EP0106909B1 - Filterplatte - Google Patents

Filterplatte Download PDF

Info

Publication number
EP0106909B1
EP0106909B1 EP82109790A EP82109790A EP0106909B1 EP 0106909 B1 EP0106909 B1 EP 0106909B1 EP 82109790 A EP82109790 A EP 82109790A EP 82109790 A EP82109790 A EP 82109790A EP 0106909 B1 EP0106909 B1 EP 0106909B1
Authority
EP
European Patent Office
Prior art keywords
filter plate
hollow rivet
plate according
passage opening
opening
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
EP82109790A
Other languages
German (de)
French (fr)
Other versions
EP0106909A1 (en
Inventor
Wolfgang Welser
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Welser Profile AG AT
Original Assignee
Josef Welser oHG
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 Josef Welser oHG filed Critical Josef Welser oHG
Priority to EP82109790A priority Critical patent/EP0106909B1/en
Priority to AT82109790T priority patent/ATE17662T1/en
Priority to DE8282109790T priority patent/DE3268874D1/en
Priority to JP58163395A priority patent/JPS5982954A/en
Priority to BR8305669A priority patent/BR8305669A/en
Priority to DK485783A priority patent/DK164574C/en
Publication of EP0106909A1 publication Critical patent/EP0106909A1/en
Application granted granted Critical
Publication of EP0106909B1 publication Critical patent/EP0106909B1/en
Expired legal-status Critical Current

Links

Images

Classifications

    • 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
    • B03C3/86—Electrode-carrying means
    • 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

Definitions

  • the invention relates to a filter plate for hanging attachment in an electric filter system, with at least one overhead opening for a support rod.
  • Such filter plates are usually hung on handrails.
  • Spray electrodes are arranged adjacent to the filter plates.
  • the contaminants are electrically charged from contaminated gases and passed between the filter plates and the spray electrodes and collected on the surfaces of the filter plates.
  • the filter plates are then caused to vibrate by knocking at relatively short intervals, so that the impurities collected on them fall down and can be carried away.
  • the filter plates are articulated on the handrails and are penetrated by a so-called knocking rod in a lower area.
  • the invention is based on the technical problem of designing the suspension areas in a filter plate of the type mentioned at the outset to be mechanically stronger.
  • the problem posed is solved according to the invention in that the push-through opening is reinforced with a metallic hollow rivet lining the push-through opening.
  • the loads in the area of the insertion opening are distributed over a large area. Local overloads are avoided.
  • the specific surface loading of the filter plate in the suspension area is advantageously reduced on the one hand and the specific surface loading of the support rod on the other hand.
  • the risk of cracks in the area of the insertion opening has been eliminated, and with it the danger of dangerous short circuits. Nevertheless, it is ensured that the filter plate can be suspended on the handrails in the desired manner.
  • This solution is also very simple and inexpensive to manufacture.
  • the reinforcement of the suspension areas can be produced particularly easily if, according to claim 3, the hollow rivet consists of a tube section which is riveted on both sides of the plate.
  • the tube wall thickness With the tube wall thickness, the size of the contact surface on the support rod can be determined in a simple manner, while the length of the pipe section, the area can be determined in which a frictional friction connection is formed between the hollow rivet and the plate.
  • FIG. 1 Another expedient embodiment of the invention, in which at least one push-through opening at the bottom is provided for a knocking rod, is characterized in that the push-through opening at the bottom for the knocking rod is also reinforced with a hollow rivet.
  • the mechanical loads in this area are lower than in the actual hanging area, it is desirable to provide appropriate reinforcement here as well, by means of which the mechanical wear of the filter plate is kept low even during longer operating times.
  • Another important feature according to claim 7 is that several top and bottom through openings, each reinforced with a hollow rivet, are provided in the filter plate.
  • the hollow rivet in the respective insertion opening is primarily responsible for the mechanical resilience in this area, it can be expedient according to claim 8 to form the hollow rivet from a high-strength steel. It is favorable that the hollow rivet can easily consist of a different metal than the filter plate itself, the material of which is selected primarily from an electrical point of view or with regard to corrosion resistance against aggressive gases.
  • the push-through opening and the hollow rivet have a cross-sectional shape that deviates from a round shape, preferably oval.
  • the holding rods for taking up the weight can have a cross-sectional shape that deviates from the round shape and since it can be expedient for a free oscillation of the filter plate to go from a round cross-sectional shape in order to achieve a pendulum movement around the holding rod enable and at the same time exclude that the plate can make impermissibly large swings across the hanging direction.
  • Another expedient embodiment is characterized by the use of riveted hydraulic steel tube sections as reinforcements for the push-through openings of the filter plate.
  • Such pipe sections can be made from commercially available pipes, which is inexpensive and inexpensive to manufacture. The invention is explained below with reference to the drawing.
  • a filter plate 1 made of sheet metal with a wall thickness d of e.g. 1.5 to 2 mm recognizable, as used in electrostatic filter systems for contaminated gases or air.
  • the filter plate 1 hangs in the systems in the position shown in FIG. 1 and is mounted on holding rods 7 which reach through insertion openings 2 in the filter plate 1.
  • a hollow rivet 3 is formed as a reinforcement in each insertion opening 2 and limits the actual opening 4 for pushing through the holding rod 7.
  • insertion openings 5 are formed, in which hollow rivets 3 are also attached, which limit openings 4 there for pushing through knocking rods 7.
  • the filter plate 1 is equipped with bends or embossments that increase its structural strength and surface.
  • Fig. 3 shows a filter plate 1 suspended on holding rods 7 in cross section.
  • a filter plate 1 suspended on holding rods 7 in cross section.
  • the holding rods 7 lie together in a support device 8 formed by 2 U-profiles.
  • the tapping device 10 consists of two mutually parallel rails, between which there are tapping rods 7 ′ corresponding to the holding rods 7.
  • the knocking device 10 is triggered by a knocker, not shown, in order to set the filter plates 1 in vibration via the knocking rods 7 '.
  • the associated non-vibrating spray electrodes are not shown.
  • Fig. 4 it can be seen in detail how the insertion opening 2 for the holding rod 7 and also the insertion opening 5 for the tapping rod 7 'is reinforced with a hollow rivet 3 to prevent mechanical wear due to the static load due to the weight of the plate (this can be several 100 kg) and to be resistant due to the dynamic loads when the plate vibrates.
  • the hollow rivet 3 is riveted to both surfaces 16, 17 of the plate of the filter plate 1 and is therefore non-positively in the area of the push-through opening 2 as well as on both surfaces 16, 17.
  • the riveting is designed such that a cylindrical support area 13 is formed in the area of the opening 4, from which adjoining support surface sections 14 widen to the outside on both sides.
  • the reaction force from the bearing load on a holding rod 7 inserted through the opening 4 is not only introduced into the local area of the push-in opening 2, which is opposite the supporting point on the holding bar 7, but also in the entire area , in which the hollow rivet 3 is connected to the filter plate 1.
  • the area of the push-through opening 16 is also reinforced in the direction of passage, since, of course, the hollow rivet 3 has a considerably higher structural strength than the push-in opening 2 in the relatively thin sheet of the filter plate 1.
  • the opening 4 is designed with a slight excess compared to the holding rod 7, so that the filter plate 1 can swing on the support rod 7, which is important for the undisturbed oscillation movement for shaking off the particles.
  • the hollow rivet can be formed from a pipe section 3 ', an end section of this pipe section 3' is already appropriately bent outwards, so that the hollow rivet from the right side in Fig. 4 through Push-through opening 2 and then riveted from the left side against a counterholder attached on the right side.
  • the size of the bearing surface 13 can be varied within certain limits with the length of the pipe section 3 ′ chosen or the wall thickness of this pipe section and can be adapted to the respective plate weight or the loads to be expected.
  • the hollow rivet can easily consist of a stronger or more wear-resistant metal than the sheet of the plate 1. Since there is only a non-positive connection between the hollow rivet 3 and the plate 1, it is irrelevant whether the two materials are compatible with one another or not, what so far e.g. then played a role if the plate consisted of a corrosion-resistant and possibly alloyed steel and had to be welded to the suspension brackets.
  • FIG. 5 shows another embodiment of a hollow rivet 3a, which is designed and fitted in the insertion opening in such a way that the contact surface 15 exhibits a continuously convex curvature. Although there is no flat support on the handrail, the pendulum mobility of the plate on the handrail is better.
  • the push-through openings and also the hollow rivets are shown circular. It is also possible to use a shape that differs from the round shape, e.g. to choose oval, cross-sectional shape for the opening and the rivet, so that this cross-sectional shape is possibly adapted to the cross-sectional shape of the holding or tapping rod or so that a better pivoting movement of the plate relative to the holding rod can be achieved.

