EP0126872A2 - Broyeur à marteaux - Google Patents

Broyeur à marteaux Download PDF

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Publication number
EP0126872A2
EP0126872A2 EP84102846A EP84102846A EP0126872A2 EP 0126872 A2 EP0126872 A2 EP 0126872A2 EP 84102846 A EP84102846 A EP 84102846A EP 84102846 A EP84102846 A EP 84102846A EP 0126872 A2 EP0126872 A2 EP 0126872A2
Authority
EP
European Patent Office
Prior art keywords
rotor
grinding track
hammer crusher
grinding
crusher 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.)
Withdrawn
Application number
EP84102846A
Other languages
German (de)
English (en)
Other versions
EP0126872A3 (fr
Inventor
Manfred Adolph
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.)
Lyndex Recycling Systems Ltd
Original Assignee
Lindemann Maschinenfabrik 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 Lindemann Maschinenfabrik GmbH filed Critical Lindemann Maschinenfabrik GmbH
Publication of EP0126872A2 publication Critical patent/EP0126872A2/fr
Publication of EP0126872A3 publication Critical patent/EP0126872A3/fr
Withdrawn legal-status Critical Current

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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
    • 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

Definitions

  • the invention relates to a hammer crusher with hammers mounted between support disks of a rotor and a grinding track.
  • Hammer crushers of this type are known and are used for coarse crushing, for example of metallic scrap and non-metallic materials by pressure and impact.
  • the shredding work is carried out by a rotor fitted with movable hammers, usually mounted on a horizontal shaft, with a grinding path curved in accordance with the hammer's impact circle and an anvil arranged in the area of a feed chute and anchored in the crusher housing parallel to the rotor axis.
  • Thick-walled support disks are arranged on the rotor shaft at a mutual distance from one another, on the periphery of which the hammers are freely rotatable between two disks.
  • the hammers Under the influence of the centrifugal force resulting from the rotor rotation, the hammers stretch radially outwards and thereby shred the feed material in the gap between the impact circle on the one hand and the anvil and the fixed grinding path on the other. Since the gap width is considerably smaller than the piece size of the feed material, there is an extraordinarily strong wear or abrasion of the grinding track in the area of the hammer tracks. Corresponding to the mutual distance of the hammers or hammer tracks caused by the thickness of the rotor disks, a wear pattern occurs on the grinding track in the area covered by the rotor hammers, which traces the distribution of the hammers along the rotor axis in an undulating manner.
  • the wave width and thus also the amount of the standing or not used grinding track material depends on the disk width, which is usually considerable in view of the large crushing forces.
  • the local wear in the area of the hammer tracks necessitates an exchange of the grinding track from time to time, although in the areas of the grinding track opposite the rotor disks there is still sufficient material per se to continue the grinding operation due to the much lower grinding action there.
  • German publication 24 06 204 describes a hammer crusher whose grinding track consists of individual wear plates lying next to one another and interlocking by means of cams and complementary recesses. In order to facilitate the replacement, hook-shaped fingers arranged on the outside of the wear plates engage in corresponding slots in a supporting wall of the crusher housing.
  • the invention is based on the object of controlling the grinding wall wear so that there is essentially the same abrasion across the width of the grinding track and the wear plates only have to be changed when their total thickness has just reached the permissible level.
  • the solution to this problem is based on the idea of bringing the grinding track regions or wave peaks opposite the rotor disks into the area of action of the rotor hammers when the wear plates would have to be replaced, in order in this way to practically restore the initial state with respect to the hammer tracks and to gain almost an additional full life of the wear plates.
  • the invention consists in that, in a hammer crusher of the type mentioned at the outset, the rotor and / or the grinding track are arranged horizontally displaceably relative to one another.
  • the grinding track wear takes place in at least two phases.
  • the first wear phase corresponds to the wear of a conventional hammer crusher, while after the rotor and / or the grinding path has been moved, when the grinding path wear in the wave troughs has reached the permitted level, the wave crests come to lie opposite the rotor hammers and are removed in a second wear phase until finally the waves are leveled and a change of grinding path is necessary due to the remaining, but essentially uniform, remaining thickness.
  • the displacement path of the rotor and / or grinding path can be different; however, it preferably corresponds to half or full distance of the center planes of the rotor hammers running at right angles to the rotor axis. In individual cases, the sum of the rotor and grinding path displacement always corresponds to the full distance between the center planes.
  • the time at which the grinding path is moved can be very different and depends in individual cases on the type of feed material and the wear pattern.
  • the only decisive factor here is that all areas of the slide track are finally exposed to the heavy wear caused by the rotor hammers, and in this way the service life of the grinding track is significantly extended. This not only leads to a lower material expenditure, but also increases the crusher performance considerably in that in comparison to conventional crusher every second grinding path change is omitted and instead only a little time-consuming shifting of the rotor and / or the grinding path is required.
  • the rotor and / or the grinding track can be moved in various ways, for example with the aid of a hydraulic cylinder.
  • the rotor bearings on their brackets are preferably fixed in elongated holes with the aid of detachable fastening screws.
  • the crusher housing can also have fixed inserts located opposite one another with an adjusting screw guided in a threaded bore parallel to the rotor axis and interacting with the grinding track. A sliding bar connected to the set screw can then engage in a recess in the grinding track.
  • the set screw can also be provided with a sliding piece, in the groove of which a bar connected to the grinding track engages.
  • the grinding track itself preferably consists of slabs of wear-resistant material which lie parallel to the rotor axis and are detachably connected to one another and can be displaced on a support base or with their ends on support blocks of the crusher housing.
  • the grinding track can also consist of a grating which can be displaced with its ends on a respective support bracket parallel to the rotor axis, preferably with openings offset relative to one another.
  • the shaft 4 of a rotor 5 is mounted in bearings 2, 3 in the housing 1 of the hammer crusher according to the invention.
  • the rotor consists of rotor disks 6 arranged on the shaft 4, between which hammers 7 which are pivotable peripherally in the vertical are arranged.
  • the outer surface of the rotor consists of protective shields 8, which only leave the hammers 7 and their swivel range open.
  • the crusher housing also has a feed chute 12, which is followed by an anvil 13. Between the anvil 13 and the vertical wall 14 delimiting the shaft 9, a grinding path 17 extends from individual self-supporting slabs 15 made of wear-resistant material and is curved in accordance with the impact circle 16 of the rotor hammers 7.
  • the slabs 15 of the grinding track 17 lie close to one another and their ends can be displaced in the direction of their longitudinal or rotor axis on lateral support stands 18, 19.
  • the curvature of the grinding track follows the impact circle 16 of the rotor hammers at a distance.
  • the grinding track is shown in the right part 20 with the wear grooves and in the left part 21 in the initial state; it lies below spacers 22, 23, which prevent contamination of the free space required for moving the grinding track 17 on the support stands 18, 19.
  • the crusher housing 1 has insert pieces 24 at opposite points, in whose threads 25 locking screws 26 are guided with lock nuts, the head 27 of which has radial blind bores 28 for inserting rods when the adjusting screws 26 are turned.
