武汉盛美特机电设备有限公司
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泵:液压泵是为液压传动提供加压液体的一种液压元件,是泵的一种。它的功能是把动力机(如电动机和内燃机等)的机械能转换成液体的压力能。输出流量可以根据需要来调节的称为变量泵,流量不能调节的称为定量泵。液压系统中常用的泵有齿轮泵、叶片泵和柱塞泵 3种。齿轮泵:体积较小,结构较简单,对油的清洁度要求不严,价格较便宜;但泵轴受不平衡力,磨损严重,泄漏较大。叶片泵:分为双作用叶片泵和单作用叶片泵。这种泵流量均匀,运转平稳,噪音小,工作压力和容积效率比齿轮泵高,结构比齿轮泵复杂。柱塞泵:容积效率高,泄漏小,可在高压下工作,大多用于大功率液压系统;但结构复杂,材料和加工精度要求高,价格贵,对油的清洁度要求高。一般在齿轮泵和叶片泵不能满足要求时才用柱塞泵。还有一些其他形式的液压泵,如螺杆泵等,但应用不如上述3种普遍
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