4WEH16J7X6EG24N9ETK4

原装4WEH16J7X/6EG24N9ETK4 电液阀

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武穴黎翔机电设备有限公司REXROTH力士乐销售部

广泛应用于钢铁、冶金、铝行业、石油化工、航天、船舶制造、煤炭、水泥、电力、汽车、工程机械、食品、药业、林业、纺织、皮革、造纸等行业领域

电磁阀是用电磁的效应进行控制，主要的控制方式由继电器控制。这样，电磁阀可以配合不同的电路来实现预期的控制，而控制的精度和灵活性都能够保证。
电磁阀的主要特点
(1)外漏堵绝，内漏易控，使用安全。内外泄漏是危及安全的要素。其它自控阀通常将阀杆伸出，由电动、气动、液动执行机构控制阀芯的转动或移动。这都要解决长期动作阀杆动密封的外泄漏难题;唯有电磁阀是用电磁力作用于密封在隔磁套管内的铁芯完成，不存在动密封，所以外漏易堵绝。电动阀力矩控制不易，容易产生内漏，甚至拉断阀杆头部;电磁阀的结构型式容易控制内泄漏，直至降为零。所以，电磁阀使用特别安全，尤其适用于腐蚀性、有毒或高低温的介质。
(2)系统简单，便接电脑，价格低谦。电磁阀本身结构简单，价格也低，比起调节阀等其它种类执行器易于安装维护。更显著的是所组成的自控系统简单得多，价格要低得多。由于电磁阀是开关信号控制，与工控计算机连接十分方便。在当今电脑普及，价格大幅下降的时代，电磁阀的优势就更加明显。
(3)动作快递，功率微小，外形轻巧。电磁阀响应时间可以短至几个毫秒，即使是先导式电磁阀也可以控制在几十毫秒内。由于自成回路，比之其它自控阀反应更灵敏。设计得当的电磁阀线圈功率消耗很低，属节能产品;还可做到只需触发动作，自动保持阀位，平时一点也不耗电。电磁阀外形尺寸小，既节省空间，又轻巧美观。
(4)调节精度受限，适用介质受限。电磁阀通常只有开关两种状态，阀芯只能处于两个较限位置，不能连续调节，(力图打破的新构思不少，但还都处于试验试用阶段)所以调节精度还受到一定限制。电磁阀对介质洁净度有较高要求，含颗粒状的介质不能适用，如属杂质须先滤去。另外，粘稠状介质不能适用，而且，特定的产品适用的介质粘度范围相对较窄。
(5)型号多样，用途广泛。电磁阀虽有先天不足，优点仍十分突出，所以就设计成多种多样的产品，满足各种不同的需求，用途较为广泛。电磁阀技术的进步也都是围绕着如何克服先天不足，如何更好地发挥固有优势而展开。0810050134 H-4WEH16U1X/6ZG24N9ETK4/B08Z
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R900906426 H-4WEH 22 J7X/6EG24N9K4液压阀是用来控制液压系统中油液的流动方向或调节其压力和流量的，因此它可分为方向阀、压力阀和流量阀三大类。一个形状相同的阀，可以因为作用机制的不同，而具有不同的功能。压力阀和流量阀利用通流截面的节流作用控制着系统的压力和流量，而方向阀则利用通流通道的更换控制着油液的流动方向。这就是说，尽管液压阀存在着各种各样不同的类型，它们之间还是保持着一些基本共同之点的。例如：
（1）在结构上，所有的阀都有阀体、阀芯（转阀或滑阀）和驱使阀芯动作的元、部件（如弹簧、电磁铁）组成
（2）在工作原理上，所有阀的开口大小，阀进、出口间压差以及流过阀的流量之间的关系都符合孔口流量公式，仅是各种阀控制的参数各不相同而已。
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R901011026 4WEH 22 U7X/6EG24N9ETK4/B10
R901012578 4WEH 16 J7X/6EG24N9EK4/B10
R901016786 H-4WEH 25 J6X/6EG24N9ETSK4/B10D3V
R901016944 4WEH 16 HD7X/OF6EG24N9ETSK4/B10D3
R901019888 4WEH 16 J7X/6EG48N9ES2K4/B10
R901020758 H-4WEH 25 Q6X/6EG24N9ES2K4/B10D3
R901021615 H-4WEH 16 J7X/6EG24N9ETK4/B10D3V
R901025142 4WEH16 W42-7X/6EG24N9ETK33L/10N10D4SO803
R901025267 4WEH 16 L7X/6SG24N9K4
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R901030477 4WEH 32 L6X/6EG24N9K4
R901031173 4WEH 16 J2-7X/6EG24N9ETS2K4/B10
R901033502 4WEH 16 D7X/6EW230N9ETS2K4/B10
R901044505 4WEH 32 J6X/6EG24N9S2K4/B10
R901044794 4WEH 16 J7X/6EW230N9ES2K4/B10
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R901050431 4WEH 22 J7X/6EW230N9ES2K4/B10
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R901056379 4WEH 16 J7X/6EG24N9ETK4/B10D3V
R901056380 4WEH 16 HD7X/OF6EG24N9EK4/B10D3V
R901056381 4WEH 16 HD7X/OF6EG24N9ETK4/B10D3V
R901056390 H-4WEH 16 D7X/6EG24N9ETK4/B10D3V
R901056393 4WEH 16 J7X/6EG24N9S2K4/B08V
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R901071196 4WEH 22 HD7X/OF6EG24N9ES2K4/B10叶片泵的管理要点除需防干转和过载、防吸入空气和吸入真空度过大外，还应注意：
1．泵转向改变，则其吸排方向也改变叶片泵都有规定的转向，不允许反。因为转子叶槽有倾斜，叶片有倒角，叶片底部与排油腔通，配油盘上的节流槽和吸、排口是按既定转向设计。可逆转的叶片泵必须专门设计。
2．叶片泵装配 配油盘与定子用定位销正确定位，叶片、转子、配油盘都不得装反，定子内表面吸入区部分较易磨损，必要时可将其翻转安装，以使原吸入区变为排出区而继续使用。
3．拆装 注意工作表面清洁，工作时油液应很好过滤。
4. 叶片在叶槽中的间隙太大会使漏泄增加，太小则叶片不能自由伸缩，会导致工作失常。
5．叶片泵的轴向间隙 对ηv影响很大。
1)小型泵-0.015～0.03mm
2)中型泵-0.02～0.045mm
6．油液的温度和粘度 一般不宜超过55℃，粘度要求在17～37mm2/s之间。粘度太大则吸油困难；粘度太小则漏泄严重。


