EP0766031B1 - Vorrichtung und Verfahren zur verstopfungsfreien Drosselung einer fluiden Suspensionsströmung - Google Patents

Vorrichtung und Verfahren zur verstopfungsfreien Drosselung einer fluiden Suspensionsströmung Download PDF

Info

Publication number
EP0766031B1
EP0766031B1 EP96118580A EP96118580A EP0766031B1 EP 0766031 B1 EP0766031 B1 EP 0766031B1 EP 96118580 A EP96118580 A EP 96118580A EP 96118580 A EP96118580 A EP 96118580A EP 0766031 B1 EP0766031 B1 EP 0766031B1
Authority
EP
European Patent Office
Prior art keywords
valve
accordance
liquid
restrictor
hollow body
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
EP96118580A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0766031A3 (OSRAM
EP0766031A2 (de
Inventor
Ulrich Begemann
Helmut Heinzmann
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.)
JM Voith GmbH
Original Assignee
JM Voith GmbH
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 JM Voith GmbH filed Critical JM Voith GmbH
Priority claimed from EP94109147A external-priority patent/EP0633416B1/de
Publication of EP0766031A2 publication Critical patent/EP0766031A2/de
Publication of EP0766031A3 publication Critical patent/EP0766031A3/xx
Application granted granted Critical
Publication of EP0766031B1 publication Critical patent/EP0766031B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F1/00—Wet end of machines for making continuous webs of paper
    • D21F1/02—Head boxes of Fourdrinier machines
    • D21F1/022—Means for injecting material into flow within the headbox
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F1/00—Wet end of machines for making continuous webs of paper
    • D21F1/06—Regulating pulp flow
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F1/00—Wet end of machines for making continuous webs of paper
    • D21F1/08—Regulating consistency
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15D—FLUID DYNAMICS, i.e. METHODS OR MEANS FOR INFLUENCING THE FLOW OF GASES OR LIQUIDS
    • F15D1/00—Influencing flow of fluids
    • F15D1/02—Influencing flow of fluids in pipes or conduits

