EP0882514B1 - Separation device - Google Patents
Separation device Download PDFInfo
- Publication number
- EP0882514B1 EP0882514B1 EP98108738A EP98108738A EP0882514B1 EP 0882514 B1 EP0882514 B1 EP 0882514B1 EP 98108738 A EP98108738 A EP 98108738A EP 98108738 A EP98108738 A EP 98108738A EP 0882514 B1 EP0882514 B1 EP 0882514B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- separating chamber
- suspension
- inlet
- outlet
- fibrous 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.)
- Expired - Lifetime
Links
- 238000000926 separation method Methods 0.000 title claims description 32
- 239000000725 suspension Substances 0.000 claims description 17
- 230000007423 decrease Effects 0.000 claims description 3
- 230000000694 effects Effects 0.000 claims description 2
- 239000002657 fibrous material Substances 0.000 claims 6
- 239000007900 aqueous suspension Substances 0.000 description 5
- 239000000356 contaminant Substances 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 239000000835 fiber Substances 0.000 description 2
- 239000008187 granular material Substances 0.000 description 2
- 230000001976 improved effect Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 1
- 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
- 238000004062 sedimentation Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 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 Heilkem 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 with an outlet positioned to have an outflow flow 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 deposit.
- Other hydrocyclones are designed to be a light fraction excrete from the suspension.
- a hydrocyclone which is used for sorting aqueous Pulp is intended.
- this is intended to remove parts from the suspension whose specific weight is less than that of water.
- This known hydrocyclone has about halfway up an annular sedimentation chamber, which has a larger one Diameter than the remaining parts of the hydrocyclion, thereby eliminating them from heavy parts to possible. But it also acts as a barrier and increases it Flow resistance.
- 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 outlet end.
- 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.
Description
Die Erfindung bezieht sich auf eine Trennvorrichtung gemäß dem Oberbegriff des Anspruchs 1.The invention relates to a separation device according to the preamble of Claim 1.
Derartige Trennvorrichtungen werden in der Regel auch als Hydrozyklone bezeichnet. Sie werden gewöhnlich verwendet, um Schmutzstoffe aus Flüssig-Fest-Suspensionen, z.B. Faser-Wasser-Suspensionen, zu entfernen. Die Suspension tritt durch einen Einlauf in den Hydrozyklon ein, welcher tangential zu der Innenwand einer länglich sich erstreckenden Abscheidekammer führt. Der Einlaufdruck bewirkt eine hohe Einlaufgeschwindigkeit, welche in einen freien Flüssigkeitswirbel mit einem zentralen Luftkem innerhalb der Kammer umgesetzt wird. Zentrifugalkräfte wirken auf die Flüssigkeit und die Feststoffe ein und führen zu einer Trennung infolge ihrer unterschiedlichen Dichten. Größe und Form der Feststoffpartikel, Geometrie des Hydrozyklons und die Eigenschaften der Flüssigkeit beeinflussen ebenfalls signifikant den Effekt der Trennung. Der Hydrozyklon hat in der Regel mindestens zwei Auslässe aus der Trennkammer, wobei ein Auslaß so positioniert ist, daß er eine Ausflußströmung der Leichtfraktion und der andere eine Ausflußströmung der Schwerfraktion gestattet. Viele Hydrozyklone sind so konstruiert, daß sie aus der Suspension eine Schwerfraktion abscheiden. Andere Hydrozyklone wiederum sind so gestaltet, daß sie eine Leichtfraktion aus der Suspension ausscheiden.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 Luftkem 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 with an outlet positioned to have an outflow flow 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 deposit. Other hydrocyclones, in turn, are designed to be a light fraction excrete from the suspension.
