EP0685325B1 - Vorrichtung zum Trennen des Flüssiganteils vom Feststoffanteil von Zweiphasensystemen - Google Patents
Vorrichtung zum Trennen des Flüssiganteils vom Feststoffanteil von Zweiphasensystemen Download PDFInfo
- Publication number
- EP0685325B1 EP0685325B1 EP95106675A EP95106675A EP0685325B1 EP 0685325 B1 EP0685325 B1 EP 0685325B1 EP 95106675 A EP95106675 A EP 95106675A EP 95106675 A EP95106675 A EP 95106675A EP 0685325 B1 EP0685325 B1 EP 0685325B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- filtering
- screw conveyor
- filter
- filtering element
- filtering elements
- 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
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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
- B30B9/125—Control arrangements
-
- 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
-
- 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
- B30B9/26—Permeable casings or strainers
Definitions
- the invention relates to a device for separating the liquid portion of the solids content of finely dispersed mineral Slurries, in particular a ceramic slip, with a screw and with the screw surrounding the radial distance and cylindrical along the screw Filter means that with the screw a conveyor channel for the Limit slip, which is via a material feed on one End of the filter screw press fed and after promotion through the channels of the rotating snail at the other end than Solid discharge is discharged through a mouthpiece, the the liquid component flowing through the filter medium via a filtrate discharge is dissipated.
- a device according to the preamble of claim 1 is already known (EP-B 0 138 920), in which the Filter medium surrounding the screw is arranged in a housing are.
- the filter medium surfaces facing the screw The filter media contained in the housing are to protect against Abrasion covered with an abrasion-resistant protective grille.
- In the mesh of this grid forms a stationary one Filter cake, which has a significant flow resistance for represents the filtrate drain. This resistance is all the more smaller, the smaller the thickness of the grid and the smaller the area covered by the bars Filter medium surface is.
- Thickness of the grid and the area covered by the grid not be reduced arbitrarily, so that one Reduction of the resistance for the filtrate drain set limits are.
- disadvantageous flow resistance for the filtrate drain results from the use of the protective grille a structural effort of such a known filter screw press.
- Filter screw press is in Japanese patent JP 55051000. Here, too, they are in one housing absorbed filter media to protect against abrasion on your side facing the snail through an inner tube protected. However, this inner tube is in one Low pressure and a high pressure area divided, the High pressure area more wear-resistant and overall higher Strength is designed. However, this does not change anything The fact that the disadvantages described above of a protective grille occur.
- the object of the invention is to overcome the disadvantage of the prior art Fix technology, especially a device for separation to create the liquid portion from the solid portion, which is structurally is simply constructed and without the need for additional Protective grille for the filter media gets along.
- the invention is based on the knowledge that from the beginning to the two-phase system still over the middle of the screw channel is liquid to soft plastic, so that in the gap between Outside diameter of the screw and inside diameter of the filter cylinder a filter cake resting on the filter medium forms, the solids content higher than that of the medium is in the screw channel, so that due to the resting filter cake the filter media are protected against friction.
- filter media which are not designed for high abrasion resistance must or can additional protective measures of the filter medium by connecting protective grids and the like.
- the device bill being in the first filter medium section
- Filter media with lower abrasion resistance can be, however, in the second subsequent Filter media section filter media can be used, which itself are characterized by a higher abrasion resistance.
- the filter means of the first filter section stand out through the finest pores close to the filter medium surface, the pore system expanding into the filter medium. As a result, fine particles are largely on the surface of the filter medium captured, whereas in the pore system fine particles penetrating the filter medium without further ado can happen. This will largely blockages avoided.
- Fine-pored sintered sieve mesh and porous silicon carbide are Examples of those required in the respective sections Filter media. Of course, others can suitable filter media are used.
- the division according to the invention is particularly advantageous of the filtering screw cylinder into a number of self-supporting elements with a correspondingly smaller axial Extension of the filter elements in which the filter media in undivided steel cylinders are well attached, which makes the very high forces occurring during processing well absorbed can be.
