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The working process of electric furnace collecting hood

 

1. Electric furnace collecting hood is a tool to capture the dust generated by the work of the production equipment diffused inside the workshop through the catcher hood to effectively inhale into the pipeline and directly into the cloth bag. When the dust-containing gas enters the dust collector's hopper from the air inlet, the airflow slows down and the coarse particles of dust in the gas fall directly into the hopper due to inertia, playing the role of pre-collection of dust, and the airflow entering the hopper then folds upward through the filter bag equipped with a metal skeleton inside, and the dust is collected on the outer surface of the filter bag, and the purified gas enters the clean room at the top of the filter bag chamber and is collected and discharged to the outlet duct. With the filtering condition, the dust on the filter bag accumulates more and more, when the resistance of the equipment reaches the limited resistance value, by the dust cleaning control device according to the set value of the dust cleaning time (dust cleaning time and period according to the site working conditions), according to the set program to open the electromagnetic pulse valve, stop wind blowing, the use of compressed air instantaneous blowing to make the pressure inside the bag, the dust on the filter bag to mix down (even if the sticky fine dust can also be more bottom The dust on the filter bag will be mixed and dropped (even the sticky fine dust can be cleared at the bottom) to the ash hopper and discharged by the ash discharge mechanism. 

 

2. In order to make the dust removal air volume of each dust hood reach reasonable use, an air regulating valve is installed at the back end of the dust hood for air volume adjustment.

 

3. Workflow:Electric furnace – Dust collector – Spark trap – Dry powder coating – Bag filter – Fan – Chimney 

 

Design features of electric furnace fume hoods

 

The effectiveness of electric furnace fume capture depends to some extent on the structure form of fume hood.

 

Electric furnace adopts semi-enclosed short fume hood instead of high fume hood to reduce the smoke emission and prevent the fumes from escaping from the furnace, which can improve the workers' operating environment. This kind of fume hood is about 50-60 times of the theoretical furnace gas volume, generally designed as a hexagonal hood, according to the process needs to use water-cooled skeleton overall structure, to facilitate equipment maintenance, in the refractory-lined hexagonal hood of the six sides of the three sides of the installation of the charging door, the charging door in general does not open, only in the charging or pounding furnace operation to open a side, in order to reduce the entry of wild wind. Using a short hood than the high fume hood of 50% less smoke exhaust, flue gas temperature of about 400 ℃ ~ 700 ℃, when the hood flue gas temperature is greater than 500 ℃, the material of the hood should be heat-resistant steel, especially the design of the fume hood side of the charging door structure to prevent deformation, open flexible, and improve its sealing.

 

Our company is a professional supplier of electric furnace collecting hood. We have professional technicians and advanced equipment. If you are interested in this, please pay attention to Yushun Metallurgical Technology Co.

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