KANG Feifei， LIN Longyuan， ZENG Simin， LI Tianhe， CHENG Huan， LENG Hao， CHEN Haiyan

(School of Environment and Resource， Southwest University of Science and Technology， Mianyang 621000， China)

Abstract: In order to solve the problem of uneven cleaning on the upper part of the flat cartridge filter, this paper used a pressure sensor to measure the peak pressure of six poins that the distances from the top of this filter is 100、 500、 900 mm, aiming at the filter with length of 470 mm, width of 64 mm and height of 1 000 mm.Among them, the measuring points 4, 5, and 6 were opposite the nozzles, and 1, 2, and 3 were non-opposite the nozzles. The effects of two kinds of nozzles on the pressure peaks under different pulse pressures (0.3, 0.4 MPa) and jet distances (10, 20, 40, 60, 80, 100 mm) were studied. The results show that when the pulse pressure is 0.3, 0.4 MPa, the optimum jet distance under the circular nozzle is 20 mm, but the pressure distribution on the flat filter is extremely uneven, the peak pressure between the upper measuring points P1 and P4 exceeds 1 000 Pa, and this degree of unevenness increases as the pulse pressure increases. Under the same conditions, the optimal jet distance of the slot-type nozzle is 20-40 mm, and the peak pressure between the upper measuring points P1 and P4 is within 400 Pa, which effectively improves the problem of uneven cleaning of the upper part of the flat filter cylinder.

Keywords: flat filter cartridge；pulse-jet；peak pressure

文章编号：1008-5548(2020)02-0055-08

DOI:10.13732/j.issn.1008-5548.2020.02.009

中图分类号：X964                               文献标志码：A

收稿日期： 2019-08-21，修回日期：2019-10-11，在线出版时间：2019-12-31 11:01。

基金项目：四川省科技计划资助项目，编号：2018JY0438；西南科技大学研究生创新基金资助项目，编号：18ycx056。

第一作者简介：康菲菲(1990—)，女，硕士研究生，研究方向为工业通风除尘。E-mail：905418304@qq.com。

通信作者简介：林龙沅(1981—)，男，博士，副教授，研究方向为气流粉碎、分级与除尘净化。E-mail：LLy7572@126.com。