Preparation device for preparing continuous functional gradient materials by dry mixing and preparation method of preparation device

The invention discloses a preparation device for preparing continuous functional gradient materials by dry mixing. The preparation device comprises a vibrating platform, a mold, a stirring tank, a plurality of layers of stirring blades and a powder-material conveying device, wherein the mold and the stirring tank are arranged on the vibrating platform, the stirring blades are arranged in the stirring tank in the axial direction of the stirring tank, the powder-material conveying device is arranged on the upper end surface of the stirring tank, and the powder-material conveying device comprisesat least two conveying mechanisms for conveying powder materials to a feeding inlet separately. The invention further provides a preparation method of the preparation device for the preparing continuous functional gradient materials by dry mixing. The working speed of each conveying mechanism is controlled, so that at least one of the conveying mechanisms realizes the linear work of constant acceleration, and then the mi