New design of variable speed gear pump system EPAI

At the EuroBlech 2004 in Hanover, Voith Turbo presented for the first time its new variable speed hybrid gear pump system 'EPAI', the design having an internal gear pump as the main feature

At the EuroBlech 2004 in Hanover, Voith Turbo presented for the first time its new variable speed hybrid gear pump system 'EPAI'.

The special feature of this system is that the internal gear pump is integrated rotor-centrically in the motor, in a common housing.

On account of that, the construction is very compact resulting in up to a 50% reduction of the volume of conventional systems.

This new pump design has further novel features, as no sealing elements are required on rotating parts.

Another considerable advantage of this system is its low noise, thanks to the embedded construction of the Voith internal gear pump, already known as a quiet motor from many previous installations.

A noise reduction by about 10 dB compared to standard combinations has already been measured at the Voith test bays.

The new hybrid motor pump combination is therefore especially suitable for applications where high requirements to density, as in the food-processing industry, and size, as in shipbuilding, or in applications where stringent noise level conditions need to be met.

The EPAI system can be designed with the Voith medium-pressure internal gear pump, designed according to the superlip principle (type IPM), as well as with the high-pressure internal gear pump (type IPV), where pressures of up to 345 bar can be realized.

The integration of a second pump stage is also possible without any problems, according to Voith Turbo.

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