Parametric Design of Reverse Blowing Pickup Mouth Based on Flow Simulation

Abstract

Based on the analysis of structural parameters, the flow field of reverse blowing pickup mouth was calculated with CFD. The dust collection efficiency was validated with gas-solid phrase flow. The results show that the diameter of outlet or the dip angle increases respectively when iD1B ≤ 0:45 or ≤ 110 ◦ . Airflow velocities of four narrow slots (front, rear, left and right) increase; With the sweeper-traveling speed increasing overall removal efficiency and grade efficiency decrease. Especially for grade efficiency, sweeper-traveling speed has great effects on large size particles, while it has slight effects on small size particles under the same operating conditions.