Unmanned sand cleaning device for sleeper mold

The utility model discloses an unmanned sand cleaning device for a sleeper mold. The device comprises a carborundum nozzle and a circulating part, the circulating part comprises a sand return funnel arranged on the lower side of the carborundum spray head; a roller way is arranged on the upper side of the sand returning funnel; a sand blasting shell connected with the sand returning funnel is arranged on the upper side of the roller way; a vibrating screen assembly and two sand boxes are arranged on the upper plane of the sand blasting shell. The two sand boxes are located on the two sides ofthe vibrating screen assembly respectively and connected with the vibrating screen assembly through the sand feeding packing auger, the input end of the vibrating screen assembly is connected with thefirst sand returning packing auger, the second sand returning packing auger is arranged on the sand returning funnel, and the first sand returning packing auger and the second sand returning packingauger are connected through