How is static electricity generated in industrial production?
The principle of static electricity is the static electricity generated by different substances coming into contact, separating, or rubbing against each other. For example, static electricity may be generated during a series of activities such as machine movement, transportation, and the walking, sitting, and standing of workers in the production process.
Of course, static electricity in the production process can be divided into two aspects. One is human body static electricity, which is generated by the rotation of machines. We can start with human anti-static equipment, such as anti-static clothing and shoes, which can effectively handle human body static electricity. However, we will focus on introducing the static electricity generated by machines in production.
A machine is a high static power source because its mechanical components, especially the engine, are prone to electromagnetic induction. Therefore, it is necessary to handle the static electricity of the machine well. For the static electricity protection of the machine, it is generally achieved through the elimination of electromagnetic fields, shielding of high static parts, machine grounding, etc. Generally, demagnetization is achieved by using demagnetizers, and charge elimination is achieved by using ion fans. Ionic fans can generate abundant positive and negative ions, blowing them towards high static objects, so the static electricity of the objects will be neutralized. These ions are generated by the ion generating components inside the ion fan, which ionize the air.
This ion generating element is excited by a low current, high voltage transformer to ionize the air. And the transformer also contains a current limiting resistor, which can enhance the stability and safety of ionization. The high-voltage alternating current acting on the circular circuit of the stainless steel ion emission point creates a strong alternating electric field at the top of the emission point, which ionizes the air and produces polarized ions. When the electromagnetic field cannot be eliminated or is difficult to eliminate, we use electrostatic shielding devices to shield high static equipment or high static parts of the equipment, such as motors. As we all know, motors are prone to EMI, but machines cannot operate without motors, so it is necessary to shield them.
In addition, the best way to eliminate static electricity in machines can also start from the overall production environment, such as anti-static flooring and floor mats. Whenever production tools are involved, anti-static products should be used as much as possible, so that static electricity can be eliminated and self discharged.