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- Title
上吸风碾米机环形风道内颗粒运动特性.
- Authors
王立宗; 余南辉; 范吉军; 张艺凡; 刘泽军; 张永林
- Abstract
For the problem that the rice bran and broken rice in the horizontal rice mill cannot be separated and collected, a topsuction rice mill with an annular duct was designed. The CFD-DEM coupling method was used to study the flow field and particle motion in the annular duct, the test prototype was established equi-proportionally, and the particle motion in the prototype was observed by PIVlab and compared with simulation results. The results show that when the wind speed of the top suction fan is 6 m/s, the wind speed in the annular duct is evenly distributed, and the average flow velocity is within the suspension speed of rice bran and broken rice. The particle motion characteristics observed in experiments and simulations were similar. Rice bran floated up in arc path and was discharged from the top suction port, and the partition can effectively prevent rice bran falling; broken rice was accelerated downward and was discharged from the lower air inlet.The maximum vertical velocity of rice bran was located in the middle of the duct, about 1.5 m/s; the maximum vertical falling speed of broken rice was near the lower air inlet, about -0.95~-1.1 m/s. This research has positive significance for the improvement of rice mill function and technology.
- Publication
Packaging & Food Machinery, 2022, Vol 40, Issue 2, p25
- ISSN
1005-1295
- Publication type
Article
- DOI
10.3969/j.issn.1005-1295.2022.02.005