EP0462983A1 - Installations pour le traitement electrolytique de la surface de produits en vrac - Google Patents

Installations pour le traitement electrolytique de la surface de produits en vrac

Info

Publication number
EP0462983A1
EP0462983A1 EP90903171A EP90903171A EP0462983A1 EP 0462983 A1 EP0462983 A1 EP 0462983A1 EP 90903171 A EP90903171 A EP 90903171A EP 90903171 A EP90903171 A EP 90903171A EP 0462983 A1 EP0462983 A1 EP 0462983A1
Authority
EP
European Patent Office
Prior art keywords
central tube
conveyor
electrolyte
insulation
conveyor trough
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.)
Withdrawn
Application number
EP90903171A
Other languages
German (de)
English (en)
Inventor
Siegfried Birkle
Jürgen Fischer
Johann Gehring
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.)
Siemens AG
Original Assignee
Siemens AG
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 Siemens AG filed Critical Siemens AG
Publication of EP0462983A1 publication Critical patent/EP0462983A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G49/00—Conveying systems characterised by their application for specified purposes not otherwise provided for
    • B65G49/02—Conveying systems characterised by their application for specified purposes not otherwise provided for for conveying workpieces through baths of liquid
    • B65G49/04—Conveying systems characterised by their application for specified purposes not otherwise provided for for conveying workpieces through baths of liquid the workpieces being immersed and withdrawn by movement in a vertical direction
    • B65G49/0409—Conveying systems characterised by their application for specified purposes not otherwise provided for for conveying workpieces through baths of liquid the workpieces being immersed and withdrawn by movement in a vertical direction specially adapted for workpieces of definite length
    • B65G49/0413—Conveying systems characterised by their application for specified purposes not otherwise provided for for conveying workpieces through baths of liquid the workpieces being immersed and withdrawn by movement in a vertical direction specially adapted for workpieces of definite length arrangements for conveyance through the bath
    • B65G49/0427—Conveying systems characterised by their application for specified purposes not otherwise provided for for conveying workpieces through baths of liquid the workpieces being immersed and withdrawn by movement in a vertical direction specially adapted for workpieces of definite length arrangements for conveyance through the bath jigging conveyors
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D17/00—Constructional parts, or assemblies thereof, of cells for electrolytic coating
    • C25D17/16—Apparatus for electrolytic coating of small objects in bulk
    • C25D17/28—Apparatus for electrolytic coating of small objects in bulk with means for moving the objects individually through the apparatus during treatment

