LFEF type fiberglass bag filter; It is a new product specially designed for dust removal of cement shaft kiln and dryer exhaust gas. The fiberglass bag filter adopts microcomputer control, chamber back blowing, timed and fixed resistance dust cleaning, temperature detection display and other measures, which enables the fiberglass bag filter to operate stably in the dust removal of shaft kiln and dryer. The chimney outlet emission concentration is lower than the prescribed 150gm/m3 emission standard (actually not more than 50gm/m3), and the equipment can change bags in different chambers without stopping the machine. The operation is simple and the operating cost is low, making it a device to solve the dust removal of shaft kiln and dryer exhaust gas.

LFEF type fiberglass bag filter structure: The equipment consists of a dust containing gas inlet to a purified flue gas outlet, and the main structure is composed of an inlet pipeline, an inlet chamber, a bag chamber, an ash hopper, an ash discharge valve, an outlet pipeline, a reverse air blowing system, and an ash cleaning control system. The dust collector body is made of all steel structure and designed with anti thermal expansion mechanism measures. The outer shell is made of LBY type lightweight rock wool board double-layer insulation, and the outer surface is protected by #=0.5 galvanized sheet. It is installed using a new process of pulling rivets, and the flower board is formed by cold stamping, rolling and rolling, which increases strength and equipment quality. The dust collector uses fiberglass bags treated with RH formula, which have excellent bending resistance, strength, and thermal shock resistance.

Working principle and performance parameters of LFEF type fiberglass bag filter: Due to the characteristics of ash content, large air volume, wide pollution range, and high moisture content in the exhaust gas of shaft kilns and dryers. The dust removal of flue gas from dryers and shaft kilns has brought difficulties. Based on the characteristics of dryers and shaft kilns, an upward intake method is adopted, where dusty flue gas enters the intake chamber from the upper part. Some coarse particles fall into the ash hopper due to inertia, and during dust cleaning, the airflow direction is consistent with the direction of dust settling, preventing secondary dust flying. Moreover, because the intake chamber ensures uniform airflow distribution and no sudden changes in airflow velocity, the pressure drop in each bag chamber is balanced, which is beneficial for improving the service life of the filter bag. This type of fiberglass bag filter has its exhaust valve and blowback valve located at the exhaust pipe below. The dusty gas is sucked into the intake manifold by the exhaust fan; Enter the intake chamber through each intake manifold; Uniformly pass through the upper flower board; Then it flows into the filter bag, and a large amount of dust is trapped on the filter bag; Part of the dust directly passes through the lower flower board and falls into the ash hopper, while the airflow is purified through the filter bag. The purified airflow enters the induced draft fan through the exhaust valve and is discharged into the atmosphere.