Definitions

  • the invention relates to a valve or throttle device according to the preamble of claim 1 and a method for reduction the tendency of a valve or throttle device to clog with a constriction provided in a line to Feeding one Stock suspension for the headbox of a paper machine according to the preamble of claim 5.
  • valves are available for throttling fluid flows of the technique.
  • Significant disadvantages of these valves e.g. Ball valves, Flap valves, needle valves and the like is that they are used to adjust a generate relatively narrow cross sections of the desired flow rate. It is known in such valves that cross-sections of this size when Flow through with material suspension in an undesirable way to clog tend and when operating in paper machines fiber wiping -local Create fiber clusters - and deposits. It either happens to blockages of the valve or there will be fiber wiping or Deposits due to the lack of influence of shear forces before the start the sheet formation process is not resolved, which is the cheapest Fall formation currents arise in the paper web.
  • the Experience shows that inhomogeneities of this type are common in the leaf Represent the starting point of tears of the entire paper web and thus lead to decisive malfunctions in a paper machine.
  • a valve with a rotating liquid supply is known from US-A-3 998 244, however in the field of irrigation systems.
  • the invention has for its object a valve or To describe throttle device, in which by suitable constructive Equipment to avoid fiber wiping or the risk of clogging becomes.
  • the inventors have recognized that the tendency for clogging occurs in a valve, especially with a valve type that corresponds to a needle valve, can be significantly reduced if the flow in the range of adds a rotational component to the narrowest part of the valve.
  • the Rotational component causes a resolution of any existing Turbulence, and the resulting fiber wiping or Fiber accumulations that can lead to constipation.
  • FIG. 1 shows a throttle device 1 according to the invention in cross section.
  • the throttle device consists of an essentially rotationally symmetrical cylindrical cavity a constriction 3.
  • the cavity is arranged via an eccentric radius-parallel feed 4 a fluid flow perpendicular to the axis of the cylindrical cavity supplied.
  • the fluid flow S thus occurs tangentially into the cavity and is thereby deflected towards Axis direction of the cavity. In this way the flow receives S a spiral course within the cylindrical cavity.
  • a plunger 2 is axially attached to this cavity, which in the present case on the lower side, i.e. the side facing the throttling with one Extension is provided.
  • the plunger 2 can be moved in the axial direction provided so that by axially moving this plunger Cross-sectional narrowing similar to a needle valve is effected. In contrast to a normal needle valve, however, causes the tangentially inserted Flow around the bottleneck sufficiently so that at this Avoid blockages from solids carried in the flow can arise. This is particularly advantageous for stock suspension flows in paper machines in which such blockages, ie Fiber wiping, very unfavorable effects on the quality of the produced paper.
  • FIG. 2 shows the section A-A through the throttle device of Figure 1.
  • the plan view shown is the tangential feed described above Flow S in the cylindrical interior of the throttle device clearly shown.
  • the invention is naturally not limited to a purely tangential one Feeding the flow into the throttle chamber of a throttle device. It there is also the possibility, e.g. through suitable spherical elements Change direction of the supplied flow in the entire solid angle, so that on the one hand an angle not equal to 90 ° to the main axis of the throttle device can be taken and at the same time the eccentricity of the Material flow in relation to the axis of the cylindrical throttle device can be influenced.
  • This is a simple way of influencing the Slope of the rotating flow spiral in the throttle device possible, whereby on the one hand the cleaning effect to the desired extent can be influenced and on the other hand an additional increase or reduction of the throttling is possible without the passage area F must be changed using the plunger 2.
  • FIG 3 shows the application of the valve shown in Figures 1 and 2 on Example of the regulated supply of dilution water in the Main flow of stock suspension into a headbox.
  • On the main line H is in one An angle other than 90 ° leads to a supply of dilution water in the Main stream H shown.
  • the feed consists essentially of the Throttle element 1 itself, the throttle element being of the same design has as the element shown in Figure 1 and with its feed line directly to the second cross distributor Q2, which contains the dilution water leads, is connected.
  • the Throttle device 1 By choosing the right angle between the Main flow H and that supplied by the throttle device Secondary flow N is achieved that regardless of the supplied Flow rate of the secondary flow N is the sum of the headbox guided suspension amount remains constant.
  • the Throttle device 1 is any fiber wiping in the Throttle device avoided, so that no loss of quality manufactured paper are to be feared.
  • the throttle device 1 is operated so that in the normal operating point a medium amount Stock suspension is guided through the throttle device 1, whereby none Sedimentation processes of solids in the throttle device are possible.
  • the Regulation of the consistency i.e. the concentration of the total suspension the currents N and H, then takes place around this middle operating point, where the sum of the total current remains constant and a very sensitive dosed control of the concentration through the design of the throttle device 1 is reached.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Paper (AREA)
EP96118580A 1993-07-05 1994-06-15 Vorrichtung und Verfahren zur verstopfungsfreien Drosselung einer fluiden Suspensionsströmung Expired - Lifetime EP0766031B1 (de)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
DE4322321 1993-07-05
DE4322321 1993-07-05
DE4402516A DE4402516C2 (de) 1993-07-05 1994-01-28 Vorrichtung und Verfahren zur verstopfungsfreien Drosselung einer fluiden Suspensionsströmung
DE4402516 1994-01-28
EP94109147A EP0633416B1 (de) 1993-07-05 1994-06-15 Vorrichtung und Verfahren zur verstopfungsfreien Drosselung einer fluiden Suspensionsströmung

Related Parent Applications (2)

Application Number Title Priority Date Filing Date
EP94109147.2 Division 1994-06-15
EP94109147A Division EP0633416B1 (de) 1993-07-05 1994-06-15 Vorrichtung und Verfahren zur verstopfungsfreien Drosselung einer fluiden Suspensionsströmung

Publications (3)

Publication Number Publication Date
EP0766031A2 EP0766031A2 (de) 1997-04-02
EP0766031A3 EP0766031A3 (OSRAM) 1997-04-16
EP0766031B1 true EP0766031B1 (de) 2000-03-29

Family

ID=6491989

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96118580A Expired - Lifetime EP0766031B1 (de) 1993-07-05 1994-06-15 Vorrichtung und Verfahren zur verstopfungsfreien Drosselung einer fluiden Suspensionsströmung

Country Status (3)

Country Link
US (1) US5709777A (OSRAM)
EP (1) EP0766031B1 (OSRAM)
DE (2) DE4402516C2 (OSRAM)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202009002792U1 (de) 2009-02-27 2009-04-30 Voith Patent Gmbh Ventilanordnung und Verteilereinheit zur Verteilung von Volumenströmen

