| 摘要 |
PROBLEM TO BE SOLVED: To efficiently and effectively recover filters of a ventilation gas purifier for a tunnel, in which a plurality of filter units are arranged without a need for the attaching, detaching or shifting of the filter units. SOLUTION: Washing water is jetted from nozzles 32 mounted to nozzle units 30A, 30B to the dust removing filters of the filter units 22 arranged vertically and horizontally. By moving the nozzle units 30A, 30B parallel along the direction of the arrangement of the filter units 22 while the water is jetted, the filter units to which the nozzles 32 are directed are shifted. Thus, the dust removing filters of the filter units 22 are cleaned in sequence. COPYRIGHT: (C)2008,JPO&INPIT
|
