Grit spraying system

The utility model discloses a grit spraying system, including concrete mixing plant, dicang barricade, supply channel, spraying bracket, shower, nozzle and control box, wherein: still include wastewater collecting device and set up at the other spraying collection device of dicang barricade, spraying collection device includes the baffle of slope setting and sets up the play basin below the baffle, it accesss to wastewater collecting device to go out the basin, through the setting, the supply channel provides clean water for the shower, the blowout of rethread nozzle, utilize to set up and to collect the spraying of falling at the other baffle of dicang barricade, the baffle is met with on attached to the baffle to the spraying, it gets into out the basin to flow down along the baffle, the rethread goes out the basin flow and collects to wastewater collecting device, avoided taking the spraying of dust to fall ground in a large number, the dust has been reduced in subaerial accumulation, guarantee the clean a