The pulse-elevator: A pump for granular materials
The pulse-elevator: A pump for granular materials
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DOI：
10.1016/j.actaastro.2022.07.052
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发表时间：
2022-08
影响因子：
3.5
通讯作者：
Xuan Li;K. Worrall;Aditya Vedanthu;Andrew Scott-George;P. Harkness
中科院分区：
文献类型：
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作者：
Xuan Li;K. Worrall;Aditya Vedanthu;Andrew Scott-George;P. Harkness
颗粒材料包括燃料、食品、原料和原材料，它们经常在钻井、勘探和粉碎过程中产生。然而，尽管它们无处不在，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，但所有这些都存在与复杂性、倾斜度、差动摩擦和扭矩反应相关的问题。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”是一种单一的惰性材料，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、数值和实验三个方面描述了这一机理，并举例说明了两个成功的实验应用案例：从料斗中提粉，以及在凿岩应用中取代增压。这些案例与国际空间研究单位和空间地下探索的便利化特别相关。
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.