WO2002047788A1 - Filter press comprising a cake ejecting device - Google Patents

Filter press comprising a cake ejecting device Download PDF

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Publication number
WO2002047788A1
WO2002047788A1 PCT/EP2001/013381 EP0113381W WO0247788A1 WO 2002047788 A1 WO2002047788 A1 WO 2002047788A1 EP 0113381 W EP0113381 W EP 0113381W WO 0247788 A1 WO0247788 A1 WO 0247788A1
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WO
WIPO (PCT)
Prior art keywords
filter
filteφresse
filteφlatten
rod
filter cloth
Prior art date
Application number
PCT/EP2001/013381
Other languages
German (de)
French (fr)
Inventor
Richard Van Egdom
Original Assignee
Outokumpu Oyj
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Outokumpu Oyj filed Critical Outokumpu Oyj
Priority to AU2002219121A priority Critical patent/AU2002219121A1/en
Publication of WO2002047788A1 publication Critical patent/WO2002047788A1/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D25/00—Filters formed by clamping together several filtering elements or parts of such elements
    • B01D25/12—Filter presses, i.e. of the plate or plate and frame type
    • B01D25/164—Chamber-plate presses, i.e. the sides of the filtering elements being clamped between two successive filtering plates
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D25/00—Filters formed by clamping together several filtering elements or parts of such elements
    • B01D25/12—Filter presses, i.e. of the plate or plate and frame type
    • B01D25/172—Plate spreading means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D25/00—Filters formed by clamping together several filtering elements or parts of such elements
    • B01D25/32—Removal of the filter cakes
    • B01D25/34—Removal of the filter cakes by moving, e.g. rotating, the filter elements
    • B01D25/346—Removal of the filter cakes by moving, e.g. rotating, the filter elements by vibration

