Abstract:
The invention relates to a paint-spraying apparatus for generating a shaped paint jet, including a paint nozzle positioned in an annular gap, wherein the paint nozzle comprises a needle with a needle head and also comprises a paint outlet opening, wherein the needle head is displaceable with respect to the paint outlet opening over a longitudinal axis of the needle in order to control a needle valve formed from the paint outlet opening and the needle head, and wherein the needle head, in a closed position of the paint nozzle, plugs in a form-fitting manner with respect to the longitudinal axis in the paint outlet opening, wherein the paint outlet opening is rotatable together with the needle head about the longitudinal axis in order to rotate the orientation of the shaped paint jet with respect to the longitudinal axis.
Abstract:
A fluid ejection device is provided. The fluid ejection device includes at least one accelerating unit disposed inside the device for accelerating the fluid before it is ejected out, for increasing the velocity of the ejected fluid.
Abstract:
A substantially planar assembly for depositing material. The assembly comprises plates which, when assembled, define at least one aerosol channel, a sheath gas plenum, and a nozzle. These components are preferably anisotropic, and preferably rectangular. The aerosol channel may be divided further to improve uniformity of aerosol flow.
Abstract:
A coating apparatus comprising: a slot nozzle spraying apparatus provided with a pair of inner die blocks and outer die blocks at the outside of said pair of inner die blocks, having a coating solution nozzle formed between said pair of inner die blocks, and gas nozzles constituted between one inner die block and outer die block adjacent thereto, and between another inner die block and outer die block adjacent thereto, wherein, angle β between the solution flow passage of said coating solution nozzle and the gas flow passage of one of said gas nozzle is 15-60 degree.
Abstract:
A method for applying a foam composition to a paper web is provided. Specifically, a foam applicator is positioned adjacent to a surface of the web. The foam applicator comprises an extrusion head defining an extrusion channel through which the foam composition is capable of flowing. The foam applicator further defines a dispensing slot through which the foam composition is capable of exiting the foam applicator. The method also includes flowing the foam composition through the extrusion channel of the foam applicator. The foam composition is impinged with at least one gaseous stream (e.g., air stream) to fragment or break up gaseous bubbles contained therein.
Abstract:
As a wrist portion (14) of an application robot equipped with a plurality of application nozzles (15a, 15b) moves in a predetermined operation pattern, viscous damping and constraining materials having different properties are simultaneously injected from the application nozzles in such a manner that immediately after the damping material is injected from the preceding application nozzle (15a), as viewed in the moving direction (outline arrow in FIG. 5), and applied to a vehicle body panel (11) as an underlayer material, the constraining material having different property is injected from the succeeding application nozzle (15b), as viewed in the moving direction, and applied as an overlayer material over the underlayer material.
Abstract:
There is claimed a method for depositing fluid material from a linear nozzle in a substantially uniform manner across and along a surface. The method includes directing gaseous medium through said nozzle to provide a gaseous stream at the nozzle exit that entrains fluid material supplied to the nozzle, said gaseous stream being provided with a velocity profile across the nozzle width that compensates for the gaseous medium's tendency to assume an axisymmetric configuration after leaving the nozzle and before reaching the surface. There is also claimed a nozzle divided into respective side-by-side zones, or preferably chambers, through which a gaseous stream can be delivered in various velocity profiles across the width of said nozzle to compensate for the tendency of this gaseous medium to assume an axisymmetric configuration.
Abstract:
A spray apparatus has first and second elongate ducts. The material to be sprayed, which may be solid or liquid, is delivered through the first elongate duct to an elongate slot-shaped nozzle or other means for distributing it. To reduce disturbance by de-energizing ambient air currents, the second elongate duct supplies air to first and second air distribution outlets, each of which defines an elongate slot-shaped nozzle. The nozzle is directed outwardly, away from the air distribution mechanism and towards the surface on which the material is to be distributed, so as to form air curtains on either side of the elongate ducts. The elongate air distribution outlet can form an elongate slot-shaped nozzle having a convergent inlet section, a throat section and a diffuser section extending to an outlet port. It can also include fins extending into the air duct, to deflect air from the air duct through the slot-shape nozzle.
Abstract:
A device for linear spraying of a liquid includes a series of tubes (3.sub.1) which supply liquid from a supply pipe (4) to an elongated spray nozzle (7) in the wall of a chamber (1) and a pipe (2) for delivering gas to the chamber to drive the liquid out of the enclosure. An elongate element (5) is provided in the enclosure to receive the liquid from the feed means. The liquid is spread over a convex surface (5.sub.1) of the element and is then carried off by the gas and flows to two elongate slits (8.sub.1,8.sub.2) adjacent to the nozzle (7) and converging towards the latter. The width of these slits varies periodically and interdependently over their length to form two sheets of the liquid/gas mixture which come together at the nozzle (7) to form at its outlet a mist of liquid confined within an angle (.alpha.) from the nozzle.
Abstract:
An outlet slot (A) for generating a spray curtain (C) is defined by mutually abutting outlet faces of two outer nozzle elements (30) and one central nozzle element (31), all being connected to a support body (10) and separable from each other. At least the two outlet faces (32) of the central nozzle element (31) have a profiled structure roughened, for instance, by sandblasting and to permit discharge of the liquid. Two nozzle slats (40) are connected to the support body (10) and the two nozzle elements (30) are arranged between them. Together with one nozzle slat (40) each the two nozzle elements (30) define a gas outlet slot (D) which likewise extends along the spray curtain (C) to be formed.