AIR KNIFE OF CONTINUOUS GALVANIZING LINE

摘要

An air knife of a continuous galvanizing line is provided to facilitate an installation work of a rib support of an upper rib which cooperates with a lower rib to control an air gap of an air outlet by forming the upper rib in a multi-step structure. An air knife of a continuous galvanizing line comprises a chamber(10) for containing and discharging air or gas, a multi-step upper rib(30) and a lower rib(40). The multi-step upper rib includes a first upper rib(32), which is fixed at a front side of the chamber and a second upper rib(34), which is installed while making surface contact with the first upper rib. The lower rib is installed at the front side of the chamber to form a gap serving as an outlet(20) by cooperating with the second upper rib. The second upper rib is installed on the first upper rib.