Landscapes

  • Mechanical Engineering (AREA)
  • Engineering & Computer Science (AREA)
  • Control Of Throttle Valves Provided In The Intake System Or In The Exhaust System (AREA)
  • Dry Shavers And Clippers (AREA)
  • Connection Of Plates (AREA)
  • Electrostatic Separation (AREA)
  • Filtering Materials (AREA)
  • Vehicle Body Suspensions (AREA)
  • Body Structure For Vehicles (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)
  • Centrifugal Separators (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)

Abstract

1. A filter plate for suspension mounting in an electrofilter installation, comprising at least one passage opening (2) formed at an upper portion for a suspension rod (7) to pass therethrough, characterized in that said passage opening (2) is reinforced by a metallic hollow rivet (3, 3a) lining said passage opening.

Description

Die Erfindung betrifft eine Filterplatte zur hängenden Anbringung in einer Elektro-Filteranlage, mit wenigstens einer obenliegenden Durchstecköffnung für eine Haltestange.The invention relates to a filter plate for hanging attachment in an electric filter system, with at least one overhead opening for a support rod.

Solche Filterplatten werden üblicherweise an Haltestangen aufgehängt. Den Filterplatten benachbart sind Sprühelektroden angeordnet. Aus verunreinigten und zwischen den Filterplatten und den Sprühelektroden durchgeleiteten Gasen werden die Verunreinigungen elektrisch geladen und an den Oberflächen der Filterplatten gesammelt. Die Filterplatten werden dann in relativ kurzen Zeitabständen durch Anklopfen zum Schwingen angeregt, so dass die darauf gesammelten Verunreinigungen nach unten fallen und ausgetragen werden können. Die Filterplatten sind an den Haltestangen gelenkig aufgehängt und werden in einem unteren Bereich von einer sogenannten Klopfstange durchsetzt.Such filter plates are usually hung on handrails. Spray electrodes are arranged adjacent to the filter plates. The contaminants are electrically charged from contaminated gases and passed between the filter plates and the spray electrodes and collected on the surfaces of the filter plates. The filter plates are then caused to vibrate by knocking at relatively short intervals, so that the impurities collected on them fall down and can be carried away. The filter plates are articulated on the handrails and are penetrated by a so-called knocking rod in a lower area.

