曲摆式三通换向阀设计  

Design of Curved Pendulum Type Three Way Reversing Valve

作　　者：苗芳 MIAO Fang(Agricultural Machinery Development Center of Shanxi Province,Taiyuan Shanxi 030002,China)

机构地区：[1]山西省农业机械发展中心,山西太原030002

出　　处：《农业工程》2020年第2期82-85,共4页AGRICULTURAL ENGINEERING

基　　金：山西省科技攻关项目(项目编号:033076)。

摘　　要：为满足丘陵山区机修梯田地波涌灌溉对换向阀的需求,采用虹吸原理和杠杆原理相结合的方法,设计一种由长方三通阀体和曲摆式伞形阀门组成的曲摆式三通换向阀。该换向阀的最大阻力矩发生在阀门开启阶段,加长阀门杆、缩短销轴到主轴的距离或提高密封环带材料的弹性系数均可以减小换向时的最大阻力矩。其换向阻力小,移动方便,满足丘陵山区机修梯田地对波涌灌溉设备的要求。In order to meet requirement of surge irrigation in the tractor ploughing terraces on the hilly mountainous area for reversing valves,a reversing valve with a cuboid three-way valve body and a umbrella valve supported by a curved pendulum was designed,by combination of siphon principle with lever principle.The results of test showed that maximum resistance of this reversing valve was occurred during the valve opening period.The biggest resistance moment could be reduced by lengthening valve rod,shortening distance from pin shaft to active spindle or improving elasticity coefficient of seal ring materials.It can be concluded that the three way reversing valve with a curved pendulum is easy to satisfy requirement of surge irrigation in the hilly mountain areas for its small resistance and convenience to move.

关 键 词：曲摆式 换向阀 波涌灌溉 

分 类 号：S275[农业科学—农业水土工程]