Mechanical seal arrangement with minimal leakage

US11028926B2 · kind B2 · utility

Assignee

• EagleBurgmann Germany GmbH & Co. KG · DE

Inventors

• Joachim Otschik · Aschaffenburg, DE
• Andreas Schrufer · Wolfratshausen, DE
• Jorg Thelke · Wolfratshausen, DE
• Rudolf Schicktanz · Wolfratshausen, DE
• Christine Labatut-Stolle · Wolfratshausen, DE
• Aleksandar Simic · Penzberg, DE
• Joachim Reitberger · Wolfratshausen, DE

Key dates

• Filing date: Sep 26, 2017
• Grant date: Jun 8, 2021
• Expiry date: Jan 14, 2038

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F16J15/3408
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

The invention relates to a mechanical seal assembly comprising a mechanical seal with a rotating slide ring and a stationary slide ring, wherein one of the two slide rings has a first slide surface, wherein the other of the two slide rings has a second slide surface with a circumferentially closed sealing blade which protrudes from a bottom region of the second slide surface in the direction of the first slide surface by a height (H), wherein the sealing blade has a width (B) in a range of between 10 and 500 μm, wherein at least one pre-tensioning element braces the slide rings against each other, wherein the second slide surface and the sealing blade on the second slide surface have a diamond coating.