EP3406792B1 - Device for sealing the filter press area between two filter press elements in the wedge zone of drainage machines - Google Patents

Device for sealing the filter press area between two filter press elements in the wedge zone of drainage machines Download PDF

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Publication number
EP3406792B1
EP3406792B1 EP18163874.3A EP18163874A EP3406792B1 EP 3406792 B1 EP3406792 B1 EP 3406792B1 EP 18163874 A EP18163874 A EP 18163874A EP 3406792 B1 EP3406792 B1 EP 3406792B1
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EP
European Patent Office
Prior art keywords
filter press
sealing
area
strip
sealing strip
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Active
Application number
EP18163874.3A
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German (de)
French (fr)
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EP3406792A1 (en
Inventor
Alois JAMMERNEGG
Georg Reck
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Andritz AG
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Andritz AG
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    • 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
    • B30B9/24—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 an endless pressing band
    • B30B9/248—Means for sealing the press zone
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F1/00—Wet end of machines for making continuous webs of paper
    • D21F1/66—Pulp catching, de-watering, or recovering; Re-use of pulp-water
    • D21F1/80—Pulp catching, de-watering, or recovering; Re-use of pulp-water using endless screening belts

Definitions

  • the invention relates to a device for sealing the filter press space between two filter press elements in the wedge zone of dewatering machines, especially double belt presses consisting of two rotating filter press belts, with at least two opposite sides of the filter press room between the filter press belts arranged elastic sealing strips which are attached to a support strip.
  • Such seals are used in twin-wire belt presses to limit the fibrous web, in particular pulp web and to prevent lateral leakage of the pulp, in particular pulp suspension in the region of the wedge zone. In the area of the wedge zone, the pressure on the suspension is continuously increased, so that a stable seal is required.
  • Such sealing devices are for example from the DE 34 04 422 A1 known. The attachment is very complex and therefore in an exchange, which must be due to the wear from time to time, also very time consuming. Attempts have been made here by means of bolts with a bayonet connection to create a simplification, but then the terminal block and the support bar must be secured by welding in position.
  • Other sealing devices include the EP 0 299 765 A2 known.
  • a plastic block is used, which must be very precisely adapted to the geometry of the wedge between the filter press belts (screen belts), which occur even at a low wear leaks.
  • the shows DE 31 39 797 A1 a lateral edge seal of a filter system with a drum filter and a press belt. The seal is connected to the filter drum with a dovetail joint. With lateral load of the profile piece, there is a risk that this part gives way and the gap to the press belt is no longer tight.
  • the aim of the invention is therefore to provide a sealing device which is easy and quick to assemble and has a long life with complete sealing effect even when worn.
  • the invention is therefore characterized in that the sealing strips are connected to each associated support strip by a dovetail joint.
  • the assembly and disassembly is then quite easy, with only a screw for securing is provided at the inlet (the largest distance between the two filter press belts).
  • the different length expansion of sealing strip and support strip by the different materials is made possible by the fact that the sealing strip in the dovetail connection can freely expand in the direction of the outlet (closest spacing of the filter press belts).
  • sealing strip consists of a base body and adjoining sealing lips and the sealing lips in the region of the base body have a smaller thickness.
