Stop valves are one of the most important cutoff valves which play an important role in many fields. In the oblique stop valve, the flow path of valve body is in a slash with the main channel that makes the destruction of flow state is smaller than conventional cutoff valve. On the other hand, as the valve discs has shorter stroke and continuous fluid pressure, the required torque through the thread is relatively large when the stop valve is opened or closed. The rotate lift stem structure was designed as ball screw driven mode, which could reduce the closing torque of the cutoff valve to a great extent and the parts coordinated with the locking sleeve formed a locking device. By installing the bellow in the lower part of the stem, the fluid medium could be isolated with valve stem and the effect of temperature on the seal filler could be reduced. The valve body was set to the upper part and the lower part to facilitate the installation of bellow. The threedimensional modeling of the oblique stop valve driven by ball screw was completed by using SolidWorks and strength check was conducted. The force analysis of the valve stem shows that the closing torque reduces by 53%. The pressure field distribution and velocity vector at different opening degrees were observed by ANSYS FLUENT. The characteristics of pressure and velocity were obtained.
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高蕾娜,钟世权,李强,陈思言,何文武,易华林.一种可锁紧的丝杠螺母式直流截止阀[J].机床与液压,2019,47(5):85-88. . A Lockable Oblique Stop Valve Driven by Ball Screw[J]. Machine Tool & Hydraulics,2019,47(5):85-88