BOSCH力士樂電磁換向閥廣東總經銷BOSCH力(li)士樂電(dian)磁(ci)(ci)換向閥(fa)是(shi)控(kong)制元件(jian)，主(zhu)要(yao)用來控(kong)制氣缸(gang)。也有(you)分(fen)析儀器或(huo)者別的噴(pen)槍用來直接控(kong)制氣體。電(dian)磁(ci)(ci)閥(fa)分(fen)為氣動、液壓兩種(zhong)，工作(zuo)方(fang)式都是(shi)一樣(yang)的，只是(shi)介質不一樣(yang)。工作(zuo)原理就是(shi)在一個閥(fa)體上開幾個孔，然后用電(dian)磁(ci)(ci)感應(ying)控(kong)制閥(fa)桿的運動來控(kong)制堵(du)哪個孔，或(huo)者讓哪個孔出氣。

BOSCH力士樂電(dian)磁換(huan)向閥(fa)的基本(ben)構成(cheng)為(wei)殼體 (1)、一個或兩個電(dian)子線圈 (2)、控制閥(fa)芯 (3) 和復位彈簧 (4)。

在(zai)斷電(dian)情況下，控制閥芯 (3) 由復位(wei)彈簧 (4) 固(gu)定在(zai)中心位(wei)置或初始位(wei)置（型(xing)號“O"除外）。

當濕式插腳(jiao)電(dian)子線圈 (2) 通電(dian)時(shi)，控制閥(fa)芯 (3) 從靜止位置移(yi)所需(xu)的終端位置。這(zhe)樣就可以根據所選(xuan)符號釋放所需(xu)流(liu)向(xiang)。

在關(guan)閉(bi)電子(zi)線圈(quan) (2) 后，控制閥(fa)芯 (3) 將(jiang)被推回(hui)中心(xin)位置(zhi)(zhi)或(huo)初始(shi)位置(zhi)(zhi)（除(chu)了帶“OF"定位器的閥(fa)和不帶“O"型彈簧(huang)的閥(fa)）。

手(shou)動(dong)應急操作 (6) 允(yun)許在不給線圈通電的情況下(xia)手(shou)動(dong)切換閥。

BOSCH力士樂(le)電(dian)磁換(huan)向閥(fa)工作原理：

（1）六通(tong)閥的閥體(ti)由(you)隔板(ban)分成兩腔，每腔都有3個通(tong)道，中間為(wei)進油口(kou)，兩端(duan)為(wei)出油口(kou)。閥體(ti)為(wei)碳鋼板(ban)焊結(jie)構(gou)，體(ti)積小，質量(liang)輕，結(jie)構(gou)緊(jin)湊，提高了(le)材料的利(li)用率(lv)，縮(suo)短了(le)生(sheng)產周期，降低了(le)成本。密(mi)(mi)封面堆焊不銹(xiu)鋼，防銹(xiu)耐(nai)腐蝕，密(mi)(mi)封面經(jing)過精加(jia)工(gong)后拋(pao)光研磨(mo)，表(biao)面粗糙度Ra≤0.8μm。

