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US 5,205,500 AGranted
Mill for grinding garbage
AssigneeLight Work Inc.
InventorRussel L. Eide
Life of this patent
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AssigneeLight Work Inc.
InventorRussel L. Eide
Estimating the term…
A mill (10) according to the preferred teachings for grinding garbage is disclosed including an octagonal shaped grinding chamber (26) formed by side plates (14-17) interconnected to have a square cross section with its corners closed by corner plates (20-23). Planar shelves (32, 34, 36) having centrally located apertures (38) divide the grinding chamber (26). Grinding rotors (48-50) are rotatably fixed to a rotatable shaft (44) and are located complementary to, parallel, and above the shelves (32, 34, 36). The grinding rotors (48-50) include planar arms (64) which radially extend from and are circumferentially spaced on a planar disc (54) fixed to the shaft (44). An impeller rotor (51) is also rotatably fixed to the shaft (44) below the grinding rotors (48-50) and includes angle iron arms (76) which radially extend from and are circumferentially spaced on a planar disc (54) fixed to the shaft (44). The arms (64) of the grinding rotors (48-50) may include pusher bars (96) located on top of the arms (64) and within the radial extent of the discs (54) and/or may include flap blades (88) located on the bottom of the arms (64) intermediate the discs (54) and the centrally located apertures (38) of the shelves (32, 34, 36). The radial spacing between the free ends of the arms (64) and the grinding chamber (26) and between the discs (54) and the centrally located apertures (38) and the axial spacing between the grinding rotors (48-50) and the shelves (32, 34, 36) decrease from the grinding rotor (48) adjacent the inlet opening (40) of the grinding chamber (26) to the grinding rotor (50) adjacent the outlet opening (42) of the grinding chamber (26).
In a mill for grinding material such as garbage including a housing having a multiplicity of plates attached by their side edges at interconnections to define a grinding chamber, the improvement comprising a system for preventing internal wear of the housing plates from the grinding operation comprising, in combination:
In a mill for grinding material such as garbage including a multiplicity of flat plates attached by their side edges interconnections to define a grinding chamber having a perimeter, an inlet opening and an outlet opening, a shaft rotatably mounted in the grinding chamber and concentrically within the perimeter of the grinding chamber, and at least a first grinding rotor rotatably fixed to the shaft, with the rotor including a multiplicity of arms extending radially from and rotatably fixed to the shaft and circumferentially spaced from each other, the improvement comprising means connected to the grinding chamber at the interconnections of the plates for deflecting material from adjacent and circling the grinding rotor towards the grinding rotor when the grindng rotor is rotated to be impinged by the grinding rotor as the material moves axially from the inlet opening to the outlet opening past the grinding rotor and to prevent any tendency of the material to simply circle the grinding rotor inside of the grinding chamber concentric to the grinding rotor.
In a mill for grinding material such as garbage including a grinding chamber having a perimeter, an inlet opening and an outlet opening, a shaft rotatably mounted in the grinding chamber and concentrically within the perimeter of the grinding chamber, and a plurality of grinding rotors rotatably fixed to the shaft, the improvement comprising, in combination:
In a mill for grinding material such as garbage including a grinding chamber having a perimeter, an inlet opening and an outlet opening, a shaft rotatably mounted in the grinding chamber and concentrically within the perimeter of the grinding chamber, at least a first grinding rotor rotatably fixed to the shaft, with the rotor including a multiplicity of arms extending radially from and rotatably fixed to the shaft and circumferentially spaced from each other, and a plurality of shelves secured in the grinding chamber and dividing the grinding chamber into sections, with each of the shelves including a centrally located aperture having a size, with the shaft rotatably mounted in the grinding chamber concentrically within the centrally located apertures of the shelves, with the grinding rotors located complementary to the plurality of shelves, the improvement comprising means connected generally radially to the shelves between the perimeter of the grinding chamber and the apertures of the shelves and located axially intermediate the shelves and the grinding rotors for deflecting material from adjacent and circling the grinding rotor towards the grinding rotor when the grinding rotor is rotated to be impinged by the grinding rotor as the material moves axially from the inlet opening to the outlet opening past the grinding rotor and to prevent any tendency of the material to simply circle the grinding rotor inside of the grinding chamber concentric to the grinding rotor.
In a mill for grinding material such as garbage including a grinding chamber having a perimeter, an inlet opening and an outlet opening, a shaft rotatably mounted in the grinding chamber and concentrically within the perimeter of the grinding chamber, a plurality of rotors rotatably fixed to and axially spaced along the shaft, with each rotor including a multiplicity of arms extending radially from and rotatably fixed to the shaft and circumferentially spaced from each other, and a plurality of shelves dividing the grinding chamber into sections, with the grinding rotors located complementary to and intermediate the shelves, the improvement comprising, in combination:
The mill of claim 21 wherein the deflecting means comprises at least a first elongated bar.
Dependencies are inferred from the claim text.