What is the principle of anti-static equipment
The static eliminator can also be called static elimination equipment, and its principle is as follows. It is composed of a high-voltage power generator and a discharge electrode (usually made of ion needles). The air is ionized into a large number of positive and negative ions through high-voltage corona discharge, and then a large number of positive and negative ions are blown to the surface of the object to neutralize static electricity, or Directly put the static eliminator close to the surface of the object to neutralize static electricity.
The static eliminator is mainly divided into the following types of AC corona products. The AC high voltage generator raises the 220V input voltage to above 4KV. The discharge electrode alternates with a positive voltage and a negative voltage at a frequency of 50Hz. A strong electric field is generated between the discharge electrode and the ground electrode. Air The molecules are ionized, and the tip of the discharge electrode alternately produces positive and negative ions. When the surface of the charged object is at a positive potential, the negative ions will neutralize it. On the contrary, if the surface is at a negative potential, the positive ions will neutralize it. The AC corona product must be grounded to work normally, but Part of the positive and negative ions will be guided to the ground due to grounding, but the structure is simple and the positive and negative ions have a good balance.
The DC high voltage generator of the DC corona product increases the 220V input voltage and outputs the positive voltage and the negative voltage respectively. A strong electric field is generated between the positive and negative discharge electrodes, and the air molecules are ionized. The positive discharge electrode tip generates positive ions, and the negative discharge electrode tip generates Negative ions, positive and negative ions are generated at the same time to neutralize the static electricity on the surface of the object. When the surface of the charged object is at a positive potential, the negative ions will neutralize it. On the contrary, if the surface is at a negative potential, the positive ions will neutralize it. DC corona products can produce positive without grounding Negative ions, the positive and negative ions acting on the surface of the object are sufficient, and the speed of neutralization of static electricity is very fast. Pulsed DC corona products. Pulsed DC high-voltage generators increase the 220V input voltage and output positive and negative voltages in a cycle of 4-6 seconds. On the electrode, positive and negative ions are alternately generated. When the surface of the charged object is at a positive potential, the negative ions will neutralize it, on the contrary, if the surface is at a negative potential, the positive ions will neutralize. Because the switching cycle of the pulsed direct current positive and negative ions is more static than the power frequency alternating current The eliminator is 200-300 times longer, so there will be no self-neutralization of positive and negative ions, and at the same time, there is no need to ground and lose positive and negative ions, and the conversion cycle can be adjusted according to the distance of the object to be electrostatically removed. The distance is longer, the conversion cycle can be long, and the distance When it is closer, the time can be short. Pulsed DC static eliminator can reach a long distance for positive and negative ions without a fan.