Pressure filter

Details Pressure filter Pressure filter

1984-10-10

1986-06-03

Spitzer, Robert

Liquid purification or separation

Flow, fluid pressure or material level, responsive

Filter cleaning

210298, 210408, 210413, 210531, B01D 2320

Patent

active

045928355

ABSTRACT:
There is disclosed a nutsch filter having blades fitted to a central, vertically positioned hollow shaft by a hollow arm, the blades having a plough-like cutting edge and a spatula-like bottom surface acting in the opposite movement direction. A discharge pipe, arranged concentrically to the hollow shaft, is axially displaceable. The discharge pipe is moved upwards against a cover for sealing the filter casing. The filtration or resuspension or drying of the filter cake takes place in this position. In order to discharge the compressed filter cake, the upper edge of the discharge pipe is set by the blades to the level of the paring or skimming process. Paring of the filter cake and conveying of the pared mass into the central discharge pipe opening takes place in a single operation by means of the blades. On drying, hot air or a hot fluid is passed through the cavities of the arm as well as the parts connected thereto.

REFERENCES:
patent: 624633 (1899-05-01), Edwardes
patent: 903697 (1908-11-01), Frasch
patent: 1574557 (1926-02-01), Coe
patent: 1865061 (1932-06-01), Grob
patent: 3036716 (1962-05-01), Schreiber
patent: 3647071 (1972-03-01), Lamort
patent: 4081381 (1978-03-01), Rosenmund et al.
patent: 4297210 (1981-10-01), Delfosse
patent: 4376705 (1983-03-01), Komura et al.
patent: 4399042 (1983-08-01), Stannard et al.

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