DEVICE FOR ADJUSTING A WIDTH OF AN AIR KNIFE, CAPABLE OF IMPROVING THE PRODUCING QUALITY OF A PLATED STEEL SHEET BY SELECTIVELY CONTROLLING A SPRAY RANGE OF A HIGH PRESSURE GAS BY VARYING THE WIDTH OF AN AIR KNIFE

摘要

PURPOSE: A device for adjusting a width of an air knife is provided to selectively control a spray range of a high pressure gas by varying the width of the air knife by an insulating member wound in a spiral shape moving to the inner side or the outside on both ends of the air knife.;CONSTITUTION: A device for adjusting a width of an air knife comprises a body(110), a rotation body(120), an insulating member(130), a rotary shaft(140), and a drive motor(150). The body is fixed to both ends of the air knife. An insert hole(112) is formed to a horizontal direction in order to penetrate an injection hole of the air knife on one side of the inside. The rotation body is installed inside the body. One end is fixed to one side of the rotation body and the other end is inserted inside the insert hole in a state where the insulating member is wound in a spiral shape in an external diameter of the rotation body. The insulating member controls a spray range by blocking a high pressure gas by moving to the inner side or the outside of the injection hole according to the rotational direction. The drive motor rotates the rotary shaft.;COPYRIGHT KIPO 2013