Different Types of Agitators and tanks

What are The Different Types of Agitators and How to Choose


Agitators play a crucial role in various industries by facilitating the shaking or stirring of liquids and mixtures. They find extensive use in chemical, pharmaceutical, food, grease, metal extraction, paint, adhesive, water, and cosmetic industries. This article provides an overview of agitators, their types, selection criteria, and applications.

Agitator Definition:

An agitator is a mechanical device designed to shake or stir liquids and mixtures. It employs mechanical energy to mix different process media effectively, promoting chemical reactions, enhancing heat transfer, maintaining homogeneous liquid bulk, dispersing immiscible liquids, and keeping products in a mixed state until used.

Different Types of Agitators

Types of Agitators:

  1. Paddle Agitators:
    Paddle agitators are the simplest types, featuring paddle-shaped blades. They are suitable for laminar flow fluids with minimal shearing requirements. These agitators are adjustable and typically contain an equal number of forwarding and reversing paddles, facilitating ingredient movement within the vessel.
  2. Anchor Agitators:
    Anchor agitators are widely used for mixing highly viscous and non-Newtonian fluids. Resembling an anchor in shape, they are commonly mounted in tanks or vessels with conical or rounded bottoms.
  3. Propeller Agitators:
    Propeller agitators are ideal for low-viscosity products, offering efficient homogenization, suspension, and dispersion. Operating at medium to high speeds, these axial flow agitators prevent the deposition of solid particles, making them suitable for solid-in-liquid suspensions.
  4. Blade Type Agitators:
    Blade-type agitators are suitable for low and medium-viscosity fluids. They are axial type agitators and facilitate effective mixing in these applications.
  5. Turbine Agitators:
    Turbine agitators excel in emulsification and dispersion of fluids at high speeds. They provide highly effective mixing across a broad viscosity range, combining rotation and centrifugal motion during operation.
  6. Helical Agitators:
    Helical agitators feature blades arranged in a helix structure, resembling a threaded screw. They provide vigorous motion within vessels or tanks, making them widely used in polymer industries.

How to Choose

Choosing the right type of agitator for your tank depends on several factors, such as:

  • The volume, shape, viscosity, density, rheology, and phase composition of the media
  • The mixing objective, such as homogenization, dispersion, emulsification, dissolution, reaction, or heat transfer
  • The cost, maintenance, and operation of the agitator over its lifespan

Plygen Industries supplies various vessels with agitators installed and can have customized agitator configuration according to your application need, such as mixing tanks, homogenizers and reactors. Contact us for your equipment need. With industrial-leading short lead time, we can quickly deliver your order to help you jump-start your project.