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5853545A (en) * 1996-03-08 1998-12-29 Valmet-Karlstad Ab Arrangement for feeding stock to a headbox in a papermaking machine
EP0878578A3 (de) * 1997-05-13 1999-07-07 Voith Sulzer Papiermaschinen GmbH Schnellreinigungsvorrichtung
DE29708459U1 (de) * 1997-05-13 1997-07-17 Voith Sulzer Papiermaschinen GmbH, 89522 Heidenheim Schnellreinigungsventil
US6234666B1 (en) 1998-09-09 2001-05-22 Cta, Inc. Dynamic delivery line mixing apparatus and method
DE19843728A1 (de) 1998-09-24 2000-03-30 Voith Sulzer Papiertech Patent Verfahren und Vorrichtung zur Reinhaltung beziehungsweise Reinigung des Niederkonsistenzstrangs eines Stoffauflaufsystems
DE19947745A1 (de) * 1999-10-05 2001-04-12 Voith Paper Patent Gmbh Drosselventil
DE19949067C1 (de) * 1999-10-12 2001-05-23 Pama Papiermaschinen Gmbh Ventil zum Regulieren eines Suspensionsstromes an Papiermaschinen
GB2367564B (en) * 2000-10-04 2004-02-18 Sandusky Walmsley Ltd Method of and apparatus for distribution of paper stock in paper or board making machinery
FI122820B (fi) * 2004-04-30 2012-07-13 Vaahto Oy Laitteisto väliainevirtauksen säätämiseksi
DE102009014268B3 (de) 2009-03-20 2010-04-08 Andritz Küsters Gmbh Anordnung an Papiermaschinen zur Einstellung eines Flächengewichts-Querprofils
DE102010001557A1 (de) * 2010-02-03 2011-08-04 Voith Patent GmbH, 89522 Ventil zum Regulieren eines Fluidstroms
DE102010001555A1 (de) * 2010-02-03 2011-08-04 Voith Patent GmbH, 89522 Ventil zum Regulieren eines Fluidstroms

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE391407C (de) * 1924-03-06 English Electric Co Ltd Ventil zur Steuerung des Durchtritts von unter Druck stehender Fluessigkeit in einen nicht mit Fluessigkeit gefuellten Raum
US2620046A (en) * 1952-12-02 Sheetsx-sheet l
US2558356A (en) * 1946-12-02 1951-06-26 Danciger Oil & Refining Compan Pressure control device
US3502308A (en) * 1967-06-03 1970-03-24 Yawata Seitetsu Kk Wet type gas scrubber
SE345295B (OSRAM) * 1969-02-18 1972-05-23 Asea Ab
US3846229A (en) * 1972-01-28 1974-11-05 Lodding Engineering Corp Flow systems for inducing fine-scale turbulence
US3894562A (en) * 1973-12-20 1975-07-15 Jr Charles D Moseley Fluid flow controller
US3998244A (en) * 1975-08-08 1976-12-21 Clarence Bentley Drip irrigation valve with helical flow path
US4200119A (en) * 1978-05-08 1980-04-29 Cunningham Patrick J Adjustable fluid flow restrictor
DE3137702A1 (de) * 1981-09-22 1983-05-05 Kraftwerk Union AG, 4330 Mülheim Stellventil, insbesondere zur steuerung und regelung von dampfturbinen
DE3137687A1 (de) * 1981-09-22 1983-04-07 Kraftwerk Union AG, 4330 Mülheim Stellventil, insbesondere zur steuerung und regelung von dampfturbinen
JPS59140972A (ja) * 1983-01-31 1984-08-13 Yamatake Honeywell Co Ltd ケ−ジ弁
US5197711A (en) * 1991-07-01 1993-03-30 Ingersoll-Rand Company Fluid connection and control device for fluid machines

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202009002792U1 (de) 2009-02-27 2009-04-30 Voith Patent Gmbh Ventilanordnung und Verteilereinheit zur Verteilung von Volumenströmen

Also Published As

Publication number Publication date
EP0766031A3 (OSRAM) 1997-04-16
DE4402516C2 (de) 1997-11-20
DE59409257D1 (de) 2000-05-04
DE4402516A1 (de) 1994-07-07
EP0766031A2 (de) 1997-04-02
US5709777A (en) 1998-01-20

