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!