EP2454019A2 - Couteau pour machine de fragmentation et utilisation d'un tel couteau dans une machine de fragmentation - Google Patents

Couteau pour machine de fragmentation et utilisation d'un tel couteau dans une machine de fragmentation

Info

Publication number
EP2454019A2
EP2454019A2 EP10737771A EP10737771A EP2454019A2 EP 2454019 A2 EP2454019 A2 EP 2454019A2 EP 10737771 A EP10737771 A EP 10737771A EP 10737771 A EP10737771 A EP 10737771A EP 2454019 A2 EP2454019 A2 EP 2454019A2
Authority
EP
European Patent Office
Prior art keywords
knife
groove
side surfaces
groove arrangement
grooves
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP10737771A
Other languages
German (de)
English (en)
Inventor
Martin Friz
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Weima Maschinenbau GmbH
Original Assignee
Weima Maschinenbau GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Weima Maschinenbau GmbH filed Critical Weima Maschinenbau GmbH
Publication of EP2454019A2 publication Critical patent/EP2454019A2/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C18/00—Disintegrating by knives or other cutting or tearing members which chop material into fragments
    • B02C18/06—Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives
    • B02C18/14—Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives within horizontal containers
    • B02C18/145—Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives within horizontal containers with knives spaced axially and circumferentially on the periphery of a cylindrical rotor unit
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C18/00—Disintegrating by knives or other cutting or tearing members which chop material into fragments
    • B02C18/06—Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives
    • B02C18/16—Details
    • B02C18/18—Knives; Mountings thereof
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C18/00—Disintegrating by knives or other cutting or tearing members which chop material into fragments
    • B02C18/06—Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives
    • B02C18/16—Details
    • B02C18/18—Knives; Mountings thereof
    • B02C2018/188—Stationary counter-knives; Mountings thereof

