Application

TMI specialises in the design and manufacture of mixing devices for a wide range of production processes:

  • Homogenisation
  • Slurrying
  • Flocculation
  • Reagent preparations
  • Mixtures in general: : Liquid/liquid, Liquid/solid, Liquid/gas

To be able to supply the agitator exactly suited to a specific application, TMI designs its devices from 3 fundamental data: type of treatment, products treated and volume to be agitated. The mixer is determined with its technical characteristics.

All stirring wheels produced by TMI are fitted with one or more thin-profile propellers, in order to obtain the best hydraulic efficiency while reducing energy losses. The types and profiles of these propellers are also designed in CAD by Autocad and Inventor (2D or 3D).

AGITATORS TYPE AB

The AB agitator has a shaft-welded impeller driven by a socket system mounted directly to the motor shaft. TMI recommends this type of appliance for small volumes and
simple mixing applications. Agitation is determined by the required application. AB agitators have a 120 or 160 diameter turbine, and can also be secured by a mounting plate or screw-clamp system. We supply with three-phase 50 Hertz tropicalized motors as standard. The standard impeller shaft is made from 316L stainless steel.

AGITATORS TYPE AFS

The twin paddles on the drum agitator fold back to fit through the bung on standard containers. TMI recommends this type of appliance for small volumes and simple mixing applications. The type of agitator is determined by the required application. We supply with three-phase 50 Hertz tropicalized motors as standard. The standard impeller shaft is made from 316L stainless steel. The agitator can be inserted through a 60 mm or wider bung opening for greater versatility if required.

AGITATORS TYPE P

The P agitator has a shaft-welded turbine and is driven by a socket system mounted directly to the gear shaft. The type of agitator is determined by the required application: reagent preparations, homogenisation, polyelectrolyte preparation, etc
P agitators have a 250 or 700 diameter turbine, and can also be secured by a mounting plate or screw-clamp system. We supply with three-phase 50 Hertz tropicalized motors as standard. The standard impeller shaft is made from 316l stainless steel. The P agitator can be fi tted with one or two turbines, and is available with multiple options.

AGITATORS TYPE F

The F-Type agitator has a shaft-welded impeller and is driven by a socket system mounted directly to the gear shaft. The F-Type is designed for fl occulation. It operates at low speed to avoid breaking up the fl ocs while ensuring extremely high fl occulation performance. This fl occulator is available with 250 to 1,000 mm diameter impellers and includes a mounting plate. We supply with three-phase 50 Hertz tropicalized motors as standard. The standard impeller shaft is made from 316L stainless steel. The F-Type agitator is often ordered with the optional variable frequency drive. This fl occulator can be fi tted with one or two impellers and off ers a range of options.

AGITATORS TYPE PPR

The PPR-Type agitator has a retractable paddle turbine attached to the shaft end and is driven by a socket system mounted directly to the gear shaft. The impeller profi le is specially engineered to open out automatically when the shaft begins to turn and fold back when the agitator is switched off . The impeller section can be passed through a bung diameter of just 115 mm. PPR agitators have a turbine up to 500 mm in diameter, and can also be secured by a mounting plate or a bridge mount with handles for IBCs. We supply with three-phase 50 Hertz tropicalized motors as standard. The standard impeller shaft is made from 316L stainless steel. The PPR agitator is available with multiple options.

AGITATORS TYPE PPR FOR LIME MILK

The PPR agitator has a folding turbine screwed to the shaft end and is driven by a socket system mounted directly to the gear shaft. The specially engineered impeller profi le opens out automatically when the shaft begins to turn and folds back when the agitator is switched off . The impeller section fits through a bung diameter of just 115 mm. This agitator is designed for lime slurry IBCs. It features an additional 135 mm turbine impeller on the shaft end to prevent the lime slurry from settling for an optimal homogenous mix.

