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The pulse-elevator: A pump for granular materials
Acta Astronautica ( IF 3.1 ) Pub Date : 2022-08-09 , DOI: 10.1016/j.actaastro.2022.07.052
Xuan Li , Kevin Worrall , Aditya Vedanthu , Andrew Scott-George , Patrick Harkness

Granular materials include fuels, foods, feedstocks, and raw materials, and they are frequently created in drilling, exploration, and comminution. However, despite this ubiquity, they can be much more difficult to transport than other materials. Screw conveyors can be used, as can bailing, gas-blowing, and vibro-conveyors, but all have issues related to some combination of complexity, inclination, differential friction, and torque reaction. We propose an entirely new concept: a combination of the vibro-conveyor and the Tesla valve. This ‘pulse-elevator’ is a single piece of inert material, it can operate vertically, it does not depend upon frictional interactions, and it is effectively torqueless. This paper describes the mechanism in analytical, numerical, and experimental terms, and then illustrates two successful experimental use cases: powder uplift from a hopper, and the replacement of augering in a rock-drilling application. These cases are particularly relevant for the facilitation of ISRU and subsurface exploration in space.



中文翻译:

脉冲提升机:颗粒物料泵

颗粒材料包括燃料、食品、原料和原材料,它们经常在钻井、勘探和粉碎中产生。然而,尽管无处不在,但它们可能比其他材料更难运输。可以使用螺旋输送机,也可以使用抛丸、吹气和振动输送机,但都存在与复杂性、倾斜度、差动摩擦和扭矩反应的某种组合相关的问题。我们提出了一个全新的概念:振动输送机和特斯拉阀门的组合。这种“脉冲升降机”是一块惰性材料,它可以垂直运行,它不依赖于摩擦相互作用,而且它实际上是无扭矩的。本文从分析、数值和实验方面描述了机制,然后说明了两个成功的实验用例:从料斗中提升粉末,并在岩石钻孔应用中更换螺旋钻。这些案例与促进 ISRU 和空间地下勘探特别相关。

更新日期:2022-08-13
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