Abstract:
An integrated liquidjet system capable of stripping, prepping and coating a part includes a cell defining an enclosure, a jig for holding the part inside the cell, an ultrasonic nozzle having an ultrasonic transducer for generating a pulsed liquidjet, a coating particle source for supplying coating particles to the nozzle, a pressurized liquid source for supplying the nozzle with a pressurized liquid to enable the nozzle to generate the pulsed liquidjet to sequentially strip, prep and coat the part, a high-voltage electrode and a ground electrode inside the nozzle for charging the coating particles, and a human-machine interface external to the cell for receiving user commands and for controlling the pulsed liquidjet exiting from the nozzle in response to the user commands.
Abstract:
Devices, systems, and methods for charging fluids are disclosed. The charging of fluids improves the mixing of fluids in microfluidic systems. The charging is performed by producing an ion field between an ionizing electrode and an opposed ground electrode. A fluid-containing vessel is positioned between the opposed electrodes and the ion field charges the fluid in the vessel.
Abstract:
A method of stripping, prepping and coating a surface includes first stripping the exiting coating from a surface, using continuous or pulsed fluid jet, followed by prepping the surface by the same fluid jet. The method also provides entraining particles into a fluid stream, if desired to generate a particle-entrained fluid stream that is directed at the surface to be stripped and prepped. The particles act as abrasive particles for prepping the surface to a prescribed surface roughness required for subsequent application of a coating to the surface. The method then entails coating the surface by electrically charging particles having the same chemical composition as the particles used to prep the surface. Finally, a charged-particle-entrained fluid stream is directed at high speed at the charged surface to coat the surface. The particles form both mechanical and electronic bonds with the surface.
Abstract:
An electrostatic painting method includes supplying, via a pure water supply passage, pure water to a paint tank within which paint is stored, applying a voltage to paint that is pushed out from the paint tank by the supplied pure water, and spraying the paint to which the voltage has been applied, at an object to be painted. Pure water remaining in the pure water supply passage is replaced to increase an electrical resistance value of the pure water before starting to paint the object to be painted.
Abstract:
A system to apply mainly phytosanitary products that use the principle of electrostatic attraction. A high static charge is imprinted on the microdrops in the nozzle with high flows of water using a simple industrial design and very low probabilities of failure. The system is very stable and reliable. An active water provider capillary tube is optionally used in the nozzles (as opposed to a fixed one), which results in a more efficient use of the air to micronize drops. The nozzles can be fixed or dirigible nozzles. A chemical product doser system is optionally used with injection in the nozzle itself.
Abstract:
An electrostatic atomization device (A) for increasing hydrophilicity of collected matter (15) that has low hydrophilicity and is attached to a surface of a processing subject (1). The device includes an atomization electrode (6), which generates electrostatically charged atomized water droplets to increase the hydrophilicity, a water supply member (8), which supplies water to the atomization electrode (6), and a voltage application member (9), which applies voltage to the water supplied to the atomization electrode (6).
Abstract:
A lubricant dispensing system is provided. The dispensing system includes a lubricant supply, a lubricant dispensing nozzle and a control panel. The dispensing nozzle includes a nozzle body with a fluid passageway therein which is in fluid communication with the lubricant supply, an electrode assembly for electrostatically charging lubricant in the fluid passageway and at least one discharge orifice through which electrostatically charged lubricant can be discharged. The discharge orifice is defined by at least one spray needle having a first end in fluid communication with the fluid passageway and a second end that extends outward of the nozzle body. The control panel directs the flow of lubricant from the lubricant supply to the lubricant dispensing nozzle and controls the electric power supplied to the electrode assembly.
Abstract:
An electrostatic spraying assembly is provided. The spraying assembly includes a housing having a fluid inlet passage that is connectable to a fluid source and communicates with a plurality of discharge passageways each of which extends through the housing to a downstream end at a discharge end of the housing. The housing has a one piece construction and is made of an electrically insulative material. The spraying assembly also includes an electrode assembly. The electrode assembly includes a plurality of elongate electrode elements each of which is disposed in a respective one of the discharge passageways in the housing and an electrode header. The electrode header is electrically connectable to a voltage source and each of the electrode elements is electrically connectable to the electrode header.
Abstract:
A method of electrostatically coating an article (35) with paint includes projecting the paint from a gun nozzle (33) in a plurality of atomized particles, establishing an electric field (32) between an electrode (29) and the nozzle (33) sufficient for imparting an electric charge of one polarity to the particles at the nozzle (33), and establishing a zone of ions (80) in the pathway of the particles for neutralizing and reversing the polarity of a portion of the charged particles eminating from the nozzle (33). The plurality of diversely charged particles are attracted to the electrically charged article (35) along different individual paths in order to more uniformly paint irregular surfaces.
Abstract:
An apparatus for the electrostatic application of a coating material in the form of a liquid to articles or the like comprising a nozzle at the region of which there are provided at least two electrodes at which there is applied high-voltage of the same polarity but of different magnitude. The electrical field between the electrodes covers the nozzle opening in the form of a transverse field.