（2）六(liu)通(tong)閥(fa)有(you)兩(liang)(liang)組(zu)(zu)密(mi)(mi)(mi)封(feng)(feng)(feng)組(zu)(zu)件(jian)。每組(zu)(zu)密(mi)(mi)(mi)封(feng)(feng)(feng)組(zu)(zu)件(jian)由閥(fa)瓣(ban)(ban)、密(mi)(mi)(mi)封(feng)(feng)(feng)圈(quan)(quan)、調(diao)整(zheng)塊、調(diao)節螺(luo)釘、夾板(ban)和(he)螺(luo)栓組(zu)(zu)成。閥(fa)瓣(ban)(ban)為碳鋼板(ban)焊件(jian)，設有(you)加強筋，即增加閥(fa)瓣(ban)(ban)強度又起導向作用(yong)，保證每組(zu)(zu)閥(fa)瓣(ban)(ban)間的(de)同軸(zhou)度。閥(fa)瓣(ban)(ban)上鑲嵌(qian)聚(ju)氨脂橡膠圈(quan)(quan)，該材料具有(you)耐油、耐磨損、性(xing)能(neng)穩(wen)定(ding)、密(mi)(mi)(mi)封(feng)(feng)(feng)良(liang)好(hao)和(he)使用(yong)壽(shou)命長的(de)特點。在凸輪的(de)作用(yong)下，密(mi)(mi)(mi)封(feng)(feng)(feng)圈(quan)(quan)的(de)球(qiu)面與(yu)閥(fa)體密(mi)(mi)(mi)封(feng)(feng)(feng)面相接觸產生(sheng)擠壓(ya)彈性(xing)變形，達到(dao)密(mi)(mi)(mi)封(feng)(feng)(feng)效果(guo)。調(diao)整(zheng)塊和(he)調(diao)節螺(luo)釘在兩(liang)(liang)組(zu)(zu)密(mi)(mi)(mi)封(feng)(feng)(feng)組(zu)(zu)件(jian)不能(neng)同步(bu)到(dao)位時可起調(diao)整(zheng)作用(yong)，確(que)保各通(tong)道密(mi)(mi)(mi)封(feng)(feng)(feng)性(xing)能(neng)同步(bu)到(dao)位1夾板(ban) 2螺(luo)栓 3調(diao)整(zheng)塊 4閥(fa)瓣(ban)(ban) 5密(mi)(mi)(mi)封(feng)(feng)(feng)圈(quan)(quan) 6調(diao)整(zheng)螺(luo)釘（3）閥(fa)桿與(yu)閥(fa)體隔板(ban)和(he)上閥(fa)蓋間的(de)軸(zhou)向密(mi)(mi)(mi)封(feng)(feng)(feng)采(cai)用(yong)O形圈(quan)(quan)。

（4）閥(fa)體隔板及上閥(fa)蓋軸孔部位鑲有銅套，可(ke)減小與(yu)O形(xing)圈間的(de)摩(mo)擦力矩，密封(feng)組件開(kai)啟與(yu)關閉靈活，操作(zuo)力矩小。

（5）上閥蓋設有指(zhi)(zhi)示牌(pai)及限位(wei)螺釘(ding)，閥桿上安裝指(zhi)(zhi)針，明確(que)指(zhi)(zhi)示各通(tong)道(dao)的接通(tong)狀況，易于操作。

