Apparatus for opening and closing the outlet aperture of a processing machine

US4562970A · kind A · utility

Inventors

• Walter Eirich · Walldürn, DE
• Paul Eirich · Walldürn, DE
• Hubert Eirich · Walldürn, DE

Key dates

• Filing date: Jan 20, 1984
• Grant date: Jan 7, 1986
• Expiry date: Jan 20, 2004

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S241/30
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

A closure member (11) for opening and closing an outlet orifice (30) in a stationary cover (32) of a drum (1) drivable in rotation in a processing machine, in which the material being treated is conveyed upwards towards the outlet aperture, which is provided generally at the lower region of the drum. Closure member (11) is movably fitted to the cover (32) and is at least partly closable. To ensure that the material being discharged, particularly if it is heterogeneous, fibrous material, is not deposited and does not clog the discharge aperture (30), whereby the opening on the one hand and the closure member (11) on the other hand are not sensitive to contamination and caking, and to ensure that there is a desirably large outlet aperture cross-section despite the limited space available in the cover (32), the invention provides for the outlet aperture (30) to have a crescent shape, which widens in the direction of rotation (7) of the drum (1), while the closure member (11) is constructed as a closure plate, mounted at one side (at 10) on the cover (32) and connected for rotary movement to an adjustable drive (13).