Positive-pressure sand-shooting sand box

The utility model discloses a positive-pressure sand-shooting sand box. The positive-pressure sand-shooting sand box comprises a front wall plate, a rear wall plate, a left wall plate, a right wall plate and a bottom plate, wherein the front wall plate, the rear wall plate, the left wall plate, the right wall plate and the bottom plate are integrated through connection pieces; the inner walls of the front wall plate, the rear wall plate, the left wall plate and the right wall plate are respectively provided with a split lining plate; installation holes with vent plugs are formed in each split lining plate; vent holes corresponding to the installation holes with the vent plugs in the split lining plates are formed in the front wall plate, the rear wall plate, the left wall plate and the right wall plate. The positive-pressure sand-shooting sand box is suitable for applying common clay sand to a shooting and squeezing molding machine; the bottom of the sand box is closed, so that the squeezed sand can be quickl