WO2007011316A2 - Broyeur a couteaux - Google Patents

Broyeur a couteaux Download PDF

Info

Publication number
WO2007011316A2
WO2007011316A2 PCT/SK2006/050002 SK2006050002W WO2007011316A2 WO 2007011316 A2 WO2007011316 A2 WO 2007011316A2 SK 2006050002 W SK2006050002 W SK 2006050002W WO 2007011316 A2 WO2007011316 A2 WO 2007011316A2
Authority
WO
WIPO (PCT)
Prior art keywords
knife
rotor
flat
mill
stator
Prior art date
Application number
PCT/SK2006/050002
Other languages
English (en)
Other versions
WO2007011316A3 (fr
Inventor
Milan DOCÁR
Original Assignee
Docar Milan
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 Docar Milan filed Critical Docar Milan
Publication of WO2007011316A2 publication Critical patent/WO2007011316A2/fr
Publication of WO2007011316A3 publication Critical patent/WO2007011316A3/fr

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
    • B02C18/16—Details
    • B02C18/18—Knives; Mountings thereof
    • B02C18/182—Disc-shaped knives
    • B02C18/184—Disc-shaped knives with peripherally arranged demountable cutting tips or elements
    • 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 is related to a knife mill for grinding one sort of metal or plastic material, mainly in form of samples, scrap material and scraps where the need is to provide exact output fraction of crushed material.
  • the most used materials for recycling are plastic materials, rubbers, paper, fabrics, cables, colour metals, etc.
  • Small knife mills implement homogenization and grinding with the help of sharp cutting knives.
  • the cutting edge is straight and in the process it makes right angle in the clockwise rotation. Knives are thin, the cutting section is generally inclined in the inclination of 15 angle degrees and the section is detrited in the inclination of 30 angle degrees.
  • the source of the cutting power is in this geometrical order the difference in the speed of material and cutting knives.
  • the speed of rotation is from 2000 up to 10 000 rt./min. and it is generally possible to set it up about 500 rt./min. It is also possible to set the time of grinding for 3 minute intervals, at which the mill can be movable.
  • the disadvantage of this machinery is low serviceable life of knives, low output suitable only for laboratory grinding of smaller pre-prepared pieces of material with low hardness and expensive operating.
  • stator box which is compounded of right angle welder.
  • Stator box is equipped by two oblique stator knives, from which one stator knife is stepped and fixed in the way, that its pit lays above splitting level in the equivalent distance to the height of the stator knife at which the stator knives include advantageously the angle 4 of angle degrees with rotor knives.
  • the disadvantage of this machine is that its construction is not suitable for grinding metal materials
  • the box of the mill has input shaft in the lower part equipped with long longitudinal stator knife under which in the box is a rotary stepped cylindrical rotor with more radial niches sequenced consecutively in more rows on the rotor perimeter to the stator knife what enables fluent retractoring of scraps to the mill with limited movement while grinding.
  • the grinding is realized by water or dry method.
  • the disadvantage of this machiney is low serviceable life of knives, suitability of material grinding is only with low hardness and expensive operation.
  • Well known are also heavy knife mills which have a hopper, a box and also a spout tightly secured against a release and opening with safe mechanic-electric system with decoding controlling relay.
  • the rotor and statory knives can be made of some segments behind each other.
  • the disadvantage of these kinds of machines is having quite fast wear-off mainly of cutting edges input part of rotor knives by impacts against the surface of a thick material at grinding where their thickness is weakened by regrinding, by which the life is substantially lowered and the expenses for their aligning and service still increase.
  • Unequal deterioration of the whole pit causes fast, mainly at aluminium leaking and sticking of a cut material, or in some cases exchange of cutting pits and using economically demanding pre-arranging machine.
  • cylindrical sieve is situated under the hopper and at least two thin flat stator knives of tetragonal cross section fixed in a holder in diagonal way above which there is rotor rotationally stepped with a pair of two thin rotor knives with tetragonal cross section with sharp edges fixed in a radial spout in the way that the exserted pits of stator knives freely interlock to the corresponding mirror depressions of rotor knives, where stator and rotor knives are mostly made of cemented carbide.
  • Stator knives are stepped next to each other in straight and diagonal way exactly with the axis of rotor, rotor knives are stepped next to each other either parallely or obliquely or spirally.
