Air knife capable of adjusting air outlet

The invention relates to the technical field of air knife equipment, in particular to an air knife capable of adjusting air outlet. The invention provides an air knife capable of adjusting air outlet. The air knife comprises a mounting frame, an air knife body and an air nozzle plate, wherein the air knife body and the air nozzle plate are mounted on the mounting frame; the tuyere plates are slidably arranged on the air knife body in the width direction, each tuyere plate comprises a width adjusting mechanism used for adjusting the sliding position, and an air outlet is formed between every two adjacent tuyere plates in the width direction. The tuyere plate is arranged in a sliding mode, so that the width of the air outlet seam can be adjusted, the adjustable range is large, and the structure is easy to implement. The air outlet direction is perpendicular to the width adjusting direction of the tuyere plate, counter-acting force is generated on the tuyere plate only when air is gathered, and the counter-actin