Apparatus for classifying dust materials
AssigneeWibau Maschinenfabrik Hartmann AG
InventorsGoetz Haidlen, Edmund Groepl
Life of this patent
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Abstract
An apparatus for separating fine dust particles from coarse dust particles, such as are present in hot filling powders for pit furnaces for the production of electrodes by aluminium fusion electrolysis, comprises a first separator with an adjustable separation gap, arranged inside a bin on an intermediate bottom, which is preferably slanted, dividing the bin into an upper chamber and a lower chamber. The air flow is sustained by a fan connected with its discharge side to the lower chamber. The suction side of the fan is connected to the upper chamber through a further separator for the fine particles and through respective pipes. Preferably the suction return path through the pipes and the further separator leads through a further collector.
Claims11
An apparatus for separating the particles of powdery materials from one another in a conveying system operating under reduced pressure, comprising first collector housing means (3), partitioning wall means (33) operatively secured in said first collector housing means (1) for forming upper and lower chambers (31, 32) in said first collector housing means, classifier means (2) operatively supported on and extending through said partitioning wall means (33), suction pipe means (1) extending axially into said classifier means (2) for maintaining said reduced pressure, suction fan means (11) operatively connected with its pressure port to said first collector housing means (1) for producing a separator air stream, ring means (19) adjustably arranged in said classifier means (2) for forming a ring gap (21) of adjustable cross-sectional area, second classifier means (7), connecting pipe means (9, 9', 9") operatively connecting said upper chamber (31) through said second classifier means (7) to the suction port of said suction fan means (11), further suction means (16) operatively connected to said connecting pipe means, and second collector housing means (5) operatively connected to said connecting pipe means (9, 9') between the first and second classifier means.
Dependencies are inferred from the claim text.