公开(公告)号：US11504655B2

公开(公告)日：2022-11-22

申请号：US17174371

申请日：2021-02-12

申请人： GRENEX Limited

发明人： Chungchang Kuk ,  Younglong Kuk

IPC分类号： B01D33/50 ,  B01D33/21 ,  B01D33/46

摘要： A backwashing suction device for a fabric filtration apparatus, and more particularly, a backwashing suction device for a fabric filtration apparatus in which an edge surface of a suction slit through which pile threads exit is inclined to form a slope so that the pile threads introduced into the suction slit when a fiber disk filter is rotated for backwashing come into contact with the slope and thus the amount of angular rotation of the pile threads is increased to increase the backwashing effect. Also, since a plurality of friction protrusions are formed to protrude from the slope, the effect of removing foreign substances can be further enhanced through the effect of rubbing and washing the pile threads on a washboard while the pile threads ascend over each of the friction protrusions one by one.