Definitions

  • the invention relates to a filter press for the filtration of suspensions with a package of vertically oriented filter plates, each of which includes a filter chamber between them in pairs, which is delimited on both sides by a filter cloth, which, starting from the lower ends of the filter plates, covers the filter mirror via a Above the filter plate arranged crossbar is guided, which is movable in the vertical direction when adjacent Filte ⁇ latten are transferred from a closed position in which the suspension can be inserted into the sealed filter chamber to an open position in which the Filte ⁇ latten have a drainage distance to each other in the horizontal direction and the filter cloth assumes a roof shape, the filter press further being provided with a discharge device for filter cakes adhering to the filter cloth, with which the filter cloth can be moved in an oscillating manner.
  • Such a well-known Filte ⁇ resse has a vibrating device, with which the cross members for deflecting the filter cloths, in which a so-called spreading cloth arrangement is present, are moved either individually or together in an oscillating vertical direction. Because of these shaking movements, the filter cake should be detached from the filter cloth and fall into a collecting device arranged below the filter press. In practice, however, it has been found that a detachment of the filter cake cannot be guaranteed with absolute certainty with every filter cake quality, so that filter cake residues often adhere to the filter cloth. This can disturb the proper course of the next filtration process, but at least the capacity of the filter chamber is restricted.
  • the invention has for its object to develop a Filte ⁇ resse with a filter cake dropping device so that a very reliable detachment of the filter cake from the filter cloth can be achieved in a simple manner, so that a fully automatic operation of the Filte ⁇ resse is ensured.
  • this object is achieved in that the crossbar is oscillating in the horizontal direction.
  • the two halves of the filter cloth spread out in a roof shape are alternately brought into an even greater inclined position by the horizontal movement, so that they are perpendicular to the surface of the filter cloth standing component of the weight of the filter cake is increased and favors the dropping of the filter cake.
  • the oscillating movement in the horizontal direction especially in the dead centers, also causes a large acceleration in the horizontal direction on the filter cake. A large proportion of this horizontal acceleration, as a component oriented vertically to the surface of the filter cloth, favors the detachment of the filter cake from the filter cloth. Even a small number of lifting movements is sufficient to ensure that the filter press according to the invention is reliable
  • the stroke of the horizontal movement essentially corresponds to the emptying distance, so that in this case the maximum possible inclined position can alternately be achieved by half of the roof-shaped filter cloth.
  • the horizontal movement in the dead centers is in each case limited by a stop element.
  • a particularly great acceleration acts on the filter cake in the horizontal direction, so that the safety against dropping can be further increased.
  • the cross members of the Filte ⁇ latten at least one section of the Filte ⁇ resse are simultaneously movable. As a result, the time required for throwing off the filter cake can be significantly reduced compared to dropping off just a single filter cloth.
  • the cross members can be coupled during the detachment process with a bracket each, which are attached to a rod running in the longitudinal direction of the Filte ⁇ resse over the Filte ⁇ latten, oscillating in the axial direction.
  • the U-shaped bracket allows a positive connection between a simple Manufacture transmission device and the crossbar to initiate the shaking movements in the filter cloth.
  • the bar is provided with brackets for the cross members of all sections, the brackets of different sections being offset by an angle in the circumferential direction of the bar and the bar being pivotable about its longitudinal axis.
  • the relevant chambers can first be emptied after the next section has been opened by pivoting the brackets into the cross members of the opened section. After completion of the emptying process of the first section, the relevant brackets can be swung out and the emptied section can be closed again, whereby the next section is opened at the same time. By pivoting the rod again, the brackets for the now open section can be brought into engagement with the relevant cross members, which is followed by the emptying of this section. This process can continue until all sections have been emptied.
  • a coupling is provided between a drive device for the horizontal oscillating stroke movement of the rod and a swivel drive for the rod, in order to be able to decouple the drive device for the stroke movement in the event of a swivel movement of the rod.
  • FIG. 1 shows a side view of a filter press and FIG. 2 shows a front view of the filter press according to FIG. 1.
  • the Filte ⁇ resse 1 shown in Figures 1 and 2 has a press frame 2, which consists of lower stands 3 and upper stands 4 and the longitudinal beams 5 connecting the latter and two support bars 6.
  • a plurality of vertically aligned Filte ⁇ latten 8 is mounted horizontally displaceably on the support bars 6 with the aid of laterally projecting support brackets 7. For reasons of clarity, only a small number is shown of the Filte ⁇ latten 8, the number of which can easily reach 30.
  • FIG. 1 shows the packet of Filte ⁇ latten 8 in the so-called open position, in which adjacent Filte ⁇ latten 8 have a so-called emptying distance 12 from each other in the horizontal direction.
  • a filter cloth 14 is attached to the lower ends 13 of each Filte ⁇ latte 8, which is guided over a horizontal crossbar 15 arranged above the Filte ⁇ latten 8 and horizontally. In the open position of the plate pack, the filter cloths 14 therefore assume the roof-like shape shown in FIG.
  • the cross members 15 are connected at both ends via tension springs 16 with rollers 17 which move along the top of the longitudinal cross member 5 and ensure that the filter cloth 14 is always tensioned both in the closed position and in the open position of the filter press 1.
  • Adjacent Filte ⁇ latten 8 are each connected via a connecting bracket 18 through which all Filte ⁇ latten 8 can be brought to the defined emptying distance 12 from each other as a result of a displacement of the end piece 10.
  • a filter cake detaching device consists of further stands 19, 20 and 21, on which a rod 22 is slidably mounted in the longitudinal direction of the filter press 1 and which is additionally pivotable about its longitudinal axis 23.
  • U-shaped brackets 25, the number of which corresponds to the number of cross members 15, are fastened to the outer lateral surface 24 of the rod 22.
  • Figure 1 shows the bracket 25 in a position in which they include the laterally projecting beyond the Filte ⁇ latten 8 ends 26 of the cross members 15.
  • the view according to FIG. 2 shows that the brackets 25 can also be moved into a position likewise shown, in which the engagement with the cross members 15 is released, by pivoting the rod 22. This position is assumed when the Filte ⁇ latten 8 are in the closed position and the distances between the center planes of adjacent brackets 25 do not match the distances between adjacent cross members 15.
  • the rods 22 are rotated with the aid of the swivel drives 27, whereas the oscillating lifting movement in the horizontal direction is carried out with the aid of lifting drives 28 which are connected to the rod 22 via couplings 29.
  • the one stroke has the size of the emptying distance 12
  • the lifting movement is limited in both directions by a stop element 30 in each case.
  • the brackets 25 connected to it and the coupled crossbeams 15, one half of the filter cloth 14 - starting from the situation symmetrical to a vertical plane according to FIG. 1 - is brought into a vertical position , in which the filter cloth 14 comes to rest against the associated filter plate 8.
  • the other half of the filter cloth is brought into a more inclined position than in the starting position, the angle of inclination being almost doubled.
  • the filter cake 31 is usually ejected at the moment when the stop elements 30 come into action, as a result of which a particularly great acceleration acts on the filter cake 31 and is initially thrown off approximately in the vertical direction to the filter cloth 14.
  • the filter cake 31 is usually detached from the opposite half of the filter cloth 14 in the opposite dead center position of the associated crossbar 15.
  • the filter chambers are generally emptied section by section, since the space required for the opened filter plate package would otherwise be too great. Since the filter cake discharge device in this case only has to act on the Filte ⁇ latten 8 of an open section, the bracket 25 of different sections are staggered on the outer surface of the rod 22, so that only the bracket 25 of the section just opened and to be emptied with the associated cross members 15 are engaged.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Filtration Of Liquid (AREA)

Abstract

A filter press (1) for filtering suspensions comprises a packet of vertically aligned filter plates (8) that, in pairs, form a filter chamber between them. Each filter chamber is delimited on both sides by a filter cloth (14) that, starting from the lower ends (13) of the filter plates (8), is guided, while covering the filtering level, over a cross-member (15) arranged above the filter plates (8). The cross-member (15) can be displaced in a vertical direction when adjacent filter plates (8) are transferred from a closed position, in which the suspension can be introduced into the sealed filter chamber, into an open position, in which the filter plates (8) have an emptying space (12) between one another in a horizontal direction. The filter cloth (14) adopts a cambered shape when in this position. In addition, the filter press (1) is provided with an ejecting device, which is provided for ejecting filter cakes (31) adhering to the filter cloth (14) and with which the filter cloth (14) can be displaced in an oscillatory manner. In order to reliably detach the filter cake (31) from the filter cloth (14), the invention provides that the cross-members (15) can be displaced in an oscillatory manner in a horizontal direction.

