Structural Design and Flow Field Analysis of Hydraulic Spool Valve for Coal Winning Machine Based on CFD
ZHANG Chenyu
SONG Xiangkun
DAI Jianping
ZHU Hong
Abstract：Addressing the issues of large directional impact,poor control accuracy,and susceptibility to jamming in traditional spool valves within the hydraulic system of coal winning machines under complex working conditions,a systematic comparative study was conducted on the internal flow field characteristics of spool valves based on their actual working conditions.This study employed a combination of computational fluid dynamics(CFD)simulation and experimental verification.The valve cores with three different throttle groove structures were compared,namely conical,U-shaped,and triangular.The research results indicated that the triangular groove valve core could effectively enhance the accuracy of flow control,providing valuable insights for the subsequent optimization design and series development of hydraulic spool valves for coal winning machines.
Keywords：spool valvethrottling groovecomputational fluid dynamics(CFD)turbulence model
Publication Date：2025-12-31
Online Publishing Date：2026-01-29(First online date of this platform, not the publication date of the document)
Pages：6( 6-10,29 )