A paint nozzle used in a paint device has a paint channel that supplies paint, an air channel that supplies air, and a nozzle plate that is connected to the paint channel and the air channel. This nozzle plate is provided with a merging section that causes the paint and the air to merge and mix, and a discharge port that discharges, as paint particles, the paint and the air in a mixed state from the merging section. In addition, the interior of the nozzle plate has a tapered portion that connects the merging section and the discharge port and that tapers toward the discharge port on the distal end side.

A spraying apparatus for applying a friction modifying fluid to a railroad rail, comprising: a nozzle body disposed in a housing; a fluid inlet conduit in fluid communication with an opening in housing; a fluid inlet disposed in the housing in fluid communication with a first fluid conduit defined by or disposed in the nozzle body; wherein the first fluid conduit runs from fluid inlet to a hollow nozzle tip body disposed on and protruding through a bottom of housing and wherein fluid inlet is also disposed below, and in fluid communication with, the fluid inlet conduit; a control fluid supply line and an atomizing fluid supply line each partially disposed in the housing and each having respective portions external of the housing for connecting with the same fluid supply or respective fluid supplies; wherein the control fluid supply line injects a pressurized control fluid against a piston assembly disposed in a piston cavity; wherein the piston assembly carries stopper needle which is biased towards hollow nozzle tip body by a spring so that the needle closes a nozzle tip opening of hollow nozzle tip body; wherein the atomizing fluid supply line provides a pressurized atomizing fluid into hollow nozzle tip body to atomize the first fluid supplied by the first fluid conduit into the hollow nozzle tip body via a fluid cap disposed on the hollow nozzle tip body; wherein in operation the control fluid supply line and the atomizing fluid supply line are operated simultaneously while the first fluid is supplied by the first fluid conduit into the hollow nozzle tip body via a fluid cap such that the pressurized control fluid injected by control fluid supply line against a piston assembly displaces needle out of the nozzle tip opening and allows the first fluid to exit out of the nozzle tip opening where the first fluid is atomized by the pressurized atomizing fluid supplied by the atomizing fluid supply line.

The present invention concerns the provision of a novel glue application apparatus for controllably depositing glue on the mating surfaces of door components in a manner that provides adequate glue coverage while preventing the deposition of excessive amounts of glue. The glue application apparatus includes multiple glue dispensers having uniquely configured glue dispensing nozzles that are uniquely positioned at various angles to accommodate mating surfaces of different profiles.

A nozzle for spraying substances, more particularly dispersions, emulsions or suspensions, and to a method for the open-loop or closed-loop control of the volumetric flow rate of a substance to be sprayed and/or of a gas of a nozzle suitable for spraying substances, more particularly dispersions, emulsions or suspensions. The nozzle includes an inner tube discharge opening and a constriction in an inner tube channel carrying the substance to be sprayed at a distance from the inner tube discharge opening.

A liquid slurry spraying system for spraying highly viscous slurries, including those with solids content, while maintaining the slurry in agitated condition for optimum discharge. The spraying system includes a nozzle body with a liquid flow passage having a liquid slurry inlet adjacent an upstream end and a spray tip at a downstream end, a valve needle supported in the liquid flow passage for reciprocating movement between spray tip closing and opening positions, and a bladed rotor having a plurality of vanes rotatably supported on the valve needle for rotation as an incident to the direction of liquid slurry from said liquid inlet when the valve needle is in an open position for agitating the liquid slurry for direction to the spray tip.

An improved amplitude-modulating assembly for pneumatic spray guns. The amplitude-modulating assembly is configured inside the amplitude-modulating passage of the gun body, comprising an amplitude-modulating screw seat fixed with the gun body, and an amplitude-modulating rod going through the amplitude-modulating screw seat and in threaded connection with the amplitude-modulating screw seat. An amplitude-modulating seal ring is configured between the amplitude-modulating rod and the amplitude-modulating screw seat. The middle portion of the amplitude-modulating rod is configured with a clamping check ring. The clamping check ring is used to limit the position of the amplitude-modulating rod. The inner end of the amplitude-modulating rod is the amplitude-modulating portion. The amplitude-modulating portion is formed with a first inclined surface and a second inclined surface tilting toward the axis.

The disclosure relates to a needle valve for controlling a fluid flow of a coating agent (H, SL) in a painting system, particularly for controlling a fluid flow of a two-component mixture consisting of two coating agent components (H, SL), particularly a two-component paint made from a master batch (SL) and a curing agent (H), comprising a valve seat (7) and a displaceable valve needle (7) with a needle stem and a valve head (5), wherein the valve head (5) closes the valve seat (7) in a closed position of the valve needle (7), while the valve head (5) opens the valve seat (7) in an opened position of the valve needle (7). The disclosure provides a flexible membrane (18) which surrounds the valve needle (7) annularly and in a sealing manner upstream before the needle head (5).

A device for spraying a coating product in liquid form, includes a valve for controlling the flow of the liquid product, a piston, secured to a needle arranged to free or block a passage of liquid product, a valve body including a housing arranged to accommodate the piston, and including a control fluid supply connector arranged on the bottom dead center side of the piston, and the valve body is monolithic and further includes at least one control fluid supply channel accommodated in a side wall of the valve body and whose at least one longitudinal portion extends along part of the housing from the supply connector side to the top dead center side of the piston.

A plural component spray gun system for use with a reactor having a chemical supply, a heater, a pump and a compressor, includes a trigger module with a spool valve having an air inlet and an activating outlet and an deactivating outlet; and an air body connected to the trigger module by an intermediate extending portion and having a mixing chamber to combine pressurized chemical components upon activation of a piston by pressure from the activating outlet.

The disclosure relates to a coating agent valve (1) for controlling a flow of fluid of a coating agent mixture consisting of two coating agent components (H, SL), in particular a two-component paint consisting of a master batch (SL) and a hardener (H). The coating agent valve according to the disclosure (1) comprises a valve seat, a displaceable valve head (12), a valve drive (15) for displacing the valve head (12) and a displaceable valve needle (14, 20) which connects the valve drive (15) to the valve head (12) and moves the valve head (12) in correspondence with the valve drive (15). The disclosure provides for an automatic reduction in pressure in order to avoid excess-pressure damage upstream from the coating agent valve (1).