Bekannt ist es, in das Blech der Filterplatte die Einstecköffnungen zu schneiden und die Filterplatte im Öffnungsbereich trichterförmig auszubiegen, so dass dort die Gestaltfestigkeit und die Einreissfestigkeit verbessert wird. Zusätzlich können auch ringförmige Sicken um die Einstecköffnungen in das Blech der Platte eingepresst werden. Diese Massnahme ist zwar preiswert, jedoch verschleissen die Öffnungsränder unter dem Gewicht der Fifterplatte und insbesondere deren schwingender Bewegung verhältnismässig rasch, so dass die Filterplatte unerwünscht oft gewartet bzw. ausgetauscht werden muss. Auch die Einstecköffnungen für die Klopfstange werden in gleicher Weise ausgebildet. Dort ist zwar die mechanische Belastung geringer, jedoch tritt auch hier ein unerwünschter Verschleiss durch die Klopfbewegung der Klopfstange auf.It is known to cut the insertion openings into the sheet metal of the filter plate and to bend the filter plate in a funnel shape in the opening area, so that the structural strength and the tear resistance are improved there. In addition, annular beads around the insertion openings can be pressed into the sheet of the plate. Although this measure is inexpensive, the opening edges wear out relatively quickly under the weight of the filter plate and in particular its oscillating movement, so that the filter plate has to be maintained or replaced undesirably often. The insertion openings for the tapping rod are also formed in the same way. Although the mechanical load is lower there, undesired wear and tear also occurs here due to the tapping movement of the tapping rod.

Weiterhin ist es bekannt, an das beispielsweise 1,5 mm dicke Blech der Filterplatte in den Befestigungsbereichen bandförmige Laschen aus einem Blech mit beispielsweise 6 mm Stärke anzuschweissen und die Filterplatte mit den Laschen aufzuhängen. Entsprechende Laschen werden auch zur Kopplung der Platte mit der oder den Kiopfstangen angeschweisst. Diese Massnahme ist ausserordentlich teuer und erfordert zudem spezielle Schweissvorrichtungen und ein sehr sorgfältiges Arbeiten, da es schwierig ist, bei diesen Stärkeuntersehieden einwandfreie Schweissverbindungenzuerzeugen. Ungünstigsind hierbei auch die durch das Schweissen eintretenden Verzugserscheinungen im Blech der Filterplatte und die thermisch bedingten Spannungen, die in den Schweissbereichen frühzeitig zu Materialermüdung oder Einrissen führen, so dass auch hier die Lagesicherung wieder gefährdet ist. Bei in Umgebung mit agressiven Gasen zu verwendenden Edelstahlplatten ist eine Schweissverbindung gar nicht durchzuführen.Furthermore, it is known to weld band-shaped tabs made of sheet metal, for example 6 mm thick, to the, for example, 1.5 mm thick sheet of the filter plate in the fastening areas and to hang up the filter plate with the tabs. Corresponding tabs are also welded on for coupling the plate to the kiopfstangen. This measure is extremely expensive and also requires special welding devices and very careful work, since it is difficult to produce perfect welded connections with these starch differences. Also unfavorable are the distortions in the sheet metal of the filter plate caused by the welding and the thermally induced tensions, which lead to material fatigue or tears in the welding areas at an early stage, so that the securing of the position is again at risk here. In the case of stainless steel plates to be used in an environment with aggressive gases, a weld connection is not necessary at all.

Der Erfindung liegt das technische Problem zugrunde, die Aufhängunsbereiche bei einer Filterplatte der eingangs genannten Art mechanisch höher belastbar auszubilden.The invention is based on the technical problem of designing the suspension areas in a filter plate of the type mentioned at the outset to be mechanically stronger.

Das gestellte Problem wird erfindungsgemäss dadurch gelöst, dass die Durchstecköffnung mit einem metallischen, die Durchstecköffnung auskleidenden Hohlniet armiert ist. Bei dieser Ausbildung werden die Belastungen im Bereich der Einstecköffnung auf einen grossflächigen Bereich verteilt. Es werden lokale Überbelastungen vermieden. Vorteilhafterweise wird dabei die spezifische Flächenbelastung der Filterplatte im Aufhängungsbereich einerseits reduziert und andererseits auch die spezifische Flächenbelastung der Haltestange. Die Gefahr von Rissen im Bereich der Einstecköffnung ist beseitigt, und damit auch die Gefahr gefährlicher Kurzschlüsse. Trotzdem ist sichergestellt, dass die Filterplatte an den Haltestangen in gewünschter Weise beweglich aufgehängt werden kann. Diese Lösung ist zudem fertigungstechnisch sehr einfach und preiswert.The problem posed is solved according to the invention in that the push-through opening is reinforced with a metallic hollow rivet lining the push-through opening. With this design, the loads in the area of the insertion opening are distributed over a large area. Local overloads are avoided. The specific surface loading of the filter plate in the suspension area is advantageously reduced on the one hand and the specific surface loading of the support rod on the other hand. The risk of cracks in the area of the insertion opening has been eliminated, and with it the danger of dangerous short circuits. Nevertheless, it is ensured that the filter plate can be suspended on the handrails in the desired manner. This solution is also very simple and inexpensive to manufacture.

