Mud valves and Angle by the hydraulic cylinder type combination valve, hydraulic power drive cylinder valve lift, the valve open or closed channel, in order to achieve the fluid off.

排泥阀产品由液压缸和角式截止阀组合而成，液压缸内动力带动瓣升降，使阀体通道开或闭，以达到流体通断。

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The device is designed by means of the jetting principle, and it takes the high-pressure injected water as power fluid to drive the formation fluid returning to the surface.

这种射流洗井器应用射流原理进行设计，利用高压注入水作动力液，抽汲地层液返出。

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The working principle of compound drive system of fluid power and mechanics is introduced. Its mechanics calculating formulae of force are given out.

介绍了一种液压-机械复合传动系统的工作原理，给出了其力学计算公式。

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