A comminution apparatus and a method for performing service of such an apparatus
AssigneeMetso Denmark A/S
InventorsJohannes Kjaersgaard, Tommy Langelund Jakobsen
Life of this patent
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Abstract
A comminution apparatus, a method for replacing wear parts of such an apparatus and a cutting table unit for use in such an apparatus are disclosed. The apparatus comprises a cutting module, a drive module and a top module. The main wear parts are present in the cutting module, which may be replaced, in its entirety or in part, without disconnecting the drive module from the apparatus or from an external power source.
Claims21
A comminution apparatus for comminuting waste material, such as domestic or industrial waste material, bulk objects or the like, said apparatus comprising:
- a supporting structure;
- a cutting module being arranged on the supporting structure;
- a top module defining a housing for receiving waste material to be comminuted and being detachably connected to the cutting module at first interface;
- and
- a drive module being arranged on the supporting structure next to the cutting module;
- wherein said cutting module includes:
- a stationary cutting table unit which has an engagement side facing the drive module and a one or more sets of fixed counter knives which define a cutting table forming a bottom of said housing, the counter knives in each set being mutually separated by openings through the cutting table, and
- one or more rotatable cutting shafts which extends in an axial direction, each shaft being provided with a set of rotating knives which partly extend down into said openings through the cutting table and which during operation of the apparatus cooperate with the counter knives for comminuting the waste material;
- wherein said drive module includes:
- a stationary drive module body which has an engagement side facing the cutting module and which is connected to the supporting structure, and
- one or more drive units which are supported by the drive module body and arranged to rotatably drive said cutting shafts;
- wherein the engagement side of the cutting table unit and the engagement side of the drive module body are directly and detachably interconnected at a second interface extending transversally to the axial direction between the cutting module and the drive module;
- and
- wherein the cutting shafts are detachably connected to the drive units.
A method for replacing wear parts of a comminution apparatus arranged to comminute waste material, such as domestic or industrial waste material, bulk objects or the like,
- wherein said method is performed on a comminution apparatus which comprises:
- a top module defining a housing for receiving and accommodating said waste material,
- a cutting module being arranged under the top module and including one or more rotatable cutting shafts with rotating knives, and a cutting table unit with stationary counter knives co-operating with said rotating knives, and
- a drive module being arranged next to the cutting module and including a drive module body which is directly and detachably connected to the cutting table unit at an interface being located between the cutting module and the drive module and extending transversally to the cutting shafts, and which supports one or more drive units for driving said cutting shafts;
- and
- wherein said method comprises:
- disconnecting and removing the top module for obtaining access to the cutting module;
- disconnecting the cutting module from the drive module by disconnecting the cutting table unit from the cutting module body at said interface, and by disconnecting the cutting shafts from the drive units;
- removing the cutting module;
- and
- replacing at least the cutting table unit with a replacement cutting table unit by detachably connecting the replacement cutting table unit to the drive module body at said interface.
(canceled)
A cutting table unit for use in a comminution apparatus for comminuting waste material, the comminution apparatus having one or more cutting shafts extending in an axial direction and a drive module, said cutting table unit comprising:
- one or more sets of counter knives which extend in a transverse direction in relation to the axial direction of the one or more cutting shafts of the comminution apparatus;
- and
- a frame in which the counter knives are fixedly attached to form a cutting table for the waste material,
- wherein said frame has a proximal end provided with connector parts which are structured and arranged for detachably connecting the cutting table unit to the drive module of the comminution apparatus, wherein said connector parts are structured and arranged to transfer axial, vertical and transversal forces acting in an interface between the cutting table unit and the drive module during operation of the comminution apparatus;
- and
- wherein said connector parts comprises at least a first connector part structured and arranged for transferring mainly said axial forces, at least a second connector part structured and arranged for transferring mainly said vertical forces, and at least a third connector part which is structured and arranged for transferring mainly said transversal forces.
Dependencies are inferred from the claim text.