- the filter elements are expediently designed to be self-supporting, the filter media either in a massive Steel cylinders are welded in or a steel cylinder over the filter medium is shrunk, which is particularly the case with Use of ceramic filter media is the case.
- This eliminates the self-supporting property of the filter elements Additional housing required.
- the filter elements are only connected by means of tie rods fixed and otherwise outside by a frame against rotation secured. This results in an overall very simple easy assembly of a filter screw press.
- the device of Figure 1 is through a filter screw press formed, which has a conventional screw 1, which within one by side by side filter elements 2 and 3 formed housing and arranged at 4 is rotatably mounted.
- rotated screw 1 serves to promote ceramic slip used for the purpose of separating the liquid portion of the solid content by the between the Screw 1 and the filter elements 2 and 3 formed screw channel is transported.
- the slip is at one end the filter screw press via the material feed 6 Screw channel 5 fed and leaves at the other end Press over the mouthpiece 7.
- At 8 there is a discharge opening shown, which serves as a bypass and in more detail below is explained.
- the filter elements 2 of the first filter medium section extend over at least half of the part of the screw that is effective for slurry extraction.
- filter elements 2 and 3 are four filter elements 2, on which three filter elements of the Connect the second filter medium section.
- the along the Screw axis arranged cylindrically arranged side by side Filter elements 2 and 3 are next to each other Seals 9 of conventional design sealed.
- the filter elements 2 and 3 are self-supporting, so that an additional There is no housing for the filter screw press.
- the filter screw press comprises a flushing water supply line 10, via which, via a water pump 11 and a control valve 12, flushing water can be supplied to the individual filter elements with the interposition of valves V 1 to V n .
- a further rinsing water circuit is formed by the water line 13 and the valve 14, which opens into the filter screw press at 15, and by the rinsing water line 15a and the control valve 16, the line 15a at the mouth end at 16a discharging the rinsing water from the screw channel.
- a sedimentation basin for the rinsing water is identified by 17, a line 18 also opening into the basin 17, which leads away from the bypass 8.
- tie rods are shown schematically, which serve to fix the filter elements 2 and 3.
- FIGS. 2 to 5 show the structure of the filter elements 2 of the first filter medium section.
- Figure 2 shows this Filter means 21 of the first filter means section, which preferably from several layers of one above the other Sieve fabrics is formed, which are sintered together.
- the porous system of the filter medium 21 results, which is otherwise circular cylindrical.
- the filter medium can also be sintered together from a porous sintered metal cylinder, in particular sintered steel be educated.
- the porous cylindrical filter media 22 of the second filter media section are made of ceramic material formed, in particular silicon carbide or silicon nitride.
- the sintered sieve mesh or sintered steel cylinder for the first one and the silicon carbide or silicon nitride cylinders for the second filter medium sections are each in a solid Steel cylinders 23a and 23b added, which in FIGS and 7 is shown.
- the sintered sieve fabrics or sintered steel cylinders are in the Steel cylinder 23a welded, as shown in Figure 5.
- the silicon carbide or silicon nitride cylinders according to FIG. 6 are ground to exact dimensions to form the filter element, so that the steel cylinder 23b is shrunk thermally can be.
- the composite filter element is shown in Figure 9.
- the filter element according to FIGS. 6 to 9 are the Select tolerances of dimensions so that after cooling of the steel cylinder and at a filtration pressure of 120 bar the cylindrical filter medium (silicon carbide or silicon nitride) in the circumferential direction on average is tension-free. If the pressure in the screw channel or in The filter element assumes the value zero, the cylindrical one Filter medium through the shrunk-on steel jacket under high Circumferential pressure.
