SYSTEM FOR FLUSHING AND PREVENTION OF SEDIMENT IN A SEWAGE PIPE

In the technical point of the present invention, a device for flushing and preventing sediment in a pipe comprises a housing which comprises a washing water inlet on the upper side, a washing water outlet on the lower side, a connection water path in connection with the washing water outlet, and a connection water path member separated from a washing water containing space in the upper side; a siphon pipe which is installed to be stood in the housing and has a lower part opening to the inside of the connection water path and an upper part opening to the inside of the washing water containing space; an expansion pipe which is open to be in connection with the upper side of the siphon pipe; a buoyancy container which is combined with the upper side of the expansion pipe and has an upper opening part allowing washing water to overflow and introduce and an overtopping protrusion making washing water more than a predetermined amount overflow to the expansion pipe and be discharged; and a sealed container which has an upper part for surrounding the siphon pipe, the expansion pipe, and the buoyancy container with a washing water flowing space therebetween and an opened lower part. Accordingly, sediment is flushed and prevented by generating a siphon phenomenon using the expansion pipe and periodically discharging washing water. Also, bad odor and corrosion in a pipe are prevented, thereby expanding the replacement cycle of the sewage pipe.