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EP1091025A2 - Flat-type anode cell for use in cataphoretic coating baths - Google Patents

Flat-type anode cell for use in cataphoretic coating baths Download PDF

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Publication number
EP1091025A2
EP1091025A2 EP00117483A EP00117483A EP1091025A2 EP 1091025 A2 EP1091025 A2 EP 1091025A2 EP 00117483 A EP00117483 A EP 00117483A EP 00117483 A EP00117483 A EP 00117483A EP 1091025 A2 EP1091025 A2 EP 1091025A2
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EP
European Patent Office
Prior art keywords
anode cell
anode
anolyte
wall
cell according
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Granted
Application number
EP00117483A
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German (de)
French (fr)
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EP1091025B1 (en
EP1091025A3 (en
Inventor
Stefan Grün
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Elektro-Kohle-Koln & Co KG GmbH
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Elektro-Kohle-Koln & Co KG GmbH
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Publication of EP1091025A3 publication Critical patent/EP1091025A3/en
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    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D13/00—Electrophoretic coating characterised by the process
    • C25D13/22—Servicing or operating apparatus or multistep processes

Definitions

  • cataphoretic coating baths for example for Priming and painting car bodies is the one Current flow in the bath liquid causing cataphoresis Anode cells are generated along the pelvic rim in vertical or horizontal orientation in the bath liquid are arranged immersed, while that to be coated Workpiece, e.g. a car body, as a cathode is switched.
  • the anode cells have a metal anode, which in a separated from the bath liquid by an ion exchange membrane and flowed through by an anolyte circulating through it Chamber is arranged.
  • the anode cell then has the shape of a flat box with a height of about two meters, one Width of about 0.80 meters and a depth of a few centimeters.
  • the box consists of a frame with a Back wall; the front wall is through the ion exchange membrane formed against a correspondingly stable support grid the hydrostatic pressure is supported.
  • the plate-shaped The anode is in use in vertical or horizontal Orientation immersed in the bath liquid Box on the lower frame spar.
  • the anolyte is from a supply connection on the upper frame spar two pipes running along the side frame spars or hoses in the anode cell and down emerges from there horizontally over the lower frame spar Pipe sections into the interior of the cell.
  • the anolyte drain occurs from the upper area of the anode cell.
  • the known anode cells in this flat design have different ones Disadvantage. It has been shown that the plate anode corroded quickly and badly in the lower area, whereby especially the corner areas strong in a relatively short time be eaten away. Sludge deposits and accumulations in the lower area of the anode cell, also from the strong Anode corrosion prevents the anolyte circulation, because they are the outlet of the anolyte from the above the bottom Frame frame extending pipe sections hinder or even To block. Replacing the plate anode is difficult because the plate anode is so heavy that a hoist is necessary to pull them out of the anode cell and insert a new plate anode.
  • the whole anode cell is pretty heavy because of the hydrostatic pressure must be built accordingly stable and in particular that Support grid for the ion exchange membrane is correspondingly stable have to be.
  • the effect of the bath liquid is less the problem from the outside on the anode cell because the Anode cell itself is filled with anolyte. But it will Drained coating bath, the inner hydrostatic affects Pressure of the anode cell filled with anolyte because of the large height of the anode cell.
  • the invention has for its object a significantly improved To create anode cell in flat design, which the problems identified at least significantly reduced.
  • the anode cell consists of a frame 1 made of plastic, a rear wall 2 also made of plastic, with an ion exchange membrane 3 forming the front wall a supporting grid 4 made of glass fiber reinforced as a diagonal grid Plastic, along the front of the frame arranged angle profiles 5, which the membrane 3 and attach the support grid 4 to the front of the frame 1, a plurality of over the front surface of the anode cell outside and each on the side frame bars attached reinforcement brackets 6 made of steel, two in the side frame spars 11 extending anolyte supply pipes 7, and two plate anodes 8.
  • the two plate anodes 8 are arranged side by side.
  • the two anolyte lines 7 in the two side frame members 11, the one in the uppermost area of the anode cell common anolyte supply connection converge, open with their lower ends in the lower cross member 12 of the Frame, which is designed as a closed duct.
  • the cross member 12 In its upper, forming the bottom of the anode cell chamber Wall, the cross member 12 has a number of outlet openings 13 through which the supplied anolyte from below into the Inside the anode cell chamber enters. The return of the Anolytes from inside the anode cell chamber are made by top area of the anode cell.
  • the two plate anodes 8 are not on the lower cross member 12 of the frame, but are guided laterally, but otherwise freely suspended in the anode cell. Your lower edges have a certain distance from the one with the Exit bores 13 provided upper wall of the cross member 12. In addition, the plate anodes 8 are everywhere on their edges rounded so that there are no excessive edges Field concentrations arise and corrosion is reduced becomes. Because the lower edges of the plate anodes 8 with a certain Distance above the lower cross member 12 are arranged and thus also over the outlet bores 13, the Plate anodes uniformly everywhere in the area of their lower edges flows around supplied anolyte, so that the conventional anode cells appearing in flat construction strong signs of corrosion in the lower plate anode area reduce significantly.
  • 11 are directly on the side frame bars closable above the cross member 12 with a plug 14 Drainage openings are provided, which make it possible to To empty the anode cell and any sludge accumulation in the easy to rinse out the lower area. Because the anode cell chamber below through the smooth upper wall of the lower crossbar 12 is complete and there in contrast to the conventional Low-rise anode cells no anolyte tubes above the floor there are no corners and dead spaces in which sludge deposits can accumulate and settle.
  • the formation of the support grid 4 as a diagonal grid brings also have a number of advantages. For one thing the arrangement is statically cheaper than one with vertical and horizontal bars formed lattice because the diagonal 6 bars extending between the reinforcement brackets an improvement of the support effect by the reinforcement bracket 6 condition. But also the dirt deposits on the Support grids required for construction are significantly reduced. While with a support grid with vertical and horizontal Lattice bars the dirt everywhere the horizontal bars would collect Contamination at most in the lower corners of the individual Mesh openings at where they go through to those in the coating bath prevailing bath liquid movements washed away more easily become.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Electrolytic Production Of Non-Metals, Compounds, Apparatuses Therefor (AREA)
  • Battery Electrode And Active Subsutance (AREA)

