论文部分内容阅读
后控先导式压力阀与传统的先导式压力阀的功能相同,都是对液压系统的工作压力进行控制。其工作原理与传统的压力阀最大差别是:它利用导阀开启后的溢流油液,经主阀芯上的节流孔回油所产生的主阀芯两端的压力差(称控制压力)和主阀弹簧力控制主阀芯的移动。主阀芯在低压状态下的压差作用控制启闭,移动平稳,启闭性能好。作溢流阀和顺序阀使用时,便是控制主阀的开度,即利用控制压力和弹簧力控制阀口的开度,实现压力控制。 按其在液压系统中的作用可分为:溢流阀、顺序阀、减压阀。对其结构和原理作如下介绍。
The pilot-operated pilot pressure valve has the same function as the traditional pilot-operated pressure valve and controls the working pressure of the hydraulic system. The working principle and the biggest difference between the traditional pressure valve is: it uses the pilot valve open after the overflow of oil, the main spool through the orifice back to the oil produced by the main spool pressure difference between the two ends (called the control pressure) The main valve spring force controls the movement of the main spool. The main spool in the low pressure state of the pressure difference control opening and closing, smooth movement, opening and closing performance. When used as a relief valve and a sequence valve, the opening of the main valve is controlled. That is, the opening of the valve port is controlled by the control pressure and the spring force to achieve pressure control. According to its role in the hydraulic system can be divided into: relief valve, sequence valve, pressure reducing valve. The structure and principle of the following introduction.