皮带驱动辊筒前安装有皮带清洁刮板，清除粘结于皮带上的原煤。
This shall erect bell cleanup scrapper in front of belt-drive roller, so that this clean up crude coal adhered onto belt.
皮带驱动辊筒前安装有皮带清洁刮板，清除粘结于皮带上的原煤。
This shall erect bell cleanup scrapper in front of belt-drive roller, so that this clean up crude coal adhered onto belt.
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