Research On Filling System Of Vortex Cyclone Floating Pneumatic Pipeline Transportation

At present,my country's "three-under" coal co MPaction problem is serious,and the "three-under" coal co MPaction mining technology represented by filling mining is widely used.The current filling mining technology has great shortcomings in the transportation of filling materials.When pneumatic conveying is used,there are many problems in the transportation of filling materials,the mixing of gangue and air source is not smooth,and the transportation distance is short,which seriously restricts filling.Technology development.Therefore,this Paper takes the 31115 E working face of Xiezhuang Coal Mine as the research bac Kground,proposes the vortex cyclonic floating gas pipeline transportation filling technology,and conducts research from theoretical analysis,numerical calculation,simulation test,field practice,etc.,in order to solve the above problems and ensure coal mining Safe and efficient mining and filling at the working face,increasing the coal recovery rate in the mining area,filling the current gap in low-pressure pneumatic transportation at home and abroad,and achieving the following results:(1)Based on the theoretical analysis of the system scheme,analyze the pneumatic conveying wind speed,conveying characteristics and fan characteristics,use the theoretical calculation method of pneumatic pipeline conveying raw gangue filling,arrange the conveying system engineering test site on the ground,plan and design the system layout and operation Process,initially set the filling system Parameters of the vortex cyclone pneumatic pipeline transportation,determine the pipe diameter and segmentation,calculate,analyze and optimize the transportation air volume,pressure loss,and rotational float Parameters,and determine the actual transportation wind speed V in the underground engineering case,Solid-gas mixing ratio M,pipe inner diameter Ds,pressure drop,swirling Parameters,etc.(2)Based on the working face filling distance and coal gangue filling volume needs,the filling equipment and control system are selected.Research and design feeding system and wear-resistant material conveying pipeline,select air source power equipment,design feeding system,conveying pipeline and other devices,adopt PLC control system with HMI human-machine interface,carry out system control and detection,and use various The signal sensor collects real-time data from the system.(3)With the production layout of the 31115 E working face of Xiezhuang Coal Mine as the bac Kground,design the vortex cyclonic floating gas filling system to effectively connect and optimize the supporting coal gangue se Paration,crushing,transportation,storage,pneumatic conveying,PLC control,etc.during the filling and mining process The system is designed to maximize the Parallel operation of mining and filling.Practice shows that the system has a good production and operation effect.The Paper has 40 pictures,24 tables,and 80 references.