DE102010029826A1 - Screw extruder for separation of liquid out of suspension, preferably slurry or fibrous material, comprises screw shaft, which is rotated in cylindrical shell and presses suspension through annular gap from inlet opening to outlet opening - Google Patents
Screw extruder for separation of liquid out of suspension, preferably slurry or fibrous material, comprises screw shaft, which is rotated in cylindrical shell and presses suspension through annular gap from inlet opening to outlet opening Download PDFInfo
- Publication number
- DE102010029826A1 DE102010029826A1 DE102010029826A DE102010029826A DE102010029826A1 DE 102010029826 A1 DE102010029826 A1 DE 102010029826A1 DE 102010029826 A DE102010029826 A DE 102010029826A DE 102010029826 A DE102010029826 A DE 102010029826A DE 102010029826 A1 DE102010029826 A1 DE 102010029826A1
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- DE
- Germany
- Prior art keywords
- suspension
- screw
- outlet opening
- annular gap
- screw press
- 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- Withdrawn
Links
- 239000000725 suspension Substances 0.000 title claims abstract description 36
- 239000007788 liquid Substances 0.000 title claims abstract description 8
- 239000002657 fibrous material Substances 0.000 title abstract 2
- 238000000926 separation method Methods 0.000 title abstract 2
- 239000002002 slurry Substances 0.000 title abstract 2
- 230000001737 promoting effect Effects 0.000 claims description 2
- 239000010802 sludge Substances 0.000 claims description 2
- BUHVIAUBTBOHAG-FOYDDCNASA-N (2r,3r,4s,5r)-2-[6-[[2-(3,5-dimethoxyphenyl)-2-(2-methylphenyl)ethyl]amino]purin-9-yl]-5-(hydroxymethyl)oxolane-3,4-diol Chemical compound COC1=CC(OC)=CC(C(CNC=2C=3N=CN(C=3N=CN=2)[C@H]2[C@@H]([C@H](O)[C@@H](CO)O2)O)C=2C(=CC=CC=2)C)=C1 BUHVIAUBTBOHAG-FOYDDCNASA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000008719 thickening Effects 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B9/00—Presses specially adapted for particular purposes
- B30B9/02—Presses specially adapted for particular purposes for squeezing-out liquid from liquid-containing material, e.g. juice from fruits, oil from oil-containing material
- B30B9/12—Presses specially adapted for particular purposes for squeezing-out liquid from liquid-containing material, e.g. juice from fruits, oil from oil-containing material using pressing worms or screws co-operating with a permeable casing
- B30B9/16—Presses specially adapted for particular purposes for squeezing-out liquid from liquid-containing material, e.g. juice from fruits, oil from oil-containing material using pressing worms or screws co-operating with a permeable casing operating with two or more screws or worms
- B30B9/163—Presses specially adapted for particular purposes for squeezing-out liquid from liquid-containing material, e.g. juice from fruits, oil from oil-containing material using pressing worms or screws co-operating with a permeable casing operating with two or more screws or worms working in different chambers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/11—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with bag, cage, hose, tube, sleeve or like filtering elements
- B01D29/31—Self-supporting filtering elements
- B01D29/35—Self-supporting filtering elements arranged for outward flow filtration
- B01D29/356—Self-supporting filtering elements arranged for outward flow filtration open-ended, the arrival of the mixture to be filtered and the discharge of the concentrated mixture are situated on both opposite sides of the filtering element
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/50—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with multiple filtering elements, characterised by their mutual disposition
- B01D29/52—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with multiple filtering elements, characterised by their mutual disposition in parallel connection
- B01D29/54—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with multiple filtering elements, characterised by their mutual disposition in parallel connection arranged concentrically or coaxially
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/62—Regenerating the filter material in the filter
