The utility model provides a dry dust collecting equipment, includes drying chamber, drying cabinet, first tuber pipe, second tuber pipe, the drying chamber is including being used for placing the vent pipe that dried object's accommodation space, the first filtration storehouse that is located the accommodation space both sides and second filtered the storehouse, were located the accommodation space top, first filtration storehouse and second filter the storehouse and all communicate accommodation space, first filtration storehouse is equipped with the multiple first filter layer that is usedfor filtering the dust, be equipped with the multiple second filter layer that is used for filtering trivial dried object in the second filtration storehouse, vent pipe is equipped with axial fan, the both ends of first tuber pipe communicate first filtration storehouse and drying cabinet respectively, the both ends of second tuber pipe communicate vent pipe and drying cabinet respectively, firstfiltration storehouse, accommodation space, second filtration storehouse, vent pipe, first tuber pipe, drying cabinet, second tuber pipe communicate the complete drying channel of constitution in proper order.