Propeller casting system

The utility model discloses a propeller casting system which comprises a pouring system and further comprises a loam core combination used for forming a propeller, the loam core combination is formed by splicing a plurality of blade loam cores, the loam core combination is provided with a casting cavity used for forming the propeller, and the loam core combination is wrapped with a sand mold protection layer. An opening in the top of the sand mold protection layer is communicated with a casting cavity of the loam core combination, and the pouring system penetrates through the sand mold protection layer and injects molten metal liquid into the casting cavity of the loam core combination from bottom to top. According to the scheme, the propeller can be formed at a time through the loam core combination, the production efficiency is higher, the precision of the positions and angles of the blades is higher, the machining allowance reserved before casting is smaller, and the material cost is saved; in the scheme,