Force-balanced lifting valve

US5046530A · kind A · utility

Assignee

• H. Kuhnke GmbH KG · DE

Inventors

• Matthias Gossner · Malente, DE
• Joachim Trenkmann · Pinneberg, DE
• Lutz Bungeroth · Oldenburg in Holstein, DE
• Uwe Thomsen · Malente, DE
• Peter Leu · Seojong-myeon, KR

Key dates

• Filing date: Jan 24, 1990
• Grant date: Sep 10, 1991
• Expiry date: Jan 24, 2010

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T137/87217
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

A force-balanced lifting valve for the control of a fluid, comprises a housing having paths for the fluid, an axially movable component in the form of a valve body provided on a shaft mounted so as to be axially movable in the housing, for the opening and closing a valve opening, and a sealing structure for sealing the axially movable component with respect to the housing. The valve body has associated therewith a force-balancing compensation area, which can be acted upon by pressure fluid by way of a subsidiary channel. The sealing structure comprises an elastic, axially effective sealing ring which sealingly engages the valve housing and the axially movable valve component, such that a radial portion of the ring rests axially and sealingly against at least one abutment shoulder on the axially movable valve component.