Definitions

  • the invention relates to a knife for. a crusher and the use of such a knife in a crusher.
  • waste such as waste wood, wood from building demolition, plastic products such as bumpers, material left over from wood and plastic, packaging, paper, data carriers, etc.
  • the blades of the rotor work either only against the material to be shredded or against a counter blade whose contour of the clear contour of the rotating rotor is adapted so that the counter blade forms cutting gaps together with the blades of the rotor, or both.
  • irregular waste material can be crushed to granulated material of predetermined grain size.
  • Knife as a thorn can penetrate into the material.
  • BESTATIGUNGSKOPIE It has now been found that it is possible to considerably improve the comminution performance of shredders equipped with such knives by providing a groove arrangement in at least one of the side faces of the knife.
  • a local geometry of the cutting edge which on the one hand extends the effective length of the cutting edge, on the other hand creates additional tips that can attack on the material, to take it or frictionally entrain (moving knife) or hold (fixed counter blade).
  • a corresponding knife is the subject of claim 1.
  • the blades for comminution rotors are usually designed and installed in such a way that two side surfaces protrude beyond the circumferential surface of the rotor core and work together with the comminuted material and, if appropriate, a counterblade in order to split, cut or mill the comminuted material.
  • the knives are therefore often feasible to put not yet used cutting edges so that they survive over the rotor core.
  • a knife according to claim 2 has at least two such side surfaces, each carrying a groove arrangement, which are used sequentially can .
  • a knife as indicated in claim 3, always provides localized cutting edges with any transfer.
  • a knife according to claim 4 has distributed over its length local structures.
  • the knife is a counter knife
  • the advantages mentioned above for a rotor knife are also obtained for the counter knife. This is because, in the comminution processes, it is not the absolute movement but the relative movement between the comminution material and the knife or
  • Figure 1 is a schematic vertical center section
  • a crusher having a knife-fitted rotor and a counter knife cooperating with the latter;
  • FIG. 2 is a plan view of a portion of the blade-tipped rotor and the counter knife on an enlarged scale;
  • FIG. 3 is a perspective view of a knife
  • Figure 4 is a plan view of the knife of Figure 3;
  • FIG. 5 shows a diagonal section through the knife
  • Figure 6 is a side view of the knife of Figure 3;
  • Figure 7 is a perspective view of another
  • Knife which is attached to the rotor of the machine
  • Figure 1 is usable;
  • Figure 8 is a plan view of the knife of Figure 7;
  • Figure 9 is a side view of the knife of Figure 7;
  • Figure 10 is a perspective view of another
  • Knife as it (possibly together with a complementary counter knife) can also be used on the rotor of the machine of Figure 1;
  • Figure 11 is a plan view of the knife of Figure 10.
  • FIG. 12 shows a diagonal section through the knife
  • FIGS. 13 to 15 further perspective views
  • Figure 18 is a plan view of a knife body blank
  • the bottom of the reservoir 10 consists of two inclined inclined walls 18, 20 and a horizontal bottom wall 22. Below the lower end of the wall X8 runs a total of velvet 24 designated crushing roll to. This has a roller body 26 with a plurality of axially
  • the roller base body 26 has at its two end faces integrally formed stub shafts 34, which run in bearings, not shown, which are supported by the rear and front wall of the reservoir 10.
  • the crushing roller 24 is counteracted by a geared motor 36
  • the bottom wall 22 with respect to the axis of the comminution cylinder 24 is in the downward direction.
  • th offset in the drawing right free section is formed by a counter knife 38 having teeth 40 at the free end, between which gaps 42 remain.
  • Arrangement is chosen so that the knife body 32 can pass through the gaps 42 with little play d and between the teeth 40 and the circumferential ribs 28 remains a gap s, which is indeed greater than the working gap between the knife body 32 and counter knife 38, however so small that no large pieces of material can jam there.
  • a cylindrical perforated screen 44 is disposed, over which the blade body 32 passes with a small clearance.
  • the perforated screen 44 is detachably attached at its peripheral ends to the wall 18 and to the counter-blade 38 (or a housing section adjacent thereto), e.g. by means of tabs 43 and screws 45.
  • a screw conveyor 48 passes, which by a
  • Motor 50 is driven, as indicated schematically.
  • the screw conveyor 48 thus promotes crushed material from the collecting channel 46 into a dispensing nozzle 52.
  • the attachment of the knife body 32 to the roll base body 26 is carried out using square prismatic knife carrier 60, which is welded into the knife receivers 30 and is provided with a central threaded bore 62. With this a threaded bolt 64 cooperates, which extends through a stepped bore 68 of the knife body 32. Similarly, the counter knife 38 is connected by threaded bolt 70 with threaded holes 72 of a carrier 74 of the machine frame.
  • the knife bodies 32 fastened to the roll base 26 are dimensioned such that a radial projection of the knife bodies 32 is obtained via the peripheral ribs 28. You get such a close
  • the knife body 32 has a (in the direction of rotation) front main surface 82 and a (in the direction of rotation) rear main surface 84, which are square in plan view.
  • the main surface 82 is spherically concave, as also seen in the drawing, the main surface 84 even.
  • Edges of the major surfaces 82, 84 are joined by four side surfaces 86, 88, 90, 92, which together define a square prism. At the intersections of the side surfaces with the Main surface 82 results in each case a circular arc-shaped cutting edge 94, and at the interfaces between two adjacent cutting edges 94 is obtained in each case one
  • roller base body 26 On the roller base body 26 are each a cutting tip 96 and two adjacent cutting edges 94 on the clear contour of the roller body 26 over, so that they come in circulating crushing roller 24 with the comminuted material in the storage 10 in contact and together with the teeth 40 of the counter knife 38 forming cutting gaps.
  • the same angle of attack arranged individual grooves 100 whose width and depth is significantly smaller than the length of the corresponding cutting edge 94.
  • the width of the grooves 100 1 to 7 mm, preferably about 2 to 5 mm, the depth of about 40% to 70% the width, preferably about 50%.
  • the typical edge length of a knife body is between about 40 mm and about 100 mm.
  • the grooves 100 form together with the major surfaces
  • the front main surface is denoted by 106, the rear main surface with 108.
  • the counter knife 38 has a strip-shaped base body 110, which
  • rotor-mounted teeth 40 which have the shape of isosceles triangles with an opening angle of 90 °, so that a zigzag-shaped cutting edge 116 of the counter knife with small radial clearance can pass the cutting edges 94 of a knife body 32.
  • the cutting edge 116 is the cut line
  • Counter knife 38 provided with a Nutschar, as shown in Figure 2 in a magnifying glass.
  • the exemplary embodiment according to FIGS. 7 to 9 differs from that according to FIGS. 3 to 8 in that the main surface 82 is flat and that the tips of the square are flattened by facet surfaces 122, which are likewise provided with a groove group 98, the inclination of the Grooves of the latter to the inclination of the grooves in the Side surfaces 86, 88, 90, 92 is opposite, such as
  • FIG. 9 shows.
  • Both major surfaces 82, 84 are concave-shaped.
  • Knife axis Knife axis.
  • Geometries in particular isosceles and equilateral triangles.
  • FIG. 16 shows modified groove geometries, which are alternative for side surfaces of a measuring body or a
  • Figure 16 has on the left lower side surface 86 grooves 100, which are arranged at a greater distance from each other and deeper, and in the lower right side surface 88 grooves 100, which are arranged at a small distance from each other and flatter.
  • grooves 100 which do not have a rectangular cross-section but have a cross-section and a triangular cross-section. It also has some depth.
  • a groove 100 having a circular cross-sectional cross-section, the center of the circle being offset inwardly from the side surface, so that wedge-shaped cutting edges 128 are obtained at the groove edge.
  • Other groove sections and other groove distances are conceivable.
  • the grooves need not extend over the entire height of a side surface.
  • the grooves can only one over
  • Number of cutting tips 96 can increase.
  • M1 is the drawing plane piercing point of the axis of the spherical cap of the major surface 82 of FIG. 3 and 96-1 having the major surface geometry
  • M3 is also used to denote the plane-of-puncture points of the axes of eight spherical-diameter spherical caps of the spherical cap to M1, and 96-3 the cutting tips obtained with this major-surface geometry. The latter are indicated by filled in small triangles.
  • the area of the main area lying within the polygon delimited by the centers M2-i or M3-i (i 1, 2, 3,. replace with the corresponding inner area of the spherical cap to the center Ml.
  • Dome number may also be useful regardless of providing grooves in side surfaces of the knife body.
  • a knife body blank 124 is shown, along along the edges with
  • soldered strip-shaped carbide inserts 126 is provided.
  • the grinding of the main surfaces of the knife body and the incorporation of the grooves 100 takes place in such a knife body after the application of the hard metal inserts 126th
  • cemented carbide inserts it is also possible to use local armorings which have been introduced into previously produced cutouts of the base body.

