DE69713331D1 - dedusting - Google Patents

dedusting

Info

Publication number
DE69713331D1
DE69713331D1 DE69713331T DE69713331T DE69713331D1 DE 69713331 D1 DE69713331 D1 DE 69713331D1 DE 69713331 T DE69713331 T DE 69713331T DE 69713331 T DE69713331 T DE 69713331T DE 69713331 D1 DE69713331 D1 DE 69713331D1
Authority
DE
Germany
Prior art keywords
throttling
enlargement
suction
inlet
forming
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
DE69713331T
Other languages
German (de)
Other versions
DE69713331T2 (en
Inventor
Tommy Linden
Ingemar Myren
Lars-Erik Oennerloev
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.)
Metso Paper Oy
Original Assignee
Metso Paper Oy
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 Metso Paper Oy filed Critical Metso Paper Oy
Application granted granted Critical
Publication of DE69713331D1 publication Critical patent/DE69713331D1/en
Publication of DE69713331T2 publication Critical patent/DE69713331T2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21G—CALENDERS; ACCESSORIES FOR PAPER-MAKING MACHINES
    • D21G3/00—Doctors

Landscapes

  • Cleaning In General (AREA)
  • Paper (AREA)
  • Cyclones (AREA)
  • Percussion Or Vibration Massage (AREA)
  • Filtering Of Dispersed Particles In Gases (AREA)
  • Filters For Electric Vacuum Cleaners (AREA)

Abstract

An apparatus for removing dust released, for instance, during the production of a soft crepe paper web (1) which is creped off a Yankee cylinder (2) and spread laterally comprises a dust suction box (18) consisting of a housing (20) with an inner suction chamber (21), said housing (20) having a first inlet (24) in the form of a suction gap, a main part (25) and first and second parts (26, 27) which define said suction gap (24) between them. According to the invention the main part is in the form of part of a cylinder to provide a corresponding curved inner side (34) in the suction chamber, and the suction gap comprises an outer gradual throttling (29) and an inner gradual enlargement (30), said throttling and enlargement merging at a transition (31) where said throttling is maximal. The first inlet forming part (26) comprises a flat surface (33) that defines its side of said enlargement whereas the second part (27) forming the inlet comprises both a curved surface (36) having predetermined radius and such an arc length that it defines the whole of its side of the throttling (29) and an initial part of the enlargement (30), and also an inner, flat surface (37) extending at a tangent from the curved surface (36) and forming an acute angle alpha with a tangent to the curved surface at said transition.
DE69713331T 1996-05-21 1997-03-06 dedusting Expired - Lifetime DE69713331T2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE9601915A SE506595C2 (en) 1996-05-21 1996-05-21 Dust removal device
PCT/SE1997/000382 WO1997044525A1 (en) 1996-05-21 1997-03-06 Dust removal apparatus

Publications (2)

Publication Number Publication Date
DE69713331D1 true DE69713331D1 (en) 2002-07-18
DE69713331T2 DE69713331T2 (en) 2003-01-09

Family

ID=20402627

Family Applications (2)

Application Number Title Priority Date Filing Date
DE69713331T Expired - Lifetime DE69713331T2 (en) 1996-05-21 1997-03-06 dedusting
DE0912802T Pending DE912802T1 (en) 1996-05-21 1997-03-06 DEDUSTING DEVICE

Family Applications After (1)

Application Number Title Priority Date Filing Date
DE0912802T Pending DE912802T1 (en) 1996-05-21 1997-03-06 DEDUSTING DEVICE

Country Status (7)

Country Link
EP (1) EP0912802B1 (en)
JP (1) JP4001351B2 (en)
AT (1) ATE219188T1 (en)
CA (1) CA2252909C (en)
DE (2) DE69713331T2 (en)
SE (1) SE506595C2 (en)
WO (1) WO1997044525A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8034192B2 (en) * 2007-11-16 2011-10-11 Andritz Fiber Drying Ltd. Method and system for collecting paper dust
EP3269875B1 (en) * 2016-07-12 2019-03-20 Valmet S.p.A. A dust-handling device for collecting and handling dust in a paper-making environment
CN110840102B (en) * 2019-12-09 2021-07-02 江西白莲智能科技集团有限公司 Library is with dustproof bookshelf

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE459105B (en) * 1987-10-01 1989-06-05 Valmet Paper Machinery Inc KEEPING AND DEVICE FOR DISPOSAL OF DAMS RELEASED DURING THE DISPOSAL OF A PAPER COAT
SE463317B (en) * 1989-03-15 1990-11-05 Valmet Paper Machinery Inc DEVICE BY A CRAZY CREATOR
US5011574A (en) * 1990-02-28 1991-04-30 Valmet Paper Machinery, Inc. Creping doctor with two suction chambers in the support beam

Also Published As

Publication number Publication date
EP0912802A1 (en) 1999-05-06
JP4001351B2 (en) 2007-10-31
ATE219188T1 (en) 2002-06-15
CA2252909C (en) 2003-07-29
DE912802T1 (en) 1999-10-07
SE506595C2 (en) 1998-01-19
WO1997044525A1 (en) 1997-11-27
JP2000510918A (en) 2000-08-22
DE69713331T2 (en) 2003-01-09
CA2252909A1 (en) 1997-11-27
SE9601915D0 (en) 1996-05-21
SE9601915L (en) 1997-11-22
EP0912802B1 (en) 2002-06-12

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition