EP0882514A1 - Trennvorrichtung - Google Patents
Trennvorrichtung Download PDFInfo
- Publication number
- EP0882514A1 EP0882514A1 EP98108738A EP98108738A EP0882514A1 EP 0882514 A1 EP0882514 A1 EP 0882514A1 EP 98108738 A EP98108738 A EP 98108738A EP 98108738 A EP98108738 A EP 98108738A EP 0882514 A1 EP0882514 A1 EP 0882514A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- separation chamber
- outlet
- inlet
- central region
- suspension
- 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.)
- Granted
Links
- 238000000926 separation method Methods 0.000 title claims abstract description 45
- 239000000725 suspension Substances 0.000 claims abstract description 18
- 239000000835 fiber Substances 0.000 claims abstract description 6
- 230000007423 decrease Effects 0.000 claims description 3
- 230000000694 effects Effects 0.000 claims description 2
- 239000000470 constituent Substances 0.000 abstract 1
- 239000007900 aqueous suspension Substances 0.000 description 5
- 239000000356 contaminant Substances 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 230000001976 improved effect Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 230000008021 deposition Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000010893 paper waste Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000001993 wax Substances 0.000 description 1
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
-
- 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
- B04C2003/003—Shapes or dimensions of vortex chambers
Definitions
- the invention relates to a separation device according to the preamble of Claim 1.
- Such separation devices are usually also referred to as hydrocyclones. They are usually used to remove contaminants from liquid-solid suspensions, e.g. Remove fiber-water suspensions.
- the suspension passes through a Inlet into the hydrocyclone, which is tangential to the inner wall of an elongated one extending deposition chamber leads.
- the inlet pressure causes a high Entry speed, which is in a free fluid vortex with a central Air core is implemented within the chamber.
- Centrifugal forces act on the Liquid and the solids and lead to a separation due to their different densities. Size and shape of the solid particles, geometry of the Hydrocyclones and the properties of the liquid also have a significant influence the effect of separation.
- the hydrocyclone usually has at least two outlets the separation chamber, an outlet being positioned to have an outflow the light fraction and the other allow outflow of the heavy fraction.
- Many hydrocyclones are designed so that they are a heavy fraction from the suspension separate.
- Other hydrocyclones are designed to be a light fraction excrete from the suspension.
- the invention has for its object a hydrocyclone with improved effect to create compared to the conventional hydrocyclones that are currently in the Are use.
- Another object of the invention is in the processing of fiber-water suspensions a reduction in fiber losses in the reject.
- Another goal of present invention is to provide higher throughput for a given To achieve pressure loss between the inlet and outlet of the hydrocyclone.
- the hydrocyclone according to the invention is designed so that it separates contaminants, which are specifically lighter than the fiber-water suspension for paper production.
- contaminants usually include many plastic parts, waxes and glue, which get into the pulp stream through the use of waste paper.
- the hydrocyclone has a tubular housing that is elongated from the inlet end extends to the end of the expiry.
- An inlet at the inlet end carries a stream of Fiber-water suspension tangentially into the housing, causing a vortex flow arises, which extends over the length of the suspension chamber to the outlet end extends.
- the vortex flow separates the relatively light fraction from the relatively heavy faction.
- the heavy fraction emerges from the separation chamber through the "Gutstoff” outlet and the light fraction through the "Rejekt” outlet.
- Gutstoff- and rejek outlet are attached to the end of the separation chamber that the tangential inlet of the fiber-water suspension is opposite.
- the separation chamber can be divided into one Inlet part, which extends from the tangential inlet to a central region, and that is along the longitudinal axis of the separation chamber and an outlet part which on the The middle section begins and extends to the end of the outlet.
- the diameter of the Inlet part gradually increases from the inlet to the middle area, during the Diameter of the outlet part gradually from the middle area to the end of the outlet decreases.
- the tubular housing defined by two truncated cones, the ends with the largest diameter are connected, the change in diameter in the separation chamber being linear.
- the tubular housing is in cohesive sections divided, in which the diameter change of Separation chamber is not linear.
- the device comprises a tubular housing 12 with a circular cross section, which the separation chamber 14th Are defined.