Landscapes

  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Crushing And Pulverization Processes (AREA)
  • Threshing Machine Elements (AREA)

Abstract

La présente invention concerne un couteau (32) qui peut être employé comme outil de fragmentation d'un rouleau de fragmentation ou comme contre-couteau d'une machine de fragmentation. Selon l'invention, dans les faces latérales (86, 88, 90, 92) qui relient les faces principales (82, 84) du couteau sont pratiquées des rainures (100) qui forment avec les faces principales (82, 84) aux emplacements de coupe, des sections d'arête (102) en retrait d'une arête de coupe (94). Ces sections d'arête de coupe (102) permettent d'augmenter l'efficacité de fragmentation d'une machine de fragmentation fonctionnant avec un tel couteau, qu'il soit employé comme couteau d'un rouleau de fragmentation ou comme contre-couteau coopérant avec le rouleau de fragmentation.
EP10737771A 2009-07-16 2010-07-16 Couteau pour machine de fragmentation et utilisation d'un tel couteau dans une machine de fragmentation Withdrawn EP2454019A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102009033584A DE102009033584A1 (de) 2009-07-16 2009-07-16 Messer für eine Zerkleinerungsmaschine und Verwendung eines solchen in einer Zerkleinerungsmaschine
PCT/EP2010/004346 WO2011006666A2 (fr) 2009-07-16 2010-07-16 Couteau pour machine de fragmentation et utilisation d'un tel couteau dans une machine de fragmentation