Aus der DE 30 43 729 A ist ein Hydrozyklon bekannt, der zum Sortieren wässriger Papiermasse gedacht ist. Insbesondere sollen damit Teile aus der Suspension entfernt werden, deren spezifisches Gewicht geringer ist als das von Wasser. Dabei sind speziell Leichtstoffgranulatskörner (Granulen) genannt. Dieser bekannte Hydrozyklon weist auf etwa halber Höhe eine kreisringförmige Absetzkammer auf, die einen größeren Durchmesser als die übrigen Teile des Hydrozykions hat, um dadurch das Ausscheiden von Schwerteilen zu ennoglichen. Sie wirkt aber auch als Barriere und erhöht den Strömungswiderstand. From DE 30 43 729 A a hydrocyclone is known which is used for sorting aqueous Pulp is intended. In particular, this is intended to remove parts from the suspension whose specific weight is less than that of water. Are special Lightweight granules called (granules). This known hydrocyclone has about halfway up an annular sedimentation chamber, which has a larger one Diameter than the remaining parts of the hydrocyclion, thereby eliminating them from heavy parts to possible. But it also acts as a barrier and increases it Flow resistance.
Der Erfindung liegt die Aufgabe zugrunde, einen Hydrozyklon mit verbesserter Wirkung zu schaffen im Vergleich zu den konventionellen Hydrozyklonen, die zur Zeit im Gebrauch sind.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.
Diese Aufgabe wird durch die im Kennzeichen des Anspruchs 1 genannten Merkmale bereits gelöst.This object is achieved by the features mentioned in the characterizing part of claim 1 already solved.
Ein weiteres Ziel der Erfindung ist bei der Verarbeitung von Faserstoff-Wasser-Suspensionen eine Verringerung der Faserverluste im Rejekt. Ein weiteres Ziel der vorliegenden Erfindung liegt darin, einen höheren Durchsatz bei gegebenem Druckverlust zwischen Einlauf und Auslaß des Hydrozyklons zu erreichen.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.
Der erfindungsgemäße Hydrozyklon ist so konstruiert, daß er Schmutzstoffe abscheidet, die spezifisch leichter sind als die Faser-Wasser-Suspension für die Papiererzeugung. Solche Verunreinigungen umfassen in der Regel viele Plastikteile, Wachse und Kleber, welche in den Faserstoffstrom durch den Einsatz von Altpapier gelangen.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. Such contaminants usually include many plastic parts, waxes and glue, which get into the pulp stream through the use of waste paper.
Der Hydrozyklon hat ein röhrenförmiges Gehäuse, das sich länglich vom Einlaufende zum Auslaufende erstreckt. Ein Einlauf am Einlaufende führt einen Strom der Faser-Wasser-Suspension tangential in das Gehäuse ein, so daß eine Wirbelströmung entsteht, die sich über die Länge der Suspensionskammer hin zum Auslaufende erstreckt. Die Wirbelströmung bewirkt die Abscheidung der relativ leichten Fraktion von der relativ schweren Fraktion. Die Schwerfraktion tritt aus der Trennkammer durch den "Gutstoff"-Auslaß aus und die Leichtfraktion durch den "Rejekt"-Auslaß. Gutstoff -und Rejektauslaß sind an dem Ende der Trennkammer angebracht, die dem tangentialen Einlauf der Faser-Wasser-Suspension gegenüber liegt.The hydrocyclone has a tubular housing that is elongated from the inlet end extends to the outlet end. 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.
Um die Erklärung zu erleichtern, kann man die Trennkammer unterteilen in einen Einlaufteil, der sich vom tangentialen Einlauf bis zu einem Mittelbereich erstreckt, und zwar entlang der Längsachse der Trennkammer sowie einen Auslaufteil, der an dem Mittelbereich beginnt und sich bis zum Auslaufende erstreckt. Der Durchmesser des Einlaufteiles nimmt allmählich vom Einlauf bis zum Mittelbereich zu, während der Durchmesser des Auslaufteiles allmählich vom Mittelbereich bis zum Auslaufende abnimmt.To make the explanation easier, 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.