- B01D29/64—Regenerating the filter material in the filter by scrapers, brushes, nozzles, or the like, acting on the cake side of the filtering element
- B01D29/6469—Regenerating the filter material in the filter by scrapers, brushes, nozzles, or the like, acting on the cake side of the filtering element scrapers
- B01D29/6476—Regenerating the filter material in the filter by scrapers, brushes, nozzles, or the like, acting on the cake side of the filtering element scrapers with a rotary movement with respect to the filtering element
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/121—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering
- C02F11/125—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering using screw filters
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Paper (AREA)
Abstract
Description
Die Erfindung betrifft eine Schneckenpresse zum Abtrennen von Flüssigkeit aus einer Suspension, insbesondere Schlamm oder Faserstoff, mit wenigstens einer, in einem vorzugsweise zylindrischen Mantel rotierenden Schneckenwelle, wobei die Suspension durch einen zwischen dem Mantel und der Schneckenwelle gebildeten Ringspalt von wenigstens einer Einlass- zu einer Auslassöffnung gepresst wird und im Bereich des Ringspaltes Flüssigkeitsabführöffnungen vorgesehen sind.The invention relates to a screw press for separating liquid from a suspension, in particular sludge or pulp, with at least one, rotating in a preferably cylindrical shell screw shaft, wherein the suspension by an annular gap formed between the shell and the screw shaft from at least one inlet Outlet opening is pressed and provided in the region of the annular gap Flüssigkeitsabführöffnungen.
Derartige Entwässerungsvorrichtungen sind seit langer Zeit bekannt und werden mit Erfolg bei der Eindickung von Faserstoffsuspensionen in Maschinen zur Herstellung einer Faserstoffbahn verwendet.Such dewatering devices have been known for a long time and are used successfully in the thickening of pulp suspensions in machines for producing a fibrous web.
Um die Stoffbehandlung zu unterstützen wird dabei oft Dampf zugegeben. Der Dampfdruck liegt dann austragsseitig in der Schneckenpresse an.Steam is often added to aid fabric treatment. The vapor pressure then lies on the discharge side in the screw press.
Für eine hohe Stoffdichte am Auslass ist in der Regel aber auch ein hoher Druck erforderlich, was zu einer erheblichen Belastung der Lagerungen und der anderen Bauteile in der Schneckenpresse führt.For a high consistency at the outlet but usually also a high pressure is required, which leads to a significant load on the bearings and the other components in the screw press.
Die Aufgabe der Erfindung ist es daher die Belastung der Bauteile insbesondere der Lagerung der Schneckenpresse zu vermindern, ohne die Effizienz der Entwässerung zu beeinträchtigen.The object of the invention is therefore to reduce the load on the components in particular the storage of the screw press, without affecting the efficiency of the drainage.
Erfindungsgemäß wurde die Aufgabe dadurch gelöst, dass mehrere Schneckenwellen die Suspension von jeweils wenigstens einer separaten Einlassöffnung zu einer gemeinsamen Auslassöffnung fördern. Im Idealfall hebt sich der Kraftfluß zur Auslassöffnung hin annähernd auf. Dadurch verringert sich die axiale Belastung der Lagerung der Schneckenwellen erheblich.According to the invention, this object is achieved in that a plurality of screw shafts promote the suspension of at least one separate inlet opening to a common outlet opening. Ideally, the power flow to the outlet opening almost rises. This considerably reduces the axial load on the bearing of the worm shafts.
Dabei sollten zumindest zwei Schneckenwellen etwa entgegengerichtete Förderrichtungen aufweisen.At least two screw shafts should have approximately opposite directions of conveyance.
Hinsichtlich eines axialen Kräfteausgleichs und damit einer Minimierung der Lagerbelastung ist es jedoch von besonderem Vorteil, wenn die Schneckenpresse zwei, vorzugsweise auf einer gemeinsamen Achslinie liegende und gegeneinander fördernde Schneckenwellen besitzt.With regard to an axial balance of forces and thus a minimization of the bearing load, however, it is of particular advantage if the screw press has two, preferably on a common axis line and mutually promoting screw shafts.
