GB1189317A - Rotary Bowl Mill - Google Patents

Rotary Bowl Mill

Info

Publication number
GB1189317A
GB1189317A GB45315/67A GB4531567A GB1189317A GB 1189317 A GB1189317 A GB 1189317A GB 45315/67 A GB45315/67 A GB 45315/67A GB 4531567 A GB4531567 A GB 4531567A GB 1189317 A GB1189317 A GB 1189317A
Authority
GB
United Kingdom
Prior art keywords
ring
mill
particles
gas
deflector
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
Application number
GB45315/67A
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 GB1189317A publication Critical patent/GB1189317A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K7/00—Modulating pulses with a continuously-variable modulating signal
    • H03K7/08—Duration or width modulation ; Duty cycle modulation
    • 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
    • B02C15/001—Air flow directing means positioned on the periphery of the horizontally rotating milling surface
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23K—FEEDING FUEL TO COMBUSTION APPARATUS
    • F23K1/00—Preparation of lump or pulverulent fuel in readiness for delivery to combustion apparatus
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K7/00—Modulating pulses with a continuously-variable modulating signal
    • H03K7/04—Position modulation, i.e. PPM
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23K—FEEDING FUEL TO COMBUSTION APPARATUS
    • F23K2201/00—Pretreatment of solid fuel
    • F23K2201/10—Pulverizing
    • F23K2201/1006—Mills adapted for use with furnaces

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Crushing And Grinding (AREA)
  • Amplitude Modulation (AREA)
  • Pulse Circuits (AREA)

Abstract

1,189,317. Roller-and-ring mills. COMBUSTION ENG. Inc. 4 Oct., 1967 [28 Dec., 1966], No. 45315/67. Heading B2A. A mill 10 Fig. 1, comprises a rotatable grinding ring 12, a plurality of coacting rollers 22 and an annular passage 31 between the ring and the mill casing; the mill includes deflectors 40 above the annular passage 31 to direct gas along with the pulverized particles both inwardly and downwardly, so that the coarser particles separate out of the gas stream and are redeposited on the grinding ring 12. In operation, coal is supplied at 28 and air at 30. Pulverized coal is thrown outwards into the passage 31 and directed with the gas by vanes 44 Fig. 3 until it reaches the edge 54 of the deflector 40. The coarser particles drop out on to the grinding ring 12. The gas and fine particles enter a classifier 34 via inlets 32 and remaining coarse particles are returned to the ring, fines being carried along with the gas stream out of the mill by outlets 38. The coarse particles are fed in a level uniform manner to the rollers 22 by the edge 54 of the deflector 40.
GB45315/67A 1966-12-28 1967-10-04 Rotary Bowl Mill Expired GB1189317A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US60541066A 1966-12-28 1966-12-28

Publications (1)

Publication Number Publication Date
GB1189317A true GB1189317A (en) 1970-04-22

Family

ID=24423550

Family Applications (2)

Application Number Title Priority Date Filing Date
GB15375/47A Expired GB624543A (en) 1966-12-28 1947-06-11 Modulation systems
GB45315/67A Expired GB1189317A (en) 1966-12-28 1967-10-04 Rotary Bowl Mill

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB15375/47A Expired GB624543A (en) 1966-12-28 1947-06-11 Modulation systems

Country Status (7)

Country Link
US (1) US3465971A (en)
BE (2) BE705087A (en)
CH (1) CH484701A (en)
ES (1) ES346000A1 (en)
FR (1) FR929389A (en)
GB (2) GB624543A (en)
NL (2) NL6714390A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19806895C2 (en) * 1998-02-19 2002-10-24 Pfeiffer Ag Geb Method and device for optimizing the milling bed of roller-type bowl mills

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3223286A (en) * 1961-08-16 1965-12-14 Gen Turbine Corp Portable sprayer with air operated mixing means
JPS5415348B2 (en) * 1975-01-28 1979-06-14
JPS5813950Y2 (en) * 1979-01-19 1983-03-18 川崎重工業株式会社 Fine grinding device
JPS5814822B2 (en) * 1979-01-19 1983-03-22 川崎重工業株式会社 Stator structure of vortex type pulverizer
US4234132A (en) * 1979-05-21 1980-11-18 Combustion Engineering, Inc. Bowl mill with air deflector means
GB2181971B (en) * 1985-10-29 1988-11-09 Smidth & Co As F L Vertical roller mill
US4754932A (en) * 1987-03-18 1988-07-05 Combustion Engineering, Inc. Coal pulverizer inerting and fire extinguishing system
JPH0757324B2 (en) 1987-03-24 1995-06-21 三菱重工業株式会社 Roller mill with rotary classifier
US4792099A (en) * 1987-04-29 1988-12-20 Combustion Engineering, Inc. Pulverizer auxiliary lubrication system
US5875977A (en) 1998-05-13 1999-03-02 Combustion Engineering, Inc. Technique for improving the response time of pulverized coal boilers
US6079648A (en) 1999-03-01 2000-06-27 Combustion Engineering, Inc. Arrangement for securing a vane wheel assembly to a grinding table of a pulverizing bowl mill
US7252253B2 (en) * 2003-05-13 2007-08-07 Bharat Heavy Electricals Ltd. Bowl mill for a coal pulverizer with an air mill for primary entry of air
US7267293B2 (en) * 2005-05-13 2007-09-11 Alstom Technology Ltd High efficiency bowl mill
DE102005030145B4 (en) * 2005-06-28 2007-10-04 Loesche Gmbh Safety system for a roller mill
US7448565B2 (en) * 2006-09-01 2008-11-11 Alstom Technology Ltd Low profile primary classifier
US7584917B2 (en) * 2007-03-29 2009-09-08 Alstom Technology Ltd Seal for coiled spring assembly
US7690590B2 (en) * 2008-06-13 2010-04-06 Alstom Technology Ltd Electronically controlled journal loading system
US8087172B2 (en) * 2008-09-26 2012-01-03 Alstom Technology Ltd. Method and apparatus for extended life journal assembly
US8491196B2 (en) * 2008-11-11 2013-07-23 Babcock Power Services, Inc. Bearing upgrade and kit

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2206145A (en) * 1938-12-22 1940-07-02 Comb Eng Co Inc Air flow choke for bowl mills
US2431746A (en) * 1944-08-25 1947-12-02 Comb Eng Co Inc Bowl mill with vane means providing uniform velocity upwardly swirling air currents
US2641387A (en) * 1947-02-27 1953-06-09 Simpson Herbert Corp Mixing machine discharge door
US2698142A (en) * 1953-02-03 1954-12-28 Combustion Eng Bowl mill with novel bowl and air flow directing means
US2818219A (en) * 1954-03-24 1957-12-31 Straight Engineering Co Dry pan scraper

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19806895C2 (en) * 1998-02-19 2002-10-24 Pfeiffer Ag Geb Method and device for optimizing the milling bed of roller-type bowl mills

Also Published As

Publication number Publication date
FR929389A (en) 1947-12-24
GB624543A (en) 1949-06-10
BE475118A (en)
BE705087A (en) 1968-04-16
NL132163C (en)
CH484701A (en) 1970-01-31
ES346000A1 (en) 1969-01-16
US3465971A (en) 1969-09-09
NL6714390A (en) 1968-07-01

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee