US3659794A - Comminuting device - Google Patents

Comminuting device Download PDF

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Publication number
US3659794A
US3659794A US50094A US3659794DA US3659794A US 3659794 A US3659794 A US 3659794A US 50094 A US50094 A US 50094A US 3659794D A US3659794D A US 3659794DA US 3659794 A US3659794 A US 3659794A
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US
United States
Prior art keywords
comminuting
rotor
bars
mounting
housing portion
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
US50094A
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English (en)
Inventor
Gerhard Hemesath
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.)
HAZEMAG HARTZERKLEINERUNG
HAZEMAG HARTZERKLEINERUNGS-UND ZEMENT-MASCHINENBAU -GMBH
Original Assignee
HAZEMAG HARTZERKLEINERUNG
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 HAZEMAG HARTZERKLEINERUNG filed Critical HAZEMAG HARTZERKLEINERUNG
Application granted granted Critical
Publication of US3659794A publication Critical patent/US3659794A/en
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
    • B02C13/02—Disintegrating by mills having rotary beater elements ; Hammer mills with horizontal rotor shaft
    • B02C13/06—Disintegrating by mills having rotary beater elements ; Hammer mills with horizontal rotor shaft with beaters rigidly connected to the rotor
    • B02C13/09—Disintegrating by mills having rotary beater elements ; Hammer mills with horizontal rotor shaft with beaters rigidly connected to the rotor and throwing the material against an anvil or impact plate
    • B02C13/095—Disintegrating by mills having rotary beater elements ; Hammer mills with horizontal rotor shaft with beaters rigidly connected to the rotor and throwing the material against an anvil or impact plate with an adjustable anvil or impact plate

