Fault analysis and design improvement of the filter ventilation dust removal device

The working principle of large mining excavator’s filter ventilation dust removal device is to filter air containing dust outside into the machinery house under the action of system fan，at the same time，the dust on the filter cartridge is cleaned by pulse valves and discharged continuously falling into the hopper.In the paper，the fault of the device occurred in the practical application is analyzed.Considering the design for structure，the steel structure of the device chassis，the structure of the hood and its support，system fan room structure，fan installation base，crew conveyor，etc is optimized design，the ash removal method of dust collector is optimized and the control program of the filter cartridge system is adjusted reasonable.The improved filter ventilation dust removal devices are widely used in series large mine excavator，to provide reliable guarantee for increasing the mobility rate of large excavator.