Vertical Agitator

Vertical agitators are the most versatile and commonly used mixing solution. Vertical agitators require shaft sealing only in cases when the vessel is pressurized or its gas space needs to be isolated for special reasons. Vertical agitators offer the simplest solution for introducing mechanical force for fluid agitation.

Drive unit

The drive unit transmits power from the electric motor to the gearbox and finally to the agitator shaft, transforming the motor speed to the nominal agitation speed. The drive unit also works as the housing (so called agitator lantern) for various sealing systems and bearings.

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Impellers

In addition to our proprietary agitators, UTG offers a wide range of generic/standard impellers, as well as customer requested impeller designs.

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Sealing

Sealing is required for isolating the reactor gas space from the ambient atmosphere, for example due to pressure differences or hazardous gas.

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Bottom support

In order to strengthen the system, additional bottom supports are occasionally applied in the agitator design. Bottom supports giving the shaft a second fulcrum are normally applied to structures with extra tall shafts or high bending moment. Generally, bottom bearings are avoided as they always increase the number of maintainable parts.

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Mounting to tank

Most of the drives are mounted directly to the tank flange, but often different mounting options are needed

Materials

Materials are selected based on the corrosion and abrasion conditions inside the tank. Mechanical properties in relation to the required agitation forces also play a role when selecting materials. Ideally, solid materials are applied, but sometimes linings have to be used due to the availability, cost or a poor combination of wear and mechanical strength of the base material.

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