How can I determine the quality of a mixer?

The quality of the mixer can be divided into a number of different quality aspects. The most important quality aspect is the functionality of the mixer. Is the mixer able to mix the product homogeneously enough? What is sufficiently homogeneous is an aspect that is product dependent. Different requirements will be set for the distribution of probiotics in baby milk powder or active substances in medicines than for the distribution of the various components in muesli.

A second important quality aspect is the materials used to produce the mixer. Different requirements will be imposed on a mixer where abrasive or corrosive substances such as salts and acids are used than on mixers where foodstuffs are processed such as coffee, cocoa or flour. But also within these groups there are specific requirements that require certain materials to be used. Materials used to produce mixers include steel, SS304, SS316, hardox and manganese steel.

The quality of the mixer is also determined by specific seals. If products such as silica are used in the mixture, other seals are needed than if plastic granulates are to be mixed. The quality of the mixer is also determined by the choices made with regard to components such as motors, cylinders and valves and electrical components.

Design and manufacture are also essential to the quality of a mixer. Was the design made from the perspective of OPEX or CAPEX? Is the mixer reliable for a long period of use without unplanned downtime? Does the design prevent contamination of the product with oils or fats? In addition, the finish in production is important. Is the welding quality good? Are welds sharpened? Does the Ra value meet the set requirements? Has good preservation been applied such as Viwateq ® so that powders adhere less well to walls and contamination is prevented and cleaning time is shortened.

How often should maintenance be done? What kind of maintenance should be done?

Inspection and preventive maintenance is recommended for every mixer, checking mechanical adjustments, lubricating parts such as bearings, replacing oil and wearing parts preventively will improve reliability and service life.

So there are numerous aspects that play a role in assessing the quality of a mixer.