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Sandblasting ????

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75Plus:
A shop I worked in years ago had a similar setup but had several of the spherical containers each with a different type/size media. This allowed the blast cabinet to be quickly changed over.

Joe

ksor:
Thx for your ideas  :coffee:

I'm really sure the spherical container is NOT an independent and separate sand blaster - it's a container for the sand - the holes in the base ... I think they are just 'decoration'  :scratch: and don't think they were storage place for something ...  :scratch: no. I don't think so.

BUT I thought the connection at the 'equator' MAYBE had to do with CLEANING the sand - EVEN THOUGH there already IS a pipe in the upper box for a vacuum cleaner !

MAYBE the pipe for connection to a vacuum cleaner in the upper box is a relic of an earlier setup - I don't know  :scratch: !

OR

In fact there is a need for TWO vacuum cleaners - ONE to take the dust in the box to the sake of visibility in the box and ONE MORE connected to the spherical container at the 'equator' for CLEANING the sand  :loco:

awemawson:
Ksor,

The sphere CERTAINLY started out life as an independent low volume sand blaster in the car trade. It may well have been re-deployed later as a sand collector. I had one, I used it, it IS the same.

The 'equator' fat tube went to a vacuum cleaner, the 'north pole' fat tube went to the blasting head sucking used sand back into the sphere. The compressed air line went to a venturi arrangement dipped in the sand and then on to the nozzle. The top of the sphere could be removed by undoing a couple of knurl headed screws. The base has holes to store the collecting heads which were moulded in yellow rubber, and had 'fingers' extending to form a skirt round the blast area.

It was pretty pathetic though as a blaster - ok for tiny rust spots which was its intended purpose but hopeless for larger areas.
Andrew

ksor:

--- Quote from: awemawson on January 19, 2013, 05:04:52 AM ---Ksor,

The sphere CERTAINLY started out life as an independent low volume sand blaster in the car trade. It may well have been re-deployed later as a sand collector. I had one, I used it, it IS the same.

--- End quote ---

I think I misunderstood you in the first place - I now have made some investigation on the ball and made a drawing with explanation for the indevidual komponents:

http://kelds.weebly.com/sandblaeligser.html

And I think it looks more like af sand CLEANER than a sand BLASTER - I think you HAVE TO HAVE a separate box for the gun and object.

DMIOM:

--- Quote from: ksor on January 19, 2013, 07:08:14 AM ---.........And I think it looks more like af sand CLEANER than a sand BLASTER - I think you HAVE TO HAVE a separate box for the gun and object.
--- End quote ---

Sorry, I don't know about this sphere BUT you do not have to have a separate box for gun & object.

I have several blasting outfits such as these

In all of these the blasting media (sand/grit, or in my case, various grades of glass beads) collects in a hopper at the base of the cabinet.  There is no external chamber or separator.  The only external connections are an incoming dry air line for the gun, and an exhaust to prevent pressure build up in the cabinet, to which it is prudent to collect a dust extractor of some type.  The gun has an internal venturi fed by a suction line which draws blasting media up from the hopper or well in the bottom of the cabinet.

Dave

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