The preparation device comprises a main body unit, a flattening mechanism, a collecting mechanism and a material uniformizing mechanism, the main body unit comprises a working table and a
coating assembly, two supporting plates are fixedly installed at the upper end of the working table, T-shaped guide grooves are formed in the opposite sides of the two supporting plates, and the T-shaped guide grooves are formed in the upper end of the working table; the
slurry mixing device has the beneficial effects that
slurry is firstly gathered into a
temporary storage tank through arrangement of a material homogenizing plate, a
rotating disc and a beating hammer are driven to rotate through a rotating gear and a rotating shaft, an elastic
metal sheet is knocked by the beating hammer, so that the elastic
metal sheet violently vibrates, the
slurry is uniformly mixed, and the slurry is uniformly mixed; vibration is conducted to the material uniformizing plate, the slurry in the
temporary storage tank is evenly distributed and evenly attached to the surface of the
coating roller along with rotation of the
coating roller, and therefore the coating thickness of the heat conduction and insulation slurry is even, and the overall heat conduction and insulation performance of the heat conduction and insulation plate is improved.