Application of Autodilution Equipment for Fluid Machine

Abstract

Head loss due to mixing of pesticide liquid in the auto-dilution equipment was considered in this study. At first, on one method in order to inflow at the best condition, inflow angles were 45 and 90 degrees, and sectional area ratio of main pipe to side pipe was 1.0.
A little effects of an inflow angle on the dilution ratio appeared for nozzle diameters of 0.5mm and 1.0mm (Fig. 4). Then, the head loss increased in proportion to pesticide liquid pressure and nozzle diameter at the inflow angle of 90 degree. On the other hand, it increased in order of 0.5, 1.0, 0.7mm of nozzle diameter at the inflow angle of 45 degree (Fig. 5).
Head loss at the nozzle was regarded as one kind of loss due to sudden contraction, and this trend was linearly increased with the rise of pesticide liquid pressure, and increased in order of 0.5, 1.0 and 0.7mm of nozzle diameter.
These results were consistent with the experimental results at head loss of inflow angles of 45 and 90 degree. These data can be available for designing the mixing parts of auto-dilution equipment.
The two dimensional comformal mapping for potential jet flow was applied for the downstream of the nozzle near the outlet of water pipe. This revealed that highly turbulent flow of liquid and gas phases was developed and unsteady two dimensional flow was also seen around it. This results showed the complicate mixing flow of liquid and solid.