Lechler VarioJet® nozzles belong to the internally mixing two-fluid nozzles. The water is fed axially via a bore hole and split over a cone in a thin liquid film. In the mixing chamber this thin film of liquid is atomized of the atomizing air in fine droplets. Subsequently, the resultant gas-liquid mixture is atomized a second time as it exits via several of circularly arranged bore holes.
The new nozzle design of the VarioJet II series creates a spray jet with a wide spray angle, which is characterized by both a uniform liquid distribution and a fine droplet spectrum combined with low specific air consumption. The large free cross-sections in the nozzle minimize the risk of clogging and reduce maintenance. Through the flow-optimized nozzle housing the resistance of the nozzle against caking in the area between the individual sprays is increased. In addition, the outer dimensions of the nozzles could be greatly reduced with retaining the same performance. Therefore cost savings in the construction of the nozzle lance are possible. By identical outer dimensions of sizes, it is now also possible to share among the nozzles with various performance ratings.
The fineness of the droplet spectrum depends highly on the air/liquid ratio and the pressure level of the two flow rates. In general, the higher the air/liquid ratio and the higher the pressure level of atomizing air and fluid, the finer the droplet spectrum.
Injection volume of the new VarioJet II-6 series:
Injection volume of the new VarioJet II-8 series:
Characteristics of the new VarioJet II series:
Gas cooling in medium- sized and large gas cooling towers and gas-bearing pipes (ducts) e.g. in the cement, lime, glass and iron & steel industry, as well as in power plants.
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