Solid material comminution or disintegration – Apparatus – Series material flow only through plural comminuting zones
Patent
1993-03-03
1995-06-20
Watts, Douglas D.
Solid material comminution or disintegration
Apparatus
Series material flow only through plural comminuting zones
241 29, 2412601, 241DIG38, B02C 1310, B02C 1922
Patent
active
054255074
ABSTRACT:
A method and apparatus for reducing material, such as trash, refuse, garbage and the like, to a specified size of particles. The apparatus is directed to a single comminuting chamber means as well as to a combination of first and second comminuting chamber means. The first comminuting chamber means includes in the lower portion of said chamber means a flow passage means of varying volume through which the particles pass thereby preventing wedging or packing of the particles in the first comminuting chamber means during the comminution of the material therein. The second comminuting chamber means includes a screenless hammer mill means having holding bars or means for holding pieces of material that exceed a predetermined length until said pieces are reduced to a length equal to or less than said predetermined length. The first comminuting chamber means may also include at least one or more fine grinding means for further reducing the size of pieces of material by increasing the time for material to pass through the first comminuting chamber means. The first comminuting means preferably includes a drum and the second comminuting chamber means includes hammer support structure, said drum and said hammer support structure being rotatably mounted in the respective chambers. Comminuting means may be attached to the rotating members mounted in each chamber means. Rotation of the drum in the first comminuting chamber means creates a positive air pressure which assists in moving the particles through the first chamber means and into the second chamber means. This positive air pressure may be augmented by connecting the discharge side of the second chamber means in fluid communication with a source of reduced pressure.
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Burton Duane
Watts Douglas D.
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