Recycling device for molding sand

The invention discloses a recycling device for molding sand. The recycling device comprises a grinding box, a stirring box and a feeding cylinder; the lower end inside the grinding box is provided with a grinding board seat; the upper end surface of the grinding board seat is provided with a metal grinding board; the grinding board seat is provided with a power supply device therein; the top of the grinding box is provided with a fixed rod; the lower end of the fixed rod is provided with a sliding rod on which a sliding seat is arranged; the lower end of the sliding seat is fixedly provided with an upper grinding board; the side wall of the grinding box is provided with a fixed seat; the upper end of the fixed seat is provided with a reciprocating electric pushing rod; a feeding hole is formed in the upper end of the grinding box; a discharging hole is formed in the lower end of the grinding box; the upper end of the stirring box is provided with a motor I, and the lower end of the stirring box is provided wi