R987128256 PVV54-1X/193-122RJ15UUMC 力士乐油泵 叶片泵

上海韦米机电设备有限公司供应力士乐Rexroth单向阀、Rexroth压力继电器、Rexroth方向阀、Rexroth溢流阀、
Rexroth电磁阀、Rexroth节流阀、液压阀、比例阀、比例液压阀、Rexroth 液压产品  Rexroth 静态配置液压阀、比例液压阀、液压阀、REXROTH液压阀力士乐0811系列、力士乐比例阀，比例流量阀 液压阀、叠加式节流阀 两路节流单向阀、力士乐压力指示单元、力士乐柱塞泵，液压泵，外啮合齿轮泵-液压泵等供应，型号有4WE 、4WM 、DBD 、DR 、ZDB 、Z2FS 系列阀，A4V、A10VS0、A2FO系列柱塞泵，A2FE、A2FM液压马达，HED系列压力继电器。
单作用液压泵
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**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，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，其轴承负载较大。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
双作用液压泵
它的作用原理和单作用液压泵相似，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，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，所以称为双作用液压泵。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，所以又称为平衡式液压泵。
双作用液压泵的瞬时是脉动的，当叶片数为4的倍数时脉动率小。为此，双作用液压泵的叶片数一般都取12或16。
液压泵可广泛用于机床、塑机、压铸机、冶金、工程机械等领域。
泵芯易于安装、便于拆卸维修,可改变转向。
液压泵机械效率高：典型值为0.94，减小了能量损耗； 转速范围宽 － 转速范围为600～2800 rpm（车用型泵为400～2800 rpm），结合在小规格壳体中安装大排量的泵芯组件的方式，可优化工作状态，降低噪声
转速低：（600 rpm，车用型泵为400 rpm）、低压力及高粘度（860 cSt，车用型泵为2000 cSt）运行能力 － 使T6 液压泵能适应低温工况，功耗小且无卡滞危险； 压力脉动小 － 约±2 bar，由此可减小液压管道的噪声，并延长液压回路中其它元件的使用寿命
上海韦米机电设备有限公司主营产品:
液压元件：柱塞泵、液压泵、齿轮泵、马达、截止阀、方向阀、减压阀、流量控制阀、比例阀、伺服阀、插装阀、电液换向阀、电磁阀、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、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。
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REXROTH力士乐液压泵 REXROTH力士乐液压泵  REXROTH力士乐油泵
R978912926 PVV21-1X/040-018RR15DDMB
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R900931901 PVV21-1X/055-018RA15UUMB
R901107242 PVV21-1X/055-018RA15UUVB

以下是本公司常用德国博世REXROTH力士乐公司旗下进口液压泵的部分型号：
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R978903499 PVV21-1X/060-018RR15RDMB
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液压泵因为历史的液压泵根据中类型的不同有两种
一）指容积泵中的滑片泵。
二）指动力式泵的三泵（离心泵、混流泵、轴流泵）或其他的泵。
这类泵产品一般不会叫液压泵。但作为专著，液压泵几乎全部是指离心泵、混流泵、轴流泵等。
根据其每转的理论排量是固定值还是可变值，可以分为叶片式变量泵和叶片式定量泵。
工作原理编辑液压泵转子旋转时，叶片在离心力和压力油的作用下，尖部紧贴在定子内表面上。这样两个叶片与转子和定子内表面所构成的工作容积，先由小到大吸油后再由大到小排油，叶片旋转一周时，完成两次吸油与排油。
R900939702 PVV52-1X/193-055RA15UUMC
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​业务专员：董玄​
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