EP0025238A1 - Broyeur centrifuge - Google Patents

Broyeur centrifuge Download PDF

Info

Publication number
EP0025238A1
EP0025238A1 EP80200755A EP80200755A EP0025238A1 EP 0025238 A1 EP0025238 A1 EP 0025238A1 EP 80200755 A EP80200755 A EP 80200755A EP 80200755 A EP80200755 A EP 80200755A EP 0025238 A1 EP0025238 A1 EP 0025238A1
Authority
EP
European Patent Office
Prior art keywords
drum
axis
discharge
conical extension
grinding drum
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Withdrawn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
EP80200755A
Other languages
German (de)
English (en)
Inventor
Konrad Dipl.-Ing. Schymura
Friedrich Rosenstock
Heinrich Ing.Grad. Gote
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.)
GEA Group AG
Original Assignee
Metallgesellschaft AG
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 Metallgesellschaft AG filed Critical Metallgesellschaft AG
Publication of EP0025238A1 publication Critical patent/EP0025238A1/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Withdrawn legal-status Critical Current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
    • B02C17/00—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
    • B02C17/04—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls with unperforated container
    • B02C17/08—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls with unperforated container with containers performing a planetary movement

Definitions

  • the invention relates to a centrifugal mill with a cylindrical grinding drum which rotates about its own drum axis and at the same time rotates on a rotating circle with a constant rotation ratio about a fixed axis of rotation parallel to the drum axis, the distance between the drum axis and the axis of rotation being smaller than the radius of the grinding drum.
  • a drive mechanism for the rotation of the grinding drum about the drum axis and for rotation on the rotation circle a loading device on one end part and a discharge device on the other end part of the grinding drum.
  • a centrifugal mill with a cylindrical grinding drum of the type described at the outset is known, the feeding being carried out by means of a funnel-shaped loading device through a vertical end part and an overflow nozzle being arranged as a discharge device in the other vertical end part.
  • a discharge screw can also be arranged in the discharge device, which feeds coarse material back into the grinding drum.
  • Such a centrifugal mill with a horizontally mounted grinding drum is also described in DE-OS 2647578, in which a central opening with a charging device is arranged in a vertical end part and a central opening with an overflow nozzle is arranged in the other vertical end part.
  • the invention has for its object to reduce the wear in the loading and emptying zone and to prevent the throwing out of grinding media.
  • conical extension parts are arranged on both end parts
  • a spiral entry device is placed on the loading side of the conical extension part
  • discharge openings are arranged on the discharge side near the end of the conical extension part in the jacket of the cone.
  • the conical extension parts are attached to the open end parts with their axis extending the axis of the grinding drum. They can consist of several parts that are attached one behind the other. This makes assembly and disassembly easier and quicker access to the grinding drum.
  • the loading opening of the spiral is arranged upwards.
  • the size of the loading opening is expediently chosen so that the edge of the opening does not cover an area during the movement of the grinding drum on the rotation circle, which is sufficient for a stationary loading. In the case of a horizontally arranged grinding drum and a rectangular opening, the distance between the two edges parallel to the axis of the grinding drum must be greater than the diameter of the rotating circle. This means e.g. no flexible loading device connected to the opening required.
  • a preferred embodiment is that the spiral of the entry device is arranged in one plane. This results in a particularly even entry of the material into the grinding drum.
  • a preferred embodiment consists in that the part of the conical extension part provided with the discharge openings is cylindrical. This results in a particularly even discharge.
  • a preferred embodiment consists in that a collecting channel with a directed discharge opening is fastened around the part of the conical extension part provided with discharge openings. As a result, the discharged material is collected in a simple manner and can be removed in one place.
  • a preferred embodiment is that the discharge openings in the conical extension part are slit-shaped. This also makes the discharge more uniform.
  • the conical extension part 2a and the discharge side the conical extension part 2b are fastened to the two front parts 1 of the grinding drum.
  • the spiral-shaped insertion device 3 is placed on the extension part 2a.
  • slot-shaped discharge devices 4 are attached in the jacket of the cone near the end of the cone.
  • the spiral 5 is arranged in one plane in the insertion device 3.
  • the part of the extension part 2b provided with discharge openings is cylindrical and surrounded by a collecting channel 7 with the discharge opening 8 directed downwards.
  • the advantages of the invention are that the wear in the loading and emptying zone is significantly reduced, the throwing out of grinding media is avoided, and a very uniform loading and very uniform discharge is achieved with a considerable increase in throughput.