Damit sowohl die statischen als auch die dynamischen Belastungen gleichmässig in einem möglichst grossen Flächenbereich in die Filterplatte eingeleitet werden, ist es gemäss Anspruch 2 zweckmässig, wenn der Hohlniet an der Innenwand der Durchstecköffnung und an beiden Plattenseiten kraftschlüssig anliegt.So that both the static and the dynamic loads are uniformly introduced into the filter plate in the largest possible area, it is expedient according to claim 2 if the hollow rivet is non-positively on the inner wall of the push-through opening and on both sides of the plate.

Die Verstärkung der Aufhängebereiche lässt sich dann besonders einfach herstellen, wenn gemäss Anspruch 3 der Hohlniet aus einem Rohrabschnitt besteht, der an beiden Plattenseiten vernietet ist Mit der Rohrwandstärke lässt sich dabei in einfacher Weise die Grösse der Auflagefläche auf der Haltestange vorherbestimmen, während mit der Länge des Rohrabschnittes die Fläche bestimmbar ist, in der zwischen dem Hohlniet und der Platte eine kraftschlüssige Reibungsverbindung gebildet wird.The reinforcement of the suspension areas can be produced particularly easily if, according to claim 3, the hollow rivet consists of a tube section which is riveted on both sides of the plate. With the tube wall thickness, the size of the contact surface on the support rod can be determined in a simple manner, while the length of the pipe section, the area can be determined in which a frictional friction connection is formed between the hollow rivet and the plate.

Die Belastungen werden dann in einem optimal grossen Flächenbereich übertragen, wenn gemäss Anspruch 4 der in der Einstecköffnung eine Öffnung für die Haltestange begrenzende Hohlniet - in einem. Querschnitt gesehen-einen ebenen Auflageflächenabschnitt aufweist, von dem aus sich nach beiden Seiten nach aussen gekrümmte Auflageflächenabschnitte anschliessen.The loads are then transmitted in an optimally large area if, according to claim 4, the hollow rivet delimiting an opening for the holding rod in the insertion opening - in one. Cross section seen - has a flat support surface section, from which adjoin to both sides outwardly curved support surface sections.

Andererseits wird eine besonders günstige gelenkige Aufhängung der Filterplatte dann gemäs Anspruch 5 erreicht, wenn die Auflagefläche im Hohlniet durchgehend konvex gekrümmt ist.On the other hand, a particularly favorable articulated suspension of the filter plate is achieved according to claim 5 when the bearing surface in the hollow rivet is continuously convexly curved.

Eine weitere, zweckmässige Ausführungsform der Erfindung, bei der wenigstens eine untenliegende Durchstecköffnung für eine Klopfstange vorgesehen ist, kennzeichnet sich dadurch, dass auch die untenliegende Durchstecköffnung für die Klopfstange mit einem Hohlniet armiert ist. Obwohl in diesem Bereich die mechanischen Belastungen geringer sind, als im eigentlichen Aufhängebereich, ist es wünschenswert auch hier eine entsprechende Armierung vorzusehen, durch die der mechanische Verschleiss der Filterplatte auch bei längeren Betriebszeiten geringgehalten bleibt.Another expedient embodiment of the invention, in which at least one push-through opening at the bottom is provided for a knocking rod, is characterized in that the push-through opening at the bottom for the knocking rod is also reinforced with a hollow rivet. Although the mechanical loads in this area are lower than in the actual hanging area, it is desirable to provide appropriate reinforcement here as well, by means of which the mechanical wear of the filter plate is kept low even during longer operating times.

Ein weiteres, wichtiges Merkmal liegt gemäss Anspruch 7 darin, dass mehrere obenliegende und untenliegende und jeweils mit einem Hohlniet armierte Durchstecköffnungen in der Filterplatte vorgesehen sind.Another important feature according to claim 7 is that several top and bottom through openings, each reinforced with a hollow rivet, are provided in the filter plate.

Da der Hohlniet in der jeweiligen Einstecköffnung primär für die mechanische Belastbarkeit in diesem Bereich verantwortlich ist, kann es gemäss Anspruch 8 zweckmässig sein, den Hohlniet aus einem hochfesten Stahl auszubilden. Günstig ist dabei, dass der Hohlniet ohne weiteres aus einem anderen Metall bestehen kann, als die Filterplatte selbst, deren Werkstoff primär unter elektischen Gesichtspunkten bzw. im Hinblick auf eine Korrosionsfestigkeit gegen agressive Gase ausgewählt wird.Since the hollow rivet in the respective insertion opening is primarily responsible for the mechanical resilience in this area, it can be expedient according to claim 8 to form the hollow rivet from a high-strength steel. It is favorable that the hollow rivet can easily consist of a different metal than the filter plate itself, the material of which is selected primarily from an electrical point of view or with regard to corrosion resistance against aggressive gases.

Ein weiteres, wichtiges Merkmal der Erfindung ist gemäss Anspruch 9 dadurch gekennzeichnet, dass die Durchstecköffnung und der Hohlniet eine von einer runden Form abweichende, vorzugsweise ovale, Querschnittsform aufweisen. Dies ist im Hinblick darauf zweckmässig, dass die Haltestangen zum Aufnehmen des Gewichtes eine von der runden Form abweichende Querschnittsgestalt besitzen können und da für eine freie Schwingung der Filterplatte es zweckmässig sein kann, von einer runden Querschnittsform abzugehen, um eine Pendelbewegung um die Haltestange einerseits zu ermöglichen und dabei gleichzeitig auszuschliessen, dass die Platte quer zur Hängerichtung unzulässig grosse Ausschläge auszuführen vermag.Another important feature of the invention is characterized in that the push-through opening and the hollow rivet have a cross-sectional shape that deviates from a round shape, preferably oval. This is expedient in view of the fact that the holding rods for taking up the weight can have a cross-sectional shape that deviates from the round shape and since it can be expedient for a free oscillation of the filter plate to go from a round cross-sectional shape in order to achieve a pendulum movement around the holding rod enable and at the same time exclude that the plate can make impermissibly large swings across the hanging direction.