- the separation chamber extends in the longitudinal direction from the inlet end 14a to Expiring 14 b.
- An inlet 16 is tangential to the inlet end 14a of the separation chamber attached and connected to this.
- a reject outlet 18 and an accept outlet 20 are arranged concentrically at the outlet end 14b of the separation chamber.
- the Acceptance outlet 20 leads to an acceptance nozzle 22, the axis of which is either parallel or can be perpendicular to the longitudinal axis A of the separation chamber 14.
- the reject outlet 18 leads to a reject nozzle 24, which is similar to the longitudinal axis A. can be arranged.
- the housing 12 has an inlet part 12a, which from the inlet end 14a of the separation chamber to the central region 26 and an outlet part 12b which extends from the central region to the Leaving end 14b of the separation chamber leads.
- the diameter of the separation chamber 14 in Inlet part 12a gradually increases from inlet end 14a to central region 26.
- the diameter of the separation chamber in the outlet part 12b gradually increases Middle region 26 to the outlet end 14 b.
- Inlet and outlet part 12a and 12b are formed by truncated cones, which with their larger diameter are connected to each other in the central area and at where the diameter changes linearly.
- the fibrous suspension passes tangentially into the separation chamber at the inlet end 14a the inlet 16, a free vortex flow forming in the separation chamber.
- the fibrous suspension moves in the longitudinal direction to the outlet end 14b, whereby it first passes the inlet part 12a and then the outlet part 12b.
- the light fraction of the Fibrous suspension is the separation chamber through the reject outlet 18 and thus leave connected reject nozzle 24.
- the design of the housing and the separation chamber described above has one Improved effectiveness compared to conventional hydrocyclones, where the separation chamber has either cylindrical inlet parts or separation chambers Diameters that are constantly smaller at the outlet end.
- a special feature of the present invention is the possibility of loss to reduce useful paper fibers in the reject outlet.
- a higher one Throughput at a given pressure difference between the inlet and the accept outlet be made possible.
- Fig. 2 is a section similar to Fig. 1, which shows another embodiment of the subject matter of the invention shows in the inlet part 112 a and outlet part 112 b of the Housing 112 are curved to a gradual non-linear change in the To produce diameter of the separation chamber 14.
- Fig. 3 shows another embodiment of the invention, in the inlet and Outlet part 212 a and 212 b have different curve shapes, but again not there are linear changes in the diameter of the separation chamber 14.
- FIGS. 1 to 3 are different Have design, they have a common feature, namely that the The diameter of the separation chamber in the central area is larger compared to that Diameters at the inlet or outlet end.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Cyclones (AREA)
- Paper (AREA)
- Separation Of Solids By Using Liquids Or Pneumatic Power (AREA)
Abstract
Description
- Fig. 1
- einen schematischen Längsschnitt durch einen erfindungsgemäßen Hydrozyklon;
- Fig. 2 und 3
- jeweils ähnliche Ansichten von Variationen der Erfindung.
Claims (6)
