针对过程工业体系复杂多变的特点，开发了新型大双叶片宽适应性搅拌器，且通过实验建立了不同结构参数下的单位体积功率与混合时间数的关系曲线，确定了新型大双叶片搅拌器的优化结构，并与目前工业上应用较广的双螺带搅拌器和 FZ 搅拌器进行了对比。实验结果表明，新型大双叶片搅拌器的混合时间数随单位体积功率的增加而下降，但下降幅度在高黏体系中会变小；在消耗相同单位体积功率的前提下，当新型大双叶片搅拌器的结构为上下叶片全开栅格、互成45°夹角、轴向间距比0.09、离底距离比0.19~0.24时，其混合时间数较小，混合速率较快；在达到相同混合效果的前提下，新型大双叶片搅拌器较同规格的双螺带搅拌器和 FZ 搅拌器的功率消耗更少，节能效果明显。此外，新型大双叶片搅拌器开设栅格必须兼顾强度的要求。%Considering the complexity and variation of mixed system for many occasions of process industry, a novel large-double-blade impeller with wide adaptability was developed, and its performance evaluation curves about mixing time number changing with special volume power consumption under different structural parameters were also constructed experimentally. These curves indicate that the mixing time number of novel large-double-blade impeller decreases with increasing special volume power consumption, whereas the rate of decline tends to be smaller in higher viscosity system. Under the condition of same special volume power consumption, the novel large-double-blade with fully open grid,α=45°, H/d=0.09 and C/d=0.19~0.24 has relatively better mixing performance. However, the mechanical strength of novel large-double-blade impeller with fully open grid could not be ignored and should be paid more attention. In addition, the optimum large-double-blade impeller was compared with double-ribbon impeller and FZ impeller with the same dimension, which are used extensively in process industry, and the comparison showed that the novel impeller consumes less power to achieve the same mixing performance than the other two mentioned impellers.
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