The invention relates to a crusher unit (10), in particular an impact crusher, having an impact rotor (11), having at least one swivel-mounted impact rocker (20), wherein a crushing gap (15) is formed between the impact rotor (11) and the impact rocker (20), wherein the impact rocker (20) can be swiveled along an adjustment path by means of at least one gap-adjusting means (30) to set a gap width of the crushing gap (15), wherein the impact rocker (20) is mounted such that its weight force acts in the direction of a reduction of the crushing gap (15). For a high degree of operational safety, the crushing gap can be readjusted during operation in that at least one retaining device (50) is provided, which uses a retaining force to flexibly counteract a swiveling of the impact rocker (20) in the direction of the impact rotor (11). The invention also relates to a method for setting the crushing gap (15) of a crusher unit (10).

Device for introducing incoherent material into a machine for processing incoherent material including an external body which is configured to be passed through by an incoherent material and which defines inside it a passage channel having an inlet aperture and an outlet aperture. The device also includes mobile deviation device pivoted to the external body and configured to selectively modify the cross-section of the outlet aperture.

Device for introducing incoherent material into a machine for processing incoherent material including an external body which is configured to be passed through by an incoherent material and which defines inside it a passage channel having an inlet aperture and an outlet aperture. The device also includes mobile deviation device pivoted to the external body and configured to selectively modify the cross-section of the outlet aperture.

A rotary mill for grinding recycled glass materials into particles has a housing defining an impact chamber with a rotor in the chamber at the bottom of an inclined guide wall underneath the feed opening. The rotor has a plurality of axially extending, angularly spaced massive impact hammers so that the impact hammers impact and deflect the solid materials onto a plurality of shatter bars located at the peripheral wall. Each of the impact hammers has a leading blade element of a hardened steel which has a front face inclined relative to a bottom portion of the guide surface so that an outer edge of the front face is angularly advanced relative to an inner edge thereof.

A rotary mill for grinding recycled glass materials into particles has a housing defining an impact chamber with a rotor in the chamber at the bottom of an inclined guide wall underneath the feed opening. The rotor has a plurality of axially extending, angularly spaced massive impact hammers so that the impact hammers impact and deflect the solid materials onto a plurality of shatter bars located at the peripheral wall. Each of the impact hammers has a leading blade element of a hardened steel which has a front face inclined relative to a bottom portion of the guide surface so that an outer edge of the front face is angularly advanced relative to an inner edge thereof.

An impact crusher for crushing a feed material received through an opening of the crusher is provided. The crusher includes: a housing defining a crushing chamber; at least one elevation adjustable impact barrier mounted in the crushing chamber; a barrier adjustment mechanism configured to adjust an elevation of the at least one impact barrier within the crushing chamber; and a rotor mounted in the crushing chamber and turned by a drive mechanism. The rotor is configured to direct feed material toward the at least one impact barrier. The bather adjustment mechanism includes at least one hydraulic cylinder mounted to the at least one impact barrier. The cylinder includes a sensor for detecting an absolute extension of the cylinder. A system for crushing a crushable material including an impact crusher and controller is also provided herein.

An impact crusher for crushing a feed material received through an opening of the crusher is provided. The crusher includes: a housing defining a crushing chamber; at least one elevation adjustable impact barrier mounted in the crushing chamber; a barrier adjustment mechanism configured to adjust an elevation of the at least one impact barrier within the crushing chamber; and a rotor mounted in the crushing chamber and turned by a drive mechanism. The rotor is configured to direct feed material toward the at least one impact barrier. The bather adjustment mechanism includes at least one hydraulic cylinder mounted to the at least one impact barrier. The cylinder includes a sensor for detecting an absolute extension of the cylinder. A system for crushing a crushable material including an impact crusher and controller is also provided herein.

An apron return assembly having a pump that is adapted to convey a fluid, an apron actuator having an apron actuator cap side and an apron actuator rod side and being in fluid communication with the pump, an accumulator that is in fluid communication with the apron actuator cap side, a reservoir that is in fluid communication with the apron actuator, and a tension rod having a frame end and an apron end. In the preferred apron return assembly, the apron actuator and the tension rod are adapted to move the apron between a closed position and an open position. A method for moving the apron from the open position to the closed position.

A device for the comminution of moisture-containing materials includes a housing that forms an impact chamber having a rotating striking means driven therein via a shaft. The housing includes a bottom plate, a cover, a wall connecting the bottom plate and the cover, an inlet opening and an outlet opening. A tub including at least one layer of plastic is arranged at least along the bottom plate. A wear plate is arranged on an other side of the layer of plastic. Objects of the invention include increasing the wear resistance of the device, realizing self-cleaning effects and enabling simple and safe cleaning, in particular, at a standstill.

A method for detecting wear in crushers, having a wearing part (2) mounted on a drive shaft (1), during idle operation is described in which downtimes that impair crusher productivity can be eliminated and nevertheless reliable wear detection is made possible with low risk of injury to machine operators. The drive shaft (1) is accelerated from a starting angular speed (?1) to an end angular speed (?2) with a specified acceleration, and the drive energy required for this is ascertained, whereupon the wear of the wearing part (2) is ascertained as the value assigned to the required drive energy in a specified wearing-part characteristic curve (3, 4, 5).