EP0141982A3 - Pulverizing mill having pure rolling motion between the grinding roll and the bowl - Google Patents

Pulverizing mill having pure rolling motion between the grinding roll and the bowl Download PDF

Info

Publication number
EP0141982A3
EP0141982A3 EP84111398A EP84111398A EP0141982A3 EP 0141982 A3 EP0141982 A3 EP 0141982A3 EP 84111398 A EP84111398 A EP 84111398A EP 84111398 A EP84111398 A EP 84111398A EP 0141982 A3 EP0141982 A3 EP 0141982A3
Authority
EP
European Patent Office
Prior art keywords
bowl
roll
axis
grinding
point
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Withdrawn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
EP84111398A
Other languages
German (de)
French (fr)
Other versions
EP0141982A2 (en
Inventor
John Andrew Makuch
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.)
Combustion Engineering Inc
Original Assignee
Combustion Engineering Inc
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 Combustion Engineering Inc filed Critical Combustion Engineering Inc
Publication of EP0141982A2 publication Critical patent/EP0141982A2/en
Publication of EP0141982A3 publication Critical patent/EP0141982A3/en
Withdrawn legal-status Critical Current

Links

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
    • B02C15/00—Disintegrating by milling members in the form of rollers or balls co-operating with rings or discs
    • B02C15/04—Mills with pressed pendularly-mounted rollers, e.g. spring pressed
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C15/00—Disintegrating by milling members in the form of rollers or balls co-operating with rings or discs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C15/00—Disintegrating by milling members in the form of rollers or balls co-operating with rings or discs
    • B02C15/003—Shape or construction of discs or rings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C15/00—Disintegrating by milling members in the form of rollers or balls co-operating with rings or discs
    • B02C15/004—Shape or construction of rollers or balls

Landscapes

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

Abstract

A pulverizing mill (10) having a grinding bowl (12) mount­ ed so as to be rotatable about a central axis (14), and a frusto-­ conical grinding roll (20) which is in parallel relationship with the grinding surface of the bowl. The bowl is mounted at an angle (15-60°) to the horizontal. The bowl and roll are con­ structed such that the ratio of the horizontal radial distance from the axis of the bowl to the lower, inner end of the roll where it lies adjacent to the bowl surface (R₁), compared to the radius of that point from the axis about which the roll rota­ tes (r₁), is equal to the ratio of the horizontal radial distance from the axis of the bowl to the upper end of the roll at the point where it lies adjacent to the bowl surface (R₂), compared to the radius of that point from the axis about which the roll ro­ tates (r₂), so that as the bowl and roll rotate about their respec­ tive axes (14, 22), the roll surface moves across the bowl sur­ face with only rolling movement, rather than a combination of rolling and sliding movement, to thereby reduce the wear on these surfaces.
EP84111398A 1983-10-24 1984-09-25 Pulverizing mill having pure rolling motion between the grinding roll and the bowl Withdrawn EP0141982A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US54434583A 1983-10-24 1983-10-24
US544345 1995-10-17

Publications (2)

Publication Number Publication Date
EP0141982A2 EP0141982A2 (en) 1985-05-22
EP0141982A3 true EP0141982A3 (en) 1986-02-26

Family

ID=24171795

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84111398A Withdrawn EP0141982A3 (en) 1983-10-24 1984-09-25 Pulverizing mill having pure rolling motion between the grinding roll and the bowl

Country Status (6)

Country Link
EP (1) EP0141982A3 (en)
JP (1) JPS6094151A (en)
KR (1) KR850003338A (en)
AU (1) AU3460784A (en)
ES (1) ES8602445A1 (en)
ZA (1) ZA848241B (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2179888C2 (en) * 1997-04-15 2002-02-27 Фсб Apparatus for progressive feeding of material in grinder
KR100660569B1 (en) * 2005-12-15 2006-12-22 한국남동발전 주식회사 How to repair the rollers and rotating plates of the grinder
DE102009015037B4 (en) 2009-03-26 2011-03-31 Loesche Gmbh roller mill
US10493462B2 (en) * 2016-06-21 2019-12-03 General Electric Technology Gmbh System, method and apparatus for upgrading a pulverizer
CN106345572B (en) * 2016-11-09 2019-04-12 厦门金邦达实业有限责任公司 A kind of split type mill bowl of coal pulverizer
CN119926588B (en) * 2025-01-10 2025-11-18 江西华赛新材料有限公司 Grinding equipment is used in lithium carbonate production
CN120479550B (en) * 2025-04-28 2026-05-01 华能淮阴第二发电有限公司 Coal grinding structure and coal mill

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB428237A (en) * 1933-11-20 1935-05-09 Josephus Wass Improvements in or relating to grinding, crushing and mixing mills
US3962966A (en) * 1975-01-13 1976-06-15 Domtar Limited Chip crusher

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB428237A (en) * 1933-11-20 1935-05-09 Josephus Wass Improvements in or relating to grinding, crushing and mixing mills
US3962966A (en) * 1975-01-13 1976-06-15 Domtar Limited Chip crusher

Also Published As

Publication number Publication date
ES536784A0 (en) 1985-12-01
ES8602445A1 (en) 1985-12-01
EP0141982A2 (en) 1985-05-22
JPS6094151A (en) 1985-05-27
ZA848241B (en) 1985-06-26
AU3460784A (en) 1985-05-09
KR850003338A (en) 1985-06-17

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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

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AK Designated contracting states

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

PUAL Search report despatched

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AK Designated contracting states

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

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

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18W Application withdrawn

Withdrawal date: 19860228

RIN1 Information on inventor provided before grant (corrected)

Inventor name: MAKUCH, JOHN ANDREW