INDUSTRIAL AGITATORS

At Naffco Controls we offer our clients all the knowledge acquired over more than thirty years manufacturing industrial mixers, providing high quality equipment designed to perform under the most demanding conditions.

Industrial mixers are rotating machines that are used to mix and homogenize two or more products with different or equal phases inside a tank, creating a flow between the liquids or between liquids and solids so as to obtain other products already mixed and homogenized for the following purposes:

Solid-liquid mixtures
Soluble powders: dissolution & homogenizing.
Non-soluble powders: maintaining in suspension, homogenizing & dispersion.

Liquid-liquid mixtures
Miscible liquids: maintaining in suspension, homogenizing & dilution.
Inmiscible liquids: emulsion.

Complex rheology of viscous mixtures
Maintaining in suspension, dissolution, homogenizing, dispersion, heat transfer & grinding

Every industrial mixer consists essentially of an engine, a reduction gearbox, a drive shaft, and a driving part designed according to the characteristics of the products and the needs of the mixture.

AGITATORS RANGE

The selection of the type of agitator to be used stems from the analysis of a certain number of parameters related to each process:

Type of mixing and position.
- Axial flow rotors.
- Radial flow rotors.
- Mixed flow rotors.
- Rotors for dispersion and emulsion.
Geometry of the tank (dimensions, type of assembly).
Rotation speed (related to the intensity of the mixing).
Mixing intensity (related to the speed of rotation).
Physical conditions imposed by the process (pressure and temperature).

The driving parts are classified according to the type of flow they produce, their pumping capacity, and their shear effect.

MARINE PROPELLER (AXIAL FLOW)

Rotation speed 1.000–1.500rpm.
Non-viscous fluids.
Medium pumping capacity.
Low shearing strength.

PROPELLER T10 (AXIAL FLOW)

Rotation speed 40–300rpm.
Non-viscous fluids
High pumping capacity.
Low shearing strength.

AXIAL PROPELLER T25 (AXIAL FLOW)

Rotation speed 1–300rpm.
Non-viscous products.
Very high pumping capacity.
Low shearing strength.

PITCH BLADE TURBINE (AXIAL TURBINE)

Rotation speed 30–150rpm.
Low viscous products.
Medium pumping capacity.
Low shearing strength

TWO-WAY FLOW TURBINE (AXIAL FLOW)

Rotation speed 30–150rpm.
Viscous products.
Medium pumping capacity.
Low shearing strength.

ANCHOR (RADIAL FLOW)

Rotation speed1–20rpm.
Viscous products.
Very low pumping flow.
Low shearing strength.

COWLES DISK (RADIAL FLOW)

Rotation speed1.000–1.500rpm.
High viscous products.
Very low pumping capacity.
Very low shearing strength.

RUSTHON DISK (RADIALFLOW)

Rotation speed1.000–1.500rpm.
Non viscous products.
Very low pumping capacity.
High shearing strength.

REFRIGERATION AND PRESSURE COMPENSATION SYSTEMS

There are a large number of industrial processes that take place under pressure and temperature special conditions, such as exothermic reactions in closed containers, where a large amount of heat is released causing an increase in pressure inside the container and such pressure may fluctuate throughout the process.

To provide a solution to these mixing needs, various pressure maintenance and compensation systems must be included in the design of the mixers, as well as different cooling systems that can withstand the high temperatures reached during the process.

The selection of each system is always determined by the operating conditions:

STUFFING BOX

Vertical or side mounting.
Moderate pressure.
High temperature.
Pressurized cooling system.

PUSHERSEAL

Vertical or side-entry mixers.
Moderate pressure.
Moderate temperature.

CARTRIDGE SEAL

Vertical or side mounting.
High pressure.
High temperature.
Pressurized cooling systems.

REFRIGERATION SYSTEM

Double mechanical seal with pressurized cooling system.

AUTONOMOUS REFRIGERATION SYSTEM

Double mechanical seal with recirculation cooling system

COOLING FAIRING

Stuffing box with cooling system and self-vent enclosure.