是设计长度的滤料折叠成褶，首尾黏合成筒；筒的内外用金属框架支撑，上下用顶盖和底座固定，顶盖有固定螺栓及垫圈。
本课题采用的闭路循环式密闭通风除尘系统，使用环隙喷吹脉冲滤袋除尘器。
The effectiveness of an air tight ventilatory dust exhaustive system with closed circuit cycle and pulse fissure blow filter bag was studied.
采用旋风除尘器和滤袋除尘器，或旋风除尘器和滤芯除尘器串联的两级闭路回收系统，可达到喷粉理想回收效果。
Two stage connected closed recycle system, such as cyclone scrubber and bag filter scrubber, or cyclone and paper filter scrubber can enhance the recycle of powder.
破损因素是大都为设备不良，袋口小或压差过高，使滤袋脱离多孔板顶在喷吹管或除尘器盖板上，终究磨擦破损。
The damage factors are mostly poor equipment, low or high pressure bag, the bag from the top blowing in the porous plate or dust cover, eventually friction damage.
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