Friend has lent me a used Freddy Vacuum Cleaner. Need help with something!

[kdv1988]

Hello, I have borrowed a Freddy Vacuum Cleaning System from a friend since I wanted to use it on my CNC. We used it for removing the floating hydraulic oil from the coolant surface but it also sucks a lot of good coolant.

We then started looking for Freddy videos and found this -

https://youtube.com/shorts/8G8mnuHnn2g?feature=share

Why have they used what looks like a Compressor Air Muffler in the joint section?

We built a simple U shaped pickup and fixed it to the tank to ensure it only collects oil from the surface, and connected it to the Freddy's vacuum suction hose with a simple tee and plugged the third port of the tee [Like this -

]. It works fine but I would like to understand why a Muffler would be used in this

Any help would be great. Thanks.

 

[3DDave]

Have you e-mailed Freddy Products with this question?

 

[kdv1988]

No i haven't because I didn't think it was appropriate since I haven't bought the product from them.

 

[LittleInch]

Well until you actually know what that strange T shaped part is you can't start to guess.

Some sort of vacuum control valve?

Remember - More details = better answers
Also: If you get a response it's polite to respond to it.

 

[3DDave]

It may be a surprise but often the maker of a commercial device will want to spread goodwill about the company. This way, in the future, you would think favorably of them when you buy a new one or to contact them for parts that appear to be missing.

Often the technical support group likes a break and to here from people actually using the product.

The worst case is they ask you to take on a support agreement.

 

[Jboggs]

Its probably a vacuum relief valve, to control the vacuum level in the system.

 

[Compositepro]

Most "vacuum cleaners" require a minimum airflow through the system to cool the motor. The muffler allows airflow into the system even when sucking liquid but not so much air that you lose suction. Sort of like a wet/dry vacuum.

 

[LittleInch]

Good point - Kdv - has your borrowed machine stopped working yet?

Remember - More details = better answers
Also: If you get a response it's polite to respond to it.

 

[kdv1988]

@LittleInch not yet haha. Although I haven't used it everyday since I got it.

@CompositePro Understood. We are now thinking of making a machine that uses a compressed air driven venturi to generate the vacuum. Will this still be required? We have a venturi we used for another purpose available with us. Can just quickly fabricate a tank and fit it and give it a whirl in a day or two.

@Jboggs need to check this since some other experts on here have suggested that muffler is to introduce air into the system. And not the other way round.

@3DDave thinking I will buy a muffler and run a quick trial in-house before I get around to asking Freddy Products. Thanks

@LittleInch I've figured out what the T shaped part is. It's just a tee to connect the two pipes and to introduce air into the system. Maybe it cuts the viscosity of the fluid making if easier to transport (less load on the vacuum)

 

[LittleInch]

I suspect that you need to think about how much air needs to go through the system to keep the vacuum system in good operation and sufficiently cool.

An eductor looks like a better option alright.

Remember - More details = better answers
Also: If you get a response it's polite to respond to it.