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原文
Flexible throttle works Flexible throttle works, relying on flexible rubber hose clamp stem arising from throttling effect, the gas pressure can also be used to replace the valve stem compression hose. Simple structure, flexible throttle, pressure drop, high operating reliability. Sensitive to contamination, usually working pressure range of 0.3-0.63MPa. Application of pneumatic flow control valve for speed control of pneumatic actuators, hydraulic flow control valves than the speed difficult, due to a compression of the gas. Therefore, flow control valves with pneumatic governor should note the following on to prevent crawling: (1) can not have an air leak on the pipeline; (2) the cylinder, the lubrication between the piston is better; (3) flow control valve should be installed in the vicinity of the cylinder or air motor; (4) throttle means as the use of export; (5) plus the load should be stable. If the external load changes in large, should be with hydraulic or mechanical devices (such as gas-liquid interaction) to compensate for load changes caused by the change of speed.
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译文:
  柔性节流阀的工作原理,依靠阀杆夹紧柔韧的橡胶管而产生节流作用,也可以利用气体压力来代替阀杆压缩胶管。柔性节流阀结构简单,压力降小,动作可靠性高。对污染不敏感,通常工作压力范围为0.3—0.63MPa。 应用气动流量控制阀对气动执行元件进行调速,比用液压流量控制阀调速要困难、因气体具有压缩性。所以用气动流量控制阀调速应注意以下几点,以防产生爬行: (1)管道上不能有漏气现象; (2)气缸、活塞间的润滑状态要好; (3)流量控制阀应尽量安装在气缸或气马达附近; (4)尽可能采用出口节流调速方式; (5)外加负载应当稳定。若外负载变化较大,应借助液压或机械装置(如气液联动)来补偿由于载荷变动造成的速度变化。


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