Wet Surface Treatment Apparatus

Abstract

There is provided a wet surface treatment apparatus which can perform surface treatment on a desired place of a surface treatment target member, irrespective of an installed place of the surface treatment target member, or a shape of the surface treatment target member. A wet surface treatment apparatus according to the present invention has a tank that contains a treatment liquid, a nozzle that ejects the treatment liquid to a surface treatment target member, and a power source that supplies a current to the nozzle. The nozzle has a nozzle body, which has a flow path of the treatment liquid, a nozzle cover in which one end is connected to a tip of the nozzle body and the other end comes into contact with the surface treatment target member, and a power feeder line which supplies the current from the power source to the nozzle body and the nozzle cover.

1 . A wet surface treatment apparatus comprising:
 a tank that accommodates a treatment liquid;   a nozzle that ejects the treatment liquid to a surface treatment target member; and   a power source that supplies a current to the nozzle,   wherein the nozzle has a nozzle body which has a flow path of the treatment liquid, a nozzle cover in which one end is connected to a tip of the nozzle body and the other end comes into contact with the surface treatment target member, and a power feeder line through which the current from the power source is supplied to the nozzle body and the nozzle cover.   
     
     
         2 . The wet surface treatment apparatus according to  claim 1 ,
 wherein the nozzle cover is flexible.   
     
     
         3 . The wet surface treatment apparatus according to  claim 1 ,
 wherein in the nozzle cover, a surface on which the nozzle cover comes into contact with the surface treatment target member has a decompressing hole.   
     
     
         4 . The wet surface treatment apparatus according to claim  1 ,
 wherein the nozzle cover has an outflow hole through which a waste liquid of the treatment liquid is discharged outward of the nozzle cover.   
     
     
         5 . The wet surface treatment apparatus according to  claim 1 ,
 wherein the power feeder line is exposed on a surface on which the nozzle cover comes into contact with the surface treatment target member, and the power feeder line comes into contact with the surface treatment target member so as to supply the current to the surface treatment target member.   
     
     
         6 . The wet surface treatment apparatus according to  claim 1 ,
 wherein the flow path of the treatment liquid is formed from an insoluble electrode.   
     
     
         7 . The wet surface treatment apparatus according to  claim 3 ,
 wherein the nozzle has an aspirator which decompresses an interior of the nozzle cover, and is configured to perform aspiration through the decompressing hole, and   wherein the aspirator decompresses and evacuates the interior of the nozzle cover by using a flow of the treatment liquid ejected from the nozzle.   
     
     
         8 . The wet surface treatment apparatus according to  claim 2 ,
 wherein the nozzle cover is formed of a resin material having chemical resistance.   
     
     
         9 . The wet surface treatment apparatus according to  claim 8 ,
 wherein the resin material contains either a silicone resin or a fluorine resin.   
     
     
         10 . The wet surface treatment apparatus according to  claim 2 ,
 wherein the nozzle cover has a multi-stage bellows shape.   
     
     
         11 . The wet surface treatment apparatus according to  claim 1 , further comprising:
 a tube that connects the tank and the nozzle to each other; and   a circulation pump that is disposed in the tube,   wherein a waste liquid of the treatment liquid supplied from the tank to the nozzle is collected to the tank via the tube and the circulation pump.   
     
     
         12 . The wet surface treatment apparatus according to  claim 3 , further comprising:
 a vacuum pump that is connected to the decompressing hole,   wherein the decompressing hole is decompressed and evacuated by the vacuum pump so as to bring the nozzle cover and the surface treatment target member into close contact with each other.   
     
     
         13 . The wet surface treatment apparatus according to  claim 1 ,
 wherein the treatment tank accommodates a plurality of different treatment liquids.   
     
     
         14 . The wet surface treatment apparatus according to  claim 6 ,
 wherein a polarity of the insoluble electrode is changed by the power source.   
     
     
         15 . The wet surface treatment apparatus according to  claim 1 ,
 wherein the surface treatment target member is a large structure member fixed onto the land.   
     
     
         16 . The wet surface treatment apparatus according to claim  15 ,
 wherein the large structure member is a structure member of a bridge or a power plant.