EP2188057B1 - Rapping device for collector electrodes in electrostatic filters - Google Patents

Rapping device for collector electrodes in electrostatic filters Download PDF

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Publication number
EP2188057B1
EP2188057B1 EP08830979A EP08830979A EP2188057B1 EP 2188057 B1 EP2188057 B1 EP 2188057B1 EP 08830979 A EP08830979 A EP 08830979A EP 08830979 A EP08830979 A EP 08830979A EP 2188057 B1 EP2188057 B1 EP 2188057B1
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EP
European Patent Office
Prior art keywords
anvil
rapping
electrodes
leg
precipitation
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EP08830979A
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German (de)
French (fr)
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EP2188057A1 (en
Inventor
Armin Burau
Martin Zinselmeyer
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Huttenwerke Krupp Mannesmann GmbH
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Huttenwerke Krupp Mannesmann GmbH
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
    • B03C3/34—Constructional details or accessories or operation thereof
    • B03C3/74—Cleaning the electrodes
    • B03C3/76—Cleaning the electrodes by using a mechanical vibrator, e.g. rapping gear ; by using impact
    • B03C3/761—Drive-transmitting devices therefor, e.g. insulated shafts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
    • B03C3/02—Plant or installations having external electricity supply
    • B03C3/04—Plant or installations having external electricity supply dry type
    • B03C3/08—Plant or installations having external electricity supply dry type characterised by presence of stationary flat electrodes arranged with their flat surfaces parallel to the gas stream
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
    • B03C3/34—Constructional details or accessories or operation thereof
    • B03C3/40—Electrode constructions
    • B03C3/45—Collecting-electrodes
    • B03C3/47—Collecting-electrodes flat, e.g. plates, discs, gratings

