The utility model relates to a throw material device and preparation technical field, a powder is with throwing material device and polymer solution preparation facilities, it includes the staving, layer board and adapting unit, staving lower part left side is equipped with along what the horizontal direction was arranged and throws the material slit, it is equipped with the layer board to correspond the staving below of throwing material slit position, the right -hand member top and fixed being in the same place in staving bottom of layer board, the left end of layer board is located throws material slit left side, the staving bottom still is fixed with can install the adapting unit in stirred tank dog -house position with the staving. The utility model has the advantages of reasonable and compact structure, convenient to use, it need not additionally to dispose the power supply, practices thrift the cost, throw the material slit in staving outside setting, the powder slowly leaks through throwing the material slit along with the vibration of the stirred tank body, has guaranteed the homogeneity and the stability of pan feeding, drop on the further dispersion of layer board from throwing the powder that gushes of material slit, guaranteed that the powder from the outer homogeneity during along the whereabouts in layer board left side, has safe, laborsaving, simple and convenient, efficient characteristics.