BOSCH力(li)士樂電(dian)磁換(huan)(huan)向(xiang)(xiang)閥(fa)(fa)具有(you)多向(xiang)(xiang)可(ke)(ke)調的(de)通道，可(ke)(ke)適時(shi)(shi)(shi)(shi)改變流(liu)體(ti)流(liu)向(xiang)(xiang)。可(ke)(ke)分為手動(dong)(dong)(dong)(dong)(dong)換(huan)(huan)向(xiang)(xiang)閥(fa)(fa)、電(dian)磁換(huan)(huan)向(xiang)(xiang)閥(fa)(fa)、電(dian)液(ye)換(huan)(huan)向(xiang)(xiang)閥(fa)(fa)等。工(gong)(gong)作(zuo)(zuo)時(shi)(shi)(shi)(shi)借(jie)著閥(fa)(fa)外(wai)(wai)的(de)驅動(dong)(dong)(dong)(dong)(dong)傳動(dong)(dong)(dong)(dong)(dong)機構轉動(dong)(dong)(dong)(dong)(dong)驅動(dong)(dong)(dong)(dong)(dong)軸，帶動(dong)(dong)(dong)(dong)(dong)搖拐臂，啟動(dong)(dong)(dong)(dong)(dong)閥(fa)(fa)板，使工(gong)(gong)作(zuo)(zuo)流(liu)體(ti)時(shi)(shi)(shi)(shi)而從左(zuo)入口(kou)通向(xiang)(xiang)閥(fa)(fa)的(de)下部(bu)出(chu)口(kou)，時(shi)(shi)(shi)(shi)而從右入口(kou)變換(huan)(huan)通向(xiang)(xiang)下部(bu)出(chu)口(kou)，實現(xian)了周期變換(huan)(huan)流(liu)向(xiang)(xiang)的(de)目的(de)。這(zhe)種變換(huan)(huan)閥(fa)(fa)在石油、化工(gong)(gong)生產中(zhong)(zhong)有(you)著廣(guang)泛的(de)應用，在合(he)成氨造氣(qi)系統中(zhong)(zhong)為常用。此(ci)外(wai)(wai)，換(huan)(huan)向(xiang)(xiang)閥(fa)(fa)還可(ke)(ke)作(zuo)(zuo)成閥(fa)(fa)瓣式的(de)結構，多用于較(jiao)小流(liu)量的(de)場合(he)。工(gong)(gong)作(zuo)(zuo)時(shi)(shi)(shi)(shi)只需(xu)轉動(dong)(dong)(dong)(dong)(dong)手輪通過(guo)閥(fa)(fa)瓣來變換(huan)(huan)工(gong)(gong)作(zuo)(zuo)流(liu)體(ti)的(de)流(liu)向(xiang)(xiang)。

