DRE6-11/100MG24K4M
13641663729  

上海翊霈工業(yè)控制設(shè)備有限公司優(yōu)勢供應(yīng)國外

Fengdong Trade (Shanghai) Co., 

廣泛應(yīng)用于鋼鐵、冶金,、鋁行業(yè),、石油化工、航天,、船舶制造,、煤炭、水泥,、電力,、汽車、工程機(jī)械,、食品,、藥業(yè)、林業(yè),、紡織,、皮革、造紙等行業(yè)領(lǐng)域

比例閥采用閥芯+閥體結(jié)構(gòu),。伺服閥和伺服比例閥主要應(yīng)用在閉環(huán)控制系統(tǒng),，比例閥的驅(qū)鑫裝置是比例電磁鐵。
伺服閥的驅(qū)鑫裝置是力馬達(dá)或力矩馬達(dá).閥體兼作閥套,。
驅(qū)鑫裝置不同.所以近些年出現(xiàn)了比例伺服閥,。
比例閥一般zui高幾十Hz，伺服閥中位沒有死區(qū),，伺服閥對液壓油液的要求更高.性能參數(shù)不同,；否則容易堵塞，
用來控制流量和流向,，比例閥要求低一些.比例閥有中位死區(qū),；
比例閥和伺服閥的區(qū)別主要體現(xiàn)在以下幾點：
逐漸向伺服閥靠近，
比例換向閥屬于比例閥的一種,，滯環(huán),、中位死區(qū)、頻寬,、過濾精度等特性不同.閥的額定壓降不同,；比例換向閥具有與普通換向閥相似的中位機(jī)能，
而比例伺服閥性能介于伺服閥和比例閥之間,，因此應(yīng)用場合不同,，伺服閥和伺服比例閥采用閥芯+閥套的結(jié)構(gòu)。中位機(jī)能種類不同.其它結(jié)構(gòu)的比例閥主要應(yīng)用在開環(huán)控系統(tǒng)及閉環(huán)速度控制系統(tǒng),；因為比例閥的性能越來越好,；2伺服閥的頻響（響應(yīng)頻率）更高。閥芯結(jié)構(gòu)及加工精度不同.伺服閥與比例閥之間的差別并沒有嚴(yán)格的規(guī)定。
,，可以高達(dá)200Hz左右,，需要精過濾才行，而伺服閥中位機(jī)能只有O型（Rexroth產(chǎn)品的E型）,。

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力士樂比例閥DRE 6X-10/175MG24-8NZ4M
(0811 402 055)
4WRAE6W1-30-22/G24K31/F1V

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電液比例閥簡稱比例閥,。普通液壓閥只能通過預(yù)調(diào)的方式對液流的壓力、流量進(jìn)行定值控制,。但是當(dāng)設(shè)備機(jī)構(gòu)在工作過程中要求對液壓系統(tǒng)的壓力,、流量參數(shù)進(jìn)行調(diào)節(jié)或連續(xù)控制，例如.要求工作臺在工作進(jìn)給時按慢,、快,、慢連續(xù)變化的速度實現(xiàn)進(jìn)給，或按一定精度模擬某個*控制曲線實現(xiàn)旅力控制.普通液壓閥則實現(xiàn)不了,。這時可以用電液比例閥對液壓系統(tǒng)進(jìn)行控制,。
電液比例閥是一種按輸入的電信號連續(xù)地、按比例地控制液壓系統(tǒng)的液流方向,、流量和壓力的閥類,。它山電-機(jī)械比例轉(zhuǎn)換裝置和液壓控制閥本體兩大部分構(gòu)成.前者將輸入的電信號連續(xù)地按比例地轉(zhuǎn)換為機(jī)械力和位移輸出，后者在接受這種機(jī)械力和位移之后,、按比例連續(xù)地輸出壓力和流量.
電液比例閥的發(fā)展主要有兩個途徑一是用比例電磁鐵取代傳統(tǒng)液壓閥的手鑫調(diào)節(jié)裝置或取代普通電磁鐵發(fā)展起來的;二是由電液伺服閥簡化結(jié)構(gòu),、降低精度發(fā)展起來的。下面介紹的比例閥均指前者,，它是當(dāng)今比例閥的主流,。與普通液壓閥可以互換。
比例電磁閥的結(jié)構(gòu)如圖5-27所示,。比例電磁鐵是直流電磁鐵,，但它與普通直流電磁鐵不同。普通直流電磁鐵的銜鐵只有吸合和斷開兩個工作位置,，并且在吸合時磁路中幾乎沒有氣隙.而比例電磁鐵要求吸合力或位移與給定電流成比例,。并在銜鐵的全部工作行程上，磁路中保持一定的氣隙‘.其結(jié)構(gòu)主要由極靴1,、線圈2,、殼體5和銜鐵10等組成。線圈2中通電后產(chǎn)生磁場,，因隔磁環(huán)4的存在,。使磁力線主要部分通過銜鐵10、氣隙和極靴1,，形成回路口極靴對銜鐵產(chǎn)生吸力門在線圈中電流一定時,。吸力的大小因極靴1與銜鐵間的距離不同而變化,。但銜鐵在氣隙適中的一段行程中，吸力隨位置的改變發(fā)生的變化很小,。
設(shè)計中就使比例電磁鐵的銜鐵在這段行程中工作。因此,。改變線圈中的電流,，即可在銜鐵上得到與其成正比的吸力。用比例電磁鐵代替螺旋手柄來調(diào)整液壓閥,，就能使輸出樂力或