Vibrating Feeder with Soundproof Cover-Acoustic cover

With a Soundproof Enclosure, How Low Can the Noise Level of a Titreşimli Kase Besleyici Be Reduced?

The noise reduction achieved by adding a soundproof enclosure (acoustic cover) to a vibratory bowl feeder depends on several factors, but general estimates are as follows:

I. Typical Noise Levels

Not: A reduction of 10 dBA is perceived by the human ear as approximately half as loud.

II. Factors Affecting Noise Reduction

1. Enclosure design – Thicker acoustic foam, sealed seams, and double‑wall construction improve performance.

2. Material of enclosure – Steel with internal sound‑absorbing lining works better than thin plastic.

3. Part characteristics – Small, hard parts (e.g., screws, metal clips) are louder than soft, large parts.

4. Bowl size and vibration amplitude – Larger bowls and higher amplitudes generate more noise.

5. Ventilation openings – Openings for cooling or part flow reduce noise reduction efficiency.

6. Floor/installation surface – Hard surfaces reflect noise; soft mounts or rubber feet help.

III. Practical Expectations

IV. Measuring Conditions

To get a meaningful noise level reading, measurements should be taken:

• Şu anda 1 meter distance from the bowl (operator position)

• With the bowl running at normal operating speed and part load

• With the enclosure fully closed (no gaps)

• In a typical factory environment (not an anechoic chamber)

V. Example from Industry

A common specification from vibratory bowl manufacturers with standard soundproof enclosures:

“With enclosure, noise level ≤75 dBA at 1 meter for typical part sizes.”

For very loud applications (e.g., feeding heavy steel parts), the noise may still be 75–80 dBA even with an enclosure. In such cases, additional measures (damped bowl, rubber‑coated track, lower amplitude) may be needed.

Summary Table