Insights cone nozzle
Cone nozzles produce a cone-shaped jet. These nozzles have a parallel or conical hollow space called ‘turbulence chamber’ between the conveying unit and the disc.
The core consists of one or more angled channels leading into the turbulence chamber and giving a rotatory motion to the fluid before it comes out from the disc. Nozzle jet features depend on turbulence chamber size.
Classic nozzles have separate core and disc which are usually spaced by a rubber gasket to be compressed at different degrees during nozzle installation. Different spacing values between core and plate cause different jet opening angles, which in turn cause irregular product spraying. Another possible cause for irregular product spraying is a wrong core-disc size matching. To solve all these problems, a nozzle including all properly sized and positioned parts has been developed. Therefore, it ensures accurate spraying angles and flow rates.
Examples of cone nozzles
Cone nozzle consisting of conveying unit and disc.
Hollow cone nozzle
Hollowcone nozzles produce a crown ground pattern with inner drops having a diameter which is 2-3 times smaller than the diameter of outer drops. Their spraying angle is usually between 40° and 80°, whereas their spraying diagram shows a deeper depression in its central section.
These nozzles can be installed both on spraying booms and orchard blowers.
Hollowcone Ceramic ISO 80°
Correct assembly of the HCC, HCI and FCC nozzles on the brass nozzle holder
The suggested torque ranges from 5 to 10 Nm. This refers only to the use of a threaded ring nut and not to that of a quick fitting nozzle cap.
Correct height of cone nozzles from the target (h)
Comparison between 80° – 60° – 40° nozzles
Chart data refer to ISO 035 nozzle at 3 bars. Diagram also shows that HCI 40 nozzle spray includes a lower amount of droplets prone to drift. At the same time, bigger drop size does not increase and therefore leaf surface washout is reduced.
*D10/50/90= 10/50/90% of the sprayed fluid has drops with a diameter below or equal to the given value.
Choice of spraying angle Depending on distance to The vegetation
By using nozzles with different spraying angles, it is possible to optimise the spray overlapping on the vegetation and the exploitation of the air produced by the fan, reducing product waste.