德国Rexroth二级比例方向阀4WRKE用于控制液压油的流向和流量。主级是受位置控制的,这样,控制阀芯位置在流量较大的情况下也不会受液动力的影响。力士乐4WRKE型先导式比例方向阀zui大工作压力350bar和zui大流量3000 l/min。 力士乐4WRKE型比例方向阀的特征:二级阀主要由比例阀的各个组件组成。"主级零电位"的零电位调节是工厂预设的,可以通过控制电子元件中的电位计,在公称行程的±30%范围内进行调节。拆下阀体前面的塞螺钉后,方可对集成控制电子元件进行检修。必须重新调节更换后的先导控制阀或控制电子元件。全部调节工作只能由的专业人员执行。 相当于普通开环比例换向阀,力士乐4WRKE型比例方向阀可实现自身的闭环控制,故对于液流的大范围突然变化不敏感,不会因作用在阀芯上的液动力而导致阀芯失控。这种阀同时还拥有比较好的频率响应特性(频率响应可达数十赫兹),特别适用于在设备的紧凑性加减速变换运动中对预缓冲有较高要求的场合。相对于伺服阀,此种阀的主级和先导级均采用滑阀结构,对油液清洁度不是很敏感,价格也便宜。阀的死区,增益,颤振和偏置等已在工厂内按标准阀调整并封装,故可维护性好,拆装方便,安装后不用调校,是一种即装即用的高性能比例阀,在部分场合可替代伺服阀使用,用于控制液流的开启、停止、方向。 力士乐4WRKE二级比例方向阀克服了现有产品比例电磁铁所需推力大、易漏油的缺陷。它包括先导阀和主阀两个部分;先导阀包括左右比例电磁铁、阀体、设于阀体内的阀芯;主阀包括主阀体和位于其中的阀芯,其特征在于:所述的先导阀阀体内设一横向油道,其两端连接左右比例电磁铁顶杆油腔,该油道中部设有回油孔,进入左右比例电磁铁顶杆油腔的端口均设阻尼螺钉;主阀体的控制油口经阀体内的油道与先导阀阀体中部设的控制油道相通,该油道止路于先导阀阀体两个环形沉割槽,先导阀芯的二个台肩上均设有节流窗口。本实用新型结构新颖、比例电磁铁所需推力小、密封要求低,有利于提高使用寿命、降低生产成本,可广泛应用于塑机行业及机械加工设备的液压控制系统中。 力士乐产品型号很多,不能一一列举,以下是Rexroth二级比例方向阀4WRKE的部分常用型号: 4WRKE35E1-1000L-3X/6EG24EK31/A1D3V,R901100929 4WRKE35E1-1000L-3X/6EG24K31/F1D3V,R901052827 4WRKE35E1000L-3X/6EG24K31/A1D3M-905,R901132836 4WRKE35E1000L-3X/6EG24EK31/A1D3V,R901211507 4WRKE35E1000L-3X/6EG24K31/A1D3V,R901102529 4WRKE35R3-1000L-3X/6EG24K31/A1D3M,R901160858 4WRKE35R3-1000L-3X/6EG24K31/F1D3M,R901183466 4WRKE35E1-1000L-3X/6EG24ETK31/A5D3M,R900718331 4WRKE35E1-1000L-3X/6EG24K31/A5D3M,R901093110 4WRKE35E1-1000L-3X/6EG24K31/A5D3M-280,R900756658 4WRKE35W8-1000L-3X/6EG24ETK31/A5D3M,R900759331 4WRKE35W8-1000L-3X/6EG24K31/A5D3M,R900704404 4WRKE35W6-1000P-3X/6EG24EK31/C1D3M,R901242289 4WRKE35E1-1000L-3X/6EG24EK31/A1D3M,R901025013 4WRKE35E1-1000L-3X/6EG24K31/A1D3M,R901033705 4WRKE35E1-1000L-3X/6EG24K31/A1D3M-280,R901018298 4WRKE35E1-1000L-3X/6EG24K31/C1D3M,R901231227 4WRKE35W8-1000L-3X/6EG24EK31/A1D3M,R901054883 4WRKE35W8-1000L-3X/6EG24EK31/F1D3M,R901127413 4WRKE35W8-1000L-3X/6EG24ETK31/F1D3M,R901160961 4WRKE35W8-1000L-3X/6EG24K31/F1D3M,R901176133 4WRKE35W6-1000P-3X/6EG24K31/F1D3M,R901227838 4WRKE35E1000L-3X/6EG24EK31/C1D3M,R900762781 4WRKE35W6-1000L-3X/6EG24K31/C1D3M,R901240438 4WRKE35E1000L-3X/6EG24K31/A5D3M,R900726602 4WRKE35W6-1000L-3X/6EG24K31/A5D3M,R900715082 