力士乐电磁换向阀3WE6A62/EG220N9K4/V

力士乐电磁换向阀3WE6A62/EG220N9K4/V R900935575，上海韦米机电设备有限公司主营进口品牌备件：力士乐REXROTH，安沃驰AVENTICS，本特利BENTLY，迪普马DUPLOMATIC，贝加莱B&R，阿托斯ATOS，爱尔泰克AIRTEC，世格ASCO等；欢迎询价采购！

上海韦米机电设备有限公司主营产品：
液压元件：柱塞泵、叶片泵、齿轮泵、马达、截止阀、方向阀、减压阀、溢流阀、手动阀、流量控制阀、比例阀、伺服阀、插装阀、电液换向阀、电磁阀、换向阀、电磁球阀、蓄能器、放大版、压力继电器、压力传感器。
气动元件：气动阀、阀岛、阀组、电磁阀、手动阀、换向阀、压力调节阀、流量控制阀，止回阀、气缸和驱动装置、压缩空气气源处理单元、真空技术、传感器、气动连接技术，电气连接技术。
电控伺服：伺服驱动器，伺服电机、PLC模块、I/O模块、框架模块、电源模块、数据接口模块、键相位模块、继电器模块、测速模块、温度模块、显示屏、传感器、探头、前置器、延伸电缆。
 
电磁阀产品是自控系统中不可缺少的执行器元件。由于电磁阀体积小，开关速度快，接线简单，功耗低，性价比高，经济实用等显著特点而被普遍运用于自控领域的各个环节，发挥着巨大的作用。电磁阀是一-种流体控制阀，尽管其优势众多，但选型的准确与否直接影响到阀门本身的使用效果及系统的稳定，甚至会给整个自控系统带来严重后果。较机械设备上常用的气动电磁阀及液压电磁阀相比，管路系统中的流体电磁阀在选型上及使用上均比单一介质复杂许多。

详解举例：4WE6D6X/EG24N9K4
4→4通（也有3通）4个方向油口
6→通经为6
D→机能符号（也有C、D、E、EA、EB等）
6X→60至69系列 安装和油口尺寸不变
斜杠（/）后面：无符号→弹簧复位
               O→无弹簧复位
               OF→无弹簧复位带定位作用
E→高功率电磁铁带可拆卸线圈的湿式电磁铁
G→直流电压（W代表交流如W230代表交流230V电压 50/60Hz,G205代表直流电压205V等其它电压和频率）
24→24V电压
N9→代表有隐式手动应急操作（标准）（只有N代表带有手动应急操作，无手动应急操作无代号）
K4→电气接线形式（单独接线，带有插头定位销DIN43 650-AM2,无导线插座）（DL指代集中接线在盖上有引线，有亮灯显示；DKL在盖上有集中插头，有亮灯显示（不带直角插座）
K4后面：无标识→无插入式节流口
        B08→节流口fl 0.8mm
        B10→节流口fl 1.0mm
        B12→节流口fl 1.2mm
B08后面：无标识→丁晴橡胶密封
         V→佛橡胶密封   （注意所用液压油与密封件的适应性）
V后面：无标识→不带定位销孔
       /60→带定位销孔

液压机是一种以液体为工作介质，用来传递能量以实现各种工艺的机器。液压机除用于锻压成形外，也可用于矫正、压装、打包、压块和压板等。液压机包括水压机和油压机。以水基液体为工作介质的称为水压机,以油为工作介质的称为油压机。液压机的规格一般用公称工作力（千牛）或公称吨位（吨）表示。锻造用液压机多是水压机，吨位较高。为减小设备尺寸，大型锻造水压机常用较高压强（35兆帕左右），有时也采用 100兆帕以上的超高压。其他用途的液压机一般采用 6～25兆帕的工作压强。油压机的吨位比水压机低。

