关于对电动装置输出转速的确定，在阀门对其启闭时间没有严格要求时，应尽量选用较慢的速度。
Output speed of electric installations on the determination of its opening and closing the valve when the time is not strictly required, should try to use a slower speed.
同时，可以利用调整阀瓣的自重、弹簧的弹力以及阀瓣的底孔大小来确定阀门的开启压力和启闭时间。
Meanwhile, the flap valve can be used to adjust weight, spring tension and the bottom outlet valve flap valve opening size to determine the pressure and open and close time.
可实现快速启闭，某些结构的启闭时间仅为0.05 ~ 0.1 s，以保证能用于试验台的自动化系统中。
Headstock can be achieved quickly, some of the gate structure of time is only 0.05 ~ 0.1s, in order to secure the test-bed for the automated system.
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