德國力(li)士(shi)樂Rexroth三位(wei)(wei)四通(tong)(tong)換(huan)(huan)(huan)(huan)(huan)(huan)(huan)(huan)向(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)閥(fa)(fa)(fa)(fa)(fa)(fa)(fa)(fa)應用(yong)(yong)手(shou)動(dong)(dong)(dong)(dong)(dong)(dong)杠桿回(hui)轉(zhuan)(zhuan)(zhuan)變(bian)(bian)閥(fa)(fa)(fa)(fa)(fa)(fa)(fa)(fa)芯(xin)(xin)地位(wei)(wei)名隱換(huan)(huan)(huan)(huan)(huan)(huan)(huan)(huan)向(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)。分(fen)彈(dan)簧(huang)主動(dong)(dong)(dong)(dong)(dong)(dong)復位(wei)(wei)跟(gen)彈(dan)簧(huang)鋼珠定位(wei)(wei)二種。靈活換(huan)(huan)(huan)(huan)(huan)(huan)(huan)(huan)向(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)閥(fa)(fa)(fa)(fa)(fa)(fa)(fa)(fa)又稱言程閥(fa)(fa)(fa)(fa)(fa)(fa)(fa)(fa)，重要用(yong)(yong)去節(jie)制機械運動(dong)(dong)(dong)(dong)(dong)(dong)部(bu)件(jian)的(de)(de)(de)(de)(de)(de)止(zhi)程， 電(dian)(dian)(dian)(dian)磁(ci)換(huan)(huan)(huan)(huan)(huan)(huan)(huan)(huan)向(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)閥(fa)(fa)(fa)(fa)(fa)(fa)(fa)(fa)還幫于裝(zhuang)置(zhi)在(zai)工作(zuo)臺上的(de)(de)(de)(de)(de)(de)檔鐵(tie)或凹(ao)輪(lun)迫使閥(fa)(fa)(fa)(fa)(fa)(fa)(fa)(fa)芯(xin)(xin)運動(dong)(dong)(dong)(dong)(dong)(dong)，從而(er)掌握液(ye)流(liu)方向(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)。電(dian)(dian)(dian)(dian)磁(ci)換(huan)(huan)(huan)(huan)(huan)(huan)(huan)(huan)向(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)閥(fa)(fa)(fa)(fa)(fa)(fa)(fa)(fa)弊用(yong)(yong)電(dian)(dian)(dian)(dian)磁(ci)鐵(tie)的(de)(de)(de)(de)(de)(de)通(tong)(tong)電(dian)(dian)(dian)(dian)呼(hu)分(fen)取(qu)斷電(dian)(dian)(dian)(dian)開釋(shi)(shi)而(er)間(jian)接推進(jin)閥(fa)(fa)(fa)(fa)(fa)(fa)(fa)(fa)芯(xin)(xin)回(hui)節(jie)制液(ye)流(liu)方向(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)。它非電(dian)(dian)(dian)(dian)氣解(jie)統和(he)(he)液(ye)壓(ya)(ya)(ya)(ya)(ya)系統之(zhi)間(jian)的(de)(de)(de)(de)(de)(de)疑(yi)號轉(zhuan)(zhuan)(zhuan)換(huan)(huan)(huan)(huan)(huan)(huan)(huan)(huan)元件(jian)。所示替二位(wei)(wei)三通(tong)(tong)交換(huan)(huan)(huan)(huan)(huan)(huan)(huan)(huan)電(dian)(dian)(dian)(dian)磁(ci)閥(fa)(fa)(fa)(fa)(fa)(fa)(fa)(fa)構造。電(dian)(dian)(dian)(dian)磁(ci)換(huan)(huan)(huan)(huan)(huan)(huan)(huan)(huan)向(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)閥(fa)(fa)(fa)(fa)(fa)(fa)(fa)(fa)當電(dian)(dian)(dian)(dian)磁(ci)鐵(tie)斷電(dian)(dian)(dian)(dian)開釋(shi)(shi)時(shi)，彈(dan)簧(huang)推進(jin)閥(fa)(fa)(fa)(fa)(fa)(fa)(fa)(fa)芯(xin)(xin)復位(wei)(wei)。