- the wall thickness of the cylindrical The filter medium is selected so that the silicon carbide or silicon nitride material is not overstressed becomes. Because the materials mentioned have high compressive stresses, however can only absorb low tensile stresses, it only succeeds on the way shown, filter elements made of these materials to create that absorb high filtration pressures. In this case, the cylindrical design is particularly important the steel cylinder as a full jacket, because in use half shells do not have a sufficiently uniform pressure load on the circumference of the cylindrical filter element can be guaranteed. This could break it of the filter elements.
- the filter elements 2 and 3, as shown in FIGS. 2 to 5 and 6 to 9 are shown, are self-supporting and do not need to be supported from the outside by a special housing to become. You will only be on an appropriate one Arranged frame, which in Figures 4 and 8 with 27th is marked.
- This frame 27 has a recess 28 in which an extension of the steel cylinder engages, whereby the frame 27 onto the filter medium surface torque applied by the rotating screw inside records.
- the filter elements have a limited axial length, whereby in the preferred embodiment, the length of the filter elements is in the range of 100 to 200 mm.
- the filter media are expediently sintered together Screen fabrics or sintered steel in known pore structures realized, with the finest pores dense on the filter medium surface, where the filter cake is forms. From there, the pore system expands in the respective filter medium. This makes fine particles largely held onto the filter medium surface. Finest particles that penetrate the filter medium most likely the expanding channels pass the filter medium completely and leave with the filtrate. This significantly reduces the possibility of constipation.
- the mouthpiece 7 or the bypass 8 for the drainage of the plastic material on the mouthpiece side End of the screw channel opened to the flow resistance for the outflow of the plastic material from the screw channel greatly reduce.
- the snail continues to rotate and the slip flow via the material feed 6 is also maintained.
- the rotating screw is thus able the plastic material largely through its promotional effect to be removed from the screw channel, which takes place as long as to slip from material feed 6 to the outlet strikes at mouthpiece 7 or bypass 8.
- the Slip supply 6 shut off and water tap 14 opened so that water is fed into the filter screw press becomes.
- the water now flows through the snail channels and now leaves the housing of the filter screw press instead of slip via the mouthpiece 7 or the bypass 8. This effectively flushes the screw channel, largely cleaned of slip and plastic material becomes.
- the rotational movement of the snail supports the rinsing process.
- the rinsing process is finished when Slips and remains of plastic material from the snail channel have been washed out.
- the flushing water flow would be used for flushing with constant flow direction decrease after a short time because the fine particles that clog the pore system and through the flushing water flow first be detached from their positions, after short distance again in any corner of the pore system fix and lead to new constipation. This is avoided by a repeated reversal of the direction of the flushing water flow, the fine particles from very angled pore systems transported out, especially with filter media made of porous ceramics.
- This rinsing process of the filter elements is carried out a few times rinsing of the screw channel with tap water is interrupted, as previously described to remove residues of the dispers plastic material that is still from the surface of the Have loosened the filter medium to convey it out of the screw channel.
- Filter elements with porous ceramics can only in diameter can be enlarged to a limited extent. There are already diameters from 400 mm hardly manageable manufacturing technology Problems with editing by grinding and accordingly high costs.
- the invention for this section the use of several filter screws proposed in parallel.
- the first filter section 29 a filter screw with large Diameter.
- the second filter section 30 is through several filter screws with a smaller one working in parallel Diameter formed with respect to the first filter section 29.
- there are four working in parallel Filter screws 31 are provided.
- the Diameter of the filter screws 31 of the second filter section 30 expediently a quarter of the diameter the filter screw 32 of the first filter section 29.
- Die Filter screws 31 feed the extrudate into a common one Mouthpiece 33, from which only one strand 34 is plastic Mass emerges.
- the opening cross section of the mouthpiece 33 is controlled in a known manner so that in front of the mouthpiece there is a constant predetermined pressure.
- the common Rotation frequency of the screws of the second filter section 30 is thus on the rotational frequency of the worm 32 of the first section voted that in the transition from section 29 to section 30 the concentration is established in the two-phase system, which makes it necessary to change the filter medium.
