Insulated Electrostatic Spraying Extender for Leakage Reduction
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Solution Overview
Problem
Existing electrostatic spraying systems face inefficiencies due to wetting of the induction electrode and power supply cable, leading to short circuits and reduced operational lifespan, as charged droplets are attracted to these components, causing electrical leakage and requiring frequent maintenance.
Innovation Solution
An insulated electrostatically assisted spraying extender with a hydrophobic housing and internal insulated rod, equipped with a high voltage electronic module and encapsulated device, which reduces wetting and electrical leakage by creating an electrostatic field that charges droplets without attracting them to the induction electrode or power supply cable, using a spring-supported induction electrode to maintain distance and prevent wetting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If an induction electrode is positioned close to the hydraulic nozzle to create a strong electrostatic field, then electrostatic charging efficiency is improved, but wetting of the induction electrode occurs causing short circuits and reduced reliability
Solution Approach 1:
An insulated extender acts as an intermediary component between the induction electrode and the spray solution. The extender with insulating properties prevents direct contact between the induction electrode and the conductive spray solution, thereby eliminating the wetting problem while allowing the electrode to maintain its position for effective electrostatic charging
Solution Approach 2:
The harmful function of the induction electrode (attracting charged droplets) is separated from the electrode itself by introducing an insulated extender. The extender extracts or removes the harmful wetting effect from the induction electrode, allowing the electrode to perform its charging function without suffering from the harmful attraction of droplets to its surface
2Power
If the induction electrode is positioned close to the spray solution, then electrostatic field strength is improved, but electrical leakage through the power supply cable increases
Solution Approach 1:
The insulated extender serves as a mediator that protects the power supply cable from electrical leakage. By positioning the cable within the insulated extender, it prevents the cable from contacting the conductive spray solution, thereby eliminating energy loss through leakage while allowing the electrode to generate strong electrostatic fields
3Productivity
If traditional electrostatic spraying is used, then spray coverage is improved, but maintenance frequency increases due to wetting and short circuits
Solution Approach 1:
The insulated extender extracts or removes the wetting problem from the induction electrode area, preventing short circuits and electrical leakage. This eliminates the need for frequent maintenance cleaning of the electrode and cable, allowing continuous operation while maintaining high spray application efficiency
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution effectively prevents wetting and electrical leakage, enhancing the operational efficiency and reducing maintenance needs, allowing continuous operation without the need for frequent cleaning, while maintaining high electrostatic charging efficiency.
Implementation Method 1
The atomized drops pass through an electrode, where electrons are induced over the liquid flow, drops of high electrostatic charge being taken by an air flow
Implementation Method 2
This principle is based on Coulomb's law, which claims that opposites attract, or, more specifically, different electrical spraying charges attract one another. Electrically charged drops result in a force of attraction that is 75 times higher than the force of gravity.
Implementation Method 3
a housing made of hydrophobic material, with a surface preferably provided with fins
Implementation Method 4
a spring (14) is arranged, on whose free ends is attached support (15) of the ring induction electrode (151)
Data Source
Figure 1
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Figure 3
AI summary
An insulated electrostatically-assisted spraying extender is described, which is installed in the spray bar of sprayer equipment and positioned adjacent to a hydraulic nozzle (20), which atomizes the spray liquor, said extender (10) being provided with an insulated internal rod (12), with a jacket (111), both the internal rod and the jacket having fins, for the power cable (30) to pass through and for positioning the encapsulated electrical device (13), which supplies the induction electrode (151) with high voltage, said induction electrode surrounding the spout (21) of the hydraulic nozzle (20), resulting in dielectric breakdown and the induction of positive or negative charge in the atomized droplets, eliminating or decreasing the loss of electrical current between the induction electrode (151) and earth in the spray bar (100), as well as making it difficult for electrical current to be lost through the cable (30).