液压泵的作用是将液体输送到液压缸中液压泵的特点有： 1、排量大，液压系统体积小，流量稳定、压力可靠的流量调节装置，可通过增加输出压力来调节流量 采用全密封结构，具有密封性能高、工作可靠、流量稳定、压力可靠等特点，是液压泵的主要特点。

该型液压泵采用两级多叶叶轮构造，并采用了先进的气动结合具有结构简单、运行可靠等特点工作压力高达50Mpa在同一型号和结构设计上可按需要设计为不同排量，最大流量可达800L/min甚至更高流量调节装置可以控制系统压力恒流。

它将液压系统分为两个阶段来调节流量并使之保持稳定这使得液压泵更适合于高精尖和高压力，以及对工作质量要求苛刻的场合和要求较高流量要求该泵系列产品均采用德国霍伊茨瓦夫双转子轴流式压力泵技术，在保证泵送质量的同时减小了泵体截面尺寸，体积比一般液压泵更小同时还具有体积小、重量轻、效率高、动作可靠等特点（如单级液压系统);其输出压力为120-480MPa,流量50Mpa;泵体内设有可旋转平衡阀等特殊功能。

2、可通过控制其输出压力来调节系统压力，可使系统压力恒定 当压力降低时，其输出压力上升，系统压力逐渐上升压力稳定后，输出压力逐渐降低，直至压力稳定当处于系统压力恒定时，压力保持恒定这就允许系统不受压力的影响或不改变其稳定性和可控性。

在一个循环中，流体流量始终保持恒定水平，无波动而且这种调节装置不会改变系统的特性因此更适合于高压力工况使用，适合于非线性流体的高压和复杂管道的输送；用于高压机械泵；液压系统如压缩机和管道系统等这一特点为我们的液压泵带来了很大的优越性。

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