Basics of spraying technique I
Ideal sprayer / accessory for the ideal application
What can I optimise with the ‚ideal‘ sprayer?
Goal: The right sprayer for the right application
Improved effect/efficiency Time saving Saving of chemicals and spray liquid Cost reduction Improved comfort Increased safety Economic use of resources and
protection of enviroment
What do I achieve with the ‚right‘ sprayer?
Customer appreciation / acceptance Professional image creation Securing orders /repeat orders Winning new customers Open new earning segments Creating synergies with other
products (e.g. chemicals)
Criterias for the right choice of a sprayer
Goal: Economic and enviromental sound solutions
Which spray media?• Water solution (pH 7)• Acid (pH 1)• Alkaline (pH 14)• Solvent….
Which unit?• Volume (0.5l till 100l)• Application = Chemical = Material of sprayer• Accessory
Chemical resistance for industrial applications
Basics of spraying technique II
Spray technique ‚Theory and Praxis‘
Trigger-
Sprayer
Variations of sprayers
Hand-
Compression
Sprayer
Knapsack-
SprayerStainless Steel-
Compression
Sprayer
Engine
Sprayer
Major parts of a sprayer
Influence of the nozzle
Spray pattern (Nozzle type resp. nozzle shape)
Spray volume (Nozzle diameter + Pressure)
Troplet size (Nozzle type + Pressure + Volume)
Hollow cone pattern
Uniform coverage (Full cone)
Full jet spray pattern
Flat spray pattern (Fanjet)
Tapered edges
Full coverage edges
Table 1: Spray pattern
Press. in bar 0,8mm 1,0 mm 1,3 mm 1,5 mm 1,65 mm2,0 0,38 0,47 0,61 0,72 0,802,5 0,43 0,52 0,68 0,81 0,893,0 0,47 0,57 0,74 0,89 0,983,5 0,51 0,62 0,80 0,96 1,054,0 0,54 0,66 0,86 1,03 1,134,5 0,58 0,70 0,91 1,09 1,195,0 0,61 0,74 0,96 1,15 1,266,0 0,67 0,81 1,05 1,26 1,387,0 0,72 0,87 1,14 1,36 1,498,0 0,77 0,93 1,12 1,45 1,599,0 0,81 0,99 1,29 1,54 1,6910,0 0,86 1,04 1,36 1,62 1,78
Art.Nr. 28502321 SB 28502322 SB 28502323 SB 28502324 SB 28502325 SB
Flow rate Duro mist nozzle in l/min.:Diameter
• Mist nozzle brass steel plate stainless steel
Duro mist nozzle
Press. in bar XR 8001 XR 80015 XR 8002 XR 8003 XR 8004 XR 8005 XR 8006 XR 80081,0 0,23 0,34 0,46 0,68 0,91 1,17 1,37 1,821,5 0,28 0,42 0,56 0,84 1,12 1,40 1,67 2,232,0 0,32 0,48 0,65 0,97 1,29 1,61 1,93 2,583,0 0,39 0,59 0,79 1,18 1,58 1,97 2,37 3,164,0 0,46 0,68 0,91 1,37 1,82 2,28 2,74 3,65
Art.Nr. 11612801 SB 11612802 SB 11612803 SB 11612804 SB 11612805 SB 11612806 SB 11612807 SB 11612808 SB
Fanjet nozzleFlow rate fanjet nozzle in l/min.:
• Nozzle body plastic / Nozzle stainless steel
Fanjet nozzle
Press. in bar 1,3 mm 1,7 mm 1,3 mm 1,7 mm2,0 0,37 0,45 1,00 1,202,5 0,42 0,49 1,11 1,433,0 0,46 0,54 1,22 1,643,5 0,49 0,61 1,32 1,834,0 0,53 0,66 1,41 2,004,5 0,56 0,68 1,50 2,135,0 0,59 0,70 1,50 2,27
Art.Nr. 28502598 SB 28502597 SB 28502598 SB 28502597 SBArt.Nr. 28502599 SB 28502599 SB
Flow rate adjustable nozzle in l/min.:Adjusted to mist Adjustet to full jet
• Adjustable brass nozzle
Adjustable nozzle
Nozzle Material
VMD (μm) at a pressure (bar) of:
1 1.5 2 3 6
Duro-mist nozzle 0.8 mm Brass/steel 428 298 230 139 88
Duro-mist nozzle 1.0 mm Brass/steel 373 263 200 140 94
Duro-mist nozzle 1.3 mm Brass/steel 311 207 172 137 110
Duro-mist nozzle 1.5 mm Brass/steel 311 210 173 135 122
Duro-mist nozzle 1.65 mm Brass/steel 278 199 163 134 122
Adjustable nozzle 1.7 mm Brass 266 160 134 110
Adjustable nozzle 1.3 mm Brass 707 535 439 491
Droplet size (μm) Classification
51-100 Mist
101-200 Fine spray
201-300 Medium spray
>300 Coarse spray
Table 2: Droplet size diameter of nozzle
As bigger the diameter and lower the pressure, as bigger the troplet size!
Nozzle Material
Tropfenanteil <105 μm in % bei Druck (bar) von
1 1.5 2 3 6
Duro-mist nozzle 0.8 mm Brass/steel 3,8 10,6 16,2 35,6 61,8
Duro-mist nozzle 1.0 mm Brass/steel 7,4 13,1 21,0 35,4 56,3
Duro-mist nozzle 1.3 mm Brass/steel 8,3 19,1 26,6 36,6 47,9
Duro-mist nozzle 1.5 mm Brass/steel 8,2 19,1 26,5 37,6 42,9
Duro-mist nozzle 1.65 mm Brass/steel 10,6 21,3 28,6 37,7 43,1
Adjustable nozzle 1.7 mm Brass 9,7 25,3 33,7 47,0
Adjustable nozzle 1.3 mm Brass 1,6 2,6 4,4 2,0
Table 3: Troplet part <105 μm in %
(Drift and aerosol sensitivity)
As smaller the nozzle diameter and as higher the pressure, as higher the small troplet share
Application Nozzle Type Application l / ha spay volume at 50 cm reach *
Spray ApplicationCone
(full or hollow)
Fanjet DeflectorPress
ure (bar)
Wind speed
(m/s)
Iso
Düse
015
Iso
Düse
02
Iso
Düse 03
Iso
Düse 04
Iso
Düse
05
Herbizide,System Fungizide
Ground novery good
very good
1.0
0.8
0.34 l/min
140
0.46 l/min
190
0.68 l/min
280
0.91 l/min
370
1.14 l/min
460
1.0 110 150 230 300 370
Kontakt Fungizide,Insektizide
Groundvery good
very good
good 2.0
0.8
0.48 l/min
200
0.65 l/min
265
0.96 l/min
400
1.29 l/min
375
1.61 l/min
470
1.0 160 210 320 420 520
Kontact FungizideInsectizide
Tries and bushes
very good
good no 3.0
0.8
0.59 l/min
250
0.79 l/min
325
1.18 l/min
490
1.58 l/min
650
1.97 l/min
810
1.0 200 260 390 520 650
*) eine Strahlweite von 1 m halbiert das angegebene
Sprühvolumen
A) Anwendung bestimmt den Düsetyp & Druck (prüfen via l/min)
B) Geschwindigkeit festlegen
C) Gewünschtes Sprühvolumen bestimmt die Düsengrösse
Table 4: Nozzle and spray volume
(for good performance and safety)
Birchmeier Sprühtechnik AG / 2007 ©
www.birchmeier.comwww.birchmeier.com
Thank you very much for your attention!