Unpowered dust removal system suitable for coal transfer

The invention provides an unpowered dust removal system suitable for coal transfer. The unpowered dust removal system comprises: a transportation channel, which is used for forming a relatively sealed transportation space; a coal dropping device, which is used for unloading coal to a conveying channel; a vortex generator, which is used for generating vortex airflow to separate dust from airflow; a circulation generator, which is used for generating annular airflow to separate the dust from the airflow; a pressure balancer, which is used for adjusting pressure on the two sides of the pressure balancer to achieve pressure balance; and a separator, which is used for separating the dust from the airflow in an adsorption manner, wherein the coal dropping device, the vortex generator, the circulation generator and the separator separately communicates with the transportation space of the transportation channel, and the pressure balancer is arranged in the transportation space of the transportation channel. The unpo