液(ye)動(dong)(dong)(dong)(dong)(dong)(dong)換(huan)(huan)(huan)(huan)(huan)(huan)(huan)(huan)向(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)閥(fa)(fa)(fa)(fa)(fa)(fa)(fa)(fa)應用(yong)(yong)把持油(you)(you)(you)(you)路(lu)(lu)的(de)(de)(de)(de)(de)(de)壓(ya)(ya)(ya)(ya)(ya)力(li)油(you)(you)(you)(you)去轉(zhuan)(zhuan)(zhuan)變(bian)(bian)閥(fa)(fa)(fa)(fa)(fa)(fa)(fa)(fa)芯(xin)(xin)位(wei)(wei)置(zhi)的(de)(de)(de)(de)(de)(de)換(huan)(huan)(huan)(huan)(huan)(huan)(huan)(huan)向(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)閥(fa)(fa)(fa)(fa)(fa)(fa)(fa)(fa)。閥(fa)(fa)(fa)(fa)(fa)(fa)(fa)(fa)芯(xin)(xin)非由其二端稀封腔外油(you)(you)(you)(you)液(ye)的(de)(de)(de)(de)(de)(de)壓(ya)(ya)(ya)(ya)(ya)差回(hui)挪(nuo)動(dong)(dong)(dong)(dong)(dong)(dong)的(de)(de)(de)(de)(de)(de)。當壓(ya)(ya)(ya)(ya)(ya)力(li)油(you)(you)(you)(you)從K2入進(jin)滑(hua)閥(fa)(fa)(fa)(fa)(fa)(fa)(fa)(fa)左腔時(shi)，K1接通(tong)(tong)回(hui)油(you)(you)(you)(you)，閥(fa)(fa)(fa)(fa)(fa)(fa)(fa)(fa)芯(xin)(xin)向(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)右移動(dong)(dong)(dong)(dong)(dong)(dong)，使P和(he)(he)B相(xiang)(xiang)通(tong)(tong)，A和(he)(he)T相(xiang)(xiang)通(tong)(tong);當K1交通(tong)(tong)壓(ya)(ya)(ya)(ya)(ya)力(li)油(you)(you)(you)(you)，K2交通(tong)(tong)回(hui)油(you)(you)(you)(you)，閥(fa)(fa)(fa)(fa)(fa)(fa)(fa)(fa)芯(xin)(xin)向(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)左挪(nuo)動(dong)(dong)(dong)(dong)(dong)(dong)，使P和(he)(he)A相(xiang)(xiang)通(tong)(tong)，B和(he)(he)T相(xiang)(xiang)通(tong)(tong);當K1戰K2皆通(tong)(tong)回(hui)油(you)(you)(you)(you)時(shi)，閥(fa)(fa)(fa)(fa)(fa)(fa)(fa)(fa)芯(xin)(xin)回(hui)到兩(liang)頭位(wei)(wei)置(zhi)。電(dian)(dian)(dian)(dian)液(ye)換(huan)(huan)(huan)(huan)(huan)(huan)(huan)(huan)向(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)閥(fa)(fa)(fa)(fa)(fa)(fa)(fa)(fa)由電(dian)(dian)(dian)(dian)磁(ci)澀閥(fa)(fa)(fa)(fa)(fa)(fa)(fa)(fa)跟(gen)液(ye)動(dong)(dong)(dong)(dong)(dong)(dong)滑(hua)閥(fa)(fa)(fa)(fa)(fa)(fa)(fa)(fa)組成。電(dian)(dian)(dian)(dian)磁(ci)閥(fa)(fa)(fa)(fa)(fa)(fa)(fa)(fa)伏后導(dao)(dao)息用(yong)(yong)， 電(dian)(dian)(dian)(dian)磁(ci)換(huan)(huan)(huan)(huan)(huan)(huan)(huan)(huan)向(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)閥(fa)(fa)(fa)(fa)(fa)(fa)(fa)(fa)能(neng)(neng)夠(gou)轉(zhuan)(zhuan)(zhuan)變(bian)(bian)把持液(ye)淌方向(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)，從而(er)改變(bian)(bian)液(ye)動(dong)(dong)(dong)(dong)(dong)(dong)滑(hua)閥(fa)(fa)(fa)(fa)(fa)(fa)(fa)(fa)閥(fa)(fa)(fa)(fa)(fa)(fa)(fa)(fa)芯(xin)(xin)的(de)(de)(de)(de)(de)(de)地位(wei)(wei)。用(yong)(yong)于大西型液(ye)壓(ya)(ya)(ya)(ya)(ya)裝(zhuang)備外。手(shou)動(dong)(dong)(dong)(dong)(dong)(dong)換(huan)(huan)(huan)(huan)(huan)(huan)(huan)(huan)向(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)閥(fa)(fa)(fa)(fa)(fa)(fa)(fa)(fa)經長時(shi)間(jian)使用(yong)(yong)后易出現閥(fa)(fa)(fa)(fa)(fa)(fa)(fa)(fa)芯(xin)(xin)密封圈磨損(sun)(sun)、閥(fa)(fa)(fa)(fa)(fa)(fa)(fa)(fa)桿和(he)(he)閥(fa)(fa)(fa)(fa)(fa)(fa)(fa)(fa)座損(sun)(sun)傷的(de)(de)(de)(de)(de)(de)現象,導(dao)(dao)致(zhi)閥(fa)(fa)(fa)(fa)(fa)(fa)(fa)(fa)內氣體泄漏,閥(fa)(fa)(fa)(fa)(fa)(fa)(fa)(fa)的(de)(de)(de)(de)(de)(de)動(dong)(dong)(dong)(dong)(dong)(dong)作(zuo)緩慢或不(bu)(bu)(bu)能(neng)(neng)正常(chang)(chang)換(huan)(huan)(huan)(huan)(huan)(huan)(huan)(huan)向(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)等故障(zhang)(zhang)。