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先導式REXROTH液控單向閥全新進口
先導式REXROTH液控單向閥全新進口REXROTH力士樂疊加式液控(kong)單向閥(fa)的(de)(de)構造(zao)類型很(hen)多,以(yi)往常見(jian)的(de)(de)有薄膜式、內(nei)彈簧活(huo)塞式等。減壓(ya)閥(fa)的(de)(de)基(ji)本作用原理是靠閥(fa)內(nei)流道對水(shui)流的(de)(de)局部阻力降低水(shui)壓(ya),水(shui)壓(ya)降的(de)(de)范(fan)圍由連接閥(fa)瓣(ban)的(de)(de)薄膜或活(huo)塞兩側(ce)的(de)(de)進出口水(shui)壓(ya)差自動調節。
先導式REXROTH液控單向閥全新進口
REXROTH力士樂疊加式液控單向閥(fa)的(de)(de)(de)(de)(de)構(gou)造(zao)類(lei)型很多,以往(wang)常(chang)(chang)見的(de)(de)(de)(de)(de)有薄(bo)膜式、內(nei)彈簧活塞(sai)(sai)式等(deng)。減(jian)(jian)(jian)壓(ya)(ya)(ya)(ya)閥(fa)的(de)(de)(de)(de)(de)基(ji)本作(zuo)用原(yuan)(yuan)(yuan)理是(shi)(shi)靠閥(fa)內(nei)流道(dao)對(dui)水(shui)流的(de)(de)(de)(de)(de)局(ju)部阻力降低(di)水(shui)壓(ya)(ya)(ya)(ya),水(shui)壓(ya)(ya)(ya)(ya)降的(de)(de)(de)(de)(de)范(fan)圍由連(lian)接(jie)閥(fa)瓣的(de)(de)(de)(de)(de)薄(bo)膜或活塞(sai)(sai)兩(liang)側的(de)(de)(de)(de)(de)進(jin)(jin)出(chu)口(kou)水(shui)壓(ya)(ya)(ya)(ya)差自動(dong)調(diao)(diao)節(jie)。近年來又出(chu)現一些新(xin)型減(jian)(jian)(jian)壓(ya)(ya)(ya)(ya)閥(fa),如(ru)定比(bi)(bi)式減(jian)(jian)(jian)壓(ya)(ya)(ya)(ya)閥(fa),其構(gou)造(zao)原(yuan)(yuan)(yuan)理如(ru)圖(tu)14.2-2所(suo)示。定比(bi)(bi)減(jian)(jian)(jian)壓(ya)(ya)(ya)(ya)原(yuan)(yuan)(yuan)理是(shi)(shi)利(li)用閥(fa)體中浮動(dong)活塞(sai)(sai)的(de)(de)(de)(de)(de)水(shui)壓(ya)(ya)(ya)(ya)比(bi)(bi)控制,進(jin)(jin)出(chu)口(kou)端減(jian)(jian)(jian)壓(ya)(ya)(ya)(ya)比(bi)(bi)與進(jin)(jin)出(chu)口(kou)側活塞(sai)(sai)面積(ji)比(bi)(bi)成反比(bi)(bi)。這種減(jian)(jian)(jian)壓(ya)(ya)(ya)(ya)閥(fa)工(gong)作(zuo)平穩無振動(dong);閥(fa)體內(nei)無彈簧,故無彈簧銹蝕、金屬疲勞失效(xiao)之(zhi)慮;密封性能良好不(bu)滲漏,因而既減(jian)(jian)(jian)動(dong)壓(ya)(ya)(ya)(ya)(水(shui)流動(dong)時(shi))又減(jian)(jian)(jian)靜(jing)壓(ya)(ya)(ya)(ya)(流量為(wei)0時(shi));特(te)別是(shi)(shi)在減(jian)(jian)(jian)壓(ya)(ya)(ya)(ya)的(de)(de)(de)(de)(de)同時(shi)不(bu)影響水(shui)流量。 減(jian)(jian)(jian)壓(ya)(ya)(ya)(ya)閥(fa)通常(chang)(chang)有DN50~DN100等(deng)多種規格,閥(fa)前(qian)、后的(de)(de)(de)(de)(de)工(gong)作(zuo)壓(ya)(ya)(ya)(ya)力分別為(wei)<1MPa和(he)0.1~0.5MPa,調(diao)(diao)壓(ya)(ya)(ya)(ya)范(fan)圍誤差為(wei)±5%~10%。 應該看到,水(shui)流通過減(jian)(jian)(jian)壓(ya)(ya)(ya)(ya)閥(fa)雖(sui)有很大的(de)(de)(de)(de)(de)水(shui)頭損失,但由于(yu)減(jian)(jian)(jian)少了水(shui)的(de)(de)(de)(de)(de)浪費并使系統(tong)(tong)流量分布合理、改善了系統(tong)(tong)布局(ju)與工(gong)況(kuang),因此總體上講(jiang)仍(reng)是(shi)(shi)節(jie)能的(de)(de)(de)(de)(de)。
REXROTH力士樂單向閥示例型號:
R900596764 DR 10-4-5X/315Y
R900596766 DR 10-5-5X/100Y
R900596768 DB 20-2-5X/315XY
R900596814 DR 30-5-5X/315YM
R900596815 DR 20-4-5X/100YM
R900596823 DR 10-4-5X/200YM
R900596858 DZ 20-2-5X/200
R900596863 DZ 20-2-5X/200Y
R900596883 DR 10-5-5X/315Y
R900596905 ZDB 10 VP1-4X/100V
R900596906 DZ 30-2-5X/200
R900596908 DA 10-2-5X/315-10
R900596930 DB 10-2-5X/100X
R900596961 DR 30-4-5X/315Y
REXROTH力(li)士樂疊加閥上的先導(dao)式單向閥特征
用于(yu)垂(chui)直疊加的疊加閥
油口安裝面符(fu)合(he) DIN 24340 形(xing)式 A(不帶定位孔)
油口(kou)安裝面符合 ISO 4401-03-02-0-05(帶定位孔)
用于一(yi)個(ge)或兩(liang)個(ge)執行機構油口(kou)的(de)無泄漏阻塞,可選
具有多(duo)種開(kai)啟壓(ya)力,可選(請參(can)閱訂貨代碼)
帶預開(kai)口,可(ke)選
單向閥安裝套件可單獨使(shi)用
可(ke)應(ying)要求(qiu)提供特(te)殊型(xing)號
先導式REXROTH液控單向閥全新進口