EP0795352B1 - Hammermühle zur Zerkleinerung von Blech o.a. Material - Google Patents

Hammermühle zur Zerkleinerung von Blech o.a. Material Download PDF

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Publication number
EP0795352B1
EP0795352B1 EP97103686A EP97103686A EP0795352B1 EP 0795352 B1 EP0795352 B1 EP 0795352B1 EP 97103686 A EP97103686 A EP 97103686A EP 97103686 A EP97103686 A EP 97103686A EP 0795352 B1 EP0795352 B1 EP 0795352B1
Authority
EP
European Patent Office
Prior art keywords
openings
swing
hammer crusher
plates
striking tool
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.)
Expired - Lifetime
Application number
EP97103686A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0795352A1 (de
Inventor
Erhard Hoof
Frank Hoof
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.)
Albert Hoffmann GmbH
Original Assignee
Albert Hoffmann 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 Albert Hoffmann GmbH filed Critical Albert Hoffmann GmbH
Publication of EP0795352A1 publication Critical patent/EP0795352A1/de
Application granted granted Critical
Publication of EP0795352B1 publication Critical patent/EP0795352B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • B02C13/282—Shape or inner surface of mill-housings
    • B02C13/284—Built-in screens

Definitions

  • the invention relates to a hammer mill for crushing sheet metal and similar material with a striking tool that is rotatable about an axis, and apertured grids or depressions Wear plates.
  • Such devices are u. a. suitable for shredding car scrap.
  • the material is over a slope into the shredder and then between smash the striking tool and the grates or wear plates and shredded.
  • the material is then opened through openings in the grates is removed from the mill.
  • Hammer mills are therefore not cutting devices. While at Cutters such as US-A-5150844 between one Cutting bar and edges of openings a shearing process takes place in which the material to be treated is cut, at Hammer mills first the material at the entrance of the hammer mill shredded and then compacted inside the hammer mill. Cutting processes between the hammer and the wear plate are included Hammer mills are neither intended nor desired because of the use of Hammer mills aiming for a high density of particles.
  • Wear plates are used for such mills, separating, sorting and Processing plants used. They are either cast or consist of rolled sheets.
  • Dismantling can very often be due to a Wedges of the panels or grates in the system can only be done by extensive disassembly using a welding torch. This usually leads to complete destruction the grates or wear plates.
  • the invention is therefore based on the object, a hammer mill of the beginning described type in such a way that the elongation of the grate or Wear plates are reduced during their use.
  • the invention is based on the finding that the strong elongation of Wear plates or rusting depends on the plate geometry and one special shape of the openings or depressions reduces the elongation. Since the Course of the webs located between the openings or depressions According to the invention deviates from a straight line, the webs are elongated not necessarily to an elongation of the wear plate, but can also Deformations within the grate or wear plate that do not result affect the dimensions of the grate or wear plate.
  • the openings in an edge area are pentagonal and have the same area as in a central area.
  • the pentagonal opening shape in the edge area allows a straight Edge closure of the wear plate or grate and allows openings form the hexagonal openings in the middle area correspond.
  • openings or Wells are staggered and round. Also round Openings offer casting technology and in relation to the elongation properties of the Wear plate or the grate similar advantages as hexagonal openings and are therefore proposed as an alternative embodiment.
  • the Openings in an edge area have a straight side. This will achieved that openings up to the edge of the grate or wear plate are provided, and these openings are to be designed so that the Openings in the edge area have the same passage area as that Openings in the middle of the grate or wear plate.
  • An advantageous embodiment provides that the grates transverse to the axis of the Striking tool are arranged. Since the course of the webs according to the invention such an arrangement will reduce the elongation of the plates or grids possible.
  • the grids in a direction transverse to the axis of the Impact tool have smaller openings.
  • Such Reduction of the openings leads to a different grinding behavior and In particular on ceiling grates of hammer mills, such Design of the openings a falling back of crushed material in the Prevent area of working striking tools.
  • the structure of the hammer mill 1 shown in FIG. 1 is known. Of the Left side 2 motor vehicles 3 slide into the rotor space 4 via a ramp. In this rotor space 4 there is a striking tool 5 which is on an axis 6 is rotatably mounted. The striking tool 5 moves in the direction of the Arrows 7 and shreds the motor vehicle 3. The resulting parts 8 are in Crush the rotor space between the striking tool 5 and grate 9.
  • the grates 9 have openings 10, at the edges of which the parts 8 are crushed and through which the parts 8, if they are small enough, emerge from the rotor space 4.
  • the leaked parts 8 then fall onto a chute 11 on which they come out of the Hammer mill get out on a conveyor belt 12.
  • the grids 9 are arranged in a semicircle around the striking tool. At the bottom Area are floor grates. Towards the striking tool 5 Floor grating is then an ejection door 13, which is at Can open explosions, and this is followed by a ceiling grate 14.
  • Hood 15 is provided, which the parts passing through the grids 8 on the Chute 11 directs.
  • the floor grates are in the hammer mill according to Figure 1 transverse to the axis 6 of Impact tool 5 arranged and an elongation of the floor gratings thus presses not on the side cover 16 of the hood 15.
  • Figure 2a shows the conventional Formation of the grates, in which in the longitudinal direction 17 and in the transverse direction 18 Grids 9 webs 19 and 20 are arranged. These bridges have a longer effect Use of the grids an expansion of the grate in the direction of arrows 17 or 18th
  • a grate according to Figure 2b in which the webs both in Do not form a continuous line in the longitudinal direction 21 or in the transverse direction 22.
  • Such a grate design can be used for the ceiling grate and the ejection door Floor grate can be used.
  • the figure shows a section of a floor grate 2c in plan view and FIG. 2d as a perspective view.
  • FIGS. 2e and f show further embodiments, wherein in Figure 2e the webs 23 are arranged diagonally to the plate and thus both in the longitudinal direction 24 and in the transverse direction 25 of the plate Form a zigzag line.
  • Fig. 2f shows schematically the use of pentagonal openings 10, which can also be arranged so that a zigzag line either lengthways or crossways to the plate arises.
  • FIG. 2g shows a grating with hexagonal cross-sections to the rotor axis Openings.