Definitions

  • the invention relates to a device for knocking a series of precipitation electrodes in an electrostatic precipitator according to the preamble of claim 1.
  • Electrostatic precipitators are used for example in dedusting of sintering machines.
  • Such a knocking device is z. B. from the EP 0 398 476 B1 or the US 3,165,388 A known.
  • the knock-down electrodes of this knocking device consist of vertically arranged in a row strip-shaped plates, which are suspended at their upper ends.
  • the series can have up to ten precipitation electrodes.
  • the strip-shaped plates are guided at their lower end in a trained as a tapping rod ladder-like frame between transverse webs as anvils.
  • the knock-side ends of the collecting electrodes are firmly connected to the respective knock-side anvils via an elastic element.
  • the removal of the precipitated dust from the electrodes is done in such a way that the electrode row is exposed from one side to a jerky pulse with a hammer on the beater bar.
  • this impulse causes the precipitating electrodes to oscillate simultaneously and with the same pulse strength, so that the dust is released from the surface of the electrodes and falls off.
  • the efficiency of the knocking depends essentially on the energy transferred to the individual collecting electrodes. Often, the energy introduced into the individual electrodes is very heterogeneous, ie the energy introduced into the individual plates decreases sharply towards the end of the electrode row, so that the electrodes insufficiently freed from dust. This occurs, for. B. on when the collecting electrodes have no or only loose contact with the respective anvils.
  • the energy input into the individual electrode plates should be uniformed in the known tapping device and the efficiency of the cleaning should be improved.
  • the disadvantage of this knocking device is the one that the fact that the electrode in the leadership of the knocking rod can no longer resonate on the fixed connection between the collecting electrode and anvil, but comes to rest again directly after the initiation of the impact pulse.
  • Another disadvantage is that the introduced impact pulse is subjected to the precipitation electrode by the intermediate elastic element of a damping and so not the full impact energy is introduced into the electrodes, with the result that the cleaning performance is not optimal.
  • a further disadvantage is that a free thermal expansion of the collecting electrodes in the longitudinal direction is no longer given, since the plates are clamped at their upper and lower ends. This can lead to a bulging of the plates during operation, with the consequence of a reduced separation efficiency and in extreme cases a short circuit.
  • the object of the invention is therefore to provide a device for knocking a number of collecting electrodes, with the one hand, a uniform entry of the impact energy is ensured in the electrode plates and on the other hand, a high cleaning performance during tapping and a free thermal expansion in the longitudinal direction of the plates is achieved.
  • the knocking device is characterized in that between the knock side facing each precipitation electrode and the subsequent anvil, a gap is provided in which an elastic spring element is arranged with a predetermined spring constant, which on one side with either the precipitation electrode or connected to the anvil is adapted to allow a largely free swinging of the collecting electrodes between the anvils when the impact pulse occurs and to move back to the rest position after the oscillation has subsided the collecting electrodes.
  • the disadvantages of the known tapping device are overcome, in addition to an efficient, d. H. Undamped and direct, initiation of the impact energy into the electrodes, a swinging of the electrodes is possible and so the cleaning performance of the collecting electrodes is optimized.
  • a free thermal expansion in the longitudinal direction of the plates is ensured, so that a loss of power due to bulging of the plates is excluded.
  • the knocking rod is designed so that at the respective anvil on the impact side facing away from the collecting electrodes, the spring elements are fixed, which press a low bias with elastic spring force, the collecting electrodes against the respective knock-side anvil.
  • the impact pulse can be introduced directly into the precipitation electrodes without loss of attenuation.
  • the spring constant must be designed so that the collecting electrodes are pressed only with a small spring force on the impact anvil, so that when initiating the impact pulse still a largely free oscillation of the electrodes is possible.
  • the collecting electrode By the impact pulse, the collecting electrode is pushed away from the anvil and compresses the spring element on the opposite anvil, which then moves the collecting electrode by the spring force back to the knocking anvil and thereby in turn receives a shock pulse, which continues the cleaning process and thus increases the efficiency.
  • the spring element is a substantially V-shaped leaf spring, which consists of two mutually angled legs. One leg is arcuate and the other leg is straight, the arcuate Leg in the resting state under spring tension at the collecting electrode and the straight leg advantageously rests against the anvil, or is connected thereto.
  • the collecting electrode 1 a series of successively arranged electrodes, is suspended eccentrically via a hole 2 at its upper end.
  • the suspension is such that the collecting electrode 1 is rotatably mounted therein.
  • the free lower end of the collecting electrode 1 is guided in a ladder-shaped knocking rod 3, which is provided with anvils 5, 5 'as cross struts ( FIG. 2 ).
  • the knocking rod 3 is fixed to a suspension 4 which holds the knocking rod in a substantially horizontal position.
  • the precipitation electrode 1 guided between the anvils 5, 5 ' is mounted via the eccentric suspension in such a way that it is constantly in contact with the impact-side anvil 5 in the rest position.
  • a gap is provided between the collecting electrode 1 and the anvil 5 'disposed opposite the knocking side, in which a spring element 6 (symbolically represented here as a helical spring) is arranged, which is fastened only on one side to the anvil 5' and in the rest position the collecting electrode 1 only presses with a slight spring force on the knock-side anvil 5.
  • a spring element 6 symbolically represented here as a helical spring
  • the anvil facing away from the knocking side is used 5 'of the respective collecting electrode 1 as an impact anvil for the respective subsequent electrode
  • the collecting electrode 1 When cleaning the collecting electrode 1 hits the impact pulse (see arrow FIG. 1 ) of the hammer, not shown here on a striking plate 7, which transmits the pulse via the anvil 5 directly to the frontal surface of the adjacent thereto collecting electrode 1 without loss of attenuation.
  • the impact pulse By the impact pulse, the collecting electrode 1 is pushed away from the anvil 5 and oscillates in the direction of the anvil 5 ', wherein the spring element 6 is elastically compressed and the collecting electrode 1 can swing back again.
  • the spring constant is designed so that only a small damping of the oscillating movement takes place, so that overall an intensive cleaning effect is achieved.
  • FIG. 3 is the spring element 6 as a detail B of the FIG. 1 shown.
  • the spring element 6 is fixed.
  • the spring element 6 is designed as a leaf spring with a bent leg 8 and a straight leg 9.
  • the leaf spring 6 according to the invention is designed so that it can be plugged onto the anvil 5 'in a simple manner and is easily replaceable.
  • the free end of the straight leg 9 has an angled leg 10, which clasps the front side of the anvil 5'.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Electrostatic Separation (AREA)
  • Photoreceptors In Electrophotography (AREA)

Abstract

The invention relates to a device for rapping a row of collector electrodes in an electrostatic precipitator, the collector electrodes consisting of strip plates suspended from their upper ends with respect to their longitudinal extension. The aim of the invention is to provide a device for rapping a row of collector electrodes which guarantees an even supply of impact energy to the electrode plates and allows a high cleaning efficiency during rapping and a free thermal expansion in the longitudinal direction of the plates. This aim is achieved in that a gap is defined between the side of every collector electrode facing away from the rapping device and the subsequent anvil. An elastic spring element having a predetermined spring rate is arranged in said gap and is connected only on one side, either to the collector electrode or to the anvil, and is suitable to allow a substantially free oscillation of the collector electrodes between the anvils after an impact momentum.