一、单作用叶片泵的工作原理
泵由转子1、定子2、叶片3、配油盘和端盖等部件所组成。定子的内表面是圆柱形孔。转子和定子之间存在着偏心。叶片在转子的槽内可灵活滑动，在转子转动时的离心力以及通入叶片根部压力油的作用下，叶片顶部贴紧在定子内表面上，于是两相邻叶片、配油盘、定子和转子间便形成了一个个密封的工作腔。当转子按逆时针方向旋转时，图右侧的叶片向外伸出，密封工作腔容积逐渐加大，产生真空，于是通过吸油口6和配油盘5上窗口将油吸入。而在图的左侧。叶片往里缩进，密封腔的容积逐渐缩小，密封腔中的油液经配油盘另一窗口和压油口1被压出而输出到系统中去。这种泵在转子转一转过程中，吸油压油各一次，故称单作用泵。转子受到径向液压不平衡作用力，故又称非平衡式泵，其轴承负载非常大。改变定子和转子间的偏心量，便可改变泵的排量，故这种泵都是变量泵。
二、双作用叶片泵的工作原理
它的作用原理和单作用叶片泵相似，不同之处只在于定子表面是由两段长半径圆弧、两段短半径圆弧和四段过渡曲线八个部分组成，且定子和转子是同心的。在图示转子顺时针方向旋转的情况下，密封工作腔的容积在左上角和右下角处逐渐加大，为吸油区，在左下角和右上角处逐渐减小，为压油区；吸油区和压油区之间有一段封油区把它们隔开。这种泵的转子每转一转，每个密封工作腔完成吸油和压油动作各两次，所以称为双作用叶片泵。泵的两个吸油区和两个压油区是径向对称的，作用在转子上的液压力径向平衡，所以又称为平衡式叶片泵。
双作用叶片泵的瞬时流量是脉动的，当叶片数为4的倍数时脉动率小。为此，双作用叶片泵的叶片数一般都取12或16。我们主营的产品：原装德国BOSCH REXROTH(博世-力士乐)液压阀，柱塞泵，马达. Rexroth力士乐
力士乐叶片泵
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