4WRKE35E1000L-3X/6EG24ETK31/A1D3M,R900717029 4WRKE35E1000L-3X/6EG24K31/A1D3M,R900773355 4WRKE35E1000L-3X/6EG24K31/A1D3M-280,R901024647 4WRKE35E1000L-3X/6EG24K31/C1D3M,R901177187 4WRKE35W6-1000L-3X/6EG24EK31/A1D3M,R901094074 4WRKE35W6-1000L-3X/6EG24EK31/F1D3M,R901263621 4WRKE35W6-1000L-3X/6EG24ETK31/A1D3M,R900717030 4WRKE35W6-1000L-3X/6EG24K31/F1D3M,R900773088 4WRKE32E1-600L-3X/6EG24EK31/A1D3V,R901268348 4WRKE32W8-600L-3X/6EG24K31/A1D3V,R901056252 4WRKE32E3-600L-3X/6EG24EK31/A5D3M-280,R900749131 4WRKE32W6-600P-3X/6EG24EK31/F1D3V,R901047149 4WRKE32E3-400L-3X/6EG24K31/F1D3M,R901224967 4WRKE32E3-600L-3X/6EG24K31/F1D3M,R901213323 4WRKE32R3-400L-3X/6EG24K31/A1D3M,R901201718 4WRKE32R3-400L-3X/6EG24K31/F1D3M,R901183869 4WRKE32R3-600L-3X/6EG24K31/F1D3M,R901183870 4WRKE32E600L-3X/6EG24K31/A1D3V,R900739618 4WRKE32W6-600L-3X/6EG24ETK31/F1D3V,R901153481 4WRKE32W6-600L-3X/6EG24K31/A1D3V,R901238441 4WRKE32W8-600P-3X/6EG24K31/A5D3M,R900721885 4WRKE32E1-600P-3X/6EG24K31/A1D3M,R901100916 4WRKE32W8-600P-3X/6EG24K31/F1D3M,R901167507 4WRKE32W8-600L-3X/6EG24K31/C1D3M,R901299712 4WRKE32E1-600L-3X/6EG24EK31/A5D3M-280,R900716436 4WRKE32E1-600L-3X/6EG24K31/A5D3M,R900753006 4WRKE32E1-600L-3X/6EG24K31/A5D3M-280,R900711650 4WRKE32W8-600L-3X/6EG24EK31/A5D3M,R900747304 4WRKE32W8-600L-3X/6EG24ETK31/A5D3M,R901014199 4WRKE32W8-600L-3X/6EG24K31/A5D3M,R900704403 4WRKE32E1-600L-3X/6EG24EK31/A1D3M,R901117336 4WRKE32E1-600L-3X/6EG24K31/A1D3M,R901102982 4WRKE32E1-600L-3X/6EG24K31/A1D3M-280,R901089781 4WRKE32E1-600L-3X/6EG24K31/C1D3M,R901231200 4WRKE32E1-600L-3X/6EG24K31/F1D3M,R901141349 4WRKE32W8-400L-3X/6EG24EK31/A1D3M,R901107424 4WRKE32W8-400L-3X/6EG24EK31/F1D3M,R901121949 4WRKE32W8-600L-3X/6EG24EK31/A1D3M,R901090623 4WRKE32W8-600L-3X/6EG24EK31/F1D3M,R901093095 4WRKE32W8-600L-3X/6EG24ETK31/F1D3M,R901055130 4WRKE32W8-600L-3X/6EG24K31/A1D3M,R901023120 4WRKE32W8-600L-3X/6EG24K31/F1D3M,R900709134 4WRKE32E400S-3X/6EG24ETK31/A5D3M,R900743960 4WRKE32W6-600P-3X/6EG24EK31/A5D3M,R900740749 4WRKE32W6-600P-3X/6EG24EK31/A5D3M-280,R901096192 4WRKE32W6-600P-3X/6EG24K31/A1D3M-280,R901184378 4WRKE32W6-600P-3X/6EG24EK31/A1D3M,R901026641 