力士樂比例減壓閥ZDRE10VP2-1X/200XLMG24K4M *
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武穴黎翔機(jī)電設(shè)備有限公司REXROTH力士樂銷售部
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
減壓閥是通過(guò)調(diào)節(jié),將進(jìn)口壓力減至某一需要的出口壓力,并依靠介質(zhì)本身的能量,使出口壓力自動(dòng)保持穩(wěn)定的閥門。從流體力學(xué)的觀點(diǎn)看,減壓閥是一個(gè)局部阻力可以變化的節(jié)流元件,即通過(guò)改變節(jié)流面積,使流速及流體的動(dòng)能改變,造成不同的壓力損失,從而達(dá)到減壓的目的。然后依靠控制與調(diào)節(jié)系統(tǒng)的調(diào)節(jié),使閥后壓力的波動(dòng)與彈簧力相平衡,使閥后壓力在一定的誤差范圍內(nèi)保持恒定。
1)調(diào)壓范圍:它是指減壓閥輸出壓力P2的可調(diào)范圍,在此范圍內(nèi)要求達(dá)到規(guī)定的精度。調(diào)壓范圍主要與調(diào)壓彈簧的剛度有關(guān)。
(2)壓力特性:它是指流量g為定值時(shí),因輸入壓力波動(dòng)而引起輸出壓力波動(dòng)的特性。輸出壓力波動(dòng)越小,減壓閥的特性越好。輸出壓力必須低于輸入壓力—定值才基本上不隨輸入壓力變化而變化。
(3)流量特性:它是指輸入壓力—定時(shí),輸出壓力隨輸出流量g的變化而變化的持性。當(dāng)流量g發(fā)生變化時(shí),輸出壓力的變化越小越好。一般輸出壓力越低,它隨輸出流量的變化波動(dòng)就越小。
力士樂ZDRE 系列電磁閥
ZDRE 10 VP1-1X/100LMG24K4M
ZDRE 10 VP1-1X/100XLMG24K4M
ZDRE 10 VP1-1X/200XLMG24K4M
ZDRE 10 VP1-1X/200YMG24K4M
ZDRE 10 VP1-1X/315XYMG24K4M
ZDRE 10 VP1-1X/315YMG24K4M
ZDRE 10 VP1-1X/50XLMG24K4M
ZDRE 10 VP2-1X/100LMG24K4M
ZDRE 10 VP2-1X/100XLMG24K4M
ZDRE 10 VP2-1X/100YMG24K4M
ZDRE 10 VP2-1X/200LMG24K4M
ZDRE 10 VP2-1X/200XLMG24K4M
ZDRE 10 VP2-1X/200YMG24K4M
ZDRE 10 VP2-1X/200YMG24K4V
ZDRE 10 VP2-1X/315XLMG24K4M
ZDRE 10 VP2-1X/315XLMG24K4V
ZDRE 10 VP2-1X/315XYMG24K4M
ZDRE 10 VP2-1X/50XLMG24K4M
ZDRE 10 VP3-1X/100XLMG24K4M
ZDRE 10 VP4-1X/100LMG24K4M
ZDRE 10 VP4-1X/100XLMG24K4M
ZDRE 10 VP4-1X/100XYMG24K4M
ZDRE 10 VP4-1X/100YMG24K4M
ZDRE 10 VP4-1X/100YMG24K4V
ZDRE 10 VP4-1X/200LMG24K4M
ZDRE 10 VP4-1X/200XLMG24K4M
ZDRE 10 VP4-1X/315LMG24K4M
ZDREE 10 VP1-1X/100XLMG24K31M
ZDREE 10 VP1-1X/100XYMG24K31M
普通溢流閥與比例溢流閥一樣,都有一個(gè)閥芯,閥芯的一端是液壓油產(chǎn)生的壓力,另一端是機(jī)械力。普通溢流閥通過(guò)調(diào)節(jié)彈簧力,來(lái)調(diào)整液壓壓力。而比例溢流閥是電磁鐵直接產(chǎn)生推力,作用在閥芯上,電磁鐵上的輸入電壓可以在0-24伏之間變化,產(chǎn)生的推力就隨之變化,從而得到連續(xù)變化的液壓壓力。
因?yàn)楸壤姶盆F的推力不大,所以直動(dòng)式比例溢流閥的流量很小,壓力70兆帕?xí)r,流量只有1升/分鐘左右。需要大流量比例閥的時(shí)候,要把這個(gè)比例閥做先導(dǎo)閥,下面還要配一個(gè)大通徑的溢流閥。
電磁溢流閥和比例溢流閥功能上區(qū)別不是太大,都是在系統(tǒng)壓力超過(guò)設(shè)定值時(shí)開啟卸壓、溢流;不同的是,比例溢流閥可以按比例調(diào)定溢流的流量,對(duì)系統(tǒng)的控制更加精密。普通的溢流閥就是開啟和關(guān)閉兩個(gè)位置,比例閥在開啟溢流時(shí)可以有多個(gè)位置。
rexroth比例插裝節(jié)流閥主要用于多泵并聯(lián)使用時(shí)安裝于水泵壓出口,起限制水泵工作流量,防止停泵回流作用。該閥采用導(dǎo)閥,主閥構(gòu)造,結(jié)構(gòu)緊湊,重量較輕。該閥安裝于水泵出口,在單泵啟動(dòng)和非全數(shù)設(shè)計(jì)工作泵工作時(shí),對(duì)工作泵起限制流量作用,使泵在較高效率狀態(tài)下工作;防止電動(dòng)機(jī)在水泵低揚(yáng)程、大流量、低效率時(shí),發(fā)生過(guò)載現(xiàn)象;防止超額定電流燒電機(jī)現(xiàn)象的發(fā)生,同時(shí)起到一定的節(jié)能效果。
