Which agitator fits best to my stirring task?

The propeller agitator, also known as mixing propeller, is particularly suitable for stirring processes in aqueous and low-viscosity media. Areas of application of a propeller include homogenizing, dispersing and suspending liquid media. Propeller agitators require very little maintenance and are also suitable for continuous operation. Propeller stirrers are usually installed eccentrically on top of the tank and are also suitable for circulating media in large tanks and storage tanks, despite the small power input. In large storage tanks, propeller agitators are often installed laterally in the cylinder of the vessel to keep the medium in motion. The speed of a propeller agitator depends on the design. A high-speed mixer (without gear) reaches speeds of up to 1500 rpm. Propeller stirrers with geared motors are suitable for gentler stirring applications and their speed can be significantly reduced accordingly.

Advantages of the propeller agitator at a glance:

• Efficient stirring due to high circulation
• Low power input
• Low maintenance and suitable for continuous operation
• Uncomplicated & easy cleaning
• Very short delivery times & attractive pricing (Behälter KG specific)

Two propeller stirrers in different dimensions

Behälter KG offers brand new propeller agitators designed as IBC-container agitators, tripod agitators, as well as ready-to-use mixing tanks such as the SDE-Flexmix (550-1150 liters), AIT-Containermix (1000 liters) and FIT-Storemix (800-20,000 liters).

We also offer a wide selection of second-hand stainless steel tanks with propeller agitator, immediately available from stock.

The blade stirrer (also called cross blade agitator or paddle stirrer) is a multi-stage agitator system, since at least two blade elements are attached to the agitator shaft. The large blade diameter creates a high peripheral speed. A blade agitator is therefore always equipped with a gear motor that regulates the agitator speed to a two-digit or low three-digit value. The blade stirrer is installed eccentrically on top of the tank and therefore does not require any additional flow breakers. One advantage of the blade stirrer is the very wide range of applications, as it reliably mixes aqueous media but also gets along well with much more viscous media such as motor oil, syrup or low-viscosity paints. Blade stirrers are also well suited for the gentle circulation of large quantities.

Advantages of the blade stirrers at a glance:

• Multi-stage stirring system
• Circulation of large quantities
• Versatile fields of application
• Blades can often be moved flexibly up and down on the shaft
• Constant energy input

Blade stirrer with two blade elements mounted on the agitator shaft

Behälter KG offers brand-new blade stirrers designed as IBC-container agitators, tripod agitators, as well as ready-to-use mixing tanks such as the SDE-Flexmix (550-1150 liters), AIT-Containermix (1000 liters) and FIT-Storemix (800-20,000 liters). We also offer a wide selection of used stainless steel tanks with blade stirrer, immediately available from stock.

The homogenization of viscous media such as honey or glue places high demands on mixing technology. However, anchor agitators, also known as frame stirrers, are the optimal agitator options for such highly viscous media. Anchor agitators are characterized by the intensive renewal / mixing of the wall boundary layer, which results in good heat transfer. The main flow direction is tangential with vortex areas on the anchor bars. Small areas with relatively small flow speeds are formed between the anchor bars, which is why Behälter KG anchor stirrers are equipped with solid stainless-steel built-in parts in order to achieve maximum mixing. Centrally positioned on the top bottom of the tank and optionally equipped with Teflon wipers, the anchor mixer is the best choice for gentle stirring of highly viscous media.

The advantages at a glance:

• Gentle stirring process for highly viscous media
• Excellent for efficient heat exchange due to thorough mixing right up to the vessel wall
• Ideal for homogenizing viscous substances
• No flow breakers are required, despite central installation
• Optionally available with Teflon wipers

Anchor agitator of the Behälter KG SDE-Flexmix product family

Behälter KG has designed a brand-new anchor agitator mixing tank, available in 550 and 1150 liters. It is called SDE-Flexmix. We also offer larger 800 – 20000 liter mixing tanks with anchor stirrer, that can be mounted on our FIT-Storemix (requires a custom-made design).

We also have a very large selection of used stainless steel tanks with anchor agitators always immediately available from stock.

Cup stirrers, also known as visco-stirrers, are one of the most innovative and versatile agitator variants for aqueous to highly viscous media. The conical cup-shaped impeller is particularly well-proven for uniform mixing (homogenizing), for admixing additives and for stirring out air bubbles (degassing). Compared to other mixers, the cup stirrer also impresses with a shorter stirring process. In contrast to other stirrers, the cup stirrer enables optimal and gentle mixing by generating sufficient flow even at relatively low speeds. This enables a highly efficient and energy-saving stirring process despite a very low peripheral speed. This results in various process-related advantages such as the very low formation of drums, hardly any air entry and foam formation. The shear transferred into the medium is also very low with the cup agitator. For IBC containers and other containers with a small top opening, folding cup stirrers are a specifically well-suited option. A foldable cup stirrer opens automatically due to the centrifugal force during the mixing process. During the installation and the removal of the stirrer, the cup elements are folded and hence require little space.

