Mill for grinding garbage or the like

Details Mill for grinding garbage or the like Mill for grinding garbage or the like

1994-10-03

1997-11-11

Watts, Douglas D.

Solid material comminution or disintegration

Apparatus

Series material flow only through plural comminuting zones

241275, B02C 702

Patent

active

056855001

ABSTRACT:
A mill (10) for grinding garbage or like material is disclosed including grinding rotors (48-50) rotatably fixed to and longitudinally adjustable on a shaft (44) rotatable in a grinding chamber (26). Each of the rotors (48-50) include a multiplicity of arms (64) extending radially from a circular disc (54). The arms (64) have replaceable tips (284) including first and second legs (288, 290) forming an L-shaped body portion. First and second bolts (308) extend through apertures (310) in the arm (64) and are threaded into apertures (312) in the first leg (288). A third bolt (314) extends through a counterbore (320) and an aperture (316) in the second leg (290) and is threaded into aperture (318) of the radially outer end of the arm (64). Material anti-wrap provisions (140) in the form of wing plates (240) oriented to extend generally radially from the shaft (44) are provided between the top plate (28) and the first rotor (28) and also between the rotors (48-50). The wing plates (240) include bars (242, 244) which are slideable relative to each other to variable, fixed lengths parallel to the shaft (44). The provisions (140) between the rotors (48-50) include feet (260, 262) secured to the rotors (48-50) by the bolts (130) which secure the arms (64) to the disc (54). The provisions (140) above the first rotor (48) are secured to the shaft (44) by semicylindrical carriers (264a,b) including C-shaped disks (272) secured to the upper edges (266) thereof, with pins (274) upstanding from the disks (272) acting as a barrier for the bearing (46) of the shaft (44).

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