Valve, in particular pilot-operated proportional directional poppet valve

US9777844B2 · kind B2 · utility

Assignee

• HYDAC FLUIDTECHNIK GMBH · DE

Inventors

• Peter Bruck · Althornbach, DE
• Markus Bill · Eppelborn, DE

Key dates

• Filing date: Jul 18, 2013
• Grant date: Oct 3, 2017
• Expiry date: Oct 6, 2033

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T137/7771
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

A valve, in particular a pilot-operated proportional directional poppet valve, has a valve housing (7) with a fluid inlet (21) and a fluid outlet (23). The fluid stream between the fluid inlet (21) and the fluid outlet (23) is adjustable by a main piston (27). A pilot valve chamber (37) provided on a rear face (29) of the main piston (27) has a pilot valve closing member (33) movable by an actuating device (69). By closing member (33) the fluid stream between the pilot valve chamber (37) and the fluid outlet (23) can be adjusted. An inlet aperture (3) is arranged between the fluid inlet (21) and the pilot valve chamber (37). A maximum volumetric flow controller (5) is in the main piston (27) in an outflow between the pilot valve chamber (37) and the fluid outlet (23).