4WREE10W1-50-2X/G24K31/A1V力士乐比例阀现货

4WREE10W1-50-2X/G24K31/A1V
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4WREE10W1-50-2X/G24K31/A1V
开式液压系统的特点：
　　(1)一般采用双泵或三本供油，先导油由单的先导泵提供。有些液压执行元件所需功率大需要合流供油，合流有两种方式：①阀内合流。一般有双泵合流供给一个阀杆，在由该阀一般杆控制供油给所需合流的液压执行元件。该合流方式的阀杆的孔径设计需要考虑多泵供油所虚的流通面积。②阀外合流。双泵分别通过各自阀杆，通过两阀泛联动操纵，在阀杆外合流供油给所需合流的液压执行元件。虽然操纵结构相对复杂、体积较大，但由于流经阀杆的饿是单泵流量，阀杆孔径相对较小，而且有可能与其他阀杆通用。
　　(2)多路阀常进行分块且分泵供油，每一阀组根据实际需要可利用直通供油道和并联供油道两种油道。前者可实现供油，既上游阀杆动作时，压力油就供给该阀杆操纵的液压元件，而下游阀杆操纵的液压元件就不能动作。后者可实现并供油。
　　(3)为满足多种作业工况及复合动作要求，一般采用简单的通断型二位二痛阀和插装阀，把油从某一油路直接引到另一油路，并往往采用单向阀防止油回流，构成单向通道。通断阀操纵有以下3种方式：①采用先导操纵油联动操纵，先导操纵油在控制操纵阀杆移动的同时，联动操纵通断阀。②采用操纵阀中增加一条油道作为控制通断阀的油道，这样在操纵操纵阀的同时，也操纵了通断阀的开闭。