Abstract: In order to ensure consistently good maceration of biological material in an electroporation reactor, it is proposed to monitor the conductivity of the mixture therein and to detect any arcing which occurs therein. The results of such monitoring are used to modify the operating voltage of the electroporation reactor and/or the composition of the mixture located in the reactor channel.

Abstract: A particle separator for an air inlet unit, comprising at least one inlet channel, for a fluid flow contaminated with particles, defined between two opposing fluid guide surfaces, narrowing in the fluid flow direction and opening in an outlet channel for particles, connected to at least one fluid channel for the purified fluid which leads away from the inlet channel in a region outside the inlet channel. A method for the purification of the fluid flow contaminated with particles whereby the above is led along one of the fluid guide surfaces, which is curved, at least in a part before the outlet channel, towards the interior of the inlet channel.

Abstract: The invention relates to an electrodipping device comprising, in a known manner, a bath of enamel, and a transport device used, during the continuous method, to dip the workpieces to be coated into the bath of enamel, to move the workpieces through the bath, and remove the same therefrom. Electrodes are arranged in the bath of enamel, along the path of displacement of the workpieces, said electrodes being connected to a voltage source with one pole thereof. The second pole of said voltage source is connected to a contact rail extending along the path of displacement of the workpieces. Each workpiece is provided with a contact device which is in contact with the contact rail. A controllable voltage regulating unit is arranged between each contact device and the corresponding workpiece. A position determination device enables the momentaneous position of each workpiece to be determined.

Abstract: An electrophoretic dip coating plant comprises at least one dip tank, which is filled with a coating fluid. The objects which are to be coated are carried by means of a conveyor system through the coating fluid located in the dip tank and are then in electrical contact with a bus bar arrangement comprising an input and/or output region and a main region. The main region of the bus bar arrangement is connected to one terminal of a d.c. voltage supply unit. The other terminal of this d.c. voltage supply unit is electrically connected to at least one electrode which is immersed in the coating fluid in the dip tank. In order to enable the voltages which are applied to the adjacent regions of the bus bar arrangement to be regulated independently of one another, yet still to manage with a single d.c.

Abstract: An electrical separating unit is disclosed for a fluid conveying line, in particular a paint conveying line, which has an elongated separating pipe that can be freed or closed at its ends by separating valves. The interior of the separating pipe can be brought by a compressor to a pressure that is significantly above atmospheric pressure or can be evacuated by a suction pump to a pressure that is significantly below atmospheric pressure. In both cases the electrical resistance of the separating unit has a significantly higher value than if a pipeline over a corresponding length was only freed from paint, solvent, or cleaning agent, and was filled with air.

Abstract: The invention relates to a dryer for a lacquering facility: a) having a dryer housing, in which heated air is circulated, b) having an exhaust air line for a exhausting exhaust air from the dryer housing; c) having a combustion unit, which is connected to the exhaust air line, and which is used for thermal post-treatment of the exhaust air from the dryer housing and for providing hot air to a heat exchanger; d) wherein said heat exchanger is set up to supply said dryer housing with heated fresh air; and wherein e) at least one heating unit for heating the air circulated in said dryer housing is associated with said dryer housing. It is provided according to the invention that a combustion air supply of the heating unit is connected so it communicates with the dryer housing.

Abstract: An overhead conveyor system for transporting articles, especially for transporting vehicle bodies, in a treatment line comprises at least one transport carriage which has a fastening device to which at least one article can be fastened. The transport carriage can be displaced along the track by at least one drive means. The transport carriage is designed in such a manner that the fastening device can be transported at least along one section of the track, in a laterally offset manner with respect to the track. The invention further relates to a dip coating line comprising at least one dip-coating tank which can be filled with a treatment liquid, into which tank articles to be treated, especially vehicle bodies, are dipped. A conveying system can displace the articles to be treated towards the dip-coating tanker, into the inner edge of the dip-coating tanker, out of the dip-coating tank and away therefrom.

Abstract: The invention relates to a gate unit for gas-tight sealing of two adjacent high temperature zones within a high temperature oven, comprising a gate panel displaceable between an open position and a closed position within a guide structure. At least one sealing element is transported with the gate panel. Protecting means can be transported by the gate panel over at least one part of a transport path of the same, by which at least one segment of the sealing element can be protected over at least one part of the displacement path of the gate panel against influences harmful to the sealing element particularly against radiant heat. The invention further relates to a high temperature oven having an oven tunnel comprising a first high temperature zone and a second high temperature zone. The gate panel is disposed in a transition region between the first and the second high temperature zones.

Abstract: The roller conveyor for transporting good carriers, in particular skids used in the automobile industry, comprises a conveyor path consisting of several in series arranged roller path modules. Each roller path modules comprises two roller borders which are parallel to each other and between which at least one transport roller is arranged. The roller conveyor also comprises an operation unit movable with respect to the conveyor path. According to said invention, the operation unit is embodied in a modular manner and comprises the roller path module and moving gear modules fixed thereto.

