Abstract:
Apparatus for forming a 3D object from powder, comprising: a) delivery means adapted to emit a flow of powder at sufficiently high velocity to enable it to form the 3D object; b) positioning means adapted adjust the position of the delivery means; and c) control means adapted to control: i) movement of the positioning means; and ii) the velocity of the flow of powder.
Abstract:
The invention relates to removal from the working area of a dust and gas mixture produced by action of a processing tool on the material being processed. The present dust and gas valve is intended to be mounted in an apparatus for processing materials. The dust and gas valve comprises a casing adapted to accommodate a processing tool and to be connected to a system for aspirating the produced dust and gas mixture, and means for directing the dust and gas mixture into the casing. According to the invention said means comprises: a unit for directional supply of compressed air to the working area, and a dust and gas mixture flow guiding element having a lower surface disposed around the working area and streamlined for the dust and gas mixture flow.
Abstract:
A combined spray and vacuum nozzle includes a nozzle housing (12) containing a powder supply passage (24a) and a: vacuum withdrawal passage, where the powder supply passage and the vacuum withdrawal passage are arranged in a side-by-side relationship. The nozzle housing has a proximal end portion and a distal end portion. The distal end portion features a spray port in communication with the powder supply passage (24a) and a vacuum port in communication with the vacuum withdrawal passage. The spray port is positioned adjacent to too vacuum port. The proximal end portion of the nozzle housing adapted to communicate with a source of aspirated powder and a vaucuum source so that the powder supply passage (24a) communicates with the source of aspirated powder and the vacuum withdrawal passage communicates with the vacuum source.
Abstract:
An apparatus for applying a thermoplastic powder to internal threads of a fastener includes a vacuum nozzle (36) having an end adapted to engage a first surface of the fastener. A spray tube is sized to be inserted within the bore of the fastener and communicates with a source or sources of thermoplastic powder and pressurized air. A bushing (56) is mounted on the spray tube (54) so that the spray tube (54) is able to slide with respect to the bushing. The bushing is adapted to engage a second surface of the fastener. The spray tube and bushing are movable between clamping positions, where the vacuum nozzle and the bushing engage the first and second surfaces of the fastener, and release positions where the vacuum nozzle (36) and the bushing (56) do not engage the first and second surfaces of the fastener. A fastener holder holds the fastener between the vacuum nozzle and the bushing so that when the vacuum nozzle (36) and the bushing (56) are in the clamping positions, the spray tube (54) enters the bore of the fastener and sprays thermoplastic powder on the internal threads of the fastener with excess thermoplastic powder collected by the vacuum nozzle (36). The vacuum nozzle (36) and bushing (56) may be machined and to permit either, both or neither of first and second chamfers of the fasteners to also be coated.
Abstract:
There is provided a dispersion apparatus for use with a solid fuel burner. The dispersion apparatus comprises a passage through which particulate material may flow toward an outlet region for dispersal therefrom, the flow being at least in part rotational about the longitudinal axis of the passage. The dispersion apparatus also comprises a downstream guide means arranged within the passage at or near the outlet region, the downstream guide means configured to at least reduce the rotational motion so that the flow progresses toward the outlet region in a substantially uniform manner in a direction aligned with a longitudinal axis of the passage.
Abstract:
A cold spray nozzle assembly includes a conduit for carrying at least one of a heated gas and a powder; a nozzle; and a compression tube fitting connecting the nozzle to the conduit.
Abstract:
The invention relates to an Internal mix atomizing spray nozzle assembly (1), in particular for preparing a spray-dried lipid and protein component-containing composition, comprising a fluid nozzle (not shown) with a liquid flow passage having a liquid discharge opening directed into a mixing chamber, a spray tip (3) comprising the mixing chamber and having at least one discharge orifice (18) at its free end, an air supply system comprising an annular air flow passage (12) arranged at least essentially coaxial to the liquid flow passage (5) and having an annular air discharge opening (14) directed into the mixing chamber (16). It is planned that the annular air flow passage (5) is designed cylindrical with a constant cross section. A bypass flow passage (30) provides an anti-fouling air stream on the bottom (9) of the spray tip.
Abstract:
Die Erfindung betrifft zunächst einen Spender (1) zur Ausbringung einer insbesondere körnigen oder pulverförmigen Substanz (2) durch Ausblasen, mit einem Ausblaskanal und einer in den Ausblaskanal (4) mündenden Saugleitung (5), zum Einsaugen der Substanz (2) in den Ausblaskanal (4). Um einen derartigen Spender anzugeben, welcher zuverlässig und mit einfachen Mitteln, insbesondere im Handbetrieb, eine solche Nutzung ermöglicht, wird vorgeschlagen, dass in einem dem Ausblaskanal (4) vorgeschalteten, in Richtung auf den Ausblaskanal (4) durch ein druckabhängig öffnendes Ventil (6) verschlossenen Kanalabschnitt (7) ein Luft-Überdruck aufbaubar ist, zur druckgesteuerten Ausbildung einer Ausblasströmung in dem Ausblaskanal (4). Außerdem betrifft die Erfindung ein Verfahren zur Entleerung einer eine gefriergetrocknete Substanz aufweisenden Substanz-Aufnahme. Um ein derartiges Verfahren anzugeben, welches zuverlässig und mit einfachen Mitteln eine solche Nutzung ermöglicht, wird vorgeschlagen, dass die Substanz aus der Substanz-Aufnahme mittels eines in einen Blasstrom mündenden Saugluftstroms ausgesaugt und ausgegeben wird. Des Weiteren betrifft die Erfindung eine Verwendung eines Saug- /Blasspenders zur Entleerung einer eine gefriergetrocknete Substanz aufweisenden Substanz-Aufnahme.