- each Filter screws 31 designated.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Filtration Of Liquid (AREA)
- Filtering Materials (AREA)
Description
Claims (18)
- Vorrichtung zum Trennen des Flüssiganteils vom Feststoffanteil von fein dispersen mineralischen Schlämmen, insbesondere eines keramischen Schlickers, mit einer Schnecke (1) und mit die Schnecke umgebenden und längs der Schneckenachse angeordneten zylindrischen Filtermitteln, die mit der Schnecke (1) einen Förderkanal (5) für den Schlicker begrenzen, der über eine Materialzuführung (6) an einem Ende der Vorrichtung der Schnecke (1) zugeführt wird und nach Forderung durch die rotierende Schnecke am anderen Ende als Feststoffaustrag über ein Mundstück (7) abgeführt wird, wobei der das Filtermittel durchströmende Flüssiganteil über zu einem Filtratabzug führende Kanäle (24, 25) abgeführt wird,
gekennzeichnet durch einen zweistufigen Aufbau der Vorrichtung mit einem ersten Filtermittelabschnitt für den Aufbau einer ruhenden Filterkuchenschicht unmittelbar auf dem Filtermittel (21) mit einem deutlich höheren Feststoffgehalt als der im Schneckenkanal (5) geförderte Schlicker, der sich von der Materialzuführung (6) längs der Schneckenachse erstreckt, und mit einem zweiten daran anschließenden Filtermittelabschnitt, der aus Filtermitteln (22) aufgebaut ist, die eine höhere Abriebfestigkeit als die Filtermittel (21) des ersten Filtermittelabschnittes besitzen und die ebenfalls wie die Filtermittel des ersten Filtermittelabschnitts in unmittelbarem Kontakt mit den zu trennenden Schlämmen stehen, wobei die beiden Filtermittelabschnitte jeweils aus nebeneinander angeordneten selbsttragenden Filterelementen (2, 3) aufgebaut sind, von denen jedes Filterelement aus einem massiven Stahlzylinder (23) mit einem darin aufgenommenen zylindrischen Filtermittel (21) bzw. (22) gebildet ist, so daß innerhalb eines jeden Filterelementes (2, 3) und unabhängig von den benachbarten Filterelementen (2, 3) zwischen Stahlzylinder (23) und darin aufgenommenem Filtermittel (21, 22) Kanäle ausgebildet sind. - Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Filtermittel und zwar vorzugsweise die des ersten Filtermittelabschnittes (21) feinste Poren dicht an der der Schnecke (1) zugewandten Filtermitteloberfläche aufweisen, von wo aus sich die Porenkanäle in das Filtermittel (21) hinein erweitern.
- Vorrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Filtermittel (21) des ersten Filtermittelabschnittes aus mehreren Lagen von vorzugsweise zusammengesinterten, feinmaschigen Siebgeweben oder aus porösem Sintermetall und die Filtermittel (22) des zweiten Filtermittelabschnittes aus porösem Keramikmaterial, insbesondere aus Siliziumkarbid oder Siliziumnitrid gebildet sind.
- Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß der erste Filtermittelabschnitt sich vom Schlickereinlauf bis mindestens zur Mitte der Schnecke (1) erstreckt, vorzugsweise über einen Bereich, in dem der Feststoffgehalt des Schlickers 42 bis 60 Gewichtsprozent beträgt, vorzugsweise bis zu maximal 60 Gewichtsprozent, woran dann der zweite Filtermittelabschnitt anschließt.
- Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Filtermittel (21) des ersten Filtermittelabschnittes jeweils im Stahlzylinder (23) angeschweißt sind, und daß die Filterelemente (3) des zweiten Filtermittelabschnittes durch thermisches Aufschrumpfen des entsprechenden Stahlzylinders (23) auf das Filtermittel (22) gebildet sind.