Description

Die Erfindung betrifft eine Einrichtung zum Klopfen von einer Reihe von Niederschlagselektroden in einem elektrostatischen Abscheider gemäß dem Oberbegriff des Patentanspruches 1.The invention relates to a device for knocking a series of precipitation electrodes in an electrostatic precipitator according to the preamble of claim 1.

Elektrostatische Abscheider werden beispielsweise in Entstaubungsanlagen von Sintermaschinen verwendet.Electrostatic precipitators are used for example in dedusting of sintering machines.

Der aus den Abgasen stammende Staub schlägt sich bei der elektrostatischen Abscheidung auf den Elektroden nieder und sammelt sich dort an. In regelmäßigen Abständen ist es erforderlich den niedergeschlagenen Staub von den Elektroden zu entfernen, um die Abscheiderleistung des elektrostatischen Abscheiders auf hohem Niveau zu halten: Eine solche Klopfeinrichtung ist z. B. aus der EP 0 398 476 B1 oder der US 3 165 388 A bekannt.The dust originating from the exhaust gases is deposited on the electrodes during electrostatic deposition and accumulates there. At regular intervals, it is necessary to remove the precipitated dust from the electrodes in order to keep the Abscheiderleistung the electrostatic precipitator at a high level: Such a knocking device is z. B. from the EP 0 398 476 B1 or the US 3,165,388 A known.

Die Niederschlägselektroden dieser Klopfeinrichtung bestehen aus vertikal in einer Reihe angeordneten streifenförmgen Platten, die an ihren oberen Enden aufgehängt sind. Die Reihe kann dabei bis zu zehn Niederschlagselektroden aufweisen.The knock-down electrodes of this knocking device consist of vertically arranged in a row strip-shaped plates, which are suspended at their upper ends. The series can have up to ten precipitation electrodes.

Die streifenförmigen Platten sind an ihrem unteren Ende in einem als Klopfstange ausgebildeten leitersprossenähnlichen Rahmen zwischen Querstegen als Ambossen geführt. Die klopfseitigen Enden der Niederschlagselektroden sind dabei mit den jeweiligen klopfseitigen Ambossen über ein elastisches Element fest verbunden.The strip-shaped plates are guided at their lower end in a trained as a tapping rod ladder-like frame between transverse webs as anvils. The knock-side ends of the collecting electrodes are firmly connected to the respective knock-side anvils via an elastic element.

Das Entfernen des niedergeschlagenen Staubes von den Elektroden geschieht in der Weise, dass mit einem Hammer über die Klopfstange die Elektrodenreihe von einer Seite einem stoßartigen Impuls ausgesetzt wird.The removal of the precipitated dust from the electrodes is done in such a way that the electrode row is exposed from one side to a jerky pulse with a hammer on the beater bar.

Durch diesen Impuls werden die Niederschlagselektroden im Idealfall gleichzeitig und mit gleicher Impulsstärke in Schwingung versetzt, so dass sich der Staub von der Oberfläche der Elektroden löst und abfällt.Ideally, this impulse causes the precipitating electrodes to oscillate simultaneously and with the same pulse strength, so that the dust is released from the surface of the electrodes and falls off.

Die Effizienz des Abklopfens hängt dabei wesentlich von der auf die einzelnen Niederschlagselektroden übertragenen Energie ab. Oftmals ist die in die einzelnen Elektroden eingeleitete Energie sehr heterogen, d. h. die in die einzelnen Platten eingeleitete Energie nimmt zum Ende der Elektrodenreihe stark ab, so dass die Elektroden nur unzureichend vom Staub befreit werden. Dies tritt z. B. dann auf, wenn die Niederschlagselektroden keinen oder nur losen Kontakt mit den jeweiligen Ambossen haben.The efficiency of the knocking depends essentially on the energy transferred to the individual collecting electrodes. Often, the energy introduced into the individual electrodes is very heterogeneous, ie the energy introduced into the individual plates decreases sharply towards the end of the electrode row, so that the electrodes insufficiently freed from dust. This occurs, for. B. on when the collecting electrodes have no or only loose contact with the respective anvils.

Durch die feste Verbindung des unteren Endes der Niederschlagselektroden mit dem Amboss über ein elastisches Element soll bei der bekannten Klopfeinrichtung der Energieeintrag in die einzelnen Elektrodenplatten vergleichmäßigt und der Wirkungsgrad der Abreinigung verbessert werden.Due to the firm connection of the lower end of the collecting electrodes with the anvil via an elastic element, the energy input into the individual electrode plates should be uniformed in the known tapping device and the efficiency of the cleaning should be improved.

