摘要
从阀芯、阀套、阀体以及密封四个部分出发设计了一种适用于高水基介质的增量式换向阀,同时建立了密封结构的有限元模型,对其密封效果进行验证。结果显示,额定工作状态下,设计的阀套与阀芯相对位移精度、阀体液路压力损失以及密封泄漏量分别为0.02 mm、0.9 MPa、0.5 mL/min,均小于设计值。轻载、中载、快速、慢速精确推移四种工况下,阀芯节流孔优化后过流流量调节范围在25~65 L/min内。结果表明,此次设计的增量式换向阀结构适配常规工况,能满足流量调节需求,提高煤矿液压支架移动的控制精度,保障煤矿工作面安全。
This study designed an incremental directional control valve suitable for high-water-based media by focusing on four components:spool,sleeve,valve body,and seals.A finite element model of the sealing structure was established to validate its sealing performance.Results indicate that under rated operating conditions,the relative displacement accuracy between the valve sleeve and spool,pressure loss in the valve body fluid circuit,and seal leakage rate are 0.02 mm,0.9 MPa,and 0.5 mL/min,respectively—all below the design threshold of 1 mL/min.Under four operating conditions—light load,medium load,fast precision movement,and slow precision movement—the optimized throttle orifice of the spool enabled flow regulation within a range of 25~65 L/min.The results demonstrate that the designed incremental directional control valve structure is suitable for conventional operating conditions,capable of meeting flow regulation requirements,enhancing the control precision of coal mine hydraulic support movements,and ensuring safety in coal mining workfaces.
作者
杨青
Yang Qing(Shanxi Lu'an Antai Machinery Co.,Ltd.,Changzhi Shanxi 047199,China)
出处
《机械管理开发》
2025年第12期64-66,共3页
Mechanical Management and Development
关键词
液压支架
换向阀
推移精度
高水基介质
格莱圈密封
hydraulic support
directional control valve
positioning accuracy
high-water-content medium
O-ring seal
