Cleaning and liquid contact with solids – Processes – Using solid work treating agents
Patent
1989-04-19
1991-05-14
Roberts, Edward L.
Cleaning and liquid contact with solids
Processes
Using solid work treating agents
1510405, 1523605, 152565, 511645, 241184, B08B 100, B08B 908
Patent
active
050152998
ABSTRACT:
Process and apparatus are provided for the removal of a deposit from the inner surface of a rotating cylinder having a horizontal or inclined longitudinal axis, which comprises introducing a body having a substantially symmetrical concavo-convex silhouette into the cylinder, the body being slidable in the axial direction in the cylinder either by the rotational movement of the cylinder or by means for axial propulsion of the slidable body within the cylinder, the surface of the body being in frictional engagement with the interior surface of the cylinder, the body being adapted to ride up to a point on the wall of the cylinder due to the frictional engagement, and then when the effect of the weight the body becomes greater than the frictional force of the engagement the body slides back in a generally radial direction toward the bottom of the cylinder while wearing away at least a part of the deposit within the cylinder by scraping action of the surface of the said sliding body against the interior wall of the cylinder. The surface of the body in contact with the interior of the cylinder is provided with scraper projections for intensifying the scraping action of the surface of the body against the interior of the rotating cylinder. The apparatus has a horizontal or inclined longitudinal axis, and is a slidable body the cross-sectional shape of which is that of a substantially symmetrical concavo-convex silhouette having an outer side adapted substantially to mate with and to slide upon the interior surface of the cylinder, an inner side, and two end faces, one or both of the end faces being adapted to have a swivel attached thereto.
REFERENCES:
patent: 710798 (1902-10-01), Nowotny
patent: 864544 (1907-08-01), Kessler et al.
patent: 4736547 (1988-04-01), Bond et al.
Roberts Edward L.
VEB Spezialbaukombinat Magdeburg
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