基本原理是油泵把液压油输送到集成插装阀块，通过各个单向阀和溢流阀把液压油分配到油缸的上腔或者下腔，在高压油的作用下，使油缸进行运动.液压机是 利用液体来传递压力的设备。液体在密闭的容器中传递压力时是遵循帕斯卡定律。四柱液压机的液压传动系统由动力机构、控制机构、执行机构、辅助机构和工作介质组成。动力机构通常采用油泵作为动力机构，一般为积式油泵。为了满足执行机构运动速度的要求， 选用一个油泵或多个油泵。低压（油压小于2.5MP）用齿轮泵；中压（油压小于6.3MP）用叶片泵；高压（油压小于32.0MP)用柱塞泵。各种可塑性 材料的压力加工和成形，如不锈钢板的挤压、弯曲、拉深及金属零件的冷压成形，同时亦可用于粉末制品、砂轮、胶木、树脂热固性制品的压制。

驱动系统
液压机的驱动系统主要有泵直接驱动和泵-蓄能器驱动两种型式。泵直接驱动，这种驱动系统的泵向液压缸提供高压工作液体，配流阀用来改变供液方向，溢流阀用来调节系统的限定压强，同时起安全溢流作用。这种驱动系统环节少,结构简单,压强能按所需的工作力自动增减，减少了电能消耗，但须由液压机的大工作力和高工作速度来决定泵及其驱动电机的容量。这种型式的驱动系统多用于中小型液压机，也有用泵直接驱动的大型（如120000千牛）自由锻造水压机。

泵－蓄能器驱动 　在这种驱动系统中有一个或一组蓄能器。当泵所供给的高压工作液有余量时，由蓄能器储存；而当供给量不足于需要时，便由蓄能器补充供给。采用这种系统可以按高压工作液的平均用量选用泵和电动机的容量，但因为工作液的压强是恒定的，电能消耗量较大，并且系统的环节多，结构比较复杂。这种驱动系统多用于大型液压机，或者用一套驱动系统驱动数台液压机。
力士乐电磁换向阀3WE6A62/EG220N9K4/V R900935575
德国力士乐REXROTH电磁换向阀订货号和型号：
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液压系统结构
液压系统由信号控制和液压动力两部分组成，信号控制部分用于驱动液压动力部分中的控制阀动作。
液压动力部分采用回路图方式表示，以表明不同功能元件之间的相互关系。液压源含有液压泵、电动机和液压辅助元件;液压控制部分含有各种控制阀，其用于控制工作油液的流量、压力和方向;执行部分含有液压缸或液压马达，其可按实际要求来选择。
在分析和设计实际任务时，一般采用方框图显示设备中实际运行状况。空心箭头表示信号流，而实心箭头则表示能量流。
基本液压回路中的动作顺序一控制元件(二位四通换向阀)的换向和弹簧复位、执行元件(双作用液压缸)的伸出和回缩以及溢流阀的开启和关闭。对 于执行元件和控制元件，演示文稿都是基于相应回路图符号，这也为介绍回路图符号作了准备。
根据系统工作原理，您可对所有回路依次进行编号。如果一个执行元件编号为0，则与其相关的控制元件标识符则为1。如果与执行元件伸出相对应的元件标识符为偶数，则与执行元件回缩相对应的元件标识符则为奇数。不仅应对液压回路进行编号，也应对实际设备进行编号，以便发现系统故障。
DIN ISO1219-2 标准定义了元件的编号组成，其包括下面四个部分，设备编号、回路编号、元件标识符和元件编号。如果整个系统仅有一种设备，则可省略设备编号。
实际中，另一种编号方式就是对液压系统中所有元件进行连续编号，此时，元件编号应该与元件列表中编号相一致。这种方法特别适用于复杂液压控制系统，每个控制回路都与其系统编号相对应。

力士乐REXROTH液压元件应用行业：注塑机、吹塑机、橡胶和发泡机、陶瓷压机、同步折弯机(折板机),、剪板机(剪床）、冲切/步冲、金属压力机、弯曲/锯床、机床、食品机械、皮革/鞋机、木材/造纸机械、钢铁业/铸造、压铸机/挤压机、电厂、生态能源（风能-水力-太阳能）设备、油和天然气工业设备、混凝土泵、路机、钻井/开采设备、起重机、升降机/叉车、推土机、道路，隧道，水坝工程设备、压缩机、街道维修设备、模拟器/娱乐设备、卡车、铁路工程设备、航空工业设备、船舶/航海工业设备、打谷机/喷洒机、拖拉机/收割机。