| 摘要 |
The device is provided to spray essentially liquids for the treatment of plants, but it can also spray solids in powder form and/or in suspension, for other uses, such as lubrication, waxing, etc. The device includes a tank (1) to which is coupled a flexible hose (3) carrying at its free end the spraying nozzle (6), said tank (1) being associated to a compressor (9) to maintain constant the pressure inside the tank, the compressor (9) being actuated by a motor (12) supplied by an electric battery (13), all of which being set in operation through a pressure switch (14) situated in the tank (1); when the pressure switch (14) detects a pressure drop within said tank (1), it starts the motor (12) and consequently the compressor (9) in order to send more pressure to said tank (1), thereby maintaining the product at a constant pressure so as to obtain a uniform spraying. The device may be mounted on wheels to facilitate its transportation, and is characterized in that the tank (1) may be comprised of two parts (21 and 22), coupled to each other, so that between said two parts there may be arranged an elastic membrane (29) determining two sealed compartments (30 and 31), the first one being intended to contain air and the second one containing the product to be spread.
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