Nozzles for Tank Washing
Engineering Consideration 2- Which combination of spray cleaning is required?
In order to achieve any of the 5 levels of cleaning discussed in the "levels of cleaning" page there are 3 basic types of cleaning process. The three processes may require different nozzles as the properties of the spray necessary for each differs.
1- Rinse applications require a spray pattern that will deliver the rinsing fluid over a large areas because rising does not rely on the kinetic energy of the fluid to dislodge residue. As such, a low impact high coverage spray pattern is required.
The TW range of spiral nozzles would be a suitable choice as would the static spray balls. Both nozzles are discussed in detail in the "static nozzles" nozzle design section accessible by the grey menu to the right hand side of this page.
Click on the boxes below for further details
2- Wash applications rely on the impact of the spray to help dislodge residue. The full cone spray pattern nozzles distribute the kinetic energy of the fluid being sprayed over a large area and this reduces impact. In order to achieve the required impact other spray patterns are required. Typically a flat fan spray pattern will be used. The problem is that this only cleans a thin line so the solution is to rotate the nozzle such that the whole tank is cleaned with a relatively high impact spray.
Bete produce a number of different rotary flat fan nozzles. Further information on these products can be found by using the grey "Tank Washing Nozzle Designs" menu to the right hand side of this page or by clicking on the product boxes below
3- High impact washing is used to dislodge really stubborn residue. For these applications only a solid stream spray pattern is appropriate as this delivers the most kinetic energy per unit area (i.e. has the most impact). The problem is that now only a small dot is cleaned, so more sophisticated rotation patterns are required to ensure that each part of the tank is cleaned.
The BETE Hydro Whirl Oribtor is a versatile solid stream jet washing system that is highly configurable to give a great range of different impacts, cleaning cycle times and effective cleaning jet lengths. Further details cann be found by clicking on the product box below or by clicking on the "Rotary Solid Stream" nozzles section in the grey menu to the right hand side of this page.
Multistage Clean Cycles
Many tank cleaning cycles will require a combination of different types of spraying in order to achieve the desired level of cleaning. For example, a typical disinfection process would require a preliminary wash cycle spraying water to remove residue, followed by a rinse cycle with a disinfecting chemical and possibly a final water rinse cycle to remove any traces of the chemical. Different stages may require different nozzles.