AE/AEH type gravel pump is mainly used for the continuous transportation of strong abrasive materials that cannot be transported by general slurry pumps due to the large particles. It is suitable for dredging dredging, dredging river channels, mining and metal smelting slag transportation, etc. Among them, the AEH type is a high-lift gravel pump. The pump adopts a single pump shell structure connected by cassette, and the flow channel is wide and smooth. Its flow components are made of wear-resistant materials such as hard nickel and high chromium. The discharge outlet direction of the pump can be at any position of 360 ", which has the advantages of easy installation and use, good cavitation performance and anti-abrasion.