B - Operations – Transporting – 65 – B
Patent
B - Operations, Transporting
65
B
226/64.3
B65B 39/00 (2006.01) B65B 1/18 (2006.01)
Patent
CA 1203214
ABSTRACT OF THE DISCLOSURE A control system for use in a valve bay filling apparatus eliminates sifting of product during the filling process. A filling nozzle is inserted into the valve of a bag to be filled. A flow of particulate material a 1 i s provided through the filling nozzle 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 nozzle 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 An inflatable boot 14 can be provided on the nozzle to seal the nozzle within the valve of the bag during filling. control of the system is effected by electro-pneumatic components. -20-
437708
Kelley Roy N.
Lepisto J. George
Champion International Corporation
Ogilvy Renault Llp/s.e.n.c.r.l.,s.r.l.
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