清污机 (trash-cleaning machine ) 清除附着在拦污栅上杂物（一般称污物）的机械设备。在污物较多的水库或河道上，为保证水电站或泵站得以安全、正常地运行，常需设置清污机，以便在不停机和不放空水库的条件下进行清污。
大涌水厂格栅间的清污机在运行中出现了导轨磨穿问题。
The lead rail was worn out while the screen cleaner running in the bar screen room of Dayong Water Plant.
本文针对油田企业中抽油管清污机中存在的冲击问题，用PLC、变频器等对其控制进行了改造。
The paper introduces a transformation by PLC and frequency-changer in the light of current lashing problem of drawing-oil tube cleaning machine in oil field enterprises.
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