Patent Number: 6,293,153

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

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.

Inventors: Grune; Burkhard (Burghausen, DE), Huber; Helmut (Emmerting, DE), Duschl; Dieter (Burgkirchen, DE)

Assignee: Wacker Chemie GmbH

International Classification: B65G 53/66 (20060101); B65G 53/34 (20060101); G01L 007/00 ()

Expiration Date: 09/25/2018