  • the disadvantage of this machine is that at grinding immediate point of grinding material connection comes up with their thin pits of stator and rotor knives by which there is quite fast wear-off of fragile but hard thin material mainly at exserting sharp cutting edges of stator and rotor knives by impacts against the surface of a thick grinded material. This is the reason why the knife life is extremely decreased and the expenses increase for aligning and also for service of this mill. Following, the mill has also small area of cutting tools and low rotor rotations and therefore it has low productivity of grinding. Unequal wear-off of the whole top of the knife pits is caused so quickly mainly because of aluminium leaking and sticking of a cut material in cutting knives what demands either often exchange of cutting pits or use of economically demanding pre-arranging machine.
  • the basic of the invention is that in the body under the hopper is fixed in the holder at least one flat stator knife and cylindrical sieve, above which there is fixed rottationaly rotor with at least one radial claw on which is a mirror shape flat rotor knife of a flat stator knife.
  • the flat stator knife is stepped with the inclination from the horizontal position in the direction of rotor rotation in the angle ⁇ and in the range from 1 to 15 angle degrees and the flat rotor knife is stepped in the front with the inclination from the radial position counterclockwise of the rotor rotation in the angle ⁇ in the range from 1 to 15 angle degrees.
  • the flat rotor knife has bevelled cutting edge from the tangent in the centre of cutting edge from both sidesin the angle ⁇ and ⁇ ' in the range from 1 to 30 angle degrees and if there are at the same opposite each other oriented angles ⁇ and ⁇ ' two-side believed the flat rotor knife ' s cutting edge from the tangent in the centre of the cutting edge.
  • the advantage is also if the flat stator knife compounded from at least two segments fixed next to each other in the holder and/or if the flat rotor knife compounded from at least one segment.
  • the biggest advantage of the knife mill is according to the invention is that for milling are used thick tough flat stator knives from which all four edges by appropriate fixation in the holder slope of the stator knives and in radial claws of rotor create cutting edges without the need of bevelling and weakening the surface.
  • the exchange of cutting edges is very simple and not demanding on time.
  • a big angle on the pits of knives expressively increases their serviceable life, decreases expenses on aligning and gives the suitability of the machine for a high output appropriate not only for big unprepared pieces of material for laboratory purposes with high hardness but also for current low expensive operating grinding - crushing metal materials in the form of waste materials, for examples scraps.
  • the knife mill operates with minimal impacts of grinded material against the edge of cutting knives and it has relatively equal wear-off of the whole pit of a knife, does not appear at it, mainly at alluminium leaking and sticking of grinded material in the centre among cutting knives, what shortens mending time and replacement of cutting knives, at which this machine does not demand the use of economically expensive pre-prepared machine while grinding, but it is suitable also for this purpose.
  • the knife mill is according to the invention compared to mentioned machines in the present status operates with substantially higher rotations of the rotor and it has substantially higher productivity of processed material crushing by which it is suitable for machines capable to processed operating links.
  • a knife mill according to the invention is shown in attached drawings where in the Fig. 1 is schematically depicted knife mill with one flat stator knife and four rotor knives, in the Fig. 2 is schematically depicted the beginning of an adjacent segment stator knives pair cut and segment of the rotor knife, the Fig. 3 schematically shows the depiction of the cut ending of adjacent segment stator knife and segment rotor knive pairs, the Fig. 4 schematically shows the flat rotor knife with cutting sharp knife with two cutting sharp pits, the Fig. 5 schematically shows the flat rotor knife with two cutting sharp pits, the Fig. 6 schematically shows the flat rotor knife with a pit of the cutting edge with radius and the Fig. 7 schematically showsflat rotor knifewith curved cutting edge.
  • the knife mill is according to the invention shown in the Fig. 1 compounded of a body 1. with a hopper 2, a holder 3, a stator knife 4, a rotor 5 with radial claws 6, a rotor knife 7 and a cylindrical sieve 8. Above the cylindrical sieve 8 is in the body 1_ stepped flat stator knife 4 fixed in the holder 3. Further above the cylindrical sieve 8 under the hopper 2 is rotationally stepped rotor 5 with four flat rotor knives 7 fixed on radial claws 6 with two-side bevelled cutting edges from the tangent in the middle of the cutting edge under the hopper in the angle ⁇ and ⁇ ' at the value of 15 angle degrees.