Eine weitere, zweckmässige Ausführungsform, wie sie für die Praxis im besonderen wichtig ist, kennzeichnet sich durch die Verwendung von vernieteten Hydraulik-Stahlrohrabschnitten als Armierungen für die Durchstecköffnungen der Filterplatte. Solche Rohrabschnitte können von handelsüblichen Rohren angefertigt werden, was preiswert und herstellungstechnisch günstig ist. Nachstehend wird anhand der Zeichnung die Erfindung erläutert.Another expedient embodiment, as is particularly important in practice, is characterized by the use of riveted hydraulic steel tube sections as reinforcements for the push-through openings of the filter plate. Such pipe sections can be made from commercially available pipes, which is inexpensive and inexpensive to manufacture. The invention is explained below with reference to the drawing.

Es zeigen:

  • Fig. 1 eine schematische Vorderansicht einer Filterplatte gemäss der Erfindung,
  • Fig. 2 eine Draufsicht auf die Filterplatte von Fig. 1,
  • Fig. 3 schematisch die Anordnung mehrerer Filterplatten gemäss Fig. 1 in einer Filteranlage,
  • Fig. 4 einen vergrösserten Schnitt durch den Aufhängungsbereich einer ersten Ausführungsform einer Filterplatte, und
  • Fig. 5 eine Schnittdarstellung ähnlich der Fig. 4 durch eine weitere Ausführungsform.
Show it:
  • 1 is a schematic front view of a filter plate according to the invention,
  • 2 is a plan view of the filter plate of FIG. 1,
  • 3 schematically shows the arrangement of several filter plates according to FIG. 1 in a filter system,
  • Fig. 4 is an enlarged section through the suspension area of a first embodiment of a filter plate, and
  • Fig. 5 is a sectional view similar to FIG. 4 through another embodiment.

Gemäss den Fig. 1 und 2 ist eine Filterplatte 1 aus Blech mit einer Wandstärke d von z.B. 1,5 bis 2 mm erkennbar, wie sie in elektrostatischen Filteranlagen für verunreinigte Gase oder Luft Verwendung findet. Die Filterplatte 1 hängt in den Anlagen in der in Fig. 1 dargestellten Lage und wird auf Haltestangen 7 gelagert, die durch Einstecköffnungen 2 in der Filterplatte 1 hindurchgreifen. In jede Einstecköffnung 2 ist ein Hohlniet 3 als Armierung eingeformt, der die eigentliche Öffnung 4 zum Durchstecken der Haltestange 7 begrenzt.1 and 2, a filter plate 1 made of sheet metal with a wall thickness d of e.g. 1.5 to 2 mm recognizable, as used in electrostatic filter systems for contaminated gases or air. The filter plate 1 hangs in the systems in the position shown in FIG. 1 and is mounted on holding rods 7 which reach through insertion openings 2 in the filter plate 1. A hollow rivet 3 is formed as a reinforcement in each insertion opening 2 and limits the actual opening 4 for pushing through the holding rod 7.

In einem unteren Bereich der Filterplatte 1 sind Einstecköffnungen 5 ausgeformt, in denen ebenfalls Hohlniete 3 angebracht sind, die dort Öffnungen 4 zum Durchstecken von Klopfstangen 7 begrenzen.In a lower region of the filter plate 1, insertion openings 5 are formed, in which hollow rivets 3 are also attached, which limit openings 4 there for pushing through knocking rods 7.

Wie Fig. 2 hervorhebt, ist die Filterplatte 1 mit Umbiegungen oder Prägungen ausgestattet, die ihre Gestaltfestigkeit und Oberfläche vergrössern.As emphasized in FIG. 2, the filter plate 1 is equipped with bends or embossments that increase its structural strength and surface.

Fig. 3 zeigt eine an Haltestangen 7 aufgehängte Filterplatte 1 im Querschnitt. Meist sind in einer Elektrofilteranlage bis zu sieben solcher Filterplatten nebeneinander aufgehängt und werden von einer gemeinsamen Klopfeinrichtung 10 bedient. Die Haltestangen 7 liegen gemeinsam in einer von 2 U-Profilen gebildeten Trageinrichtung 8. Die Klopfeinrichtung 10 besteht aus zwei zueinander parallelen Schienen, zwischen denen sich den Haltestangen 7 entsprechende Klopfstangen 7' befinden. Die Klopfeinrichtung 10 wird durch einen nicht dargestellten Klopfer angestossen, um die Filterplatten 1 über die Klopfstangen 7' in Schwingung zu versetzen. Die zugehörigen nicht schwingend gelagerten Sprühelektroden sind nicht dargestellt.Fig. 3 shows a filter plate 1 suspended on holding rods 7 in cross section. Usually, up to seven such filter plates are suspended next to one another in an electrostatic filter system and are operated by a common knocking device 10. The holding rods 7 lie together in a support device 8 formed by 2 U-profiles. The tapping device 10 consists of two mutually parallel rails, between which there are tapping rods 7 ′ corresponding to the holding rods 7. The knocking device 10 is triggered by a knocker, not shown, in order to set the filter plates 1 in vibration via the knocking rods 7 '. The associated non-vibrating spray electrodes are not shown.

