Abstract:
A cutting unit for comminuting bulky feedstock and a device into which such a cutting unit is integrated. The cutting unit has a cutting chamber, which is arranged along a conveying direction and is formed by paired opposite cross walls and longitudinal walls. A knife for comminuting the feedstock can be moved transverse to the conveying direction across the entire cross section of the cutting chamber from one cross wall to the opposite cross wall. To also assure the complete cutting through of fiber-containing or film-shaped feedstock, a counter knife is arranged in the cross wall opposite to the blade of the knife which is stationary relative to the cutting chamber and which during the cutting process forms a cutting gap with the blade of the knife. The wall segment of the opposite cross wall is placed movable in the advance direction of the knife.
Abstract:
A rotor and device for the comminution of input material is provided. The rotor includes a drive shaft on which a predetermined number of rotor discs are provided and over the circumference of which grinding tools are arranged. In accordance with an embodiment, it is provided that frictional connection elements are arranged between the rotor discs forming axial ends of the rotor and the shaft for transferring a torque, and that power transmission elements are arranged in a contact surface of two adjacent rotor discs and that the rotor discs can be clamped together with axially acting clamping elements.
Abstract:
A device for comminuting feedstock having a rotor, rotating within a housing around an axis, with rotor tools lying within the outer circumferential region on a circumferential ring and a stator, associated with the rotor, with stator tools arranged concentrically in the outer circumferential region and forming a comminuting surface, whereby the rotor tools and the stator tools lie opposite at a distance with the formation of a working gap and the stator tools are formed by segments, which to form the comminuting surface rest on the stator with their rear side and lie with their long sides against one another. The segments are attached to the stator in each case with their first short side and second short side by a positive fit, whereby the stator has a clamping element, which works together with the first short side and/or second short side to clamp the segments against the stator.
Abstract:
A device for processing free-flowing input material is provided that includes a rotor rotating around a shaft within a housing, the rotor being fitted over its circumference with rotor tools. Stator tools, permanently fixed to the housing, are arranged, which are disposed opposite the rotor tools allowing a working gap and interact with the rotor tools to process the input material. The stator tools are held in a holder, forming a tool unit. The tool units are made self-supporting over the length of the rotor and end sections of the tool units are fixed removably in respective clamping devices.
Abstract:
A device for comminuting feed material is provided that has a housing including longitudinal walls and transverse walls for accommodating a rotor that rotates about a longitudinal axis. The rotor is equipped about its circumference with processing tools, and has, on its faces, an annular disk, each of which is concentric to the longitudinal axis. Within the housing, at least one screen path extends over a part of the circumference of the rotor, each screen path running at a slight radial distance from the annular disks while forming a seal gap. The feed material is supplied to the rotor through a feed shaft and is directed out of the device via a material discharge extending downstream of the screen path. In order to return material that emerges through the seal gap to the remaining material flow annular disks are each arranged with an axial clearance A from the transverse walls.
Abstract:
A device for comminuting input material, especially for fine and ultrafine grinding of input material, includes a rotor revolving around a shaft inside a housing, the rotor having a cylindrical or conical jacket surface. An annular gap is present between the housing and the jacket surface, the gap forming a comminution zone and the input material being introduced axially to it. To increase the economic efficiency of the device, it is provided that a plurality of first pin-shaped comminuting tools for comminuting the input material are disposed over the circumference of the rotor, wherein the tools are aligned with their longitudinal direction perpendicular to the jacket surface in the direction of the housing.
Abstract:
A device for mixing, grinding, drying, deagglomeration, crushing, or coating of feedstock with a rotor is provided, rotating around an axis within a housing, and a stator, fixed relative to the housing, encompassing the rotor with maintenance of a radial working gap. The rotor has rotor tools, which are distributed over its outer surface and whose active edges for crushing the feedstock work together with the stator tools on the inner circumference of the stator. In this regard, the feedstock is supplied in the carrier gas stream to the working gap. For effective processing of the feedstock, it is proposed according to the invention that in the outer surface of the rotor a plurality of indentations is introduced, whereby areas between two adjacent indentations form webs, which form the active edges of the rotor tools.
Abstract:
A device for the determination of the state of wear of comminuting tools a comminuting tool, a comminuting device with such a comminuting tool, and a corresponding method. A reference surface is provided on the comminuting tool, the surface from which the distance A0, A1 to the active edges of the comminuting tool can be determined. The degree of wear then results from a comparison of the original distance A0 in an unused comminuting tool with the distance A1 reduced due to wear after a certain period of use. The thereby achieved advantage is that the state of wear can be determined independent of the general wear of the comminuting device. A distortion of the measurement result caused by this is therefore ruled out.
Abstract:
A device for comminuting feedstock is provided that includes a cutting tool with a first rotor and at least one second rotor, each of which rotate around their longitudinal axis with an opposite rotation direction. Each rotor is provided with a number of cutting discs, which are arranged at an axial distance to one another. In this case, the cutting discs of the first rotor are located on gaps and with radial overlapping relative to the cutting discs of the second rotor. The cutting discs along their circumference have support surfaces for accepting cutting tools, whose cutting edges move past one another over the course of the rotation of rotors with the formation of a cutting clearance. For the positionally precise fixation of the cutting tool on the cutting discs, a positive fit is formed between the cutting tools and cutting discs, a positive fit groove running in the plane of the cutting disc is arranged in the common contact area, the groove in which at least one positive fit strip engages.
Abstract:
Apparatus for comminuting pourable feedstock, comprising a housing surrounding a comminution space, in which housing a rotor rotating about an axis is disposed, the rotor being equipped around its circumference with rotor tools. A screen is disposed here along one portion of the rotor circumference. The apparatus is charged with feedstock through a product inlet, and the sufficiently comminuted product is drawn off through a product discharge. The product discharge includes a suction bin to collect the screen through fraction, which bin can be connected to a suction line to allow the collected product to be transported away. In order to improve the accessibility of the rotor for repair and maintenance work while simultaneously preserving a compact constructive design of the apparatus, the screen and the suction bin form one unit that can be swiveled as a whole about a horizontal swivel axis relative to the rotor.