Abstract

The lower limit of the anode cell inner chamber is formed by a smooth wall of an anolyte channel connected to the anolyte lines. A number of openings (13) for the anolytes are formed in the wall. The plate-like anode hangs inside the anode cell and ends with its upper edge at a certain distance above the wall and the openings. Anode cell comprises a housing in the form of a flat box with frame (1), a back wall (2), an ion exchange membrane (3) forming the front wall and supported by a lattice (4), a plate-like anode, anolyte connections for the feed and removal lines and anolyte lines (7) running from the connections into the lower end region of the cell. The lower limit of the anode cell inner chamber is formed by a smooth wall of an anolyte channel connected to the anolyte lines. A number of openings (13) for the anolytes are formed in the wall. The plate-like anode hangs inside the anode cell and ends with its upper edge at a certain distance above the wall and the openings.

Description

In kataphoretischen Beschichtungsbädern, beispielsweise zum Grundieren und Lackieren von Autokarosserien, wird der die Kataphorese bewirkende Stromfluß in der Badflüssigkeit durch Anodenzellen erzeugt, die entlang des Beckenrands in vertikaler oder horizontaler Orientierung in die Badflüssigkeit eintauchend angeordnet sind, während das zu beschichtende Werkstück, also z.B. eine Autokarosserie, als Kathode geschaltet ist.In cataphoretic coating baths, for example for Priming and painting car bodies is the one Current flow in the bath liquid causing cataphoresis Anode cells are generated along the pelvic rim in vertical or horizontal orientation in the bath liquid are arranged immersed, while that to be coated Workpiece, e.g. a car body, as a cathode is switched.

Die Anodenzellen weisen eine Metallanode auf, die in einer von der Badflüssigkeit durch eine Ionenaustauschermembran getrennten und von einem hindurchzirkulierten Anolyten durchströmten Kammer angeordnet ist.The anode cells have a metal anode, which in a separated from the bath liquid by an ion exchange membrane and flowed through by an anolyte circulating through it Chamber is arranged.

