Mixers

Anchor stirrers are primarily designed to mix highly viscous products and non-Newtonian fluids, i.e. fluids with a viscosity that varies depending on the shear stress that is applied.

These stirrers can be mounted in tanks with a round or conical base.

Blade stirrers are used in suspension, dispersion and homogenisation processes of low and medium viscosity substances. These stirrers can be installed in tanks with a round or conical base and work at low to moderate mixing speed, with a peripheral speed of between 2 and 7 m/s.

The blades are axial flow stirrers, ideal for mixing solid-liquid and liquid solutions and suspensions, as they prevent the deposit of solid particles on the bottom of the tank.

Depending on the application, it is also possible to fit the tank with deflectors.

The ME.DIA range of mixers can be operated by a geared or direct motor.
The rotation of the propeller creates a flow that pushes the product toward the bottom of the tank which then rises back up to the surface of the liquid along the wall of the tank opposite the stirrer. This effect is favoured in a tank with a rounded bottom.
In order to produce a simultaneous circular flow, the stirrer is installed in an off-centre position, thus ensuring the complete homogenisation of the product.

The Cowles model single spindle dissolvers are designed for mixing a wide range of products with different viscosities, from liquid to liquid or dry to liquid products.
The mixers are direct transmission with a power ranging from 0.5 to 125 horsepower (W). Fixed or variable speed mixers will vary from 1 to 300 horsepower (W). All are available with variable speed drives, with a mechanical or electronic system, inverter and frequency variator.

The high speed of turbines, combined with the high tolerance between the rotor and the stator, develops a powerful suction that conveys the product up to the centre of the cylinder head.
The product is aspirated into the upper part of the cylinder head and the impeller pushes it radially. With a top rotor speed of 20 m/s, the passage through the stator openings produces a strong mechanical cutting effect causing a mincing of the particles. The ejected flow also generates a hydraulic cutting effect, rising at high speed from the stator.

Designed to process viscous and dense products, the mixer with the wall-mounted scraper is fitted with counter blades to improve the mixing of the viscous product along with a liner to heat the contents.
The products are loaded through the holes in the upper base, from a manhole or through a valve at the bottom of the tank.
The mixing action of the anchor stirrer with scrapers allows homogenisation of the product and prevents overheating of the wall thanks to the liner. If the device is equipped with a mixer capable of generating a high shear force it is possible to produce emulsions, dispersions or high quality solutions with no lumps.
The speed of the anchor and the temperature can be adjusted from the electrical switchboard.

The washing system can be manual or a CIP and SIP system. In order to achieve this, two rotating washing balls are installed in the system. The system will then need to be connected to a central CIP for automatic washing operation.

The equipment can be provided with a weighing system with load cells and terminals for taking weight measurements, complete with programming options. In this way, in addition to checking the product contained inside the reactor at any time, it is possible to check any addition and/or removal of the product.