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- Sprayer Stainless 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

Mist nozzle brass steel plate stainless steel Duro mist nozzle

Nozzle body plastic / Nozzle stainless steel Fanjet nozzle

Adjustable brass nozzle Adjustable nozzle

NozzleMaterial VMD (μm) at a pressure (bar) of: Duro-mist nozzle 0.8 mmBrass/steel Duro-mist nozzle 1.0 mmBrass/steel Duro-mist nozzle 1.3 mmBrass/steel Duro-mist nozzle 1.5 mmBrass/steel Duro-mist nozzle 1.65 mmBrass/steel Adjustable nozzle 1.7 mmBrass Adjustable nozzle 1.3 mmBrass Droplet size (μm)Classification Mist Fine spray Medium spray >300Coarse spray Table 2: Droplet size diameter of nozzle As bigger the diameter and lower the pressure, as bigger the troplet size!

NozzleMaterial Tropfenanteil <105 μm in % bei Druck (bar) von Duro-mist nozzle 0.8 mmBrass/steel3,810,616,235,661,8 Duro-mist nozzle 1.0 mmBrass/steel7,413,121,035,456,3 Duro-mist nozzle 1.3 mmBrass/steel8,319,126,636,647,9 Duro-mist nozzle 1.5 mmBrass/steel8,219,126,537,642,9 Duro-mist nozzle 1.65 mmBrass/steel10,621,328,637,743,1 Adjustable nozzle 1.7 mmBrass9,725,333,747,0 Adjustable nozzle 1.3 mmBrass1,62,64,42,0 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

ApplicationNozzle TypeApplication l / ha spay volume at 50 cm reach * SprayApplication Cone (full or hollow) FanjetDeflector Press ure (bar) Wind speed (m/s) Iso Düse 015 Iso Düse 02 Iso Düse 03 Iso Düse 04 Iso Düse 05 Herbizide, System Fungizide Groundno very good l/min l/min l/min l/min l/min Kontakt Fungizide, Insektizide Ground very good good l/min l/min l/min l/min l/min Kontact Fungizide Insectizide Tries and bushes very good goodno l/min l/min l/min l/min l/min * ) 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 ©

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