Abstract: 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.

Abstract: 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.

Abstract: Provided are a suction apparatus for a fabric filter and a filtering device for liquid filtration using the same. A main suction slit and a sub-suction slit are provided in parallel by a partition. Thereby, pile threads undergo delayed straightening and fluctuation while going through the sub-suction slit and then are rapidly straightened in the main suction slit. Thus, a back-washing effect can be further improved.

Abstract: A backwashing suction device, a fabric filtering apparatus using the same, and a process of removing foreign materials attached to filter cloths of the disc-shaped filter pieces are disclosed. The backwashing suction device is separated from the disc-shaped filter pieces, thereby preventing the filter cloths of the disc-shaped filter pieces from being pressed down for a long time by the backwashing suction device. This is to improve the filtering efficiency of the filter cloths and to prolong a service life of the filter cloths. Further, a backwashing suction device is configured to be separated from disc-shaped filter pieces using a buoyant force, thereby providing a simple structure and a smooth operation. This is to enable close contact with or separation from the disc-shaped filter pieces, and a fabric filtering apparatus using the same.

Abstract: Provided are a suction apparatus for a fabric filter and a filtering device for liquid filtration using the same. A main suction slit and a sub-suction slit are provided in parallel by a partition. Thereby, pile threads undergo delayed straightening and fluctuation while going through the sub-suction slit and then are rapidly straightened in the main suction slit. Thus, a back-washing effect can be further improved.