Lechler rotating cleaning nozzles are based on different operating principles, which should be selected depending on the application. In general, a distinction is made between four operating principles:
Static Static spray balls do not rotate and therefore require more fluid. They are used primarily for rinsing tanks. They are inexpensive to purchase and are very robust.
Free-spinning The cleaning fluid drives the spray head by means of specially positioned nozzle jets. The repeated impacts remove the soil and rinse it from the tank surface. This results in optimum cleaning efficiency at low pressures in small to medium-sized tanks.
Controlled rotation The rotating head is driven by the fluid. A turbine wheel with an internal gear is used to control the rotation. This ensures that the speed remains in the optimum range even at higher pressures. The droplets produced are larger and strike the tank wall at higher speeds. These rotating cleaning nozzles achieve an even higher impact, which is especially important for large tanks.
Gear-controlled The cleaning fluid drives an internal gear by means of a turbine wheel so that the spray head rotates on two axis. The solid jet nozzles mounted on the spray head produce powerful jets. These jets sweep the entire tank surface in a pre-programmed, model-specific pattern during a spray cycle. This requires a certain minimum time. These models generate the highest impact and are therefore ideal for very large tanks with the toughest cleaning tasks.