滚筒-栅条式银杏脱壳机结构参数的优化

为了提高银杏果脱壳品质和效率,研制了一种滚筒-栅条式银杏脱壳装置,通过对不同含水率银杏果的脱壳对比试验,发现脱壳率和破仁率主要取决于转子转速、滚筒直径、栅条间隙。采用中心组合试验设计方法进行了银杏脱壳试验,建立了银杏脱壳率和破仁率与转子转速、滚筒直径、栅条间隙之间的数学模型,并采用响应面优化分析和多目标优化法,得到了滚筒-栅条式银杏脱壳装置的最佳工作参数。结果表明:当转子转速为180r/min,滚筒直径为182mm,栅条间隙为10.5mm,含水率为12.6%时,银杏脱壳率为92.80%,破仁率为8.10%。该装置设计为银杏果脱壳生产提供了新的方法。

Optimization of structure parameters of cylinder-bar type shelling device for ginkgo biloba

In order to improve the quality and efficiency of ginkgo shelling, a cylinder-bar shelling device for ginkgo was developed. According to the comparision of shelling experiments of ginkgo with different moisture content, it was found that the shelling rate and kernel-breaking rate depend mainly on the rotor speed, cylinder diameter and grid clearance. The ginkgo shelling test was conducted by central combination method. A mathematical model which reflected the relationship between ginkgo shelling, breaking rate and rotor speed, cylinder diameter, grid clearance was established. And the optimal working parameters of the cylinder-bar ginkgo shelling device were got by applying the response surface analysis and multi-objective optimization method. The result showed that ginkgo shelling and breaking rate could reach 92.80% and 8.10% respectively under the condition of rotor speed 180r/min, cylinder diameter 182 mm, grid clearance 10.5 mm and moisture content 12.6%. The device proposed offers a new approach for the ginkgo shelling production.