Aus Fig. 4 geht im Detail hervor, wie die Einstecköffnung 2 für die Haltestange 7 bzw. auch die Einstecköffnung 5 für die Klopfstange 7'mit einem Hohlniet 3 armiert ist, um gegen mechanischen Verschleiss durch die statische Belastung infolge des Gewichtes der Platte (dieses kann mehrere 100 kg betragen) und durch die dynamischen Belastungen beim Schwingen der Platte widerstandsfähig zu sein. Der Hohlniet 3 ist an beiden Oberflächen 16, 17 des Bleches der Filterplatte 1 vernietet und liegt dadurch sowohl im Bereich der Durchstecköffnung 2 als auch an beiden Oberflächen 16,17 kraftschlüssig an. Dabei ist die Vernietung so ausgebildet, dass ein zylindrischer Auflagebereich 13 im Bereich der Öffnung 4 gebildet wird, von dem aus sich nach beiden Seiten nach aussen aufgeweitete Auflageflächenabschnitte 14 anschliessen. Durch die kraftschlüssige Abstützung des Hohlniets 3 im Bereich der Durchstecköffnung 2 wird die Reaktionskraft aus derAuflagebelastung auf einer durch die Öffnung 4 gesteckten Haltestange 7 nicht nur in den lokalen Bereich der Einstecköffnung 2 eingeleitet, derderauflagestelle auf der Haltestange 7 gegenüberliegt, sondern auch in den gesamten Flächenbereich, in dem der Hohlniet 3 mit der Filterplatte 1 in Verbindung steht. Zudem wird der Bereich der Durchstecköffnung 16 auch in Durchgangsrichtung verstärkt, da natürlich der Hohlniet 3 eine wesentlich höhere Gestaltfestigkeit besitzt, als die Einstecköffnung 2 in dem verhältnismässig dünnen Blech der Filterplatte 1. Die Öffnung 4 ist mit einem geringen Übermass gegenüber der Haltestange 7 ausgebildet, so dass die Filterplatte 1 an der Haltestange 7 pendeln kann, was für die ungestörte Schwingungsbewegung zum Abschütteln der Teilchen wichtig ist.From Fig. 4 it can be seen in detail how the insertion opening 2 for the holding rod 7 and also the insertion opening 5 for the tapping rod 7 'is reinforced with a hollow rivet 3 to prevent mechanical wear due to the static load due to the weight of the plate (this can be several 100 kg) and to be resistant due to the dynamic loads when the plate vibrates. The hollow rivet 3 is riveted to both surfaces 16, 17 of the plate of the filter plate 1 and is therefore non-positively in the area of the push-through opening 2 as well as on both surfaces 16, 17. The riveting is designed such that a cylindrical support area 13 is formed in the area of the opening 4, from which adjoining support surface sections 14 widen to the outside on both sides. Due to the non-positive support of the hollow rivet 3 in the area of the push-through opening 2, the reaction force from the bearing load on a holding rod 7 inserted through the opening 4 is not only introduced into the local area of the push-in opening 2, which is opposite the supporting point on the holding bar 7, but also in the entire area , in which the hollow rivet 3 is connected to the filter plate 1. In addition, the area of the push-through opening 16 is also reinforced in the direction of passage, since, of course, the hollow rivet 3 has a considerably higher structural strength than the push-in opening 2 in the relatively thin sheet of the filter plate 1. The opening 4 is designed with a slight excess compared to the holding rod 7, so that the filter plate 1 can swing on the support rod 7, which is important for the undisturbed oscillation movement for shaking off the particles.

Wie in strichlierten Linien in Fig. 4 angedeutet ist, kann der Hohlniet aus einem Rohrabschnitt 3' gebildet werden, wobei ein Endabschnitt dieses Rohrabschnittes 3' zweckmässigerweise schon nach aussen umgebogen ist, so dass der Hohlniet von der in Fig. 4 rechten Seite durch die Durchstecköffnung 2 gesteckt und dann von der linken Seite gegen einen auf der rechten Seite angesetzten Gegenhalter vernietet werden kann.As indicated by dashed lines in Fig. 4, the hollow rivet can be formed from a pipe section 3 ', an end section of this pipe section 3' is already appropriately bent outwards, so that the hollow rivet from the right side in Fig. 4 through Push-through opening 2 and then riveted from the left side against a counterholder attached on the right side.

Mit der jeweils gewählten Länge des Rohrabschnittes 3' bzw. der Wandstärke dieses Rohrabschnittes lässt sich die Grösse der Auflagefläche 13 in bestimmten Grenzen variieren und an das jeweilige Plattengewicht bzw. die zu erwartenden Belastungen anpassen.The size of the bearing surface 13 can be varied within certain limits with the length of the pipe section 3 ′ chosen or the wall thickness of this pipe section and can be adapted to the respective plate weight or the loads to be expected.

