The collecting rapping motor in an Electrostatic Precipitator (ESP) is used to generate mechanical vibrations which help to dislodge collected dust particles from the collecting plates or electrodes in the ESP.

The collecting rapping motor is equipped with hammers or paddles that strike the collecting plates or electrodes at regular interval. This mechanical action causes the dust particles to loosen and fall into the hopper or ash handling system below the ESP for subsequent disposal.

The use of collecting rapping motors is essential for maintaining the efficiency of ESP by preventing the accumulation of dust and ensuring continuous operation. By periodically removing the collected dust, the ESP can maintain its performance in terms of particulate removal efficiency and airflow capacity. Additionally, proper maintenance and adjustment of collecting rapping motors help optimize their effectiveness and prolong the service life of the ESP components.