METHOD AND DEVICE FOR CONTROLLING FLOW OF LIQUID ZINC IN ZINC POT FOR HOT-DIP GALVANIZATION

Disclosed are a method and device for controlling flow of liquid zinc (2) in a zinc pot (1) for hot-dip galvanization. Under the blowing effects of an air knife above the zinc pot (1) for hot-dip galvanization onto strip steel (3), the liquid zinc (2) diffuses and flows outwards to a left side, a right side and a front end of the zinc pot and zones (I, II, III and IV) formed between the strip steel (3) and a snout (4), and surface slag rapidly generated on a surface of the liquid zinc (2) is driven to flow outwards to the zones (I, II, III and IV). On border sides of the zones (I, II, III and IV), multiple stages of travelling magnetic field generators (71, 72, 73, 74, 75, 76, 77, 78, 712, 756) are arranged above the surface of the liquid zinc (2) in the zinc pot (1), so as to excite a travelling magnetic field to generate an electromagnetic driving force on the liquid zinc (2) to drive the liquid zinc (2) to flow. The flow of the liquid zinc (2) caused by the travelling magnetic field generators (71, 72, 73, 74, 75, 76, 77, 78, 712, 756) is linked with the blowing flow of the air knife, driving the surface liquid zinc (2) in the zinc pot (1) to flow in order towards a rear end (zone V) of the zinc pot (1). The surface slag floating on the surface of the liquid zinc (2) is driven by the flowing liquid zinc (2) to flow in a controlled direction.