Grinding mechanisms for food waste disposers, and food waste disposers having grinding mechanisms are disclosed herein. The grinding mechanisms include a stationary grinding ring that includes a plurality of grater teeth, and a rotating shredder plate that includes at least one lug. The at least one lug may have at least a portion that is movable with respect to the top surface of the rotating shredder plate, or may be fin shaped.

A machine is configured to grind and/or shred a waste material and to mix the waste material with a filler material so as to dilute the waste material to a desired level, such as on a minority basis by weight. The machine also includes a blender that grinds or shreds the waste material and the filler material received from drum while mixing the materials together. Materials may be supplied to the blender by a drum located above the blender and/or a hopper located remote from the blender and coupled to the blender by a conveyor. The waste material may be rendered unusable and unrecognizable in the resultant mixture. A computer system can store the various measurements in an internal memory and/or transmit the various measurement to a remote server. Information that supports a finding of compliance with a given regulation can be transmitted to relevant parties.

A machine is provided including a receptacle for loading waste, a shredder, and a pusher to push waste toward the shredder. The receptacle has a constant cross-section between a waste loading opening and a communication opening with the shredder, and the pusher is a plate translatable in the receptacle, parallel to the axis along which the receptacle has the constant cross-section. The plate is dimensioned such that only an interstice exists between the plate edge wall and the walls defining the receptacle; the plate is movable between a withdrawn position able to be freed from said waste loading opening, and an end-of-travel position situated near the communication opening. The machine comprises a sealing gasket movable between a retracted position, which does not hinder the mobility of the plate in the receptacle, and a sealing position, which produces, in the end-of-travel position of the plate, sealing between the plate and the receptacle walls.

The present invention provides a glass wool cutting device. The device includes a cutting section housing that has a cutting section chamber, a feed port that is connected to the cutting section chamber, and a discharge port that is connected to the cutting section chamber. A stationary knife is disposed on the cutting section housing to protrude into the cutting section chamber and a movable cutter that has a rotary support body is disposed in the cutting section chamber and a movable knife is supported on the rotary support body to apply a shearing force to the glass wool together with the stationary knife. Additionally, a cutter actuator provides a driving force to the rotary support body.

A harvesting machine including a frame, a rotor assembly rotatably coupled to the frame configured to move crop material, and a plurality of knives movably attached to the harvesting machine. The rotor assembly includes a plurality of spaced apart rotating blades, wherein one or more of the plurality of knives extends into the spaces between the blades. Each of the plurality of knives includes a knife body and a cutting edge having a plurality of teeth, wherein each of the teeth includes a scallop or valley. Each one of the plurality of valleys extends from the knife body to the leading edge of one of the plurality of teeth, wherein adjacent valleys are located on opposite sides of the knife body. The valleys are lined with a wear resistant material to increase the longevity of the cutting edge and cutting ability.

A machine is provided including a shredder formed by at least two parallel series of contrarotating knives, alternating with counter-knives. The knives are carried by shafts and the edge of each counter-knife facing the opposite knife associated thereto has an arcuate portion. At least one counter-knife has a portion extending above the axis of the shaft and forming an arcuate edge centered on the axis of the other shaft of the shredder, this arcuate edge completing the arcuate portion. The arcuate portion has a notch formed on it, opening into the arcuate edge formed by this arcuate portion, and forming a tip oriented toward the upstream side of the counter-knife.

A quick blade repair and replacement enabled apparatus integrating medical waste shredding and sterilization is a dismountable integrally assembled vertical structure. Three chambers, including a loading and stirring, a shredding and a sterilization and discharging chamber are connected into a whole. Two repair gates are respectively on the left and right sides of the shredding chamber, they are designed as a whole together with the rotary blade shaft, when repair and replace the blades, only the repair gates need to be dismounted, and the replacement process can be finished outside the shredding chamber. The stationary blades are pressed on the inner wall of the shredding chamber by using binder plate, and bolts for securing the binder plate are screwed from outside.

An apparatus for recycling synthetic thermoplastic waste material combining heretofore multiple stage processing steps in a single stage shredder grinder pulverizer device. The apparatus has multiple interchangeable material processing blade sets on respective effacing engageable rotating and fixed blade mounts within a cooled material infeed and blade containment enclosure with multiple vacuum outlet ports and communicating vacuum ducts to draw off and transport processed material therefrom for separation and classification, as required. Each replaceable interchangeable processing blade set includes registerable shredding and grinding blades and annular pulverizing blade sets on fixed and movable mediums for progressive processing of waste material into uniform recyclable material.

A comminution device comprises a plurality of first cutting elements having first serrated cutting edges disposed on a first circular path; a second cutting element having a second serrated cutting edge corresponding to the first serrated cutting edges for cutting through cutting material, the second cutting element being displaceable about an axis of rotation on a second circular path concentric with the first circular path. The second serrated cutting edge comprises a plurality of jags and each jag comprises a radially inner flank and a radially outer flank, each at an angle to the axis of rotation. A drive rotationally drives the second cutting element about the axis of rotation and an adjustment mechanism by which the plurality of first cutting elements and the second cutting element are displaceable relative to each other axially in the direction of the axis of rotation, that a cutting gap between them is adjustable.

A cutter assembly is presented for mounting to one or more hammers of a rotor assembly of a grinding machine. The cutter assembly includes a base, a tip mount, at least one cutting edge and a wedge releasably secured to the tip mount, and a fastener securing the base and the tip mount to the hammer. The base includes a truncated pyramid key and the tip mount includes a corresponding truncated pyramid keyway. A wedge edge angle is defined between a wedge top face and side face. A cutting edge angle is defined between a cutting edge knife face and top face. The cutting edge angle can be larger than the wedge edge angle. The cutting edge angle can be in the range of about 30 to about 40 and a wedge edge angle can be in the range of about 40 to about 45.