Abstract: An electro-dipcoating apparatus is described in which, in conventional manner, a work-piece to be lacquered is dipped into a lacquer bath, moved through the latter, and lifted out again in a continuous process. Along the path of motion of the work-piece in the lacquer bath there are arranged electrodes which are connected to a first pole of at least one voltage source. Several contact rails extend parallel to one another without electrical interruption along the entire path of motion of the work-piece leading through the lacquer bath and are each connected to the second pole of varying voltage sources. To each work-piece a contact device is assigned which can be brought into communication with a respective one of the several contact rails and in this way applies the potential of the second pole of the corresponding voltage source to the work-piece. In this way, cuts in the contact rails are avoided that would result in wear of the contact devices and in increased control effort.

Abstract: The invention relates to an immersion treatment system, particularly an electrophoretic immersion coating system, comprising at least one immersion basin in a known manner that can be filled with a treatment fluid. A transport system guides the objects to be coated to the immersion basin, into the interior of the immersion basin, out of the immersion basin, and away therefrom. It comprises at least one transport car whereon a vertically displaceable carriage is disposed. A component defining a rotary axis is supported on the same, supporting a mounting device for the object to be treated. A motion sequence for the object can be achieved in said manner, comprising a superposition of a horizontal linear motion, a vertical linear motion, and a rotary motion about the rotary axis.

Abstract: An overhead conveyor system for transporting articles, especially for transporting vehicle bodies, in a surface treatment line comprises at least one transport carriage which has a fastening device to which at least one article can be fastened. The transport carriage can be displaced along a track carrying it by at least one drive means. The fastening device is received so that it can be rotated about a vertical axis of rotation. The invention further relates to a dip coating line comprising at least one dip-coating tank which can be filled with a treatment liquid, into which tank articles to be treated can be dipped. The dip coating line comprises a conveying system which displaces the articles to be treated towards the dip-coating tank, into the interior of the dip-coating tank, out of the dip-coating tank and away therefrom.

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.

Abstract: The invention relates to electrophoretic immersion lacquering of objects, e.g. the bodies of automotive vehicles, wherein the object which is to be lacquered is immersed into lacquer immersion basin containing a lacquer fluid. An electric field is produced by the object in its capacity as an electrode with at least one counter electrode. In order to determine the thickness of the lacquer layer applied in said manner, the electric charge flowing through the object during the immersion lacquering process and the surface of the object exposed to the lacquer fluid are determined in order to determine the thickness of the lacquer layer therefrom. The thickness of the lacquer coating can thus be determined during the immersion lacquering process, resulting in fewer rejects.

Abstract: A lifting station for vertically moving an object, in particular a vehicle body, in a surface treatment installation includes a fixed support structure and a vertically movable lifting cradle which is supported on the support structure and on which at least one conveying device is arranged. Energy for actuating the conveying device can be stored in an energy accumulator arranged on the lifting cradle. In this way, a trailing cable which supplies the conveying device with energy in different lifting positions is not required.

Abstract: A method and an installation for coating, especially painting, articles. The method is characterized by filling nonabrasive powder containers with the powdery coating material and transporting the containers to the vicinity of an application device. The powder containers are opened only in the vicinity of the application device and the powder is removed and then released by the application device onto the article to be coated. The avoids substantial dirtying of the transport paths that the powder containers are transported on, thereby eliminating the need for cleaning when the coating material is changed, especially when the coating powder is changed.

Abstract: An apparatus for air treatment includes at least one reservoir which can be filled with a liquid, an air-conveying device and a device which ensures that for the treatment of the air to be treated the air comes into contact with at least a part of the liquid. A circulating device is provided, by which liquid in the reservoir is conveyed in a circuit out of the reservoir and back into the latter. For the purpose of sterilising the liquid, a device for mechanico-physical opening of cell membranes, for instance by electroporation or cavitation, is provided in the circuit. Such an apparatus can also be used for purifying exhaust air in a surface treatment installation.

Abstract: The invention relates to a hot-air furnace module having a furnace space, which is at least partially delimited by walls and is assigned an air-delivery device for producing an airstream and a heat-transfer device for heating the airstream. According to the invention, an incoming-air channel is provided, which is formed between the air-feed device and the furnace space for guiding the airstream delivered by the air-feed device and which is provided with first and second throttle means, which are arranged at a distance from one another in the direction of flow and are intended to even out the airstream before it flows through the furnace space. Furthermore, according to the invention a hot-air furnace is formed from hot-air furnace modules which are rotated through 180 degrees with respect to one another and are in communication with one another.

Abstract: A roller conveyor in an as such known manner includes a plurality of driven rollers disposed in two parallel tracks. With each driven roller a drive motor is associated. From a first voltage source a first set of the driven rollers is supplied, wherein a second voltage source is provided, from which a further set of the driven rollers is supplied. This arrangement offers a high degree of redundancy in the event of the failure of individual components of the roller drive, thereby guaranteeing an emergency operation in such a situation.

Abstract: The invention relates to a plant for the treatment, in particular the cataphoretic dip coating of objects, in particular of vehicle chassis, comprising at least one transport car (5) which runs the objects (4) through the plant and introduces and retrieves the above to and from several treatment containers. The transport car (5) comprises a chassis (7, 8, 9 to 12), which travels along the trajectory of the objects (4), at least one pivot arm (50, 51), connected to the chassis (7, 8, 9 to 12), a mounting (61) joined to the pivot arm (50, 51), for at least one object. The translational displacement and the pivoting displacement of the at least one pivot arm (50, 51) and the mounting (61) are effected by independent drive devices.