  • the adjusting screw on the left in FIG. 1 is unscrewed from the crusher housing in order to enable the grinding track 17 to be displaced when the right adjusting screw 26 is screwed into a left position.
  • the wear grooves or troughs come from the area of action of the hammers 7, so that the wave crests between the grooves are now opposite the rotor hammers 8 and are worn down to the level of the groove base in the course of further crusher operation . In this way, uniform or wear over the entire width of the grinding path can be achieved by moving the grinding path 17 one or more times.
  • the grinding track can also consist of a movable grating 29 which is also resting on support stands 18, 19.
  • the crusher housing on the other hand, has a support base 31 with wear plates 32 welded between two housing supports 60, the retaining fingers 33 of which engage in slots 34 of the support base 31. These slots are dimensioned such that they allow the wear plates 32 to be displaced on the support base 31 parallel to the rotor axis.
  • the grinding track can also be displaced using a displacement mechanism which is arranged on one side in contrast to the exemplary embodiment in FIG. 1. 5, likewise consists of an adjusting screw 25 guided in the thread of an insert 24 on the housing stand 30, but with a sliding bar mounted between a collar of the screw and a retaining nut 35 and engaging in a recess 36 of the grinding track 17 37, in the direction of which the adjusting screw 26 can rotate freely.
  • the grinding track 17 and the sliding bar 37 are shown in FIG. 5 both in their left end position 38 (solid line) and in their right end position 39 (dash-dotted lines). If the crusher, as shown in FIGS. 4 and 7, has a support base 31 supporting the grinding track 17, then a recess 40 in the support base 31 is required for the adjustment path of the sliding bar 37, the dimensions of which depend on the displacement path of the sliding bar 37.
  • a sliding piece 41 can also take the place of the sliding bar 37, in the groove of which a bar 43 arranged in a pocket 42 of the grinding track 17 engages. If the grinding track consists, as in this case, of a grating 29, then the two operating positions 38 and 39 should coincide in that the free passage surface of the grating 29 opposite the hammer tracks is essentially the same. This requirement is met in the grinding tracks shown in FIG. 8 as a development.
  • All grate openings 44, 45, 46, 47 lie with their longitudinal axes in the direction of the rotor axis; the grate openings 44, 45 ensure the same passage cross-section in both operating positions 38, 39, while the grate openings 46, 47 are extended by two pieces 48 each and the webs remaining between two adjacent grate openings 46, 47 to the barely sufficient for sufficient strength Dimension are reduced.
  • the outlines of the hammers 3 in both operating positions 38, 39 of the grating 29 are shown schematically in dash-dotted lines above the grating.
  • the upper row of hammer 49 corresponds to the left grinding track or grating position 38 and the lower row of hammer 50 corresponds to the right grinding track or grating position 39.
  • the grate openings 44, 45, 46, 47 are - seen in the direction of rotation of the rotor - arranged on a gap, so that adjacent grate openings 44, 45 and 46, 47 are assigned to different hammer groups or hammer tracks to oppose in case of a displacement of the grating 29 to avoid the hammers being stationary with regard to their orbits, a change in the free passage area
  • the grate openings 44, 46 result in one in both operating positions 38, 39 for the first, third, fifth, etc. same passage area, while the grate openings 45, 47 ensure this for the second, fourth, sixth etc. hammer 7.
  • the length of the grate openings 44, 45 in the direction of the rotor axis results from the projection of the hammer tracks in both operating positions 38, 39 corresponding to the hammer rows 49, 50, as illustrated by the two projection lines 51, 52, each representing an operating position.
  • the grate openings 46, 47 of the right grating illustration each extend a piece 48 beyond the respective projection lines 53, 54 and are correspondingly larger than the comparable grate openings 44, 45.
  • the terminal grate openings 47 A are only extended by a piece 48, since its right edge coincides with the right projection line of the outermost hammer path.

