The invention relates to a vacuum flushing dredging
system of a drainage
pipe network. The vacuum flushing dredging
system comprises drainage pipelines, a pump
station water-collecting well and receiving wells, wherein the drainage pipelines comprise drainage main pipes and drainage
branch pipes, the output ends of the drainage
branch pipes are connected with the drainage main pipes through the receiving wells, the
tail ends of the drainage main pipes are connected with the pump
station water-collecting well, a flushing device is arranged on each drainage main
pipe, each flushing device comprises a buffer
pool, a flushing
pool, a
vacuum pump, a vacuum membrane valve and a
siphon unit, one side of the bottom of an auxiliary
pool is connected with the bottom of a flushing chamber through the
siphon unit, the other side of the bottom is connected with the drainage main pipes, and the top of the flushing chamber is connected with the
vacuum pump through the vacuum membrane valve. Compared with the prior art, the vacuum flushing dredging
system has the advantages of automatic cleaning, trouble saving, labor saving and the like.