Definitions

  • ABSTRACT A rotor is mounted in a housing and has circum'ferentially distributed contact members. Spaced from the rotor are breaker members against which material to be comminuted and admitted into the housing, is flung by the contact members with resulting break-up of such material.
  • the lower portion of the rotor circumference is surrounded by an arcuately curved shell defining with the rotor a channel for comminuted material which tapers in direction towards an outlet of the housing.
  • the shell is composed of supports which mount a plurality of parallel rods extending lengthwise of the rotor axis. Each rod has associated with it a comminuting bar of polygonal crosssection, formed with a longitudinal slot in which the respective rod is lodged. The bars are connected in abutting relationship so that no material can fall through between them.
  • the present invention relates to a comminuting apparatus.
  • Another attempt of the prior art is more advantageous. It involves the use of a shell-like structure which surrounds the lower portion of the rotor periphery and defines therewith a gap or channel which decreases or tapers in direction towards the housing outlet.
  • the comminuted material falls into this gap and advances along the same, being constantly contacted by the contact members on the rotor. This results in further comminution of the material, and the maximum grain size reaching the housing outlet is obviously determined by the narrowest area of the gap, thus assuring a certain maximum grain size, It was found, however, that the contact members tend to simply push the material along the gap if the surface of the structure which defines this gap with the rotor circumference, is smooth.
  • the surface is made rough and uneven, for instance of sawtooth-shaped configuration. Whatever provides this roughness, i.e. unevennesses inherent in the surface or separate elements of suitable configuration, it is clear that there is significant wear from contact with the material being cominuted. Thus, projections, edges or the like are worn away quite rapidly and it follows that they must be replaced to maintain the apparatus in proper operating conditron.
  • my invention provides a comminuting device one embodiment of which comprises, briefly stated, housing means having an outlet.
  • Rotor means is mounted in the housing means for rotation therein, and has a plurality of circumferentially distributed contact portions adapted to contact material which is to be comminuted and to fling it away from the rotor means.
  • the channelling means comprises, in accordance with the invention, a plurality of parallel elongated supports extending lengthwise of the rotor means axis and arranged in an arcuate path in correspondence with the taper of the gap.
  • a corresponding plurality of comminuting bars is provided, and each of these has a slot or groove receiving one of the supports. Adjacent ones of the bars abut one another in pressure-transmitting relationship.
  • the bars are made from material which has the desired hardness and resistance to wear, because it is they which together provide that surface of the channelling means between which and the contact members of the rotor the material advances along the gap to the outlet, being further reduced in size by contact with this surface and the contact members until it passes the narrowest area of the gap.
  • FIG. 1 is a somewhat diagrammatic cross-section through a device according to one embodiment of the invention.
  • FIG. 2 is a fragmentary sectioned detail view, on an enlarged scale, of the device shown in FIG. 1.
  • reference numeral 1 identifies a housing or, more properly, a main housing portion.
  • housing portion 1 Mounted in housing portion 1 is a rotor 3 for rotation about its longitudinal axis.
  • the rotor 3 will be driven in rotation by suitable means, but details concerning the drive are of no importance in the context of the invention and therefore a drive has not been shown.
  • a plurality of contact members 2 mounted on the rotor 3, distributed circumferentially of the same, is a plurality of contact members 2 whose mounting and configuration is also known and not of importance for the invention.
  • material to be comminuted which has been admitted into the main housing portion I via inlet 4, comes in contact with the contact members (or vice versa) and is forcibly flung outwardly by them. It then impinges upon the breaker members 5, which may be slightly yieldable, and by contact with which it becomes broken up or fractured.
  • the device will be seen to have comminuting zones 6 and 7, and it is evident that the material rebounds in these zones repeatedly between the members 2 and 5. becoming progressively more comminuted until it leaves zone 7 through the clearance 8 which is defined between the lower edges of the members on the one hand and the radially outermost edges of the members 2 on the other hand.
  • a channelling arrangement arcuately surrounds the lower circumference of the rotor 3 to define therewith a gap or channel which decreases or tapers in direction towards the outlet 4a.
  • the side of the channelling arrangement which faces towards the rotor 3 is constituted by comminuting bars 10 which are arranged in step-like manner, as illustrated.
  • Supports 11 are provided-at least two, which are spaced axially of the rotor 3-on which there are mounted elongated elements of desired cross-section which extend axially of rotor 3 and carry comminuting bars 10.
  • the supports 11 are pivoted at 11', and at least one screw-spindle l3or analogous means-is provided which engages the supports 11 and a stationary part of the device with its opposite end portions, and which permits displacement of supports 11 about pivot 11' to thereby adjust the width of the narrowest portion 12 of the channelling gap, such width being determinative of the largest particle or grain size of comminuted material which can reach the outlet 4a.
  • the comminuting edges of the bars 10 are subject to stray wear. This requires that the bars be exchanged for new ones, heretofore necessitating the provision of large lateral openings in the housing to afford access. Evidently, such openings weaken the housing and make the mounting of auxiliary elements, such as hydraulic cylinders, control consoles, and the like, more difficult. Also, the removal of the bars 10 and the installation of new ones was often made difficult and time-consuming by accumulated dirt and other contaminants.
  • each of the bars 10 has its underside provided with a longitudinally extending slot or groove 16 in which a corresponding member 15-which are rigid with supports 11, as by welding-is lodged.
  • the bars 10 are so arranged that they form a stepped surface directed towards the rotor 3, with the lower front edge of each bar 10 resting upon the upper rear edge of the nextfollowing bar 10, seen in direction from the clearance 8 towards the gap 12.
  • the bars 10 maintain one another in position by pressure transmission, with the pressure originating at the pressure bar 17 which is pressed by means of screws 18 or analogous means against the uppermost bar 10 which transmits the pressure to the next-following bar 10 and so forth.
  • the bars 10 are all identical, thus facilitating both their replacement and the stock-keeping problems involved in having replacement bars on hand.
  • the components which constitute the channelling arrangement are advantageously all mounted in an auxiliary housing portion 19.
  • Rails or the like 21 are provided, and rollers, wheels or the like roll on them so that the housing portion 19 and these aforementioned components can be readily withdrawn from and inserted into the main housing portion 1 in toto.
  • this arrangement permits a further adjustment of the gap 12 in accordance with the desired grain or particle size, and also to compensate for wear of the members 2 and/or 10.
  • a comminuting device comprising housing means having an outlet; rotor means mounted in said housing means for rotation and having a plurality of circumferentially distributed contact portions adapted to contact material which is to be comminuted and fling it away from said rotor means; breaker means and in said housing means in the vicinity of said rotor means and positioned in the path of material flung away by said contact portions, so that such material impinges upon said breaker means and breaks up in consequence of such impingement; channelling means surrounding a lower portion of the rotor means circumference and defining therewith a gap which decreases in direction towards said outlet, said channelling means comprising a plurality of parallel elongated members constituting supports extending lengthwise of the rotor means axis and arranged in an arcuate path, and a corresponding plurality of other members constituting comminuting bars adjacent ones of which abut one another and each of which has at least one comminuting edge exposed to the material being comminuted,
  • said housing means comprising a main housing portion including said rotor means, and an auxiliary housing portion surrounding said channelling means and separable from said main housing portion.
  • a comminuting device as defined in claim 7 further comprising path-defining means extending from the interior to the exterior of said main housing portion, and roller means provided on said auxiliary housing portion and cooperating with said path-defining means, for enabling withdrawal of said auxiliary housing portion with said channelling means from said main housing portion.

