摘要:
Apparatus for field emission spraying of metal or alloys in the liquid state has a field electrode nozzle array formed of a face plate 12 insoluble in but wettable by the liquid to be sprayed and having two or more conical nozzles 14therein. A reservoir 47 for the liquid is formed above face plate 12 and means 42 are provided to enable an electric current to be passed through the face plate whereby the latter heats and melts the metal to be sprayed.
摘要:
An air atomising nozzle assembly for electrostatic spray guns is disclosed. The nozzle assembly is made of plastic parts and includes an air cap having a central bore which surrounds a fluid nozzle tip. The nozzle has a nut formed on its forward end to facilitate threading of the rearward end of the nozzle tip into a threaded bore of the gun body. Formed on the front part of the nozzle, either as a part of the nut or a cylindrical surface adjacent the nut, is an accurately machined surface engageable in press fit relationship with a mating accurately machined bore of the air cap. These mating press fit surfaces centre the bore of the air cap relative to the nozzle tip so as to leave an annular, evenly dimensioned air flow passage surrounding the nozzle tip and defined between the nozzle tip and the bore of the air cap. The air cap is retained in a one-piece resilient retaining ring by snapping the air cap into an annular lip of the retaining ring. The retaining ring is then threaded onto the gun body to secure the nozzle assembly onto the gun body.
摘要:
A container (209) having attached to it at least one memory device (214) carrying information relating to the intended contents of the container (209); the device being operably connectable to operating means including means responsive to information communicated from said memory device (214) whereby an operation actively involving the contents of the container (209) may be performed in a manner at least partly determined by the characteristics of the contents.
摘要:
Apparatus for electrostatic spraying of liquid pesticides from a vehicle, in which the liquid spray delivery system (13) is controlled by signal means (26, 36) carried on a separately supplied spray container (10); and spray containers (10) for use in such apparatus.
摘要:
Method of forming and spraying emulsions of two immiscible liquids by introducing small amounts of highly charged disperse phase into a body of continuous phase followed by direct electrostatic spraying of the charged emulsions so formed. Also apparatus therefor.
摘要:
A container for the electrostatic spraying of liquids (especially pesticides) is described. It has an integral conductive spray nozzle, formed of two concentric tubes, in which an arrangement of axial ribs and grooves provides a liquid pathway to the nozzle mouth. Air is bled into the container through an extended pathway provided by a helical groove.
摘要:
A nozzle assembly for spray coating apparatus such as an electrostatic spray gun includes an air cap (50) having a central bore (52) which engages a nozzle member (26). The bore has a plurality of uniformly dimensioned axially aligned gas flow passages (62) evenly spaced about its circumference and a plurality of radially inwardly extending ribs (64) therebetween. In order to obtain uniform atomization of coating material and prevent the spray pattern to be badly distorted the side of a bore engages the outside surface of the nozzle member to positively align its centre axis on the axis of the central bore. The air cap and nozzle member thus cooperate to form a plurality of uniform gas flow passages around the nozzle (38) thereby producing a fineiy atomized uniform spray pattern of coating material emitted from the nozzle member.
摘要:
Zerstäuben von Pulver, insbesondere zum Beschichten von Gegenständen, durch Einbringen von das Pulver zerstäubendem Gas beim Ausstoßen des Pulvers aus einer Zerstäuberöffnung. Gewindeartig verlaufende Windungen (14) lassen das Zusatzgas im wesentlichen tangential aus dem Zusatzauslaß (10) in den Pulverkanal (3) einströmen, so daß das Zusatzgas dem Pulver im Kanal (3) nicht nur eine radial nach außen gerichtete Geschwindigkeitskomponente, sondern auch eine axiale Beschleunigungskomponente erteilt.
摘要:
A paint color change system (10) and method for sequentially supplying different color electrically conductive paints to an electrostatic applicator (23). paint is supplied through a supply hose (31 ) to a first isolated reservoir (21 ) and the supply hose (31 ) is purged and dried to form a voltage block. While paint is supplied through a first delivery hose (36) from the first reservoir (21) to an applicator (23), a second reservoir (22) is cleaned, paint is supplied to the second reservoir (22) through a supply hose (52), and the supply hose (52) is purged of paint and dried to form a voltage block. Upon completion of coating with the first color paint, the first delivery hose (36) is purged of paint and dried to form a voltage block and paint then is supplied from the second reservoir (22) through a second delivery hose (57) to the coating applicator (23). If the same color paint is applied from both reservoirs (21, 22), the first delivery hose (36) can be cleaned and dried after paint delivery from the second reservoir (22) has started to permit continuous coating.
摘要:
Der Hochspannungsschalter hat einen von einer Kolben-Zylinder-Einheit (27) linear längs einer Achse eines mit Isolieröl gefüllten Gefäßes (20) verschiebbar gelagerten Schaltkopf (10), auf dem mindestens zwei elektrisch leitend miteinander verbundene Kontaktstücke (aʹ, bʹ) angeordnet sind, die auf derselben Seite des Schaltkopfes (10) in achsparalleler Richtung je einen festen Gegenkontaktstück (a, b) zugewandt sind. Mindestens das eine Kontaktstück (a, b) jedes Kontaktstückpaares ist nachgiebig ausgebildet, so daß es dem jeweils anderen Kontaktstück bei der gegenseitigen Berührung elastisch nachgibt.