And when the time is up, it will stop the rotary valve and bin gate to finish the discharging process.

定时时间到，停止闸板阀和卸灰电机，排灰停止。定时控制是程序自动通过定时进行排灰。

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The principle of it is:When the upper level is reached, the rotary valve and bin gate will start in turn to discharge.

其控制原理为：当上料位信号出现时，卸灰电机、闸板阀开始工作，进行排灰。

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Traditional bin pump using the double gate valve as inlet valve. After material filled with large volume vessel, this system using a strong air flow to blow the material into silo.

传统的仓式泵一般采用双闸阀作为进料阀，在输送过程中采用“集中一次输送”，即使用大容积的发送罐，然后通过较大的气耗量将物料吹至接受仓。

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This gate had large blast marks on it where the SEALs forced their way through as they closed in on bin Laden.

CNN: A visit to Osama bin Laden's lair