4WRKE32W6-600P-3X/6EG24EK31/C1D3M,R901011230 4WRKE32E400L-3X/6EG24K31/A5D3M-280,R901119343 4WRKE32E600L-3X/6EG24EK31/A5D3M,R900717062 4WRKE32E600L-3X/6EG24EK31/A5D3M-280,R900762393 4WRKE32E600L-3X/6EG24ETK31/A5D3M,R900712050 4WRKE32E600L-3X/6EG24K31/A5D3M,R900713637 4WRKE32E600L-3X/6EG24K31/A5D3M-280,R900713635 4WRKE32E600L-3X/6EG24TK31/A5D3M,R901067075 4WRKE32W6-400L-3X/6EG24EK31/A5D3M,R900773692 4WRKE32W6-600L-3X/6EG24K31/A5D3M,R900721875 4WRKE32E400L-3X/6EG24K31/A1D3M,R901190018 4WRKE32E600L-3X/6EG24EK31/A1D3M,R901033473 4WRKE32E600L-3X/6EG24EK31/A1D3M-280,R901018297 4WRKE32E600L-3X/6EG24ETK31/A1D3M,R901016496 4WRKE32E600L-3X/6EG24K31/A1D3M,R900734062 4WRKE32E600L-3X/6EG24K31/A1D3M-280,R900249917 4WRKE32E600L-3X/6EG24K31/C1D3M,R900712759 4WRKE32E600L-3X/6EG24K31/F1D3M,R900245364 4WRKE32W6-400L-3X/6EG24EK31/F1D3M,R901122589 4WRKE32W6-400L-3X/6EG24K31/A1D3M,R901044433 4WRKE32W6-400L-3X/6EG24K31/F1D3M,R901117295 4WRKE32W6-600L-3X/6EG24EK31/A1D3M,R901088904 4WRKE32W6-600L-3X/6EG24EK31/F1D3M,R901016317 4WRKE32W6-600L-3X/6EG24ETK31/A1D3M,R900249276 4WRKE32W6-600L-3X/6EG24K31/A1D3M,R900780615 4WRKE32W6-600L-3X/6EG24K31/F1D3M,R900762389 4WRKE25R350L-3X/6EG24EK31/A1D3V,R901100919 4WRKE27W4-500L-3X/6EG24K31/A5D3M,R900708992 4WRKE27E1-500L-3X/6EG24EK31/A1D3V,R901268865 4WRKE27E1-500L-3X/6EG24K31/A1D3V,R901079320 4WRKE27W6-500L-3X/6EG24K31/A5D3V,R901050041 4WRKE27E500L-3X/6EG24EK31/A1D3V,R901266055 4WRKE27E500L-3X/6EG24K31/A1D3V,R901077093 4WRKE27E1-500L-3X/6EG24K31/C1D3M,R901229824 4WRKE25W1-350P-3X/6EG24EK31/A5D3M-706,R900709842 4WRKE25E3-350P-3X/6EG24K31/A5D3M,R900784875 4WRKE25E3-350P-3X/6EG24TK31/A5D3M,R901095293 4WRKE27W8-500L-3X/6EG24K31/A5D3M,R900706180 4WRKE25R3-350P-3X/6EG24K31/A1D3M,R900771042 4WRKE27E1-500L-3X/6EG24EK31/A1D3M,R900249274 4WRKE27E1-500L-3X/6EG24EK31/F1D3M,R901296528 4WRKE27E1-500L-3X/6EG24ETK31/A1D3M,R901051417 4WRKE27E1-500L-3X/6EG24K31/A1D3M,R900249923 4WRKE27W8-500L-3X/6EG24EK31/A1D3M,R900701429 4WRKE27W8-500L-3X/6EG24EK31/F1D3M,R901097952 4WRKE27W8-500L-3X/6EG24ETK31/A1D3M,R901199286 4WRKE27W8-500L-3X/6EG24K31/A1D3M,R900750794 4WRKE27W8-500L-3X/6EG24K31/F1D3M,R901072883 