Definitions

  • the invention relates to a device for the electrolytic surface treatment of bulk material, preferably for the electrodeposition of metal from an electrolyte, with an oscillating conveyor, the conveyor trough of which is connected to a central tube.
  • the conveyor trough of the vibratory conveyor is arranged in a reversible manner around the central tube and surrounded by a container which is provided with at least one entry and one exit shaft for the bulk material.
  • This container contains the electrolyte, into which the vibrating conveyor with the central tube is partially immersed.
  • an oscillating conveyor with a horizontal and vertical oscillating component for transporting the pourable material through the treatment bath.
  • This vibratory conveyor transports the bulk material using the mass forces in a helical conveyor trough in an increasing direction around a columnar central tube, which is connected to the conveyor. gutter is connected.
  • the vibratory conveyor is accommodated with the support column in a gas-tight container which contains an electrolyte into which the central tube with the conveyor trough is partially immersed.
  • oblique vibrators or inclined handlebars serve as drive means. Such drives cause vibrations in such a way that the bulk material is transported periodically with the vibration at a height in the conveying direction through the electrolyte.
  • Such vibratory conveyors require only a relatively low driving force and enable gentle conveying of the
  • the conveyor trough of the vibratory conveyor can be set in motion via the central tube, which is connected to the vibratory drive.
  • the central tube then also performs the task of supporting the conveyor trough in addition to transmitting vibrations.
  • the helical feed channel leading upward around the central tube is attached to the centrally arranged central tube in a particularly simple and space-saving manner.
  • the oscillation is then excited with little effort by an oscillation drive which is arranged above or below the central tube.
  • the current supply to the cathode takes place within the central tube, while the current is supplied to the anode through the container wall (DE-0S 35 24 510).
  • the invention is based on the object of specifying a particularly simple embodiment of a power supply to one of the electrodes, preferably the cathode.
  • support bars also form a mechanical holder for the conveyor trough and an electrical power supply to the bulk material forming the cathode.
  • Form the contact screws embedded in the support beam Both a mechanical connection between the support bars and the conveyor trough 2 and also a current transmission to the bulk material connected as a cathode or also as an anode.
  • FIG. 1 schematically illustrates a device for the electro-lytic surface coating of bulk material as a section.
  • FIGS. 2 and 3 each show an embodiment of a support beam according to the invention, which also serves as a power supply.
  • a device for the electrolytic surface treatment of metallic bulk material for example for the electrodeposition of aluminum from aprotic, oxygen-free and water-free aluminum-organic electrolytes, according to FIG. 1, contains a central tube 2 with a base 3 and a cover 4 as well as a hollow cylindrical side wall .5 .
  • the central tube 2 protrudes from a container 6, the cover 7 of which is connected to the central tube 2 in a gas-tight manner via a sealing bellows.
  • a gas cushion 10 in the manner of a diving bell is enclosed by the bottom 3 of the central tube 2 and a hollow cylindrical extension (not shown in the figure).
  • the central tube 2 is partially immersed in an electrolyte 12, the upper mirror of which is indicated by dashed lines in the figure and is designated by 13.
  • the electrolyte 12 can be, for example, an aprotic oxygen-free and water-free aluminum-organic electrolyte.
  • an oscillating drive which is only indicated in the figure, is arranged, which is attached to a bearing block 17 and is relatively freely accessible.
  • this oscillating drive 16 causes an oscillating movement of the central tube 2 and thus a conveyor trough 18 which is arranged helically around the central tube 2.
  • the conveyor trough 18 contains a see bulk material 20 which is transported within the conveyor trough 18 in the electrolyte 12 and is contacted electrically during the transport.
  • the conveyor trough 18 is fastened to support bars which serve both as a mechanical holder for the conveyor trough 18 and as a power supply to the bulk material 20 and which are designated 22 to 29 in the figure.
  • the support bars 22 to 25 or 26 to 29, which are arranged one above the other, are each electrically conductively connected to an electrode connection 34 or 35 via at least one busbar 32 or 33.
  • the conveyor trough 18 with the recessed contact screws which are to be connected as cathode in this embodiment, are assigned anodes, of which only three are shown in the figure for simplicity and are denoted by 37 to 39.
  • the anode 37 is attached to the container wall 6 and the anodes 38 and 39 are attached to the cover of an anode shaft.
  • An import shaft which is only indicated in the figure, is designated 41 and an export shaft is 42.
  • the bulk material 20 can be moved to the beginning of the process by actuating a mechanical switch, which is shown in the figure only as a flap 44 and which can be actuated from the outside with a drive 45 Conveyor trough 18 can be returned.
  • a support bar is electrically conductively connected, for example screwed, to the busbar 32 via the contact shaft 52 and is stably supported in the welded sleeve in the side wall 5 of the central tube 2.
  • a contact shaft 52 made of electrically conductive material, preferably with a profiled surface, which can be made, for example, of metal, in particular of high-strength steel, is used to conduct current and at the same time for mechanical strength.
  • the profile of the contact shaft 52 is not shown in the figure for simplification.
  • the contact shaft 52 is provided with an electrical insulation 54, which can consist, for example, of plastic and, in conjunction with a profiled surface, preferably of a hard tissue winding HGW. The resin-impregnated tissue is wound around the contact shaft in a known manner, then pressed and then cured.
  • a plurality of contact screws are passed through the bottom 19 of the conveyor trough 18 and the insulation 54, which serve to fasten the conveyor trough 18 to the contact shaft 52 and at the same time produce an electrical connection between the contact shaft 52 and the bulk material 20.
  • W 300 mm
  • six contact screws can be provided for the support bar, of which only three are shown in the figure for simplicity and are designated by 56 to 58.
  • These contact screws 56 to 58 can preferably be provided with enlarged heads embedded in the conveyor trough for a favorable current distribution on the bulk material 20.
  • These screws are generally provided with a securing element, not shown in the figure, so that they do not come loose due to the vibration of the conveyor trough 18.
  • the contact shaft 52 with its insulation 54 and a sealing ring 64, is pushed into a sleeve 62, which is made of metal, for example steel, and is non-detachably connected, for example welded, to the side wall 5 of the central tube.
  • This sleeve 62 is provided with a coating 63, which may preferably consist of a self-curing plastic, in particular phenolic resin, and which also covers the side wall 5 of the central tube.
  • a bushing 66 which consists of mechanically strong, electrically insulating material, preferably glass fiber reinforced plastic GRP, serves for the electrical insulation of the contact shaft 52 against the central tube 2 and as a counter bearing.
  • the support beam is over the contact shaft 52 is screwed to the side wall 5. Subsequently, the support bar is connected to the busbar 32 with the second nut, also not shown.
  • a disc spring 74 can preferably also be provided between the washer 68 and the nut 72.
  • the conveyor trough 18 is fixed in the side wall 5 of the central tube 2 and, on the other hand, the electrical contact between the busbar 32 and the bulk material 20 is established.
  • a sealing ring 76 can also be arranged closer to the electrolyte 12, in particular on the end face of the sleeve 62 facing the electrolyte 12, as shown in FIG. 3.
  • the insulation 54 is provided with a ring shoulder 78, which serves as a counter bearing.
  • the electrolyte 12 can no longer penetrate into the annular gap between the insulation 54 and the inner wall of the sleeve 62.
  • the inner sealing ring 64 is omitted.