Nachteilig bei dieser Klopfeinrichtung ist zum Einen der Umstand, dass über die feste Verbindung zwischen Niederschlagselektrode und Amboss die Elektrode in der Führung der Klopfstange nicht mehr nachschwingen kann, sondern direkt nach der Einleitung des Schlagimpulses wieder zur Ruhe kommt.The disadvantage of this knocking device is the one that the fact that the electrode in the leadership of the knocking rod can no longer resonate on the fixed connection between the collecting electrode and anvil, but comes to rest again directly after the initiation of the impact pulse.

Untersuchungen haben ergeben, dass die eingeleitete Schlagenergie beim Klopfvorgang zwar vergleichmäßigt, die Reinigungsleistung aber insgesamt im Vergleich zu schwingend gelagerten Niederschlagselektrodenplatten nachlässt.Investigations have shown that although the impact energy introduced is equalized during the knocking process, the overall cleaning performance declines in comparison to oscillating electrode plates.

Ein weiterer Nachteil besteht darin, dass der eingeleitete Schlagimpuls in die Niederschlagselektrode durch das zwischengeschaltete elastische Element einer Dämpfung unterworfen und so nicht die volle Schlagenergie in die Elektroden eingeleitet wird, mit der Folge, dass die Reinigungsleistung nicht optimal ist.Another disadvantage is that the introduced impact pulse is subjected to the precipitation electrode by the intermediate elastic element of a damping and so not the full impact energy is introduced into the electrodes, with the result that the cleaning performance is not optimal.

Weiterhin ist nachteilig, dass eine freie Wärmedehnung der Niederschlagselektroden in Längsrichtung nicht mehr gegeben ist, da die Platten an ihrem oberen und unteren Ende eingespannt sind. Dies kann im Betrieb zu einer Auswölbung der Platten führen, mit der Folge einer verringerten Abscheiderleistung und im Extremfall eines Kurzschlusses.A further disadvantage is that a free thermal expansion of the collecting electrodes in the longitudinal direction is no longer given, since the plates are clamped at their upper and lower ends. This can lead to a bulging of the plates during operation, with the consequence of a reduced separation efficiency and in extreme cases a short circuit.

Aufgabe der Erfindung ist es deshalb, eine Einrichtung zum Klopfen von einer Reihe von Niederschlagselektroden anzugeben, mit der einerseits ein gleichmäßiger Eintrag der Schlagenergie in die Elektrodenplatten gewährleistet wird und andererseits auch eine hohe Reinigungsleistung beim Abklopfen und eine freie Wärmeausdehnung in Längsrichtung der Platten erreicht wird.The object of the invention is therefore to provide a device for knocking a number of collecting electrodes, with the one hand, a uniform entry of the impact energy is ensured in the electrode plates and on the other hand, a high cleaning performance during tapping and a free thermal expansion in the longitudinal direction of the plates is achieved.

Diese Aufgabe wird nach dem Oberbegriff in Verbindung mit den kennzeichnenden Merkmalen des Anspruchs 1 gelöst. Vorteilhafte Weiterbildungen sind Gegenstand von Unteransprüchen.This object is achieved according to the preamble in conjunction with the characterizing features of claim 1. Advantageous developments are the subject of dependent claims.

Nach der Lehre der Erfindung ist die erfindungsgemäße Klopfeinrichtung dadurch gekennzeichnet, dass zwischen der klopfabgewandten Seite jeder Niederschlagselektrode und dem nachfolgenden Amboss ein Spalt vorgesehen ist, in dem ein elastisches Federelement mit einer vorbestimmten Federkonstante angeordnet ist, welches nur an einer Seite entweder mit der Niederschlagselektrode oder dem Amboss verbunden dazu geeignet ist, bei auftretendem Schlagimpuls ein weitgehend freies Schwingen der Niederschlagselektroden zwischen den Ambossen zu ermöglichen und nach Abklingen der Schwingung die Niederschlagselektroden in die Ruheposition zurückzubewegen.According to the teachings of the invention, the knocking device according to the invention is characterized in that between the knock side facing each precipitation electrode and the subsequent anvil, a gap is provided in which an elastic spring element is arranged with a predetermined spring constant, which on one side with either the precipitation electrode or connected to the anvil is adapted to allow a largely free swinging of the collecting electrodes between the anvils when the impact pulse occurs and to move back to the rest position after the oscillation has subsided the collecting electrodes.

