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D3DP系列PARKER液动式换向阀工作原理的详细资料
D3DP系列PARKER液动式换向阀工作原理派克六通阀有两组密封组件。每组密封组件（图2）由阀瓣、密封圈、调整块、调节螺钉、夹板和螺栓组成。阀瓣为碳钢板焊件，设有加强筋，即增加阀瓣强度又起导向作用，保证每组阀瓣间的同轴度。阀瓣上镶嵌聚氨脂橡胶圈，该材料具有耐油、耐磨损、性能稳定、密封良好和使用寿命长的特点。在凸轮的作用下，密封圈的球面与阀体密封面相接触产生挤压弹性变形，达到密封效果。调整块和调节螺钉在两组密封组件不能同步到位时可起调整作用，确保各通道密封性能同步到位。 密封组件
1夹板 2螺栓 3调整块 4阀瓣 5密封圈 6调整螺钉
3）Parker派克阀杆与阀体隔板和上阀盖间的轴向密封采用O形圈。
（4）Parker派克阀体隔板及上阀盖轴孔部位镶有铜套，可减小与O形圈间的摩擦力矩，密封组件开启与关闭灵活，操作力矩小。 （5）上阀盖设有指示牌及限位螺钉，阀杆上安装指针，明确指示各通道的接通状况，易于操作。
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D3DP系列PARKER液动式换向阀工作原理