  • the wedge can be made closer together, resulting in thinner and better pressed pulp bands.
  • a favorable embodiment of the invention is characterized in that the base body has an upper and a lower longitudinal groove.
  • Fig. 1 a shows a wedge zone 1 of a double belt machine also called twin wire press or twin wire press.
  • a pulp suspension in particular pulp suspension
  • a top wire 3 or upper filter press belt
  • a bottom wire 4 lower filter press belt
  • sealing devices 5 are used on both sides, which are also intended to limit the web width of the pulp web.
  • cross section in Fig. 1b It can be seen that the sealing device abuts both the upper wire 3 and the lower wire 4.
  • the existing in the area 6 pulp suspension, which is formed into a web here increases the sealing effect of the upper sieve 3 and 4 Untersieb 4 sealing strip 7.
  • the sealing devices 5 are adjustable transversely to the web running direction, so that different web widths can be adjusted.
  • Fig. 2 now shows a sealing device 5 according to the prior art.
  • the sealing strip 7 made of elastic material (elastomer) is connected by screws 10 by means of a terminal block 9 with a support bar 8.
  • Both the support strip 8, as well as the terminal block 9 are generally made of stainless steel.
  • the fastening of the sealing strip 7 and terminal strip 9 to the support strip 8 is carried out by a number of screws 10 over the entire length of the sealing device 5.
  • a number of bolts may be provided which function as a bayonet lock, in which case during assembly, the terminal block must be moved. It must then be fixed at their ends to the support bar 8 usually by spot welding.
  • the wings 7 ', 7 "of the sealing strip 7 are pressed by the suspension against the upper sieve 4 and the lower sieve 4 and therefore seal well, the upper sieve 3 being supported by a mostly perforated wedge plate 11 while the lower sieve is supported by a wedge plate 12
  • the squeezed liquid then passes through the top wire 3 or bottom wire 4 and the adjacent wedge plate 11 or 12, which often have a plurality of holes.
  • Fig. 3 shows a variant of the sealing device according to the invention 5.
  • the attachment of the sealing strip 7 on the support bar 8 takes place here via a dovetail connection 13.
  • the previously required terminal block 9 ( Fig. 2 ) is no longer necessary.
  • This design allows for quick and easy assembly and disassembly of the sealing strip 7.
  • the sealing strip 7 must be secured only at the inlet end (largest distance of the filter press belts 3.4 near the guide rollers 2) with a screw. This position is always easily accessible and therefore there are no other parts to dismantle.
  • sealing strip 7 which consists of elastic plastic, such as Robadur, and the support bar 8 made of stainless steel is unhindered possible that the sealing strip 7 in the dovetail joint 13 can expand unhindered.
  • the wings 7 ', 7 "of the sealing strip 7 can be compressed very far, but this is limited, so that always a gap between the filter press belts 3, 4 and the sealing strip 7 remains.
  • Fig. 4 shows the sealing strip 7 of a further variant of the invention.
  • the sealing strip 7 is executed on its one side with the dovetail joint 13.
  • the wings 7 ', 7 extendend. Between the sealing strip body 14 and the wings 7', 7", grooves 15 extend over the entire length of the sealing strip 7.
  • Fig. 5 shows the installation position of the sealing strip 7 according to Fig. 5 , It can be seen here again that no terminal strip is required by the stable dovetail connection 13.
  • upper sieve 3 and Untersieb 4 merged to the height of the sealing strip body 14 and thus the gap can be reduced. This increases the web quality.
  • the kink of the wings 7 ', 7 "laid in the connection to the sealing strip body of the wires away in the sealing strip body 14 so that it can not be damaged.
  • the application is not limited by the examples. Thus, e.g. The most diverse materials are used for sealing strip and support strip.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Paper (AREA)
  • Filtration Of Liquid (AREA)

