EP1191141A1 - Hydrocyclone - Google Patents

Hydrocyclone Download PDF

Info

Publication number
EP1191141A1
EP1191141A1 EP01117184A EP01117184A EP1191141A1 EP 1191141 A1 EP1191141 A1 EP 1191141A1 EP 01117184 A EP01117184 A EP 01117184A EP 01117184 A EP01117184 A EP 01117184A EP 1191141 A1 EP1191141 A1 EP 1191141A1
Authority
EP
European Patent Office
Prior art keywords
hydrocyclone
hydrocyclone according
light
pipe
light material
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Withdrawn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
EP01117184A
Other languages
German (de)
English (en)
Inventor
Rolf Hartmann
Martin Nuber
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.)
Voith Patent GmbH
Original Assignee
Voith Paper Patent 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 Voith Paper Patent GmbH filed Critical Voith Paper Patent GmbH
Publication of EP1191141A1 publication Critical patent/EP1191141A1/fr
Withdrawn legal-status Critical Current

Links

Images

Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21D—TREATMENT OF THE MATERIALS BEFORE PASSING TO THE PAPER-MAKING MACHINE
    • D21D5/00—Purification of the pulp suspension by mechanical means; Apparatus therefor
    • D21D5/18—Purification of the pulp suspension by mechanical means; Apparatus therefor with the aid of centrifugal force
    • D21D5/24—Purification of the pulp suspension by mechanical means; Apparatus therefor with the aid of centrifugal force in cyclones
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04C—APPARATUS USING FREE VORTEX FLOW, e.g. CYCLONES
    • B04C3/00—Apparatus in which the axial direction of the vortex flow following a screw-thread type line remains unchanged ; Devices in which one of the two discharge ducts returns centrally through the vortex chamber, a reverse-flow vortex being prevented by bulkheads in the central discharge duct
    • B04C3/06—Construction of inlets or outlets to the vortex chamber
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04C—APPARATUS USING FREE VORTEX FLOW, e.g. CYCLONES
    • B04C5/00—Apparatus in which the axial direction of the vortex is reversed
    • B04C5/12—Construction of the overflow ducting, e.g. diffusing or spiral exits
    • B04C5/13—Construction of the overflow ducting, e.g. diffusing or spiral exits formed as a vortex finder and extending into the vortex chamber; Discharge from vortex finder otherwise than at the top of the cyclone; Devices for controlling the overflow
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04C—APPARATUS USING FREE VORTEX FLOW, e.g. CYCLONES
    • B04C5/00—Apparatus in which the axial direction of the vortex is reversed
    • B04C5/12—Construction of the overflow ducting, e.g. diffusing or spiral exits
    • B04C5/13—Construction of the overflow ducting, e.g. diffusing or spiral exits formed as a vortex finder and extending into the vortex chamber; Discharge from vortex finder otherwise than at the top of the cyclone; Devices for controlling the overflow
    • B04C2005/133—Adjustable vortex finder

