Spray pretreatment system and method for pre-treating workpieces by spraying
AssigneeGerd Wurster
InventorGerd Wurster
Life of this patent
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Abstract
The invention discloses a spray pretreatment system and a method for pre-treating workpieces by spraying in a spraying tunnel, wherein the workpieces are fed into a treating station through an entry station. The inlet opening of the entry station is located below the level of the treating installations of the treating station. In this way, partial condensation of the vapors escaping from the treating station occurs in the entry station so that one can do without an extraction system in the area of the roof surface of the spraying tunnel. If desired, an extraction system with relatively low capacity may be provided in the region of the inlet opening.
Claims21
A spray pretreatment system comprising:
- a spraying tunnel;
- an entry region located within said spraying tunnel and followed by at least one treating region comprising at least one treating installation comprising nozzles for treating workpieces by spraying or flooding an aqueous solution comprising water and chemicals onto the workpieces;
- a collecting tank located below said treating installation for collecting the aqueous solution from said treating installation;
- a pump for supplying the aqueous solution from said collecting tank to said treating installation;
- and
- a conveyor for transporting workpieces through said spraying tunnel;
- wherein said entry region comprises an inlet opening having an upper edge located at a level below said treating installation;
- wherein said conveyor is configured for feeding workpieces from outside said inlet opening through said inlet opening, for lifting said workpieces from said inlet opening to said treating installation located on a higher level, and for lowering said workpieces from said at least one treatment installation to an intermediate zone or an outlet of said spraying tunnel;
- wherein said upper edge of said inlet opening is on a lower level than said nozzles so that vapor escaping from said aqueous solution sprayed through said nozzles or from said aqueous solution collected within said collecting tank is maintained within said spraying tunnel;
- wherein said inlet opening and said nozzles positioned to be in gaseous communication with an ambient environment outside said entry region through the entry region during treating of the workpieces by spraying or flooding the aqueous solution comprising water and chemicals onto the workpieces.
A spray pretreatment system comprising:
- a spraying tunnel;
- an entry region located within said spraying tunnel and followed by at least one treating region comprising at least one treating installation comprising nozzles for treating workpieces by spraying or flooding a solution onto workpieces;
- a collecting tank located below said treating installation for collecting the solution from said treating installation;
- a pump for supplying the solution from said collecting tank to said treating installation;
- and
- a conveyor for transporting workpieces through said spraying tunnel;
- wherein said entry region comprises an inlet opening having an upper edge located at a level below said treating installation;
- wherein said upper edge of the inlet opening is on a lower level than said nozzles so that vapor escaping from said solution sprayed through said nozzles or from said solution collected within said collecting tank is maintained within said spraying tunnel;
- wherein said inlet opening and said nozzles positioned to be in gaseous communication with an ambient environment outside said entry region through the entry region during treating of the workpieces by spraying or flooding the solution onto the workpieces.
Dependencies are inferred from the claim text.