| 摘要 |
PURPOSE: A dust collector is provided to minimize the feed pressure of compressed air in an injector pipe, thereby suppressing the deviation in regeneration of multiple cylinder-shaped filters arranged in a direction which follows the axis of the injector pipe. CONSTITUTION: A dust collector comprises: a housing body(1), a filter unit(F) and a spray unit(J). The interior of the housing body is divided into an air supplying room(2) and a discharging room(3) by a partition wall(4). The filter unit is installed in the partition wall, and collects dust included in the filtering objective gas in the housing body. The filtering objective gas flows from the air supplying room to the discharging room. The spray unit sprays compressed air(H) from the discharging room to the filter unit in a form of pulse, and shakes off the collected dust in the filter unit. The filter unit is equipped with multiple cylinder-shaped filters(5). The spray unit is equipped with an injector pipe(11), and multiple spray holes(12) are arranged on the injector pipe. The inside diameter of the injector pipe is fixed. A ring-shaped reduced diameter portion(R) is installed at least one place of the axis core direction in the injector pipe.
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