Patent ID: 8167138
Filing Date: 2012-05-01
Classification: B07B,B29B,B29L,Y02W

Abstract:
1. A dry cleaning apparatus for separating heavy objects from mixture of the heavy objects and light objects having specific gravities smaller than specific gravities of the heavy objects, the dry cleaning apparatus comprising: a casing having a tubular shape having a center axis extending substantially in a vertical direction, the casing having an inner surface thereof extending substantially in parallel to the center axis; an internal cylinder provided in the casing, the internal cylinder having an upper surface and an outer surface thereof, the upper surface of the internal cylinder having a center portion projecting upwardly, the outer surface of the internal cylinder having a portion extending in parallel to the inner surface of the casing, the portion of the outer surface of the internal cylinder facing the inner surface of the casing; a recovery section provided under the internal cylinder for recovering the heavy objects; a loading section for loading the mixture to above the upper surface of the internal cylinder comprising a walled passage way with an inlet end and an outlet end, wherein the outlet end comprises an opening which is located above the center portion of the internal cylinder; a flow inlet provided in the casing in a bottom portion of a space between the inner surface of the casing and the outer surface of the internal cylinder and under the upper surface of the internal cylinder, for introducing air to between the inner surface of the casing and the outer surface of the internal cylinder, the flow inlet surrounding a bottom edge of the casing; and an outlet provided in the casing, the outlet being located above the upper surface of the internal cylinder and above the outlet end of the loading section in the casing, the outlet being capable of discharging the light objects and air from between the inner surface of the casing and the outer surface of the internal cylinder, wherein the inner surface of the casing has a portion facing the portion of the outer surface of the internal cylinder, the dry cleaning apparatus further comprising a projection provided on at least one of the portion of the inner surface of the casing and the portion of the outer surface of the internal cylinder.