Backflow prevention pipeline for vortex air-flotation system

The invention discloses a backflow prevention pipeline for a vortex air-flotation system, comprising a backflow prevention pipe, the left side of the backflow prevention pipe is fixedly connected witha first pipe through a first flange, and the right side of the backflow prevention pipe is fixedly connected with a second pipe via a second flange; and the left side of the inner cavity of the backflow prevention pipe is fixedly connected with a first fixing plate, and the left side of the first fixing plate is provided with an anti-backflow clamping slot. According to the invention, the backflow prevention pipeline solves the problem that an existing vortex air-floating system is poor in backflow prevention effect and sewage flows back to a previous pipe by combined use of the first fixingplate, the anti-backflow clamping slot, a fixing block, a chute, a movable rod, first fixing rods, second fixing rods, rolling wheels and anti-backflow clamping blocks. The backflow prevention pipeline for a vortex air-flotati