Solid waste comminutor

Apparatus for comminuting solid waste material comprising:

• a casing defining therein a comminution chamber with inlet and outlet ports thereto disposed on opposing sides of said comminution chamber and adapted for connection in a solid waste disposal line;
• a comminutor assembly including cooperating substantially parallel first and second shredding stacks located in said comminution chamber and respectively having a plurality of first concentric laminar cutting elements mounted on a first shaft in interspaced relationship with a plurality of second laminar cutting elements mounted concentrically on a second shaft, each cutting element having teeth shaped for cutting in both of two opposite directions of rotation, and wherein the cutting elements of each stack are positioned between and separated in an axial direction by laminar spacers which are coplanar with the elements of the other stack whereby a cutting element from one shredder and a spacer from the other shredder form a pair of interactive shredding members, wherein the minimum distance of separation between different ones of the teeth of a cutting element and the spacer associated therewith in a pair of shredding members differs as between at least some of said teeth of said cutting element, and wherein said first and second stacks are compressed between first and second distally opposed bearing plates which receive said first and second shafts, said bearing plates being secured to said casing in compression against said stacks;
• means for securing said first and second bearing plates to said casing;
• gearing means disposed on adjacent ends of said first and second shafts for coupling the rotations thereof in common, to thereby effect counter-rotation of said shafts;
• and
• drive means comprised of a power source and a system of meshed gears arranged as a speed reducing system and adapted for connection to an end of said first shaft for driving said first shaft in rotation.

Apparatus for comminuting solid waste material comprising:

• a casing defining therein a comminution chamber with inlet and outlet ports thereto disposed on opposing sides of said comminution chamber and adapted for connection in a solid waste disposal line;
• a comminutor assembly including cooperating substantially parallel first and second shredding stacks located in said comminution chamber and respectively having a plurality of first concentric laminar cutting elements mounted on a first shaft in interspaced relationship with a plurality of second laminar cutting elements mounted concentrically on a second shaft, each cutting element having teeth shaped for cutting in both of two opposite directions of rotation, and wherein the cutting elements of each stack are positioned between and separated in an axial direction by laminar spacers which are coplanar with the elements of the other stack whereby a cutting element from one shredder and a spacer from the other shredder form a pair of interactive shredding members, and wherein said first and second stacks are compressed between first and second distally opposed bearing plates which receive said first and second shafts, said bearing plates being secured to said casing in compression against said stacks;
• means for securing said first and second bearing plates to said casing;
• gearing means disposed on adjacent ends of said first and second shafts for coupling the rotations thereof in common, to thereby effect counter-rotation of said shafts;
• and
• drive means comprised of a power source, a system of meshed gears arranged as a speed reducing system and adapted for connection to an end of said first shaft for driving said first shaft in rotation, and reversing means for reversing the direction of rotation of said first shaft.

Apparatus for comminuting solid waste material comprising:

• a casing defining therein a comminution chamber with inlet and outlet ports thereto disposed on opposing sides of said comminution chamber and adapted for connection in a solid waste disposal line;
• a comminutor assembly including cooperating substantially parallel first and second shredding stacks located in said comminution chamber and respectively having a plurality of first concentric laminar cutting elements mounted on a first shaft in interspaced relationship with a plurality of second laminar cutting elements mounted concentrically on a second shaft, each cutting element having teeth shaped for cutting in both of two opposite directions of rotation, and wherein the cutting elements of each stack are positioned between and separated in an axial direction by laminar spacers which are coplanar with the elements of the other stack whereby a cutting element from one shredder and a spacer from the other shredder form a pair of interactive shredding members, wherein the teeth of said cutting elements differ in their maximum radial dimensions, whereby the minimum clearance between the teeth of a cutting element and the opposing spacer within a pair of interactive shredding members differs as between different ones of said teeth, and wherein said first and second stacks are compressed between first and second distally opposed bearing plates which receive said first and second shafts, said bearing plates being secured to said casing in compression against said stacks;
• means for securing said first and second bearing plates to said casing;
• gearing means disposed on adjacent ends of said first and second shafts for coupling the rotations thereof in common, to thereby effect counter-rotation of said shafts;
• and
• drive means connected to an end of said first shaft for driving said first shaft in rotation.

Apparatus for comminuting solid waste material comprising:

• a casing defining therein a comminution chamber with inlet and outlet ports thereto disposed on opposing sides of said comminution chamber;
• a comminutor assembly including cooperating substantially parallel first and second shredding stacks located in said comminution chamber and respectively having a plurality of first concentric laminar cutting elements mounted on a first shaft in interspaced relationship with a plurality of second laminar cutting elements mounted concentrically on a second shaft, each cutting element having teeth shaped for cutting in both of two opposite directions of rotation, and wherein the cutting elements of each stack are positioned between and separated in an axial direction by laminar spacers which are coplanar with the elements of the other stack whereby a cutting element from one shredder and a spacer from the other shredder form a pair of interactive shredding members, wherein the minimum distance of separation between different ones of the teeth of a cutting element and the spacer associated therewith in a pair of shredding members differs as between at least some of said teeth of said cutting element, and wherein said first and second stacks are compressed between first and second distally opposed bearing plates which receive said first and second shafts, said bearing plates being secured to said casing in compression against said stacks;
• means for securing said first and second bearing plates to said casing;
• gearing means disposed on adjacent ends of said first and second shafts for coupling the rotations thereof in common, to thereby effect counter-rotation of said shafts;
• and
• drive means connected to an end of said first shaft for driving said first shaft in rotation.