there is pressure within the也受气压力的作用
则作用于活塞上的气压力大于弹簧力使活塞
右移而排水排水至一定量Ifaceofthepistonheadwhen
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克服弹簧力及摩擦阻力上移排水口被关闭
当水杯内的水位升高到一定位置浮子浮力使压块与上节流孔脱离
The waterlevel dropped to a certain position on the throttle has been
Close thepiston chambe under
当水杯内无气压时浮子靠自重落下压块关闭上节流
气压力进入活塞上腔活塞下移水口被打开排水
ressure through an orifice
关闭活塞上腔气压通过下节流孔
排泄活塞上移,排水口再次被关闭这时水已基本排完
Excretion piston moves,the
drain is closed again,thi time the water has been basically drained
活塞被弹簧顶起活塞杆封住排水口
当水杯内的水位升高到一定位置浮子浮力使压块与上节流孔脱离
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