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Screw ship unloader What you need to know!

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Screw ship unloader is a ship unloader with horizontal screw conveyor, vertical screw conveyor and special reclaiming device without flexible traction components as the main working mechanism. It is a continuous bulk cargo ship unloader. Let's take a look at it briefly!
1. Large energy consumption. When the conveying screw works, due to the friction between the material and the spiral surface, the friction between the material and the trough or the conveying pipe wall, and the friction and stirring between the materials, the unit length of the material is relatively large, which makes the screw ship unloader unit Energy consumption is higher than other mechanical continuous ship unloaders, which is equivalent to grab ship unloaders, but much lower than pneumatic ship unloaders. For the unloading of cement, grain, coal and other materials with less weight, better fluidity, and less abrasiveness, the unit energy consumption is lower, while for the unloading of phosphate, iron ore powder and other materials with heavier and more abrasive properties The unit energy consumption for materials will increase significantly.
2. Simple structure and low quality. The material conveying system of the Screw ship unloader is composed of screw conveyors without flexible traction components. The conveyor has no return branch, and the structure is relatively simple. The vertical arm and the horizontal arm have smaller cross-sectional dimensions. Under the same conditions of productivity as the target ship, the mass of the screw ship unloader is much smaller than that of the grab ship unloader, and it is also the smallest mass of various mechanical continuous ship unloaders. Therefore, the cost of the Screw ship unloader is lower, and the requirements for the carrying capacity of the terminal are lower.

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