Spring-type round bag dust collector is designed for long-term stable operation under medium and low pressure.Using spring as the support of bag, thespring swing make the bag more vibratory and dust clean more thorough, also it will not need to occupy a large amount of maintenance space when replacing.Adopts modular structure,first the dust airflow through a settling chamber and it flow down, the coarser dust settling into the hopper when falling, other dust filter by bag, and the clean air through the filter come out by fan.