×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!
  • Students Click Here

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Students Click Here

Reduce Noise Level from Grinder

Reduce Noise Level from Grinder

Reduce Noise Level from Grinder

(OP)
I am trying to reduce the noise level in the room where this grinder is. The grinder receives excess plastic from our process through a top opening where the plastic drops in and side via a conveyor. There is a vacuum tube attached to the bottom to suck the ground plastic up and out of the room. The noise level is irregular. Think of a crunching plus gear grinding sound. My idea was to build a partial enclosure with Lexan and pad the inner walls with sound absorbing material. Any ideas?

[img https://drive.google.com/file/d/0B1jAozrBAGWvdFZqb...]
[img https://drive.google.com/file/d/0B1jAozrBAGWvSWlKV...]

RE: Reduce Noise Level from Grinder

My work computer can't connect to https://drive.google.com/file/d/0B1jAozrBAGWvSWlKV...

I prefer to process noise for frequency input when dealing with sound and vibration issues.

Can you feel vibration on the grinder exterior panels? If so, they may be radiating a bunch of noise ( again, measuring the vibration frequency to compare to the A weighted noise frequencies makes a good road map).

How large is the room, Are the room walls hard, and is the grinder close to a wall or in a corner?

=======================

Pages 58,59 and 72-79 here -

https://www.bksv.com/media/doc/bn1299.pdf

RE: Reduce Noise Level from Grinder

High frequencies will be relatively easy to attenuate, on the other hand low frequencies will be much harder to attenuate.

RE: Reduce Noise Level from Grinder

Depending on the noise level, sometimes "noise control curtains" can be the most economical and easiest solution.

My advice, first have an assessment of the type and severity of noise, say if it is structure borne noise then you need to mitigate the vibration problem using proper isolation.

RE: Reduce Noise Level from Grinder

(OP)
Tmoose,

Yes I can feel the vibrations on the grinder hopper.
The room is 36' long, 12' wide, 12' high.
The walls are hard (smooth wipe-down)
The grinder is maybe 6' from a side wall and 8' from a back wall (estimating)

Reza Mech,

So far I'm leaning towards a polycarbonate enclosure framed with 80/20.
If that works well I might skip the interior baffling. We'll see.

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members! Already a Member? Login


Resources

White Paper - How ESI is Helping Move New Medical Device Product to Market Quicker & More Cost Effic
Early Supplier Involvement has long been a strategy employed by manufacturers to produce innovative products. Now, it almost seems like a necessity. Because decisions made in the design phase can positively affect product quality and costs, this can help add value to OEM bottom lines. This white paper will discuss many facets of ESI, including why it’s so valuable today, what challenges limit the benefits of ESI, how cost is impacted, and more. Download Now
White Paper - Moving to a Driverless Future
This white paper describes what we see as the best practices to support a sustainable engineering process for autonomous vehicle design. It exposes how to use simulation and testing in common frameworks to enable design exploration, verification and validation for the development of autonomous cars at a system, software and full-vehicle level to drive a mature product development process for automated driving. Download Now
Research Report - How Engineers are Using Remote Access
Remote access enables engineers to work from anywhere provided they have an internet connection. We surveyed our audience of engineers, designers and product managers to learn how they use remote access within their organizations. We wanted to know which industries have adopted remote access, which software they are using, and what features matter most. Download Now

Close Box

Join Eng-Tips® Today!

Join your peers on the Internet's largest technical engineering professional community.
It's easy to join and it's free.

Here's Why Members Love Eng-Tips Forums:

Register now while it's still free!

Already a member? Close this window and log in.

Join Us             Close