该过滤器作为高效过滤器和中效过滤器的前置过滤器。
如果空气是再循环的，比如食品工业，可以用低效的前置过滤器。
If the air is recalculated in e. g. the food industry a less effective profiteer can be used.
本实用新型提供了一种铁路风动道岔前置过滤器，属于铁路运输设施的配套装置技术领域。
The utility model provides a pre-filter of a railway pneumatic turnover, and belongs to the technical filed of accessories of railway transport facilities.
前置是用来防备尘土以及泥沙颗粒进入以及拥塞首要过滤安装。
The sediment pre-filter is used to prevent dirt and sediment particles from entering and clogging the main filter unit.
前置是用来防备尘土以及泥沙颗粒进入以及拥塞首要过滤安装。
The sediment pre-filter is used to prevent dirt and sediment particles from entering and clogging the main filter unit.
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