What inspections and checks must be completed before operating an axial flow explosion-proof fan?

What inspections and checks must be completed before operating an axial flow explosion-proof fan?

Today, we can see axial flow explosion-proof fans in a wide variety of settings. So, how much do you know about these fans? An axial flow explosion-proof fan refers to a product designed for use in areas containing flammable and explosive gases, capable of effectively preventing safety incidents caused by certain flammable substances to a certain extent. In fact, we know that in modern industrial production, many workplaces contain flammable substances to some extent. Therefore, in such situations, if axial flow explosion-proof fans are required, they must be selected. For example, in coal mines, approximately two-thirds of the areas contain explosive substances. In the chemical industry, at least 80% of production workshops contain explosive substances. At the same time, oxygen is present throughout our environment, providing the specific conditions necessary for combustion. Furthermore, due to the use of various electrical equipment in manufacturing processes, friction-generating operations may produce sparks and high temperatures. Objectively speaking, the risk of explosion is very high. Therefore, the use of axial flow explosion-proof fans is essential. Given these specific working conditions, we must select axial flow explosion-proof fans that possess certain explosion-proof capabilities. For example, a spark-resistant design can be adopted. So, what types of spark-resistant designs are available? One option is to use non-ferrous metal materials for the moving parts, typically aluminum, with an operating temperature limited to 120°C. Additionally, the impeller and shaft guard of the axial flow explosion-proof fan can also be made of aluminum, but they must be used at temperatures below 120°C.