Definitions

  • the invention relates to a hydrocyclone according to the preamble of claim 1.
  • Hydrocyclones of this type are known to work well by centrifugal forces Concentrate light and heavy parts in liquids and by doing so to lead the intended discharge openings out of the hydrocyclone.
  • a special one important use for such hydrocyclones is the cleaning and degassing of Fibrous suspensions for paper production. Then e.g. which is a light fraction the cleaned accept, the other light fraction is used for degassing or Removing styrofoam, and in the heavy fraction small metal parts, Shards of glass and sand deposited.
  • a hydrocyclone is known from WO 91/06374 with which three fractions are formed can be.
  • This hydrocyclone has two relatively large conical ones Separation chambers provided, one below for the heavy parts and an overhead chamber.
  • the chamber above contains a central tube for the slight impurities.
  • the two separation chambers are together adjustable. This drives up the size as well as the manufacturing costs.
  • the invention is based on the object, a hydrocyclone for the application of to create light impurities and / or air with which an improved separation such contaminants is possible without the need for high additional equipment is.
  • the third fraction could also be defined as a medium fraction or another heavy fraction.
  • the terminology chosen here comes closest to the typical applications of the subject of the invention.
  • the configuration of the hydrocyclones according to the invention means that in the area in which the inlet opening of the inner light material tube is located Rotational flow of the suspension is both strengthened and stabilized. There namely the conical taper which leads the flow inwards, it becomes in Circumferential direction accelerated significantly. That has the advantage of being strong Centrifugal forces at the crucial point, namely the inlet opening, to rule.
  • a locally stabilized vortex core is created without the disadvantages in the removal of light contaminants, especially air, by radial Displacement of the flow vortex could result. Such discontinuities also result to transverse vibrations in the ventilation pipe and thus to faults.
  • a relatively long and slim cylindrical degassing section between the inlet opening of the outer lightweight tube and the conical taper Further improve the degassing effect.
  • Fig. 1 the upper part of a hydrocyclone according to the invention is in section Side view shown.
  • the hydrocyclone is attached via a tangential Inlet pipe 2 filled with the liquid 1 to be treated.
  • the Hydrocyclone constructed so that it uses fiber suspensions for paper production processed, i.e. can be cleaned of impurities and / or air.
  • the hydrocyclone in the Inlet area, has a cylindrical inner contour with constant Diameter 14. The lower part is only hinted at since hydrocyclones are known.
  • the hydrocyclone has an outer light pipe 4. Inside and concentric to this is the inner light pipe 6 for the second light fraction 5. It contains an inlet opening 7 from which the in Hydrocyclone concentrated light materials or air can be removed.
  • the area of the inlet opening 7 tapers the inner wall of the outer lightweight tube 4 either, as shown here, on a straight contour (with a constant Cone angle ⁇ ) or on a curved contour.
  • the inlet opening 7 is located here at an axial distance a from the narrowest point 8 of the tapered cone. It is advantageous to select this to a maximum of 50, preferably a maximum of 30 mm. In general, it should not be larger than the outer diameter 16 of the inner light-weight tube 6. It is usually best to use a certain amount of inlet opening 7 To be placed upstream from the narrowest point 8. But it is also conceivable that it is downstream (see also FIGS. 2 and 6). The lower part of the Hydrocyclones is omitted here. It is known that the heavy fraction (arrows 11) concentrated and derived.
  • the position of the Inlet opening 7 can be made axially changeable.
  • This adjustment in particular Connection with the inventive design of the hydrocyclone still too lead to further advantages. It can happen that the Rotational flow at axially different locations also forms differently. But since it When separating the two light fractions, it is important to find the area in which has an optimal concentration of air bubbles or light materials, this adjustment can be used to optimize the apparatus.
  • the Adjustment mechanism 9 is not drawn in detail, since such a task is very difficult can be easily solved.
  • the inner light pipe 6 can be screwed in and through Lock nuts are secured. The twist as such plays with this pipe does not matter because it is rotationally symmetrical.
  • This example also shows a variant at which the inlet opening 7 above the narrowest point 8 of the conical taper lies.
  • the length c of the conical taper is also given in this figure 2. She can, in order to achieve the optimal effect, in the range between 20 mm and 150 mm can be selected.
  • Fig. 3 shows another way to improve the separation effect by Grooves 10 are introduced into the conical inner wall of the outer lightweight tube 4. These have a helical shape and can therefore axial movement convert the flow - at least partially - into a rotational movement.
  • the hydrocyclone is used both for ventilation and for heavy part separation used, the measures according to the invention not only lead to an improvement ventilation but also heavy part separation.
  • the upper Area has a stable vortex flow, the entire hydrocyclone in the Operation quieter, i.e. stochastic fluctuations are significantly reduced or entirely prevented.
  • This separation zone 12 is advantageous cylindrical with a length L that is 1-5 times, preferably 3-5 times, of the inner diameter is 15.
  • the inner diameter 15 this cylindrical separation zone 12 0.2 to 0.4 times the diameter 14 that the inner wall of the hydrocyclone has at this point.
  • Even the size of the Outer diameter 16 of the inner lightweight tube 6 has an influence on the Function of the hydrocyclone. It can advantageously be selected to be approximately 0.15 to 0.4 times as large like the inner diameter 15 of the separation zone 12.
  • a relatively long length c of the conical can also have a favorable effect Be tapered, as shown in FIG. 7.
  • the cone angle ⁇ is relatively small, e.g. 5 ° to choose.
  • this drawing shows a tangential outlet 13 for the Light material 3. This allows pressure energy to be taken back.
  • This variant is also possible in other embodiments of the invention. With some There is plenty of space above the hydrocyclones for installation situations, e.g. because of the pipeline routing (distribution of substances to the hydrocyclones), so that a larger one axial distance d between the inlet pipe 2 and the outlet pipe for the Light fraction 3 is desired. Then it is usually best to use the extended one Separation zone must be provided so that a substantial part outside the Hydrocyclone housing is. This is also shown in Fig. 6.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Cyclones (AREA)
EP01117184A 2000-08-04 2001-07-16 Hydrocyclone Withdrawn EP1191141A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2000138282 DE10038282C2 (de) 2000-08-04 2000-08-04 Hydrozyklon und dessen Verwendung
DE10038282 2000-08-04