Landscapes

  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Crushing And Pulverization Processes (AREA)
  • Crushing And Grinding (AREA)
EP97103686A 1996-03-11 1997-03-06 Hammermühle zur Zerkleinerung von Blech o.a. Material Expired - Lifetime EP0795352B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19609347A DE19609347A1 (de) 1996-03-11 1996-03-11 Vorrichtung zur Zerkleinerung von Blech u. ä. Material
DE19609347 1996-03-11

Publications (2)

Publication Number Publication Date
EP0795352A1 EP0795352A1 (de) 1997-09-17
EP0795352B1 true EP0795352B1 (de) 1999-12-15

Family

ID=7787842

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97103686A Expired - Lifetime EP0795352B1 (de) 1996-03-11 1997-03-06 Hammermühle zur Zerkleinerung von Blech o.a. Material

Country Status (9)

Country Link
US (1) US5950940A (da)
EP (1) EP0795352B1 (da)
JP (1) JP4031080B2 (da)
AT (1) ATE187662T1 (da)
DE (2) DE19609347A1 (da)
DK (1) DK0795352T3 (da)
ES (1) ES2142637T3 (da)
GR (1) GR3032786T3 (da)
PT (1) PT795352E (da)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19835796C2 (de) * 1998-08-07 2001-12-06 Svedala Lindemann Gmbh Verfahren zum Betreiben des Luftkreislaufes und Fördern des Gutstromes im Gehäuse eines Hammerbrechers und Gehäuse eines Hammerbrechers zur Durchführung des Verfahrens
US7942353B2 (en) * 2006-10-26 2011-05-17 Allegheny Paper Shredders Corporation Adjustable screen for material destruction apparatus
DE102007058127A1 (de) * 2007-11-30 2009-06-04 Pallmann Maschinenfabrik Gmbh & Co Kg Vorrichtung zum Auflösen des Verbundes von im Verbund vorliegendem Aufgabegut
US8740121B1 (en) * 2009-06-19 2014-06-03 Republic Machine, Inc. Rotary grinder/shredder
CN103285974A (zh) * 2013-06-03 2013-09-11 嘉兴市一建机械制造有限公司 一种破碎机篦板
GB201815328D0 (en) * 2018-09-20 2018-11-07 Agco Int Gmbh Rotary cleaning shoe
DE102020102611B4 (de) 2020-02-03 2023-04-27 Albert Hoffmann Gmbh Hammermühle
DE102020102607B4 (de) 2020-02-03 2026-03-12 Albert Hoffmann Gmbh Hammermühle
DE102020102614B4 (de) 2020-02-03 2023-10-26 Albert Hoffmann Gmbh Hammermühle
BE1030121B1 (nl) * 2021-12-28 2023-07-26 Belgian Scrap Terminal Nv Bodemrooster voor de verwerking van metalen

Family Cites Families (8)

* 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
US2946523A (en) * 1955-07-18 1960-07-26 Strong Scott Mfg Company Interchangeable screen construction for mill
DE7301542U (de) * 1973-01-12 1973-04-05 American Pulverizer Co Gitterrost fuer zerkleinerungsmahlwerke
US4061277A (en) * 1976-09-20 1977-12-06 Sivyer Steel Corporation Shredder with grate cartridge
GB1577769A (en) * 1977-05-18 1980-10-29 Maillet E J Shredders notably for processing heterogeneous materials
US4378756A (en) * 1979-09-10 1983-04-05 Recycled Paper Bedding, Inc. Animal bedding, process and apparatus for preparing the same
IT8020628V0 (it) * 1980-01-30 1980-01-30 Previero Sas Griglia selezionatrice per mulino granulatore.
US5150844A (en) * 1986-11-04 1992-09-29 Shanley And Baker Apparatus for size reduction of heavy solid waste materials

Also Published As

Publication number Publication date
JPH10369A (ja) 1998-01-06
US5950940A (en) 1999-09-14
DK0795352T3 (da) 2000-05-08
PT795352E (pt) 2000-06-30
DE19609347A1 (de) 1997-09-18
EP0795352A1 (de) 1997-09-17
ES2142637T3 (es) 2000-04-16
GR3032786T3 (en) 2000-06-30
JP4031080B2 (ja) 2008-01-09
DE59700834D1 (de) 2000-01-20
ATE187662T1 (de) 2000-01-15

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