Description

Filterpresse mit einer KuchenabwurfeinrichtungFilter press with a cake discharge device
Die Erfindung betrifft eine Filterpresse zur Filtration von Suspensionen mit einem Paket von vertikal ausgerichteten Filterplatten, die paarweise jeweils eine Filterkammer zwischen sich einschließen, die jeweils beidseitig von einem Filtertuch begrenzt wird, das, ausgehend von den unteren Enden der Filterplatten den Filterspiegel überdeckend, über eine oberhalb der Filterplatte angeordnete Quertraverse geführt ist, die in vertikale Richtung bewegbar ist, wenn benachbarte Filteφlatten von einer Schließstellung, in der die Suspension in die abgedichtete Filterkammer einführbar ist, in eine Öffnungsstellung überführt werden, in der die Filteφlatten in horizontale Richtung einen Entleerungsabstand zueinander aufweisen und das Filtertuch eine Dachform einnimmt, wobei die Filteφresse des weiteren mit einer Abwurfvorrichtung für an dem Filtertuch anhaftenden Filterkuchen versehen ist, mit der das Filtertuch oszillierend bewegbar ist.The invention relates to a filter press for the filtration of suspensions with a package of vertically oriented filter plates, each of which includes a filter chamber between them in pairs, which is delimited on both sides by a filter cloth, which, starting from the lower ends of the filter plates, covers the filter mirror via a Above the filter plate arranged crossbar is guided, which is movable in the vertical direction when adjacent Filteφlatten are transferred from a closed position in which the suspension can be inserted into the sealed filter chamber to an open position in which the Filteφlatten have a drainage distance to each other in the horizontal direction and the filter cloth assumes a roof shape, the filter press further being provided with a discharge device for filter cakes adhering to the filter cloth, with which the filter cloth can be moved in an oscillating manner.
Eine derartige allgemein bekannte Filteφresse besitzt eine Rütteleinrichtung, mit der die Quertraversen zur Umlenkung der Filtertücher, bei denen eine sogenannte Spreiztuchanordnung vorliegt, entweder einzeln oder gemeinsam in vertikale Richtung oszillierend bewegt werden. Aufgrund dieser Rüttelbewegungen soll der Filterkuchen von dem Filtertuch abgelöst werden und in eine unterhalb der Filteφresse angeordnete Auffangvorrichtung fallen. In der Praxis hat es sich jedoch herausgestellt, daß eine Ablösung des Filterkuchens nicht bei jeder Filterkuchenbeschaffenheit mit absoluter Sicherheit gewährleistet werden kann, so daß es des öfteren dazu kommt, daß Filterkuchenreste an dem Filtertuch anhaften. Hierdurch kann ein ordnungsgemäßer Ablauf des nächstfolgenden Filtrationsvorgangs gestört werden, zumindest jedoch wird das Fassungsvermögen der Filterkammer eingeschränkt.Such a well-known Filteφresse has a vibrating device, with which the cross members for deflecting the filter cloths, in which a so-called spreading cloth arrangement is present, are moved either individually or together in an oscillating vertical direction. Because of these shaking movements, the filter cake should be detached from the filter cloth and fall into a collecting device arranged below the filter press. In practice, however, it has been found that a detachment of the filter cake cannot be guaranteed with absolute certainty with every filter cake quality, so that filter cake residues often adhere to the filter cloth. This can disturb the proper course of the next filtration process, but at least the capacity of the filter chamber is restricted.
Der Erfindung liegt die Aufgabe zugrunde, eine Filteφresse mit einer Filterkuchenabwurfvorrichtung so weiter zu entwickeln, daß auf einfache Weise ein sehr zuverlässiges Ablösen des Filterkuchens von dem Filtertuch erzielt werden kann, so daß ein vollautomatischer Betrieb der Filteφresse gewährleistet ist.The invention has for its object to develop a Filteφresse with a filter cake dropping device so that a very reliable detachment of the filter cake from the filter cloth can be achieved in a simple manner, so that a fully automatic operation of the Filteφresse is ensured.
Ausgehend von einer Filteφresse der eingangs beschriebenen Art wird diese Aufgabe erfindungsgemäß dadurch gelöst, daß die Quertraverse in horizontale Richtung oszillierend bewegbar ist. Im Gegensatz zu der aus der DE 4427447 AI bekannten Filteφresse, bei der die oszillierende Bewegung in vertikale Richtung erfolgt, werden die beiden Hälften des dachförmig gespreizten Filtertuchs durch die horizontale Bewegung abwechselnd in eine noch größere Schräglage gebracht, so daß die senkrecht zur Oberfläche des Filtertuchs stehende Komponente der Gewichtskraft des Filterkuchens vergrößert wird und den Abwurf des Filterkuchens begünstigt. Des weiteren bewirkt die oszillierende Bewegung in horizontale Richtung insbesondere in den Totpunkten eine große Beschleunigung ebenfalls in horizontale Richtung auf den Filterkuchen. Ein großer Anteil dieser horizontalen Beschleunigung begünstigt als vertikal zu der Oberfläche des Filtertuchs ausgerichtete Komponente die Ablösung des Filterkuchens von dem Filtertuch. Bereits eine geringe Anzahl von Hubbewegungen reicht aus, um bei der erfindungsgemäßen Filteφresse eine zuverlässigeStarting from a Filteφresse of the type described above, this object is achieved in that the crossbar is oscillating in the horizontal direction. In contrast to the Filteφresse known from DE 4427447 AI, in which the oscillating movement takes place in the vertical direction, the two halves of the filter cloth spread out in a roof shape are alternately brought into an even greater inclined position by the horizontal movement, so that they are perpendicular to the surface of the filter cloth standing component of the weight of the filter cake is increased and favors the dropping of the filter cake. Furthermore, the oscillating movement in the horizontal direction, especially in the dead centers, also causes a large acceleration in the horizontal direction on the filter cake. A large proportion of this horizontal acceleration, as a component oriented vertically to the surface of the filter cloth, favors the detachment of the filter cake from the filter cloth. Even a small number of lifting movements is sufficient to ensure that the filter press according to the invention is reliable
