This series of explosion proof vacuum cleaner are single phase electric operated, suitable for explosive dust hazardous area in Zone 22, use to clean and recycle of explosive dust (except reactive combustible powder) during polishing the vehicle, aerospace spacecraft workpiece. Widely used in aerospace, military, chemical pharmaceutical, mechanical processing, metal 3D printing and other industries. Most of the workpiece of automobile industry, aerospace industry is made of glass fiber, carbon fiber and other materials, lt is necessary to use explosion proof vacuum cleaner because most of the dust generated by the polishing of these materials is flammable, explosive and spontaneous combustion.