Cleaning apparatus for the operation of filter equipment

Claim 1

A filter cleaning means comprising a filter housing adapted to be connected to a dryer having filter bags therein, which filter dust from solvent laden vapors passing through said filter bags, said filter housing including means for passing dust laden solvent vapors through the filter bags in a forward flow direction, means connected to said housing for blowing vapor through said filter bags in reverse flow relation to the flow of solvent laden vapor from said dryer and through said bags, sliding means dividing said filter bags from each other and to permit the bags to be separately blown in said reverse flow, a heating coil means, in heat exchange relation with said filter housing, an exhaust line from said filter housing, a condenser connected to said exhaust line including a cooling coil to condense solvent vapors, an evaporator, valve means connected to said condenser and said evaporator said condenser being mounteD above said evaporator so that the condensate is discharged barometrically against the vacuum through said valve means and means connected to said evaporator and to said means for blowing vapor for controlling the flow of superheated solvent to blow against a selected filter bag in the reverse flow direction and thereby clean the filter.