種: (1)要裝(zhuang)(zhuang)在(zai)泵的(de)(de)(de)吸(xi)油(you)(you)(you)口處(chu): 泵的(de)(de)(de)吸(xi)油(you)(you)(you)路上(shang)一(yi)(yi)般都安裝(zhuang)(zhuang)有(you)表面(mian)型(xing)(xing)濾(lv)(lv)(lv)(lv)(lv)(lv)(lv)油(you)(you)(you)器(qi),目的(de)(de)(de)是濾(lv)(lv)(lv)(lv)(lv)(lv)(lv)去較大(da)的(de)(de)(de)雜質(zhi)微(wei)粒(li)以保(bao)護液(ye)壓(ya)(ya)(ya)泵,此(ci)(ci)外(wai)濾(lv)(lv)(lv)(lv)(lv)(lv)(lv)油(you)(you)(you)器(qi)的(de)(de)(de)過(guo)濾(lv)(lv)(lv)(lv)(lv)(lv)(lv)能(neng)力(li)應為泵流量的(de)(de)(de)兩倍以上(shang),壓(ya)(ya)(ya)力(li)損失小于0.02MPa。 (2)安裝(zhuang)(zhuang)在(zai)泵的(de)(de)(de)出口油(you)(you)(you)路上(shang): 此(ci)(ci)處(chu)安裝(zhuang)(zhuang)濾(lv)(lv)(lv)(lv)(lv)(lv)(lv)油(you)(you)(you)器(qi)的(de)(de)(de)目的(de)(de)(de)是用來(lai)濾(lv)(lv)(lv)(lv)(lv)(lv)(lv)除可(ke)能(neng)侵(qin)入閥類等(deng)元件(jian)的(de)(de)(de)污染物。其過(guo)濾(lv)(lv)(lv)(lv)(lv)(lv)(lv)精(jing)度(du)(du)(du)應為10~15μm,且(qie)能(neng)承受(shou)油(you)(you)(you)路上(shang)的(de)(de)(de)工(gong)作(zuo)壓(ya)(ya)(ya)力(li)和沖擊(ji)壓(ya)(ya)(ya)力(li),壓(ya)(ya)(ya)力(li)降(jiang)應小于0.35MPa。同(tong)時應安裝(zhuang)(zhuang) 安全閥以防(fang)濾(lv)(lv)(lv)(lv)(lv)(lv)(lv)油(you)(you)(you)器(qi)堵塞。 (3)安裝(zhuang)(zhuang)在(zai)系(xi)統(tong)(tong)的(de)(de)(de)回油(you)(you)(you)路上(shang):這種安裝(zhuang)(zhuang)起間(jian)接過(guo)濾(lv)(lv)(lv)(lv)(lv)(lv)(lv)作(zuo)用。一(yi)(yi)般與(yu)過(guo)濾(lv)(lv)(lv)(lv)(lv)(lv)(lv)器(qi)并連安裝(zhuang)(zhuang)一(yi)(yi)背(bei)壓(ya)(ya)(ya)閥,當過(guo)濾(lv)(lv)(lv)(lv)(lv)(lv)(lv)器(qi)堵塞達到(dao)一(yi)(yi)定(ding)壓(ya)(ya)(ya)力(li)值時,背(bei)壓(ya)(ya)(ya)閥打(da)開。 (4)安裝(zhuang)(zhuang)在(zai)系(xi)統(tong)(tong)分(fen)支油(you)(you)(you)路上(shang)。 (5)單獨(du)過(guo)濾(lv)(lv)(lv)(lv)(lv)(lv)(lv)系(xi)統(tong)(tong):大(da)型(xing)(xing)液(ye)壓(ya)(ya)(ya)系(xi)統(tong)(tong)可(ke)專(zhuan)設(she)一(yi)(yi)液(ye)壓(ya)(ya)(ya)泵和濾(lv)(lv)(lv)(lv)(lv)(lv)(lv)油(you)(you)(you)器(qi)組(zu)成獨(du)立過(guo)濾(lv)(lv)(lv)(lv)(lv)(lv)(lv)回路。 液(ye)壓(ya)(ya)(ya)系(xi)統(tong)(tong)中除了整個系(xi)統(tong)(tong)所需的(de)(de)(de)濾(lv)(lv)(lv)(lv)(lv)(lv)(lv)油(you)(you)(you)器(qi)外(wai),還(huan)常常在(zai)一(yi)(yi)些重要元件(jian)(如伺服閥、精(jing)密(mi)節流閥等(deng))的(de)(de)(de)前面(mian)單獨(du)安裝(zhuang)(zhuang)一(yi)(yi)個專(zhuan)用的(de)(de)(de)精(jing)濾(lv)(lv)(lv)(lv)(lv)(lv)(lv)油(you)(you)(you)器(qi)來(lai)確保(bao)它們(men)的(de)(de)(de)正常工(gong)作(zuo)。
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