AIR KNIFE IN CONTINUOUS GALVANIZING LINE

摘要

An air knife used in a continuous galvanizing line is provided to exhaust air uniformly in a width direction of a steel plate corresponding to an air exhaust profile by forming a multi-step uniform pressure space between a chamber and a rib. An air knife comprises a chamber(10), a rib support(30), an upper rib(50) and a lower rib(70). The chamber forms a multi-step uniform pressure space. The rib support is connected at a front side of the chamber and has a supporter for maintaining strength of the air knife. The upper and lower ribs are installed at a front side of the rib support and cooperate with each other to form a gap serving as an outlet. The chamber includes a first rectifying wall(14) having a first air through-hole(14a) such that first and second uniform pressure spaces(A1,A2) are formed in the chamber.