Dabei kann der Maschinenaufwand noch erheblich dadurch reduziert werden, dass die beiden Schneckenwellen von einem gemeinsamen Antrieb angetrieben werden. Zur Minimierung des Herstellungsaufwandes kann es hierbei von Vorteil sein, wenn beide Schneckenwellen zusammengefaßt, d. h. einstückig ausgeführt werden.The machine cost can still be significantly reduced by the fact that the two worm shafts are driven by a common drive. To minimize the production costs, it may be advantageous if both screw shafts combined, d. H. be made in one piece.
Eine bessere Steuerung der Suspensionsströme zur gemeinsamen Auslassöffnung ist allerdings möglich, wenn beide Schneckenwellen separate Antriebe haben.However, better control of the suspension flows to the common outlet opening is possible if both worm shafts have separate drives.
Zum gleichmäßigen Zuführen von Faserstoff ist es des Weiteren vorteilhaft, wenn wenigstens einer Schneckenwelle mehrere Einlassöffnungen zugeordnet sind.For the uniform feeding of pulp, it is furthermore advantageous if at least one worm shaft is associated with a plurality of inlet openings.
Zur Steuerung der Suspensionsströme zur Auslassöffnung ist es von Vorteil, wenn die Suspension von einer steuerbaren Pumpe oder über eine Überlaufschnecke oder über ein steuerbares Ventil zur Einlassöffnung gefördert wird und/oder der Druck der Suspension vor der gemeinsamen Auslassöffnung über Gegendruckelemente insbesondere über Klappen, Bremsklötze oder Bremsringe veränderbar ist.To control the suspension flows to the outlet opening, it is advantageous if the suspension is conveyed from a controllable pump or via an overflow screw or via a controllable valve to the inlet opening and / or the pressure of the suspension in front of the common outlet opening via counter-pressure elements, in particular via flaps, brake pads or Brake rings is changeable.
Eine Veränderung des Drucks der Suspension vor der Auslassöffnung ist insbesondere über eine Veränderung der Dicke des Ringspaltes in diesem Bereich oder über eine Behinderung der Bewegung der Suspension möglich.A change in the pressure of the suspension in front of the outlet opening is possible, in particular, via a change in the thickness of the annular gap in this area or via a hindrance to the movement of the suspension.
Dabei ist es vorteilhaft, wenn der Druck der Suspension mehrerer Schneckenwellen, welche die Suspension zu einem Ausgang fördern, separat steuerbar ist.It is advantageous if the pressure of the suspension of several screw shafts, which promote the suspension to an outlet, is separately controllable.
Im Ergebnis vermindert sich nicht nur die axiale Belastung der Lager der Schneckenwellen sondern es sinkt auch der Aufwand für eine Abdichtung zur Vermeidung eines Dampfaustritts im Bereich der Auslassöffnung, weil die Abdichtung über den entwässerten Stoff selbst erfolgt.As a result, not only reduces the axial load of the bearings of the screw shafts but it also reduces the cost of a seal to prevent steam leakage in the region of the outlet opening, because the seal is made on the dewatered material itself.
Nachfolgend soll die Erfindung an mehreren Ausführungsbeispielen näher erläutert werden. In der beigefügten Zeichnung zeigt:The invention will be explained in more detail below with reference to several exemplary embodiments. In the attached drawing shows:
Die hier behandelten Schneckenpressen dienen der Entwässerung einer Faserstoffsuspension, wie sie in Maschinen zur Herstellung einer Faserstoffbahn Verwendung findet.The screw presses treated here are used for dewatering a pulp suspension, as used in machines for producing a fibrous web.