Mit der erfindungsgemäßen Klopfeinrichtung werden die Nachteile der bekannten Klopfeinrichtung überwunden, wobei neben einer effizienten, d. h. ungedämpften und direkten, Einleitung der Schlagenergie in die Elektroden, ein Schwingen der Elektroden ermöglicht wird und so die Reinigungsleistung der Niederschlagselektroden optimiert wird.With the tapping device according to the invention, the disadvantages of the known tapping device are overcome, in addition to an efficient, d. H. Undamped and direct, initiation of the impact energy into the electrodes, a swinging of the electrodes is possible and so the cleaning performance of the collecting electrodes is optimized.

Eine freie Wärmedehnung in Längsrichtung der Platten ist gewährleistet, so dass ein Leistungsverlust durch Auswölben der Platten ausgeschlossen ist.A free thermal expansion in the longitudinal direction of the plates is ensured, so that a loss of power due to bulging of the plates is excluded.

Die Klopfstange ist dabei so ausgelegt, dass an dem jeweiligen Amboss an der schlagabgewandten Seite der Niederschlagselektroden die Federelemente befestigt sind, die über eine geringe Vorspannung mit elastischer Federkraft, die Niederschlagselektroden gegen den jeweiligen klopfseitigen Amboss drücken. Hierdurch kann der Schlagimpuls direkt ohne Dämpfungsverlust in die Niederschlagselektroden eingeleitet werden.The knocking rod is designed so that at the respective anvil on the impact side facing away from the collecting electrodes, the spring elements are fixed, which press a low bias with elastic spring force, the collecting electrodes against the respective knock-side anvil. As a result, the impact pulse can be introduced directly into the precipitation electrodes without loss of attenuation.

Die Federkonstante muss dabei so ausgelegt sein, dass die Niederschlagselektroden nur mit einer geringen Federkraft an den schlagseitigen Amboss gedrückt werden, so dass bei Einleitung des Schlagimpulses noch ein weitgehend freies Schwingen der Elektroden ermöglicht wird.The spring constant must be designed so that the collecting electrodes are pressed only with a small spring force on the impact anvil, so that when initiating the impact pulse still a largely free oscillation of the electrodes is possible.

Durch den Schlagimpuls wird die Niederschlagselektrode vom Amboss weggestoßen und komprimiert das Federelement an dem gegenüber liegenden Amboss, welches anschließend die Niederschlagselektrode durch die Federkraft wieder zum klopfseitigen Amboss bewegt und dadurch wiederum einen Schlagimpuls erhält, der den Reinigungsvorgang fortsetzt und somit den Wirkungsgrad erhöht.By the impact pulse, the collecting electrode is pushed away from the anvil and compresses the spring element on the opposite anvil, which then moves the collecting electrode by the spring force back to the knocking anvil and thereby in turn receives a shock pulse, which continues the cleaning process and thus increases the efficiency.

Erfindungsgemäß ist das Federelement eine im wesentlich V-förmig ausgebildete Blattfeder, welche aus zwei in einem Winkel zueinander stehenden Schenkeln besteht. Ein Schenkel ist bogenförmig und der andere Schenkel gerade ausgebildet, wobei der bogenförmige Schenkel im Ruhezustand unter Federspannung an der Niederschlagselektrode und der gerade Schenkel vorteilhaft an dem Amboss anliegt, bzw. damit verbunden ist.According to the invention the spring element is a substantially V-shaped leaf spring, which consists of two mutually angled legs. One leg is arcuate and the other leg is straight, the arcuate Leg in the resting state under spring tension at the collecting electrode and the straight leg advantageously rests against the anvil, or is connected thereto.

Um einen einfachen Austausch von verschlissenen oder defekten Federelementen zu ermöglichen ist nach einer vorteilhaften Weiterbildung vorgesehen, das Federelement auf den Amboss aufzustecken.In order to enable a simple exchange of worn or defective spring elements is provided according to an advantageous development, aufzustecken the spring element on the anvil.

Weitere Merkmale, Vorteile und Einzelheiten der Erfindung ergeben sich aus der nachfolgenden Beschreibung.Further features, advantages and details of the invention will become apparent from the following description.