Landscapes

  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Crushing And Grinding (AREA)
  • Polysaccharides And Polysaccharide Derivatives (AREA)
  • Preparation Of Compounds By Using Micro-Organisms (AREA)
EP80200755A 1979-09-07 1980-08-08 Broyeur centrifuge Withdrawn EP0025238A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2936208 1979-09-07
DE19792936208 DE2936208A1 (de) 1979-09-07 1979-09-07 Zentrifugalmuehle

Publications (1)

Publication Number Publication Date
EP0025238A1 true EP0025238A1 (fr) 1981-03-18

Family

ID=6080309

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80200755A Withdrawn EP0025238A1 (fr) 1979-09-07 1980-08-08 Broyeur centrifuge

Country Status (8)

Country Link
EP (1) EP0025238A1 (fr)
JP (1) JPS5645767A (fr)
AU (1) AU6208580A (fr)
CA (1) CA1146517A (fr)
DE (1) DE2936208A1 (fr)
IN (1) IN151923B (fr)
NO (1) NO802426L (fr)
ZA (1) ZA805516B (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100389053C (zh) * 2005-11-09 2008-05-21 中国铝业股份有限公司 隔仓式给矿器

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3224098A1 (de) * 1982-06-29 1983-12-29 Metallgesellschaft Ag, 6000 Frankfurt Zentrifugalmuehle mit horizontaler, zylinderfoermiger mahltrommel
JP3002476U (ja) * 1994-01-20 1994-09-27 大島工業株式会社 ボールミル

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE204949C (fr) *
US2549919A (en) * 1947-06-06 1951-04-24 Smidth & Co As F L Airswept rotary mill or drum having separate discharge means for air and ground material
US3027104A (en) * 1961-02-28 1962-03-27 Newton L Hall Horizontal rotary grinding mill with floating load-partition
FR1289073A (fr) * 1961-05-04 1962-03-30 Kloeckner Humboldt Deutz Ag Broyeur pour le concassage fin de matières naturelles ou synthétiques
FR2323446A1 (fr) * 1975-09-10 1977-04-08 Chamber Mines Services Proprie Broyeur centrifuge

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE204949C (fr) *
US2549919A (en) * 1947-06-06 1951-04-24 Smidth & Co As F L Airswept rotary mill or drum having separate discharge means for air and ground material
US3027104A (en) * 1961-02-28 1962-03-27 Newton L Hall Horizontal rotary grinding mill with floating load-partition
FR1289073A (fr) * 1961-05-04 1962-03-30 Kloeckner Humboldt Deutz Ag Broyeur pour le concassage fin de matières naturelles ou synthétiques
FR2323446A1 (fr) * 1975-09-10 1977-04-08 Chamber Mines Services Proprie Broyeur centrifuge

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100389053C (zh) * 2005-11-09 2008-05-21 中国铝业股份有限公司 隔仓式给矿器

Also Published As

Publication number Publication date
IN151923B (fr) 1983-09-03
AU6208580A (en) 1981-03-12
CA1146517A (fr) 1983-05-17
ZA805516B (en) 1982-04-28
JPS5645767A (en) 1981-04-25
DE2936208A1 (de) 1981-03-26
NO802426L (no) 1981-03-09

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Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): AT BE DE FR GB IT LU NL SE

17P Request for examination filed

Effective date: 19810527

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION HAS BEEN WITHDRAWN

18W Application withdrawn

Withdrawal date: 19830509

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 19870831

RIN1 Information on inventor provided before grant (corrected)

Inventor name: SCHYMURA, KONRAD, DIPL.-ING.

Inventor name: GOTE, HEINRICH, ING.GRAD.

Inventor name: ROSENSTOCK, FRIEDRICH