High-Precision Feeder for Powder and Bulk Material Dosing
A screw feeder, a hopper weighing unit and a control unit working as one loop. The controller reads material weight and screw speed in real time, compares them with the recipe requirement and regulates motor speed to hold the dosing rate - which is how micro-proportion dosing stays accurate while the material is moving.
Application
Primarily designed for the food and pharmaceutical industries handling bulk or powdered materials. It suits production and conveying processes that need precise control over feed rate, mixing ratio and cumulative total while the material is in dynamic motion.
Who It Is For
- Food plants dosing additives, sugar, salt or flour into a mixing stage
- Pharmaceutical manufacturers where a batch record depends on the dosed quantity
- Feed producers proportioning several raw materials into one formula
- Chemical processors metering powders ahead of a reactor step
What Goes Wrong Without It
Volumetric feeders drift as bulk density changes with humidity, compaction and batch, so the recipe is right on paper and wrong in the mixer
Micro-dosing of minor ingredients is where recipes fail, and it is exactly where a coarse feeder has no resolution
Powder contact surfaces with crevices and internal bearings are impossible to clean to a hygiene standard
Feeders that cannot report to the host system leave the batch record incomplete
Key Benefits and Product Features
High-precision feeding across a wide capacity range
Delivers accurate feeding over a broad range - for example a maximum throughput of 3.6 tons per hour for powders with a bulk density of 0.6.
Hygienic and robust construction
Simple structure made entirely of 304 stainless steel with seamless laser welding for safety, hygiene and straightforward maintenance.
Modular design
Flexible, simple and convenient installation, so the feeder can be dropped into an existing line layout.
Four operating modes
Continuous Flow Monitoring, Continuous Flow Quantitative Control, Micro-Weighing Quantitative Control and Batch Cumulative Quantitative Control.
Advanced connectivity
Digital communication interfaces and command sets for integration with host systems such as SCADA and PLC, giving remote control and real-time data transmission.
Flexible control options
Remote Control, Local Economic and Local Touchscreen versions to suit varying budget, production and system requirements.
How the Machine Is Built
The system comprises a hopper weighing unit of appropriate capacity, a screw feeder and an automatic control unit. The control unit processes real-time signals for material load weight and feeder rotation speed, calculates the required material supply rate from the preset process requirement and precisely regulates motor speed to achieve accurate micro-proportion dosing.
Technical Data
Values marked TBC are confirmed against your duty at quotation. We do not publish figures we cannot stand behind.
| Maximum throughput | 3.6 t/h for powder with bulk density 0.6 |
|---|---|
| Material of construction | 304 stainless steel throughout |
| Welding | Seamless laser welding |
| Feeding element | Screw feeder |
| Weighing element | Hopper weighing unit, capacity matched to duty |
| Operating modes | Continuous flow monitoring; continuous flow quantitative control; micro-weighing quantitative control; batch cumulative quantitative control |
| Control versions | Remote Control / Local Economic / Local Touchscreen |
| Host interface | Digital communication interface with command set for SCADA or PLC |
| Target industries | Food, pharmaceutical, feed, chemical |
| Hopper capacity, motor rating, dimensions | TBC - quoted against the duty |
How It Compares
Versus a volumetric screw feeder
A volumetric feeder meters by screw revolutions and assumes constant bulk density. This unit weighs the material as it leaves, so a change in density corrects itself inside the control loop.
Versus a belt weigh feeder
A belt weigher suits coarse, free-flowing material at higher tonnage. For powders, micro-dosing and hygiene-critical duty, an enclosed screw and weighed hopper is the better fit.
Versus the JHDM hopper weigher
The hopper weigher totalises discrete batches for metering and trade settlement. The feeder controls the rate at which material is delivered continuously into a process.
Specifying and Installing It
Give us the material, its bulk density and its flow behaviour - bulk density drives the throughput figure directly.
Confirm the required dosing mode: continuous rate control, micro-weighing or batch cumulative totalising.
Choose the control version. Remote Control suits a line run from a central room, Local Touchscreen suits stand-alone operation, Local Economic covers budget-constrained duty.
Confirm the host protocol so the digital interface is configured before dispatch.
Install on a rigid, level support. The weighing unit reads small differences, so structural vibration and pipe strain must be isolated.
Customisation: material of construction, weighing capacity, control tier and host protocol are all specified against your process. Tell us what the line already runs and we build to it.
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FAQ About the High-Precision Feeder
What throughput can the feeder achieve?
Up to 3.6 tons per hour for powders with a bulk density of 0.6. Throughput scales with bulk density, so the figure for your material will differ - send the material data and we will confirm.
What is the feeder made from?
Entirely 304 stainless steel with seamless laser welding, which is what makes it suitable for food and pharmaceutical duty and straightforward to clean.
Can it dose several ingredients in a fixed ratio?
Yes. The unit is designed for processes requiring precise control over feed rate, mixing ratio and cumulative material totals, and micro-weighing quantitative control mode exists for minor ingredients.
Can we run it from our existing SCADA?
Yes. Digital communication interfaces and command sets are provided for integration with host systems, covering remote control and real-time data transmission.
Do you supply a touchscreen if we do not have a control room?
Yes, the Local Touchscreen version is built for that case. Local Economic is available where the budget is tighter and the control requirement is simpler.
Request a Quotation for the High-Precision Feeder
Send the material, bulk density, throughput and accuracy target. Our engineers reply with the specification and price within 24 hours.