Es zeigen:

Figur 1
erfindungsgemäße schematisch dargestellte Klopfeinrichtung,
Figur 2
Schnittdarstellung von Figur 1,
Figur 3
Detaildarstellung eines Federelementes.
In Figur 1 ist eine erfindungsgemäße Klopfeinrichtung zur elektrostatischen Abreinigung von Niederschlagselektroden schematisch dargestellt.Show it:
FIG. 1
Tapping device according to the invention shown schematically,
FIG. 2
Sectional view of FIG. 1 .
FIG. 3
Detail of a spring element.
In FIG. 1 a knocking device according to the invention for the electrostatic cleaning of collecting electrodes is shown schematically.

Die Niederschlagselektrode 1, einer Reihe von hintereinander angeordneten Elektroden, ist an ihrem oberen Ende exzentrisch über ein Loch 2 aufgehängt. Die Aufhängung ist so beschaffen, dass die Niederschlagselektrode 1 hierin drehbeweglich gelagert ist.The collecting electrode 1, a series of successively arranged electrodes, is suspended eccentrically via a hole 2 at its upper end. The suspension is such that the collecting electrode 1 is rotatably mounted therein.

Das freie untere Ende der Niederschlagselektrode 1 ist in einer leiterförmig ausgebildeten Klopfstange 3 geführt, die mit Ambossen 5, 5' als Querstreben versehen ist ( Figur 2 ). Die Klopfstange 3 ist an einer Aufhängung 4 befestigt, die die Klopfstange in einer weitgehend horizontalen Position hält.The free lower end of the collecting electrode 1 is guided in a ladder-shaped knocking rod 3, which is provided with anvils 5, 5 'as cross struts ( FIG. 2 ). The knocking rod 3 is fixed to a suspension 4 which holds the knocking rod in a substantially horizontal position.

Die zwischen den Ambossen 5, 5' geführte Niederschlagselektrode 1 ist über die exzentrische Aufhängung so gelagert, dass diese am schlagseitigen Amboss 5 in Ruhestellung ständig in Kontakt steht.The precipitation electrode 1 guided between the anvils 5, 5 'is mounted via the eccentric suspension in such a way that it is constantly in contact with the impact-side anvil 5 in the rest position.

Erfindungsgemäß ist zwischen der Niederschlagselektrode 1 und dem der klopfabgewandten Seite angeordneten Amboss 5' ein Spalt vorgesehen, in dem ein Federelement 6 (hier symbolisch als Schraubenfeder dargestellt) angeordnet ist, welches nur einseitig am Amboss 5' befestigt ist und in Ruhestellung die Niederschlagselektrode 1 nur mit leichter Federkraft an den klopfseitigen Amboss 5 drückt. Hierbei dient der der Klopfseite abgewandte Amboss 5' der jeweiligen Niederschlagselektrode 1 als Schlagamboss für die jeweils nachfolgende ElektrodeAccording to the present invention, a gap is provided between the collecting electrode 1 and the anvil 5 'disposed opposite the knocking side, in which a spring element 6 (symbolically represented here as a helical spring) is arranged, which is fastened only on one side to the anvil 5' and in the rest position the collecting electrode 1 only presses with a slight spring force on the knock-side anvil 5. In this case, the anvil facing away from the knocking side is used 5 'of the respective collecting electrode 1 as an impact anvil for the respective subsequent electrode

Durch die einseitige Befestigung am Amboss 5' wird eine freie Längendehnung der Niederschlagselektrode 1 bei Erwärmung gewährleistet.Due to the one-sided attachment to the anvil 5 ', a free elongation of the collecting electrode 1 is ensured when heated.

Bei der Abreinigung der Niederschlagselektrode 1 trifft der Schlagimpuls (siehe Pfeildarstellung Figur 1 ) des hier nicht dargestellten Hammers auf eine Schlagplatte 7, die den Impuls über den Amboss 5 direkt auf die stirnseitige Fläche der daran anliegenden Niederschlagselektrode 1 ohne Dämpfungsverlust überträgt. Durch den Schlagimpuls wird die Niederschlagselektrode 1 vom Amboss 5 weggestoßen und schwingt in Richtung des Ambosses 5', wobei das Federelement 6 elastisch zusammengedrückt wird und die Niederschlagselektrode 1 wieder zurück schwingen lässt. Die Federkonstante ist so ausgelegt, dass nur eine geringe Dämpfung der Schwingbewegung erfolgt, so dass insgesamt eine intensive Abreinigungswirkung erzielt wird.When cleaning the collecting electrode 1 hits the impact pulse (see arrow FIG. 1 ) of the hammer, not shown here on a striking plate 7, which transmits the pulse via the anvil 5 directly to the frontal surface of the adjacent thereto collecting electrode 1 without loss of attenuation. By the impact pulse, the collecting electrode 1 is pushed away from the anvil 5 and oscillates in the direction of the anvil 5 ', wherein the spring element 6 is elastically compressed and the collecting electrode 1 can swing back again. The spring constant is designed so that only a small damping of the oscillating movement takes place, so that overall an intensive cleaning effect is achieved.

