The LCMG-C pulse jet dust collectors adopt a compartmentalized design with a central intermediate duct inlet. Dust-laden flue gas enters each compartment's hopper through the central inlet and wedge-shaped air distribution duct. Within the hopper and before entering the filter chamber, coarser particles are separated by baffle deflection and inertial gravitational settling and fall directly into the hopper. Finer particles are carried upward into the filter bags, where they are retained on the outer surface. The cleaned gas passes through the interior of the filter bags into the clean air plenum, then through the offline isolation valve (multi-leaf butterfly valve or disc lift valve) into the outlet duct, and is discharged to the atmosphere via the outlet, fan, and exhaust stack. Dust accumulated in the hoppers is conveyed to the kiln dust storage facility via rotary discharge valves and FU chain conveyors.

As filtration progresses, dust accumulation on the outer surface of the filter bags causes a gradual rise in system resistance. When resistance reaches the preset threshold, the PLC issues a cleaning signal, first closing the poppet valve of the designated module to isolate that compartment, then triggering the solenoid pulse valve to release compressed air in a 0.1–0.2 s burst through the blow pipes and nozzles into the filter bags. The induced effect of the high-velocity jet entrains a large volume of clean air from the clean air plenum into the bags, causing sequential top-to-bottom expansion until the bags reach their elastic limit, whereupon the restoring tension generates a reverse acceleration, producing high-frequency oscillatory deformation that dislodges the accumulated dust cake. After a defined settling period, the poppet valve reopens and the compartment returns to filtration duty, while the next module enters its cleaning cycle. This sequential cleaning → standby → filtration cycle repeats continuously, maintaining system resistance within a defined range for sustained long-term operation.

The PLC-based cleaning control system supports manual and automatic modes. Automatic control is divided into time-based, differential pressure, and hybrid time-differential pressure modes. Time-based mode configures parameters such as pulse interval and cycle interval; differential pressure mode uses total system ΔP as the trigger condition. Typical parameters: pulse width 0.1–0.15 s, pulse interval 10–20 s, cycle interval 30–90 min. Compressed air pressure is determined by pulse valve specifications and jet parameters, generally 0.25–0.35 MPa.