原创文章

。弹簧复位功能的概念：阀门初始状态是关闭的-俗称“气开式”，通气后阀门开启，如果突然气源断掉了，这时候弹簧复位功能就起作用了，弹簧复位会把阀门关闭掉。同理，如果阀门初始状态是开启的--俗称“气闭式”，通气后阀门关闭，如果突然气源断掉了，这时候弹簧复位会把阀门打开。单作用气缸，通常用在那些：强酸，强碱，带有腐蚀性的液体介质，或者有毒气体。简单说，就是不能泄露的介质，如果泄露会造成伤亡事故的介质。所以单作用气缸比较贵。对于多回转类的明杆阀门来说，如果气动阀允许通过的最大阀杆直径不能通过所配阀门的阀杆，便不能组装成。因此，空心输出轴的内径必须大于明杆阀门的阀杆外

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