An impact crusher for grinding and separating solid material has a base, a rotor on the base having an upright shaft defining an upright rotor axis about which the rotor is rotatable, and a drum fixed on the base, spacedly surrounding the rotor, and formed by a pair of generally semicylindrical drum shells fitted together at a plane including the rotor axis. An array of axially extending and angularly substantially equispaced replaceable ribs is provided on an inner surface of the drum. A plurality of impact hammers are angularly substantially equispaced around the rotor and orbitable past the ribs on rotation of the rotor.

An apparatus for tearing meat is disclosed. The apparatus includes a gravity-fed hopper including at least one sidewall that forms a first opening configured to receive meat articles and a second opening configured to discharge torn meat articles. The apparatus includes a rotatable spindle element positioned at least partially within the hopper and downstream of the first opening. The rotatable spindle element includes a shaft having a longitudinal axis and a plurality of teeth coupled to the shaft, the teeth being spaced apart from one another. The apparatus includes a plurality of rods, which extend from the sidewall spaced apart from one another and which are interlaced with the plurality of teeth, and a motor coupled to the rotatable spindle element configured to rotate the rotatable spindle element to cause at least some of the plurality of teeth to rotate and pass between two different rods.

A mill includes a housing with a first end portion, a second end portion, and a lateral area disposed therebetween. The housing includes a raw material inlet, an air inlet, a recirculated material inlet, and a material outlet. An impeller is supported by the housing and includes a shaft disposed along the longitudinal axis of the housing, with a plurality of curved blades.

Various embodiments of a hammermill system, hammer, and methods are disclosed. A hammermill hammer comprises a metal composite comprising a plurality of inserts and a body portion disposed between each of the plurality of inserts. The composition of the plurality of inserts is different than composition of the body portion. The material of the plurality of inserts has a greater abrasion resistance than the material of the body portion and the material of the body portion has a greater impact resistance than the material of the inserts. The hammers produced have improved wear resistance and longer useful life compared to conventional hammermill hammers.

Various embodiments of a hammermill system, hammer, and methods are disclosed. A hammermill hammer comprises a metal composite comprising a plurality of inserts and a body portion disposed between each of the plurality of inserts. The composition of the plurality of inserts is different than composition of the body portion. The material of the plurality of inserts has a greater abrasion resistance than the material of the body portion and the material of the body portion has a greater impact resistance than the material of the inserts. The hammers produced have improved wear resistance and longer useful life compared to conventional hammermill hammers.

The present invention relates to a striking tool for crushing metal objects or stone materials, manufactured from an iron-based material and comprising a bearing section (3), into which a bearing opening (4) provided for the freely swinging mounting of the striking tool (1) on a metallic shaft is formed with an inner circumferential surface (7) surrounding the bearing opening (4), and comprising a striking section (2), which during use is exposed to a striking load by contact with the material to be crushed, and a rotor for a machine for crushing metal objects or stone materials, comprising at least one metallic shaft, on which at least one formed striking tool (1) is mounted with its bearing opening (4), with there being metallic frictional contact between the outer circumferential surface of the shaft and the inner circumferential surface (7) of the bearing opening (4) of the striking tool (1). The striking tool according to the invention allows, using simple means, the danger of excess wear in the region of its bearing opening to be minimized even under high loads. Moreover, the rotor according to the invention enables, using simple means, an optimally long useful life of the striking tools mounted on it in a swinging manner. This is achieved in that a recess (8a to 8n) is formed at least into one section of the inner circumferential surface (7) of the bearing opening (4) which is provided to absorb metallic material of the striking tool (1) laterally adjoining the recess (8a to 8n) and displaced during use.

The present invention relates to a striking tool for crushing metal objects or stone materials, manufactured from an iron-based material and comprising a bearing section (3), into which a bearing opening (4) provided for the freely swinging mounting of the striking tool (1) on a metallic shaft is formed with an inner circumferential surface (7) surrounding the bearing opening (4), and comprising a striking section (2), which during use is exposed to a striking load by contact with the material to be crushed, and a rotor for a machine for crushing metal objects or stone materials, comprising at least one metallic shaft, on which at least one formed striking tool (1) is mounted with its bearing opening (4), with there being metallic frictional contact between the outer circumferential surface of the shaft and the inner circumferential surface (7) of the bearing opening (4) of the striking tool (1). The striking tool according to the invention allows, using simple means, the danger of excess wear in the region of its bearing opening to be minimized even under high loads. Moreover, the rotor according to the invention enables, using simple means, an optimally long useful life of the striking tools mounted on it in a swinging manner. This is achieved in that a recess (8a to 8n) is formed at least into one section of the inner circumferential surface (7) of the bearing opening (4) which is provided to absorb metallic material of the striking tool (1) laterally adjoining the recess (8a to 8n) and displaced during use.

A locking device for a crusher rotor of a horizontal shaft impact crusher includes a locking-wedge having a first through bore, a screw element for driving the locking-wedge into a locking position between a rotor arm and the hammer element and for holding the locking-wedge in the locking position, thereby fixing the hammer element to the rotor disc, a locking nut for receiving the locking screw element, and a locking nut holder. The screw element is at least partly located in the first through bore and extends through the locking nut. The locking nut holder holds the locking nut in a manner that prevents the locking nut from rotating as the screw element is driven through the locking nut.

A protection device for tools for cutters and shredders and the like, arranged on a tool-holder seat for a tool-holder rotor rotatable about the axis of the rotor, said tool being housed in a seat arranged on the tool-bolder rotor, and formed by a first surface arranged at the front in the cutting direction and a second surface onto which the tool is fixed with its opposite surface to the cutting direction, the tool having a body that has a front surface in the rotation direction of the rotor, and a rear surface opposing the front surface. The tool and/or the seat having lateral projections and a protection device is dismountable connected to the seat of the tool, laterally as a protection for the tool and the plates being arranged partially between the lateral projections, of the tool and/or the seat of the tool, and the tool-holder rotor.

The various embodiments disclosed and pictured illustrate a curved hammer for comminuting various materials. The illustrative embodiments pictured and described herein are primarily for use with a rotatable hammermill assembly. The curved hammer includes a connection portion having a rod hole therein, a contact portion for delivery of energy to the material to be comminuted, and a curved neck portion affixing the connection portion to the contact portion. In other embodiments, a shoulder is positioned around the periphery of the rod hole for added strength. In still other embodiments, a neck reinforcement is positioned along a portion of the neck for increased strength. A weld or plurality of welds may be affixed to various surfaces of the contact portion to aide in comminuting and/or longevity of the curved hammer.