Weighfeeder System
Milltronics weighfeeders from Siemens can improve the accuracy of processing, blend consistencies, accountability, and record keeping. All weighfeeders come standard with a belt weigh bridge and speed sensor. An integrator is required to complete the system.
The weighfeeder is used to deliver an accurate mass flow rate of material. In the majority of applications, material is profiled by an adjustable mechanical shear gate, which fixes the correct material bed depth for a given particle size.
The feed rate is then maintained and adjusted by varying the speed of the belt. However, in some cases the belt speed is constant with rate control (if any) done by a pre-feeding device.
The system consists of three components: weight and speed
sensing, integration and control, and the mechanical conveying
system.
Using the belt load and the belt speed signals, small incremental
totals of weight per time are measured by the integrator and then
the flow rate is calculated. The measured flowrate is compared
against the desired flowrate and the on-board PID controller
makes necessary corrections to the belt speed.
Print
Bookmark
Recommend
