| 摘要 |
<p>A spray arrangement including means to form and direct a spray of liquid droplets and means to apply an electrostatic charge to droplets in said spray, said charge applying means including an insulating body to support a spray-charging electrode in association with the spray-forming means, the spray-forming means (10) forming the spray hydraulically, the body (20) having a smoothly-constricted bore (26, 27, 28) for the free passage of spray with the electrode (23) housed to expose only inward-facing electrode surface (28) as the constriction to passing spray (40) for the acquisition of charge therefrom, the bore surface turning back upon itself (29) as it expands beyond the constriction to form an end of the body, the end of the body where the surface turns back upon itself (29) and the part of the bore remote from said end being formed to assist the shedding of liquid (22, 51, 52). The arrangement is suitable as a dairy sprayer to direct charged spray upwardly from said turned-back end on to the teats and udder of a dairy animal such as a cow, ewe or goat.</p> |