Landscapes

  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Crushing And Grinding (AREA)
  • Disintegrating Or Milling (AREA)
  • Crushing And Pulverization Processes (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
US50094A 1969-07-08 1970-06-26 Comminuting device Expired - Lifetime US3659794A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1934545A DE1934545C3 (de) 1969-07-08 1969-07-08 Mahlbahn für Prallmühlen

Publications (1)

Publication Number Publication Date
US3659794A true US3659794A (en) 1972-05-02

Family

ID=5739185

Family Applications (1)

Application Number Title Priority Date Filing Date
US50094A Expired - Lifetime US3659794A (en) 1969-07-08 1970-06-26 Comminuting device

Country Status (7)

Country Link
US (1) US3659794A (enrdf_load_stackoverflow)
AT (1) AT319019B (enrdf_load_stackoverflow)
CA (1) CA921889A (enrdf_load_stackoverflow)
DE (1) DE1934545C3 (enrdf_load_stackoverflow)
FR (1) FR2054368A5 (enrdf_load_stackoverflow)
GB (1) GB1248720A (enrdf_load_stackoverflow)
ZA (1) ZA703940B (enrdf_load_stackoverflow)

Cited By (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3829031A (en) * 1972-09-22 1974-08-13 Babcock & Wilcox Ltd Wear plate
US4140284A (en) * 1975-09-15 1979-02-20 Hazemag Dr. E. Andreas Gmbh & Co. Impact crusher
US4223844A (en) * 1977-07-08 1980-09-23 Maillet Edgard J Breaker-crusher mill with pivoted hammers
US4273294A (en) * 1979-03-15 1981-06-16 Air Products And Chemicals, Inc. Method and apparatus for cryogenic grinding
US4506837A (en) * 1981-04-17 1985-03-26 Fried.Krupp Gesellschaft Mit Beschraenkter Haftung Impact crusher
US4730791A (en) * 1984-08-29 1988-03-15 Thyssen Industrie Aktiengesellschaft Arrangement of the working gap of a crushing machine having a horizontally disposed hammer crusher rotor
US5255869A (en) * 1992-10-26 1993-10-26 Smith Roger G Impact crusher with biased tertiary curtain assembly
US5390862A (en) * 1992-06-12 1995-02-21 7/7/77 Incorporated Apparatus for chipping and grinding tree limbs
US5513811A (en) * 1993-12-18 1996-05-07 Noell Service Und Maschinentechnik Gmbh Impactor with a pivotable grinding face
US5881959A (en) * 1995-05-04 1999-03-16 Cmi Corporation Materials grinder with infeed conveyor and anvil
US5975443A (en) * 1996-08-08 1999-11-02 Hundt; Vincent G. Waste recycling device
WO2003000425A1 (en) * 2001-05-06 2003-01-03 Rocktec Limited Improvements to rotor tip
US20030141394A1 (en) * 2001-05-22 2003-07-31 Kazunori Ueda Self- propelling wood crusher machine and wood crusher
US20040061009A1 (en) * 2002-01-28 2004-04-01 Rosser F. F. Scrap fragmenting apparatus
RU2229339C1 (ru) * 2002-12-15 2004-05-27 Санкт-Петербургский государственный горный институт им. Г.В. Плеханова (Технический университет) Роторная дробилка
US20040113002A1 (en) * 2001-10-18 2004-06-17 Tessier Lynn P. Device and method for comminuting materials
RU2252075C1 (ru) * 2003-12-31 2005-05-20 Государственное образовательное учреждение высшего профессионального образования Санкт-Петербургский государственный горный институт им. Г.В. Плеханова (технический университет) Роторная дробилка
US20070241219A1 (en) * 2001-10-18 2007-10-18 Aerosion Ltd. Apparatus and methodology for comminuting materials
US20110186664A1 (en) * 2010-01-29 2011-08-04 Scott Equipment Company Dryer/Grinder
US20110253822A1 (en) * 2010-04-16 2011-10-20 Sandvik Intellectual Property Ab Horizontal shaft impact crusher
US20140138464A1 (en) * 2011-07-21 2014-05-22 Thomas E. Casper Safety device, backflow reduction device, conformable wood processing device, and methods thereof for a waste processing system

