1., the closed source of harmful materials, we should first adopt airtight measures, as far as possible to seal it up, with the smallest amount of exhaust air to achieve the best control effect.

　　2.當不能將有害物源全部密閉時，可設置外部濟南排煙罩，外部罩的罩口應盡可能接近有害物源。

　　2., when the harmful sources can not be completely sealed, the outer Ji'nan smoke hood can be set, and the outer cover should be as close as possible to the harmful source.

　　3.濟南排煙罩的類型、結構形式應根據有害物源的性質和特點確定，做到罩內負壓或罩面風速均勻，其排風量(單位時間從濟南排煙罩排出的空氣量)應按防止有害物逸作業環境的原則通過計算確定，亦可采用實測數據、經驗數據，或通過模型實驗確定。

　　The type and structure of 3. Ji'nan hood should be determined according to the nature and characteristics of harmful substance source, do cover the negative pressure or the face velocity uniformity, the exhaust volume (per unit time cover amount of air expelled from the Ji'nan smoke) should be to prevent the harmful substances to escape working environment through the principle of calculation can be used to determine the measured the data and empirical data, or through the model experiments.

　　4.濟南排煙罩應能將有害物源放散的有害物予以捕

　　4. the smoke hood of Ji'nan shall be able to capture harmful substances released from harmful sources

　　集，不使其放散到作業環境中，使工作區有害物濃度達到衛生標準，以較小的能耗捕集有害物。

　　The utility model can not be discharged into the working environment, so that the concentration of harmful substances in the working area meets the national hygienic standard and catches the harmful substances with less energy consumption.

　　5.濟南排煙罩必須堅固耐用。

　　5. Ji'nan exhaust hood must be strong and durable.

　　6.當濟南排煙罩不能設置在有害物源附近或罩口有害物源距離較大時，可以設置吹吸罩。吹吸罩對于有害物源上掛有遮擋氣流的工件或隔斷氣流的物體時應慎用。

　　6., when the smoke hood of Ji'nan can not be set near the harmful source or the distance from the cover to the harmful source is large, the suction hood can be provided. The suction hood should be used with caution when it is used to remove objects or cut off airflow from the harmful sources.

　　7.濟南排煙罩的罩口宜順著氣流的運動方向，以利有害氣流直接進入罩內。但排氣線路不允許通過工人的呼吸帶。

　　7. the hood of the smoke hood of Ji'nan should be in the direction of the air flow, so that harmful air flows into the hood directly. But the exhaust lines are not allowed to pass through the worker's breathing belt.

　　8.外部罩、接受罩、吹吸罩應布置在避免存在干擾氣流之處。濟南排煙罩的設置應做到方便工人操作和設備維修。

　　8. external hoods, receiving hoods, and suction hoods shall be arranged to avoid interference with airflow. The installation of smoke hood in Ji'nan should be convenient for workers' operation and equipment maintenance.

　　本文的精彩內容來自濟南排煙罩詳細內容請點擊我們的網站: http://www.sjdysx.com/謝謝您的到來!

　　The exciting content of this article comes from the smoke hood of Ji'nan. Please click on our official website: http://www.sjdysx.com/, thank you for coming!

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