Abstract: A method and to a device for drying a powdered and/or granular material for additive manufacturing, in particular for drying a metal powder or a metal powder blend. The material to be dried is contained in an evacuable volume, in particular in a vacuum conveyor. The evacuable volume is fluidically connected to a vacuum pump arrangement. The vacuum pump arrangement is fluidically connected on the inlet side to the evacuable volume and on the outlet side to the surroundings of the evacuable volume. The vacuum pump arrangement on the outlet side comprises a sensor for recording the moisture in the fluid pumped out of the evacuable volume, with the sensor being used to record the residual moisture in the powdered and/or granular material as a function of the moisture in the fluid that is pumped out.

Abstract: The invention relates to a device (1) for the production, in particular the production and metering, of a powder mixture for an additive manufacturing process. The powder mixture for the additive manufacturing process comprises a first powder arranged in a first container (2), and at least one further, in particular a second, powder arranged in at least one further, in particular a second, container (2?). An inlet of a first means of powder transport and/or metering (4) is arranged at the outlet (6) of the first container (2), and an inlet of a further, in particular a second, means of powder transport and/or metering (4?), is arranged at the outlet (6?) of the further, in particular the second, container (2?).

Abstract: An operating and changing apparatus for a filter body located at a filter position that displays a filter body axis of symmetry located at a filter position and in which a particle filter is integrated in order to remove particles from a particle-laden fluid. The filter body has a fluid-permeable filter body opening and a fluid-impermeable filter body wall section. The apparatus has a housing that the fluid can flow through with a flow channel in which the filter body is so positioned that the fluid can flow through the particle filter. The flow channel has a flow inlet and a flow outlet such that the fluid flow between flow inlet and outlet runs through the particle filter of the filter body. The flow channel has a channel axis which runs parallel/collinear with the filter body's axis. The flow inlet and outlet are offset to each other, relative to the channel symmetric axis.

Abstract: An operating and changing apparatus for a filter body located at a filter position that displays a filter body axis of symmetry located at a filter position and in which at least one particle filter is integrated in order to remove particles from a particle-laden fluid. The filter body exhibits at least one fluid-permeable filter body opening and at least one fluid-impermeable filter body wall section. The operating and changing apparatus includes a housing that the fluid can flow through but is otherwise impermeable with a flow channel in which the filter body is so positioned that the fluid can flow through the particle filter. In the housing, the flow channel with at least one flow inlet to allow the particle-laden fluid to flow in and at least one flow outlet to allow the particle-free fluid to flow out is arranged in such a way that the fluid flow between flow inlet and flow outlet in the flow channel runs through the particle filter of the filter body.

Abstract: A screening system for separating/screening a conveying medium formed as fluid, powder and/or bulk material comprising a screening system inlet, a screening system outlet, a screen between the inlet and outlet, a feeding system for feeding the medium upstream of the inlet and/or the screen, a transport path between the inlet means and the outlet means, which is delimited by a conveyor channel line, a flow-limiting means wherein the volume flow of the conveying medium can be changeably limited is arranged in or down-stream from the transport path that comprises a flat transport surface, which is formed as a flat metering plate and a metering plate edge forms the outlet means of the feeding system, the flow-limiting means comprises an outlet opening wherein the outlet opening size can be changed to change the volume flow of the medium, which passes through the outlet opening that is arranged at the end of a conveyor channel or line of the feeding system, the outlet opening is arranged between the conveyor chann