Glue applicator of papermaking equipment and AKD surface direct glue application method

The invention relates to a glue applicator of papermaking equipment and an AKD surface direct glue application method utilizing the device. The device comprises a glue application machine located in a production line of the papermaking equipment, and an inlet pipe of a glue application agent inlet of the glue application machine is connected with an AKD liquid storage groove and a surface glue application liquid storage groove through a metering pump and a liquid storage pump respectively; a glue application agent reflux opening of the glue application machine is directly connected to the inlet pipe through a reflux pipe. By means of the device and method, in the papermaking and glue application process, AKD obtained after glue is applied to the surface directly does not flow back to a glue liquid groove directly, instead, the AKD flows back to the inlet pipe of the glue application machine directly, and time for staying in high temperature flue liquid of the AKD is reduced, so that the chance that the AKD ge