4WRKE25R3-350L-3X/6EG24EK31/C1D3M,R901308193 4WRKE27E500P-3X/6EG24ETK31/A1D3M,R901210319 4WRKE25E3-350L-3X/6EG24EK31/A5D3M,R900746579 4WRKE25E3-350L-3X/6EG24K31/A5D3M,R900977507 4WRKE25R350L-3X/6EG24K31/A5D3M,R901026399 4WRKE25W3-350L-3X/6EG24K31/A5D3M,R900768941 4WRKE25E350P-3X/6EG24K31/A5D3V,R901291595 4WRKE27E500L-3X/6EG24EK31/A5D3M,R901025115 4WRKE27E500L-3X/6EG24K31/A5D3M,R901135347 4WRKE27W6-500L-3X/6EG24EK31/A5D3M,R900735040 4WRKE27W6-500L-3X/6EG24K31/A5D3M,R900616821 4WRKE25W8-220L-3X/6EG24EK31/A1D3V,R901006429 4WRKE25W8-350L-3X/6EG24ETK31/F1D3V,R901191330 4WRKE25W8-350L-3X/6EG24K31/A1D3V,R901056249 4WRKE25R3-350L-3X/6EG24K31/A1D3M,R901201717 4WRKE25R350L-3X/6EG24EK31/A1D3M,R901125163 4WRKE25R350L-3X/6EG24EK31/A1D3M-280,R901216124 4WRKE25W9-350L-3X/6EG24K31/A1D3M,R900727368 4WRKE25W6-350P-3X/6EG24EK31/A1D3V,R901268350 4WRKE27E500L-3X/6EG24EK31/A1D3M,R901039097 4WRKE27E500L-3X/6EG24EK31/F1D3M,R901267566 4WRKE27E500L-3X/6EG24K31/C1D3M,R901130165 4WRKE27E500L-3X/6EG24K31/F1D3M,R901133144 4WRKE27W6-500L-3X/6EG24EK31/A1D3M,R901041512 4WRKE27W6-500L-3X/6EG24EK31/F1D3M,R901169415 4WRKE27W6-500L-3X/6EG24ETK31/A1D3M,R901169989 4WRKE27W6-500L-3X/6EG24K31/A1D3M,R900731496 4WRKE27W6-500L-3X/6EG24K31/F1D3M,R901147944 4WRKE25E350L-3X/6EG24K31/A5D3V,R901214428 4WRKE25W6-350L-3X/6EG24K31/A5D3V,R901047568 4WRKE25E1-350P-3X/6EG24EK31/A5D3M,R900713633 4WRKE25E1-350P-3X/6EG24K31/A5D3M,R900787373 4WRKE25W8-350P-3X/6EG24K31/A5D3M,R900709020 4WRKE25E350L-3X/6EG24K31/A1D3V,R901229184 4WRKE25E350L-3X/6EG24K31/F1D3V,R901114885 4WRKE25W6-220L-3X/6EG24K31/A1D3V,R901108789 4WRKE25W6-350L-3X/6EG24K31/A1D3V,R900706551 4WRKE25E1-350P-3X/6EG24EK31/A1D3M,R901072882 4WRKE25W8-350P-3X/6EG24EK31/A1D3M,R901059574 4WRKE25W8-350P-3X/6EG24K31/F1D3M,R901167508 4WRKE25W6-350P-3X/6EG24EK31/C1D3M,R901171085 4WRKE25E1-350L-3X/6EG24EK31/A5D3M,R900977502 4WRKE25E1-350L-3X/6EG24K31/A5D3M,R900704756 4WRKE25W8-220L-3X/6EG24EK31/A5D3M-280,R900713634 4WRKE25W8-350L-3X/6EG24EK31/A5D3M,R900977505 4WRKE25W8-350L-3X/6EG24EK31/A5D3M-280,R900720556 4WRKE25W8-350L-3X/6EG24K31/A5D3M,R900705775 4WRKE25E350P-3X/6EG24EK31/A5D3M,R901108088 