The invention discloses a purification
system for a surface
sizing starch glue solution and an application of the purification
system. A gluing groove, a glue applicator and a
backflow groove are sequentially connected through pipelines to form a loop, wherein the pipeline between the gluing groove and the glue applicator forms a gluing unit, the glue applicator is connected with the
backflow groove, and a pipeline leading to the gluing groove forms a
backflow unit; the purification
system is characterized in that the gluing unit further comprises a feeding screen, and the backflow unit further comprises a
slag remover and a square vibration screen which are connected in sequence; the feeding
sieve is used for filtering impurities in a glue solution of the gluing unit; the
slag remover isused for removing impurities with
high density in the glue solution of the backflow unit; the square vibrating screen is used for removing large-volume impurities in the glue solution of the backflowunit; according to the application of the purification system, an upper roller and a lower roller of the glue applicator are respectively provided with an independent purification system for simultaneously removing impurities. According to the invention, the backflow glue solution is subjected to
centrifugal force deslagging and volume deslagging in sequence, so that the cleanliness of the backflow
starch glue solution is more effectively improved.