EP2851123B1 - Grille de concasseur à marteaux - Google Patents

Grille de concasseur à marteaux Download PDF

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Publication number
EP2851123B1
EP2851123B1 EP13185324.4A EP13185324A EP2851123B1 EP 2851123 B1 EP2851123 B1 EP 2851123B1 EP 13185324 A EP13185324 A EP 13185324A EP 2851123 B1 EP2851123 B1 EP 2851123B1
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EP
European Patent Office
Prior art keywords
hammer crusher
grate
crusher grate
hammer
grate according
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.)
Active
Application number
EP13185324.4A
Other languages
German (de)
English (en)
Other versions
EP2851123A1 (fr
Inventor
Martin Hassler
Thomas Retzmann
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.)
Metso Outotec Germany GmbH
Original Assignee
Metso Germany 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 Metso Germany GmbH filed Critical Metso Germany GmbH
Priority to EP13185324.4A priority Critical patent/EP2851123B1/fr
Priority to PCT/EP2014/067923 priority patent/WO2015039836A1/fr
Publication of EP2851123A1 publication Critical patent/EP2851123A1/fr
Application granted granted Critical
Publication of EP2851123B1 publication Critical patent/EP2851123B1/fr
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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
    • B02C13/00—Disintegrating by mills having rotary beater elements ; Hammer mills
    • B02C13/26—Details
    • B02C13/282—Shape or inner surface of mill-housings
    • B02C13/284—Built-in screens