Ablösung des Filterkuchens zu bewirken.Detachment of the filter cake.
Vorteilhafterweise entspricht der Hub der horizontalen Bewegung im wesentlichen dem Entleerungsabstand, so daß in diesem Fall die maximal mögliche Schräglage abwechselnd jeweils einer Hälfte des dachförmigen Filtertuchs erreicht werden kann.Advantageously, the stroke of the horizontal movement essentially corresponds to the emptying distance, so that in this case the maximum possible inclined position can alternately be achieved by half of the roof-shaped filter cloth.
Gemäß einer Ausgestaltung der erfindungsgemäßen Filteφresse ist vorgesehen, daß die horizontale Bewegung in den Totpunkten jeweils durch ein Anschlagelement begrenzt ist. Infolge des Anstoßens der Quertraverse selbst oder eines zu dessen Bewegung vorgesehen Antriebs-elements auf das Anschlagelement wirkt eine besonders große Beschleunigung auf den Filterkuchen in horizontale Richtung, so daß die Abwurfsicherheit weiter gesteigert werden kann.According to an embodiment of the filter press according to the invention, it is provided that the horizontal movement in the dead centers is in each case limited by a stop element. As a result of the abutment of the crossbeam itself or of a drive element provided for its movement on the stop element, a particularly great acceleration acts on the filter cake in the horizontal direction, so that the safety against dropping can be further increased.
Die Erfindung weiter ausgestaltend ist vorgesehen, daß die Quertraversen der Filteφlatten zumindest einer Sektion der Filteφresse gleichzeitig bewegbar sind. Hierdurch kann der Zeitaufwand für das Abwerfen des Filterkuchens gegenüber einem Abwurf von nur einem einzelnen Filtertuch deutlich gesenkt werden.Developing the invention further, it is provided that the cross members of the Filteφlatten at least one section of the Filteφresse are simultaneously movable. As a result, the time required for throwing off the filter cake can be significantly reduced compared to dropping off just a single filter cloth.
Eine Weiterbildung der Filteφresse gemäß der Erfindung besteht darin, daß die Quertraversen während des Ablösevorgangs mit jeweils einem Bügel koppelbar sind, die an einer in Längsrichtung der Filteφresse über den Filteφlatten verlaufenden, in axiale Richtung oszillierend bewegbaren Stange befestigt sind. Die beispielsweise U-förmig ausgebildeten Bügel erlauben es auf einfache Weise, einen Formschluß zwischen einer Übertragungseinrichtung und den Quertraversen herzustellen, um die Rüttelbewegungen in das Filtertuch einleiten zu können.A further development of the Filteφresse according to the invention is that the cross members can be coupled during the detachment process with a bracket each, which are attached to a rod running in the longitudinal direction of the Filteφresse over the Filteφlatten, oscillating in the axial direction. The U-shaped bracket, for example, allows a positive connection between a simple Manufacture transmission device and the crossbar to initiate the shaking movements in the filter cloth.
Schließlich ist gemäß der Erfindung noch vorgesehen, daß die Stange mit Bügeln für die Quertraversen sämtlicher Sektionen versehen ist, wobei die Bügel unterschiedlicher Sektionen in Umfangsrichtung der Stange um einen Winkel versetzt angeordnet sind und die Stange um ihre Längsachse schwenkbar ist.Finally, according to the invention it is also provided that the bar is provided with brackets for the cross members of all sections, the brackets of different sections being offset by an angle in the circumferential direction of the bar and the bar being pivotable about its longitudinal axis.
Bei einer aus mehreren Sektionen bestehenden Filteφresse kann somit nach dem Öffnen der nächsten Sektion durch Einschwenken der Bügel in die Quertraversen der geöffneten Sektion eine Entleerung zunächst der betreffenden Kammern durchgeführt werden. Nach Abschluß des Entleerungsvorgangs der ersten Sektion können die betreffenden Bügel ausgeschwenkt und die entleerte Sektion wiederum geschlossen werden, wodurch gleichzeitig die nächstfolgende Sektion geöffnet wird. Durch erneutes Verschwenken der Stange können die Bügel für die nun offene Sektion mit den betreffenden Quertraversen in Eingriff gebracht werden, woran sich die Entleerung dieser Sektion anschließt. Dieser Vorgang kann fortgesetzt werden, bis sämtliche Sektionen entleert sind.In the case of a filter press consisting of several sections, the relevant chambers can first be emptied after the next section has been opened by pivoting the brackets into the cross members of the opened section. After completion of the emptying process of the first section, the relevant brackets can be swung out and the emptied section can be closed again, whereby the next section is opened at the same time. By pivoting the rod again, the brackets for the now open section can be brought into engagement with the relevant cross members, which is followed by the emptying of this section. This process can continue until all sections have been emptied.
