There’s a great pressing need for electrostatic sensitive spray gun for small-scale farms in India spraying both herbicides and pesticides. The new electrostatic nozzle concept was developed and specially designed for small-scale farms with a particular focus on Indian rural and agricultural growing economies. With this tool, spraying becomes much more effective, especially for herbicide application. The tool is completely air driven and uses no gas.
Before, the conventional nozzles used pressurized gases to create spraying, which created a lot of static electricity because of air resistance. In addition, these conventional nozzles are not very convenient to use because you have to keep going back and forth and are prone to lose some spraying hours because of the need to dust off the sensor or adjust the spraying angle. This makes the job of spraying difficult, time consuming and tiresome. On the other hand, electrostatic sensitive nozzles eliminate these problems, as the tool operates on a static charge, which eliminates static and electrical charges, which make spraying easier.
A typical electrostatic system generates a series of electrostatic discharges that are produced within the spray gun barrel, and it uses a discharge stream of charged particles to discharge contaminants and unwanted particles from the spray gun. There are many different kinds of electrostatic discharges, which vary according to the application. These discharge types can be: physical discharge, electrostatic release, electronic discharge and waterborne pesticides. Let’s take a look at each of these discharges.
Physical Electrostatic NDT: This type of electrostatic discharge is characterized by the generation of a very strong electrostatic charge, which is composed of electrically charged atoms and molecules. This type produces atomized spray that has fine particles. As the electrostatic charge remains intact, the discharge is non-covalent. The particles remain in the spray, which is collected and disposed off after each use.
Electronic Discharge: An electronic discharge nozzle uses an electrode material charging in a manner similar to an electrostatic nozzle, but the electrode material is charged electrically, rather than chemically. This produces an electrostatic spray that is highly ionized. The fine particles produced in this discharge stream are also not electrically charged. When electrostatic discharges a liquid, the charge is retained in the liquid until the liquid is released. The discharge stream is characterized by thick columns of fine dust, which are released along with the spray.
Waterborne Air Pollutants: Airborne pollutants can also be discharged through the electrostatic nozzle assembly. These pollutants may include small particulates, organic aerosols, and dyes. The air flow through the nozzle assembly is increased when the air passes through a small hole, located in the top of the assembly near the discharge point. The air and the dust are charged with an electric potential that is equal to or greater than the potential of the charged particles in the liquid. This charged discharge occurs in a manner similar to that of the electrostatic nozzle assembly.
Water-Assisted Electrostatic Nurturing: A water-assisted electrostatic charging system can also be used to prevent electrostatic discharges in certain systems. The water-assisted discharge consists of two separate chambers separated by a plastic air-filled chamber. When the first chamber is activated, the air-filled chamber fills with a liquid that contains a charge; this liquid is the potential charge of the liquids contained in the second chamber. As the first chamber fills, the potential charge in the second chamber is released, thus depleting the charge in the first chamber.
Electrostatic Hydrogen: A third type of electrostatic discharge occurs when the outer surface of a charged conductor is negatively charged and the inner surface of a non-charged conductor is positively charged. A third type of nozzle includes a metal electrode formed into a flat plate, with the flat plate extending outwardly. A current passing through the metal electrode imparts a negative charge to the outer surface of the metal and an opposite charge to the inside surface of the non-metallic rod. The electrical energy carried by the current is deposited on the ribbon. The ribbon is formed into a thin film, which is highly conductive of metal.