Es ist bereits bekannt, derartige Anodenzellen in Flachbauweise auszuführen. Die Anodenzelle hat dann die Form eines flachen Kastens mit einer Höhe von etwa zwei Meter, einer Breite von etwa 0,80 Meter und einer Tiefe von einigen Zentimetern. Der Kasten besteht aus einem Rahmen mit einer Rückwand; die Frontwand ist durch die Ionenaustauschermembran gebildet, die an einem entsprechend stabilen Stützgitter gegen den hydrostatischen Druck abgestützt ist. Die plattenförmige Anode steht in dem im Gebrauch in vertikaler oder horizontaler Orientierung in die Badflüssigkeit eintauchend angeordneten Kasten auf dem unteren Rahmenholm auf. Der Anolyt wird von einem Zuleitungsanschluß am oberen Rahmenholm durch zwei entlang der seitlichen Rahmenholme verlaufende Rohre oder Schläuche in der Anodenzelle nach unten geführt und tritt dort aus horizontal über dem unteren Rahmenholm verlaufende Rohrabschnitten in das Zelleninnere aus. Die Anolytenableitung erfolgt aus dem oberen Bereich der Anodenzelle.It is already known to use such anode cells in a flat design to execute. The anode cell then has the shape of a flat box with a height of about two meters, one Width of about 0.80 meters and a depth of a few centimeters. The box consists of a frame with a Back wall; the front wall is through the ion exchange membrane formed against a correspondingly stable support grid the hydrostatic pressure is supported. The plate-shaped The anode is in use in vertical or horizontal Orientation immersed in the bath liquid Box on the lower frame spar. The anolyte is from a supply connection on the upper frame spar two pipes running along the side frame spars or hoses in the anode cell and down emerges from there horizontally over the lower frame spar Pipe sections into the interior of the cell. The anolyte drain occurs from the upper area of the anode cell.

Die bekannten Anodenzellen in dieser Flachbauweise haben verschiedene Nachteile. Es hat sich gezeigt, daß die Plattenanode im unteren Bereich schnell und stark korrodiert, wobei insbesondere die Eckbereiche in relativ kurzer Zeit stark weggefressen werden. Schlammablagerungen und -Ansammlungen im unteren Bereich der Anodenzelle, was auch von der starken Anodenkorrosion herrührt, behindern die Anolytenzirkulation, weil sie den Austritt des Anolyten aus den über dem unteren Rahmenholm verlaufenden Rohrabschnitten behindern oder gar blockieren. Der Austausch der Plattenanode ist schwierig, da die Plattenanode ein so großes Gewicht hat, daß ein Hebezeug notwendig ist, um sie aus der Anodenzelle herauszuziehen und eine neue Plattenanode einzuführen. Die ganze Anodenzelle ist ziemlich schwer, weil sie wegen des hydrostatischen Drucks entsprechend stabil gebaut sein muß und insbesondere das Stützgitter für die Ionenaustauschermembran entsprechend stabil sein muß. Dabei ist weniger die Einwirkung der Badflüssigkeit von außen auf die Anodenzelle das Problem, da die Anodenzelle ja selbst mit Anolyt gefüllt ist. Wird aber das Beschichtungsbad abgelassen, wirkt sich der innere hydrostatische Druck der mit Anolyt gefüllten Anodenzelle wegen der großen Bauhöhe der Anodenzelle stark aus.The known anode cells in this flat design have different ones Disadvantage. It has been shown that the plate anode corroded quickly and badly in the lower area, whereby especially the corner areas strong in a relatively short time be eaten away. Sludge deposits and accumulations in the lower area of the anode cell, also from the strong Anode corrosion prevents the anolyte circulation, because they are the outlet of the anolyte from the above the bottom Frame frame extending pipe sections hinder or even To block. Replacing the plate anode is difficult because the plate anode is so heavy that a hoist is necessary to pull them out of the anode cell and insert a new plate anode. The whole anode cell is pretty heavy because of the hydrostatic pressure must be built accordingly stable and in particular that Support grid for the ion exchange membrane is correspondingly stable have to be. The effect of the bath liquid is less the problem from the outside on the anode cell because the Anode cell itself is filled with anolyte. But it will Drained coating bath, the inner hydrostatic affects Pressure of the anode cell filled with anolyte because of the large height of the anode cell.

