The invention relates to the technical field of cloth bag dust removal equipment, in particular to a skeleton structure of a dust removal cloth bag for
environmental protection engineering, which comprises a top frame, a fixed rod, a bottom frame, a movable rod, a convenient
assembly part, a pressing ring, a locking part, a sealing plate, an abutting rod, an adjusting ring, an adjusting part and an unlocking part. The movable rod is arranged to be matched with the convenient-to-
mount component, so that the framework is kept in a contraction state during mounting, and a cloth bag is prevented from being scratched. After the cloth bag is in place, the pressing ring is pressed, the movable rod can be automatically locked and unfolded to support the cloth bag, and the sealing plate is pushed to press the opening of the cloth bag. During normal work, the movable rod is driven by negative pressure of the cloth bag to move inwards, the sealing plate is further pressed through the adjusting component, and sealing is enhanced. When
airflow is abnormal due to breakage of the cloth bag, increased
airflow pushes the sealing plate, locking is automatically relieved through the unlocking component, the lower pressing ring bounces and resets, and the sealing plate seals the center hole, so that unfiltered gas is prevented from being discharged, visual breakage position indication is provided for maintenance personnel, and the maintenance efficiency is improved.