1. Explosion protection measures in industrial dust collector
storage structure design When designing the silo workshop, the dust explosion problem must be considered, and the silo road line should be kept away from the office area and living area as far as possible, and the distance should not be less than 30m, and in the work space less than 150m There are no more than 10 staff members, and two safety exits can be set up. The width of the evacuation stairway is not less than 1.1m, the width of the corridor is not less than 1.4m, and the width of the evacuation door is not less than 0.9m. Independent manholes and air should be provided on each roof. Replacement devices cannot be connected to each other. The main dust production workshop should be equipped with explosion venting devices with manholes not less than 800 × 800mm.
2. The main explosion-proof measures taken from the selection and layout of electrical equipment for the production process are reasonable process design, correct selection, normal maintenance, compliance with operating procedures, control and elimination of ignition sources, prevention of frictional heating, impact ignition, elimination Ignition and explosion parts, simplify the process, avoid multiple lifting, adopt explosion-proof bucket elevator, the equipment must be reliably grounded, equipped with automatic alarm, automatic shutdown and other protection devices, design and manufacture of storage and transportation equipment should consider disassembly or Easy maintenance. At the same time, it should be considered to facilitate the ventilation and dust removal and the normal operation of the explosion-proof system. From the production equipment, select electrical appliances that meet the requirements of the National Electrical Law, equipment with dust and explosion resistance, reduce the line speed of the elevator and other conveyors, reduce damage, install permanent magnets on the raw grain conveyor, and remove metal from the grain. Thing.
3. Reduce dust production and dust emission points and control environmental dust concentration. For dust production or dust generation posts during storage and transportation, reduce dust production and dust emission points, control dust diffusion, and reduce dust concentration in the surrounding space, so that the dust concentration does not exceed 10 mg / m3. We control the dust concentration beyond the explosion limit, and naturally control the occurrence of dust explosion.