rexroth比例插裝節(jié)流閥和安全閥為一體,組成先導(dǎo)式壓力閥,該閥即是卸荷閥又是安全閥,有時(shí)又是溢流閥.卸荷時(shí)其控制油道貫穿各路換向閥,同前述卸荷油道.當(dāng)各路換向閥處于中立位置時(shí),卸荷閥的控制油道(見圖1b和圖2)貫穿各路換向閥并與油箱連通.卸荷時(shí),大部分油液卸荷,通道短,壓力損失低.任一路閥換向工作,便切斷控制油道,油源來(lái)油就從換向閥進(jìn)入執(zhí)行元件工作,其工作壓力大小由導(dǎo)閥控制.此時(shí)系統(tǒng)壓力為導(dǎo)閥調(diào)整壓力.該種卸荷方式,即使換向閥路數(shù)增加,只是控制油道增加,卸荷壓力增加不大,始終保持較低卸荷壓力,此種卸荷方式多用于手動(dòng)換向閥,卸荷可靠.
rexroth比例插裝節(jié)流閥與直接作用自力式控制閥類似,其設(shè)定信號(hào)由指揮器的設(shè)定彈簧設(shè)置。如果閥后壓力升高,表示膜頭l下面的壓力高于上面壓力,閥芯3上移,控制閥的流通面積減小,使閥后壓力下降。同時(shí),作用在指揮器膜片4的壓力也升高,其作用-力大于由設(shè)定彈簧5提供的作用力,使指揮器組件6移動(dòng),擋板7。靠近噴嘴8,指揮器輸出壓力隨之減小,即在膜頭l上面壓力減小,使閥芯3上移,直到閥后壓力與設(shè)定彈簧的作用力平衡為止。針閥2用于調(diào)節(jié)放大系數(shù),過(guò)濾器9用于過(guò)濾介質(zhì)中的顆粒雜質(zhì),防止噴嘴被堵塞。另有一種采用重錘作為設(shè)定的自力式壓力控制閥。重錘經(jīng)杠桿連接到閥桿。
ZDREE 10 VP1-1X/100YMG24K31M
ZDREE 10 VP1-1X/200LMG24K31V
ZDREE 10 VP1-1X/200XLMG24K31M
ZDREE 10 VP1-1X/200XLMG24K31V
ZDREE 10 VP1-1X/200XYMG24K31V
ZDREE 10 VP1-1X/315LMG24K31M
ZDREE 10 VP1-1X/315XLMG24K31M
ZDREE 10 VP1-1X/315XYMG24K31M
ZDREE 10 VP1-1X/315YMG24K31M
ZDREE 10 VP2-1X/100XLMG24K31M
ZDREE 10 VP2-1X/100YMG24K31M
ZDREE 10 VP2-1X/200XLMG24K31M
ZDREE 10 VP2-1X/200XYMG24K31M
ZDREE 10 VP2-1X/200YMG24K31M
ZDREE 10 VP2-1X/315XLMG24K31M
ZDREE 10 VP2-1X/315XLMG24K31V
ZDREE 10 VP2-1X/315YMG24K31M
ZDREE 10 VP2-1X/315YMG24K31V
ZDREE 10 VP2-1X/50XLMG24K31M
ZDREE 10 VP2-1X/50XLMG24K31V
ZDREE 10 VP3-1X/100XLMG24K31M
ZDREE 10 VP3-1X/315XLMG24K31M
ZDREE 10 VP3-1X/315YMG24K31M
ZDREE 10 VP4-1X/100XLMG24K31M
ZDREE 10 VP4-1X/100XLMG24K31V
ZDREE 10 VP4-1X/100XYMG24K31M
ZDREE 10 VP4-1X/200XLMG24K31M
ZDREE 10 VP4-1X/200XLMG24K31V
ZDREE 10 VP4-1X/200YMG24K31M
ZDREE 10 VP4-1X/315LMG24K31M
ZDREE 10 VP4-1X/315XLMG24K31M
ZDREE 10 VP4-1X/315XYMG24K31M
ZDRE 6 VP1-1X/100MG24K4M
ZDRE 6 VP1-1X/100MG24K4V
ZDRE 6 VP1-1X/210MG24K4M
ZDRE 6 VP1-1X/210MG24K4V
ZDRE 6 VP1-1X/50MG24K4M
ZDRE 6 VP1-1X/50MG24K4V
ZDRE 6 VP2-1X/100MG24K4M
ZDRE 6 VP2-1X/100MG24K4V
ZDRE 6 VP2-1X/210MG24K4M
ZDRE 6 VP2-1X/210MG24K4V
ZDRE 6 VP2-1X/50MG24K4M
ZDRE 6 VP2-1X/50MG24K4V
ZDRE 6 VP3-1X/100MG24K4M
ZDRE 6 VP3-1X/210MG24K4M
ZDRE 6 VP3-1X/50MG24K4M
ZDRE 6 VP4-1X/100MG24K4M
ZDRE 6 VP4-1X/210MG24K4M
ZDRE 6 VP4-1X/50MG24K4M
ZDRE 6 VP4-1X/50MG24K4V
ZDR 6 DA1-4X/25YM
ZDR 6 DA1-4X/25YMV
ZDR 6 DA1-4X/25Y
ZDR 6 DA1-4X/25YV
ZDR 6 DA1-4X/75YM
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ZDR 6 DA1-4X/75YV
ZDR 6 DA1-4X/150YM
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ZDR 6 DA1-4X/210YM