Der Hohlniet kann ohne weiteres aus einem festeren oder verschleisswiderstandsfähigeren Metall bestehen, als das Blech der Platte 1. Da zwischen dem Hohlniet 3 und der Platte 1 ohnedies nur eine kraftschlüssige Verbindung herrscht, ist es unerheblich, ob die beiden Werkstoffe sich miteinander vertragen oder nicht, was bisher z.B. dann eine Rolle gespielt hatte, wenn die Platte aus einem korrosionsfesten und ggf. legierten Stahl bestand und mit den Aufhängelaschen verschweisst werden musste.The hollow rivet can easily consist of a stronger or more wear-resistant metal than the sheet of the plate 1. Since there is only a non-positive connection between the hollow rivet 3 and the plate 1, it is irrelevant whether the two materials are compatible with one another or not, what so far e.g. then played a role if the plate consisted of a corrosion-resistant and possibly alloyed steel and had to be welded to the suspension brackets.

Fig. 5 zeigt eine andere Ausführungsform eines Hohlniets 3a, der so ausgebildet und in der Einstecköffnung angebracht ist, dass die Auflagefläche 15 eine durchgehend konvexe Krümmung zeigt. Hierbei wird zwar keine flächige Auflage auf der Haltestange erreicht, dafür ist aber die Pendelbeweglichkeit der Platte auf der Haltestange besser.FIG. 5 shows another embodiment of a hollow rivet 3a, which is designed and fitted in the insertion opening in such a way that the contact surface 15 exhibits a continuously convex curvature. Although there is no flat support on the handrail, the pendulum mobility of the plate on the handrail is better.

In den Zeichnungen sind die Durchstecköffnungen und auch die Hohlniete kreisrund dargestellt. Es istaberauch möglich, eine von der runden Form abweichende, z.B. ovale, Querschnittsform für die Öffnung und den Niet zu wählen, so dass diese Querschnittsform gegebenenfalls an die Querschnittsform der Halte- oder Klopfstange angepasst ist bzw. damit sich eine bessere Schwenkbeweglichkeit der Platte gegenüber der Haltestange erreichen lässt.In the drawings, the push-through openings and also the hollow rivets are shown circular. It is also possible to use a shape that differs from the round shape, e.g. to choose oval, cross-sectional shape for the opening and the rivet, so that this cross-sectional shape is possibly adapted to the cross-sectional shape of the holding or tapping rod or so that a better pivoting movement of the plate relative to the holding rod can be achieved.

Claims (10)

1. A filter plate for suspension mounting in an electrofilter installation, comprising at least one passage opening (2) farmed at an upper portion for a suspension rod (7) to pass therethrough, characterized in that said passage opening (2) is reinforced by a metallic hollow rivet (3, 3a) lining said passage opening.
2. A filter plate according to Claim 1, characterized in that said hollow rivet (3,3a), is in force- transmitting engagement with the interior wall of said passage opening (2) and with both sides (16, 17) of said plate.
3. A filter plate according to Claims 1 and 2, characterized in that said hollow rivet (3,3a) consists of a tube section riveted on both sides (16, 17) of said plate.
4. A filter plate according to Claims 1 to 3, characterized in that said hollow rivet (3, 3a) defining an opening (4) for said suspension rod (7) in said passage opening (2) comprises-as seen in cross-section - a planar support surface portion (13) joined at both sides by outwards flared support surface portions (14).
5. A filter plate according to Claims 1 to 3, characterized in that the support surface within said hollow rivet (3a) is of continuous convex arcuate shape.
6. A filter plate according to Claims 1 to 5, wherein at least one passage opening (5) is provided at a lower portion for a knocking rod (7) to pass therethrough, characterized in that said lower passage opening (5) is likewise reinforced with a hollow rivet (3).
7. A filter plate according to Claims 1 to 6, characterized in that it is provided with a plurality of upper and lower passage openings (2, 5) each reinforced with a hollow rivet (3).
8. A filter plate according to Claims 1 to 7, characterized in that said hollow rivet (3, 3a) consists of a high-strength steel.
9. A filter plate according to Claims 1 to 8, characterized in that said passage openings and said hollow rivet are of a shape deviating from a round shape, preferably of an oval cross-sectional shape.
10. A filter plate according to Claims 1 to 9, characterized by the employ of riveted hyraulic steel pipe sections as reinforcements for said passage openings (2, 5).
EP82109790A 1982-10-22 1982-10-22 Filterplatte Expired EP0106909B1 (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
EP82109790A EP0106909B1 (en) 1982-10-22 1982-10-22 Filterplatte
AT82109790T ATE17662T1 (en) 1982-10-22 1982-10-22 FILTER PLATE.
DE8282109790T DE3268874D1 (en) 1982-10-22 1982-10-22 FILTER PLATE
JP58163395A JPS5982954A (en) 1982-10-22 1983-09-07 Filter plate
BR8305669A BR8305669A (en) 1982-10-22 1983-10-14 FILTER BOARD
DK485783A DK164574C (en) 1982-10-22 1983-10-21 FILTER PLATE FOR AN ELECTROFILTER SYSTEM

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP82109790A EP0106909B1 (en) 1982-10-22 1982-10-22 Filterplatte

Publications (2)

Publication Number Publication Date
EP0106909A1 EP0106909A1 (en) 1984-05-02
EP0106909B1 true EP0106909B1 (en) 1986-01-29

Family

ID=8189304

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82109790A Expired EP0106909B1 (en) 1982-10-22 1982-10-22 Filterplatte

Country Status (6)

Country Link
EP (1) EP0106909B1 (en)
JP (1) JPS5982954A (en)
AT (1) ATE17662T1 (en)
BR (1) BR8305669A (en)
DE (1) DE3268874D1 (en)
DK (1) DK164574C (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109663668B (en) * 2018-12-25 2020-10-20 诸暨市库仑环保科技有限公司 Coulomb anode plate and coulomb anode plate dust removing system

