Control valve device for the control of a consumer

US7540231B2 · kind B2 · utility

Assignee

• Linde Material Handling GmbH · DE

Inventors

• Richard Hofmann · Alzenau, DE
• Edmund Kraft · Karlstadt, DE

Key dates

• Filing date: Dec 11, 2006
• Grant date: Jun 2, 2009
• Expiry date: Jun 30, 2027

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F15B2211/7053
• WIPO field: Handling
• WIPO sector: Mechanical engineering

Abstract

A control valve device (1) for the control of a dual-action consumer (2) has a control valve (3) that controls the connection of a pressure fluid line (6a) that forms the admission side of the consumer (2) with a pump and an additional pressure fluid line (6b) that forms the return side of the consumer (2) with a reservoir. A regeneration function allows the return side of the consumer (2) to be connected with the admission side of the consumer (2). The regeneration function has a short circuit device (10) located between the consumer (2) and the control valve (3). For the regeneration function, the connection of the additional pressure fluid line (6b) that forms the return side of the consumer (2) with the reservoir can be blocked by a shutoff valve device (20) located between the consumer (2) and the control valve (3).