Working principle of pulse dust cleaning PLC control cabinet

Working principle of pulse dust cleaning PLC control cabinet

The working principle of the pulse dust cleaning PLC control cabinet: the flue gas enters from the inlet of the bag filter, the gap on the surface of the bag gradually decreases with the increase of solid particles, and the resistance of the smoke through the bag naturally increases gradually. When the outlet differential pressure increases to a certain level (set by the user), it is necessary to activate the off-line valve that controls the flue gas entering the bag, start the pulse valve on the top of the bag, and spray compressed air to the inner surface of the bag in a pulsed manner to make it adhere. The particles on the surface of the bag fall to the bottom of the bag and enter the ash hopper. To determine the resistance: the PLC in the PLC control cabinet only needs to monitor the differential pressure at the inlet and outlet to the differential pressure value specified by the user, and activate the offline valve in accordance with the set order , Pulse interval, pulse width start the pulse valve for cleaning. After the cleaning is completed, it will automatically continue to detect the differential pressure of the inlet and outlet, so the cycle. To time: The user does not consider the differential pressure of the inlet and outlet, specify a fixed time interval. , Automatically start the next timing cycle, and so on.