In the coal transportation systems of coal mines and coal preparation plants,chutes are the main connecting components for conveying,storing,transferring,screening,and crushing equipment.These compo-nents are continuously subjected to the scouring and impact of raw coal flow during operation,which can eas-ily lead to wear,corrosion,and leakage of wall board materials.Moreover,the wear and corrosion of chutes can cause coal flow blockages in the downspouts,severely affecting the normal operation of the coal transpor-tation system and polluting the environment of the transportation system.At the same time,it may increase the workload and production cost arising from the chute maintenance,which affects the work safety of enter-prises.An anti-collision chute structure design scheme is proposed to prevent the coal flow from directly im-pacting the chute and the scraper conveyor box.Using the ANSYS simulation software,a 1:1 simulation of the actual handling capacity on-site was performed to simulate the feeding effect.The principle involves later-al buffering to receive the coal,spiraling down without dead angles,and avoiding coal accumulation.It fully utilizes the kinetic and potential energy conversion of moving coal blocks for self-scouring chutes,preventing coal from sticking and maintaining a certain speed for the falling coal.
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