Rotary sand mixing device

The utility model discloses a rotary sand mixing device which comprises a material mixing cavity, a rotary clamping seat, a material emptying opening and an impact sheet, wherein the material mixing cavity is of a frustum-shaped structure with a thick upper part and a thin lower part; the inner wall of the material mixing cavity is smooth, the upper end of the material mixing cavity is opened, and the lower end of the material mixing cavity is sealed; a rotary clamping seat horizontally is clamped at the bottom of the material mixing cavity; the impact sheet extends into the material mixing cavity from the outside to touch the inner inclined wall of the material mixing cavity; the impact sheet is a parallelogram meshed plate block fixed outside the material mixing cavity; the long edge of the impact sheet is parallel to the inclined wall of the material mixing cavity, and the short edge of the impact sheet is parallel to the bottom surface of the material mixing cavity; the emptying opening is formed in the bottom of the material mixing cavity. The rotary sand mixing device is simple in structure, low in cost and convenient to operate; the mixing uniformity is improved, the mixing speed is increased, and the mixing efficiency and the product quality are improved.