Vibrating Hopper Feeder – Precision Microfeeder for Powders and Granules

The vibrating trough feeder is available in several configurations to adapt to the specific needs of each industrial process.

Different possible configurations:

• Open or closed trough: allows the feeder to be adapted to clean or constrained environments.
• Multi-lane: possibility of distributing the product over several outlets to simultaneously supply several production zones (e.g., food sprinkling, multi-container filling).
• Dosing options: integration of a pre-dosing flap for applications requiring a first rapid filling step followed by a precision adjustment.

One of the key elements of the vibrating trough feeder is the product bed adjustment guillotine located at the trough inlet.

It allows adjusting the thickness of the powder flow to obtain a stable and reproducible output.

The system uses an electromagnetic vibrator (not a motor-vibrator), allowing fine control of the vibration intensity, thus ensuring extreme dosing precision, even for micro-quantities.

This technology allows dosing products with accuracies in the order of a gram while ensuring homogeneous distribution.

The vibrating trough feeder is designed for easy integration into an existing production line.

It can be coupled with other equipment to ensure a complete and automated process.

Compatibility with various systems:

• Weigh dosing: combination with scales to ensure precise dosing controlled in real-time.
• Container filling: drums, bags, jars, capsules, according to customer needs.
• Transfer systems: association with a vibrating conveyor, a transfer screw, or pneumatic transfer for continuous supply.

1. Continuous Dosing – Operating Principle

The vibrating trough feeder in continuous mode allows feeding a downstream process without interruption.

It is often used for continuous sprinkling or simply controlling a flow rate linked to the downstream process.

Operating Steps

Feeder Supply

The product is stored in a buffer hopper located above the feeder.

A level sensor continuously monitors the quantity of product in the hopper to prevent any supply interruption.

Flow Rate Adjustment

The operator adjusts the opening of the inlet guillotine to adjust the thickness of the product bed.

The electromagnetic vibrator is activated with adjustable frequency and amplitude to ensure a constant flow rate.

Product Sprinkling / Continuous Discharge

The product gradually moves along the trough under the effect of vibrations.

It is discharged directly onto the product by sprinkling.

Automatic Flow Regulation

The weighing load cell is integrated to regulate the flow rate precisely.

In case of excess or lack of product downstream, the feeder automatically adjusts its rate to ensure a continuous flow.

Continuous Supply

When the buffer hopper is almost empty, it is automatically refilled to avoid any interruption of the product flow.

During this period, the discharge always occurs at the same speed to ensure continuous dosing.

2. Direct Dose Dosing into the Final Container with Centering Cone – Operating Principle

This version is designed for precise and direct filling of containers (bags, jars, capsules, cups, etc.), with a centering cone to ensure uniform deposit.

Operating Steps

Container Positioning

An automatic conveying system places the container under the feeder outlet.

A presence sensor validates the correct positioning of the container before starting the dosing cycle.

Dose Adjustment

The program with its recipe module selects the quantity of product to be dosed via the control interface.

The system automatically adjusts the frequency and amplitude of vibrations to match the recipe.

Dosing Trigger

When the dose is called for, the feeder activates and doses the powder towards the outlet.

A centering cone guides the product to avoid losses and ensure homogeneous deposit.

Weighing and Fine Adjustment

An integrated weighing sensor stops the feeder as soon as the target mass is reached.

A slow finishing speed is applied to refine the dose accuracy.

Container Closing and Release

The container is automatically released to be sealed or moved to the next process step.

Optionally, a cleaning drawer comes out under the feeder to keep the filling area always clean.

3. Hidden Time Dosing with Pre-dosing Flap – Operating Principle

This operating mode optimizes dosing speed and precision by filling a pre-dosing flap while the container is being positioned.

Operating Steps

Flap Pre-filling

While the previous container is still in place, the feeder fills an intermediate flap.

This hidden time helps reduce the total cycle time.

Flap Opening and Rapid Filling

Once the container is positioned, the flap opens instantly to transfer the powder dose all at once.

This method reduces variations due to flow and ensures increased accuracy.

Final Dose Adjustment

A fine dosing phase can be applied after the main discharge to ensure maximum precision.

A weighing sensor controls the actual quantity and compensates if necessary.

Flap Refilling for the Next Dose

As soon as the flap closes, the feeder immediately resumes a pre-dosing cycle.

While the container is being evacuated, a new dose is ready for the next filling.

Ejection and Quality Control

A final vibration ensures that all the powder has been properly discharged.

The container is moved, and the process continues сексуаविश्लेषणात्मक.