Apparatus and method for filling valve bag.

摘要

An apparatus and method for use in filling a valve bag (50) eliminates sifting of product during the filling process. A filling nozzle (10) is inserted into the valve of a bag (50) to be filled. A flow of particulate material is provided through the filling nozzle (10) and into the bag. When the bag is full, the flow of particulate material is terminated. A blast of high pressure air is then introduced into the nozzel (10) in order to clear the nozzle of any residual particulate material therein. A low pressure blast of air is introduced between the nozzle and the filling valve to suspend any particles present in the filling valve after the nozzle has been cleared by the high pressure blast. A vacuum is introduced into the nozzle to suck any suspended particles out of the filling valve after the low pressure blast has been introduced. A boot (14) can be inflated around the nozzle (10) to seal the nozzle (10) within the bag valve before filling the bag (50).