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有些液压系统常需要多级压力调节,而实现多级压力调节的传统方法,是利用小型电磁换向阀将溢流阀的遥控口与几个远程调压阀连接起来,构成多级压力调节回路,如图1所示。采用本文介绍的具有截止功能的远程调压阀(以下简称截止调压阀)构成多级压力调节回路,可省去电磁换向阀及其附设的电控部分,将几个截止调压阀与溢流阀的遥控口直接连接,便可实现其功能,如图2所示。这样可使系统的结构紧凑,维修也方便。截止调压阀的结构原理如图3所示。它是在YF型远程调压阀的基础上加以改动,增加截止功能。当手柄7垂直向上,阀芯5在弹簧2
Some hydraulic systems often require multi-stage pressure regulation, and multi-stage pressure regulation to achieve the traditional method is the use of small solenoid valve to the remote control port pressure relief valve and several remote regulators connected to form a multi-stage pressure regulator circuit ,As shown in Figure 1. Using the remote pressure regulating valve with cut-off function (hereinafter referred to as the cutoff pressure regulating valve) described in this paper constitutes a multi-stage pressure regulating circuit, the electromagnetic reversing valve and the electric control part attached thereto can be omitted, and several cut- Relief valve remote control port directly connected to achieve its function, as shown in Figure 2. This makes the system compact and easy to maintain. Deadline regulator structure shown in Figure 3. It is based on the YF remote pressure regulator to be modified to increase the cut-off function. When the handle 7 is vertically upward, the spool 5 is at the spring 2