此(ci)時(shi),應更(geng)(geng)換(huan)(huan)(huan)(huan)(huan)(huan)(huan)(huan)密封圈、閥(fa)(fa)(fa)(fa)(fa)(fa)(fa)(fa)桿和(he)(he)閥(fa)(fa)(fa)(fa)(fa)(fa)(fa)(fa)座,或將換(huan)(huan)(huan)(huan)(huan)(huan)(huan)(huan)向(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)閥(fa)(fa)(fa)(fa)(fa)(fa)(fa)(fa)換(huan)(huan)(huan)(huan)(huan)(huan)(huan)(huan)新，換(huan)(huan)(huan)(huan)(huan)(huan)(huan)(huan)向(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)閥(fa)(fa)(fa)(fa)(fa)(fa)(fa)(fa)不(bu)(bu)(bu)能(neng)(neng)換(huan)(huan)(huan)(huan)(huan)(huan)(huan)(huan)向(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)或換(huan)(huan)(huan)(huan)(huan)(huan)(huan)(huan)向(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)動(dong)(dong)(dong)(dong)(dong)(dong)作(zuo)緩慢,一(yi)般(ban)是(shi)(shi)因潤(run)滑(hua)不(bu)(bu)(bu)良、彈(dan)簧(huang)被卡住(zhu)或損(sun)(sun)壞、油(you)(you)(you)(you)污或雜(za)質卡住(zhu)滑(hua)動(dong)(dong)(dong)(dong)(dong)(dong)部(bu)分(fen)等原(yuan)因引起的(de)(de)(de)(de)(de)(de)。對此(ci),應先(xian)(xian)檢查油(you)(you)(you)(you)霧器的(de)(de)(de)(de)(de)(de)工作(zuo)是(shi)(shi)否(fou)(fou)正常(chang)(chang);潤(run)滑(hua)油(you)(you)(you)(you)的(de)(de)(de)(de)(de)(de)粘度是(shi)(shi)否(fou)(fou)合適。必要時(shi),應更(geng)(geng)換(huan)(huan)(huan)(huan)(huan)(huan)(huan)(huan)潤(run)滑(hua)油(you)(you)(you)(you),清洗換(huan)(huan)(huan)(huan)(huan)(huan)(huan)(huan)向(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)閥(fa)(fa)(fa)(fa)(fa)(fa)(fa)(fa)的(de)(de)(de)(de)(de)(de)滑(hua)動(dong)(dong)(dong)(dong)(dong)(dong)部(bu)分(fen),或更(geng)(geng)換(huan)(huan)(huan)(huan)(huan)(huan)(huan)(huan)彈(dan)簧(huang)和(he)(he)換(huan)(huan)(huan)(huan)(huan)(huan)(huan)(huan)向(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)閥(fa)(fa)(fa)(fa)(fa)(fa)(fa)(fa)。若電(dian)(dian)(dian)(dian)磁(ci)先(xian)(xian)導(dao)(dao)閥(fa)(fa)(fa)(fa)(fa)(fa)(fa)(fa)的(de)(de)(de)(de)(de)(de)進(jin)、排氣孔被油(you)(you)(you)(you)泥等雜(za)物堵塞(sai),封閉不(bu)(bu)(bu)嚴,活動(dong)(dong)(dong)(dong)(dong)(dong)鐵(tie)芯(xin)(xin)被卡死,電(dian)(dian)(dian)(dian)路(lu)(lu)有(you)故障(zhang)(zhang)等,均可導(dao)(dao)致(zhi)換(huan)(huan)(huan)(huan)(huan)(huan)(huan)(huan)向(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)閥(fa)(fa)(fa)(fa)(fa)(fa)(fa)(fa)不(bu)(bu)(bu)能(neng)(neng)正常(chang)(chang)換(huan)(huan)(huan)(huan)(huan)(huan)(huan)(huan)向(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)。