Der Erfindung liegt die Aufgabe zugrunde, eine erheblich verbesserte Anodenzelle in Flachbauweise zu schaffen, welche die aufgezeigten Probleme zumindest in erheblichem Umfang reduziert.The invention has for its object a significantly improved To create anode cell in flat design, which the problems identified at least significantly reduced.

Diese Aufgabe wird gemäß der Erfindung durch die im Patentanspruch 1 angegebene Anodenzelle gelöst. Vorteilhafte Ausgestaltungen der Erfindung sind Gegenstand der Unteransprüche. Der Aufbau der erfindungsgemäßen Anodenzelle und die sich daraus ergebenden vorteilhaften Wirkungen werden nachstehend unter Bezugnahme auf das in der Zeichnung dargestellte und im folgenden in seinen Einzelheiten beschriebene Ausführungsbeispiel erläutert. In den Zeichnungen zeigt:

Fig. 1
eine teilweise aufgebrochene Frontansicht einer Anodenzelle nach der Erfindung, und
Fig. 2
eine teilweise aufgebrochene Seitenansicht der Anodenzelle nach Fig. 1.
This object is achieved according to the invention by the anode cell specified in claim 1. Advantageous embodiments of the invention are the subject of the dependent claims. The structure of the anode cell according to the invention and the resulting advantageous effects are explained below with reference to the embodiment shown in the drawing and described in detail below. In the drawings:
Fig. 1
a partially broken front view of an anode cell according to the invention, and
Fig. 2
a partially broken side view of the anode cell of FIG. 1st

Die erfindungsgemäße Anodenzelle besteht aus einem Rahmen 1 aus Kunststoff, einer Rückwand 2 ebenfalls aus Kunststoff, einer die Frontwand bildenden Ionenaustauschermembran 3 mit einem als Diagonalgitter ausgeführten Stützgitter 4 aus glasfaserverstärktem Kunststoff, an der Frontseite längs des Rahmens angeordneten Winkelprofilen 5, welche die Membran 3 und das Stützgitter 4 an der Frontseite des Rahmens 1 befestigen, weiter einer Mehrzahl von über die Frontfläche der Anodenzelle außen verlaufenden und jeweils an den seitlichen Rahmenholmen befestigter Verstärkungsbügeln 6 aus Stahl, zwei in den seitlichen Rahmenholmen 11 verlaufenden Anolytenzuleitungsrohren 7, und zwei Plattenanoden 8. Die beiden Plattenanoden 8 sind nebeneinander angeordnet.The anode cell according to the invention consists of a frame 1 made of plastic, a rear wall 2 also made of plastic, with an ion exchange membrane 3 forming the front wall a supporting grid 4 made of glass fiber reinforced as a diagonal grid Plastic, along the front of the frame arranged angle profiles 5, which the membrane 3 and attach the support grid 4 to the front of the frame 1, a plurality of over the front surface of the anode cell outside and each on the side frame bars attached reinforcement brackets 6 made of steel, two in the side frame spars 11 extending anolyte supply pipes 7, and two plate anodes 8. The two plate anodes 8 are arranged side by side.

