The explosion-proof motor explosion-proof grade used in explosion-proof blower can be selected from DIIBT4 and DIICT4 grades; it is mainly used in coal mines, oil and gas, petrochemicals and chemical industries. In addition, explosion-proof fans are widely used as the main source of power in textile, metallurgy, city gas, transportation, grain and oil processing, paper, medicine and other sectors.
Explosion-proof blower are used in environments where flammable or explosive gases or vapours are constantly flowing, intermittent or periodically enough to produce explosives, and many flammable substances are produced in many production sites. For example, about two-thirds of the mines in the coal mine have explosive substances. In the chemical industry, about 80% of the production workshops have explosive substances. Oxygen as an ignition source is ubiquitous in the air. A large number of electrical instruments are used in the production process, and various friction sparks, mechanical wear sparks, static sparks, high temperatures, etc. are inevitable, especially when the instrument or electrical fails. Objectively, many industrial sites meet the explosion conditions. When the mixed concentration of explosive substances and oxygen is within the explosion limit, if there is a source of explosion, an explosion will occur. Therefore, it is necessary to take explosion protection.