| 摘要 |
<p>A spray apparatus for the treatment of a harvested crop, the apparatus including a high voltage electrostatic spray head (50), a sprayhood (30) surrounding the sprayhead (50) and having an aperture opposite the sprayhead and insulating means (28, 29) to suspend the sprayhood with the aperture adjacent a region of a conveying path (11) to establish and maintain the sprayhood (30) covering said region of said conveying path (11) the sprayhood (30) having on the outside an insulating cover (34) and inside the cover an extensive insulated electrode (41) extending around and above said aperture, the electrode (41) being energisable in operation to a potential similar to that applied to the sprayhead (50), whereby the support means and electrode together permit the application of an electrostatically charged spray from the sprayhead (50) in a controlled manner throughout said region of the conveying path (11) under the sprayhood (30) to a quantity of crop conveyed past on the conveying path in a regular manner.</p> |
