Rotary feedthrough

US9649893B2 · kind B2 · utility

Assignee

• CLAAS Selbstfahrende Erntemaschinen GmbH · DE

Inventors

• Sebastian Wagemann · Sünninghausen, DE
• Andreas Krauss · Lörrach, DE

Key dates

• Filing date: May 30, 2014
• Grant date: May 16, 2017
• Expiry date: Jul 16, 2035

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F16L27/087
• WIPO field: Transport
• WIPO sector: Mechanical engineering

Abstract

A rotary feedthrough for a compressed air supply system is provided between a stator and a rotor rotating relative to this stator. A compressed air channel disposed in the stator is connected to a compressed air line and leads into an annular chamber formed in the rotor, from which at least one working channel leading to a consumer proceeds. The stator is connected in the region of the rotary feedthrough to a control line. A moment of friction occurring in the region of the rotary feedthrough resulting in premature wear is reduced by providing a switchable non-return valve in the annular chamber. Blocking elements which extend within the annular chamber concentrically to the rotational axis of the rotor are moveable into an open position by an actuating element, which is displaced from the stator in the direction of the blocking elements.