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2714939A (en) * 1953-04-01 1955-08-09 Westinghouse Electric Corp Electrostatic precipitators
DE1245328B (en) * 1964-04-25 1967-07-27 Metallgesellschaft Ag Electrostatic dust collector

Also Published As

Publication number Publication date
DK485783A (en) 1984-04-23
DK164574B (en) 1992-07-20
EP0106909A1 (en) 1984-05-02
JPH0221297B2 (en) 1990-05-14
DK485783D0 (en) 1983-10-21
DK164574C (en) 1992-12-07
BR8305669A (en) 1984-07-10
DE3268874D1 (en) 1986-03-13
ATE17662T1 (en) 1986-02-15
JPS5982954A (en) 1984-05-14

Similar Documents

Publication Publication Date Title
DE19638156B4 (en) Structure for the upper body portion of a vehicle body
DE69919129T2 (en) SUSPENDED CEILING
DE102008059916B3 (en) Spring-loaded control arm for use in wheel suspension of motor vehicle, has brackets are connected with each other by locking plate including passage opening with collar that points away from bar of U-shaped spring-loaded control arm frame
DE2951291B1 (en) Screening machine
CH654759A5 (en) CENTRIFUGAL SCREEN.
EP0106909B1 (en) Filterplatte
DE2234368B2 (en) Electrostatic dust collector
DE3007897C2 (en) Load bars for vehicles, in particular for motor vehicles
DE3809046A1 (en) STEEL PLATE CARRIER
EP0337415B1 (en) Sound damping element
DE2427444C2 (en) Building nodes
DE102013215323A1 (en) Fastening element for a body part and fastening system with fastening element
DE19711627A1 (en) Lattice girder frame for tunnel development
AT413465B (en) DEVICE FOR FIXING A VIBRATOR ON AN INCLUSIVE ROPE
DE2432465B2 (en) HORIZONTALLY MOUNTED DRUM FOR A DRUM WASHING MACHINE
DE19616444C2 (en) Lattice girders for track and tunnel construction as well as stiffening elements for the manufacture of a lattice girder
DE8229729U1 (en) FILTER PLATE
EP3259169A1 (en) Connecting member for two longitudinal members of a rail vehicle
EP1860021B1 (en) Mounting arrangement to attach a component to a supporting wall of a motor vehicle.
DE3302851C2 (en) Middle part for a tubular electrostatic precipitator
DE1915868A1 (en) Electrostatic precipitator
CH656333A5 (en) Poured thin-walled body.
DE19814723C1 (en) Holder for stone slabs
EP0752508A2 (en) Façade covering
AT211222B (en) Vibratory conveyor for transport in one direction

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 19840112

AK Designated contracting states

Designated state(s): AT BE CH DE FR GB IT LI LU NL SE

ITCL It: translation for ep claims filed

Representative=s name: INGG. GUZZI RAVIZZA

EL Fr: translation of claims filed
GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Designated state(s): AT BE CH DE FR GB IT LI LU NL SE

REF Corresponds to:

Ref document number: 17662

Country of ref document: AT

Date of ref document: 19860215

Kind code of ref document: T

ITF It: translation for a ep patent filed

Owner name: STUDIO GLP S.R.L.

ET Fr: translation filed
REF Corresponds to:

Ref document number: 3268874

Country of ref document: DE

Date of ref document: 19860313

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
ITTA It: last paid annual fee
EPTA Lu: last paid annual fee
EAL Se: european patent in force in sweden

Ref document number: 82109790.4

REG Reference to a national code

Ref country code: CH

Ref legal event code: PFA

Free format text: JOSEF WELSER OHG TRANSFER- WELSER PROFILE AG

REG Reference to a national code

Ref country code: GB

Ref legal event code: 732E

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20010925

Year of fee payment: 20

NLS Nl: assignments of ep-patents

Owner name: WELSER PROFILE AG

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20011018

Year of fee payment: 20

Ref country code: AT

Payment date: 20011018

Year of fee payment: 20

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 20011019

Year of fee payment: 20

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: BE

Payment date: 20011022

Year of fee payment: 20

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 20011026

Year of fee payment: 20

Ref country code: LU

Payment date: 20011026

Year of fee payment: 20

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 20011102

Year of fee payment: 20

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20011129

Year of fee payment: 20

REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

REG Reference to a national code

Ref country code: FR

Ref legal event code: TP

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Free format text: LAPSE BECAUSE OF EXPIRATION OF PROTECTION

Effective date: 20021021

Ref country code: GB

Free format text: LAPSE BECAUSE OF EXPIRATION OF PROTECTION

Effective date: 20021021

Ref country code: CH

Free format text: LAPSE BECAUSE OF EXPIRATION OF PROTECTION

Effective date: 20021021

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Free format text: LAPSE BECAUSE OF EXPIRATION OF PROTECTION

Effective date: 20021022

Ref country code: LU

Free format text: LAPSE BECAUSE OF EXPIRATION OF PROTECTION

Effective date: 20021022

Ref country code: AT

Free format text: LAPSE BECAUSE OF EXPIRATION OF PROTECTION

Effective date: 20021022

REG Reference to a national code

Ref country code: GB

Ref legal event code: PE20

Effective date: 20021021

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

EUG Se: european patent has lapsed

Ref document number: 82109790.4

NLV7 Nl: ceased due to reaching the maximum lifetime of a patent

Effective date: 20021022