Research on New Type Unpowered Dust Collector on Coal Mining Ground

The paper put forward a new method about dust process,without adding to external power,and taking advantage of pressure of wind and pressure in water on ground work face.The negative pressure was formed when pressure water was jet by nozzle,which lead dust into air pipes to achieve effective dust,this new dust method was simple,practical and efficient,which will lay theoretical basis for development about dust device later,which is purpose of this thesis and significance.