Abstract: A screen apparatus for screening granulate, in particular moist and/or dry granulate, having a screen housing having a base, a cover and a side wall, an inlet for the granulate arranged on the screen housing, an outlet for the screened granulate arranged on the screen housing, a screen arranged in the screen housing and an inlet for transfer air. The outlet for the screened granulate, which is arranged on the screen housing is arranged on the side wall of the screen housing.

Abstract: Provided is a device for granulating, agglomerating, pelletising, drying and/or coating, the device including a swirl chamber, a distribution chamber, wherein the swirl chamber is separated from the distribution chamber by a base and wherein a powder to be granulated or a powder mixture to be granulated is presented in the swirl chamber, the device further including at least one agitator for thoroughly mixing the powder to be granulated or the powder mixture to be granulated and at least one addition device for a liquid, wherein the base is designed in several parts and at least one base part is horizontally and/or vertically displaceable, with the result that that the base becomes a distributor plate. Also provided is a method for granulating, agglomerating, pelletising, drying and/or coating using such a device and a base suitable for use as a distributor plate in a convective drying apparatus.

Abstract: Provided is a device for granulating, agglomerating, pelletising, drying and/or coating, the device including a swirl chamber, a distribution chamber, wherein the swirl chamber is separated from the distribution chamber by a base and wherein a powder to be granulated or a powder mixture to be granulated is presented in the swirl chamber, the device further including at least one agitator for thoroughly mixing the powder to be granulated or the powder mixture to be granulated and at least one addition device for a liquid, wherein the base is designed in several parts and at least one base part is horizontally and/or vertically displaceable, with the result that that the base becomes a distributor plate. Also provided is a method for granulating, agglomerating, pelletising, drying and/or coating using such a device and a base suitable for use as a distributor plate in a convective drying apparatus.

Abstract: A drum coater for applying a surface layer on bulk-like materials includes a rotatably mounted drum for accommodating bulk-like materials, inlet and outlet openings, at least one spray nozzle for applying the surface material, a drying device for a drum interior, at least first and second radially-offset mixing tools in the drum, the first mixing tool protruding into the drum interior. The at least one second mixing tool has at least one mixing surface such that the first mixing tool is at least partially arranged on the drum inner surface and the at least one second mixing tool has at least one opening on the at least one mixing surface. A mixing tool to be used in a drum coater to gently blend and/or homogenize bulk-like materials has a first mixing surface angled relative to a second mixing surface, at least one mixing surface having at least one opening.

Abstract: A drum coater for applying a surface layer on bulk-like materials includes a rotatably mounted drum for accommodating bulk-like materials, inlet and outlet openings, at least one spray nozzle for applying the surface material, a drying device for a drum interior, at least first and second radially-offset mixing tools in the drum, the first mixing tool protruding into the drum interior. The at least one second mixing tool has at least one mixing surface such that the first mixing tool is at least partially arranged on the drum inner surface and the at least one second mixing tool has at least one opening on the at least one mixing surface. A mixing tool to be used in a drum coater to gently blend and/or homogenize bulk-like materials has a first mixing surface angled relative to a second mixing surface, at least one mixing surface having at least one opening.

Abstract: The invention relates to a device for coating or encapsulating particles, including a drum (2) which is mounted in a drum chamber (1) of the device in a rotationally drivable manner and which drum (2) can be filled with the product to be coated or to be encapsulated, at least one spray nozzle, which is provided for applying a liquid to the product that is located in the drum (2), at least one drying gas inlet (5) that penetrates the chamber wall of the drum chamber (1), through which drying gas inlet a drying gas can be introduced into the drum chamber (1) and including at least one drying gas outlet (9) that is near the drum (2) on the outer side for channeling the drying gas out of the device.

Abstract: The film coating device having a perforated drum is provided with a stationary NIR measuring unit on the outside of the rotating drum wall. The measurement is made through the drum wall.

Abstract: The multicell apparatus according to the invention is suitable for batchwise and in particular quasi-continuous operation, i.e. for the continuous processing of batches in rapid succession, for example for the preparation of readily free-flowing granules which are suitable for filling in capsules or sachets. The apparatus is in particular a multifunctional system which combines the process steps of batch introduction, metering, mixing/granulation, drying, product cooling and product collection with one another in a very compact design. The individual batches are conveyed inside the apparatus through a product path which is hermetically sealed from the outside and in which an internal pressure lower than the ambient pressure may additionally prevail at least in sections. This, together with the cleaning nozzles connected to a central cleaning system, permits contamination-free operation both with aqueous and with organic starting materials.

Abstract: A drum for holding, moving and treating a particulate material is rotatable about its axis and has a metallic wall enclosing the axis and provided with perforation holes. A wire fabric has wires sintered to one another, rests essentially with its entire outer surface against the inner surface of the wall, is sintered essentially over its entire outer surface to the wall and separates the perforation holes thereof from the free interior space of the drum. Since the wire fabric rests essentially with its entire outer surface against the wall, no particulate material can enter between the wall and the wire fabric. The wire fabric is durable and can be cleaned rapidly and readily together with the rest of the drum.

