Structure and Component Functions of Gravimetric Feeders

Gravimetric feeders are essential for precise material handling in industrial production, combining continuous conveyance with real-time measurement and control.

Core Components

Gravimetric feeders consist of mechanical and electrical systems:

1.Mechanical Components

·Drive/Idler Rollers: The drive roller (powered by a gear motor) moves the conveyor belt; the idler roller adjusts belt tension and alignment.

·Weighing Frame: Supports load cells to measure material weight on the belt.

·Cross Spring Pivot: Acts as the fulcrum between the frame and weighing structure.

·Tensioning Device: Maintains consistent belt tension to minimize weighing errors.

·Feed Hopper: Adjusts material layer thickness via gate opening.

·Cleaning System: Removes adhered material from both belt surfaces.

·Sealed Enclosure: Protects internal components from dust and interference.

2.Electrical Components

·Load Cells: Convert material weight into electrical signals for the controller.

·Speed Sensor: Measures belt velocity to calculate instantaneous flow rate.

·Controller: Integrates weight and speed data, adjusts motor speed via inverter for precise feed control.

·Communication Interface: Links the controller to plant DCS/PLC systems.

Key Functional Synergy

Precision relies on seamless integration of mechanical and electrical systems:

·Mechanical Stability: Components like rollers, tensioners, and cleaning systems ensure consistent belt operation.

·Electrical Accuracy: Sensors and controllers enable real-time feedback loops for dynamic adjustments.

Understanding these components enhances maintenance efficiency and troubleshooting, ensuring uninterrupted production and optimal performance.