- Vorrichtung nach Anspruch 5, dadurch gekennzeichnet, daß bei den Filterelementen (3) des zweiten Filtermittelabschnittes die Toleranzen der Abmessungen so gewählt sind, daß nach dem Abkühlen des Stahlzylinders (23) und bei einem Filtrationsdruck von etwa 120 bar im Schneckenkanal (5) das zylinderische Filtermittel (22) in Umfangsrichtung im Mittel spannungsfrei ist.
- Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Filterelemente (2, 3) eine axiale Erstreckung im Bereich von 100 bis 200 mm aufweisen.
- Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Kanäle des Filterelements (2, 3) aus vorzugsweise in einem Abstand von etwa 20 mm in Umfangsrichtung verlaufenden Kanäle (24) gebildet sind, die durch einen oder mehrere axial verlaufende Kanäle (25) verbunden sind, die zu einer oder mehreren Auslaufbohrungen (26) im Stahlzylinder (23) führen.
- Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Filterelemente (2, 3) auf einem längs der Schneckenachse angeordneten Rahmen (27) gegen Drehung gesichert angeordnet sind.
- Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß zwischen benachbarten zylinderischen Filterelementen (2, 3) umlaufende Dichtungen (9) angeordnet sind.
- Vorrichtung nach einem der vorhergehenden Ansprüche, gekennzeichnet durch ein Spülsystem, bei dem in einem ersten Arbeitstakt die Schneckenkanäle und in einem zweiten Arbeitstakt die Filterelemente (2, 3) gespült werden.
- Vorrichtung nach Anspruch 11, dadurch gekennzeichnet, daß die Spülung der Schneckenkanäle dadurch erfolgt, daß das Mundstück (7) oder ein am mundstückseitigen Ende der Schnecke (1) angeordneter Bypasss (8) vorzugsweise bei rotierender Schnecke (1) und fortdauerndem Schlickereintrag über die Materialzuführung (6) geöffnet wird bis Schlicker vom Einlauf bis zum Auslauf beim Mundstück (7) oder Bypass (8) durchschlägt, danach die Schlickerzufuhr unterbunden und Wasser am materialzuführseitigen Ende der Vorrichtung eingespeist wird.
- Vorrichtung nach Anspruch 11 oder 12, dadurch gekennzeichnet, daß die Spülung der Filterelemente (2, 3) dadurch erfolgt, daß nach Spülung des Schneckenkanals bei geschlossenem Mundstück (7), Bypass (8) und Schlickerzuführung (6) unter Druck stehendes Spülwasser ventilgesteuert in wechselnder Strömungsrichtung durch das Porensystem der Filterelemente (2, 3) geleitet wird.
- Vorrichtung nach einem der Ansprüche 1 bis 10 mit einem Spülsystem, dadurch gekennzeichnet, daß im laufenden Betrieb der Filterschneckenpresse ohne vorherige Spülung des Schneckenkanals Spülwasser unter höherem Druck, als er im Schneckenkanal herrscht, von der Spülwasserpumpe (11) über das Ventil (12) in Gegenrichtung zum Filtratstrom durch das Porensystem der Filterelemente geleitet wird, wobei das Ventil (12) nach einem vorgebbaren Zeittakt so gesteuert wird, daß während eines Spülvorganges jeweils mehrere Male auf ein Zeitintervall, in dem der Spülwasserstrom entgegengesetzt zum Filtratstrom durch die Filterelemente gepumpt wird, ein Zeitintervall folgt, in dem ein freier Filtratabfluß aus den Filterelementen eingestellt wird, so daß durch den hohen Innendruck im Zweiphasensystem im Schneckenkanal ein Flüssigkeitsstrom durch die Filterelemente in Richtung des Filtratstromes erfolgt.
- Vorrichtung nach einem der Ansprüche 11 bis 14, dadurch gekennzeichnet, daß der Spülvorgang durch Rotation der Schnecke (1) unterstützt wird.
- Vorrichtung nach einem der Ansprüche 11 bis 15, dadurch gekennzeichnet, daß die einzelnen Filterelemente (2, 3) nacheinander jeweils für sich gespült werden.