Definitions

  • the invention relates to a hammer crusher grate.
  • a hammer crusher grate is part of a hammer crusher, also called a hammer mill, that is to say a comminution machine which is used, for example, for industrial raw material preparation, but also for comminuting valuable materials (residual materials).
  • the central element of such a hammer crusher is a rotor with a horizontally arranged shaft and rotating shredding tools (hammers) that act on the material to be shredded. Their crushing effect is primarily based on the impact and impact loads on the feed material by the hammers articulated on the rotor.
  • a hammer crusher is for example from the US 6,371,393 B1 known.
  • Hammer crushers can have one or more rotors, which are usually arranged centrally in the crusher workspace.
  • the explanations below relate to a single-shaft hammer crusher (according to US 6,371,393 B1 ), can also be transferred analogously to hammer crusher with several rotors.
  • the top grate which runs at a distance above the rotor, has essentially the shape of a cuboid.
  • the WO 90/00933 A1 shows a hammer crusher in which a top grate is slidably arranged by means of a piston / cylinder unit. From the WO 2010/103241 A1 a foldable grate is known for a hammer mill.
  • the FR 2382269 A shows a top grate for a hammer mill, which can be slid into the desired position.
  • the EP 0 624 445 A1 describes a hammer mill with top grate, which lies on a frame.
  • the top grate thus has a rectangular shape and is characterized by two outer long sides and two outer broad sides.
  • This growth can also cause the upper grate to jam on the upper part, which is undesirable.
  • the described material property of manganese hard steel also has the disadvantage that mechanical stresses are induced in the grate by the growth of the material if the grate is arranged within a fixed receptacle or in particular if the grate itself is fixed in place.
  • the invention is based on the following considerations: The disadvantages of known grates described above can be avoided if the grate is stored specifically in or on the housing of the associated hammer mill.
  • the expansion behavior and in particular the direction of the expansion would be largely uncontrollable.
  • the grate could rotate around the fixed bearing in the grate plane, which is undesirable.
  • the invention therefore proposes an embodiment which, in addition to the fixed bearing mentioned, provides at least one floating bearing which allows the grate to move in one direction of the coordinate system, but reliably prevents undesired rotation of the grate in the hammer mill.
  • the position (orientation) of the grate is completely preserved within technical tolerances. It is only necessary to ensure that there is enough space parallel to the long and / or wide sides so that the grate can grow into these rooms without running into stops or counter bearings.
  • the top grate comprises a third device, which forms part of a second floating bearing, along which the hammer breaker grate can be guided on the housing of the hammer breaker in a direction that is perpendicular to the direction of movement that the second device enables.
  • the hammer crusher grate is secured and positioned via two or three bearings in the hammer crusher housing.
  • the fixed bearing serves as a safeguard against unintentional loosening.
  • the fixed bearing prevents, for example, that the grate is inadvertently moved (raised) when the machine is opened, or that the grate rotates in the storage level.
  • the floating bearing or bearings have the task of ensuring that the grate grows tension-free in two mutually perpendicular directions within the main surface of the grate.
  • the fixed bearing does not necessarily have to be free of play. Rather, for example to facilitate the assembly of the grate, it will allow a certain amount of play within the usual tolerances, for example a movement of a maximum of 10 mm in each direction of the coordinate system, alternatively a maximum of 7 mm, a maximum of 5 mm or a maximum of 3 mm.
  • At least one of these devices can be arranged along an outer long side or outer broad side. This embodiment is also preferred, although not absolutely necessary, because one or more devices could in principle also be provided, for example, in the middle of the grate.
  • the first device is arranged in the end region of a broad side or in the end region of a long side, for example in the corner region between a broad side and a corresponding long side.
  • the second device or the third device are preferably arranged at a distance from the first device, in particular when the length of the linear mobility of the grate made possible by the device is limited.
  • the mentioned distance from the first device should correspond, for example, to at least half the maximum extent of the corresponding broad side or long side. This also corresponds to the following description of the figures.
  • the facilities can be designed differently. In principle, the devices must cooperate with corresponding devices, which are provided in particular on the housing of the hammer mill.