Die beiden Anolytenleitungen 7 in den beiden seitlichen Rahmenholmen 11, die im obersten Bereich der Anodenzelle zu einem gemeinsamen Anolytenzuleitungsanschluß zusammenlaufen, münden mit ihren unteren Enden in den unteren Querholm 12 des Rahmens, der als geschlossener Leitungskanal ausgebildet ist. In seiner oberen, den Boden der Anodenzellenkammer bildenden Wand weist der Querholm 12 eine Anzahl von Austrittsöffnungen 13 auf, durch welche der zugeführte Anolyt von unten in das Innere der Anodenzellenkammer eintritt. Die Rückführung des Anolyten aus dem Inneren der Anodenzellenkammer erfolgt vom obersten Bereich der Anodenzelle aus. The two anolyte lines 7 in the two side frame members 11, the one in the uppermost area of the anode cell common anolyte supply connection converge, open with their lower ends in the lower cross member 12 of the Frame, which is designed as a closed duct. In its upper, forming the bottom of the anode cell chamber Wall, the cross member 12 has a number of outlet openings 13 through which the supplied anolyte from below into the Inside the anode cell chamber enters. The return of the Anolytes from inside the anode cell chamber are made by top area of the anode cell.

Die beiden Plattenanoden 8 stehen nicht auf dem unteren Querholm 12 des Rahmens auf, sondern sind zwar seitlich geführt, aber im übrigen frei hängend in der Anodenzelle angeordnet. Ihre Unterkanten haben einen gewissen Abstand von der mit den Austrittsbohrungen 13 versehenen oberen Wand des Querholms 12. Außerdem sind die Plattenanoden 8 an ihren Kanten überall gerundet, so daß auch an den Plattenkanten keine übermäßigen Feldkonzentrationen entstehen und die Korrosion vermindert wird. Weil die Unterkanten der Plattenanoden 8 mit einem gewissen Abstand über dem unteren Querholm 12 angeordnet sind und damit auch über den Austrittsbohrungen 13, werden die Plattenanoden im Bereich ihrer Unterkanten überall gleichmäßig von zugeführten Anolyten umströmt, so daß die bei den herkömmlichen Anodenzellen in Flachbauweise auftretenden starken Korrosionserscheinungen im unteren Plattenanodenbereich sich erheblich reduzieren.The two plate anodes 8 are not on the lower cross member 12 of the frame, but are guided laterally, but otherwise freely suspended in the anode cell. Your lower edges have a certain distance from the one with the Exit bores 13 provided upper wall of the cross member 12. In addition, the plate anodes 8 are everywhere on their edges rounded so that there are no excessive edges Field concentrations arise and corrosion is reduced becomes. Because the lower edges of the plate anodes 8 with a certain Distance above the lower cross member 12 are arranged and thus also over the outlet bores 13, the Plate anodes uniformly everywhere in the area of their lower edges flows around supplied anolyte, so that the conventional anode cells appearing in flat construction strong signs of corrosion in the lower plate anode area reduce significantly.

Des weiteren sind an den seitlichen Rahmenholmen 11 unmittelbar oberhalb des Querholms 12 mit Stopfen 14 verschließbare Entleerungsöffnungen vorgesehen, die es ermöglichen, die Anodenzelle zu entleeren und etwaige Schlammansammlungen im unteren Bereich einfach auszuspülen. Da die Anodenzellenkammer unten durch die glatte obere Wand des unteren Querholms 12 abgeschlossen ist und dort im Gegensatz zu den herkömmlichen Flachbau-Anodenzellen keine Anolytenrohre über dem Boden verlaufen, sind keine Ecken und Toträume vorhanden, in denen sich Schlammablagerungen ansammeln und festsetzen können.Furthermore, 11 are directly on the side frame bars closable above the cross member 12 with a plug 14 Drainage openings are provided, which make it possible to To empty the anode cell and any sludge accumulation in the easy to rinse out the lower area. Because the anode cell chamber below through the smooth upper wall of the lower crossbar 12 is complete and there in contrast to the conventional Low-rise anode cells no anolyte tubes above the floor there are no corners and dead spaces in which sludge deposits can accumulate and settle.