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3857520A (en) * 1972-10-27 1974-12-31 Unice Machine Co Oscillating anvil disintegrator
DE2406204C3 (de) * 1974-02-09 1986-07-10 Lindemann Maschinenfabrik GmbH, 4000 Düsseldorf Befestigung von auswechselbaren Schleißplatten an Gehäusewänden von Zerkleinerungsmaschinen
AT354831B (de) * 1978-05-12 1980-01-25 Voest Ag Prallmuehle zum zerkleinern von gestein od.dgl.
AT369670B (de) * 1980-03-22 1983-01-25 Hazemag Andreas Kg Prallmuehle mit einer mahlbahn, die aus geschichteten schlag- oder pralleisten besteht
US4373678A (en) 1980-06-30 1983-02-15 Reitter Guenther W Rotary impact crusher having a continuous rotary circumference
CN105944795A (zh) * 2016-06-24 2016-09-21 山东义科节能科技股份有限公司 一种用于建陶原材料破碎的专用高速破碎机
CN119140223A (zh) * 2024-11-12 2024-12-17 徐州铭山路桥机械设备制造有限公司 一种立式制砂机

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2373691A (en) * 1940-05-13 1945-04-17 Lee H Kessler Stone crushing apparatus
US2554071A (en) * 1949-07-09 1951-05-22 Jeffrey Mfg Co Pulverizer having a two-part housing
US2595810A (en) * 1947-06-30 1952-05-06 Willis M Perry Hammer-mill bed plate and teeth therefor
US2644644A (en) * 1951-06-08 1953-07-07 Pennsylvania Crusher Co Two stage hammer mill
DE1134876B (de) * 1959-08-22 1962-08-16 Babcock & Wilcox Dampfkessel Hammermuehle
US3083921A (en) * 1961-05-02 1963-04-02 Bath Iron Works Corp Dust prevention device for rotary impactor
US3447758A (en) * 1964-07-23 1969-06-03 Nicolas Oznobichine Multiple impact breaker
US3455517A (en) * 1966-02-04 1969-07-15 Portec Inc Rotary impact crusher

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2373691A (en) * 1940-05-13 1945-04-17 Lee H Kessler Stone crushing apparatus
US2595810A (en) * 1947-06-30 1952-05-06 Willis M Perry Hammer-mill bed plate and teeth therefor
US2554071A (en) * 1949-07-09 1951-05-22 Jeffrey Mfg Co Pulverizer having a two-part housing
US2644644A (en) * 1951-06-08 1953-07-07 Pennsylvania Crusher Co Two stage hammer mill
DE1134876B (de) * 1959-08-22 1962-08-16 Babcock & Wilcox Dampfkessel Hammermuehle
US3083921A (en) * 1961-05-02 1963-04-02 Bath Iron Works Corp Dust prevention device for rotary impactor
US3447758A (en) * 1964-07-23 1969-06-03 Nicolas Oznobichine Multiple impact breaker
US3455517A (en) * 1966-02-04 1969-07-15 Portec Inc Rotary impact crusher