- Vorrichtung nach einem der Ansprüche 11 bis 16, dadurch gekennzeichnet, daß die Spülung der Filterelemente (2, 3) einige Male durch eine Spülung des Schneckenkanals unterbrochen wird.
- Vorrichtung nach einem der vorhergehenden Ansprüche,dadurch gekennzeichnet, daß im zweiten Filterabschnitt (30) mehrere parallel arbeitende Filterschnecken (31) vorgesehen sind.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE29522135U DE29522135U1 (de) | 1994-05-04 | 1995-05-03 | Vorrichtung zum Trennen des Flüssiganteils vom Feststoffanteil von Zweiphasensystemen |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4415773 | 1994-05-04 | ||
DE4415773 | 1994-05-04 | ||
US08/516,778 US5665232A (en) | 1994-05-04 | 1995-08-18 | Apparatus for separating off the liquid portion from the solids portion of two-phase systems |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0685325A2 EP0685325A2 (de) | 1995-12-06 |
EP0685325A3 EP0685325A3 (de) | 1996-01-24 |
EP0685325B1 true EP0685325B1 (de) | 1999-09-01 |
Family
ID=25936286
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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EP95106675A Expired - Lifetime EP0685325B1 (de) | 1994-05-04 | 1995-05-03 | Vorrichtung zum Trennen des Flüssiganteils vom Feststoffanteil von Zweiphasensystemen |
Country Status (2)
Country | Link |
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US (1) | US5665232A (de) |
EP (1) | EP0685325B1 (de) |
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US6419094B1 (en) * | 2000-02-09 | 2002-07-16 | Lyco Manufacturing, Inc. | Fixed sequential sprayer for a cylindrical wastewater screen |
AU2003900226A0 (en) * | 2003-01-21 | 2003-02-06 | Sarah Elizabeth Chenery Lobban | A filter system |
US20050199267A1 (en) * | 2004-03-15 | 2005-09-15 | Oakes Kenton T. | Washing system using recycled cleaning liquid |
US7137759B1 (en) * | 2005-12-30 | 2006-11-21 | The Young Industries, Inc. | System and method for handling bulk materials |
US7686871B2 (en) * | 2006-05-02 | 2010-03-30 | Seagate Technology Llc | Integrated filter assembly |
DE102007062223A1 (de) * | 2007-12-21 | 2009-06-25 | Bosch Mahle Turbo Systems Gmbh & Co. Kg | Ladeeinrichtung |
DE202010001765U1 (de) * | 2010-02-02 | 2011-06-09 | UTS Biogastechnik GmbH, 85399 | Schneckenseparator |
DE202010001758U1 (de) * | 2010-02-02 | 2011-06-09 | UTS Biogastechnik GmbH, 85399 | Schneckenseparator |
DE202010001759U1 (de) * | 2010-02-02 | 2011-06-09 | UTS Biogastechnik GmbH, 85399 | Schneckenseparator |
AT12606U1 (de) * | 2011-05-20 | 2012-08-15 | Applied Chemicals Handels Gmbh | Schneckenpresse |
US20130213904A1 (en) * | 2012-02-22 | 2013-08-22 | M2 Renewables, Inc. | Industrial separator and dewatering plant |
WO2013186184A1 (en) * | 2012-06-13 | 2013-12-19 | Voith Patent Gmbh | Method for removing liquid from a slurry |
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AT523264B1 (de) * | 2020-03-16 | 2021-07-15 | Andritz Ag Maschf | Verfahren zur Herstellung eines Siebkörpers sowie Sieb |
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-
1995
- 1995-05-03 EP EP95106675A patent/EP0685325B1/de not_active Expired - Lifetime
- 1995-08-18 US US08/516,778 patent/US5665232A/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
EP0685325A3 (de) | 1996-01-24 |
US5665232A (en) | 1997-09-09 |
EP0685325A2 (de) | 1995-12-06 |
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