Landscapes

  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Crushing And Pulverization Processes (AREA)
EP84102846A 1983-05-31 1984-03-15 Broyeur à marteaux Withdrawn EP0126872A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19833319640 DE3319640A1 (de) 1983-05-31 1983-05-31 Hammerbrecher
DE3319640 1983-05-31

Publications (2)

Publication Number Publication Date
EP0126872A2 true EP0126872A2 (fr) 1984-12-05
EP0126872A3 EP0126872A3 (fr) 1986-11-26

Family

ID=6200277

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84102846A Withdrawn EP0126872A3 (fr) 1983-05-31 1984-03-15 Broyeur à marteaux

Country Status (3)

Country Link
EP (1) EP0126872A3 (fr)
DE (1) DE3319640A1 (fr)
ES (1) ES8501999A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008025322A2 (fr) 2006-09-01 2008-03-06 Albert Hoffmann Gmbh Blindage de paroi latérale pour revêtir une paroi latérale d'un déchiqueteur pour véhicules automobiles, déchiqueteur et rotor pour un déchiqueteur
EP2452553A1 (fr) * 2010-11-11 2012-05-16 Putsch GmbH & Co. KG Installation de machine pour le traitement de produits agricoles
CN103272667A (zh) * 2013-05-27 2013-09-04 玉林市玉博机械有限公司 一种饲料粉碎机机座

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3517579A1 (de) * 1985-05-15 1986-11-20 Thyssen Industrie Ag, 4300 Essen Ausbildung des gehaeusebodens von zerkleinerungsmaschinen
RU2687192C1 (ru) * 2018-08-06 2019-05-07 федеральное государственное бюджетное образовательное учреждение высшего образования "Ставропольский государственный аграрный университет" Измельчитель

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1523614A (en) * 1922-07-14 1925-01-20 Harry J Shelton Grinder and shredder
DE556938C (de) * 1927-08-27 1932-08-17 App De Manutention Et Fours St Mahlvorrichtung mit einer Mahlbahn, die durch einzelne auswechselbare Verschleissstuecke gebildet ist
US1927207A (en) * 1930-11-10 1933-09-19 American Pulverizer Pulverizing or crushing machine
DE589164C (de) * 1932-08-03 1933-12-06 Salvatore Arnavas Schlagmuehle
ZA717546B (en) * 1971-11-09 1972-12-27 V Acton Improvements in impact crushers
ZA717547B (en) * 1971-11-09 1972-12-27 V Acton Improvements in impact crushers
DE2406204C3 (de) * 1974-02-09 1986-07-10 Lindemann Maschinenfabrik GmbH, 4000 Düsseldorf Befestigung von auswechselbaren Schleißplatten an Gehäusewänden von Zerkleinerungsmaschinen
DD136928B1 (de) * 1978-06-13 1980-08-06 Hans Luhn Schlagmuehle mit waehrend des betriebes auswechselbaren sieben
DE3017437C2 (de) * 1980-05-07 1989-10-12 Lindemann Maschinenfabrik GmbH, 4000 Düsseldorf Schleißeinsatz für Hammerbrecher

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008025322A2 (fr) 2006-09-01 2008-03-06 Albert Hoffmann Gmbh Blindage de paroi latérale pour revêtir une paroi latérale d'un déchiqueteur pour véhicules automobiles, déchiqueteur et rotor pour un déchiqueteur
DE102007004585A1 (de) * 2006-09-01 2008-03-06 Albert Hoffmann Gmbh Seitenwandpanzerung zum Auskleiden einer Seitenwand eines Schredders für Kraftfahrzeuge, Schredder und Rotor für einen Schredder
WO2008025322A3 (fr) * 2006-09-01 2008-06-26 Albert Hoffmann Gmbh Blindage de paroi latérale pour revêtir une paroi latérale d'un déchiqueteur pour véhicules automobiles, déchiqueteur et rotor pour un déchiqueteur
EA014733B1 (ru) * 2006-09-01 2011-02-28 Альберт Хоффманн Гмбх Броневая защита для покрытия боковой стенки шредера для автомобилей, шредер и ротор для шредера
EP2295146A1 (fr) * 2006-09-01 2011-03-16 Albert Hoffmann GmbH Blindage de paroi latérale pour revêtir une paroi latérale d'un déchiqueteur pour véhicules automobiles, déchiqueteur et rotor pour un déchiqueteur
EP2452553A1 (fr) * 2010-11-11 2012-05-16 Putsch GmbH & Co. KG Installation de machine pour le traitement de produits agricoles
CN103272667A (zh) * 2013-05-27 2013-09-04 玉林市玉博机械有限公司 一种饲料粉碎机机座

Also Published As

Publication number Publication date
EP0126872A3 (fr) 1986-11-26
ES531890A0 (es) 1984-12-16
DE3319640A1 (de) 1984-12-06
ES8501999A1 (es) 1984-12-16

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Inventor name: ADOLPH, MANFRED