In einer bevorzugten Ausführungsform der Erfindung ist das röhrenförmige Gehäuse durch zwei Kegelstümpfe definiert, die an ihren Enden mit dem größten Durchmesser verbunden sind, wobei die Durchmesseränderung in der Trennkammer linear verläuft.In a preferred embodiment of the invention, 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.
In einer anderen Ausführungsform der Erfindung ist das röhrenförmige Gehäuse in zusammenhängende Abschnitte unterteilt, bei denen die Durchmesserveränderung der Trennkammer nicht linear ist.In another embodiment of the invention, the tubular housing is in cohesive sections divided, in which the diameter change of Separation chamber is not linear.
Diese und andere Ausführungsformen und Vorteile der vorliegenden Erfindungen werden erläutert anhand der folgenden Zeichnungen, welche zeigen:
- Fig. 1
- einen schematischen Längsschnitt durch einen erfindungsgemäßen Hydrozyklon;
- Fig. 2 und 3
- jeweils ähnliche Ansichten von Variationen der Erfindung.
- Fig. 1
- a schematic longitudinal section through a hydrocyclone according to the invention;
- 2 and 3
- similar views of variations of the invention.
Zunächst zeigt die Fig. 1 eine Vorrichtung als bevorzugte Ausführungsform der
vorliegenden Erfindung mit Bezugszeichen 10. Die Vorrichtung umfaßt ein
röhrenförmiges Gehäuse 12 mit kreisförmigem Querschnitt, das die Trennkammer 14
definiert. Die Trennkammer erstreckt sich in Längsrichtung vom Einlaufende 14a zum
Auslaufende 14 b. Ein Einlauf 16 ist tangential am Einlaufende 14a der Trennkammer
angebracht und mit diesem verbunden. Ein Rejektauslaß 18 und ein Gutstoffauslaß 20
sind konzentrisch am Auslaufende 14b der Trennkammer angeordnet. Der
Gutstoffauslaß 20 führt zu einer Gutstoffdüse 22, deren Achse entweder parallel oder
rechtwinkelig zur Längsachse A der Trennkammer 14 sein kann. In ähnlicher Weise
führt der Rejektauslaß 18 zu einer Rejektdüse 24, welche zur Längsachse A ähnlich
angeordnet sein kann.1 shows a device as a preferred embodiment of the
present invention with
Das Gehäuse 12 hat ein Einlaufteil 12a, welches vom Einlaufende 14a der Trennkammer
zum Mittelbereich 26 reicht und ein Auslaufteil 12b, welches vom Mittelbereich zum
Auslaufende 14b der Trennkammer führt. Der Durchmesser der Trennkammer 14 im
Einlaufteil 12a nimmt allmählich vom Einlaufende 14a zum Mittelbereich 26 zu. Der
Durchmesser der Trennkammer im Auslaufteil 12b nimmt allmählich vom
Mittelbereich 26 zum Auslaufende 14 b ab. The
Einlauf- und Auslaufteil 12a und 12b werden durch Kegelstümpfe gebildet, welche mit
ihrem größeren Durchmesser im Mittelbereich miteinander verbunden sind und bei
denen sich der Durchmesser linear ändert.Inlet and
Die Faserstoffsuspension tritt am Einlaufende 14a in die Trennkammer tangential durch
den Einlauf 16 ein, wobei sich eine freie Wirbelströmung in der Trennkammer bildet.
Die Faserstoffsuspension bewegt sich in Längsrichtung zum Auslaufende 14b, wobei sie
zuerst das Einlaufteil 12a und dann das Auslaufteil 12b passiert. Die Schwerfraktion
der Faserstoffsuspension wird die Trennkammer 14 durch den Gutstoffauslaß 20 und die
damit verbundene Gutstoffdüse 22 verlassen. Die Leichtfraktion der
Faserstoffsuspension wird die Trennkammer durch den Rejektauslaß 18 und die damit
verbundene Rejektdüse 24 verlassen.The fibrous suspension passes tangentially into the separation chamber at the
Die oben beschriebene Ausführung des Gehäuses und der Trennkammer hat zu einer Verbesserung der Wirksamkeit im Vergleich zu konventionellen Hydrozyklonen geführt, bei denen die Trennkammer entweder zylindrische Einlaufteile oder Trennkammern mit Durchmessern aufweist, die zum Auslaufende konstant kleiner werden.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.
