MFBL5.0/350 vertical air shaft explosion-proof door with a large number of explosion-proof doors is preferred

Description :

　　The MFBL5.0/350 explosion-proof door is used at the mouth of the vertical air shaft. When the fan stops running, the explosion-proof door can automatically rise. When a disaster occurs in the mine, the explosion-proof door can automatically open, release energy, and protect the main fan from damage. Explosion proof doors are selected based on the diameter of the wellbore and are suitable for negative pressure of the fan. There are two types: not exceeding 3432pa and 4413pa.

　　MFBL5.0/350 vertical air shaft explosion-proof doors are mainly used in mining and construction areas, as well as in the safety protection of construction equipment in industries such as coal, petroleum, metallurgy, power, chemical, and machinery.

　　MFBL5.0/350 Vertical Shaft Explosion proof Door Model Meaning

　　MFBL5.0/350 vertical air shaft explosion-proof door

　　MFBL - Explosion proof door for vertical air shaft

　　5.0- Wellhead diameter 5000mm

　　350- Fan negative pressure not exceeding 350mm water column

　　Main structure of MFBL5.0/350 vertical air shaft explosion-proof door

　　The MFBL5.0/350 vertical air shaft explosion-proof door consists of explosion-proof cover, return air device, heavy hammer device and other components.

　　1. The explosion-proof cover adopts a conical structure and is connected in four parts, each of which is welded from steel plates and angle steels.

　　2. The return air device is of the pressure plate type.

　　3. The heavy hammer device consists of a heavy hammer frame, pulleys, and counterweights.

　　4. The sealing method adopts steel plate assembly welding outer ring plate fixing δ 15 rubber plate sealing

　　Precautions for MFBL5.0/350 vertical air shaft explosion-proof door

　　1. Choose explosion-proof doors for vertical air shafts within the range of high negative pressure of the fan to avoid dangerous situations of excessive negative pressure

　　2. The heavy hammer can be added or removed according to actual needs to ensure that the explosion-proof door automatically rises when the fan stops running, and regular inspections are carried out

　　3. Selection of sealing medium: Oil or oil-water mixture can also be used (water seal can be used in non icing areas)

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AfterSalesService :

• Explosion proof door for vertical ventilation shaft