Production of Uniform Size Droplets from Large Viscosity Liquid by a Nozzle with Mechanical Shocks.

概要

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Although a technique for production of uniform size droplets from a large viscosity liquid is required in industrial field, conventional methods are available for only low viscosity liquid. This work has been done to develop and investigate a new method for easy production of high viscous uniform droplets. In the method, impingement of nozzle by cam mechanism on a stopper with adjustable gap imposes cyclic shocks on high viscous liquid jet. Using a silicone oil with viscosity of 10000mPa ·s, the effects of liquid flow rate, diameter of nozzle and intensity of shocks on producible range of the uniform droplets were examined. Although the flow rate was in relatively low range, following results were obtained: uniform size droplets were obtained with fairly good uniformity, the maximum fre-quency in producible conditions for uniform droplets increased with icrease of liquid flow rate, and the droplet sizes obtained were kept some constant values independently of the change of velocity of the liquid flow, according to the change of the diameter of nozzle and the amplitude of imposed frequency.
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