喷射气举的实验研究

An Experimental Study on Jet Air-Lift Pump

设计出新型气举结构——喷射气举,选用精筛选的河沙(粒径1￣3 mm)作为提升对象,实验研究了喷射气举的扬水能力、扬沙能力和扬沙效率。实验结果表明:喷射气举可有效提升固体颗粒,影响喷射气举扬沙能力和效率的主要因素是进气量和浸入率,存在最优进气量使扬沙量最大,浸入率越高扬沙能力越强。

Designs a new type of air-lift pump （gas-injection pump）. With riversand （diameter 1-3 mm） as the workobject, makes an experimental study on gas-injection pump from lifting water capacity, lifting solid particles capacity and efficiency of lifting solid particles. The experiment shows that gas-injection pump can lift solid particles effectively and the main factors affecting the capacity are the submergence ratio and the flow rate of air supplied： there exists an. optimal value of air supply which makes the flow rate of solid particles biggest and the more the submergence ratio, the stronger lifting solid particles capacity.