FAST MIXER EVL / EVL-G

EVL fast mixer: reinforced support and four standard impellers

The EVL / EVL-G sits between the EVK-G and the KVL. Its aluminium bellhousing can carry a single or a double bearing, and the motor is joined to the shaft by a flexible coupling or a self-aligning 7075 aluminium coupling. With the double bearing the shaft is guided at two points, which is the preferred setup when the impeller runs far from the flange or when high-shear impellers transmit heavier loads. Motors are three-phase or single-phase with 4, 6 or 8 poles, or pneumatic; the shaft is AISI 304-316 or C45 coated with PP, PVC, PVDF or PE-HD.

The EVL data sheet lists four standard impellers: three-blade marine propeller, straight-blade turbine, emulsifier and Cowles impeller, in AISI 304-316 or in PP, PVC or PVDF. That makes the EVL a natural candidate when a mixer has to disperse as well as blend, as in industrial paint mixers or in ink and detergent production with aggressive components. Compared with the KVL it is lighter, with an aluminium bellhousing in place of cast iron.

• Pigment and filler dispersion with a Cowles impeller (300-3000 rpm)
• Detergent and chemical formulation make-up
• Emulsions with an emulsifier impeller (500-2000 rpm)
• Gas-liquid dispersion with a Rushton turbine (300-1400 rpm)
• Resin processing while viscosity stays within the fast mixer range

Frequently asked questions

What is the difference between the EVL and the EVL-G?

In the data sheet drawings the EVL has two bearings in the bellhousing and the EVL-G has one; motors, shafts and impellers are shared. The right choice depends on shaft length, impeller type and installed power, and we confirm it at the design stage.

Can the EVL be used as a paint mixer?

Yes, fitted with the Cowles impeller. In dispersion work the disc tip speed matters more than rpm alone, so diameter and speed are chosen together. The disc moves little volume, so larger tanks may need a second circulation impeller; our technical office can check the tank geometry.

Up to what viscosity does a fast mixer like the EVL work?

Fast mixers are designed for low-viscosity liquids and fluids. As a first-pass guide, stay below roughly 500 cP; above that, or if viscosity rises during the batch, a slow mixer should be considered.

Further reading

• Cowles and other agitator impeller types
• Viscosity: when to move to a slow mixer
• Chemical resistance of PP, PVC and PVDF
• Contact us to configure an EVL for your process

IMPELLERS

FAST MIXERS SET

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