A multicolor powder center supplies at least one powder spraying device with different types of coating powder as required. The multicolor powder center has at least one powder container for receiving coating powder and at least one pump unit comprising at least one powder pump, in particular a dense flow pump or a diluted flow pump. The pressure side of the at least one powder pump is fluidically connected or can be fluidically connected to the powder inlet of a powder spraying device. The at least one powder container has at least one suction channel which is preferably formed in a suction pipe and which has a suction opening that opens into the interior of the powder container and an opposite discharge opening that opens into a connection, wherein the suction side of the at least one powder pump can be fluidically connected to the connection of the powder container.

A colour change system for a powder coating facility comprises a plurality of containers 24a-24e each with a different colour powders; a conduit for conveying powder from one of the containers 24a-24e to a coating applicator 12; a suction unit 18 connected to the conduit and having an end-piece with a powder-drawing inlet opening; a cleaning unit 34; a translation mechanism for moving the end-piece; and a controller. The containers 24a-24e and the cleaning unit 34 each have an opening 25 for receiving the end piece. The controller effects a change of powder colour by controlling the translation mechanism to extract the end-piece from a first container 24d, to move it to the cleaning unit 34, and after cleaning to move the end piece to a second container 24e. The system allows automated cleaning between colour changes, which reduces operating downtime.

A paint distribution system comprising a circulating pump configured to supply pressure to the system, in which the circulating pump has an input, configured to receive input data signals; a measuring device for measuring one or more parameters of a paint, in which the measuring device has an input, configured to receive input data signals, and has an output, configured to transmit output data signals, and in which the measuring device is positioned on a paint supply line in fluid communication with a paint color change assembly; and a controller having an input, configured to receive input data signals, and an output, configured to transmit output data signals. The output data signals from the controller are transmitted to the circulating pump to maintain or adjust circulating pump settings to control supply pressure to the system and maintain or adjust the parameters of the paint within a predetermined range.

A fluid recirculation and dispenser valve unit of a fluid comprises a fluid recirculation and dispenser valve and a cartridge in which an axial valve seat is made which at least partially houses said valve. Said valve comprises a valve body and a valve rod which extends partially in said valve body and which is axially movable between a closed rearward position of the valve and an open forward position of the valve. The axial valve seat comprises a proximal recirculation portion, which communicates fluidically with a recirculation duct, and a distal dispenser portion in fluidic communication with a dispenser duct.

A module for a modular changing device for coating materials, particularly for paints, having a housing, a fluid channel to which a fluid material is supplied from outside, and an outflow channel that can be connected to a consumer device and is connected to the fluid channel by a flow path. The flow path between the fluid channel and the outflow channel can be selectively closed or opened by a closing device. The fluid channel is a through-channel and extends between a first connection point accessible from the outside, on a first connection point side of the housing, and a second connection point, accessible from the outside, on a second connection point side of the housing, the two connection points of the fluid channel being complementary to each other in such a way that, for two interconnected modules, the second connection point of the first module and the first connection point of the second module are interconnected in a fluid-tight manner, and/or the outflow channel is a first outflow channel and the module comprises a second outflow channel or a plurality of other outflow channels, which are respectively connected to the fluid channel or to a plurality of fluid channels by a flow path.

A control method for a two-component spray system having first and second pumps for separate fluid components includes registering a target spray pressure, registering a material-specific pressure factor margin, sensing an output pressure of the second pump, and identifying a failure condition in the event that the sensed output pressure remains further than the pressure factor margin from the target spray pressure for at least a threshold time.

An installation for spraying a fluid comprising a fluid circulation circuit including a sprayer capable of spraying the fluid, a pump and a circulation pipe for the fluid, the pump being suitable for injecting the fluid into the circulation pipe, the circulation pipe being configured to guide the fluid from the pump to the sprayer, the installation further including at least one injector configured to inject a liquid separate from the fluid into the circuit, wherein the injector is configured to compare a total volume of liquid injected into the circuit to a predetermined volume, and to stop the injection when the total volume of injected liquid is equal to the predetermined volume.

A method for spraying a fluid using a fluid spraying installation including a pump, a sprayer capable of spraying the fluid and a fluid circulation pipe capable of conducting the fluid from the pump to the sprayer, upstream and downstream directions being defined for the fluid circulation pipe, the fluid circulating from upstream to downstream when the fluid passes through the pipe from the pump to the sprayer, the method including a step for the circulation, in the pipe, of a scraper from upstream to downstream in order to push the fluid contained in the circulation pipe back to the sprayer, the fluid pushed back by the scraper being sprayed by the sprayer.

A coating system for coating objects, wherein a coating material can be dispensed by an application device with a dispensing arrangement. A supply system having at least first and second feed containers for coating material are connected via first and second supply lines and first and second material valves, respectively, to the dispensing arrangement. Also provided is a cleaning system having at least one first cleaning line and a second cleaning line, to which rinsing agent can be fed via a first rinsing agent feed line and a second rinsing agent feed line, respectively. The first and second cleaning lines are connected via first and second cleaning valves to the first and supply lines, respectively. The first cleaning line and the second cleaning line are connected via a connection line at connection points disposed in front of each cleaning valve relative to the flow direction towards the dispensing arrangement.

The invention relates to a separating powder filter, particularly for supplying different types and/or sorts of powder, as selected, to a powder delivery device. The separating powder filter comprises the following: a first powder inlet, at least one additional, second powder inlet, and a powder outlet. Either the first powder inlet or the at least one second powder inlet can be fluidically connected to the powder outlet of the separating powder filter.