Design Of Non - Dynamic Dust Suppression For Belt Conveyor

Transfer points of belt conveyors chute is usually located in belt conveyors system. As a complete plant system to transfer the material from one position to another location, it plays a very important role in raw material conveying system of industry. In most real life applications, the structure vibration of the transfer point, chute and belt wear, packing and spillage, material degradation and dust generation are major and real problems. The process of material transported includes the complex interaction between bulk solid, fluid and solid. There are many deficiencies and difficulties to analyze that process and to develop the new products by using routine test and simple finite element method, computational fluid mechanics, or the discrete element method.On the basis of multi-physics field coupling theories, a kind of transfer points of belt conveyor chute and coal are studied as research objects and the coal particles as discrete phase. According to Newton’s law, the motion of each particle can be solved through the method of Discrete Element Method(DEM); The gas is regarded as continuous phase, and the motion of gas can be obtained by solving Navier-Stocks equations with the method of Computational Fluid Dynamic(CFD); Finally, the two-phase coupling method and effect of gas-solid has been taken into consideration. Based on the above foundation, some different parameters of the transfer point of belt conveyor chute can be simulated and analyzed by using DEM-CFD coupling method.Real Description of the fluid-solid two-phase flow process in three-dimension of transfer points were achieved through coupling the discrete element solver EDEM and computational fluid dynamics solver FLUENT. Finally, based on the software platform of discrete element method(DEM) and finite element method(FEM), key parts of structures of the Non-power-drive dust suppression transfer point is analyzed by the use of EDEM and ANSYS software platform. The interaction between each phase as well as the movement of the bulk or the flow field can be clearly displayed on the screen, which can provides an effective theoretical guidance for the design of the belt conveyor transfer station,And gives an recommended method and practice reference to the design of damping noise reduction and reliability of transfer station structures.Under the guide of the theory, combining with the experience of engineering at home and abroad and field test and numerical predictions, the comprehensive research of Non-power-drive dust suppression design of transfer point of belt conveyors chute was carried out, and a series of results have been achieved. The main conclusion and some suggestions in this paper have been adopted in the engineering application.