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Please suggest components for a water spray/vacuum system for cooling and dust collection while grinding. Answered

The grinding is being done in a tight area. A long handled grinding disc (please see picture) is being used. Only the grinding disk rotates, not the long handle. 

It would be best if the water lines and vacuum lines could be attached along the handle, welded? cable ties?  The system needs to be portable but electricity will be available. The smaller the components, such as water reservoir, peristaltic pump, vacuum pump, vacuum holding tank, spray nozzle, tubing, the better.

The material to be ground is heat sensitive so the water spray is needed for cooling.The water pump needs to be a peristaltic type pump so that the fluid is only in contact with the tubing.  I will also need a way to connect the flexible tubing of the pump to a more rigid, perhaps metal fluid line along the handle..  Due to the small grinding surface, water flow does not need to be great, perhaps 20 ml per minute. 

The dust produced from grinding can obscure the view so a vacuum source is necessary. 

I welcome any suggestions on:  how the system could be designed, what components I would need,  where components could be purchased,  how to keep costs down, etc.  I greatly appreciate any guidance you can give me.


Sounds like a Vortex Tube might be ideal for your application.
A vortex tube uses compressed air to create cold air  streams for cooling
applications. The link goes into more detail as to how they work.

With a vortex tube you would not need messy water cooling.
You would then only need to vacuum up dry dust.

Zengineer 1618

Thank you.  I love it when someone tells me about a technology that I am totallaly unaware of.  I am always trying to figure out how to do things but am not knowledgeably about what tools and technology are available.  I am going to pursue this avenue.

Good question. You could clip a tube to the shaft fairly easily, but the vacuum part would be harder. Could you fit a regular vacuum-cleaner hose in the work area?


lemonie, Thank you for your reply.

The area is too small for a regular vacuum cleaner hose I would need to attach a connector to a smaller hose. 

I didn't think so, and you've explained why above. A greater water-flow and liquid suction might be best for you perhaps. Best wishes for it anyway.


Glue/welded  a plastic "T" fittin' into th' vac pickup ( back end) ran all lines up th' "T " and sealed around all th' tubin' and hoses after everything was installed with electricians weather putty,  then sealed th' vac hose to th' open end with duct tape !

We were grindin' inside th' fresh drinkin' water recycler in place on a nuclear sub !

This is a commercial query, right, rather than to support a DIY hobby project?

PM me if you'd like to pursue a consult. I'd be glad to offer my expertise, but I only do so without remuneration for  projects I attribute to non-comm purposes.


I appreciate your position on commercial verus hobby. 

I did not describe the exact application because I thought that it would be more confusing and require more explanation than would be helpful. 

It would simplify, and make safer a part of my work, if I could learn of a way to add cooling and vacuum to my my current equipment. 

I am a veterinarian who must grind horse's teeth (the heat sensitive material is the tooth pulp) which would be damaged if the grinder is left on the tooth more than 20 seconds with out cooling.  I am currently using a large syringe to cool the tooth, which requires stopping every 20 second and squirting water into the horses mouth.  I do not have any vacuum, so dust obscures my view and is probably harmful to inhale whether you are a horse or a person. Horses teeth extend back in their head about 10 inches from the corner of their lips, making the working space very tight

Horses teeth are hypsodontic, which means that they grow through out the horse's lifetime to replace the grinding surface lost to chewing hay and grass.  Many things can cause the horse's teeth to begin to wear unevenly resulting in loss of grinding surface which  will worsen over time, because the teeth continue to erupt whether they are being worn down or not.  This results in a decreased inability to pick up and grind feed leading to weight loss and digestive upsets.  Also, because the upper and lower grinding surfaces overlap, the act of grinding wears sharp knife like  edges on the outer edge of the uppper teeth and the inner edge of the lower teeth. This can cause painful cuts on the horses cheeks and tongue.

There is a limit on how much time a horse can be kept sedated and his mouth held open.  The quicker the correction to the grinding surfaces can be done the better it is for the horse and the veterinarian who is working in a difficult stance. 

For these reasons I would like to be able to come up with an easier way to cool the tooth and remove dust from the work area.  Some equine dental equipment manufacturers are just beginning to come up with solutions to these problems.  I find their solutions do take hygiene into consideration.  For example none of them use peristaltic pumps which would help protect the sprayed water from becoming contaminated with bacteria.  Also this newer equipment tends to be bulkier and heavier, with vacuum lines, water spray lines and the shaft driver, all encased in one instrument, adequately cleaning the system becomes impossible.  Also due to my height and build heavier equipment becomes a huge problem if I do more than one horse at a time.

I already have excellent (and expensive) equipment that I believe could be adapted in such a way that it could be disassembled and cleaned and sanitized.  I have struggled for a long time to come up with a solution.  I have no interest in attempting to patent and market equine dental equipment.  If this is your area of expertise you may want to look into the feasibility of developing and marketing an equine dental floating (grinding) system.

Because I am not knowledgeable about tools and new technologies I hoped that someone else would be able to suggest components that would lend themselves to this application.

use a wet/dry vac ,  put th' tool shaft inside of th' rigid vac pickup tube along with th' water delivery tube so th' business end of th' tool just protrudes out of th' vac pickup !

It should remove both th' dust and th' water as you grind !

I came up with this while working a job with similar requirements while on duty in th' us navy !


Thanks for such a simple practical solution. 

Did you cut a hole in the vacuum tubing, put the tool in up to the handle and then seal around it in some way?