The utility model is principally applied to a fume exhaust fan.
The concentrate blending plant regulates the fume volume from pre-drying fume exhaust system via controlling the opening of shutter valve.
This paper emphatically describes how to lift its fume exhaust temperature under low load running of a boiler so as to reduce low temperature corrosion.
In order to the drawbacks of the prior art, the utility model provides a convenient oil filter for fume exhaust fan which has a simple structure convenient for replacement of oil filter paper.
