Abstract
The particle suction performance of reverse blowing pickup mouth is studied by Computational Fluid Dynamics (CFD). The inhalation test of dust particle and large particle were studied by simulation, and a theoretical arithmetic design discipline was put forward. The result shows that theoretical arithmetic can be used as a preliminary selection guide. The front inlet means velocity increases with the increasing of the diameter-length aspect ratio (iDL). While the Outlet mean velocity and the pressure decrease with the increase of iDL. The front inlet mean velocity from 48.5m/s down to 40.2m/s when iDL is from 0.11 to 0.16. The shorter the residence time is, the large particle can be inhaled easier. The residence time is 1.83s, which is 0.29s shorter than 2.12s in the same position of the 160mm diameter when the brick is on the left side of the driving direction. While the residence time is 1.13s, which is 0.19s shorter than that of 1.32s in the same position of 160mm diameter when the brick is in front of the Outlet.
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