Schließlich wird noch vorgeschlagen, daß zwischen einer Antriebseinrichtung für die horizontale oszillierende Hubbewegung der Stange und einem Schwenkantrieb für die Stange eine Kupplung vorgesehen ist, um im Falle einer Schwenkbewegung der Stange die Antriebseinrichtung für die Hubbewegung auskoppeln zu können.Finally, it is also proposed that a coupling is provided between a drive device for the horizontal oscillating stroke movement of the rod and a swivel drive for the rod, in order to be able to decouple the drive device for the stroke movement in the event of a swivel movement of the rod.
Die Erfindung wird nachfolgend anhand eines Ausführungsbeispiels einer Filteφresse, die in der Zeichnung dargestellt ist, näher erläutert. Es zeigt:The invention is explained in more detail below with the aid of an exemplary embodiment of a filter press, which is shown in the drawing. It shows:
Fig. 1 eine Seitenansicht einer Filteφresse und Fig. 2 eine Vorderansicht der Filteφresse gemäß Figur 1.1 shows a side view of a filter press and FIG. 2 shows a front view of the filter press according to FIG. 1.
Die in den Figuren 1 und 2 dargestellte Filteφresse 1 besitzt ein Pressengestell 2, das aus unteren Ständern 3 und oberen Ständern 4 sowie letztere verbindenden Längstraversen 5 sowie zwei Tragholmen 6 besteht. Auf den Tragholmen 6 ist mit Hilfe von seitlich vorstehenden Tragpratzen 7 eine Vielzahl von vertikal ausgerichteten Filteφlatten 8 horizontal verschiebbar gelagert. Aus Gründen der Übersichtlichkeit ist von den Filteφlatten 8, deren Zahl ohne weiteres 30 erreichen kann, nur eine geringe Anzahl dargestellt. Mit Hilfe eines hydraulischen Schließzylinders 9, der in dem Pressengestell 2 gelagert ist, läßt sich das Paket der Filteφlatten 8 über ein Endstück 10, das mit der letzten Filteφlatte gekoppelt ist in axiale Richtung gegen ein Kopfstück 11, das mit der ersten Filteφlatte 8 verbunden ist, in eine Schließstellung dichtend zusammenpressen.The Filteφresse 1 shown in Figures 1 and 2 has a press frame 2, which consists of lower stands 3 and upper stands 4 and the longitudinal beams 5 connecting the latter and two support bars 6. A plurality of vertically aligned Filteφlatten 8 is mounted horizontally displaceably on the support bars 6 with the aid of laterally projecting support brackets 7. For reasons of clarity, only a small number is shown of the Filteφlatten 8, the number of which can easily reach 30. With the help of a hydraulic locking cylinder 9, which is mounted in the press frame 2, this can Pack the Filteφlatten 8 via an end piece 10, which is coupled to the last Filteφlatte in the axial direction against a head piece 11, which is connected to the first Filteφlatte 8, sealingly press into a closed position.
Figur 1 zeigt das Paket von Filteφlatten 8 in der sogenannten Öffnungsstellung, in der benachbarte Filteφlatten 8 in horizontale Richtung einen sogenannten Entleerungsabstand 12 voneinander aufweisen. Jeweils an den unteren Enden 13 jeder Filteφlatte 8 ist ein Filtertuch 14 befestigt, das über eine oberhalb der Filteφlatten 8 angeordnete und horizontal verlaufende Quertraverse 15 geführt ist. In der Öffnungsstellung des Plattenpakets nehmen die Filtertücher 14 daher die in Figur 1 gezeigte dachförmige Gestalt an. Die Quertraversen 15 sind an beiden Enden über Zugfedern 16 mit Rollen 17 verbunden, die sich auf der Oberseite der Längstraverse 5 entlang bewegen und dafür sorgen, daß das Filtertuch 14 sowohl in der Schließstellung als auch in der Öffnungsstellung der Filteφresse 1 stets gespannt ist. Benachbarte Filteφlatten 8 sind über jeweils eine Verbindungslasche 18 miteinander verbunden, durch die in Folge einer Verschiebung des Endstücks 10 sämtliche Filteφlatten 8 auf den definierten Entleerungsabstand 12 zueinander gebracht werden können.Figure 1 shows the packet of Filteφlatten 8 in the so-called open position, in which adjacent Filteφlatten 8 have a so-called emptying distance 12 from each other in the horizontal direction. A filter cloth 14 is attached to the lower ends 13 of each Filteφlatte 8, which is guided over a horizontal crossbar 15 arranged above the Filteφlatten 8 and horizontally. In the open position of the plate pack, the filter cloths 14 therefore assume the roof-like shape shown in FIG. The cross members 15 are connected at both ends via tension springs 16 with rollers 17 which move along the top of the longitudinal cross member 5 and ensure that the filter cloth 14 is always tensioned both in the closed position and in the open position of the filter press 1. Adjacent Filteφlatten 8 are each connected via a connecting bracket 18 through which all Filteφlatten 8 can be brought to the defined emptying distance 12 from each other as a result of a displacement of the end piece 10.
Eine Filterkuchenablösevorrichtung besteht aus weiteren Ständern 19, 20 und 21, auf denen in Längsrichtung der Filteφresse 1 verschiebbar eine Stange 22 gelagert ist, die zusätzlich um ihre Längsachse 23 schwenkbar ist. An der äußeren Mantelfläche 24 der Stange 22 sind U- förmige Bügel 25 befestigt, deren Anzahl der Zahl der Quertraversen 15 entspricht.A filter cake detaching device consists of further stands 19, 20 and 21, on which a rod 22 is slidably mounted in the longitudinal direction of the filter press 1 and which is additionally pivotable about its longitudinal axis 23. U-shaped brackets 25, the number of which corresponds to the number of cross members 15, are fastened to the outer lateral surface 24 of the rod 22.