The advantages of the cup stirrer at a glance:

• Gentle stirring process at low speed
• Cost-effective due to shortened stirring process & lower engine power requirement
• Hardly any air intake & foam formation
• No flow breakers are required, despite central installation

• Uncomplicated & easy cleaning- Optionally designed as folding cup stirrer
• "All-round" agitator for almost all applications (watery to highly viscous)

Cup stirrer with 3 conical cups as impeller element

Behälter KG offers brand new cup stirrers as IBC-container agitators, tripod agitators, as well as installed in our mixing tanks SDE-Flexmix (550-1150 liters), AIT-Containermix (1000 liters) and FIT-Storemix (800-20,000 liters).

We also have selection of high quality second-hand stainless-steel tanks with cup stirrer immediately available from stock.

The oblique blade stirrer (also called cross blade or inclined blade stirrer) features a multi-bladed impeller, consisting of usually four (sometimes up to eight) stirrer blades, arranged at a 45 ° angle. This results in both axial and radial flow. The oblique blade stirrer convinces by a higher energy input and a more shear force than, for example, a propeller stirrer. This results in more turbulent mixing and a higher flow rate.

The advantages of the oblique blade stirrer at a glance:

• High performance input
• Can well be equipped with an additional impeller
• Uncomplicated & easy cleaning

Oblique blade stirrer installed in a pharmaceutical vessel

You are interested in the purchase of a mixing vessel with an oblique blade stirrer? Behälter KG constantly offers a selection of used oblique blade stirring vessels, immediately available from stock.

The dissolver, also known as toothed disk stirrer, is mainly used in the paint and varnish industry for dispersion, emulsification, and wet grinding at high speed. The dissolver's toothed stirring disc generates high shear forces during the mixing process, which can break up the finest particles. Due to the special shape, the dissolver disc makes a high energy input. However, since this stirrer has a relatively low flow rate, other stirring tasks are only insufficiently solved. That is why Behälter KG is happy to offer you dissolver agitators in combination with other agitators, for example together with an anchor agitator and / or cup stirrer.

The advantages of the dissolver at a glance:

• High shear forces for optimal dispersion
• Motor power up to 55 KW possible
• Cost-effective as no geared motor is required  

Dissolver in a brand-new mixing vessel of the SDE-Flexmix series

Behälter KG offers brand new dissolvers in form of a tripod agitators, as well as installed in our mixing tanks SDE-Flexmix (550-1150 liters), AIT-Containermix (1000 liters) or FIT-Storemix (800-20,000 liters). We also offer an extensive range of premium used stainless steel tanks with dissolver agitator, immediately available from stock.

The rotor-stator technology creates a strong axial beam that mixes the entire content of the vessel quickly and without any air intake. There is also no vortex formation and no sedimentation inside the vessel. The jet stream agitator can be installed centrally on the top bottom as well as laterally in the cylinder of the mixing tank.

The advantages of the jet stream mixer at a glance:

• No sedimentation
• No air entry
• Shortened stirring time

Example of a "Rotor-Stator" jet-stream mixer

Behälter KG offers brand new jet stream mixers as IBC-container agitators, tripod agitators, or installed in our mixing tanks SDE-Flexmix (550-1150 liters) and AIT-Containermix (1000 liters).

We also offer a range of instantly available used stainless steel mixing tanks with jet stream mixer, available from stock.

Magnetic stirrers are ideal for sterile and hygienic applications, especially in pharmaceutical applications. The torque transmission of a magnetic stirrer takes place through a magnetic field. This means that there is no need to provide a shaft feedthrough in the mixing tank, which offers great hygienic advantages. The magnetic stirrer is installed in the bottom of the vessel, so that the homogenization of the product is guaranteed even with at the smallest filling quantities. In addition, most magnetic agitators are optimally suitable for usage in vacuum or pressure vessels.

The advantages of a magnetic mixer at a glance:

• Designed for sterile applications
• Mixes reliably even small volumes
• Ideally suited for vacuum / pressure vessels
• Space-saving construction (e.g. for mobile vessels)

Magnetic mixer installed in a pharmaceutical vessel

Are you interested in the purchase of a vessel with a magnetic stirrer? Behälter KG constantly offers a selection of used magnetic agitator vessels, immediately available from stock.