Cited By (32)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3829031A (en) * 1972-09-22 1974-08-13 Babcock & Wilcox Ltd Wear plate
US4140284A (en) * 1975-09-15 1979-02-20 Hazemag Dr. E. Andreas Gmbh & Co. Impact crusher
US4223844A (en) * 1977-07-08 1980-09-23 Maillet Edgard J Breaker-crusher mill with pivoted hammers
US4273294A (en) * 1979-03-15 1981-06-16 Air Products And Chemicals, Inc. Method and apparatus for cryogenic grinding
US4506837A (en) * 1981-04-17 1985-03-26 Fried.Krupp Gesellschaft Mit Beschraenkter Haftung Impact crusher
US4730791A (en) * 1984-08-29 1988-03-15 Thyssen Industrie Aktiengesellschaft Arrangement of the working gap of a crushing machine having a horizontally disposed hammer crusher rotor
US5390862A (en) * 1992-06-12 1995-02-21 7/7/77 Incorporated Apparatus for chipping and grinding tree limbs
US5255869A (en) * 1992-10-26 1993-10-26 Smith Roger G Impact crusher with biased tertiary curtain assembly
US5513811A (en) * 1993-12-18 1996-05-07 Noell Service Und Maschinentechnik Gmbh Impactor with a pivotable grinding face
AU685186B2 (en) * 1993-12-18 1998-01-15 Noell Service Und Maschinentechnik Gmbh Impactor with pivotable grinding path
US5881959A (en) * 1995-05-04 1999-03-16 Cmi Corporation Materials grinder with infeed conveyor and anvil
US5975443A (en) * 1996-08-08 1999-11-02 Hundt; Vincent G. Waste recycling device
WO2003000425A1 (en) * 2001-05-06 2003-01-03 Rocktec Limited Improvements to rotor tip
US20040164195A1 (en) * 2001-05-06 2004-08-26 Robson Angus Peter Rotor tip
US20030141394A1 (en) * 2001-05-22 2003-07-31 Kazunori Ueda Self- propelling wood crusher machine and wood crusher
US20040113002A1 (en) * 2001-10-18 2004-06-17 Tessier Lynn P. Device and method for comminuting materials
US7207513B2 (en) 2001-10-18 2007-04-24 Aerosion Ltd. Device and method for comminuting materials
US20070241219A1 (en) * 2001-10-18 2007-10-18 Aerosion Ltd. Apparatus and methodology for comminuting materials
US7530513B2 (en) 2001-10-18 2009-05-12 Aerosion, Ltd. Apparatus and methodology for comminuting materials
US20040061009A1 (en) * 2002-01-28 2004-04-01 Rosser F. F. Scrap fragmenting apparatus
US20050145734A1 (en) * 2002-01-28 2005-07-07 Uxb International, Inc. Scrap fragmenting apparatus
RU2229339C1 (ru) * 2002-12-15 2004-05-27 Санкт-Петербургский государственный горный институт им. Г.В. Плеханова (Технический университет) Роторная дробилка
RU2252075C1 (ru) * 2003-12-31 2005-05-20 Государственное образовательное учреждение высшего профессионального образования Санкт-Петербургский государственный горный институт им. Г.В. Плеханова (технический университет) Роторная дробилка
US20110186664A1 (en) * 2010-01-29 2011-08-04 Scott Equipment Company Dryer/Grinder
US20110253822A1 (en) * 2010-04-16 2011-10-20 Sandvik Intellectual Property Ab Horizontal shaft impact crusher
CN102834178A (zh) * 2010-04-16 2012-12-19 山特维克知识产权股份有限公司 水平轴冲击式破碎机
US8668158B2 (en) * 2010-04-16 2014-03-11 Sandvik Intellectual Property Ab Horizontal shaft impact crusher
CN102834178B (zh) * 2010-04-16 2014-11-26 山特维克知识产权股份有限公司 水平轴冲击式破碎机
AU2011241156B2 (en) * 2010-04-16 2015-01-15 Sandvik Intellectual Property Ab Horizontal shaft impact crusher
US8967504B2 (en) 2010-04-16 2015-03-03 Sandvik Intellectual Property Ab Horizontal shaft impact crusher
US20140138464A1 (en) * 2011-07-21 2014-05-22 Thomas E. Casper Safety device, backflow reduction device, conformable wood processing device, and methods thereof for a waste processing system
US10166696B2 (en) * 2011-07-21 2019-01-01 Bandit Industries, Inc. Safety device, backflow reduction device, conformable wood processing device, and methods thereof for a waste processing system

Also Published As

Publication number Publication date
FR2054368A5 (enrdf_load_stackoverflow) 1971-04-16
DE1934545A1 (de) 1970-10-15
ZA703940B (en) 1971-04-28
DE1934545B2 (de) 1978-11-09
AT319019B (de) 1974-11-25
CA921889A (en) 1973-02-27
GB1248720A (en) 1971-10-06
DE1934545C3 (de) 1981-01-29

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