Die Aufteilung der bei herkömmlichen Anodenzellen einteiligen großen Plattenanode in zwei nebeneinander angeordnete Plattenanoden halbiert deren Gewicht und macht es möglich, daß die Plattenanoden 8 ohne Zuhilfenahme irgendwelcher Hebezeuge und ohne Überanstrengung von Hand ausgezogen und eingesetzt werden können. Sie sind also wesentlich leichter und einfacher zu handhaben als die große Plattenanode herkömmlicher Anodenzellen. Zugleich bieten sie die Möglichkeit, den Aufbau des Zellenkastens dadurch zu verfestigen und zu verstärken, daß, wie aus den Zeichnungen hervorgeht, die Verstärkungsbügel 6 jeweils mittig über eine Zug- und Stützverbindung 9 mit der Rückwand 2 verbunden sind. Dadurch sind sowohl die Rückwand als auch die Verstärkungsbügel 6 und über diese das Stützgitter 4 mittig, also in der halben Breite der Anodenzelle, sowohl gegen Zusammendrücken von außen als auch gegen Ausbauchung von innen abgestützt, ohne daß die beiden Plattenanoden 8, die beiderseits dieser Zug- und Stützverbindungen 9 angeordnet sind, in ihrer freien Handhabbarkeit beim Herausziehen oder Einschieben behindert werden. Diese zusätzliche Verstärkung bedeutet aber auch, daß die Bauteile der Anodenzelle wegen der mittigen Abstützung und der daraus resultierenden geringeren Belastungen auch schwächer dimensioniert sein können und dadurch das Gesamtgewicht der Anodenzelle ganz erheblich gegenüber herkömmlichen Anodenzellen gesenkt werden kann. Denn zum einen ist auf diese Weise ein Gesamtaufbau aus Kunststoff bzw. Kunststoffmaterialien möglich, der sonst aus Festigkeitsgründen nicht möglich wäre, und zum anderen brauchen die Bauteile nicht durch übermäßig starke Dimensionierung mit entsprechend hohem Eigengewicht versehen sein.The division of the one-piece in conventional anode cells large plate anode in two plate anodes arranged side by side halves their weight and makes it possible that the plate anodes 8 without the aid of any lifting equipment and stripped and used by hand without overexertion can be. So they are much lighter and simpler to handle than the large plate anode more conventional Anode cells. At the same time, they offer the possibility of building to solidify and strengthen the cell box, that, as can be seen from the drawings, the reinforcement bracket 6 each in the middle via a train and support connection 9 the rear wall 2 are connected. This makes both the back wall as well as the reinforcement bracket 6 and about this Support grid 4 in the middle, i.e. half the width of the anode cell, both against external compression and against Bulging supported from the inside without the two plate anodes 8, on both sides of these train and support connections 9 are arranged in their free handling when Pulling out or pushing in are hindered. This additional Reinforcement also means that the components the anode cell because of the central support and the resulting resulting lower loads are also dimensioned weaker can be and thereby the total weight of the anode cell very significantly compared to conventional anode cells can be lowered. Because on the one hand this is a Overall construction made of plastic or plastic materials possible, which would otherwise not be possible for reasons of strength, and on the other hand, the components do not need excessive strong dimensioning with a correspondingly high dead weight be provided.

Die Ausbildung des Stützgitters 4 als Diagonalgitter bringt ebenfalls eine Reihe von Vorteilen mit sich. Zum einen ist die Anordnung statisch günstiger als ein mit senkrechten und waagrechten Stäben ausgebildetes Gitter, weil die diagonal zwischen den Verstärkungsbügeln 6 verlaufenden Gitterstäbe eine Verbesserung der Abstützwirkung durch die Verstärkungsbügel 6 bedingen. Aber auch die Schmutzablagerungen auf dem konstruktionsnotwendigen Stützgitter werden deutlich verringert. Während bei einem Stützgitter mit vertikalen und horizontalen Gitterstäben die Verschmutzungen sich überall auf den horizontalen Gitterstäben absetzen würden, sammeln sich Verschmutzungen allenfalls in den unteren Ecken der einzelnen Gitteröffnungen an, wo sie zu dem durch die im Beschichtungsbad herrschenden Badflüssigkeitsbewegungen leichter weggespült werden.The formation of the support grid 4 as a diagonal grid brings also have a number of advantages. For one thing the arrangement is statically cheaper than one with vertical and horizontal bars formed lattice because the diagonal 6 bars extending between the reinforcement brackets an improvement of the support effect by the reinforcement bracket 6 condition. But also the dirt deposits on the Support grids required for construction are significantly reduced. While with a support grid with vertical and horizontal Lattice bars the dirt everywhere the horizontal bars would collect Contamination at most in the lower corners of the individual Mesh openings at where they go through to those in the coating bath prevailing bath liquid movements washed away more easily become.

