This paper introduces the characteristics of pneumatic technology, working principle in pressure filling machine and pneumatic controlling system.

本文介绍了气动技术的特点，及其在压力灌装机中的工作原理和气动控制系统。

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Check the equipment controlling circuit and clean the contacting places. Check the pressure and valve, and if the pneumatic controller is working normally.

检查电器控制线路并清洁其接触点，查看各气压，气阀；气动控制器是否正常。

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The reliable working of balancing pressure pneumatic controlling doors lies on the driving effect of its link machine, so the rational parameters of link machine need to be designed.

矿用气控无压风门的可靠运行取决于连杆机构的受力传动效果，因此有必要对连杆机构的参数进行合理地设计。

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