| 摘要 |
The conventional spray shield for use on crop sprayers includes a large cover for the entire spray boom. The cover extends downwardly to the top of the crop being sprayed, and consequently impedes access to the spray nozzles and hides the spray pattern. Thus, the operator of the sprayer is not aware of blocked nozzles. A solution to the problem is to provide individual spray hoods over each nozzle, the hoods having essentially the same shape as the spray produced by the nozzle, i.e., conical with an elliptical horizontal cross section at the discharge end. The hoods are sufficiently short that they terminate above a crop in the use position, so that the sprays are visible and the nozzles are readily accessible.
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