  • part of the facility is a so-called “male part” (English: “male part”) and the corresponding part is a “female part” (English: “female part”).
  • the first device consists of a hole or a pin. If the grate is designed with a hole, an associated pin is provided on the housing, which engages in the hole so that both take over the fixed bearing function in cooperation.
  • hole / pin includes screw / thread connections, in particular also those with a "head” in order to secure the grate in the vertical direction.
  • the second device, the third device or the second and the third device can analogously consist of a longitudinal hole or a pin.
  • the elongated hole has the desired orientation in which the grate should be "movable", the position of the pin shifting analogously within the elongated hole during the movement process.
  • the longitudinal hole preferably has a minimum length in the longitudinal direction should correspond to the maximum expected expansion of the hammer crusher grate in this longitudinal direction under operating conditions.
  • the typical maximum elongation is three to four vol.%. With an extension of one long side of the grate of 3,000 mm, this corresponds to a longitudinal hole with a minimum length between 90 and 120 mm. Of course, the longitudinal hole can also have a greater length; to this extent, only the maximum extension of the corresponding long side or broad side gives a constructive limit.
  • the floating bearings in the area of the second and third device merely have a “guiding function” in order to ensure the stress-free expansion of the rust material in the corresponding direction.
  • the machine consists of three parts, a lower part H1, a middle part H2 and an upper part H3.
  • the upper part H3 can be pivoted about a joint G in the direction of arrow P.
  • a top grate 10 of the system is accessible, the details of which can be found in the Figures 2 to 4 result and are explained in more detail below.
  • a rotor R with (not shown) vibrating hammers can be seen, that is to say the comminution unit.
  • a feed opening Z for the material to be shredded, here: automobile bodies, can be seen to the right above the rotor R.
  • the invention relates in principle only to large industrial plants or their parts.
  • the top grate 10 has an approximate cuboid shape. In the supervision there is a rectangle.
  • the grate accordingly has two outer long sides L1, L2 and two outer broad sides B1, B2, which frame a grid-like grate structure, which in turn is perpendicular to one another extending webs 12, 14, the grid openings 16 limit.
  • the webs 12 run at an angle of 20 ° to the Z direction.
  • the sheets L1.1, L1.2 are each provided with a circular hole 18.1, 18.2.
  • the holes 18.1, 18.2 are vertically aligned with one another. They form a first device E1, which forms part of a fixed bearing, with which the hammer crusher grate 10 can be fastened to a housing GH of the hammer crusher, like that Figures 4a to c show and will be explained in more detail below.
  • elongated holes 20.1, 20.2 are arranged in the sheets L1.1, L1.2, in a manner that is vertically aligned with one another, analogously to the holes 18.1, 18.2.
  • the longitudinal extension of the elongated holes 20.1, 20.2 runs in the Y direction.
  • the elongated holes 20.1, 20.2 form a second device E2 as part of a first floating bearing.
  • the elongated holes 22.1, 22.2 also form a third device as part of a second floating bearing. They are vertically aligned with one another, but they have their greatest extent in the X direction, as in particular Figure 3 shows.
  • the Figures 4a to c show the top grate 10 in the installed state.
  • hole 18.2 is fastened to the housing GH of the hammer crusher by means of a screw SC (shown only symbolically). Hole 18.2 and screw SC accordingly form the fixed bearing for fastening the top grate 10 within the hammer crusher.
  • a pin ST1 extends from the housing GH through the elongated hole 20.2 upwards ( Figure 4c ), so that slot 20.2 and pin ST1 together form a first floating bearing.
  • This floating bearing allows the top grate 10 to move in the Y direction independently of the fixed bearing 18.2 / SC.
  • An analogous pin arrangement ST2 results in the area of the elongated hole 22.2, the pin ST2 and elongated hole 22.2 allowing the top grate 10 to move in the X direction on the housing GH due to the alignment described.
  • the fixed bearing consisting of screw SC and hole 18.2 ensures that the top grate 10 remains unchanged in its functional position, even if the top part H3 of the system is opened around the joint G.
  • the floating bearings (20.2, ST1; 22.2, ST2) ensure that expansions of the material (mangnesite hard steel) of the top grate 10 can be compensated for under impact stress by moving the grate along the elongated holes 20.2, 22.2.
  • the pins ST1, 2 or the screw SC can through the corresponding holes 18.1, 18.2; 20.1, 20.2, 22.1, 22.2 be led through; otherwise the holes 18.1, 20.1, 22.1 also serve for easier assembly.

