Blade ring for air-swept roller mills

US6079646A · kind A · utility

Assignee

• LOESCHE GMBH · DE

Inventors

• Michael Keyssner · Goldkronach, DE
• Thomas Letsch · Düsseldorf, DE

Key dates

• Filing date: Jan 25, 1999
• Grant date: Jun 27, 2000
• Expiry date: Jan 25, 2019

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B02C15/001
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

To reduce the manufacturing costs of air-swept roller mills and comparable mills, according to the invention a segmented polygonal blade ring is provided, which is manufactured from a plurality of polygon segments, which have planar surfaces and are preferably cut to size from metal sheets. To individual polygon segments can in each case be fixed with a predeterminable inclination one or more guide blades. Preferably an outer polygon segment an an inner polygon segment with at least one guide blade form a polygon segment. Polygon segments can be linked to polygon runs and the latter to polygon blade rings with different diameters.