Similar Documents

Publication Publication Date Title
EP0565923B1 (de) Mischeinrichtung zum Mischen von zwei Flüssigkeiten bei konstantem Gemischvolumenstrom zur Versorgung des Stoffauflaufs einer Papiermaschine
EP0766031B1 (de) Vorrichtung und Verfahren zur verstopfungsfreien Drosselung einer fluiden Suspensionsströmung
DE4239542A1 (de) Rotordüse für ein Hochdruckreinigungsgerät
WO1989005195A1 (fr) Ajutage a tourbillon vaporisateur de liquides
EP0040334A2 (de) Wasserdüse mit Selbstreinigungsvorrichtung
DE3883640T2 (de) Verfahren und Vorrichtung zum Pumpen von Fasersuspensionen von hoher Konsistenz.
EP0633416B1 (de) Vorrichtung und Verfahren zur verstopfungsfreien Drosselung einer fluiden Suspensionsströmung
DE3030980A1 (de) Hydrozyklon.
EP0734776B1 (de) Rotordüse, insbesondere für Hochdruckreinigungsgerät
DE3348218C2 (OSRAM)
DE69217081T2 (de) Hydrozyklon mit turbulenz erzeugenden mitteln
EP0633417B1 (de) Vorrichtung und Verfahren zur Drosselung einer Stoffsuspensionsströmung einer Papiermaschine
EP2531651A1 (de) Ventil zum regulieren eines fluidstroms
DE69422824T2 (de) System zur sprühtrocknung mit einer bypassdüse
DE2809575C2 (de) Hydrozyklonabscheider
DE2700028A1 (de) Vollkegel-spritzduese
DE4211290C2 (de) Mischeinrichtung mit veränderlichen Rohrquerschnitten zum Mischen von zwei Flüssigkeiten bei konstantem Gemischvolumenstrom zur Versorgung des Stoffauflaufs einer Papiermaschine
EP2531650B1 (de) Ventil zum regulieren eines fluidstroms
DE69526449T2 (de) Düse
DE19949067C1 (de) Ventil zum Regulieren eines Suspensionsstromes an Papiermaschinen
EP0882514B1 (de) Trennvorrichtung
DE3889559T2 (de) Verfahren und Vorrichtung zur Verbesserung der Behandlung einer Fasersuspension und zur Kontrolle des Fliessens einer Fasersuspension.
DE9205111U1 (de) Mischeinrichtung zum Mischen von zwei Flüssigkeiten bei konstantem Gemischvolumenstrom zur Versorgung des Stoffauflaufs einer Papiermaschine
DE4237307C2 (de) Stoffauflauf einer eine Faserbahn bildenden Maschine
DE9112589U1 (de) Vorrichtung zum Auftragen von Streichfarbe auf eine Faserstoffbahn

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

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AC Divisional application: reference to earlier application

Ref document number: 633416

Country of ref document: EP

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AT CH DE FR GB IT LI SE

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AT CH DE FR GB IT LI SE

17P Request for examination filed

Effective date: 19970927

17Q First examination report despatched

Effective date: 19990226

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AC Divisional application: reference to earlier application

Ref document number: 633416

Country of ref document: EP

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT CH DE FR GB IT LI SE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20000329

REF Corresponds to:

Ref document number: 191266

Country of ref document: AT

Date of ref document: 20000415

Kind code of ref document: T

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REF Corresponds to:

Ref document number: 59409257

Country of ref document: DE

Date of ref document: 20000504

ITF It: translation for a ep patent filed
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20000630

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20000630

ET Fr: translation filed
GBV Gb: ep patent (uk) treated as always having been void in accordance with gb section 77(7)/1977 [no translation filed]

Effective date: 20000329

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

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

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

26N No opposition filed
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20120622

Year of fee payment: 19

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

Ref country code: SE

Payment date: 20120621

Year of fee payment: 19

Ref country code: FR

Payment date: 20120705

Year of fee payment: 19

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

Ref country code: IT

Payment date: 20120628

Year of fee payment: 19

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

Ref country code: AT

Payment date: 20120613

Year of fee payment: 19

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20130616

REG Reference to a national code

Ref country code: SE

Ref legal event code: EUG

REG Reference to a national code

Ref country code: AT

Ref legal event code: MM01

Ref document number: 191266

Country of ref document: AT

Kind code of ref document: T

Effective date: 20130615

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20140228

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 59409257

Country of ref document: DE

Effective date: 20140101

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20140101

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20130615

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20130701

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20130615