BAG FILTER FOR CLEANING AIR FROM MECHANICAL IMPURITIES Russian patent published in 2001 - IPC

FIELD: cleaning gas and/or air in industrial rooms. SUBSTANCE: proposed filter includes at least one row of filtering modules; each module has dust separating chambers with tube sheets and sections of vertical filtering bags secured on them by their upper open ends; holes admitting contaminated air to bins are provided with guide baffles and holes discharging mechanical impurities from bins are provided with sluice unloaders arranged in adjacent rows of modules in staggered order; upper portion of bin is provided with shutters mounted in inclined position under each dust separating chamber; valve chests are mounted on tube sheets; hermetic servicing chamber is mounted on valve chest; centrifugal fan is mounted at front end of each row modules fitted with recirculating air duct with T-piece connected with delivery branch pipe of centrifugal fan; filter is provided with at least single-row panel of air cellular filters located in inlet hole of contraction mounted between contaminated and cleaned air manifolds over entire length of modules and additional manifold of varying section whose inlet hole is connected with outlet hole of cleaned air manifold; outlet of contraction is connected with suction branch pipe of centrifugal fan; scavenging air manifold is provided with additional centrifugal fan mounted on delivery recirculating air duct of main centrifugal fan and delivery branch pipe of additional fan is connected with inlet of scavenging air manifolds; bin consists of three parts; lower part is made in form of cylinder with flat bottom on whose inner surface cylindrical shell is mounted over its central axis forming circular chute together with inner surface of cylinder and its bottom; hole found in bottom of chute is used for discharging mechanical admixtures to sluice unloader; drive is mounted under bottom of cylinder; through hole for drive shaft is made in hole at its central axis; conical-cylindrical framework of unloading unit is fixed on drive shaft; lower cylindrical portion of this unit is located in circular chute at technological clearance on the outside of shell; at least two blades are radially secured on external surface of cylindrical part of unloading unit; length of each blade is lesser than or equal to difference of inner radius of cylinder and outer radius of cylindrical part of unloading unit. EFFECT: reduced operational outlays. 9 dwg, 4 tbl