Screening and metering device for accurately metering aggregate

The utility model provides a screening and metering device for accurately metering aggregate. The screening and metering device comprises a vibrating screen (1) and an aggregate meter (2), the vibrating screen (1) is provided with multiple layers of inclined screen meshes, and the length of the lower-layer screen mesh is smaller than that of the upper-layer screen mesh; a temporary storage bin (14) with a plurality of independent grid bins is arranged below the screen; and an aggregate meter (2) with an accumulative weighing function is arranged below the temporary storage bin (14). When in use, the device disclosed by the utility model can be used for re-screening aggregates which are provided by different suppliers and have larger fluctuation in particle size range and particle size distribution into aggregates which are relatively stable in particle size range and particle size distribution and have different models, and accurate metering production is carried out according to a set material ratio, so that