Figur 1 zeigt die Bügel 25 in einer Position, in der diese die seitlich über die Filteφlatten 8 vorstehenden Enden 26 der Quertraversen 15 umfassen. Der Ansicht gemäß Figur 2 läßt sich entnehmen, daß die Bügel 25 durch Verschwenken der Stange 22 auch in eine gleichfalls dargestellte Stellung überführbar sind, in der der Eingriff mit den Quertraversen 15 aufgehoben ist. Diese Stellung wird dann eingenommen, wenn die Filteφlatten 8 sich in Schließstellung befinden und die Abstände zwischen den Mittelebenen benachbarter Bügel 25 nicht mit den Abständen benachbarter Quertraversen 15 übereinstimmen.Figure 1 shows the bracket 25 in a position in which they include the laterally projecting beyond the Filteφlatten 8 ends 26 of the cross members 15. The view according to FIG. 2 shows that the brackets 25 can also be moved into a position likewise shown, in which the engagement with the cross members 15 is released, by pivoting the rod 22. This position is assumed when the Filteφlatten 8 are in the closed position and the distances between the center planes of adjacent brackets 25 do not match the distances between adjacent cross members 15.
Die Verdrehung der Stangen 22 erfolgt mit Hilfe der Schwenkantriebe 27, wohingegen die oszillierende Hubbewegung in horizontale Richtung mit Hilfe von Hubantrieben 28 durchgeführt wird, die über Kupplungen 29 mit der Stange 22 verbunden sind.The rods 22 are rotated with the aid of the swivel drives 27, whereas the oscillating lifting movement in the horizontal direction is carried out with the aid of lifting drives 28 which are connected to the rod 22 via couplings 29.
Um in den Totpunkten der Hubbewegung der Stange 22 die einen Hub in der Größe des Entleerungsabstandes 12 aufweist eine möglichst große Beschleunigung auf die zusammen mit den Quertraversen 15 bewegten Filtertücher 14 zu erzeugen, wird die Hubbewegung in beide Richtungen durch jeweils ein Anschlagelement 30 begrenzt.In order to achieve the greatest possible acceleration to the total at the dead centers of the stroke movement of the rod 22, the one stroke has the size of the emptying distance 12 To produce moving filter cloths 14 with the cross members 15, the lifting movement is limited in both directions by a stop element 30 in each case.
Bei der oszillierenden Hin- und Herbewegung der Stange 22, der damit verbundenen Bügel 25 sowie der angekoppelten Quertraversen 15 bewirkt, daß jeweils eine Hälfte des Filtertuchs 14 - ausgehend von der zu einer vertikalen Ebene symmetrischen Situation gemäß Figur 1 - in eine senkrechte Lage überführt wird, in der das Filtertuch 14 an der zugeordneten Filteφlatte 8 zur Anlage kommt. Hingegen wird die andere Hälfte des Filtertuchs in eine stärkere Schräglage als in der Ausgangsstellung gebracht, wobei der Neigungswinkel nahezu verdoppelt wird. Der Abwurf des Filterkuchens 31 erfolgt in der Regel in dem Moment, in dem die Anschlagelemente 30 in Aktion treten, wodurch eine besonders große Beschleunigung auf den Filterkuchen 31 wirkt und dieser zunächst ungefähr in senkrechte Richtung zu dem Filtertuch 14 abgeworfen wird. Die Ablösung des Filterkuchens 31 von der gegenüberliegenden Hälfte des Filtertuchs 14 erfolgt üblicherweise in der gegenüberliegenden Totpunktlage der zugehörigen Quertraverse 15.During the oscillating back and forth movement of the rod 22, the brackets 25 connected to it and the coupled crossbeams 15, one half of the filter cloth 14 - starting from the situation symmetrical to a vertical plane according to FIG. 1 - is brought into a vertical position , in which the filter cloth 14 comes to rest against the associated filter plate 8. In contrast, the other half of the filter cloth is brought into a more inclined position than in the starting position, the angle of inclination being almost doubled. The filter cake 31 is usually ejected at the moment when the stop elements 30 come into action, as a result of which a particularly great acceleration acts on the filter cake 31 and is initially thrown off approximately in the vertical direction to the filter cloth 14. The filter cake 31 is usually detached from the opposite half of the filter cloth 14 in the opposite dead center position of the associated crossbar 15.
Bei einer Filteφresse die aus einer großen Anzahl von Filteφlatten 8 besteht, erfolgt die Entleerung der Filterkammern in der Regel sektionsweise, da der Raumbedarf des geöffneten Filteφlattenpakets ansonsten zu groß wäre. Da auch die Filterkuchenabwurfeinrichtung in diesem Fall lediglich auf die Filteφlatten 8 einer geöffneten Sektion wirken muß, sind die Bügel 25 unterschiedlicher Sektionen auf der äußeren Mantelfläche der Stange 22 versetzt angeordnet, so daß immer nur die Bügel 25 der gerade geöffneten und zu entleerenden Sektion mit den zugehörigen Quertraversen 15 in Eingriff sind. In the case of a filter press consisting of a large number of filter plates 8, the filter chambers are generally emptied section by section, since the space required for the opened filter plate package would otherwise be too great. Since the filter cake discharge device in this case only has to act on the Filteφlatten 8 of an open section, the bracket 25 of different sections are staggered on the outer surface of the rod 22, so that only the bracket 25 of the section just opened and to be emptied with the associated cross members 15 are engaged.