Description

Die Erfindung betrifft eine Vorrichtung zum Abdichten des Filterpressraumes zwischen zwei Filterpresselementen in der Keilzone von Entwässerungsmaschinen, insbesondere Doppelbandpressen, bestehend aus zwei umlaufenden Filterpressbändern, mit mindestens an zwei gegenüberliegenden Seiten des Filterpressraumes zwischen den Filterpressbändern angeordneten elastischen Dichtleisten, die an einer Stützleiste befestigt sind.The invention relates to a device for sealing the filter press space between two filter press elements in the wedge zone of dewatering machines, especially double belt presses consisting of two rotating filter press belts, with at least two opposite sides of the filter press room between the filter press belts arranged elastic sealing strips which are attached to a support strip.

Solche Abdichtungen dienen bei Doppelsiebbandpressen zur Begrenzung der Faserstoffbahn, insbesondere Zellstoffbahn und sollen ein seitliches Austreten der Faserstoff-, insbesondere Zellstoffsuspension im Bereich der Keilzone verhindern. Im Bereich der Keilzone wird der Druck auf die Suspension kontinuierlich erhöht, so dass eine stabile Abdichtung erforderlich ist. Derartige Dichtvorrichtungen sind z.B. aus der DE 34 04 422 A1 bekannt. Die Befestigung ist aber sehr aufwändig und daher bei einem Austausch, der durch den Verschleiß bedingt von Zeit zu Zeit erfolgen muss, auch sehr zeitintensiv. Hier wurde versucht durch Bolzen mit einer Bajonettverbindung eine Vereinfachung zu schaffen, jedoch müssen dann die Klemmleiste und die Stützleiste mittels Schweißung in der Position gesichert werden. Weitere Dichtvorrichtungen sind u.a. aus der EP 0 299 765 A2 bekannt. Hier wird ein Kunststoffblock eingesetzt, der sehr genau an die Geometrie des Keils zwischen den Filterpressbändern (Siebbändern) angepasst sein muss, wobei schon bei einem geringen Verschleiß Undichtheiten auftreten. Weiters zeigt die DE 31 39 797 A1 eine seitliche Randabdichtung einer Filteranlage mit einem Trommelfilter und einem Pressband. Dabei ist die Dichtung mit einer Schwalbenschwanzverbindung mit der Filtertrommel verbunden. Bei seitlicher Beanspruchung des Profilstücks besteht die Gefahr, dass dieses Teil nachgibt und dabei der Spalt zum Pressband nicht mehr dicht ist.Such seals are used in twin-wire belt presses to limit the fibrous web, in particular pulp web and to prevent lateral leakage of the pulp, in particular pulp suspension in the region of the wedge zone. In the area of the wedge zone, the pressure on the suspension is continuously increased, so that a stable seal is required. Such sealing devices are for example from the DE 34 04 422 A1 known. The attachment is very complex and therefore in an exchange, which must be due to the wear from time to time, also very time consuming. Attempts have been made here by means of bolts with a bayonet connection to create a simplification, but then the terminal block and the support bar must be secured by welding in position. Other sealing devices include the EP 0 299 765 A2 known. Here, a plastic block is used, which must be very precisely adapted to the geometry of the wedge between the filter press belts (screen belts), which occur even at a low wear leaks. Furthermore, the shows DE 31 39 797 A1 a lateral edge seal of a filter system with a drum filter and a press belt. The seal is connected to the filter drum with a dovetail joint. With lateral load of the profile piece, there is a risk that this part gives way and the gap to the press belt is no longer tight.

Ziel der Erfindung ist es daher eine Dichtvorrichtung zu schaffen, die einfach und schnell zu montieren ist und auch bei Verschleiß eine lange Lebensdauer mit vollständiger Dichtwirkung hat.The aim of the invention is therefore to provide a sealing device which is easy and quick to assemble and has a long life with complete sealing effect even when worn.

Die Erfindung ist daher dadurch gekennzeichnet, dass die Dichtleisten mit der jeweils zugeordneten Stützleiste durch eine Schwalbenschwanzverbindung miteinander verbunden sind. Die Montage und Demontage ist dann recht einfach möglich, wobei nur am Einlauf (dem größten Abstand der beiden Filterpressbänder) eine Schraube zur Sicherung vorgesehen ist. Die unterschiedliche Längenausdehnung von Dichtleiste und Stützleiste durch die unterschiedlichen Materialien wird dadurch ermöglicht, dass sich die Dichtleiste in der Schwalbenschwanzverbindung ungehindert in Richtung auf den Auslauf (engster Abstand der Filterpressbänder) ausdehnen kann.The invention is therefore characterized in that the sealing strips are connected to each associated support strip by a dovetail joint. The assembly and disassembly is then quite easy, with only a screw for securing is provided at the inlet (the largest distance between the two filter press belts). The different length expansion of sealing strip and support strip by the different materials is made possible by the fact that the sealing strip in the dovetail connection can freely expand in the direction of the outlet (closest spacing of the filter press belts).

Eine vorteilhafte Weiterbildung der Erfindung ist dadurch gekennzeichnet, dass die Dichtleiste aus einem Grundkörper und daran anschließenden Dichtlippen besteht und die Dichtlippen im Bereich des Grundkörpers eine geringere Dicke aufweisen. Dadurch kann der Keil enger zusammengestellt werden, was zu dünneren und besser ausgepressten Zellstoffbändern führt.An advantageous development of the invention is characterized in that the sealing strip consists of a base body and adjoining sealing lips and the sealing lips in the region of the base body have a smaller thickness. As a result, the wedge can be made closer together, resulting in thinner and better pressed pulp bands.

Eine günstige Ausgestaltung der Erfindung ist dadurch gekennzeichnet, dass der Grundkörper eine obere und eine untere Längsnut aufweist. Durch die Verlagerung der Knickstelle der Dichtlippen in den Bereich innerhalb des Grundkörpers kann die Knickstelle nicht mehr beschädigt werden. Außerdem kann dadurch der Spalt zwischen den Filterpressbändern reduziert werden.A favorable embodiment of the invention is characterized in that the base body has an upper and a lower longitudinal groove. By shifting the kink of the sealing lips in the area within the body, the kink can not be damaged. In addition, this can reduce the gap between the filter press belts.

