Airflow integration structure and 3D printing equipment

The invention relates to the technical field of additive manufacturing, in particular to an airflow integration structure and 3D printing equipment. The airflow integration structure comprises a first connecting part and a second connecting part, and an air inlet and a first air outlet are formed in the first connecting part; the interior of the second connecting part is partially communicated with the interior of the first connecting part, a second air outlet is formed in the second connecting part and located below the first air outlet, and airflow is suitable for flowing in from the air inlet in the first direction and flowing out from the first air outlet and the second air outlet in the first direction. Air flow is divided into two paths, main air flow is blown out from the first air outlet, auxiliary air flow is blown out from the second air outlet, a low-pressure backflow area below the main air flow is filled up, smoke dust at the position is prevented from flowing back, entrainment and pollution to a