  • the flat stator knife 4 is next stepped with the inclination form the horizontal position in the way of the rotor 5 rotation in the anlge ⁇ at the value of 8 angle degrees and the flat rotor knife 7 is stepped in the front with the inclination from radial position with the inclination counterclockwise of the rotor 5 rotation in the angle ⁇ at the value of 6 angle degrees.
  • the angles ⁇ and ⁇ ' oriented opposite each other which have two-side bevelled the cutting edge of the flat rotor knife 7 as well of the stator flat knife 4 are two-side symetric and make up right angle in the middle of the cutting edge (see Fig. 4).
  • the flat stator knife 4 has a mirror shape flat rotor knife 7 and it is compounded from two segments fixed in the holder 3 and flat rotor knife 7 is composited by only one segment fixed on the radial claw 6 of rotor 5 (see Fig. 2, Fig. 3) and the segments of the flat rotor knife 7 are located parallelly towards the axis of rotor 5.
  • the material is set for grinding, e.g.: colour metal scraps, etc, either in doses or it is fluently forwarded to the hopper 2 of the rotor mill while rotor 5 rotating and subsequently it falls to the hopper 2 by gravitation on the surface of the rotor 5 rotation to the rotor knives 7, which fluently with their cutting edge in the counterclockwise cutting edge of the stator knife 4 from time to from fluently cut from the pit of the rotor knife 7 (see Fig. 2) up to the pits of the stator knife 4 (see Fig. 3).
  • the material is set for grinding, e.g.: colour metal scraps, etc, either in doses or it is fluently forwarded to the hopper 2 of the rotor mill while rotor 5 rotating and subsequently it falls to the hopper 2 by gravitation on the surface of the rotor 5 rotation to the rotor knives 7, which fluently with their cutting edge in the counterclockwise cutting edge of the stator knife 4 from time to from fluently cut from the
  • the cut-off material then falls down and it is subsequently pressed by rotor knives 7 along the internal side of the cylindrical sieve 8 to not shown general transporting container - pallette or to the hopper of a suitable transporting equipment. Bigger clips of a material than the holes in the cylindrical sieve 8 are at the same time transferred by rotor knives 7 along the internal side of the cylindrical sieve 8 into the hopper 2 of the body 1. of the knife mill where they are mixed and the re-filled material set for grinding at which the described operation cycle still repeats at known clips offtaking under the cylindrical sieve 8 until the whole material is completely grinded.
  • the knife mill is not the only possible according to the invention, to what extent, it can consist two or more flat stator knives fixed in a self-standing holders, the rotor can consist 1 , 2, 3 or more than 4 flat rotor knives fixed on the radial claws, two-side bevelled cutting edges from the tangent, in the middle of the cutting edge they can be made in the angle ⁇ and ⁇ ' in the range form 1 to 30 angle degrees, at which ⁇ and ⁇ ' can be different from each other.
  • the flat stator knife can be stepped with the inclination from the horizontal position in the rotor rotation direction in the angle ⁇ in the range from 1 to 15 angle degrees and flat rotor knife can be stepped with the inclination from the radial position of the opposite the rotor rotation direction in the angle ⁇ in the range from 1 to 15 angle degrees.
  • One or more pits of the rotor knife cutting edge can be ended by radius or at least part of the cutting edge of the flat rotor knife can have the shape of radius.
  • the flat stator knife can also be compounded from 1 or 2 pieces and more segments stepped in the holder next to each other and flad rotor knife can be stepped from 1 or 2 and more segments fixated parallel on the radial claw of the rotor. Segments of the flat rotor knife can be oblique or spiral or arrowy or rounded to the axis of the rotor.
  • Knife mill wherein the invention can be used in the industry for adjustment of scrap and waste material, mainly of colour and iron metal in the metalurgy, for laboratory crushing or pre-granulation of hard samples in the metalografi, for crushing plastics, tyres, leather, rubber, paper, waste wood and also as pre-granulator of wood matters at the production of woo chip board, etc.
  • scrap and waste material mainly of colour and iron metal in the metalurgy
  • laboratory crushing or pre-granulation of hard samples in the metalografi for crushing plastics, tyres, leather, rubber, paper, waste wood and also as pre-granulator of wood matters at the production of woo chip board, etc.