Die Erfindung wird nun anhand der Zeichnungen beispielhaft beschrieben, wobei

  • Fig. 1a eine Keilzone einer Doppelbandmaschine
  • Fig. 1b einen Querschnitt durch die Keilzone nach Fig. 1a entlang der Linie II-II
  • Fig. 2 eine Dichtvorrichtung nach dem Stand der Technik,
  • Fig. 3 eine Variante der erfindungsgemäßen Dichtvorrichtung,
  • Fig. 4 eine andere Variante der erfindungsgemäßen Dichtvorrichtung,
  • Fig. 5 die Einbausituation der Dichtvorrichtung nach Fig. 4
darstellt.The invention will now be described by way of example with reference to the drawings, in which:
  • Fig. 1a a wedge zone of a double belt machine
  • Fig. 1b a cross section through the wedge zone after Fig. 1a along the line II-II
  • Fig. 2 a sealing device according to the prior art,
  • Fig. 3 a variant of the sealing device according to the invention,
  • Fig. 4 another variant of the sealing device according to the invention,
  • Fig. 5 the installation situation of the sealing device after Fig. 4
represents.

Fig. 1 a zeigt eine Keilzone 1 einer Doppelbandmaschine auch Doppelsiebpresse oder Twin Wire Press genannt. Hier wird eine Faserstoffsuspension, insbesondere Zellstoffsuspension, im Bereich der Einlaufwalzen 2 zwischen ein Obersieb 3 (oder oberes Filterpressband) und ein Untersieb 4 (unteres Filterpressband) eingebracht und durch den kontinuierlich im Keil ansteigenden Druck entwässert. Durch diese Drucksteigerung würde die Suspension an den Seiten austreten. Daher werden auf beiden Seiten Dichtungsvorrichtungen 5 eingesetzt, die außerdem die Bahnbreite der Zellstoffbahn begrenzen sollen. Im Querschnitt in Fig. 1b ist erkennbar, dass die Dichtungsvorrichtung sowohl am Obersieb 3 als auch am Untersieb 4 anliegt. Die im Bereich 6 vorhandene Zellstoffsuspension, die zu einer Bahn geformt wird, erhöht hier die Dichtwirkung der an Obersieb 3 und Untersieb 4 anliegenden Dichtleiste 7. Die Dichtvorrichtungen 5 sind quer zur Bahnlaufrichtung verstellbar, so dass auch unterschiedliche Bahnbreiten eingestellt werden können. Fig. 1 a shows a wedge zone 1 of a double belt machine also called twin wire press or twin wire press. Here a pulp suspension, in particular pulp suspension, is introduced in the area of the inlet rollers 2 between a top wire 3 (or upper filter press belt) and a bottom wire 4 (lower filter press belt) and dewatered by the pressure rising continuously in the wedge. As a result of this pressure increase, the suspension would emerge on the sides. Therefore, sealing devices 5 are used on both sides, which are also intended to limit the web width of the pulp web. In cross section in Fig. 1b It can be seen that the sealing device abuts both the upper wire 3 and the lower wire 4. The existing in the area 6 pulp suspension, which is formed into a web here increases the sealing effect of the upper sieve 3 and 4 Untersieb 4 sealing strip 7. The sealing devices 5 are adjustable transversely to the web running direction, so that different web widths can be adjusted.