Publications (1)

Publication Number Publication Date
EP2454019A2 true EP2454019A2 (fr) 2012-05-23

Family

ID=43334759

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10737771A Withdrawn EP2454019A2 (fr) 2009-07-16 2010-07-16 Couteau pour machine de fragmentation et utilisation d'un tel couteau dans une machine de fragmentation

Country Status (4)

Country Link
US (1) US20120205473A1 (fr)
EP (1) EP2454019A2 (fr)
DE (1) DE102009033584A1 (fr)
WO (1) WO2011006666A2 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9144803B2 (en) 2011-06-24 2015-09-29 Vecoplan Llc Shredder with multi-point cutters
US9132429B2 (en) 2013-02-07 2015-09-15 Zenith Cutter, Inc. Capped shredder knife
AT514269B1 (de) * 2013-05-14 2018-12-15 Steininger Werner Schneidelement
PL3248688T3 (pl) * 2016-05-27 2018-10-31 Untha Shredding Technology Gmbh Nóż do maszyny rozdrabniającej
CN112044557B (zh) * 2020-08-31 2022-01-07 宣城嘉怡纸箱包装有限公司 一种根据刀片旋转的力判断并解决纸量的破碎机辅助装置

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1674911A (en) * 1927-11-01 1928-06-26 Arthur M Mcphillips Beater-engine roll
US1814879A (en) * 1929-08-26 1931-07-14 Noble & Wood Machine Co Jordan engine plug
US2120482A (en) * 1935-04-18 1938-06-14 Bolton John W & Sons Inc Jordan engine with crimped members
US2781176A (en) * 1954-07-02 1957-02-12 Unipulver Ltd Rotor rim construction for fixation of blades
US3582008A (en) * 1969-07-08 1971-06-01 Nordberg Manufacturing Co Bimetal crusher liner
DE9421212U1 (de) * 1994-12-06 1995-08-17 Jahn, Richard, Dipl.-Ing. (FH), 55595 Argenschwang Schneid- und Hackmesser mit Stabilisierungskanten zum Einsatz in Zerkleinerungsvorrichtungen
US5911374A (en) * 1997-11-21 1999-06-15 Cb Manufacturing & Sales Co., Inc. Blade shoe for a shear shredding apparatus
EP0956901A1 (fr) * 1998-05-12 1999-11-17 Holz-, Metall-, Abfall-, Recyclingtechnik GmbH Arbre coupant muni d'éléments coupants pour appareil désintégrateur
US20040188556A1 (en) * 2003-03-25 2004-09-30 Tom Jong Single cutter shredder
US20050116074A1 (en) * 2003-12-01 2005-06-02 Jiri Kusak Comminuter striker plate
WO2007125557A1 (fr) * 2006-05-03 2007-11-08 Tierre S.R.L. Nouvelle unite de couteau/broyage pour machines de broyage agricoles et industrielles
SE0700047L (sv) * 2007-01-12 2008-03-18 Iggesund Tools Ab Huggkniv samt förfarande för framställning av en huggkniv
US8857748B2 (en) * 2011-11-17 2014-10-14 Kennametal Inc. Grinding tool

Non-Patent Citations (1)

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Title
See references of WO2011006666A2 *

Also Published As

Publication number Publication date
US20120205473A1 (en) 2012-08-16
DE102009033584A1 (de) 2011-01-20
WO2011006666A2 (fr) 2011-01-20
WO2011006666A3 (fr) 2011-03-24

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