Purge device used for rhombus-shaped scraper plate mud-absorbing system

The utility model relates to the sewage treatment technical field, and specifically relates to a purge device used for a rhombus-shaped scraper plate mud-absorbing system of a water purification system in the aluminium electrolytic industry. The purge device comprises purge aeration pipes, pneumatic air pipes and purge holes on the pneumatic air pipes. The introducing pneumatic air pipes are introduced above mud-absorbing nozzles along a work bridge through a fixing support. The input end of each pneumatic air pipe is connected with pneumatic wind in an aeration tank in a water purification station or a self-assembling miniature air compressor, and the out end of each pneumatic air pipe is connected with the purge aeration pipes fixedly arranged at two sides of the mud-absorbing nozzles. The purge device used for the rhombus-shaped scraper plate mud-absorbing system is simple in structure, low in investment and low in cost, is easy to mount and manufacture, allows smoothness of sewage treatment to be guaranteed, and enables the labor intensity of operation workers to be reduced.