The Abrasive Blasting Resource Thread

[dkmc]

So I have a thought on Dust Collection.
If I should post this in a separate thread, I will, just let me know.

I've never seen a dual cyclone dust collection system and I'm wondering why not.
Most more elaborate commercial systems, Siphon or Pressure have a "Reclaimer" and then the fines go into a dust collector with some sort of filter bag, pleated paper, etc. The fine dust clogs up the filter so quickly, there are features in place to clean the filters mechanically, or with a blast of air.

The woodworking crowd uses a cyclone to separate out all the chips, dust, and fines, and then sends the mostly clean air to the filter element, which keeps it clean-er and lot longer.

I'm wondering why the commercial systems don't use a second cyclone after the reclaimer to catch mostly all the fines, and then send the mostly clean air to the filters.
The filters would stay much cleaner, and time would be saved without having to clean them so much. Any blast cabinet that gets used a fair amount, would benefit from reduced labor and downtime and from less frequent stops for cleaning the filters, and the filters would last longer, so cost savings there. Filter bags, or the large cylindrical pleated filters are costily to replace when they wear out. Every time they are upset with cleaning methods, (mechanically shaken, or air blast) they wear out a bit. Seems like the second cyclone separator would pay for itself in not a very long time.
Any thoughts on this, please lets hear them.

 

[930dreamer]

I hauled the large blast cabinet to the new shop today, not fun.

 

[OccupantRJ]

So I have a thought on Dust Collection.
If I should post this in a separate thread, I will, just let me know.

I've never seen a dual cyclone dust collection system and I'm wondering why not.
Most more elaborate commercial systems, Siphon or Pressure have a "Reclaimer" and then the fines go into a dust collector with some sort of filter bag, pleated paper, etc. The fine dust clogs up the filter so quickly, there are features in place to clean the filters mechanically, or with a blast of air.

The woodworking crowd uses a cyclone to separate out all the chips, dust, and fines, and then sends the mostly clean air to the filter element, which keeps it clean-er and lot longer.

I'm wondering why the commercial systems don't use a second cyclone after the reclaimer to catch mostly all the fines, and then send the mostly clean air to the filters.
The filters would stay much cleaner, and time would be saved without having to clean them so much. Any blast cabinet that gets used a fair amount, would benefit from reduced labor and downtime and from less frequent stops for cleaning the filters, and the filters would last longer, so cost savings there. Filter bags, or the large cylindrical pleated filters are costily to replace when they wear out. Every time they are upset with cleaning methods, (mechanically shaken, or air blast) they wear out a bit. Seems like the second cyclone separator would pay for itself in not a very long time.
Any thoughts on this, please lets hear them.

Good points, but on the empire type system that I copied for my cyclone separator, the fines get ejected into an upright filter bag with a 5 gallon bucket at the lower end. They go a decent amount of time with little attention. Other than tapping on mine occasionally i remove and beat it a bit like cleaning a rug, then turn it inside out and blow it off with a long air nozzle. Mine is made of duck fabric.

The Empire brand factory bag on the unit where I worked got cleaned about every several years and it lasted about 30 years before being changed out. That unit was used several sessions daily.

 

[dkmc]

Interesting info RJ. Sounds like I need to adopt a version of that Empire design as well. Is there a build thread for the separator you built? I'd like to study the design.

 

[OccupantRJ]

Dkmc, look at the first 8 or so posts in this thread for pictures. There was no actual build thread as it was so long ago. I am also including a link to a google search of cyclone separators. My bag pictured here has elastic bands sewn into the lower edge to grip the top of a 5 gallon bucket.

https://www.google.com/search?q=cyc....0....0...1ac.1.34.img..1.21.3515.O6fdITceO5A

 

[dkmc]

Thank You RJ!

 

[OccupantRJ]

A thread on protective films on blast cabinets.
https://www.garagejournal.com/forum/showthread.php?t=62759

 

[930dreamer]

600 cfm for $2000??? I'm sure 30 gallons of compressor lube oil isn't cheap.

 

[OccupantRJ]

Now THAT’S a blowhard! That will keep 6 guys going at once if you can afford the fuel and maintenance.