- Vorrichtung zum Abtrennen einer Leichtfraktion einer Faserstoffsuspension von einer Schwerfraktion der Faserstoffsuspension, welche Vorrichtung ein röhrenförmiges Gehäuse (12) mit kreisförmigem Querschnitt aufweist, welches eine Trennkammer (14) bildet, die sich in Längsrichtung vom Einlaufende (14a) zum Auslaufende (14b) erstreckt, wobei das Gehäuse (12) einen Einlauf (16) am besagten Einlaufende (14a) zur tangentialen Einführung des Faserstoffsuspensionsstromes in das besagte Gehäuse (12) aufweist, um eine Wirbelströmung entlang der Länge der Trennkammer (14) in Richtung zum Auslaufende (14b) zu erzeugen, wobei die Wirbelströmung einen Trenneffekt hervorruft, der die relativ leichtere Fraktion von einer relativ schwereren Fraktion trennt, wobei das Gehäuse (12) mindestens zwei Auslässe am Auslaufende (14b) hat, von denen ein Auslaß so angeordnet ist, daß durch ihn die relativ leichtere Fraktion austreten kann und der andere Auslaß so, daß durch ihn die relativ schwerere Fraktion austreten kann,
dadurch gekennzeichnet,
daß die Trennkammer (14) in einem Mittelbereich (26) einen größeren Durchmesser aufweist im Vergleich zum Einlaufende (14a) und zum Auslaufende (14b). - Vorrichtung nach Anspruch 1,
dadurch gekennzeichnet,
daß der Durchmesser der Trennkammer (14) allmählich vom Einlaufende (14a) zum Mittelbereich (26) ansteigt und allmählich vom Mittelbereich (26) zum Auslaufende (14b) abnimmt. - Vorrichtung nach Anspruch 2,
dadurch gekennzeichnet,
daß die Durchmesseränderungen linear verlaufen. - Vorrichtung nach Anspruch 2,
dadurch gekennzeichnet,
daß die Durchmesseränderungen der Trennkammer (14) nicht- linear verlaufen. - Vorrichtung nach Anspruch 1,
dadurch gekennzeichnet,
daß das Gehäuse durch zwei hohle Kegelstümpfe definiert ist, welche miteinander im Mittelbereich (26) verbunden sind. - Hydrozyklon zum Abtrennen einer Leichtfraktion einer Faserstoffsuspension von einer Schwerfraktion dieser Suspension, welche folgende Teile umfaßt: eine Trennkammer (14),
einen Einlauf (16) am Einlaufende (14a) der Trennkammer (14), um die besagte Faserstoffsuspension in die Trennkammer (14) einzuleiten und mindestens zwei Ausläufe, welche am dem Einlaufende (14a) entgegengesetzten Auslaufende (14b) der Trennkammer (14) angeordnet sind, um die aufgeteilten Fraktionen der Faserstoffsuspension herauszuleiten,
dadurch gekennzeichnet,
daß der Durchmesser der Trennkammer (14) allmählich vom Einlaufende (14a) zu einem Mittelbereich (26) der Trennkammer (14) ansteigt und dann allmählich vom Mittelbereich (26) der Trennkammer (14) zum Auslaufende (14b) hin abnimmt.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US868628 | 1997-06-04 | ||
US08/868,628 US5899342A (en) | 1997-06-04 | 1997-06-04 | Hydrocyclone separator |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0882514A1 true EP0882514A1 (de) | 1998-12-09 |
EP0882514B1 EP0882514B1 (de) | 2002-01-30 |
Family
ID=25352043
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP98108738A Expired - Lifetime EP0882514B1 (de) | 1997-06-04 | 1998-05-14 | Trennvorrichtung |
Country Status (4)
Country | Link |
---|---|
US (1) | US5899342A (de) |
EP (1) | EP0882514B1 (de) |
CA (1) | CA2235011C (de) |
DE (1) | DE59802941D1 (de) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AU767862B2 (en) * | 1999-05-10 | 2003-11-27 | Mineral Processors (Wa) Pty Ltd | Densifier |
CN106166518A (zh) * | 2016-08-22 | 2016-11-30 | 江苏金点环保科技有限公司 | 一种动态水力旋流器 |
EP3238829A1 (de) * | 2016-04-25 | 2017-11-01 | Bosch Termoteknik Isitma ve Klima Sanayi Ticaret Anonim Sirketi | Gleichstromzyklon |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6116429A (en) * | 1999-06-23 | 2000-09-12 | Kirsgalvis; Richard D. | Filter housing extension kit |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3620370A (en) * | 1969-06-02 | 1971-11-16 | Rue E Swayze | Ore concentrator |
WO1980001467A1 (en) * | 1979-01-19 | 1980-07-24 | J Schilling | Diverging vortex separator |