Landscapes

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

Abstract

Broyeur à couteaux pour le broyage d'un type de matériau en métal ou en plastique, essentiellement sous la forme d'échantillons, de matériau de rebut et de rebuts, dans les cas où il est nécessaire de fournir une fraction précise de matériau broyé. Le dispositif comprend un corps (1) avec une trémie (2), un support (3), un couteau stator (4), un rotor (5) à mâchoires radiales (6), un couteau rotor (7) et un tamis cylindrique (8). Dans le corps (1) sous la trémie (2) se trouve à l'intérieur du support (3) au moins un couteau stator plat (4) et un tamis cylindrique (8) au-dessus duquel se trouve un rotor à rotation fixe (5) avec au moins une mâchoire radiale (6) sur laquelle se trouve un couteau rotor plat en forme de miroir (7) de couteau stator plat (4), lequel est décalé par rapport à l'horizontale dans la direction de rotation du rotor (5) selon l'angle a compris entre et 15 degrés, et le couteau rotor plat (7) est décalé à l'avant avec une inclinaison par rapport à la position radiale dans le sens inverse de la rotation du rotor (5) selon l'angle ß compris entre 1 et 15 degrés.
PCT/SK2006/050002 2005-07-15 2006-07-06 Broyeur a couteaux WO2007011316A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SK85-2005A SK852005A3 (sk) 2005-07-15 2005-07-15 Nožový mlyn
SKSKPP0085-2005 2005-07-15

Publications (2)

Publication Number Publication Date
WO2007011316A2 true WO2007011316A2 (fr) 2007-01-25
WO2007011316A3 WO2007011316A3 (fr) 2007-12-13

Family

ID=37669262

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SK2006/050002 WO2007011316A2 (fr) 2005-07-15 2006-07-06 Broyeur a couteaux

Country Status (3)

Country Link
CZ (1) CZ200882A3 (fr)
SK (1) SK852005A3 (fr)
WO (1) WO2007011316A2 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITUD20100220A1 (it) * 2010-11-29 2012-05-30 Alessandro Foffani Coltello per un dispositivo di frantumazione e vagliatura del terreno di una benna, di un vaglio fisso od altro, dispositivo di frantumazione e vagliatura del terreno e relativa benna o vaglio fisso
CN102716791A (zh) * 2012-07-12 2012-10-10 天津赛象科技股份有限公司 橡胶胶块切碎机

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2423263A1 (fr) * 1978-04-17 1979-11-16 Sosson Guy Machine a broyer rotative a couteaux, notamment pour la recuperation des metaux tenaces
DE20314764U1 (de) * 2003-09-22 2003-12-11 Plahuta, Igor Zerkleinerer

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2423263A1 (fr) * 1978-04-17 1979-11-16 Sosson Guy Machine a broyer rotative a couteaux, notamment pour la recuperation des metaux tenaces
DE20314764U1 (de) * 2003-09-22 2003-12-11 Plahuta, Igor Zerkleinerer

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITUD20100220A1 (it) * 2010-11-29 2012-05-30 Alessandro Foffani Coltello per un dispositivo di frantumazione e vagliatura del terreno di una benna, di un vaglio fisso od altro, dispositivo di frantumazione e vagliatura del terreno e relativa benna o vaglio fisso
EP2458096A1 (fr) * 2010-11-29 2012-05-30 Alessandro Foffani Appareil pour broyer et cribler du sol pour une pelle d'excavatrice ou un crible fixe, et un godet ou un crible comprenant cet appareil
CN102716791A (zh) * 2012-07-12 2012-10-10 天津赛象科技股份有限公司 橡胶胶块切碎机

Also Published As

Publication number Publication date
WO2007011316A3 (fr) 2007-12-13
SK852005A3 (sk) 2007-02-01
CZ200882A3 (cs) 2008-04-02

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