Claims (12)

Anodenzelle in Flachbauweise zur Verwendung in kataphoretischen Beschichtungsbädern, bestehend aus einem in Form eines flachen Kastens ausgebildeten Gehäuse mit einem Rahmen (1), einer Rückwand (2), einer die Frontwand bildenden, mittels eines Stützgitters (4) abgestützten Ionenaustauschermembran (3), einer plattenförmigen Anode (8), Anolytenzu- und -ableitungsanschlüssen und mit vom Anolytenzuleitungsanschluß in den unteren Endbereich der Anodenzelle verlaufenden Anolytenleitungen (7),
dadurch gekennzeichnet, daß die untere Begrenzung des Anodenzelleninnenraums durch eine im wesentlichen glatte Wand eines mit den Anolytenleitungen (7) verbundenen Anolytenkanals gebildet ist, in welcher eine Mehrzahl von Austrittsöffnungen (13) für den Anolyten gebildet sind, und die plattenförmige Anode (8) hängend im Anodenzelleninneren angeordnet ist und mit ihrer Unterkante mit gewissem Abstand oberhalb der genannten Wand und der darin gebildeten Austrittsöffnungen (13) endigt. Anode cell in flat design for use in cataphoretic coating baths, consisting of a housing in the form of a flat box with a frame (1), a rear wall (2), an ion exchange membrane (3) forming the front wall and supported by a supporting grid (4), one plate-shaped anode (8), anolyte supply and discharge connections and with anolyte lines (7) running from the anolyte supply connection into the lower end region of the anode cell,
characterized in that the lower boundary of the anode cell interior is formed by a substantially smooth wall of an anolyte channel connected to the anolyte lines (7), in which a plurality of outlet openings (13) for the anolyte are formed, and the plate-shaped anode (8) is arranged hanging in the interior of the anode cell and ends with its lower edge at a certain distance above said wall and the outlet openings (13) formed therein. Anodenzelle nach Anspruch 1, wobei ein unterer Querholm (12) des Rahmens (1) als Anolytenkanal ausgebildet ist, in welchen die Anolytenleitungen (7) einmünden, und dessen obere Wand die genannte Wand (13) bildet.Anode cell according to claim 1, wherein a lower cross member (12) of the frame (1) is designed as an anolyte channel, in which open the anolyte lines (7), and its upper Wall forms said wall (13). Anodenzelle nach Anspruch 1 oder 2, wobei alle Kanten der plattenförmigen Anode (8) gerundet sind. Anode cell according to claim 1 or 2, wherein all edges of the plate-shaped anode (8) are rounded. Anodenzelle nach einem der Ansprüche 1 bis 3, wobei die plattenförmige Anode ihrer Breite nach in zwei separate und etwa flächenbündig nebeneinander angeordnete Halbanoden unterteilt ist, die jeweils gesondert aus der Anodenzelle nach oben herausziehbar bzw. in die Anodenzelle einschiebbar sind.Anode cell according to one of claims 1 to 3, wherein the plate-shaped anode in width in two separate and about half-anodes arranged flush next to each other is, each separately from the anode cell can be pulled out at the top or inserted into the anode cell. Anodenzelle nach einem der Ansprüche 1 bis 4, wobei die Anolytenleitungen (7) in den seitlichen vertikalen Rahmenholmen (11) verlaufen.Anode cell according to one of claims 1 to 4, wherein the Anolyte lines (7) in the lateral vertical Frame spars (11) run. Anodenzelle nach einem der Ansprüche 1 bis 5, wobei unmittelbar über der genannten Wand (13) eine durch einen Stopfen (14) verschließbare Anolytenablaßöffnung vorgesehen ist.Anode cell according to one of claims 1 to 5, wherein immediately over said wall (13) one by a stopper (14) closable anolyte drain opening is provided. Anodenzelle nach Anspruch 6, wobei zwei Ablaßöffnungen jeweils an den beiden seitlichen