Milk silos & very large holding tanks use side entry agitators not necessarily for mixing but to keep the process media moving and keep the milk cool while bottom entry agitators are more common in the Biotechnology sector, where it is a magnetic driven unit (see below). The remaining 10% include Bottom Entry Agitator, Side Entry Agitator and Bottom Entry Mag Drive Agitator. The main advantages of a Top Entry Agitator is that it can handle a larger variance in viscosities and specific gravities and also the fact that the mechanical seal is not in the liquid. What are the different types of agitators and their selection criteria?Īgitators can be simplified into Bottom Entry Agitator, Side Entry Agitator and Top entry Agitator depending on the duty & scale of the application to be mixed.ĩ0% of Agitators are a Top Entry Agitator in API / Chemical / Water industries. There are options for magnetic driven units where there is a hermetic seal as opposed to mechanical. The mechanical seal has a number of options depending on the duty – single/double mechanical seal, dry or wet mechanical seal, gas lift off mechanical seal that is related to the duty involved.Īn agitator shaft is connected to the drive unit (motor & gearbox) and where the impellers used for the mixing are welded or bolted onto. The agitator is mounted onto the vessel or via a supporting bridge in the water industry. An agitator is also used in the Water Industry for adding various chemicals to bring the source water up to drinking water standards What are the various parts or components of an agitator?Īn Agitator is generally made up of a three main components – a shaft with impellers, a mechanical seal and motor with option of gearbox for lower RPM duties. This could be axial pumping, gas induction, flocculating, high viscosity products, high & low shear mixing etc. The agitator imparts energy through mechanical mean by rotating a shaft on which there is an impeller designed specifically for the duty. What is the purpose of an agitator?Īn Agitator is used for mixing different process media – liquids, gases and solids in chemical addition or Pharmaceutical Ingredients.
The components of an agitator in general are the motor & gearbox, shaft & impellers selected for the duty. In summary, it works by rotating an impeller to impart energy to the media which interact and mix. Media include all liquid types, gases & solids (such as salts, powders, granules etc). An Agitator is a machine used in a tank for mixing various process media together.
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