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ZDR 6 DA1-4X/210Y
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ZDR 6 DA2-4X/25YM
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ZDR 6 DA2-4X/25Y
ZDR 6 DA2-4X/25YV
ZDR 6 DA2-4X/75YM
ZDR 6 DA2-4X/75YMV
ZDR 6 DA2-4X/75Y
ZDR 6 DA2-4X/75YV
ZDR 6 DA2-4X/150YM
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ZDR 6 DA2-4X/150Y
ZDR 6 DA2-4X/150YV
ZDR 6 DA2-4X/210YM
ZDR 6 DA2-4X/210YMV
ZDR 6 DA2-4X/210Y
ZDR 6 DA2-4X/210YV
ZDR 6 DA3-4X/25YM
ZDR 6 DA3-4X/25YMV
ZDR 6 DA3-4X/25Y
ZDR 6 DA3-4X/25YV
ZDR 6 DA3-4X/75YM
ZDR 6 DA3-4X/75YMV
ZDR 6 DA3-4X/75Y
ZDR 6 DA3-4X/75YV
ZDR 6 DA3-4X/150YM
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ZDR 6 DA3-4X/210YM
ZDR 6 DA3-4X/210YMV
ZDR 6 DA3-4X/210Y
ZDR 6 DA3-4X/210YV
ZDR 6 DA7-4X/25YM
ZDR 6 DA7-4X/25Y
ZDR 6 DA7-4X/75YM
ZDR 6 DA7-4X/75Y
ZDR 6 DA7-4X/150YM
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ZDR 6 DA7-4X/210YM
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ZDR 6 DB1-4X/150YM
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ZDR 6 DB3-4X/75YM
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ZDR 6 DB3-4X/150YM
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ZDR 6 DB3-4X/210YM
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ZDR 10 DA1-5X/75YM
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ZDR 10 DA2-5X/25YM
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ZDR 10 DA2-5X/75YM
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ZDR 10 DA2-5X/150Y
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ZDR 10 DA2-5X/210YM
ZDR 10 DA2-5X/210YMV
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Z2FS 10 B3-3X/SV
Z2FS 10 B5-3X/S2V
Z2FS 10 B5-3X/SV
Z2FS 10 B7-3X/S2V
Z2FS 10 B7-3X/SV力士樂Rexroth開關(guān)閥Z4WE系列截止閥
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R901087019 Z4WE6E166-3X/EG24N9K4/V/60 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)動(dòng)裝置是比例電磁鐵。
伺服閥的驅(qū)動(dòng)裝置是力馬達(dá)或力矩馬達(dá).閥體兼作閥套。
驅(qū)動(dòng)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(duì)液壓油液的要求更高.性能參數(shù)不同;否則容易堵塞,
用來(lái)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(diǎn):
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(guò)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(chǎng)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?yàn)楸壤y的性能越來(lái)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(guò)濾才行,而伺服閥中位機(jī)能只有O型(Rexroth產(chǎn)品的E型)。