Pleated filter cartridges with high pleat ratios and large filter surface are found to have great instances of patchy cleaning. In order to improve the intensity and uniformity of filter cleaning, a novel colliding pulse-jet cleaning method was designed and tested in this study. An experimental pulse-jet cleaning dust collector (the filtration chamber is 1225 × 750 × 1000 mm (width × depth × height)) was built with two nozzles installed over the filter cartridge (ϕ320 × ϕ240 × 660 mm) and on the cartridge bottom. The nozzle outlet pressure, pulse jet performance (intensity and uniformity), and compressed air consumption were studied. The effect of the trigger time difference between the top and bottom pulse jets on the performance was researched. This study demonstrated that the non-time-differenced colliding pulse-jet mode increased the pulse-jet intensity obviously to 2.56 times compared with the top-jet-only mode with some more air consumption (about 1.85 times than that in top-jet-only mode), but the pulse-jet uniformity slightly worsened. The pulse-jet intensity could be enhanced remarkably to 5.49 times if the colliding pulse jet was controlled in the strategy of varying trigger time difference, with the uniformity also increased obviously.

发现具有高褶皱比和大过滤器表面的打褶滤芯非常适合进行斑块清洁。为了提高过滤器清洁的强度和均匀性，本研究设计并测试了一种新的碰撞脉冲喷射清洁方法。建立了一个实验性脉冲喷射清洁集尘器（过滤室为1225×750×1000 mm（宽×深×高）），并在滤筒上方安装了两个喷嘴（ϕ 320×  ϕ240×660毫米）和墨盒底部。研究了喷嘴出口压力，脉冲喷射性能（强度和均匀性）以及压缩空气消耗量。研究了顶部和底部脉冲射流之间的触发时间差对性能的影响。这项研究表明，与仅顶部喷射模式相比，非时差碰撞脉冲喷射模式将脉冲喷射强度明显提高至2.56倍，耗气量更高（约为顶部喷射模式的1.85倍）仅模式），但脉冲喷射均匀性略有下降。如果采用改变触发时间差的策略控制碰撞脉冲射流，则脉冲射流强度可显着提高到5.49倍，均匀性也明显提高。