Claims

Patentansprüche : Claims:
1. Filteφresse (1) zur Filtration von Suspensionen mit einem Paket von vertikal ausgerichteten Filteφlatten (8), die paarweise jeweils eine Filterkammer zwischen sich einschließen, die jeweils beidseitig von einem Filtertuch (14) begrenzt wird, das ausgehend von den unteren Enden (13) der Filteφlatten (8) den Filterspiegel überdeckend über eine oberhalb der Filteφlatten (8) angeordnete Quertraverse (15) geführt ist, die in vertikale Richtung bewegbar ist, wenn benachbarte Filteφlatten (8) von einer Schließstellung in der die Suspension in die abgedichtete Filterkammer einführbar ist, in eine Öffnungsstellung überführt werden, in denen die Filteφlatten (8) in horizontale Richtung einen Entleerungsabstand (12) zueinander aufweisen und das Filtertuch (14) eine Dachform einnimmt, wobei die Filteφresse (1) des weiteren mit einer Abwurfvorrichtung für an dem Filtertuch (14) anhaftenden Filterkuchen (31) versehen ist, mit der das Filtertuch (14) oszillierend bewegbar ist, dadurch gekennzeichnet, daß die Quertraversen (15) in horizontale Richtung oszillierend bewegbar sind.1. Filteφresse (1) for the filtration of suspensions with a package of vertically aligned Filteφlatten (8), each pair in pairs enclose a filter chamber between them, each being delimited on both sides by a filter cloth (14) which, starting from the lower ends (13 ) the Filteφlatten (8) covering the filter mirror is guided over a crossbar (15) arranged above the Filteφlatten (8), which is movable in the vertical direction when adjacent Filteφlatten (8) from a closed position in which the suspension can be inserted into the sealed filter chamber is transferred to an open position in which the Filteφlatten (8) have a drainage distance (12) to each other in the horizontal direction and the filter cloth (14) takes a roof shape, the Filteφresse (1) further with a discharge device for on the filter cloth (14) adhering filter cake (31) is provided with which the filter cloth (14) can be moved in an oscillating manner, dad characterized by the fact that the crossbeams (15) can be moved in an oscillating manner in the horizontal direction.
2. Filteφresse nach Anspruch 1, dadurch gekennzeichnet, daß der Hub der horizontalen Bewegung der Quertraversen (15) im wesentlichen dem Entleerungsabstand (12) entspricht.2. Filteφresse according to claim 1, characterized in that the stroke of the horizontal movement of the cross members (15) corresponds essentially to the emptying distance (12).
3. Filteφresse nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die horizontale Bewegung der Querstangen (15) in den Totpunkten jeweils durch ein Anschlagelement (30) begrenzt ist.3. Filteφresse according to claim 1 or 2, characterized in that the horizontal movement of the cross bars (15) in the dead center is limited by a stop element (30).
4. Filteφresse nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß die Quertraversen (15) der Filteφlatten (8) zumindest einer Sektion der Filteφresse (1) gleichzeitig oszillierend bewegbar sind.4. Filteφresse according to one of claims 1 to 3, characterized in that the cross members (15) of the Filteφlatten (8) at least one section of the Filteφresse (1) are simultaneously oscillatingly movable.
5. Filteφresse nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß die Quertraversen (15) während der oszillierenden Bewegung mit jeweils einem Bügel (25) koppelbar sind, die an einer in Längsrichtung der Filteφresse (1) über den Filteφlatten (8) verlaufenden in axiale Richtung oszillierend bewegbaren Stange (22) befestigt sind.5. Filteφresse according to one of claims 1 to 4, characterized in that the cross members (15) during the oscillating movement with a bracket (25) can be coupled, which in a longitudinal direction of the Filteφresse (1) over the Filteφlatten (8) extending in the axial direction oscillating rod (22) are attached.
6. Filteφresse nach Anspruch 5, dadurch gekennzeichnet, daß die Stange (22) mit Bügeln (25) für die Quertraversen (15) sämtlicher Sektionen der Filteφresse (1) versehen ist, wobei die Bügel (25) unterschiedlicher Sektionen in Umfangsrichtung der Stange (22) um einen Winkel versetzt angeordnet sind, und die Stange (22) um ihre Längsachse (23) schwenkbar ist.6. Filteφresse according to claim 5, characterized in that the rod (22) with brackets (25) for the crossbeams (15) of all sections of the Filteφresse (1) is provided, the brackets (25) of different sections being offset by an angle in the circumferential direction of the rod (22), and the rod (22) being pivotable about its longitudinal axis (23).
7. Filteφresse nach Anspruch 6, dadurch gekennzeichnet, daß zwischen einer7. Filteφresse according to claim 6, characterized in that between one
Antriebseinrichtung (28) für die oszillierende horizontale Bewegung der Stange (22) und einem Schwenkantrieb (27) für die Stange (22) eine Kupplung (29) vorhanden ist. Drive device (28) for the oscillating horizontal movement of the rod (22) and a swivel drive (27) for the rod (22) a clutch (29) is present.
PCT/EP2001/013381 2000-12-12 2001-11-20 Filter press comprising a cake ejecting device WO2002047788A1 (en)

