Weighing apparatus for pneumatic conveying installations

US3989308A · kind A · utility

Assignee

• Azo-Maschinenefabrik Adolf Zimmermann GmbH

Inventors

• Adolf Zimmermann · Osterburken, DE
• Otmar Link · Bergneustadt, DE
• Josef Theierl

Key dates

• Filing date: Nov 26, 1974
• Grant date: Nov 2, 1976
• Expiry date: Nov 26, 1994

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B65G53/24
• WIPO field: Handling
• WIPO sector: Mechanical engineering

Abstract

In apparatus for weighing powdered material conveyed by suction from two or more supply containers to a single weighing and separating container via individual conduits with respective shutoff valves, the said valves are directly adjacent one another near the weighing container and in a common block to which are connected the said individual conduits and a common outlet conduit leading to the weighing container. For controlling the dosaging, an air supply valve and a secondary air valve may be provided on the valve block upstream of the shutoff valves. The respective valves may be driven by compressed-air cylinders controlled by switches associated with the weighing balance.