Spray nozzles must meet varying requirements. BETE Europe will consult with you in selecting the optimal nozzle for your specific application.
The result of the atomisation process is primarily influenced by the nozzle's design.
The following spray forms are frequently used in spraying techniques:
With a full-cone nozzle, the impact area will be completely covered by a single spray. With axial full-cone nozzles, this spray pattern is created as a result of installing a so-called swirl body. The full-cone nozzles subjected to the tangential inflow have no installed components in the flow channel and by means of rotation and defined swirl chambers produce a full-cone spray pattern. The spiral nozzle represents a special design form.
If annular impact area is created, this is referred to as a hollow-cone spray pattern. As a rule, the fluid flows tangentially into the swirl chamber. There the fluid is displaced by rotation and a fluid film is created, which disintegrates into individual droplets immediately after the nozzle orifice. Axial hollow-cone nozzles, in which the fluid flows axially into the swirl chamber where it is rotated by means of a special swirl insert, are the exception.
Due to the special outlet geometry, flat fan nozzles initially form a closed fluid film, which in the course of processing disintegrates into individual droplets. Depending on the design of the outlet geometry, this produces an elliptical or rectangular impact surface.
Because of their functionality, tongue nozzles have a special place among flat fan nozzles: The fluid stream exits axially through a cylindrical outlet bore and then is diverted by means of an external deflector surface.
A corresponding design of the nozzle orifice produces a solid fluid stream characterized by high stream stability and high impact intensity. The actual spraying process, the disintegration of the individual droplets, is undesired with solid stream nozzles and is suppressed in a targeted manner by the nozzle's geometry.
Pneumatic atomisation nozzle:
As a result of a combination of replaceable air and fluid caps, pneumatic atomisation nozzles are able to produce flat-fan, hollow-cone, and full-cone spray performances. The droplets produced by pneumatic atomisation nozzles are among the smallest achievable in industrial spray technology.