Patent ID: 7594941
Filing Date: 2009-09-29
Classification: B01D,B04C

Abstract:
1. A rotary cyclone apparatus for separating particles from a gas stream, comprising: a) a cylindrical-conical type cyclone body having a rigid lower conically shaped section and a rigid upper cylindrically shaped section with a tangential inlet, said cylindrical-conical type cyclone body including a central axis; b) a dust hopper attached to a bottom of the rigid lower conically shaped section; c) a gas outlet attached to a top of the rigid upper cylindrically shaped section; d) a filtering vortex finder located in said upper cylindrically shaped section, said filtering vortex finder including an outer cylindrical casing having a casing wall and having first and second opposed ends, a generally cylindrical wave-shaped filter having first and second opposed ends and having a diameter smaller than a diameter of said outer cylindrical casing, said cylindrical wave-shaped filter being located inside, and concentric with, said outer cylindrical casing such that an annular chamber is located between said cylindrical wave-shaped filter and an inner surface of said casing wall, and a perforated annular gas distributor extending between said casing wall and a circumference of said first opposed end of said cylindrical wave-shaped filter at one end of said annular chamber, and a second end of said annular chamber in flow communication with said gas outlet, and a pipe having a first end in flow communication with said annular chamber through said perforated annular gas distributor; and e) an elongated shaft extending into said cylindrical wave-shaped filter through said second opposed and being aligned longitudinally along a central axis of the cylindrical wave-shaped filter, which is coincident with said central axis of the cylindrical-conical body, and a rotary brush being connected coaxially to said elongated shaft, said second opposed end of said cylindrical wave-shaped filter, including a sealing member for sealing said second opposed end of said cylindrical wave-shaped filter between said elongated shaft and a circumference of said second opposed end, said rotary brush having a radial dimension such that peripheral radial edges of said rotary brush sweeps an inner surface of the wave-shaped filter when the elongated shaft is rotated, and including rotation means for rotating said elongated shaft.