Rahmenlängsholmen (11) vorgesehen sind.Anode cell according to claim 6, wherein two drain openings each provided on the two side longitudinal frame members (11) are. Anodenzelle nach einem der Ansprüche 1 bis 7, wobei vorderhalb des Stützgitters (4) eine Mehrzahl von mit gegenseitigen vertikalen Abständen angeordneten Verstärkungsbügeln (6) angeordnet ist, die beiderseits an den seitlichen Rahmenholmen (11) befestigt sind.Anode cell according to one of claims 1 to 7, wherein above of the support grid (4) a plurality of mutually reinforcement brackets arranged at vertical distances (6) is arranged on both sides of the side frame bars (11) are attached. Anodenzelle nach Anspruch 4 oder Anspruch 8 in der Rückbeziehung auf Anspruch 4, wobei die beiden Halbanoden einen geringen seitlichen Abstand voneinander haben und in dem Zwischenraum zwischen den beiden Halbanoden Zug- und Stützverbindungen zwischen der Rückwand (2) und dem Stützgitter (4) bzw. den Verstärkungsbügeln (6) vorgesehen sind.Anode cell according to claim 4 or claim 8 in the relationship to claim 4, wherein the two half anodes have a small have lateral distance from each other and in the space train and support connections between the two half anodes between the rear wall (2) and the support grid (4) or the reinforcement brackets (6) are provided. Anodenzelle nach einem der Ansprüche 1 bis 9, wobei das Stützgitter (4) als Diagonalgitter ausgeführt ist.Anode cell according to one of claims 1 to 9, wherein the Support grid (4) is designed as a diagonal grid. Anodenzelle nach einem der Ansprüche 1 bis 10, wobei das Stützgitter aus glasfaserverstärktem Kunststoff hergestellt ist. Anode cell according to one of claims 1 to 10, wherein the Support grid made of glass fiber reinforced plastic is. Anodenzelle nach einem der Ansprüche 1 - 11, wobei die Ionenaustauschermembran (3) und das Stützgitter (4) auf der Frontseite des Rahmens (1) mittels Winkelprofilen (5) aus Kunststoff befestigt sind, auf welche die gegebenenfalls vorhandenen Verstärkungsbügel (6) aufgesetzt sind.Anode cell according to any one of claims 1-11, wherein the Ion exchange membrane (3) and the support grid (4) on the Front of the frame (1) by means of angle profiles (5) Plastic are attached, on which the possibly existing Reinforcement bracket (6) are attached.
EP00117483A 1999-10-07 2000-08-12 Flat-type anode cell for use in cataphoretic coating baths Expired - Lifetime EP1091025B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19948177 1999-10-07
DE19948177A DE19948177C1 (en) 1999-10-07 1999-10-07 Anode cell has an inner chamber formed by a smooth wall of an anolyte channel connected to the anolyte lines

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EP1091025A2 true EP1091025A2 (en) 2001-04-11
EP1091025A3 EP1091025A3 (en) 2002-02-13
EP1091025B1 EP1091025B1 (en) 2006-02-22

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AT (1) ATE318332T1 (en)
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FR2918673A1 (en) * 2007-07-12 2009-01-16 Siemens Vai Metals Tech Sas INSTALLATION AND METHOD FOR ELECTROLYTICALLY SHAPING STEEL BANDS

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DE10051683A1 (en) * 2000-10-18 2002-05-02 Duerr Systems Gmbh Anode cell for cathodic electro dip painting of workpieces
DE202018001747U1 (en) 2018-04-04 2018-06-22 Ekk Anlagentechnik Gmbh & Co. Kg Anode cell for use in cataphoretic coating baths

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EP1091025B1 (en) 2006-02-22
DE19948177C1 (en) 2000-12-14
ATE318332T1 (en) 2006-03-15
ES2259279T3 (en) 2006-10-01
EP1091025A3 (en) 2002-02-13
DE50012248D1 (en) 2006-04-27

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