について electromagnetic vibrating feeder is widely used in various industries, including mining, metallurgy, coal, building materials, light industry, electric power, machinery, and food. It functions to transport bulk, granular, and powdered materials from storage bins or hoppers to receiving devices in a uniform, continuous, or precise manner.
主な特徴
1. Intelligent Electrical Control
The feeder uses a half-wave rectification circuit, allowing for stepless adjustment of the feeding amount. This feature supports automatic control in production processes, promoting automation.
2. Simple Structural Design
The device contains no rotating parts and requires no lubrication. Its simple structure makes maintenance easy, reducing operational complexity.
3. Low Wear Operation
The materials move in a micro-throwing motion within the feeder, resulting in minimal wear on the trough. This design extends the equipment's lifespan.
4. High-Temperature and Corrosion Resistance
The trough is made of alloy steel plates, enabling it to handle materials that are high-temperature, highly abrasive, or corrosive.
Maintenance Points
1.Regular Inspections: Frequently check the amplitude of the trough and the coil current. Pay attention to any unusual noises. If you notice a sudden increase in noise or any impact sounds, analyze the cause immediately and stop the machine.
2.Maintain Balanced Air Gap: Keep the air gap between the core and the armature balanced. Regularly inspect bolts for looseness and ensure the gap is within normal limits. If the spring bolt is loose or the spring is broken, address these issues promptly.
3.Check the Lifting Device: Regularly inspect the lifting device for looseness. A loose lifting device can cause imbalance at the corners of the feeder, affecting the feeding quality. Tighten it immediately if necessary.
4.Clean the Sealing Cover: Ensure the sealing cover of the vibrator is intact to prevent dust from entering and clogging the gaps between the springs. Regularly clean any dust buildup on the sealing cover.
Common Fault Analysis
1. Machine Does Not Vibrate After Power On
- Cause: Blown fuse or shorted coil wires.
- Solution: Replace the fuse and check the resistance to repair any breaks.
2. Material Transport Direction Is Off
- Cause: The centerline of the trough and the line of excitation force are not in the same vertical plane.
- Solution: Adjust them to be in the same vertical plane.
3. Weak Vibration
- Cause: The thyristor is damaged or the air gap is blocked.
- Solution: Replace the thyristor and remove any blockages.
4. Loud and Irregular Noise
- Cause: Broken spring or loose connection bolts.
- Solution: Replace the spring and tighten the bolts.
5. Torsional Vibration Occurs
- Cause: The line of excitation force is not aligned with the center of the trough.
- Solution: Adjust the excitation force line to pass through the center of the trough.
6. Current Fluctuates
- Cause: Damaged coil or poor contact.
- Solution: Inspect the coil for shorts or loose connections in the control box.
7. Normal Operation with High Current
- Cause: The air gap may be too large.
- Solution: Adjust the air gap to about 2 mm.
8. Insufficient Feeding
- Cause: The trough's vibration does not meet the required amplitude.
- Solution: Check if the hopper load directly compresses the feeder trough. Adjust the air gap and ensure proper spring tension.
9. Rectifier Failure During Operation
- Cause: Short-circuited coil or leakage (grounding).
- Solution: Replace the thyristor and coil, and fix the leakage issue.
10. Excessive Vibration of the Foundation
- Cause: The stiffness of the isolation springs may be too high.
- Solution: Reduce the stiffness of the isolation springs.
結論
The electromagnetic vibrating feeder offers a simple structure, low noise, and lightweight design. It operates easily and consumes little power. It supports automation in production processes with stepless adjustment capabilities. The feeder can frequently start and operate continuously under rated voltage and amplitude conditions, making it widely applicable across various industries. Regular maintenance and inspections will effectively extend the equipment's lifespan and ensure efficient and stable production.
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