AGITATORS TYPE MT

The MT agitator has a three-part shaft-end turbine and is driven by a double sleeve on the gear shaft. The type of agitator is determined by the required application: reagent preparations, homogenisation, neutralisation and all mixing operations. This type of agitator is mainly used to generate a radial flow; we usually suggest it when a coated agitator is required.

AGITATORS TYPE M3

The M3 agitator has a three-part shaft-end impeller and is driven by a double sleeve on the gear shaft. The type of agitator is determined by the required application: reagent preparations, homogenisation, neutralisation and all mixing operations. This type of agitator is mainly used to generate an axial flow
In addition, the M3 fl occulates very well at low speed. Its gentle mixing action avoids breaking up the flocs while ensuring an extremely high level of fl occulation.

SIDE-ENTRY AGITATORS

The layout of some tanks prevents the use of top-entry vertical agitators. We have developed a range of side-entry agitators for use with very high cylinder tanks. The MB3 sideentry agitator attaches to the tank wall by a coupling box. It has a shaft-end impeller and is driven by a double sleeve on the gear shaft. A stuffi ng box or mechanical seal, or both, provide the seal. The type of agitator is determined by the required application: reagent preparations, homogenisation, neutralisation and all types of mixing operations.

AGITATORS TYPE ML (LANTERN)

Certain mixing applications require a coupling box to ensure a seal against fl uids or corrosive vapours, or for mounting on large agitators. Coupling boxes maintain the axial alignment of the through-tank unit. They can include roller bearings, lubricators and rotation sensors. The seal is provided either by a stuffi ng box or a mechanical seal, or by both simultaneously.

SCRAPERS

As the name suggests, scrapers sweep along the tank fl oor to gather up sludge in the centre for removal. They consist of paddles screw-mounted to the shaft, which is connected to the gear drive by a fl ange and mating fl ange assembly. The scrapers adapt to any shape and diameter of fl at or pitched tank fl oor. Their low rpm allows tines to be added to the centre to separate sludge from the water more easily, causing high-density matter to fall to the bottom and the water to rise. The tines signifi cantly increase the performance of the scraper.

FLOATING MIXERS

Floating mixers are designed for mixing operations in homogenisation tanks and slurrying in denitrifi cation tanks. When equipped with a variable speed system, they can also be used in fl occulating tanks, drinking water treatment plants, and physical-chemical treatment plants. Floating mixers consist of a low-speed turbine inside a sleeve, attached to the underside of a round, polyester fl oat. Our MF fl oating mixers deliver signifi cant cost savings in civil engineering work and can be used on tanks of varying capacities. They are easy to install and easy to move using the mooring lines.

SUBMERSIBLE MIXERS

The submersible mixer from TMI is a one-piece unit with an impeller driven by an in-water electrical gear motor. The unit is transportable and can be installed on a vertical pole frame. The thin-profi le impeller is designed to produce a circulation fl ow with reduced peripheral turbulence for optimum hydraulic effi ciency. The result is lower electricity consumption than other equipment currently available. This mixer is available with 430 to 1,000 mm diameter impellers and is designed for continuous use. The shaft is sealed externally and internally by two mechanical seals mounted either side of an oil sump.

IN LINE MIXERS

Each mixer consists of a sealed main tank with capacities ranging from a few to several dozen litres, a high-speed agitator for the intimate mixing of effl uents, and a mechanical seal or stuffi ng box. They work by mixing rapidly during the short residence time of the effl uents. This is known as «Flash mixing», which dissipates a large amount of energy for the low volume that is treated. The velocity gradient is usually very high (> 500 s-1).

COATINGS AND SPECIAL MATERIALS

Agitators that operate in aggressive environments require special protective coatings both on the moving mixing parts and on the gear motor. Standard stainless steel agitators may not be rugged enough for applications in highly aggressive environments. Highly advanced coatings are required, and must be compatible with the product being processed. We off er a full range of tailored coating solutions.

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