Priority Applications (1)

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AU2002219121A AU2002219121A1 (en) 2000-12-12 2001-11-20 Filter press comprising a cake ejecting device

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10061918A DE10061918B4 (en) 2000-12-12 2000-12-12 Filter press with a cake throw-off device
DE10061918.5 2000-12-12

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DE (1) DE10061918B4 (en)
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Publication number Priority date Publication date Assignee Title
CN104492139A (en) * 2015-01-09 2015-04-08 四川大学 Filter cloth cleaning device of filter press
CN108249731A (en) * 2018-05-04 2018-07-06 湖北合加环境设备有限公司 The self-locking device and filter plate of electro-osmosis sludge high-dry dewaterer filter chamber
TWI743957B (en) 2020-08-21 2021-10-21 台灣卜力斯股份有限公司 Filter press with left and right folding function of filter cloth

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US4209404A (en) * 1975-05-22 1980-06-24 Ngk Insulators, Ltd. Filter press
US4558641A (en) * 1983-12-07 1985-12-17 Kurita Machinery Manufacturing Company Limited Apparatus for oscillating filter cloth of filter press
US4710293A (en) * 1985-12-09 1987-12-01 Envirotech Corporation Filter cloth cake removal device
DE3933740A1 (en) * 1989-10-10 1991-04-11 Rittershaus & Blecher Gmbh FILTER PRESS

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JPH01207104A (en) * 1988-02-15 1989-08-21 Ishigaki Kiko Kk Filter cloth vibrator in filter press
GB9316187D0 (en) * 1993-08-04 1993-09-22 Edwards & Jones Filter presses
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Publication number Priority date Publication date Assignee Title
US3622005A (en) * 1968-11-05 1971-11-23 Kurita Machinery Manuf Apparatus for automatically shaking filter cake in a filter press
US4209404A (en) * 1975-05-22 1980-06-24 Ngk Insulators, Ltd. Filter press
US4558641A (en) * 1983-12-07 1985-12-17 Kurita Machinery Manufacturing Company Limited Apparatus for oscillating filter cloth of filter press
US4710293A (en) * 1985-12-09 1987-12-01 Envirotech Corporation Filter cloth cake removal device
DE3933740A1 (en) * 1989-10-10 1991-04-11 Rittershaus & Blecher Gmbh FILTER PRESS

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104492139A (en) * 2015-01-09 2015-04-08 四川大学 Filter cloth cleaning device of filter press
CN108249731A (en) * 2018-05-04 2018-07-06 湖北合加环境设备有限公司 The self-locking device and filter plate of electro-osmosis sludge high-dry dewaterer filter chamber
CN108249731B (en) * 2018-05-04 2023-06-13 启迪合加新能源汽车有限公司 Self-locking device and filter plate of filter chamber of electroosmosis sludge high-dry dehydrator
TWI743957B (en) 2020-08-21 2021-10-21 台灣卜力斯股份有限公司 Filter press with left and right folding function of filter cloth

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AU2002219121A1 (en) 2002-06-24
DE10061918B4 (en) 2006-04-27
DE10061918A1 (en) 2002-06-27

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