Device for gravimetric metering and pneumatic suction conveying of fluidizable bulk materials

US6293153A · kind A · utility

Assignee

• Wacker Chemie AG · DE

Inventors

• Burkhard Grune · Burghausen, DE
• Helmut Huber · Niederalteich, DE
• Dieter Duschl · Offenbach, DE

Key dates

• Filing date: Oct 26, 1999
• Grant date: Sep 25, 2001
• Expiry date: Oct 26, 2019

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B65G53/66
• WIPO field: Handling
• WIPO sector: Mechanical engineering

Abstract

A device for the metering of fluidizable bulk materials, having a storage tank and a mass-flow-measuring device for the material and a fluidizing device, which is connected to the storage tank via an aperture of adjustable size, and a control valve for controlling the supply of compressed air to the fluidizing device, wherein a pressure gauge is provided downstream of the fluidizing device, in the direction of flow, and the pressure gauge and control valve are connected via a first control circuit, and the supply of compressed air to the fluidizing device is metered by this control circuit in such a manner that a constant, in each case preselectable subatmospheric pressure prevails in the fluidizing device, and the mass-flow-measuring device and the aperture of adjustable size are connected via a second control circuit, and the size of the adjustable aperture is set by this control circuit in such a manner that a defined quantity of bulk material enters the fluidizing device.