Landscapes

  • 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 Metals (AREA)
  • Electroplating Methods And Accessories (AREA)

Abstract

Pour effectuer un dépôt électrolytique sur un métal à partir d'un électrolyte au moyen d'un convoyeur oscillant, le produit en vrac est transporté dans une gouttière transporteuse qui fait office de cathode. Dans l'installation objet de l'invention, la gouttière transporteuse (18) est équipée de traverses (22 à 29) prévues à la fois pour la fixation mécanique de la gouttière transporteuse (18) sur le tube central (2) et pour le transfert du courant à la cathode et qui servent en outre de traversée électrique à travers la paroi latérale (5) du tube central (2). Les traverses (22 à 29) comportent un arbre de contact (52) électriquement conducteur, qui est isolé électriquement par rapport à l'électrolyte (12) et au tube central (2). La fixation de la gouttière transporteuse (18) sur les traverses (22 à 29) est assurée par des boulons de contact (56 à 58) qui servent également au transfert du courant de l'arbre de contact (52) au produit en vrac (20). Ce mode d'exécution offre un moyen simple d'amener le courant à la cathode.
EP90903171A 1989-03-06 1990-02-21 Installations pour le traitement electrolytique de la surface de produits en vrac Withdrawn EP0462983A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP89103917 1989-03-06
EP89103917 1989-03-06

Publications (1)

Publication Number Publication Date
EP0462983A1 true EP0462983A1 (fr) 1992-01-02

Family

ID=8201050

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90903171A Withdrawn EP0462983A1 (fr) 1989-03-06 1990-02-21 Installations pour le traitement electrolytique de la surface de produits en vrac

Country Status (5)

Country Link
US (1) US5186803A (fr)
EP (1) EP0462983A1 (fr)
JP (1) JPH04505638A (fr)
CA (1) CA2047690A1 (fr)
WO (1) WO1990010740A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7751863B2 (en) * 2007-02-06 2010-07-06 Glumetrics, Inc. Optical determination of ph and glucose

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3649490A (en) * 1968-11-12 1972-03-14 Diversified Metals Corp Method for timed electrolytic processing of masses of electrically conductive metal parts
US4701248A (en) * 1985-07-09 1987-10-20 Siemens Aktiengesellschaft Apparatus for electrolytic surface treatment of bulk goods
DE3907185A1 (de) * 1989-03-06 1990-09-13 Siemens Ag Einrichtung zum transport von schuettfaehigem gut mit einem schwingfoerderer, der in eine fluessigkeit eintaucht

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9010740A1 *

Also Published As

Publication number Publication date
CA2047690A1 (fr) 1990-09-07
JPH04505638A (ja) 1992-10-01
WO1990010740A1 (fr) 1990-09-20
US5186803A (en) 1993-02-16

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