Fig. 2 zeigt nun eine Dichtvorrichtung 5 nach dem Stand der Technik. Die Dichtleiste 7 aus elastischem Werkstoff (Elastomer) wird durch Schrauben 10 mittels einer Klemmleiste 9 mit einer Stützleiste 8 verbunden. Sowohl die Stützleiste 8, als auch die Klemmleiste 9 sind im Allgemeinen aus rostfreiem Stahl gefertigt. Die Befestigung der Dichtleiste 7 und Klemmleiste 9 an der Stützleiste 8 erfolgt durch eine Anzahl von Schrauben 10 über die gesamte Länge der Dichtvorrichtung 5. Alternativ könne auch eine Anzahl von Bolzen vorgesehen sein, die als Bajonettverschluss Funktionieren, wobei hier bei der Montage die Klemmleiste 9 verschoben werden muss. Sie muss dann auch an ihren Enden an den Stützleiste 8 meist durch Punktschweißung fixiert werden. Die Flügel 7', 7" der Dichtleiste 7 werden durch die Suspension an das Obersieb 4 und das Untersieb 4 gedrückt und dichten daher gut ab. Das Obersieb 3 wird dabei durch eine meist perforierte Keilplatte 11 gestützt während das Untersieb durch eine Keilplatte 12 gestützt wird. Die ausgepresste Flüssigkeit tritt dann durch das Obersieb 3 bzw. Untersieb 4 und die anliegende Keilplatte 11 bzw. 12, die oft eine Vielzahl von Bohrungen aufweisen. Fig. 2 now shows a sealing device 5 according to the prior art. The sealing strip 7 made of elastic material (elastomer) is connected by screws 10 by means of a terminal block 9 with a support bar 8. Both the support strip 8, as well as the terminal block 9 are generally made of stainless steel. The fastening of the sealing strip 7 and terminal strip 9 to the support strip 8 is carried out by a number of screws 10 over the entire length of the sealing device 5. Alternatively, a number of bolts may be provided which function as a bayonet lock, in which case during assembly, the terminal block must be moved. It must then be fixed at their ends to the support bar 8 usually by spot welding. The wings 7 ', 7 "of the sealing strip 7 are pressed by the suspension against the upper sieve 4 and the lower sieve 4 and therefore seal well, the upper sieve 3 being supported by a mostly perforated wedge plate 11 while the lower sieve is supported by a wedge plate 12 The squeezed liquid then passes through the top wire 3 or bottom wire 4 and the adjacent wedge plate 11 or 12, which often have a plurality of holes.

Fig. 3 zeigt eine Variante der erfindungsgemäßen Dichtungsvorrichtung 5. Die Befestigung der Dichtleiste 7 an der Stützleiste 8 erfolgt hier über eine Schwalbenschwanzverbindung 13. Bei Montage wird hier die Dichtleiste 7 auf die Stützleiste 8 aufgeschoben. Die bisher erforderliche Klemmleiste 9 (Fig. 2) ist nicht mehr erforderlich. Diese Ausführung ermöglicht eine schnelle und einfache Montage bzw. Demontage der Dichtleiste 7. Die Dichtleiste 7 muss nur am einlaufseitigen Ende (größter Abstand der Filterpressbänder 3,4 nahe der Umlenkwalzen 2) mit einer Schraube gesichert werden. Diese Position ist immer leicht erreichbar und es sind daher auch keine weiteren Teile zu demontieren. Die unterschiedliche Längenausdehnung von Dichtleiste 7, die aus elastischem Kunststoff, beispielsweise Robadur, besteht und der Stützleiste 8 aus rostfreiem Stahl ist ungehindert möglich, das sich die Dichtleiste 7 in der Schwalbenschwanzverbindung 13 ungehindert ausdehnen kann. Die Flügel 7', 7" der Dichtleiste 7 können sehr weit zusammengedrückt werden, wobei dies aber begrenzt ist, so dass immer ein Spalt zwischen den Filterpressbändern 3, 4 und der Dichtleiste 7 bestehen bleibt. Fig. 3 shows a variant of the sealing device according to the invention 5. The attachment of the sealing strip 7 on the support bar 8 takes place here via a dovetail connection 13. When mounting the sealing strip 7 is pushed onto the support strip 8 here. The previously required terminal block 9 ( Fig. 2 ) is no longer necessary. This design allows for quick and easy assembly and disassembly of the sealing strip 7. The sealing strip 7 must be secured only at the inlet end (largest distance of the filter press belts 3.4 near the guide rollers 2) with a screw. This position is always easily accessible and therefore there are no other parts to dismantle. The different length expansion of sealing strip 7, which consists of elastic plastic, such as Robadur, and the support bar 8 made of stainless steel is unhindered possible that the sealing strip 7 in the dovetail joint 13 can expand unhindered. The wings 7 ', 7 "of the sealing strip 7 can be compressed very far, but this is limited, so that always a gap between the filter press belts 3, 4 and the sealing strip 7 remains.

Fig. 4 zeigt die Dichtleiste 7 einer weiteren Variante der Erfindung. Die Dichtleiste 7 ist an ihrer einen Seite mit der Schwalbenschwanzverbindung 13 ausgeführt. Auf der anderen Seite erstrecken sich die Flügel 7', 7". Zwischen dem Dichtleistenkörper 14 und den Flügeln 7', 7" erstrecken sich Nuten 15 über die gesamte Länge der Dichtleiste 7. Fig. 4 shows the sealing strip 7 of a further variant of the invention. The sealing strip 7 is executed on its one side with the dovetail joint 13. On the other side, the wings 7 ', 7 "extend. Between the sealing strip body 14 and the wings 7', 7", grooves 15 extend over the entire length of the sealing strip 7.

