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US 2006/0222553 A1Published application
Rotary piston pump
OwnerFritz-Martin Scholz, Jürgen Oswald +3inventors
InventorsFritz-Martin Scholz, Jürgen Oswald, Herbert Vogt, Daniel Greiner, Wolf-Rüdiger Wagener
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Abstract
A rotary piston pump has at least two rotors (8) with associated drive shafts (26), wherein for each rotor (8) an associated bearing tube (28) is provided, which extends into the associated rotor (8) and through which the associated drive shaft (26) passes. Between the inside (24) of each rotor (8) and the outside of the bearing tube (28) a first gap (64) is provided. In operation, the first gap (64) contains cooling fluid and is part of a cooling fluid circuit.
Claims23
A rotary piston pump, comprising
- at least two rotors with associated drive shafts,
- an associated bearing tube for each rotor, said bearing tube extending into the associated rotor and through which the associated drive shaft (26) passes, and
- a first gap being provided between the inside of each rotor and the outside of the bearing tube,
- in operations, the first gap contains cooling fluid, is part of a cooling fluid circuit and has a cooling fluid inlet and a spatially separate cooling fluid outlet.
1 more element
Dependencies are inferred from the claim text.