Die Schneckenpressen bestehen aus zwei Schneckenwellen
Dabei wird die Schneckenwelle
Am austrittsseitigen Ende der Schneckenwelle
Zur Abfuhr der Flüssigkeit haben der Mantel
Beim Drehen der Schneckenwelle
Nach dem Gegendruckelement
Die Schneckenwelle
Wesentlich ist bei allen Ausführungen, dass mehrere Schneckenwellen
Dies führt dazu, dass sich die Lagerbelastungen bei den Schneckenwellen
Zur konstruktiven Vereinfachung sind die Trommeln
Außerdem wird es durch die Kopplung bzw. einstückige Ausführung der Trommeln
Um dennoch die Suspensionsströme steuern zu können, werden diese über steuerbare Ventile
Wie in
Im Gegensatz hierzu sind die Schneckenwellen
ZITATE ENTHALTEN IN DER BESCHREIBUNG QUOTES INCLUDE IN THE DESCRIPTION
Diese Liste der vom Anmelder aufgeführten Dokumente wurde automatisiert erzeugt und ist ausschließlich zur besseren Information des Lesers aufgenommen. Die Liste ist nicht Bestandteil der deutschen Patent- bzw. Gebrauchsmusteranmeldung. Das DPMA übernimmt keinerlei Haftung für etwaige Fehler oder Auslassungen.This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.
Zitierte PatentliteraturCited patent literature
- EP 1586439 [0022] EP 1586439 [0022]
Claims (8)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102010029826A DE102010029826A1 (en) | 2010-06-09 | 2010-06-09 | Screw extruder for separation of liquid out of suspension, preferably slurry or fibrous material, comprises screw shaft, which is rotated in cylindrical shell and presses suspension through annular gap from inlet opening to outlet opening |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102010029826A DE102010029826A1 (en) | 2010-06-09 | 2010-06-09 | Screw extruder for separation of liquid out of suspension, preferably slurry or fibrous material, comprises screw shaft, which is rotated in cylindrical shell and presses suspension through annular gap from inlet opening to outlet opening |
Publications (1)
Publication Number | Publication Date |
---|---|
DE102010029826A1 true DE102010029826A1 (en) | 2011-12-15 |
Family
ID=45020035
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE102010029826A Withdrawn DE102010029826A1 (en) | 2010-06-09 | 2010-06-09 | Screw extruder for separation of liquid out of suspension, preferably slurry or fibrous material, comprises screw shaft, which is rotated in cylindrical shell and presses suspension through annular gap from inlet opening to outlet opening |
Country Status (1)
Country | Link |
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DE (1) | DE102010029826A1 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109179947A (en) * | 2018-11-13 | 2019-01-11 | 文露 | A kind of urban construction sludge solid-liquid separator |
IT202100002369A1 (en) * | 2021-02-03 | 2022-08-03 | Greengo S R L | DEHYDRATION AND DRYING DEVICE FOR SLUDGE FROM WASTE WATER PURIFICATION AND RELATED TREATMENT PROCEDURE |
DE102021126120A1 (en) | 2021-10-08 | 2023-04-13 | Voith Patent Gmbh | screw press |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1586439A1 (en) | 2004-04-15 | 2005-10-19 | Andritz AG | screw press for extracting liquids from solid/liquid mixtures, in particular fiber suspensions |
-
2010
- 2010-06-09 DE DE102010029826A patent/DE102010029826A1/en not_active Withdrawn
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1586439A1 (en) | 2004-04-15 | 2005-10-19 | Andritz AG | screw press for extracting liquids from solid/liquid mixtures, in particular fiber suspensions |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109179947A (en) * | 2018-11-13 | 2019-01-11 | 文露 | A kind of urban construction sludge solid-liquid separator |
IT202100002369A1 (en) * | 2021-02-03 | 2022-08-03 | Greengo S R L | DEHYDRATION AND DRYING DEVICE FOR SLUDGE FROM WASTE WATER PURIFICATION AND RELATED TREATMENT PROCEDURE |
DE102021126120A1 (en) | 2021-10-08 | 2023-04-13 | Voith Patent Gmbh | screw press |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
R119 | Application deemed withdrawn, or ip right lapsed, due to non-payment of renewal fee |
Effective date: 20140101 |