 

[930dreamer]

I might need to go look at this.

 

[dkmc]

Fuel tank capacity: 90 gallons.
Yikes!
That's near identical to the one I had with water damage in 2 cylinders.
It sat and lingered in the lost projects file. Then we went to plan B and scrapped it out. Hey, it 'seemed' like a good idea at the time.

 

[930dreamer]

i moved the RPC and compressor to the new shop Sunday, wonder if I'll ever get them wired up again?

 

[Strouty]

i moved the RPC and compressor to the new shop Sunday, wonder if I'll ever get them wired up again?

I bet it will be done in a few years.

 

[930dreamer]

Clemco model 2020, $2500

https://amarillo.craigslist.org/tls/d/amarillo-clemco-2020-sandblaster/6978613926.html

 

[lis2323]

I came to my senses and decided to list the Quincy rotary screw I had planned to use. An out of town buyer picked it up yesterday.

I was hoping he had a flat bed so that I could load from the side but that didn’t happen.



Thank god for long forks. [emoji1]. Terrific buyer and another smiling face [emoji106]


Sent from my iPad using Tapatalk

 

[dkmc]

That thing is a monster. They can be a ***** with short forks, lucky you with long ones!

 

[lis2323]

Extended forks ROCK.



I could have used the forks on the telehandler to reach past the lowered tailgate without the vertical mast restriction but I was too lazy to walk to the other end of the farm for a two minute job.


Sent from my iPad using Tapatalk

 

[OccupantRJ]

That Moffett is the ticket for loads out in the yard.

 

[dkmc]

Yea, where'd ya get that Moffett? Hard to find a deal on those. I could enlarge my storage and hoarding capabilities 5x with one of those.

 

[lis2323]

That one is our spare that I keep around the maintenance yard.

They are sooo handy.







We also run a Kesmac. They’re pretty cheap now (Kesmac) and I wouldn’t hesitate considering a used one)

Moffett is the most popular and kind of the industry standard.

My conventional shop forklift has wide front tires and runs on packed gravel lots okay.



This pic was of a set of new tires but you can see part of the Kesmac on the rear of the deck. Kind of....




Sent from my iPad using Tapatalk

 

[930dreamer]

I'm going to look at this in the morning, condition unknown $200.

 

[dkmc]

Your electric rates must be very low where you are.
I couldn't afford to run that much, that's why I have a diesel.

 

[930dreamer]

I should really just look for a diesel compressor, I can take it to a place I worked at to test and re-sell?

 

[dkmc]

I've purchased, checked out, cleaned up, and flipped several larger compressors for profit myself. Nothing wrong with that.

 

[930dreamer]

I went and took a quick look at this Quincy today, 9034 hours. Will look again after rain stops.

 

[Strouty]

I would think that those compressors would see 100k hours, so it could be 109k. I bought one that had 55k and it was considered lower hours.

 

[930dreamer]

Good catch with a five digit hour meter hard to say?

 

[Strouty]

How old is the compressor?

 

[930dreamer]

I'm not sure?

 

[OccupantRJ]

Questions on dust collection from blast cabinet.

https://www.garagejournal.com/forum/showthread.php?t=433274

 

[930dreamer]

Kellogg American 462 in PA;

 

[dkmc]

That's massive.
I went to an engine show last weekend, and was happy to see a line up of oldie compressors.

 

[930dreamer]

Those old compressors are so cool.

 

[OccupantRJ]

Kellogg American 462 in PA;

That is really the logical unit for a home shop guy. Parts for the large portables are rather expensive.

 

[930dreamer]

I'm a bit short power wise to get this up and running, FB for sale 50hp. Couple it to a diesel engine?

 

[dkmc]

A former customer had one of those in their plant. Theirs was a 25hp version. Quiet and steady.

 

[OccupantRJ]

A thread on blast cabinet systems.

https://www.garagejournal.com/forum/showthread.php?t=75708

 

[930dreamer]

A former customer had one of those in their plant. Theirs was a 25hp version. Quiet and steady.

I'm looking at a 60KW gen set that might power the 50 hp compressor?

 

[930dreamer]

I like these also;

 

[dkmc]

Nice twin Quincy setup!