The large pumps are connected in series, reaching a final pressure of 30 bar by the 3rd pump. For this reason, some dredge pumps are built with an outer casing. Unfortunately these materials don’t have high elongation properties and are not impact resistant. To resist wear, the pump parts are made from high chromium iron having a hardness of 60HRC. Impellers are designed in multiple categories of 3, 4 and 5 vanes. These pumps are designed to counter wear problems inherent in dredge pumps. In 2011, our company began developing a new range of dredge pumps ranging from 200mm to 1,400mm – the largest size dredge pumps in the dredging industry. Dredge Yard’s largest size dredge pump design Clogged impellers and breaking vanes also pose risks to pump performance. Another challenge is that pump parts wear quickly. The mixture of those materials with pumped water doesn’t behave as homogenous fluid as the soil tends to settle down and slide on the pipe bed depending on the flow speed.
They must carry water filled with mixture of several types of soils like mud, fine sand, coarse sand, gravel, stones, and other debris. Engineering challenges of dredge pumpsĭredge pumps involve more complex engineering challenge than water pumps. Dredge pumps also have the biggest power consumer during operation so efforts to reduce the pump’s power needs through smarter design are critical. The largest size dredge pump is one of the main components of the dredger, and it is critical to achieving production. As the demand for larger dredgers rises, there is a growing need for developing largest size dredge pump that can reach up to 1,800 mm suction diameter.
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