Abstract:
Es wird ein Durchlaufmischer (16) angegeben, welcher zumindest eine drehbar gelagerte Welle (17) mit mehreren auf der Welle (17) angeordneten und schräg zur Welle (17) ausgerichteten Schaufeln (18) umfasst. Außerdem weist der Durchlaufmischer (16) eine erste Einfüllöffnung (19), eine davon in Längsrichtung der zumindest einen Welle (17) beabstandete Auslassöffnung (20) sowie eine zwischen der ersten Einfüllöffnung (19) und der Auslassöffnung (20) angeordnete zweite Einfüllöffnung (21) auf. Des Weiteren wird eine Schaufel (18) für einen Durchlaufmischer (16) der genannten Art, eine Vorrichtung (1) und ein Verfahren zur Herstellung einer Platte (9) aus Kunststeinmaterial unter Verwendung des Durchlaufmischers (16) sowie ein Verfahren zur Herstellung eines Zwischenprodukts für die Herstellung von Kunststein angegeben.
Abstract:
The invention relates to an apparatus for mixing a gaseous or liquid substance into fiber suspension. The apparatus comprises a tubular body (12), which defines a space that forms a flow channel for the suspension, in which body an inlet (14) and an outlet (16) for the suspension are arranged so that the suspension flows through the flow channel mainly in the axial direction. Further the apparatus comprises a feed member (22) that extends into the flow channel transversely against the flow direction of the suspension and has a cylindrical wall (24) provided with openings (26) for leading the substance from the feed member into the flow channel. At least one protrusion (28) is arranged on the inner surface of the tubular body in the region the feed member. A throttling member (32) is arranged in the flow channel downstream of the feed member in the flow direction of the suspension, and a mixing chamber (36) is formed in the flow channel between the feed member and the throttling member.
Abstract:
In order to create a rotor/stator system in a simple design manner, with which stable dispersions can be produced in one passage and which can be adapted to changing requirements in regard to the composition of the dispersion, the invention provides a stator (11) for a rotor/stator system having a dispersion region, which together with a rotor (4) corresponding to the stator (11) defines a dispersion chamber of the rotor/stator system, and further having an inlet (15) for feeding a first component of a dispersion into the dispersion region, wherein at least one pre-mixing chamber (2) is arranged inside the stator and outside the dispersion region, said chamber opening into the dispersion region. The stator (11) comprises at least one inlet (25) for feeding a further component of the dispersion from outside the stator (11) into the pre-mixing chamber (2). The stator (11) is configured such that, during operation of the stator, components of the dispersion enter from the dispersion region and from the inlet (25) into the pre-mixing chamber (2), are mixed with each other and exit from the pre-mixing chamber (2) into the dispersion region.
Abstract:
L' invention se rapporte de façon générale à un dispositif (1) de dépôt d'un mélange de poudres pour la formation d'un objet à gradients de composition, comportant : une pluralité de réservoirs (R1, R2) respectivement destinés à contenir des poudres différentes (A1, A2); - un mélangeur de poudres (30) placé sous les réservoirs et comportant un organe de mélange (32) monté à rotation; une pluralité de moyens (4, 6) de distribution de poudre coopérant respectivement avec les réservoirs, et chacun conçu pour réguler le débit de masse de la poudre s' échappant de celui-ci en direction du mélangeur; - un collecteur de mélange de poudres (56) placé sous le mélangeur; et - un distributeur de mélange de poudres (60) placé sous le collecteur.
Abstract:
Um auf konstruktiv einfache Weise ein Rotor-Stator-System zu schaffen, mit dem in einem Durchlauf stabile Dispersionen hergestellt werden können und das flexibel auf wechselnde Anforderungen hinsichtlich der Zusammensetzung der Dispersion angepaßt werden kann, schafft die Erfindung einen Stator (1) für ein Rotor-Stator-System (6) mit einem Dispergierbereich (17), welcher mit einem zu dem Stator (1) korrespondierenden Rotor (4) einen Dispergierraum (7) des Rotor-Stator-Systems (6) definiert und mit einem Einlaß (15) zum Zuführen einer ersten Komponente einer Dispersion in den Dispergierbereich (17), wobei im Inneren des Stators mindestens eine Vormischkammer (2) außerhalb des Dispergierbereiches (17) angeordnet ist, welche sich in den Dispergierbereich (17) hinein öffnet, und wobei der Stator (1) mindestens einen Zulauf (25) zum Zuführen einer weiteren Komponente der Dispersion von außerhalb des Stators (1) in die Vormischkammer (2) aufweist und wobei der Stator (1) derart ausgebildet ist, daß im Betrieb des Stators Komponenten der Dispersion von dem Dispergierbereich (17) aus und von dem Zulauf (25) aus in die Vormischkammer (2) eintreten, dort miteinander vermischt werden und aus der Vormischkammer (2) in den Dispergierbereich (17) austreten.