Eine spezielle Eigenschaft der vorliegenden Erfindung ist die Möglichkeit, den Verlust an nützlichen Papierfasern im Rejektauslaß zu reduzieren. Außerdem kann ein höherer Durchsatz bei vorgegebener Druckdifferenz zwischen Einlauf und Gutstoffauslaß ermöglicht werden. Diese Vorteile sind erklärbar aus einer Strömung durch die Vorrichtung mit einem stabileren Wirbel und einem gerade ausgerichteten Kern.A special feature of the present invention is the possibility of loss to reduce useful paper fibers in the reject outlet. In addition, a higher one Throughput at a given pressure difference between the inlet and the accept outlet be made possible. These benefits can be explained from a flow through the Device with a more stable vertebra and a straight core.
Fig. 2 ist ein Schnitt, ähnlich gelegt wie in Fig. 1, welcher eine andere Ausführungsform
des Erfindungsgegenstandes zeigt, bei dem Einlaufteil 112 a und Auslaufteil 112 b des
Gehäuses 112 kurvenförmig sind, um eine allmähliche nicht lineare Änderung der
Durchmesser der Trennkammer 14 zu erzeugen.Fig. 2 is a section similar to Fig. 1, which shows another embodiment
of the subject matter of the invention shows in the
Fig. 3 stellt eine andere Ausführungsform der Erfindung dar, bei der Einlauf- und
Auslaufteil 212 a und 212 b verschiedene Kurvenformen haben, wobei wiederum nicht
lineare Änderungen der Durchmesser der Trennkammer 14 vorliegen.Fig. 3 shows another embodiment of the invention, in the inlet and
Auch wenn die in den Fig. 1 bis 3 gezeigten Ausführungsformen unterschiedliche Gestaltung haben, haben sie doch ein gemeinsames Merkmal, nämlich daß der Durchmesser der Trennkammer im Mittelbereich größer ist im Vergleich zu den Durchmessern jeweils am Einlauf- oder Auslaufende.Even if the embodiments shown in 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.
Sowohl diese gezeigten, als auch Variationen davon werden durch die Erfindung erfaßt, die durch die Ansprüche beschrieben sind.Both these shown and variations thereof are covered by the invention, described by the claims.
Claims (5)
- Device for separating a light fraction of a suspension of fibrous material from a heavy fraction of the suspension of fibrous material, which device has a tubular housing (12) of circular cross-section, which forms a separating chamber (14) extending in the longitudinal direction from the inlet end (14a) to the outlet end (14b), the housing (12) having an inlet (16) at the inlet end (14a) for the tangential introduction of the stream of fibrous material suspension into the housing (12) in order to generate an eddy flow along the length of the separating chamber (14) in the direction of the outlet end (14b), the eddy flow bringing about a separation effect, which separates the relatively light fraction from a relatively heavy fraction, the housing (12) having at least two outlets at the outlet end (14b), one of which is so arranged that the relatively light fraction can emerge therefrom and the other outlet is so arranged that the relatively heavy fraction can emerge therefrom, characterised in that the diameter of the separating chamber (14) gradually increases from the inlet end (14a) to a middle region (26) and gradually decreases from the middle region (26) to the outlet end (14b).
- Device according to claim 1, characterised in that the changes in diameter are linear.
- Device according to claim 1, characterised in that the changes in diameter of the separating chamber (14) are non-linear.
- Device according to claim 1, characterised in that the housing is defined by two hollow frustoconi, which are joined together in the middle region (26).
