Light-weight surface sizing feeding device

The utility model provides a light surface sizing feeding device which is convenient for continuous operation, ensures the quality of a glue solution and improves the quality of paper sheets. The device comprises a feeding tank used for storing a starch glue solution, a pressure screen used for screening the starch glue solution, a light-weight glue application assembly used for light-weight glueapplication, a vibrating screen used for removing impurities in the backflow glue solution, a backflow groove used for recycling the backflow glue solution and a conical sand remover set used for purifying the recycled glue solution. The light sizing assembly comprises an upper sizing roller, a lower sizing roller, an upper roller beam and a lower roller beam, the upper roller beam and the lower roller beam are used for providing starch glue for the upper sizing roller and the lower sizing roller respectively, metering rods are arranged between the upper roller beam and the upper sizing rollerand between the lower rol