4WRKE25E350P-3X/6EG24ETK31/A5D3M,R900710256 4WRKE25E350P-3X/6EG24K31/A5D3M,R900733297 4WRKE25W6-350P-3X/6EG24K31/A5D3M,R900748597 4WRKE25E1-220L-3X/6EG24EK31/A1D3M,R901189931 4WRKE25E1-220L-3X/6EG24EK31/F1D3M,R901297584 4WRKE25E1-220L-3X/6EG24K31/A1D3M,R901001641 4WRKE25E1-220L-3X/6EG24K31/A1D3M-280,R901179163 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4WRKE10W6-100L-3X/6EG24EK31/A5D3M,R900704755 4WRKE10W6-100L-3X/6EG24ETK31/A5D3M,R900710529 4WRKE10W6-100L-3X/6EG24K31/A5D3M,R900708050 4WRKE10W6-25L-3X/6EG24ETK31/A5D3M,R900717546 4WRKE10W6-50L-3X/6EG24EK31/A5D3M,R900702610 4WRKE10E100L-3X/6EG24EK31/A1D3M,R900704234 4WRKE10E100L-3X/6EG24EK31/F1D3M,R901125661 4WRKE10E100L-3X/6EG24ETK31/A1D3M,R900704216 4WRKE10E100L-3X/6EG24K31/A1D3M,R900973372 4WRKE10E100L-3X/6EG24K31/F1D3M,R901044485 4WRKE10E25L-3X/6EG24EK31/A1D3M-280,R901121866 4WRKE10E25L-3X/6EG24ETK31/A1D3M,R900781824 4WRKE10E50L-3X/6EG24EK31/A1D3M,R900706739 4WRKE10E50L-3X/6EG24ETK31/A1D3M,R900719754 4WRKE10E50L-3X/6EG24K31/A1D3M,R900973373 4WRKE10W6-100L-3X/6EG24EK31/A1D3M,R900703914 4WRKE10W6-100L-3X/6EG24EK31/F1D3M,R900757868 4WRKE10W6-100L-3X/6EG24ETK31/A1D3M,R900704245 4WRKE10W6-100L-3X/6EG24ETK31/F1D3M,R900746091 4WRKE10W6-100L-3X/6EG24K31/A1D3M,R900973353 4WRKE10W6-100L-3X/6EG24K31/F1D3M,R900705349 4WRKE10W6-25L-3X/6EG24EK31/A1D3M,R901057128 4WRKE10W6-25L-3X/6EG24ETK31/F1D3M,R901202900 4WRKE10W6-25L-3X/6EG24K31/A1D3M,R901131241 4WRKE10W6-50L-3X/6EG24EK31/A1D3M,R900719667 4WRKE10W6-50L-3X/6EG24EK31/F1D3M,R901217997 4WRKE10W6-50L-3X/6EG24ETK31/F1D3M,R900749617 4WRKE10W6-50L-3X/6EG24K31/A1D3M,R900713239 4WRKE10W6-50L-3X/6EG24K31/F1D3M,R900705350 4WRKE16W6A200L-3X/6EG24ETK31/A5D3M,R900704401 4WRKE10W100P-3X/6EG24K31/A5D3M-693=DE,R900246010 4WRKE10W1-100P-3X/6EG24ETK31/A5D3M-706,R900715737 4WRKE10W4-100P-3X/6EG24K31/A5D3M-683,R900718465 4WRKE10W5-100L-3X/6EG24K31/A5D3M-182,R900771222 4WRKE10W5-100P-3X/6EG24K31/A5D3M-683,R900708955 4WRKE16W5-125L-3X/6EG24K31/A5D3M-683,R900977509 德国4WRKE是一种高性能闭环比例方向阀,通过先导比例阀控制主阀芯的动作,在主阀体上装有一高精度的电位置反馈器及内置放大器,用于阀自身的闭环控制,可对液流的方向及流量进行成比例的精确控制。但在使用中也暴露出一些问题,如果不能引起高度的重视,可能会严重制约设备的稳定运行,缩短使用寿命,增加维护费用。 |