To Remove The Noise Of A Machine

Take your pick.

Depends on what's causing the noise.

If the noise is from the de-shelling implement striking the nuts, then you just need a more sound (pun intended) outer housing that contains some noise dampening material.

If the noise is coming from that actual vibration of the machine... outer panels vibrating, or mechanical components operating. There are a couple different issues you have to be aware of.

Mechanical components, if properly sized, installed, and maintained, should not make excessive noise beyond what is easily mitigated via standard hearing protection. So check all your power transmission components to ensure proper install and maintenance.

If it is the housing itself there is a certain degree of vibration allowance that is included in a design so if you brace it too much to minimize noise-inducing vibration, you might break something. Machines need to disipate energy and if you stop it from going to Point A, it might break Point B.

If it is related to air exhaust... install mufflers.

Be careful though, any material you use as a dampener should be rated for use in food processing.

As a last resort, you can always build a dampening barrier wall around the entire unit with requirements for hearing protection prior to entry. This isolates this unit from the balance of your facility, reducing overall facility noise.

Just a final cautionary note... don't modify the machine without first contacting the machine builder. Besides, they may have some good ideas of their own to share with you.