- Hydrocyclone for separating a light fraction of a suspension of fibrous material from a heavy fraction of this suspension, having the following parts:a separating chamber (14),an inlet (16) at the inlet end (14a) of the separating chamber (14) in order to introduce the fibrous material suspension into the separating chamber (14) and at least two outlets, which are disposed at the outlet end (14b), opposite the inlet end (14a), of the separating chamber (14) in order to discharge the separated fractions of the fibrous material suspension, characterised in that the diameter of the separating chamber (14) increases gradually from the inlet end (14a) to a middle region (26) of the separating chamber (14) and then decreases gradually from the middle region (26) of the separating chamber (14) towards the outlet end (14b).
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 EP0882514A1 (en) | 1998-12-09 |
| EP0882514B1 true EP0882514B1 (en) | 2002-01-30 |
Family
ID=25352043
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP98108738A Expired - Lifetime EP0882514B1 (en) | 1997-06-04 | 1998-05-14 | Separation device |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US5899342A (en) |
| EP (1) | EP0882514B1 (en) |
| CA (1) | CA2235011C (en) |
| DE (1) | DE59802941D1 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU767862B2 (en) * | 1999-05-10 | 2003-11-27 | Mineral Processors (Wa) Pty Ltd | Densifier |
| US6116429A (en) * | 1999-06-23 | 2000-09-12 | Kirsgalvis; Richard D. | Filter housing extension kit |
| EP3238829A1 (en) * | 2016-04-25 | 2017-11-01 | Bosch Termoteknik Isitma ve Klima Sanayi Ticaret Anonim Sirketi | Cyclone separator |
| CN106166518A (en) * | 2016-08-22 | 2016-11-30 | 江苏金点环保科技有限公司 | A kind of dynamic hydrocyclone |
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|---|---|---|---|---|
| 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 |
| US3620370A (en) * | 1969-06-02 | 1971-11-16 | Rue E Swayze | Ore concentrator |
| DE2622880C3 (en) * | 1976-05-21 | 1981-05-14 | Amberger Kaolinwerke Gmbh, 8452 Hirschau | Process for fractionating suspended solids by means of hydrocyclones, as well as an arrangement for carrying out the process |
| SE406713B (en) * | 1977-07-18 | 1979-02-26 | Celleco Ab | HYDROCYCLOSE SEPARATOR WITH SLIDES IN THE CIRCULAR CYLINDRICAL PART OF THE SEPARATION CHAMBER |
| US4394138A (en) * | 1979-01-19 | 1983-07-19 | Schilling John R | Diverging vortex separator |
| JPS55114364A (en) * | 1979-02-26 | 1980-09-03 | Mitsui Eng & Shipbuild Co Ltd | Axial flow type cyclon |
| CS206478B1 (en) * | 1979-12-12 | 1981-06-30 | Rudolf Kmeco | Vertical turbulent sorter for sorting paper stock,especially for sorting foamed polystyrene granules |
| DE3024837C2 (en) * | 1980-07-01 | 1985-07-04 | Ishikawajima-Harima Jukogyo K.K., Tokio/Tokyo | Particle separator with vertical axis |
| DE8521904U1 (en) * | 1985-07-30 | 1985-12-05 | Czernawski, Norbert, 6140 Bensheim | Centrifugal chamber, for ejecting non-atomized liquid particles from centric eddies |
| DE59400653D1 (en) * | 1993-04-02 | 1996-10-24 | Voith Gmbh J M | Flotation facility |
| DE4426159A1 (en) * | 1994-07-22 | 1994-12-08 | Voith Gmbh J M | Flotation device |
-
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 DE DE59802941T patent/DE59802941D1/en not_active Expired - Fee Related
- 1998-05-14 EP EP98108738A patent/EP0882514B1/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| CA2235011C (en) | 2003-10-14 |
| CA2235011A1 (en) | 1998-12-04 |
| DE59802941D1 (en) | 2002-03-14 |
| US5899342A (en) | 1999-05-04 |
| EP0882514A1 (en) | 1998-12-09 |
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