Landscapes

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

Claims (12)

  1. Grille de concasseur à marteaux avec les caractéristiques suivantes :
    a) une forme rectangulaire dans une vue du dessus,
    b) deux côtés longitudinaux (L1, L2) extérieurs et deux côtés larges (B1, B2) extérieurs,
    c) un premier appareil (E1), qui forme une partie d'un palier fixe, avec lequel la grille de concasseur à marteaux peut être fixée au niveau d'un boîtier (GH) d'un concasseur à marteaux associé,
    d) un deuxième appareil (E2), qui forme une partie d'un premier palier lâche, le long duquel la grille de concasseur à marteaux peut être guidée de manière mobile au niveau du boîtier (GH) du concasseur à marteaux en direction des côtés longitudinaux (L1, L2) ou des côtés larges (B1, B2).
  2. Grille de concasseur à marteaux selon la revendication 1, avec un troisième appareil (E3), qui forme une partie d'un deuxième palier lâche, le long duquel la grille de concasseur à marteaux peut être guidée de manière mobile au niveau du boîtier (GH) du concasseur à marteaux dans une direction de manière perpendiculaire par rapport à la direction de déplacement du premier palier lâche.
  3. Grille de concasseur à marteaux selon la revendication 1 ou 2, où au moins un appareil (E1, E2, E3) est disposé le long d'un côté longitudinal (L1, L2) extérieur ou d'un côté large (B1, B2) extérieur.
  4. Grille de concasseur à marteaux selon la revendication 1 ou 2, où l'ensemble des appareils (E1, E2, E3) est disposé le long des côtés longitudinaux (L1, L2) et des côtés larges (B1, B2) extérieurs.
  5. Grille de concasseur à marteaux selon la revendication 1 ou 2, où l'ensemble des trois appareils (E1, E2, E3) est disposé le long des côtés longitudinaux (L1, L2) ou des côtés larges (B1, B2) extérieurs.
  6. Grille de concasseur à marteaux selon la revendication 1, où le premier appareil (E1) est disposé dans la zone d'extrémité d'un côté large (B1, B2) ou dans la zone d'extrémité d'un côté longitudinal (L1, L2).
  7. Grille de concasseur à marteaux selon la revendication 1, où le premier appareil (E1) est disposé dans la zone de coin (L2-B1 ; B1-L1 ; L1-B2 ; B2-L2) d'un côté large (B1, B2) avec un côté longitudinal (L1, L2) correspondant.
  8. Grille de concasseur à marteaux selon la revendication 1 ou 2, où le deuxième appareil (E2) et/ou le troisième appareil (E3) sont disposés à une distance par rapport au premier appareil (E1), qui correspond au moins à la moitié de l'extension maximale (EB, EL) du côté large (B1, B2) ou du côté longitudinal (L1, L2) correspondant.
  9. Grille de concasseur à marteaux selon la revendication 1, où le premier appareil (E1) est constitué d'un trou (18.1, 18.2) ou d'une tige.
  10. Grille de concasseur à marteaux selon la revendication 1, où le deuxième appareil (E2), le troisième appareil (E3) ou le deuxième et le troisième appareil (E2, E3) sont constitués d'un trou oblong (20.1, 20.2 ; 22.1) ou d'une tige.
  11. Grille de concasseur à marteaux selon la revendication 10, où le trou oblong (20.1, 20.2 ; 22.1) présente dans la direction longitudinale une longueur minimale, qui correspond à l'allongement maximal attendu de la grille de concasseur à marteaux dans ladite direction longitudinale dans des conditions de fonctionnement.
  12. Grille de concasseur à marteaux selon la revendication 1 composée d'une fonte à base de manganèse.
EP13185324.4A 2013-09-20 2013-09-20 Grille de concasseur à marteaux Active EP2851123B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP13185324.4A EP2851123B1 (fr) 2013-09-20 2013-09-20 Grille de concasseur à marteaux
PCT/EP2014/067923 WO2015039836A1 (fr) 2013-09-20 2014-08-22 Grille de concasseur à marteaux

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP13185324.4A EP2851123B1 (fr) 2013-09-20 2013-09-20 Grille de concasseur à marteaux

Publications (2)

Publication Number Publication Date
EP2851123A1 EP2851123A1 (fr) 2015-03-25
EP2851123B1 true EP2851123B1 (fr) 2020-04-01

Family

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Application Number Title Priority Date Filing Date
EP13185324.4A Active EP2851123B1 (fr) 2013-09-20 2013-09-20 Grille de concasseur à marteaux

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EP (1) EP2851123B1 (fr)
WO (1) WO2015039836A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108405123A (zh) * 2018-02-07 2018-08-17 常成友 用于建筑施工的设备

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2382269A1 (fr) * 1977-03-03 1978-09-29 Fouquet Dany Broyeur perfectionne pour cereales
FR2634400B1 (fr) * 1988-07-19 1991-12-06 Becker Arnaud Broyeur a marteaux pour le dechiquetage d'objets metalliques muni d'un dispositif de protection du tambour d'entrainement des marteaux
DE9307222U1 (de) * 1993-05-12 1993-09-23 Bauer Manfred Schredder
DE19712587C2 (de) 1997-03-26 2001-11-15 Svedala Lindemann Gmbh Gehäuse für eine Zerkleinerungsmaschine
FR2942975B1 (fr) * 2009-03-12 2011-05-20 Arnaud Becker Dispositif de compactage et de cisaillage prealable de produits a broyer
ES2453378T3 (es) * 2010-11-26 2014-04-07 Metso Lindemann Gmbh Enrejado para triturador de martillos

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
EP2851123A1 (fr) 2015-03-25
WO2015039836A1 (fr) 2015-03-26

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