Voith IPV Series - Superlip Principle; Fig. 5.1.2: Components of the Internal Gear Pump with Superlip Principle

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Voith Turbo H + L Hydraulic GmbH & Co. KG 25000057510-TED-ENX-04
5.1.2Superlipprinciple
Fig. 5.1.2: Components of internal gear pump with superlip principle
Rotation of the gears through 180° in the pump draws in the pressure uid (as a rule
hydraulic oil) into the cavity between the pinion and internal gear by opening the gear
chambers. The gear chambers are sealed in a radial direction by gear meshing and
by the sealing lips and the pinion head. This design minimizes volume losses and
increases efciency.
When the gears rotate a further 180° the pinion teeth enter the gaps between the inter-
nal gear teeth and displace the pressure uid.
1 Pinion shaft
2 Internal gear
3 Sealing lips
4 Plain bearing
5 Hydrostatic
relieved bearing
6 Housing
1 4 4 26 5 3 56
n
H
n
R
Internal gear pumps
Superlip principle
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