德国力士乐比例阀功能简介@力士乐东莞代理 

德国力士乐REXROTH比例阀是螺纹将电磁比例插装件固定油路集成块上元件，螺旋插装阀具有应用灵活、节省管路和成本低廉等特点，近年来工程机械上应用越来越广泛。常用螺旋插装式比例阀有二通、三通、四通和多通等形式，二通式比例阀主比例节流阀，它常它元件一起构成复合阀，对流量、压力进行控制；三通式比例阀主比例减压阀，也是移动式机械液压系统中应用较多比例阀，它主对液动操作多路阀先导油路进行操作。利用三通式比例减压阀可以代替传统手动减压式先导阀，它比手动先导阀具有更多灵活性和更高控制精度。可以制成如图1所示比例伺服控制手动多路阀，不同输入信号，减压阀使输出活塞具有不同压力或流量进而实现对多路阀阀芯位移进行比例控制。四通或多通螺旋插装式比例阀可以对工作装置实现单独控制。

德国力士乐REXROTH比例阀一种是开关控制：要么全开、要么全关，流量要么大、要么小，没有中间状态，如普通的电磁直通阀、电磁换向阀、电液换向阀。德国力士乐比例阀功能简介@力士乐东莞代理 

德国力士乐REXROTH比例阀另一种是连续控制：阀口可以根据需要打开任意一个开度，由此控制通过流量的大小，这类阀有手动控制的，如节流阀，也有电控的，如比例阀、伺服阀。
REXROTH力士乐比例阀比例阀或伺服阀的目的就是：以电控方式实现对流量的节流控制（当然经过结构上的改动也可实现压力控制等），既然是节流控制，就必然有能量损失，伺服阀和其它阀不同的是，它的能量损失更大一些，因为它需要一定的流量来维持前置级控制油路的工作。

德国力士乐REXROTH比例阀一般来说和换向阀一样是滑阀结构，只不过阀芯的换向不是靠电磁铁来推动，而是靠前置级阀输出的液压力来推动，这一点和电液换向阀比较相似，只不过电液换向阀的前置级阀是电磁换向阀，而伺服阀的前置级阀是动态特性比较好的喷嘴挡板阀或射流管阀。

德国力士乐REXROTH比例阀也就是说，伺服阀的主阀是靠前置级阀的输出压力来控制的，而前置级阀的压力则来自于伺服阀的入口p，假如p口的压力不足，前置级阀就不能输出足够的压力来推动主阀芯动作。

德国力士乐REXROTH比例阀其实缺点极多：能耗浪费大、容易出故障、抗污染能力差、价格昂贵等等等等，好处只有一个：动态性能是所有液压阀中高的。就凭着这一个优点，在很多对动态特性要求高的场合不得不使用伺服阀，如飞机火箭的舵机控制、汽轮机调速等等。动态要求低一点的，基本上都是比例阀的天下了。一般说来，好像伺服系统都是闭环控制，比例多用于开环控制；其次比例阀类型要多，有比例压力、流量控制阀等，控制比伺服药灵活一些。从他们内部结构看，伺服阀多是零遮盖，比例阀则有一定的死区，控制精度要低，向应要慢。但从发展趋势看，特别在比例方向流量控制阀和伺服阀方面，两者性能差别逐渐在缩小，另外比例阀的成本比伺服阀要低许多，抗污染能力也强！

德国力士乐比例阀功能简介@力士乐东莞代理 

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0811405552 HM18-1X/210-D-R/V0/0
0811405553 HM18-1X/350-D-R/V0/0

德国力士乐比例阀功能简介@力士乐东莞代理 
0811405554 HM18-1X/100-V-S/V0/0
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0811404169 4WRPH 6 C3 B24L-2X/G24K0/M-750
0811404170 4WRPH 6 C3 B40L-2X/G24K0/M-750

德国力士乐比例阀功能简介@力士乐东莞代理 
0811404171 4WRPH 6 C4 B40L-2X/G24K0/M-750
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德国力士乐比例阀功能简介@力士乐东莞代理 
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德国力士乐比例阀功能简介@力士乐东莞代理 
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0811404405 4WRL 25 V370M-3X/G24Z4/M

