An apparatus for decompressing/pulverizing and fluffing up bales of compressed thermal insulation includes grinding wheel and a grinding die adjacent thereto thereby forming a gap therebetween. The grinding wheel is constructed with a plurality of plane members cut from flat steel material and stacked longitudinally about a rotatable shaft. The plane members each include a perimeter surface which together form the grinding wheel mantle surface and protrusions thereon. Coupling rods extend through aligned holes in the stacked plane members and retain the plane members in their stacked positions. The grinding die is constructed with a plurality of die plates cut from flat steel material and which are stacked longitudinally. The die plates each include an abutment surface which together form the grinding die surface and protrusions thereon. Coupling rods similarly extend through aligned holes in the stacked die plates and retain the die plates in their stacked positions.

Embodiments described herein relate to material-removal systems as well as cutting tools and cutting tool assemblies that may be used in the material-removal systems. More specifically, for example, the material-removal systems, and particularly the cutting tools, may engage and fail target material. In some instances, the material-removal systems may be used in mining operations.

A reversible grinder pump with cutter plate and cutter blade, wherein the cutter plate is attached to an inlet of the reversible grinder pump and is located adjacent to the cutter blade, wherein the cutter plate includes pairs of angled openings, wherein each of the pair of angled openings extends through the cutter plate and has a shape which is a mirror image of the other angled opening of the pair of angled openings, when viewed from above a surface of the cutter plate. The cutter blade of the reversible grinder pump contains a pair of triangular cross section, prism-shaped cutting edges, which are congruent to each other and reflective, extending in opposite directions from each other.

Embodiments of the present invention pertain to a plant trimming machine. Plants are placed in a tumbler. As the tumbler rotates, leaves are sucked through the tumbler by a vacuum assembly and cut by at least one rotatable blade adjacent to the tumbler. The tumbler and blade are housed in separate cartridges so that they can be easily removed and inserted. Thereby, it is relatively easy to clean and replace a tumbler or blade with minimal downtime to the machine.

Embodiments of the present invention pertain to a plant trimming machine. Plants are placed in a tumbler. As the tumbler rotates, leaves are sucked through the tumbler by a vacuum assembly and cut by at least one rotatable blade adjacent to the tumbler. The tumbler and blade are housed in separate cartridges so that they can be easily removed and inserted. Thereby, it is relatively easy to clean and replace a tumbler or blade with minimal downtime to the machine.

A machine includes a motor; and a transmission to drive a knife plate. The knife plate includes a plurality of knife blades. The machine further includes a die plate. The knife plate and the die plate interface at a cutting edge of the knife plate. The machine cuts feed material from larger sized pieces to smaller pieces by forcing the material through the die plate and cutting it with the knife plate.

A machine includes a motor; and a transmission to drive a knife plate. The knife plate includes a plurality of knife blades. The machine further includes a die plate. The knife plate and the die plate interface at a cutting edge of the knife plate. The machine cuts feed material from larger sized pieces to smaller pieces by forcing the material through the die plate and cutting it with the knife plate.

The present disclosure relates to a system for a material reducing machine that allows a reducing rotor to be selectively configurable in a plurality of different reducing configurations. The different reducing configurations in which the reducing rotor can be configured can include reducing configurations having reducers located at different positions, reducing configurations having different reducer densities (e.g., different overall densities and different regionalized densities), reducer configurations having different reducer counts, reducer configurations having different reducer patterns, and reducer configurations having different lay-outs.

A pin mill includes a rotor plate mounted on a shaft and having concentrically spaced-apart circular arrays of pins arise from an end face. The rotor pins interdigitate with complementary concentric arrays of pins arising from a face of a stator mounted on a door. The door swings open on a hinge mounted on two translator pins so that the door can translate the interdigitated pins before swinging open so that the pins arrays do not collide with each other while the door is opening. The rotor operates within a cylindrical screen which retains particles being broken up until they are small enough to exit. The rotor also includes a circular array of vane knives which sweep closely within the screen and also entrain cooling air into the macerating volume of the mill. Oversized particles trapped in the screen also get cleared and split apart by the passing vane knives.

A pin mill includes a rotor plate mounted on a shaft and having concentrically spaced-apart circular arrays of pins arise from an end face. The rotor pins interdigitate with complementary concentric arrays of pins arising from a face of a stator mounted on a door. The door swings open on a hinge mounted on two translator pins so that the door can translate the interdigitated pins before swinging open so that the pins arrays do not collide with each other while the door is opening. The rotor operates within a cylindrical screen which retains particles being broken up until they are small enough to exit. The rotor also includes a circular array of vane knives which sweep closely within the screen and also entrain cooling air into the macerating volume of the mill. Oversized particles trapped in the screen also get cleared and split apart by the passing vane knives.