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Device and method for producing powder-air mixture

A technology of air mixture and air pre-mixture, applied in mixing methods, chemical instruments and methods, gas/steam and solid mixing, etc., can solve problems such as insufficient reliability, unsuitability for industrial use, complex structure, etc.

Inactive Publication Date: 2006-10-04
WEITMANN & KONRAD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Devices of this type are not suitable for industrial use due to their complex structure and insufficient reliability

Method used

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  • Device and method for producing powder-air mixture
  • Device and method for producing powder-air mixture

Examples

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Embodiment Construction

[0019] FIG. 1 shows a device for producing a homogeneous powder-air mixture, indicated generally at 10 , which can be used, for example, in a powder spraying device for powdering printing paper in a printing press. The powder will thus be fed from a supply container (not shown) by means of a dosing device (not shown) in the direction of arrow 12 . The powder falls into a funnel 14 terminating in a suction line 16 . Reference numeral 18 denotes a line nozzle for supplying compressed air. The line nozzles 18 terminate in an annular distribution space 20 in which the compressed air is uniformly introduced into an annular space 22 . The compressed air in the annular space 22 is deflected downwards around the suction line 16 so that an enveloping jet is formed. The suction line 16 terminates in said envelope jet, whereby powder from the funnel 14 and suction line 16 is entrained by said envelope jet.

[0020] The above mixture of powder and air has a flow rate, but is still inho...

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PUM

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Abstract

Disclosed is a device for producing a homogeneous power-air mixture. Said device comprises a pressure section and a suction section which meet in an outlet. The pressure section extends orthogonally into the suction section like an ejector while the suction section is open towards the exterior in the direction of the environment via breakthroughs. Also disclosed is a method for producing a homogeneous powder-air mixture.

Description

technical field [0001] The invention relates to a device for producing a homogeneous powder-air mixture, said device comprising a pressure part and a suction part, wherein said two parts meet at an outlet. The invention also relates to a method for producing a homogeneous powder-air mixture. Background technique [0002] Conventionally, devices for mixing powder and air are known. For example, powder-air mixtures of this type are required in the printing industry for dusting freshly printed printed sheets. German patent publication DE19937557A1 discloses a device of the above-mentioned type in which powder and air are mixed. However, the powder-air mixture produced by such devices as described above is not homogeneous enough. [0003] Other devices have been proposed to produce more homogeneous mixtures. For example, patent publication EP0636405A2 discloses a device for mixing solid jets with gas which attempts to create a homogeneous mixture of solid matter and air usin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01F3/06B41F23/06B01F5/00B05B7/14B01F5/02B05B7/30B01F13/02B01F23/30B01F33/40
CPCB01F3/06B01F5/0428B01F2015/0221B01F5/0413B41F23/06B05B7/1404Y10T137/4891B01F23/30B01F25/31242B01F25/312B01F35/715
Inventor 赖纳·哈斯
Owner WEITMANN & KONRAD
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