Fig. 5 zeigt dann die Einbauposition der Dichtleiste 7 gemäß Fig. 5. Man erkennt hier wiederum, dass durch die stabile Schwalbenschwanzverbindung 13 keine Klemmleiste erforderlich ist. Durch diese Ausgestaltung wird auch ermöglicht, dass Obersieb 3 und Untersieb 4 bis auf die Höhe des Dichtleistenkörpers 14 zusammengeführt und damit der Spalt reduziert werden können. Dadurch wird die Bahnqualität gesteigert. Auch ist die Knickstelle der Flügel 7', 7" bei der Anbindung an den Dichtleistenkörper von den Sieben weg in den Dichtleistenkörper 14 verlegt, so dass diese nicht mehr beschädigt werden kann. Fig. 5 then shows the installation position of the sealing strip 7 according to Fig. 5 , It can be seen here again that no terminal strip is required by the stable dovetail connection 13. By this configuration is also possible that upper sieve 3 and Untersieb 4 merged to the height of the sealing strip body 14 and thus the gap can be reduced. This increases the web quality. Also, the kink of the wings 7 ', 7 "laid in the connection to the sealing strip body of the wires away in the sealing strip body 14 so that it can not be damaged.

Die Anmeldung ist nicht durch die Beispiele beschränkt. So können z.B. die verschiedensten Materialien für Dichtleiste und Stützleiste verwendet werden.The application is not limited by the examples. Thus, e.g. The most diverse materials are used for sealing strip and support strip.

Claims (3)

  1. Device for sealing the filter press area between two filter press elements in the wedge zone (1) of dewatering machines, particularly double belt presses consisting of two revolving filter press belts (3, 4) with flexible sealing strips (7) that can be arranged between the filter press belts on at least two opposite sides of the filter press area, which are secured to a supporting strip (8), characterized in that the sealing strips with the respective supporting strips assigned to them are connected to one another by means of a dovetail joint (13).
  2. Device according to claim 1, characterized in that the sealing strip consists of a base frame (14) and adjoining sealing lips (7'. 7") and the sealing lips are thinner in the area of the base frame.
  3. Device according to claim 2, characterized in that the base frame has a top and bottom longitudinal groove (15).
EP18163874.3A 2017-05-22 2018-03-26 Device for sealing the filter press area between two filter press elements in the wedge zone of drainage machines Active EP3406792B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ATA50432/2017A AT520009A1 (en) 2017-05-22 2017-05-22 DEVICE FOR SEALING THE FILTER SPREAD BETWEEN TWO FILTER PRESS ELEMENTS IN THE WEDGE ZONE OF DRAINAGE MACHINES

Publications (2)

Publication Number Publication Date
EP3406792A1 EP3406792A1 (en) 2018-11-28
EP3406792B1 true EP3406792B1 (en) 2019-09-18

Family

ID=61768186

Family Applications (1)

Application Number Title Priority Date Filing Date
EP18163874.3A Active EP3406792B1 (en) 2017-05-22 2018-03-26 Device for sealing the filter press area between two filter press elements in the wedge zone of drainage machines

Country Status (5)

Country Link
EP (1) EP3406792B1 (en)
AT (1) AT520009A1 (en)
BR (1) BR102018008883B1 (en)
ES (1) ES2755896T3 (en)
PT (1) PT3406792T (en)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3139797A1 (en) * 1981-10-07 1983-04-21 Krauss-Maffei AG, 8000 München FILTER SYSTEM
JPS59104299A (en) * 1982-12-03 1984-06-16 Shinryo Air Conditioning Co Ltd Sludge dehydrator of belt press type
DE3404422A1 (en) * 1983-03-24 1984-10-04 Anstalt für Strömungsmaschinen GmbH, Graz Sealing device of the wedge section of draining machines
AT395736B (en) * 1991-07-11 1993-02-25 Andritz Patentverwaltung Apparatus for treating a material conveyed between at least two endless permeable belts

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

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Publication number Publication date
BR102018008883A2 (en) 2019-03-26
PT3406792T (en) 2019-11-21
BR102018008883B1 (en) 2023-12-26
AT520009A1 (en) 2018-12-15
ES2755896T3 (en) 2020-04-24
EP3406792A1 (en) 2018-11-28

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