Abstract: A valve apparatus comprises two housings which can be alternatively connected to one another and separated from one another and possesses an orifice. Each housing holds a flap which is pivotable about an axis of rotation and has a disc and a pivot. The flap can be swivelled into a closed position in which it closes the orifice of the relevant housing at the flat mouth surface of the orifice. Each axis of rotation passes through the mouth area of the relevant housing at an acute angle. Each pivot is pivotably mounted in a hole of the relevant housing, which hole completely surrounds said pivot in cross-section, and is sealed from the housing. This gives a stable support and good sealing of the pivots and, in combination with the discs adjacent to one another when the housings are connected together, makes it possible to avoid contamination of the environment by the transferred material and contamination of the latter by materials present in the vicinity of the housing.

Abstract: The apparatus has a container which contains a first filter. During operation, this separates the first interior region containing particulate material from a second interior region. The latter is connected to a downstream dust separator. This has a housing which contains a second filter. The apparatus furthermore has a fan, at least one dust concentration sensor and a control device connected to this and to the fan. During fluidization and treatment of the particulate material in the first interior region of the container, the dust concentration in the oxygen-containing gas flowing from the first filter to the second filter and usually consisting of air is measured. If the dust concentration is at least equal to a predetermined limit below the lower explosion limit, the control device switches off the fan. This makes it possible to keep the pressures generated by any dust explosion relatively small.

Abstract: A particulate material containing particles to be agglomerated and/or provided with a coating is introduced in batches into a space bounded by a container, in which a gas, in particular air, is passed through the particles. The particles are set in motion, for instance by the gas, such as in whirling motion, to form a whirling, layer. The particles are wetted by means of a mixture consisting of a gas and the vapor of a wetting agent. This mixture is introduced into the space containing the particles, and cold gas and a mixture of warm gas and wetting agent are supplied for example, alternately. In this manner, the particles may be wetted uniformly and relatively fast, and held at a relatively low temperature. This is of considerable advantage when processing thermolabile materials.

Abstract: The particles of the particulate material to be dried are cooled before the drying operation proper, or in the initial phase thereof, to a temperature low enough to make the liquid to be extracted solidify. At least the drying operation proper is carried out in a space bounded by a container, in which a gas, more particularly air, is passed through the particles. While in said space, the particles are subjected to motion, for example, they are whirled by the gas to form a whirling layer. The temperature of the gas is adjusted to have at least a considerable part of the drying operation take place by sublimation, the heat energy required for the sublimiation being supplied to the particles at least in part by the gas passed through them. In this way, the particulate material may be dried with care and nevertheless in relatively large batches, and with limited time expenditure.

Abstract: A particle coating apparatus is provided with a housing containing a drum open at both its ends and comprising a perforated cylindrical mantel. The drum is allowed to rotate and pivots at one of its ends with a bearing. An air transmission shoe having an opening arranged at one of the lower quadrants of the drum. The opening is adjustable and extends along the contour of the drum. The opening directs the gas through the tablets. The drum has a taking opening extending along the entire width of the mantel. The opening may be closed by a hinged pneumatic shutter. The bottom of the housing located under the drum has an opening which may be closed. When the tablets contained in the drum are coated, they may come out under the effect of gravity after the release of the taking opening and of the bottom opening of the housing.

Abstract: A clean-room chamber designed as a walkable clean-room cabin (1) has a front wall (7) with an entrance (13). A machine, e.g. a tablet press (41) is placed in the cabin. Above the entrance (13), a vertically adjustable air-supply member (17) for the formation of an air-curtain (71) is arranged. On the ceiling (11) of the cabin (1), in its front part, an air-supply member (29) with an outlet that is vertically adjustable and may be swung around a horizontal axis of rotation that is parallel to the front wall (7), has been mounted. With the aid of that outlet, a dust-displacement current is generated that is directed toward the machine (41) and but slightly turbulent. In the lower part of the rear wall (9), an exhaust device (43) has been mounted that is connected with the inputs of two blowers (27), the outputs of which are connected with the air-supply members (17, 29), while the air is filtered by means of high-performance mechanical filters (25 ) before being fed into the cabin.

Abstract: A process and apparatus for coating particles, particularly particles of medicinal drugs. The apparatus has a rotating drum provided with a perforated cylindrical center section. Particles to be coated are introduced into the interior of the drum and form a layer in a lower quadrant of the cylindrical section during rotation of the drum. A spraying device is located in the interior of the drum for coating the particles with an appropriate mixture or solution. A device is positioned adjacent the portion of the drum containing the particles for introducing gas through the perforations into the layer of particles so as to dry the particles. A device also is provided for removing gas from the drum through the perforations. The device for introducing gas can be separated from the device for removing gas by a central partition, with both devices being carried by a common support. Also, it is possible to introduce gas into a portion of the interior of the drum that is spaced from the layer of particles.

Abstract: A device for the formation of a granulated substance. The device has a container which is open at the bottom and can be closed off by a movable bottom member of solid construction. Additionally, two other bottom members, which have lattices with different mesh widths or openings, can be optionally moved under the container instead of the solid member, which bottom member does not have openings. A stirrer is arranged in the container, which has a top container section that contains a filter connected to a suction fan. In order to form a granulated substance, the container is first closed off by the solid bottom member and a powdery material and a liquid are introduced into the container for mixing with each other by means of a stirrer. Subsequently, the solid bottom member is replaced by one of the lattice bottom members and warm air is drawn into the container. In this way, the humid mixed material is whirled about, dried and granulated.