Abstract:
Apparatus for delivering a fluid, especially for delivering colourants or the like to a premixer stage of plastics forming equipment, for example an injection moulder of extruder is described. The apparatus includes a fluid supply means (4, 200) connected to a reservoir (8, 208) which is arranged to concertina between minimum and maximum volume conditions. The reservoir (208) is connected via pipeline (24) and peristaltic pump (26) to a delivery means which is arranged to deliver the fluid to a desired location. When the fluid supply means (200) is empty, the level of fluid in the reservoir (208) will fall below the level of a capacitance sensor (32) which will sense the presence of air and cause a signal to be output to alert an operator to change fluid supply means (4). The fluid supply means may be changed before the reservoir is empty of fluid and, accordingly, the process may be operated continuously, even during the replacement of a reservoir (4).
Abstract:
Apparatus for delivering a fluid, especially for delivering colourants or the like to a premixer stage of plastics forming equipment, for example an injection moulder of extruder is described. The apparatus includes a fluid supply means (200) connected to a reservoir (208) which is arranged to concertina between minimum and maximum volume conditions. The reservoir (208) is connected via pipeline (24) and peristaltic pump (26) to a delivery means which is arranged to deliver the fluid to a desired location. In normal operation, fluid supply means (200) supplies fluid into reservoir (208). When however the fluid supply means (200) is empty, the level of fluid in the reservoir (208) will fall below the level of a capacitance sensor (32) which will sense the presence of air and cause a signal to be output to alert an operator to change fluid supply means (4). The fluid supply means may be changed before the reservoir is empty of fluid and, accordingly, the process may be operated continuously, even during the replacement of a reservoir (4). After replacement of a fluid supply means (4), the reservoir (208) is moved towards its minimum volume, to expel air into the fluid supply means (4), so that the reservoir (208) can be filled with fluid from the reservoir and there is substantially no air in the reservoir to become entrained with fluid as it passes via peristaltic pump (26) to a desired location.
Abstract:
Die Erfindung bezieht sich auf eine Vorrichtung zur Zubereitung von Kosmetika und ein entsprechendes Verfahren zur Zubereitung von Kosmetika unter Verwendung der Vorrichtung.
Abstract:
The present invention is directed generally to devices and methods for controlling fluid flow in meso-scale fluidic components in a programmable manner. Specifically, the present invention is directed to an apparatus and method for placing two microfluidic components in fluid communication at an arbitrary position and time, both of which are externally defined. The inventive apparatus uses electromagnetic radiation to perforate a material layer having selected adsorptive properties. The perforation of the material layer allows the fluid communication between microfluidic components allowing volumetric quantitation of fluids. Using the perforation of the material functionality such as metering and multiplexing are achieved on a microscale. This functionality is achieved through basic operations, like dosimeters filling, dosimeters purging, dosimeters extraction, dosimeters ventilation and channels routing. Accordingly, these operations are performed in microfluidic platforms and are characterized extensively, allowing the realization of complex assays in a miniaturized format, where dilutions of proteins and assay readout can be performed in an extremely small footprint.
Abstract:
A bridge (30) comprises a first inlet port (31) at the end of a capillary, a narrower second inlet port (32) which is an end of a capillary, an outlet port (33) which is an end of a capillary, and a chamber (34) for silicone oil. The oil is density-matched with the reactor droplets such that a neutrally buoyant environment is created within the chamber (34). The oil within the chamber is continuously replenished by the oil separating the reactor droplets. This causes the droplets to assume a stable capillary- suspended spherical form upon entering the chamber (34). The spherical shape grows until large enough to span the gap between the ports, forming an axisymmetric liquid bridge. The introduction of a second droplet from the second inlet port (32) causes the formation of an unstable funicular bridge that quickly ruptures from the, finer, second inlet port (32), and the droplets combine at the liquid bridge (30). In another embodiment, a droplet (55) segments into smaller droplets which bridge the gap between the inlet and outlet ports.