Abstract:
An electrical field is generated between an application device and an object to be coated. At least one corona electrode associated with the application device is connected to ground, and at least one counter electrode associated with the object is connected at least at intervals to a positive potential. A system for electrostatically coating objects having an application device coating material, and an electrical field device having a high-voltage source which generates an electrical field between the application device and an object to be coated. The field device comprises at least one corona electrode associated with the application device, and at least one counter electrode associated with the object, wherein, during the operation of the device, the at least one corona electrode is connected to ground, and the at least one counter electrode is connected at least at intervals to a positive potential.
Abstract:
A method and device for separating overspray from the cabin exhaust air of coating systems which is laden with overspray, wherein the overspray is taken up by an air flow and conveyed to an electrostatically operating separating device. There, the bulk at least of the solids is separated from the overspray at a separating area of at least one separating surface. A cohesive material web is used as a separating agent, which is disposed at least partly along the separating area of the at least one separating surface and during operation of the separating device is electrically conductive at least in the separating area of the at least one separating surface.
Abstract:
In a method for removing solids from overspray produced when painting objects, the overspray is absorbed by an air flow and is conducted to a deposition surface, across which a deposition liquid flows and where a large part of at least the solids is transferred into the deposition liquid, is discharged by said deposition liquid, and is removed from the liquid by means of a deposition process. A deposition liquid is used and disclosed which comprises a detackifying medium and an optional suspending fluid, paint overspray particles being detackified using the detackifying medium.
Abstract:
An apparatus for deposition of lacquer overspray from the used cabin air of painting facilities laden with overspray comprises electrode apparatus and/or several regions of an electrode apparatus allocated to several different deposition surfaces. The several electrode apparatus and/or regions of one and the same electrode apparatus can be charged with high voltage independently of each other. This achieves not only an energy savings but also fault locating in the high voltage range is simplified and emergency operation in case of a breakdown in the high-voltage range is made possible.
Abstract:
What is described is a process and an installation for drying articles, in particular painted vehicle bodies, in which the articles are moved through a drying zone in which they are hardened in an inert-gas atmosphere. Inert gas is taken from the drying zone constantly or intermittently and is first of all conducted along a first face which is at a first temperature at which higher-boiling contaminants condense out. The condensate that forms in the process is discharged. After that, the inert gas which has been pre-cleaned in this way is conducted along at least one second face which is at a lower temperature than the first face. Lower-boiling contaminants are precipitated at this point. These condensates, too, are then discharged. This process and installation work more favourably, energy-wise, and with higher cleaning efficiency than known processes and installations of a similar type.
Abstract:
A set of roller conveyors is described, the members of which include a plurality of driven rollers disposed in two parallel tracks. Each member of the set has at least one electric feed-in block, which is connectable to the locally available system voltage and from this generates an output voltage, which is the same for all members of the set and is lower than or equal to the lowest system voltage, for which a member of the set is designed. The drive motors of the driven rollers are in this case designed for the output voltage of the feed-in block. In this way, the manufacturer of the roller conveyors may carry out the design, warehousing, and assembly of a roller conveyor independently of the different system voltages available from site to site and in this way may considerably reduce the costs associated therewith.
Abstract:
A system for tempering vehicle bodies having a housing, a tempering tunnel in the housing, at least one pressure chamber in a housing and separated by a wall from the tempering tunnel, a plurality of nozzles in the wall and an air tempering unit which introduces tempered air into the pressure chamber in such a way that the tempered air flows in through the nozzles into the tempering tunnel and acts on the vehicle body. At least one nozzle unit is oriented and has a range that is wide enough, such that the air stream exiting the nozzle unit passes through an opening in the vehicle body on the side facing the nozzle unit and acts on an inner face of the vehicle body on the opposite side.
Abstract:
A system for painting objects, in particular vehicle bodies or add-on parts, comprising a spray booth in which a paint can be applied to the objects. A fluid flow, which receives overspray and possibly solvent arising during the painting process, passes through the spray booth from the top down. A recovery system for recovering the overspray and possibly the solvent comprises at least one substantially vertical pipe, through which the fluid led out of the spray booth and laden with overspray and possibly solvent can flow and the surface of which is provided with elevations and/or recesses in such a way that eddies form in the fluid flowing through the pipe and the paint overspray is deposited onto the circumferential wall and flows downward out of the pipe.
Abstract:
A method for separating overspray from the cabin exhaust air of coating systems, in particular of painting systems, which is laden with overspray, the overspray is taken up by an air flow and conveyed to an electrostatically operating separating device. There, the bulk at least of the solids is separated from the overspray at at least one separating surface. An electrically conductive material or material mixture is used as a separating agent, which is applied to the at least one separating surface of the separating device and at the operating temperature of the separating device has a wax-like consistency. Also a separating device with such a wax-like material and a system for coating articles.
Abstract:
A device for separating paint overspray from the air of painting cubicles that is laden with overspray has in a housing at least one separating element, the surface of which is electrically conductive and is connected to one terminal of a high-voltage source. The separating element is assigned an electrode arrangement, which is connected to the other terminal of the high-voltage source. The air of the cubicle is made to flow past the separating element and the electrode arrangement in such a way that the overspray particles are colonized and deposited on the surface of the separating element. The separating element is moved continuously or intermittently, wherein a wiping device wipes off the overspray that is on the surface of the separating element. This can then be carried away by a suitable transporting device for disposal or re-use.