In Figur 3 ist das Federelement 6 als Detaildarstellung B der Figur 1 dargestellt. An dem der Klopfseite abgewandten Amboss 5' ist erfindungsgemäß das Federelement 6 befestigt. Das Federelement 6 ist als Blattfeder ausgeführt mit einem gebogenen Schenkel 8 und einem geraden Schenkel 9. Die Blattfeder 6 ist erfindungsgemäß so ausgebildet, dass diese auf den Amboss 5' in einfacher Weise aufgesteckt werden kann und so leicht auswechselbar ist.In FIG. 3 is the spring element 6 as a detail B of the FIG. 1 shown. At the remote from the knock side anvil 5 'according to the invention, the spring element 6 is fixed. The spring element 6 is designed as a leaf spring with a bent leg 8 and a straight leg 9. The leaf spring 6 according to the invention is designed so that it can be plugged onto the anvil 5 'in a simple manner and is easily replaceable.

Zur Sicherung gegen Abrutschen vom Amboss 5' weist das freie Ende des geraden Schenkels 9 einen abgewinkelten Schenkel 10 auf, der die Stirnseite des Ambosses 5' umklammert.To protect against slipping off the anvil 5 ', the free end of the straight leg 9 has an angled leg 10, which clasps the front side of the anvil 5'.

BezugszeichenlisteLIST OF REFERENCE NUMBERS

Nr.No. Bezeichnungdescription 11 NiederschlagselektrodeCollecting electrode 22 Lochhole 33 Klopfstangeknock rod 44 Aufhängungsuspension 5, 5'5, 5 ' Ambossanvil 66 Federelementspring element 77 Schlagplatteimpact plate 88th gebogener Schenkelcurved thigh 99 gerader Schenkelstraight thigh 1010 abgewinkelter SchenkelAngled thigh

Claims (7)

  1. Device for rapping a row of precipitation electrodes (1) in an electrostatic separator, wherein the precipitation electrodes (1) comprise strip-shaped plates which are suspended lengthwise from their upper ends and wherein the device comprises a horizontal rapping rod (3) constructed as a ladder-like frame with cross members (5, 5') forming anvils, with the lower ends of the precipitation electrodes (1) each guided in the frame and contacting in a rest position the respective anvil (5) with their impact-side, and a hammer for striking the rapping rod (3) from one side, characterized in that between the side of each precipitation electrode (1) facing away from the impact and the following anvil (5'), a gap is provided, in which there is arranged an elastic spring element (6), having a predetermined spring constant, which is connected only on one side either to the precipitation electrode (1) or the anvil (5') and is suitable, on occurrence of an impact pulse, for enabling substantially unimpeded oscillation of the precipitation electrodes (1) between the anvils (5, 5') and for returning the precipitation electrodes (1) to the rest position after the oscillation has decayed.
  2. Rapping device according to claim 1, characterized in that the spring element (6) is a substantially V-shaped leaf spring, which consists essentially of two legs (8, 9) enclosing an angle.
  3. Rapping device according to claim 2, characterized in that the leg (8) is curved and the leg (9) is straight.
  4. Rapping device according to claim 3, characterized in that in the rest position the curved leg (8) contacts the precipitation electrode (1) under spring tension and the straight leg (9) contacts the anvil (5').
  5. Rapping device according to one of the claims 1 - 4, characterized in that the spring element (6) is connected to the anvil (5').
  6. Rapping device according to claim 5, characterized in that the spring element (6) is attached to the anvil (5').
  7. Rapping device according to claim 6, characterized in that the free end of the straight leg (9) has an angled leg (10) which clasps the front edge of the anvil (5').
EP08830979A 2007-09-14 2008-09-11 Rapping device for collector electrodes in electrostatic filters Not-in-force EP2188057B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007044838A DE102007044838B4 (en) 2007-09-14 2007-09-14 Knocking device for precipitation electrodes in electrostatic precipitators
PCT/DE2008/001555 WO2009033480A1 (en) 2007-09-14 2008-09-11 Rapping device for collector electrodes in electrostatic filters

Publications (2)

