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本文是在日本专利吸气式涡轮的启发下,提出对泵(E)型表面曝气叶轮改进的试验。一、泵(E)型叶轮(Φ288)曝气过程(图1) 叶轮出水的上部可以跃出水面,形成扬水区Ⅰ,在空中随着半径增大而分裂成细股水流,与空气接触。水股落入水中时,带入较多气泡。这是叶轮充氧的主要部分。叶轮出水的下部,由于射流与水体进行动量交换,在射流边界处有较大的速度梯
Inspired by the Japanese patented suction turbine, this paper proposes an improved test for the surface aeration impeller of the pump (E). First, the pump (E) impeller (Φ288) aeration process (Figure 1) The upper part of the impeller effluent can leap out of the water surface, forming a lift area I, split into a fine strand of water in the air as the radius increases, in contact with the air. When the water stock falls into the water, it brings in more air bubbles. This is the main part of the impeller oxygenation. In the lower part of the impeller, there is a large velocity ladder at the jet boundary due to the momentum exchange between the jet and the water body.