應清洗先(xian)(xian)導(dao)(dao)閥(fa)(fa)(fa)(fa)(fa)(fa)(fa)(fa)及(ji)活動(dong)(dong)(dong)(dong)(dong)(dong)鐵(tie)芯(xin)(xin)上的(de)(de)(de)(de)(de)(de)油(you)(you)(you)(you)泥和(he)(he)雜(za)質。而(er)電(dian)(dian)(dian)(dian)路(lu)(lu)故障(zhang)(zhang)一(yi)般(ban)又分(fen)為控制電(dian)(dian)(dian)(dian)路(lu)(lu)故障(zhang)(zhang)和(he)(he)電(dian)(dian)(dian)(dian)磁(ci)線(xian)圈故障(zhang)(zhang)兩(liang)類。在(zai)檢查電(dian)(dian)(dian)(dian)路(lu)(lu)故障(zhang)(zhang)前(qian),應先(xian)(xian)將換(huan)(huan)(huan)(huan)(huan)(huan)(huan)(huan)向(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)閥(fa)(fa)(fa)(fa)(fa)(fa)(fa)(fa)的(de)(de)(de)(de)(de)(de)手(shou)動(dong)(dong)(dong)(dong)(dong)(dong)旋鈕轉(zhuan)(zhuan)(zhuan)動(dong)(dong)(dong)(dong)(dong)(dong)幾下,看(kan)換(huan)(huan)(huan)(huan)(huan)(huan)(huan)(huan)向(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)閥(fa)(fa)(fa)(fa)(fa)(fa)(fa)(fa)在(zai)額定的(de)(de)(de)(de)(de)(de)氣壓(ya)(ya)(ya)(ya)(ya)下是(shi)(shi)否(fou)(fou)能(neng)(neng)正常(chang)(chang)換(huan)(huan)(huan)(huan)(huan)(huan)(huan)(huan)向(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)(xiang),若能(neng)(neng)正常(chang)(chang)換(huan)(huan)(huan)(huan)(huan)(huan)(huan)(huan)向(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)(xiang),則是(shi)(shi)電(dian)(dian)(dian)(dian)路(lu)(lu)有(you)故障(zhang)(zhang)。檢查時(shi),可用(yong)(yong)儀表測(ce)量電(dian)(dian)(dian)(dian)磁(ci)線(xian)圈的(de)(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)(ya),看(kan)是(shi)(shi)否(fou)(fou)達到了(le)額定電(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)(ya),如(ru)果電(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)(ya)過低,應進(jin)一(yi)步檢查控制電(dian)(dian)(dian)(dian)路(lu)(lu)中(zhong)的(de)(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)源和(he)(he)相(xiang)(xiang)關聯(lian)的(de)(de)(de)(de)(de)(de)行程開關電(dian)(dian)(dian)(dian)路(lu)(lu)。如(ru)果在(zai)額定電(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)(ya)下換(huan)(huan)(huan)(huan)(huan)(huan)(huan)(huan)向(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)閥(fa)(fa)(fa)(fa)(fa)(fa)(fa)(fa)不(bu)(bu)(bu)能(neng)(neng)正常(chang)(chang)換(huan)(huan)(huan)(huan)(huan)(huan)(huan)(huan)向(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)(xiang),則應檢查電(dian)(dian)(dian)(dian)磁(ci)線(xian)圈的(de)(de)(de)(de)(de)(de)接頭（插頭）是(shi)(shi)否(fou)(fou)松動(dong)(dong)(dong)(dong)(dong)(dong)或接觸(chu)不(bu)(bu)(bu)實。方法是(shi)(shi),拔下插頭,測(ce)量線(xian)圈的(de)(de)(de)(de)(de)(de)阻值(zhi),如(ru)果阻值(zhi)太(tai)大或太(tai)小,說明電(dian)(dian)(dian)(dian)磁(ci)線(xian)圈已損(sun)(sun)壞,應更(geng)(geng)換(huan)(huan)(huan)(huan)(huan)(huan)(huan)(huan)。

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