Research On The Tube Scraper Conveyor Based On Discrete Element Simulation

The tube scraper conveyor use scraper chain or steel wire rope as the traction element which conveyed powder or particles along the pipe. It has the characteristics of stable performance, low energy consumption, environmental protection and sealing in the whole conveying system. also can be horizontal, vertical and inclined combination arrangement to carry on the transportation. But the current calculation of pipe chain tension is not perfect; and the effect of conveying material characteristics on the surface of the bending section and unloading is great. In this paper, the theoretical analysis is carried out by constructing the mechanical model, and the movement of materials in pipe is simulated by discrete element software, puts forward the corresponding solutions. The project "high efficiency tube pipe conveyor system" belongs to the "Shanxi Key Laboratory of intelligent logistics equipment".In this paper, starting from the running resistance of the tube scraper conveyor, the coal particles are used as the conveying material to study the influence of the characteristics of the coal particles on the running resistance and the behavior of the particles in the conveying pipe. In this project, the coal particles with different humidity and particle size were compared. Through the discrete element software EDEM tracking calculation of each particle in the delivery pipe, and with its strong Analyst, the running resistance and particle behavior under different working conditions were obtained. Through the comparison of different humidity of pea coal, To avoid the difficult discharge of the pea coal, it required to control the repose angle under 39. Combined with the fine coal transport situation, it is found that it is easier to form agglomeration, and the fine coal is more sensitive to the humidity than coal. Through different size of coal particles in the dry simulation. It is found that a few pea coal doped in a large number of fine coal conveying process, running resistance has little effect on the transportation. By observing the bending of the coal particles, found that bending section of the coal particles of high speed, wear large, belong to the flammable point, need to take measures to control. In the horizontal section of the coal particle state is stable, there is no excess energy dissipation.In this paper, the discrete element software can directly observe the coal particles in the tube scraper conveyor motion state, for designers to shorten the product- design cycle, improve the design level. At the same time, it has great significance for the promotion of tube scraper conveyor.