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In industrial production, whether it is food or beverage, manufacturers need to thoroughly clean storage tanks to avoid contamination and comply with health and safety standards. To avoid dismantling and rebuilding the equipment that needs to be cleaned, cleaning in place (CIP) methods are used in most cases, using different types of nozzle technology. CIP also eliminates the need for operators to enter tanks or other enclosed spaces for manual cleaning. In this article, we outline the differences between static and rotary tank cleaning heads to help determine the most cost-effective and efficient solution to fit financial and environmental goals.

Tank cleaning heads are specially designed to wash and sanitize industrial equipment such as tanks, cans, scrubbers and containers of all sizes. These tank cleaning heads are mainly divided into two types: static and rotary. The rotary type can be divided into free rotation, control rotation and gear control.

Static tank cleaning head

Static nozzles do not rotate, are the simplest type of tank cleaning equipment and are widely used in many industries due to their reliability. The liquid sprayed by the static nozzle hits the inner wall of the tank in a predefined cleaning pattern, which is the result of the holes drilled in the nozzle. This free-fall film can clean the tank walls, but it takes a relatively long time and can lead to overuse of water and chemicals. Due to their low impact and high volume of fluid requirements, static tank cleaning heads are suitable for small tanks and processes that require the elimination of easy-to-clean fluids and non-sticky products.

Free rotating tank cleaning head

A free-spinning tank cleaning head can rotate, with the fluid itself driving its motion, creating a rotating spray pattern. The operating pressure directly affects the rotational speed and must be limited to prevent the liquid jet from breaking into tiny droplets and losing its impact on the tank wall. Free-spinning tank cleaning heads can reduce water and chemical usage by up to 30% compared to static tank cleaning heads while cleaning tanks faster, reducing downtime. It is worth noting that the rotating tank cleaning head is suitable for larger tanks with a radius of up to 6 meters, but may not be effective in cleaning more difficult residues, but can provide 360 degrees of repeated cleaning coverage.

Control Rotating Tank Cleaning Head

The controlled rotating tank cleaning head is kept in motion by friction drive, the low speed keeps the spray beam compact, does not break up into droplets, and transfers all its energy in the form of impact to the tank wall. This nozzle technology can provide additional benefits such as reduced water and chemical usage while reducing cleaning cycle times. The nozzles that control the rotating tank cleaning head produce larger droplets with higher velocity to effectively remove tough, heavy dirt. For larger or more complex tanks, controlled rotating tank cleaning heads are more water and chemical efficient than free rotating tank cleaning heads, with faster cleaning cycles and greater impact. In addition, the control of the rotating tank cleaning head ensures thorough cleaning of the entire tank surface with high mechanical impact.

A different approach may be required for each application. Here are a few things to consider when choosing the right cleaning head for your application:

Is the product water soluble and easy to clean?
The size of the storage tank?
Are there any obstructions in the tank that prevent direct cleaning fluid impingement?
Is reducing water and chemical use a priority for the company?

In general, static nozzles can still provide excellent cleaning results for simple cleaning tasks on smaller tanks or containers, so if the product is water soluble with a light residue, this may be a good choice. Static spray balls can also be a good solution if you have larger traffic rates

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