Industrial Mixers Information

Industrial mixers use a shaft, screw, blades, ribbons, impellers or propellers to mix industrial materials such as adhesives, chemicals, construction materials, minerals, coatings and paints. They are also used in food, beverage, pharmaceutical, and water treatment applications. Industrial mixers force sediment to flow in one direction and can intensify physical and chemical processes.

 

 Ribbon Blender image                    Paddle Mixer image                 Double Arm Sigma Blade image

     Image credit: Bepex                                   Image credit: Bepex                                Image credit: Jaygo, Inc.

 

 

 

Modes of Operation

 

  • Batch mixing is the simplest mode of operation. The industrial mixer is filled with media and product mixing is allowed to proceed. When mixing is complete, the vessel's contents are emptied for downstream processing. The mixer is then cleaned and refilled for mixing another batch. With continuous-feed industrial mixers, the media to mix is added continuously as mixed fluid is removed.
  • In Continuous-feed industrial mixers, the media to mix is added continuously as mixed fluid is removed. This type of mixer is suitable for production applications because it can run for long periods of time without being shut down.

 

                                  

Bulk Material Mixing System. Video credit: National Bulk Equipment, Inc. / CC BY-SA 4.0

 

 

 

Types 

 

  • Screw mixers use a rotating screw that moves around the periphery of a conical hopper.
  • Fluidized-bed homogenizers are durable vessels which fluidize the complete product bed.
  • Impeller mixers and propeller mixers use vertical blades attached to a horizontal disc.
  • Paddle mixers have a horizontal rotating shaft with fixed arms and paddle-shaped feet.
  • Planetary mixers have two mixing blades that rotate around individual shafts.
  • Ribbon mixers have a ribbon-shaped, counter-transport mechanism.
  • Static or motionless mixers consist of fins, obstructions, or channels that are mounted in pipes.
  • Turbine mixers include a wide range of general-purpose mixing equipment, operating at reduced speeds via an enclosed gear drive, with one or more multi-bladed impellers mounted on an overhung shaft.

 

Paddle Mixer diagram            Ribbon Blender diagram            Double Cone Blender diagram   

 

 

Industrial Paddle Mixer                                         Industrial Ribbon Blender                                 Industrial Double Cone Blender 

 Image credit: Wikipedia                                          Image credit: Wikipedia                                     Image credit: Wikipedia

 

 

 

Industrial mixers use agitators, homogenizers, kneaders, mullers, tumblers and drums. Some machines use a rotor-stator, a single rotor, or a twin rotor. Homogenizers are mechanical devices that create a stable, uniform dispersion of an insoluble phase within a liquid phase. There are many different types of tumblers and drums. Examples include double-cone tumblers, twin-shell tumblers, and horizontal drums. A rotor-stator is a single-shaft industrial mixer with an impeller rotating in close proximity to a stationary housing. They are particularly effective at chopping coarse particles such as rubber or flake resin. Single rotor and twin rotor devices consist of one or two shafts, respectively, with paddles or screws. Shaft speeds for these industrial mixers ranging from moderately low to relatively high.

 

 

Standards

 

 

Following is a selection of standards applicable to industrial mixers.

 

Process Industry Practices (PIP) RESM003  Specification for Mixers and Agitators

 

Image credits:

 

Bepex  | Jaygo, Inc.

 

 

 


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