德国力士乐比例阀功能简介@力士乐东莞代理 
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0811404417 WEGEVENTIL
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0811404444 4WRLE 25 V1-370M-3X/G24K0/A1M
0811404445 4WRVE 25 V370M-2X/G24K0/B5M
0811404446 4WRVE 27 V430M-2X/G24K0/B5M
0811404448 4WRVE 25 V250M-2X/G24K0/B5M
0811404452 4WRLE 25 WZ350SJ-3X/G24EK0/A1M-561
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0811404466 4WRLE 25 EZ350SJ-3X/G24TK0/A1M
0811404467 4WRLE 25 W3-350SJ-3X/G24EK0/A1WX02M-745
0811404470 4WRLE 25 W3-350SJ-3X/G24EK0/A1WX02M-756
0811404471 4WRLE 25 W4Z350SJ-3X/G24ETK0/A1M
0811404472 4WRLE 25 W4Z350SJ-3X/G24K0/A1M
0811404473 4WRLE 25 W350SJ-3X/G24EK0/A1WX02M-756
0811404474 4WRLE 25 W350SJ-3X/G24EK0/A1WX02M-745
0811404477 4WRLE 27 X430SJ-3X/G24EK0/A1WX02M-782
0811404478 4WRLE 27 E430SJ-3X/G24K0/A1M
0811404479 4WRLE 27 W3-430SJ-3X/G24EK0/A1WX02M-745
0811404480 4WRLE 25 WZ350SJ-3X/G24K0/A1M-759
0811404481 4WRLE 25 EZ350SJ-3X/G24ETK0/A1M
0811404485 4WRLE 27 E4-430SJ-3X/G24K0/A1M
0811404488 4WRLE 25 WZ350SJ-3X/G24K0/A1V
0811404489 4WRL 25 EZ000S-3X/G24Z4/M-867
0811404492 4WRLE 25 W4Z350SJ-3X/G24K0/A1M-732
0811404493 4WRLE 27 W430SJ-3X/G24K0/A1M-732
0811404494 4WRLE 35 W1100SJ-3X/G24K0/A1M-732
0811404496 4WRL 25 V300P-3X/G24Z4/M
0811404498 4WRLE 25 V370M-3X/G24ETK0/A1M
0811404500 4WRL 35 E1100S-3X/G24Z4/M

德国力士乐比例阀功能简介@力士乐东莞代理 
0811404501 4WRL 35 W1100S-3X/G24Z4/WX02M-767
0811404502 4WRLE 35 W1100SJ-3X/G24EK0/A1WX02M-744
0811404503 4WRLE 35 W5-600SJ-3X/G24EK0/A1WX02M-745
0811404504 4WRLE 35 W1100SJ-3X/G24K0/A1M
0811404505 4WRLE 35 W3-1100SJ-3X/G24EK0/A1WX02M-745
0811404506 4WRL 35 W2-1100S-3X/G24Z4/M
0811404508 4WRLE 35 R5-1100SJ-3X/G24EK0/A1WX02M-745
0811404515 4WRPH 6 C4 B02L-2X/G24Z4/M
0811404520 4WRPH 6 C3 B24L-2X/G24K0/M-784
0811404525 4WRPEH 6 C1 B24L-2X/G24K0/F1M
 

以下具有强大优势：

一、气动元件：

德国：德国FESTO费斯托气动元件，德国宝德BURKERT电磁阀，英国海隆诺冠

日本：日本SMC气动元件，日本CKD喜开理气动元件，日本小金井气动元件

意大利：意大利UNIVER意大利康茂盛

美国：美国ROSS美国ASCO电磁阀，美国MAC电磁阀

台湾：台湾MINDMAN金器，台湾AIRTAC亚德客

二、工控产品

德国：德国PILZ皮尔兹继电器，德国IFM易福门传感器，德国海德汉HEIDENHAIN德国P+F倍加福传感器，德国RENCON编码器，德国施克SICK德国TURCK图尔克，德国HIRSCHMANN赫斯曼工业交换机。德国亨士乐，德国MURR穆尔，德国金钟默勒  德国ELTROTE  施耐德

日本：日本欧姆龙OMRON传感器，日本神视SUNX基恩士，日本奥普士，日本SUMTAK盛太克编码器，日本内密控编码器

美国：巴士德BARKSDALE   美国EMX

三、液压元件

美国：美国NUMATICS纽曼蒂克，美国PARKER派克气动液压，美国VICKERS威格士，美MOOG穆格，美国FAIRCHILD美国POSEMOUNT罗斯蒙特，美国艾默生EMERSON美国哈希HACH美国丹尼逊液压元件，美国克力帕

德国：德国HAWE哈威，德国REXROTH力士乐，德国HYDAC贺德克，德国E+H，德国博力谋BELIMO

日本：日本油研YUKEN，日本不二越NACHI，日本黑田精工，日本丰兴TOYOOKI，日本大金液压DAIKIN，日本东机美

意大利：意大利ATOS阿托斯

等更多型号欢迎来电咨询订购！

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