Device for delivering, with an adjustable flow rate, a liquid product such as a product for treating plants, and distributing apparatus, working by spraying, comprising this device

摘要

Device for delivering liquid by gravity, inserted into a circuit for transporting a pressurised liquid, including a first tank 9 connected at its base to the delivery circuit 5 of the pump 3 and including an out-flow opening 14 connected via the pipe 15 to the main tank 1 through which it is open to atmosphere. A second tank 17, located inside the tank 9, communicates at its top with the tank 9 at a level below the opening 14, and is connected at its base via the pipe 6 and through the control valve 8 to the spray nozzle 7 located in the neck of a diffuser 23 supplied moreover with pressurised gas and in the region of which neck emerges at the same time the nozzle 22 which independently receives the support liquid. <IMAGE>