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US 4,046,325 AGranted
Apparatus for crushing rock, stone and like material
OwnerSteve Tucsok, Elemer Fogarassyinventors
Life of this patent
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Abstract
Apparatus for crushing rock, stone and like material is described. The apparatus includes primary and secondary crushing chambers containing respectively a rotary impactor and a hammer mill. The apparatus can operate either in a wet mode or in a dry mode. In the former case material is processed successively in the two crushing chambers and discharged from the apparatus. In the wet mode, material is first processed in the primary crushing chamber and then discharged from said chamber for processing externally of the apparatus. At least some of the material is then returned to the secondary crushing chamber for further processing and discharge.
Claims17
Apparatus for crushing rock, stone and like material, the apparatus being operable selectively in a mode for crushing dry material or in a mode for crushing wet material, and the apparatus comprising:
- a casing defining:
- (a) a primary crushing chamber having an inlet to receive material to be crushed, and first and second outlets, said first outlet being adapted to receive first screening means for controlling the size of material delivered through said first outlet when the apparatus is operating in said dry mode, and said first outlet being adapted to be closed when the apparatus is operating in said wet mode, said second outlet opening to the exterior of the casing and being adapted to be closed when the apparatus is operating in said dry mode;
- (b) a secondary crushing chamber having an inlet and first and second outlets, said second outlet opening to the exterior of the casing and being adapted to be closed when the apparatus is operating in said dry mode;
- and,
- (c) a passageway disposed above said secondary crushing chamber, said passageway communicating with said first outlet of said primary crushing chamber and with said inlet and first outlet of said secondary crushing chamber, said passageway defining an opening to the exterior of the casing and being adapted to receive, adjacent said opening, second screening means for controlling the size of material delivered outwardly through said opening when the apparatus is operating in said dry mode;
- a rotary impactor mounted for rotation in said primary crushing chamber;
- means for adjusting the position of said impactor in said primary crushing chamber between a first position in said dry mode of operation of the apparatus and a second position in said wet mode of operation of the apparatus;
- and,
- a rotary hammer mill mounted for rotation in said secondary crushing chamber.
6 more elements
Apparatus for crushing rock, stone and like material, the apparatus comprising:
- a casing defining a crushing chamber having an inlet to receive material to be crushed, and at least one outlet;
- a rotary impactor mounted for rotation in said crushing chamber, said impactor comprising a rotor which includes:
- a drive shaft mounted in said crushing chamber for rotation about an axis;
- a solid rotor core secured to said drive shaft in said crushing chamber for rotation with said shaft, said rotor core defining a plurality of slots disposed generally parallel to said drive shaft axis, and a corresponding plurality of planar faces extending between said slots and together defining the general shape of a regular straight sided polygon as viewed on a sectional plane through the rotor core normal to said axis;
- and a plurality of elongate hammers each received in one of said slots in the rotor core and projecting from said core for action on material in said crushing chamber;
- each hammer being of uniform cross-section throughout its length and having an enlarged inner portion which is received in a complementarily shaped enlarged inner portion of the slot so that each hammer is normally positively retained against movement radially outwardly of the rotor core but can be slid longitudinally out of said slot for maintenance of the apparatus;
- and
- means for driving said drive shaft in rotation.
5 more elements
A rotary impactor for use in an apparatus for crushing rock, stone and like material having a crushing chamber, the impactor comprising a rotor which includes:
- a drive shaft adapted to be mounted in said crushing chamber for rotation about an axis;
- a solid rotor core secured to said drive shaft for rotation with said shaft, said rotor core defining a plurality of slots disposed generally parallel to said drive shaft axis, and a corresponding plurality of planar faces extending between said slots and together defining the general shape of a regular straight sided polygon as viewed on a sectional plane through the rotor core normal to said axis;
- and a plurality of elongate hammers each received in one of said slots in the rotor core and projecting from said core for action on material in said crushing chamber in use;
- each hammer being of uniform cross-section throughout its length and having an enlarged inner portion which is received in a complementarily shaped enlarged inner portion of the slot so that each hammer is normally positively retained against movement radially outwardly of the rotor core but can be slid longitudinally out of said slot for maintenance of the apparatus;
- and,
- means for driving said drive shaft in rotation.
3 more elements
Apparatus for crushing rock, stone and like material, the apparatus comprising:
- a casing defining a crushing chamber of generally cylindrical form extending about a longitudinal axis and having an inlet to receive material to be crushed, at least one outlet spaced from said inlet angularly about said axis of the chamber, and an impact surface disposed between said inlet and outlet, said surface extending axially of the crushing chamber and being, throughout its extent, of constant cross-sectional shape with respect to said longitudinal axis of the crushing chamber;
- a rotary impactor mounted for rotation in said crushing chamber about a longitudinal axis parallel to said axis of the crushing chamber, said impactor being of a length generally co-extensive with said impact surface and of constant cross-sectional shape throughout its length so as to define, with said impact surface, an impact zone which extends in a direction parallel to said axis of the crushing chamber and is of uniform cross-sectional shape throughout its length;
- and,
- means for adjustng the position of said impactor in said crushing chamber whilst maintaining said axis of the impactor parallel to said longitudinal axis of the crushing chamber, to vary the proximity of the impactor to said impact surface of the crushing chamber.
1 more element
Dependencies are inferred from the claim text.