BAG FILTER FOR THREE-STAGE AIR CLEANING OF IMPURITIES Russian patent published in 2012 - IPC B01D46/02 

FIELD: process engineering.

SUBSTANCE: invention relates to bag filter intended for aspiration air. Filter comprises case with horizontal baffle with perforated sections. Besides, it comprises dust-chamber with front and rear face walls and two vertical skeleton filtration bags with their top open end secured to horizontal baffle perforated sections. It includes impure air feed pipeline, impure air intake chamber, and cleaned air chamber. There is extra air cleaning module arranged under cleaned air chamber to comprise horizontal panel of air pocket mesh filters (PMF) with inner frames. There is also a impure purge air discharge manifold and filtration bag recovery mechanism. Additionally, it includes PMF panel recovery mechanism with section-be-section air washing in suction mode. Besides, it incorporates filtration bag recover control mechanism and PMF panel recovery control mechanism. Besides, cleaned air manifold accommodates two manifolds to discharge cleaned air in additional cleaning module. Outlets of said manifolds accommodate two air distribution devices with one inlet and two distribution T-bends communicated via air ducts with additional dust-chambers. Additionally, PMF panel recovery control mechanism incorporates dust collection cycle limiting timer. Blow-off fan, controlled air gates and aforesaid timer allow automatic section-be-section recovery of PMF in continuous all-day-round air cleaning. Note here that blow-off fan pressure branch pipe is communicated via pipeline with opening in filter case face. Note also that additional dust-chamber top and bottom controlled air gates are turned through 90 degrees relative to each other while their electric drives are interlocked by one control signal.

EFFECT: decreased sizes, power savings.

4 cl, 13 dwg, 2 tbl