JPS55114364A (en) * | 1979-02-26 | 1980-09-03 | Mitsui Eng & Shipbuild Co Ltd | Axial flow type cyclon |
DE3043729A1 (de) * | 1979-12-12 | 1981-06-19 | Papcel strojirny pro prumysl celulosy a papiru N.P., Litovel | Vertikaler wirbelsichter zum sortieren waessriger papiermasse, insbesondere zum sortieren von granulen von schaumpolystyren |
DE3024837A1 (de) * | 1980-07-01 | 1982-01-21 | Ishikawajima-Harima Jukogyo K.K., Tokyo | Teilchenabscheider |
DE8521904U1 (de) * | 1985-07-30 | 1985-12-05 | Czernawski, Norbert, 6140 Bensheim | Schleuderkammer, zum Ausschleudern unzerstäubter Flüssigkeitspartikel aus zentrischen Wirbeln |
EP0618012A1 (de) * | 1993-04-02 | 1994-10-05 | J.M. Voith GmbH | Flotationseinrichtung |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2518084A (en) * | 1945-07-23 | 1950-08-08 | Charles W Smith | Apparatus for separating relatively heavy particles from liquid |
US2655263A (en) * | 1950-10-12 | 1953-10-13 | Ferros Metals Res Company Ltd | Ore pulp concentrator |
GB1209686A (en) * | 1967-09-22 | 1970-10-21 | Papcel Celulosy Np | Improvements in or relating to vortical cleaner |
DE2622880C3 (de) * | 1976-05-21 | 1981-05-14 | Amberger Kaolinwerke Gmbh, 8452 Hirschau | Verfahren zum fraktionierten von suspendierten Feststoffen mittels Hydrozyklonen, sowie Anordnung zur Durchführung des Verfahrens |
SE406713B (sv) * | 1977-07-18 | 1979-02-26 | Celleco Ab | Hydrocykloseparator med ledskena i separeringskammarens cirkulercylindriska del |
DE4426159A1 (de) * | 1994-07-22 | 1994-12-08 | Voith Gmbh J M | Flotationseinrichtung |
-
1997
- 1997-06-04 US US08/868,628 patent/US5899342A/en not_active Expired - Fee Related
-
1998
- 1998-04-16 CA CA002235011A patent/CA2235011C/en not_active Expired - Fee Related
- 1998-05-14 EP EP98108738A patent/EP0882514B1/de not_active Expired - Lifetime
- 1998-05-14 DE DE59802941T patent/DE59802941D1/de not_active Expired - Fee Related
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3620370A (en) * | 1969-06-02 | 1971-11-16 | Rue E Swayze | Ore concentrator |
WO1980001467A1 (en) * | 1979-01-19 | 1980-07-24 | J Schilling | Diverging vortex separator |
JPS55114364A (en) * | 1979-02-26 | 1980-09-03 | Mitsui Eng & Shipbuild Co Ltd | Axial flow type cyclon |
DE3043729A1 (de) * | 1979-12-12 | 1981-06-19 | Papcel strojirny pro prumysl celulosy a papiru N.P., Litovel | Vertikaler wirbelsichter zum sortieren waessriger papiermasse, insbesondere zum sortieren von granulen von schaumpolystyren |
DE3024837A1 (de) * | 1980-07-01 | 1982-01-21 | Ishikawajima-Harima Jukogyo K.K., Tokyo | Teilchenabscheider |
DE8521904U1 (de) * | 1985-07-30 | 1985-12-05 | Czernawski, Norbert, 6140 Bensheim | Schleuderkammer, zum Ausschleudern unzerstäubter Flüssigkeitspartikel aus zentrischen Wirbeln |
EP0618012A1 (de) * | 1993-04-02 | 1994-10-05 | J.M. Voith GmbH | Flotationseinrichtung |
Non-Patent Citations (1)
Title |
---|
PATENT ABSTRACTS OF JAPAN vol. 4, no. 174 (C - 033) 2 December 1980 (1980-12-02) * |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AU767862B2 (en) * | 1999-05-10 | 2003-11-27 | Mineral Processors (Wa) Pty Ltd | Densifier |
EP3238829A1 (de) * | 2016-04-25 | 2017-11-01 | Bosch Termoteknik Isitma ve Klima Sanayi Ticaret Anonim Sirketi | Gleichstromzyklon |
CN106166518A (zh) * | 2016-08-22 | 2016-11-30 | 江苏金点环保科技有限公司 | 一种动态水力旋流器 |
Also Published As
Publication number | Publication date |
---|---|
US5899342A (en) | 1999-05-04 |
DE59802941D1 (de) | 2002-03-14 |
CA2235011A1 (en) | 1998-12-04 |
CA2235011C (en) | 2003-10-14 |
EP0882514B1 (de) | 2002-01-30 |
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