A10VSO71ED/31R-PPA12N00 德国力士乐柱塞泵是上海韦米机电设备有限公司主营产品之一，销售热线：021-61116913；联系人：雷青；在线QQ：2896079243；移动热线：13296124913；上海优质供应商，原装正品，价格优惠，常规产品现货供应。欢迎新老客户来电咨询采购！

液压泵是液压系统的动力元件，其功用是给液压系统提供压力油，从能量转换角度讲，它将是原动机（如发动机）输出的机械能转换为便于输送的液体的压力能。液压马达则属于执行元件，它能将输入液体的压力能转换为输出轴转动的机械能，用来拖动负载做功。根据结构形式，液压泵与液压马达具体可分为齿轮式、叶片式、柱塞式等类型。
1.液压泵压力
液压泵工作压力是指泵（或马达）在实际工作时输出（或输入）油液的压力，由外负载决定。
额定压力是指在正常工作条件下，按试验标准规定能连续运转的最高压力。其大小受寿命的限制，若超过额定压力工作，泵（或马达）的使用寿命将会比设计的寿命短。当工作压力大于额定压力时称超载。
2.转速
工作转速是指泵（或马达）在工作时的实际转动速度。
额定转速是指在额定压力下，能连续长时间正常运转的最高转速。若泵超过额定转速工作将会造成吸油不足，产生振动和大的噪声，零件会遭受气蚀损伤，寿命降低。
最低稳定转速是指马达正常运转所允许的最低转速。在此转速下，马达不出现爬行现象。
3.排量、流量
排量是指泵（或马达）每转一周，由密封容腔几何尺寸变化而得的排出（或输入）液体的体积，常用单位是ml/r（毫升/转）。排量可以通过调节发生变化的成为变量泵（或变量马达），排量不能变化的成为定量泵（或定量马达）。
实际流量是指泵（或马达）工作时出口处（或进口处）的流量。由于泵本身存在内泄漏，其实际流量小于理论流量。由于马达本身也存在内泄漏，要实现指定转速，为补偿泄漏量，其输入实际流量必须大于理论流量。
4.效率
容积效率，对液压泵是指其实际流量与理论流量的比值。对液压马达是指其理论流量与实际流量的比值。
机械效率，对液压泵是指其理论转矩与实际输入转矩的比值。对液压马达其实际输出的转矩为理论转矩克服摩擦力后的转矩，因此其机械效率为实际输出转矩与理论转矩的比值。
总效率是指泵（或马达）的输出功率与输入功率的比值。总效率等于容积效率与机械效率的乘积。

专业从事欧美进口液压、工控设备的贸易企业。公司专业经销德国力士乐产品，在力士乐液压泵、液压阀、伺服及比例阀、放大板等产品具有很强的竞争优势。
我公司优势产品系列有：
单向阀：S15A，S20A，Z1S，Z2S，SL10，SL20，SV10，SV20，RVP
电磁阀：4WE6、4WE10、4WE16
电液阀：4WEH10H、4WEH16、4WEH25
溢流阀：DBD，ZDB，Z2DB，DB、DBW、DBET
减压阀：DR6DP、DR10DP、ZDR6、ZDR10、DR-4X、DR-5X
节流阀：Z2FS6、Z2FS10、Z2FS16、Z2FS22
调速阀：2FRM5，2FRM10，2FRM16
平衡阀：FD12FAFD12PAFD12KA,16KAFD16FA,16PA
继电器：HED80,HED40
柱塞泵：A4VSO、A10VSO、A2FO
定量马达：A2FM，A4FM，A10FM/E
电子单元：VT
比例方向阀：4WRA、4WRAE、4WRE、4WREE、4WREEM、4WRH、4WRZ、4WRZE、4WRKE、4WRBKE、4WS2EM
高频响方向阀：4WRPH、4WRPEH、5WRP、5WRPE、4WRREH、4WRP、4WRPE、4WRP(E)H、4WRSE、4WRSEH、4WRPNH、4WRL、4WRLE、4WRVE、4WRGE、4WRL、4WRLE、4WRDE、3WRCBH

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采用双柱塞结构，压力脉动小，宝石球寿命长；
采用进口宝石柱塞和宝石球，确保流量精确
通过 RS232 接口与电脑通讯，可直接由电脑进行控制 ；
接触介质材料耐有机溶剂腐蚀；
内建过压保护和流量校正系统 ；
大屏幕液晶显示；
精心设计的排气装置有效除去输送液体中的气泡。
流量与压力设定可记忆 可与PLC实现通讯（定制）
软件功能
实时显示当前压力、设定压力、设定流量 ； 实时曲线显示泵工作压力 可按两种方式设定流量和压力，快捷实用 ； 具有定时功能，方便设定泵的工作时间 ； 可保存当前工作压力，便于查看 ； 可打印当前压力等重要参数 。
平流泵（柱塞泵）产品广泛应用于石油勘探开发评价实验、石油化工的催化反应、聚合反应、食品、制药、液相色谱分析、超临界萃取、分离、原子能科学、环境科学、工艺设备、实验设备以及各种液体的微量送液等方面。TBP系列平流泵（柱塞泵）的各项性能指标能够满足油田流体渗流流变特性研究的要求，填补了我国在相关实验技术领域装备制造上的空白，达到同类仪器的国际先进水平。

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柱塞泵柱塞往复运动总行程L是不变的，由凸轮的升程决定。柱塞每循环的供油量大小取决于供油行程,供油行程不受凸轮轴控制是可变的。供油开始时刻不随供油行程的变化而变化。转动柱塞可改变供油终了时刻，从而改变供油量。柱塞泵工作时，在喷油泵凸轮轴上的凸轮与柱塞弹簧的作用下，迫使柱塞作上、下往复运动，从而完成泵油任务，泵油过程可分为以下两个阶段。
进油过程

当凸轮的凸起部分转过去后，在弹簧力的作用下，柱塞向下运动，柱塞上部空间（称为泵油室）产生真空度，当柱塞上端面把柱塞套上的进油孔打开后，充满在油泵上体油道内的柴油经油孔进入泵油室，柱塞运动到下止点，进油结束
回油过程

柱塞向上供油，当上行到柱塞上的斜槽（停供边）与套筒上的回油孔相通时，泵油室低压油路便与柱塞头部的中孔和径向孔及斜槽沟通，油压骤然下降，出油阀在弹簧力的作用下迅速关闭，停止供油。此后柱塞还要上行，当凸轮的凸起部分转过去后，在弹簧的作用下，柱塞又下行。此时便开始了下一个循环。
柱塞泵以一个柱塞为原理介绍，一个柱塞泵上有两个单向阀，并且方向相反，柱塞向一个方向运动时缸内出现负压，这时一个单向阀打开液体被吸入缸内，柱塞向另一个方向运动时，将液体压缩后另一个单向阀被打开，被吸入缸内的液体被排出。这种工作方式连续运动后就形成了连续供油 。