Abstract: The invention relates to a device (10; 50) for mechanically comminuting materials, including a vertically extending comminuting chamber (14) having an upwardly extending supply side (15) and a downwardly extending discharge side. The comminuting chamber is enclosed by an circular cylindrical and/or conical downwardly expanded comminuting chamber wall (12), and in which at least one rotor (16, 18) rotating about a vertical rotor axis (R) is arranged, which is provided with striking tools (38) that extend radially into the comminuting chamber, at least during operation. The rotors (16, 18) are held in a stationary manner with respect to a support base (20) of the device, and the comminuting chamber wall is supported on the support base. According to the invention, the comminuting chamber wall is held in place by way of a lifting device in the direction of the rotor axis (R) in a height adjustable manner relative to the support base (20).

Abstract: The invention relates to a comminuting device including a cylinder casing which surrounds a comminuting chamber, in which several rotors can be operated independently from each other with individual drives, said rotors being driven by concentric shafts which are arranged concentrically to the central axis (z) of the comminuting chamber, said concentric shafts having a central shaft and at least one outer hollow shaft surrounding said central shaft. At least one lubricant line for connecting to a lubricant supply is arranged in the central shaft and/or in a shaft casing, the lubricant line being connected by at least one radial lubricant through guide to at least one bearing of the rotors.

Abstract: A device (10) for mechanically comminuting material conglomerates. The device includes a comminuting chamber (14) having a feed side and an outlet side, surrounded by a chamber wall with rotors (26, 28, 30) each including a rotor shaft and striking tools (38) extending radially into the comminuting chamber. The directions of rotation of the rotors (26, 28, 30) are opposite in at least two consecutive segments. An air stream device (31, 37, 39, 41) for leading a particle/air mixture out of the comminuting chamber (14) is arranged in connection with the comminuting chamber.

Abstract: The invention relates to a device (10) for mechanically comminuting material conglomerates composed of materials having different density and/or consistency, comprising a comminuting chamber (14) having a feed side and an outlet side, which comminuting chamber is surrounded by an in particular circular cylindrical and/or conical comminuting chamber wall (42) expanded in a downward direction and has at least two segments which are consecutive in an axial direction, in each of which at least one rotor (26, 28, 30) is arranged coaxially to the comminuting chamber, wherein each rotor has a rotor shaft and has striking tools (38) extending at least largely radially into the comminuting chamber at least during operation, a feeding cone (12), which covers the rotor shaft(s), is arranged above the comminuting chamber (14) on the feed side, and an inflow funnel (11) is arranged above the feeding cone (12), wherein an inflow region is formed between the inflow funnel and the feeding cone, the size (d) of which inflow r