Scraper

Heat exchange – With scraper removing product from temperature modifying...

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110165R, B22B 1914, F28G 310

Patent

active

049863479

ABSTRACT:
An apparatus for the removal of residues from the inner wall of a tube carrying hot gases and/or vapors includes a passage extending into a first end of the tube in an axial direction; an axially extending shaft supported within the passage in an axially displaceable manner so that one end of the shaft is within the tube; a discharge opening in the tube through which the residues may be removed; a helically wound metal scraper connected to the one end of the shaft; and a device for driving the shaft such that the scraper is rotated in a manner of a corkscrew into the tube.

REFERENCES:
patent: 1690434 (1928-11-01), Rockelman
patent: 3410335 (1968-11-01), Malmstrom et al.
patent: 4315541 (1982-02-01), Murata et al.
FIG. 4 on p. 382 of Chem.-Ing.-Tech. 54, Nr. 4 (1982).
Patent Cooperation Treaty--International-Type Search Report.

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