Publication Number Publication Date
EP2188057A1 EP2188057A1 (en) 2010-05-26
EP2188057B1 true EP2188057B1 (en) 2012-03-21

Family

ID=40344884

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08830979A Not-in-force EP2188057B1 (en) 2007-09-14 2008-09-11 Rapping device for collector electrodes in electrostatic filters

Country Status (9)

Country Link
US (1) US20100319546A1 (en)
EP (1) EP2188057B1 (en)
AT (1) ATE550102T1 (en)
AU (1) AU2008298118B2 (en)
BR (1) BRPI0816762A2 (en)
CA (1) CA2699246A1 (en)
DE (1) DE102007044838B4 (en)
UA (1) UA97012C2 (en)
WO (1) WO2009033480A1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101116365B1 (en) * 2009-08-12 2012-03-09 한국전력공사 Electrostatic separation of unburned carbon from fly ash using conductive induction type of ejector tribocharger
CN104437875A (en) * 2014-12-18 2015-03-25 泰兴电除尘设备厂有限公司 Strengthened type cathode rapping anvil
RU197949U1 (en) * 2020-03-23 2020-06-08 Общество с ограниченной ответственностью "ФИНГО-Комплекс" ELECTRIC FILTER
CN115318439B (en) * 2022-10-12 2022-12-27 启东市金猴除尘成套设备有限公司 Complete equipment for desulfurization, denitrification and dedusting of combustion liquefied gas

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DE495305C (en) * 1930-04-05 Siemens Schuckertwerke Akt Ges Arrangement for cleaning the electrodes of electrical gas cleaning systems
US1981455A (en) * 1932-03-14 1934-11-20 Int Precipitation Co Electrical precipitator
US2123464A (en) * 1936-08-28 1938-07-12 Research Corp Electrode rapping
US2547573A (en) * 1949-04-18 1951-04-03 Research Corp Rapper for electrical precipitation apparatus
ES271217A1 (en) * 1960-10-20 1961-12-16 A B Svenska Falktfabriken Device for the sustainability of ballots for electrodes of electrofilters (Machine-translation by Google Translate, not legally binding)
US3149937A (en) * 1961-10-31 1964-09-22 American Air Filter Co Plate electrode assembly
US3483669A (en) * 1965-09-13 1969-12-16 Koppers Co Inc Dust dislodging system for electrostatic precipitators
US3605915A (en) * 1969-04-11 1971-09-20 Koppers Co Inc Pneumatic rapper for electrostatic precipitators
GB1330612A (en) * 1972-02-18 1973-09-19 Smidth & Co As F L Electrostatic dust precipitator
DE2711858C2 (en) * 1977-03-18 1984-12-13 Saarbergwerke AG, 6600 Saarbrücken Electrostatic precipitator with collecting electrodes
DE3511059A1 (en) * 1985-03-27 1986-10-02 Metallgesellschaft Ag, 6000 Frankfurt INSULATION DEVICE
GB8522312D0 (en) * 1985-09-09 1985-10-16 Dresser Uk Ltd Electro-precipitation
GB2185911A (en) * 1986-01-30 1987-08-05 Dresser Uk Ltd Variable intensity rapping
GB2231513A (en) 1989-05-08 1990-11-21 Fls Milj A S Rapping mechanism
DK107692A (en) * 1992-08-28 1994-03-01 Fls Milj A S Banking mechanism for knocking an electrofilter's electrodes
SE512249C2 (en) * 1995-06-20 2000-02-21 Flaekt Ab Device at an electrofilter for hanging, and knocking out precipitating electrodes
US6336961B1 (en) * 1997-06-23 2002-01-08 Sumitomo Heavy Industries, Ltd. Electric precipitator and electric precipitation electrode used for the same
US20050210902A1 (en) * 2004-02-18 2005-09-29 Sharper Image Corporation Electro-kinetic air transporter and/or conditioner devices with features for cleaning emitter electrodes

Also Published As

Publication number Publication date
US20100319546A1 (en) 2010-12-23
DE102007044838B4 (en) 2009-07-30
WO2009033480A1 (en) 2009-03-19
DE102007044838A1 (en) 2009-04-16
ATE550102T1 (en) 2012-04-15
UA97012C2 (en) 2011-12-26
AU2008298118B2 (en) 2012-04-19
EP2188057A1 (en) 2010-05-26
AU2008298118A1 (en) 2009-03-19
BRPI0816762A2 (en) 2015-03-24
CA2699246A1 (en) 2009-03-19

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