求翻译：旋风除尘器出来的气流经过排粉风机后送入布袋收集器进行精除尘。布袋收集器收集的煤粉直接落入煤粉仓。布袋收集器下设星形阀，细粉通过它落到细粉仓中。在布袋收集器后设置二次风机，使其在负压下工作，用它将气体由布袋收集器抽出后放到大气中，使整个制粉系统为负压操作，没有外泄煤粉，生产时没有粉尘飞扬，车间内空气含尘量小，生产环境好。是什么意思？

Cyclone dust collector airflow through the exhaust fan into a cloth bag to collect fine dust. Cloth bag to collect the collected pulverized coal directly into the coal storage. Cloth bag collection consists of star-shaped valve, powder it fall into the powder compartment. Set the secondary fan in a

正在翻译，请等待...

Cyclone airflow through the collector is powder exhaust fan into the bag after a fine dust. Bag collectors of pulverized coal directly