| 摘要 |
Apparatus for electrostatic spraying of liquid pesticides from a vehicle comprises a coupling 12 for receiving a container 10 and a system for conveying liquid therefrom to one or more sprayheads 16, the system including flow control means (such as an electrically-controlled pump 14 or a valve) responsive to means carried by the container, so that liquid can only flow when the correct container is correctly installed. On installing the container pairs of contacts are connected so that the correct voltage can be applied (via preset variable resistance 36). Further contacts complete a circuit to high voltage generator 20 connected to the nozzles 16, which are of electrically- conducting plastics. A system for automatically mixing two liquids and/or a diluent is also described (Fig. 3, not shown), as are systems for indicating malfunctions such as a blockage or short-circuit, (Figs. 4, 5, not shown). <IMAGE> |
