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US 8,067,704 B2Granted
System and method for weighing particulate material moving on a conveyor
AssigneeEquipfix
InventorsJames Edwin Lowe, Andrew James Lowe, Kevin Dalton Lowe
Life of this patent
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AssigneeEquipfix
InventorsJames Edwin Lowe, Andrew James Lowe, Kevin Dalton Lowe
Estimating the term…
A system and method for weighing varying throughput of conveyed particulate material. The system has a weighing unit for measuring weight of material conveyed on a span of the conveyor and a speed monitoring unit to monitor the speed of the conveyor. A control module is programmed to calculate the instant value of material conveyed per unit length of the conveyor. An output from the control module reduces conveyor speed in response to a reduction in measured weight of material conveyed and increases conveyor speed in response to an increase in measured weight of material conveyed. High accuracy of measurement of the weight of particulate material being conveyed even when the conveyor is lightly loaded.
A conveyor weigh scale system for weighing varying throughput of conveyed particulate material, the system having a weighing unit for measuring weight of material conveyed on the conveyor, a speed monitoring unit for measuring the speed of the conveyor, a motor to drive the conveyor, and a control module, the control module having a first input from the conveyor speed monitoring unit, a second input from the weighing unit, and an output to a motor control module to reduce conveyor speed in response to a reduction in measured weight of material conveyed and to increase conveyor speed in response to an increase in measured weight of material conveyed.
A method of weighing particulate material on a moving conveyor, the particulate material having varying throughput, the method comprising weighing the conveyed particulate material at a weighing zone over a span of the conveyor, reducing conveyor speed in response to a reduction in measured weight of material conveyed and increasing conveyor speed in response to an increase in measured weight of material conveyed.
Dependencies are inferred from the claim text.