Double seat valve with seat cleaning

US8336572B2 · kind B2 · utility

Assignee

• GEA Tuchenhagen GmbH · DE

Inventors

• Jens Burmester · Grambek, DE
• Matthias Suedel · Ratekau, DE

Key dates

• Filing date: Jun 6, 2008
• Grant date: Dec 25, 2012
• Expiry date: Oct 27, 2029

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T137/88038
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

The invention relates to a double seat valve which is capable of cleaning the seat. The double seat valve includes a closing element (4), when in its closed position rests with a stop surface (4e), arranged on a boundary surface thereof radially adjacent on an inner side to a seal (7), on a second seating surface (2b) and directly adjacent to a first seating surface (2a, 2g) with a central recess (4d) provided in a front face of the closing element (4) facing a leakage cavity (5). The closing element (4) further includes a deflector surface (4b) opening in a front face (4c), wherein the deflector surface (4b) and the slop surface (4e) form a circumferential edge (U2) directly adjacent to a first end section (2g) of the first seating surface (2a) in the closed position of the closing element (4).