DUST REMOVING UNIT WITH BACK PULSE BLOWDOWN OF FABRIC BAG Russian patent published in 2009 - IPC B01D46/02 

FIELD: treatment facilities.

SUBSTANCE: invention is designed for gas purification. The device comprises one or more casings, a separator mounted inside the casing and dividing it into two parts with the upper part being used as a gas collecting unit, a filtering fabric bag for dust collection set inside the casing, an inlet for the unclean gas, an outlet for the purified gas, first and second levels of the fabric bag back pulse blowdown system comprising back blowdown fittings and back blowdown offtake pipes. The length of the filtering fabric bag amounts to 8 m at least. A hole end of the back blowdown offtake pipe of the second level is fitted into the dust-collecting filtering fabric bag for the depth of ½ of the filtering fabric bag length. The back blowdown offtake pipe of the second level is concentric in relation to the back blowdown offtake pipe of the first level and consists of several sections connected to each other by hinged threaded joints.

EFFECT: improving dust removal efficiency due to increasing total filtration square and increasing the performance factor of a separate device casing due to its ergonomic design.

2 cl, 5 dwg