Abstract
In mechanical manufacture, air jet is often used to remove the water droplets, particles and residues from workpieces. However, an obvious disadvantage has shown in the energy dissipation caused by the vast flux of air supply. With the purpose of protecting environment and saving the energy, the removal efficiency of water and particle has been concerned.
In this paper the image method of evaluating particle removal and water removal efficiency are presented. Influence of impinging angle, supply pressure, nozzle-plate distance (between the exit of nozzle and impinging plate) on removal efficiency is studied systematically. The results of our experiments show that the efficiency of particle removal and water removal increases with increasing supply pressure. The efficiency of particle removal varies with impinging angle and nozzle-plate distance, optimal ranges can be obtained from these experiments. However the efficiency of water removal is not sensitive to the impinging angle and the nozzle-plate distance
