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US 4,701,248 AGranted
Apparatus for electrolytic surface treatment of bulk goods
AssigneeSiemens Aktiengesellschaft
InventorsSiegfried Birkle, Johann Gehring
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AssigneeSiemens Aktiengesellschaft
InventorsSiegfried Birkle, Johann Gehring
Estimating the term…
An apparatus for electrolytic surface treatment of bulk goods includes a tank for the acceptance of the treatment bath, an arrangement for connecting the goods to be treated to at least one pole of an electrical source, an electrode disposed in the bath connected to the other pole opposite the one pole, a vibratory conveyor having a helically ascending conveyor track and an arrangement for receiving the goods from the end of the conveyor track and returning them to the beginning of the track by a return device so that they will pass through the bath at least one more time. The arrangement for receiving includes a switch arrangement for selectively shifting the goods discharged from the end of the track between the return device and a discharge station. The apparatus is particularly suitable for electro-deposition of aluminum from an aprotic, oxygen-free and water-free, aluminum-organic electrolyte.
In an apparatus for electrolytic surface treatment of bulk goods, said apparatus comprising a tank for the acceptance of a treatment bath, at least one vibratory conveyor being positioned in the tank and having a helically ascending conveyor track for the transport of goods through the treatment bath from a starting region of the conveyor to a discharge end of the conveyor, said tank having feed means for introducing goods from outside the tank onto the starting region and discharge means for receiving goods from the discharge end and removing them from the tank, means for electrically contacting the goods to a polarity of one pole of a voltage source, and at least one electrode arranged in the treatment bath and having a polarity opposite to the polarity of the one pole, the improvement comprising return means for selectively returning the bulk goods from a discharge end of the vibratory conveyor to a starting region of said conveyor, and switch means for selectively connecting the discharge end to one of the return means and discharge means so that the goods can be passed through the treatment bath more than one time before being discharged from the tank.
In an apparatus for electrolytic surface treatment of bulk goods, said apparatus comprising a tank for the acceptance of a treatment bath, discharge means for removing goods from the tank, at least one vibratory conveyor having a helically ascending conveyor track for the transport of goods through the treatment bath, means for electrically contacting the goods to a polarity of one pole of a voltage source, and at least one electrode arranged in the treatment bath and having a polarity opposite to the polarity of the one pole, the improvement comprising return means for selectively returning the bulk goods from a discharge end of the vibratory conveyor to a starting region of said conveyor so that the goods can be passed through the treatment bath more than one time, and means for raising and lowering the level of the treatment bath between an upper level used during the operation of the return means and a lower level used during the discharge of the goods from the tank of the apparatus through the discharge means.
Dependencies are inferred from the claim text.