Explosion Proof Overhead Crane for Flour Mill
In the flour processing industry, dust explosion is the primary risk threatening production safety. According to statistics, about 20% of industrial explosion accidents worldwide are related to combustible dust, among which flour dust is listed as "high-risk explosive" due to its small particle size and strong diffusion. In order to safely and efficiently complete heavy lifting operations in high dust risk scenarios, explosion proof overhead crane for flour mill has become an inevitable choice.
Design of explosion proof overhead crane
● Explosion-proof level: Motors, control cabinets, junction boxes, etc. must meet the dual certification of Ex d IIC T4 (gas explosion-proof) and Ex tD A21 IP65 T135℃ (dust explosion-proof) to ensure that there is no ignition risk in the flour dust environment.
● Circuit protection: Adopt intrinsically safe circuit (IS Barrier) to limit the energy to less than 30mJ (lower than the minimum ignition energy of flour dust 50mJ).
● Spark-free materials: Copper-based alloy or Monel alloy is used for friction pairs such as gears and brake discs, and beryllium copper bolts are used for rail joints;
● Sealing protection: A labyrinth seal + nitrogen purge system is installed at the junction of the motor and the reduction box to prevent dust infiltration;
● The motor winding is embedded with a PT100 temperature sensor, and the power is automatically reduced when overheated;
● The air duct is designed inside the box-shaped main beam, and the explosion-proof fan is used to force heat dissipation to ensure that the surface temperature is ≤90℃.
Installation and maintenance of explosion proof overhead crane
● Partition installation: The bridge and track in the explosion-proof area are cleaned before laying, and ordinary cables can be connected in the non-explosion-proof area; on-site installers must pass explosion-proof training and wear anti-static clothing and dust masks.
● Check electrical seals, lubrication status and fasteners every month; replace seals and lubricants every six months; and conduct annual explosion-proof safety re-inspection of the entire machine to ensure that all indicators continue to comply with regulations.
● Develop emergency handling procedures for hoisting operations, including steps such as rapid dust cleaning, equipment power off and personnel evacuation, and conduct regular drills.
Explosion proof overhead crane for flour mill provides a safe, efficient and economical lifting solution for flour production with strict explosion proof design, reliable structural materials, advanced control technology and scientific maintenance system. As a manufacturer of clean room lifting equipment, KUNFENG CRANES customizes products that meet the clean and explosion proof requirements for customers with advanced technology and industry experience. Welcome to contact us for more product details!