Publications (1)

Publication Number Publication Date
EP1191141A1 true EP1191141A1 (fr) 2002-03-27

Family

ID=7651445

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01117184A Withdrawn EP1191141A1 (fr) 2000-08-04 2001-07-16 Hydrocyclone

Country Status (2)

Country Link
EP (1) EP1191141A1 (fr)
DE (1) DE10038282C2 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003089148A1 (fr) * 2002-04-15 2003-10-30 The University Of Queensland Cyclone presentant trois flux de produit
DE102010047760A1 (de) * 2010-10-08 2012-04-12 Hydac Process Technology Gmbh Separatorvorrichtung
US9238888B2 (en) * 2009-07-03 2016-01-19 GL&V Luxembourg S.à r.l. Method for cleaning cellulose suspensions
WO2017191242A1 (fr) * 2016-05-04 2017-11-09 Outotec (Finland) Oy Cyclone et tube plongeur pour séparer un gaz

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101975403B (zh) * 2010-11-09 2012-11-21 陈朝云 强力龙卷风发生器
CN106694369B (zh) * 2016-12-01 2019-04-16 重庆双丰化工有限公司 分级机
DE102017213608B4 (de) * 2017-08-04 2020-06-18 Tayyar Bayrakci Gleichstromzyklonabscheider
GB2567866B (en) * 2017-10-27 2020-04-15 Dyson Technology Ltd Cyclonic separator
GB2586623B (en) 2019-08-29 2021-09-01 Weir Minerals Africa Pty Limited Cyclonic separator

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3399770A (en) * 1966-01-19 1968-09-03 Beloit Corp Method for centrifugal separation of particles from a mixture
US4259180A (en) * 1976-05-14 1981-03-31 Enso-Gutzeit Osakeyhtio Hydrocyclone
GB2177950A (en) * 1985-07-17 1987-02-04 Voith Gmbh J M Hydrocyclone
WO1991006374A1 (fr) * 1988-04-25 1991-05-16 Milan Kolman Ameliorations relatives a un hydrocylone
US5028318A (en) * 1989-04-19 1991-07-02 Aeroquip Corporation Cyclonic system for separating debris particles from fluids

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3399770A (en) * 1966-01-19 1968-09-03 Beloit Corp Method for centrifugal separation of particles from a mixture
US4259180A (en) * 1976-05-14 1981-03-31 Enso-Gutzeit Osakeyhtio Hydrocyclone
GB2177950A (en) * 1985-07-17 1987-02-04 Voith Gmbh J M Hydrocyclone
WO1991006374A1 (fr) * 1988-04-25 1991-05-16 Milan Kolman Ameliorations relatives a un hydrocylone
US5028318A (en) * 1989-04-19 1991-07-02 Aeroquip Corporation Cyclonic system for separating debris particles from fluids

