The working principle of electrostatic precipitator air purifier uses high-voltage DC electric field to ionize gas molecules in the air, producing a large number of electrons and ions, which move to the poles under the action of electric field force. In the process of movement, they encounter dust particles and bacteria in the airflow to make them charged, and the charged particles move to the plates with opposite charges under the action of electric field force. Under the action of electric field, free ions in the air will move to the two poles. The higher the voltage, the greater the electric field intensity and the faster the movement speed of ions.

The electrostatic precipitator makes the flue gas positively charged when it passes through the flue in front of the main structure of the electrostatic precipitator, and then the flue gas enters the channel of the electrostatic precipitator with multi-layer cathode plates.

The electrostatic precipitator consists of two parts: one part is the electrostatic precipitator body system; The other part is the power supply device and low-voltage automatic control system that provide high-voltage direct current. The high voltage power supply system supplies power to the booster transformer, and the dust collecting electrode of the vacuum cleaner is grounded. The low-voltage electric control system is used to control the temperature of electromagnetic rapping hammer, ash discharging electrode, ash conveying electrode and several components.

Extended data:

The process of collecting charged dust: on two metal anodes and cathodes with different radii of curvature, an electric field sufficient to ionize the gas is maintained by high-voltage direct current, and electrons, anions and cations generated after gas ionization are adsorbed on the dust passing through the electric field, so that the dust is charged.

Under the action of electric field force, dust with different polarities moves to electrodes with different polarities and is deposited on the electrodes, thus achieving the purpose of separating dust from gas.

Compared with other dust removal equipment, electrostatic precipitator has less energy consumption and high dust removal efficiency, which is suitable for removing 0.0 1-50μ m dust in flue gas, and can also be used in occasions with high flue gas temperature and pressure. Practice shows that the greater the amount of flue gas treated, the more economical the investment and operation cost of electrostatic precipitator.

When the air distribution is uneven, the dust collection rate is high in places with low wind speed and low in places with high wind speed. The increase of dust collection in places with low wind speed is less than that in places with high wind speed, and the total dust collection efficiency decreases. However, where the air velocity is high, there will be scouring phenomenon, so that the dust deposited on the dust collection plate will be raised again in large quantities.

Baidu encyclopedia-electrostatic precipitator

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