초록 ▼

A loss-in-weight gravimetric feeding system is disclosed which includes a prefeeder for receiving and discharging material and at least first and second feeders for receiving material from the prefeeder and discharging the received material to a common collector. The system includes a device for alt

A loss-in-weight gravimetric feeding system is disclosed which includes a prefeeder for receiving and discharging material and at least first and second feeders for receiving material from the prefeeder and discharging the received material to a common collector. The system includes a device for alternately diverting material discharged from the prefeeder to the first and second feeders, circuits for generating a first and second weight signal representative of the weight of material in the first and second feeders respectively, and structure for generating a reference signal representative of a desired mass flow rate of material from a feeder. The system further includes a circuit for alternately comparing the reference signal to the first and second weight signals in synchronism with the diverting device for controlling each of the feeders based on the comparison between the reference signal and the weight signal associated with the feeder.

대표청구항 ▼

A loss-in-weight feeding system comprising: a plurality of means for receiving material and discharging said material at a controlled rate; means for providing a representation of a predetermined discharge rate; means for selectively and successively providing a representation of the weight of mater

A loss-in-weight feeding system comprising: a plurality of means for receiving material and discharging said material at a controlled rate; means for providing a representation of a predetermined discharge rate; means for selectively and successively providing a representation of the weight of material in each of said plurality of means; means for successively comparing said representation of a predetermined discharge rate with a representation of the weight of material in each of said plurality of means for controlling each of said plurality of means to successively discharge materials from each of said plurality of means at a discharge rate equal to said predetermined discharge rate; means for successively feeding material at a controlled rate to each of said plurality of means when it is not discharging; and wherein said means for feeding is responsive to said representation of a predetermined discharge rate and feeds said material at a controlled rate substantially equal to said predetermined discharge rate.