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003089148A1 (fr) * 2002-04-15 2003-10-30 The University Of Queensland Cyclone presentant trois flux de produit
US9238888B2 (en) * 2009-07-03 2016-01-19 GL&V Luxembourg S.à r.l. Method for cleaning cellulose suspensions
DE102010047760A1 (de) * 2010-10-08 2012-04-12 Hydac Process Technology Gmbh Separatorvorrichtung
US9233326B2 (en) 2010-10-08 2016-01-12 Hydac Process Technology Gmbh Separating device comprising a cyclone separating device
WO2017191242A1 (fr) * 2016-05-04 2017-11-09 Outotec (Finland) Oy Cyclone et tube plongeur pour séparer un gaz
RU191344U1 (ru) * 2016-05-04 2019-08-01 Оутотек (Финлэнд) Ой Циклон и погружная труба для отделения газа

Also Published As

Publication number Publication date
DE10038282C2 (de) 2003-04-17
DE10038282A1 (de) 2002-02-21

Similar Documents

Publication Publication Date Title
EP1799903B1 (fr) Procede pour fractionner une suspension aqueuse de fibres a papier et hydrocyclone pour la mise en oeuvre dudit procede
DE2647486A1 (de) Hydrozyklon
EP2358478A1 (fr) Hydrocyclone
EP0693318B1 (fr) Dispositif de flottaison
DE102016122225B4 (de) Hydrozyklonanordnung
DE10038282C2 (de) Hydrozyklon und dessen Verwendung
WO2011076660A1 (fr) Procédé et dispositif de tamisage pour le tamisage d'une suspension de matière fibreuse
DE102011088102A1 (de) Siebvorrichtung zum Sieben einer Faserstoffsuspension
DE2355178A1 (de) Wirbel-trennvorrichtung
DE3217824C2 (de) Rotor für Sortierer zur Reinigung von Fasersuspensionen, insbesondere aus Altpapier
DE102006030905B3 (de) Verfahren zur Abscheidung von Verunreinigungen aus einer Faserstoffsuspension
EP0882514B1 (fr) Dispositif de séparation
DE19805448C2 (de) Verfahren und Vorrichtung zur Reinigung und Zuführung einer Papierstoffsuspension in den Stoffauflauf einer Papiermaschine
DE4342289A1 (de) Verfahren und Vorrichtung zum kontinuierlichen Trennen von in einer Stoffsuspension enthaltenen erwünschten von unerwünschten Stoffen
EP1166882A2 (fr) Hydrocyclone
DE1442501B2 (de) Hydrocyklon
DE20304303U1 (de) Drucksortierer zum Sieben einer Papierfaserstoffsuspension und Siebräumer für einen solchen
EP1462567B1 (fr) Classeur pour la purification d'une suspension fibreuse
DE202008018358U1 (de) Hydrozyklon
DE19803089C2 (de) Flotationsvorrichtung zur Abtrennung von Feststoffen
WO2021209315A1 (fr) Installation d'hydrocyclones
AT16830U1 (de) Ausschleuseeinrichtung
DE102021117902A1 (de) Hydrozyklone-Anordnung zum Zentrifugalabscheiden von Feststoffen aus einer Suspension
DE1442501C (de) Hydrocyklon
EP1533040A1 (fr) Hydrocyclone

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

Kind code of ref document: A1

Designated state(s): AT DE ES FI SE

Kind code of ref document: A1

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

AX Request for extension of the european patent

Free format text: AL;LT;LV;MK;RO;SI

17P Request for examination filed

Effective date: 20020927

AKX Designation fees paid

Free format text: AT DE ES FI SE

17Q First examination report despatched

Effective date: 20040924

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

Effective date: 20050125